CN103945258B - A kind of channel switching method and radiovisor - Google Patents
A kind of channel switching method and radiovisor Download PDFInfo
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- CN103945258B CN103945258B CN201410128035.3A CN201410128035A CN103945258B CN 103945258 B CN103945258 B CN 103945258B CN 201410128035 A CN201410128035 A CN 201410128035A CN 103945258 B CN103945258 B CN 103945258B
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Abstract
The invention provides a kind of channel switching method, a radiovisor is applied to, including the prompt message of the audio-video frequency content of each channel is obtained from EPG, it is further comprising the steps of the step of the prompt message that prestores：Receive channel switching instruction；The channel switching instruction is parsed, target channel coding is obtained；The audio frequency and video of target channel are buffered, is encoded according to the target channel, transferred the prompt message of the audio-video frequency content of target channel and show the prompt message；After the completion of the audio frequency and video buffering of the target channel, stop showing the prompt message, play the audio frequency and video of the target channel.The solution of the present invention can be before the audio frequency and video of target channel buffering be completed, the prompt message of the audio-video frequency content of display target channel.Whether the content of the audio frequency and video for allowing users to quickly to judge target channel by the prompt message meets the demand of oneself, and then is further selected.
Description
Technical field
The present invention relates to display technology field, the method and radiovisor of more particularly to a kind of channel switch.
Background technology
With the increase of TV programme operator, and DTV with and the emerging TV transmission such as internet television
The popularization of mode, the channel quantity of user's TV programme to be received is significantly increased, and brings more may be selected
Property.Simultaneously user the fastidious property of TV programme is gradually increased, often between different channels switch, so as in time selection and
Watch the TV programme oneself liked.
In channel switch procedure, it is necessary to first to the sound of target channel before the audio frequency and video normal play of target channel
Video enters row buffering.In the buffering course of the audio frequency and video of target channel, it is necessary to complete decoder in the transport stream original channel and
The synchronization process of the data exchange between target channel, the decoding of the data of target channel, and target channel Voice ＆ Video,
It is required to longer time.The content that the buffering course of so target channel results in target channel is displayed in temporal prolonging
Late, it is impossible to timely show the content of target channel on the display screen to user.And in channel switch procedure, due to
The data of original channel and target channel are possible to disturb, and show mess code image on a display screen.Existing channel
In changing method, in target channel buffer stage, blank screen or blue screen are shown in front end interface to avoid mess code image pair
The pessimal stimulation of user's vision.
But, blank screen or blue screen still cannot be presented the information of the video content on target channel to spectators in time,
User is difficult to judge whether the video content of target channel meets the demand of oneself, it is necessary to wait longer time, treats normally to broadcast
Put after the audio frequency and video of target channel, can just be judged, so, during switching channels selection viewing channel, every time
Channel switch is required for waiting longer time in the audio frequency and video buffering course of target channel, causes the selection course meeting of channel
Expend more time.
The content of the invention
The embodiment of the present application solves prior art channel by providing a kind of channel switching method and radiovisor
Blank screen or blue screen cannot in time be presented to the defect of the information of the video content of ownership goal channel in handoff procedure, realize
In channel switch procedure, the prompt message of the video content of quick display target channel.
The invention provides a kind of channel switching method, a radiovisor is applied to, including each frequency is obtained from EPG
It is the step of prompt message of the audio-video frequency content in road, prompt message that prestores, further comprising the steps of：Channel switch is received to refer to
Order；The channel switching instruction is parsed, target channel coding is obtained；The audio frequency and video of target channel are buffered, is compiled according to the target channel
Code, transfers the prompt message of the audio-video frequency content of target channel and shows the prompt message；The audio frequency and video buffering of the target channel
After the completion of, stop showing the prompt message, play the audio frequency and video of the target channel.
Preferably, the step of prompt message of the audio-video frequency content of each channel, the prompt message that prestores are obtained according to EPG
Specially：The prompt message of the audio-video frequency content of each channel each time is obtained according to EPG, prestore the prompt message.Buffering mesh
The audio frequency and video of channel are marked, is encoded according to the target channel, the step of transferring the prompt message and show the prompt message
Specially：The audio frequency and video of target channel are buffered, according to target channel coding and current time, the prompting of target channel is transferred
Information simultaneously controls to show the prompt message.
Particularly, the EPG is obtained by internet.
Particularly, the EPG is obtained by digital television signal.
Preferably, the step of prompt message of the audio-video frequency content that each channel is obtained from EPG, is specially：Obtained from internet
An EPG is taken, the 2nd EPG is obtained from digital television signal source；Relevant information to each channel in an EPG and the 2nd EPG is entered
Row contrast；When the programm name in an EPG with the same channel same time in the 2nd EPG is identical, obtained according to an EPG
In the prompt message of the audio-video frequency content of the time, prestore the channel prompt message；When in an EPG with second
When the programm name of same channel same time is differed in EPG, sound of the channel in the time is obtained according to the 2nd EPG
The prompt message of video content, prestore the prompt message.
Preferably, the prompt message is picture.
Invention also provides a kind of radiovisor, including：
Prompt message recording unit, the prompt message of the audio-video frequency content for obtaining each channel according to EPG, prestore the prompting
Information；
Instruction acquiring unit, for receiving channel switching instruction；
Processing unit, according to channel switching instruction, obtains target channel coding；
Display control unit, the audio frequency and video for buffering target channel are encoded according to the target channel, transfer target channel
Audio-video frequency content prompt message and control show the prompt message；After the completion of the audio frequency and video buffering of the target channel, control
Stop showing the prompt message, the audio frequency and video of the target channel are played in control.
Preferably, prompt message recording unit, for carrying for the audio-video frequency content according to EPG acquisition each channel each times
Show information, prestore the prompt message.The display control unit, the audio frequency and video for buffering target channel, according to the target channel
Coding and current time, transfer the prompt message of the audio-video frequency content of target channel and control to show the prompt message；The target
After the completion of the audio frequency and video buffering of channel, control stops showing the prompt message that the audio frequency and video of the target channel are played in control.
Preferably, the EPG is obtained by internet.
Preferably, the EPG is obtained by digital television signal.
Preferably, the prompt message recording unit, is used for：An EPG is obtained from internet, from digital television signal source
Obtain the 2nd EPG；Obtain the programm name of each channel each time in an EPG and each channel each time in the 2nd EPG of acquisition
Programm name simultaneously compares；When the programm name in an EPG with the same channel same time in the 2nd EPG is identical, according to
One EPG obtains the prompt message of audio-video frequency content of the channel in the time, and prestore the prompt message；As an EPG
In when being differed with the programm name of same channel same time in the 2nd EPG, the channel is obtained described according to the 2nd EPG
The prompt message of the audio-video frequency content of time, prestore the prompt message.The programm name refers to the symbol of pickup program, bag
Include program name Completion, program abbreviation, program code etc..
Preferably, the prompt message is picture.
Theing improvement is that for the program of the present invention, target channel was buffered before the audio frequency and video of the target channel are played
During audio frequency and video, the prompt message of the audio-video frequency content of target channel is transferred, show the prompt message；In the audio frequency and video of target channel
Buffering course in, it is necessary to complete data exchange of the decoder in the transport stream between original channel and target channel, target channel
Data decoding, and target channel Voice ＆ Video synchronization process, be required to longer time；And the prompt message is
It is pre-stored in radiovisor, the acquisition time of the prompt message is short, and relative data amount is less, processes the time of display
To be much smaller than target channel buffer time.And then can in advance show the prompt message before completion is buffered.
The invention allows for a kind of channel switching method, a radiovisor is applied to, comprised the following steps：Receive
Channel switching instruction；The channel switching instruction is parsed, target channel coding is obtained；The audio frequency and video of target channel are buffered, according to this
Target channel is encoded, and a two field picture of the target channel is captured in real time as prompt message, and show the prompt message；The target
After the completion of the audio frequency and video buffering of channel, stop showing the prompt message, play the audio frequency and video of the target channel.
Meanwhile, present invention also offers a kind of radiovisor, including：Instruction acquiring unit, cuts for receiving channel
Change instruction；Processing unit, according to channel switching instruction, obtains target channel coding；Display control unit, for buffering target frequently
The audio frequency and video in road, encode according to the target channel, a two field picture of the target channel are captured in real time as prompt message, and control
Show the prompt message；After the completion of the audio frequency and video buffering of the target channel, control stops showing the prompt message, plays the target
The audio frequency and video of channel.
Another program of the present invention thes improvement is that, buffers during the audio frequency and video of target channel, it is necessary to complete successively
Into decoder data exchange in the transport stream between original channel and target channel, the decoding of the data of target channel, and mesh
The synchronization process of mark channel audio and video.Need to enter image and voice data in the decoding process of the data of target channel
Row decoding, after being decoded to the view data of target channel, can be in the synchronization process of the Voice ＆ Video of target channel
Before, that is, decoded frame image data is obtained, is shown the image as the prompt message of target channel.And then can be with
Before the synchronization process of the Voice ＆ Video of target channel, the prompt message of display target channel in advance.
To sum up it is somebody's turn to do, the solution of the present invention can be before the audio frequency and video of target channel buffering be completed, the sound of display target channel
The prompt message of video content.Whether the content of the audio frequency and video for allowing users to quickly to judge target channel by the prompt message
Meet the demand of oneself, and then further selected.
Brief description of the drawings
The flow chart of the intermediate frequency channel switching method of Fig. 1 the embodiment of the present application one；
The intermediate frequency channel switching method flow of Fig. 2 the embodiment of the present application two；
The flow chart of the intermediate frequency channel switching method of Fig. 3 the embodiment of the present application three.
Specific embodiment
Channel switching method of the invention, in the buffer stage of target channel, transfers related to target channel carrying immediately
Show information, and show on a display screen.By showing the programme content of ownership goal channel in advance, allow users to quickly sentence
It is disconnected whether to meet the demand of oneself, and then further selected, shorten the judgement stand-by period of user.
Channel switching method in the present embodiment may apply in the radiovisors such as television set, Set Top Box.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
Embodiment one：
A kind of channel switching method is present embodiments provided, is applied in a television set.
As shown in figure 1, the method is, it is necessary to obtain the prompting letter of the audio-video frequency content of each channel including step A0, from EPG
Breath, prestore the prompt message.
EPG（Electronic Program Guide, electric program menu）It is the introduction on each channel TV program
Property information electronic guide.The reproduction time to each TV programme in each channel, each channel and each channel TV would generally be included
The related introduction of program.
Specifically, EPG can be obtained by internet.Had in internet and be discussed in detail for each channel.Pass through
In the EPG of Network Capture, corresponding and each channel, including a URL address for the introductory information of its content.Television reception is filled
After putting connection network, network EPG information can be obtained, and the URL of the related introduction information of each channel is parsed from the EPG
Address.And from the URL addresses, by Network Capture to these introductory information, including picture or text etc..And store it in
As the prompt message of the channel in television set.
The EPG information obtained by internet, due to containing the URL addresses of the introductory information for explaining each channel, root
The introductory information of each channel is further obtained according to the URL addresses, is prestored in a television set.Due to introductory on internet
Information so in this way, can obtain the introductory information of each channel compared with horn of plenty as each channel compared with horn of plenty
Prompt message, the later stage and then the introduction on target channel of more horn of plenty can be provided.
Specifically, EPG can be obtained by by digital television signal.Existing digital television signal supplier is providing
While the audio, video data of each channel, EPG can be also provided, the introductory information on each channel can be included in the EPG.TV
Machine can obtain EPG therein after digital television signal is received, and then parse the EPG, obtain wherein on Jie of each channel
Continuing property information, introductory information can be picture or text etc..Using the introductory information Store in a television set as the channel
Prompt message.
For obtaining EPG by digital television signal, and then obtain the mode of the prompt message of each channel, due to EPG and
The audio-video frequency content of each channel is obtained in same digital television signal suppliers, i.e., the introductory information of each channel is offer
The provider of the audio-video frequency content of the channel provides, it is ensured that the accuracy and authority of the introductory information, you can to protect
Demonstrate,prove the accuracy of the corresponding relation of the introductory information and channel.And then ensure that the later stage is supplied to the prompting of each channel of user to believe
The accuracy and authority of breath.
The EPG information is parsed, the channel coding of each channel can be obtained, then filled in television reception according to introductory information
The storage address put, sets up a prompt message database in a television set, and the prompt message database includes above-mentioned each channel
With the incidence relation of storage address of its prompt message in radiovisor.For example：
| Channel coding | Prompt message storage address |
| CCTV1 | C/js/ CCTV 1 |
| CCTV2 | C/js/ CCTV 2 |
| CCTV3 | C/js/ CCTV 3 |
| CCTV4 | C/js/ CCTV 4 |
The storage address of corresponding prompt message is obtained according to the prompt message database so as to the later stage, and then obtains this and carried
Show information, and show.
Specifically, it is necessary to perform following steps in channel switch procedure each time：
Step A1, receives channel switching instruction；
Step A2, the channel switching instruction is parsed, obtain target channel coding；
The audio frequency and video of step A3, buffering target channel, encode according to the target channel, transfer in the audio frequency and video of target channel
The prompt message of appearance simultaneously controls to show the prompt message；
After the completion of step A4, the audio frequency and video buffering of the target channel, control stops showing the prompt message that control is played should
The audio frequency and video of target channel.
The detailed process of specific each step is as follows：
Step A1, receives channel switching instruction；
User can send channel switching instruction to television set by remote control, it is also possible to by the touch-screen of display device
Or button carries out directly transmitting instruction, or channel switching instruction is sent by voice, gesture etc..Prior art can be utilized
In any technological means send channel switching instruction.Channel number containing target channel in the channel switching instruction.
Television set can receive the channel switching instruction by corresponding mode.Use is for example received by touch-screen, button
The touch-control at family is obtained, and the voice or gesture of user is received by voice monitoring device or gesture supervising device etc., and then obtain
Channel switching instruction.Channel number containing target channel in the channel switching instruction.
For example, we are by the program of the 1st channel of desired viewing, the channel switching instruction at least includes channel number " 1 ".
Step A2, the channel switching instruction is parsed, obtain target channel coding.
After television set receives channel switching instruction, the channel switching instruction is parsed, receive channel switching instruction
In target channel channel number, obtain the channel coding corresponding to channel number, the channel coding can be channel name, such as the
1 channel corresponds to CCTV1 channels, then can be according to channel number " 1 " determination " CCTV1 channels ".In radiovisor, channel
Coding is probably code, such as " CCTV1 ".
The audio frequency and video of step A3, buffering target channel, encode according to the target channel, transfer in the audio frequency and video of target channel
The prompt message of appearance simultaneously controls to show the prompt message.
After obtaining target channel coding, i.e., target channel is determined according to channel coding, the sound for starting to buffer target channel is regarded
Frequently.
Encoded according to the target channel simultaneously, the storage of corresponding prompt message is obtained according to the prompt message database
Location, and then obtain the prompt message.This is not simultaneously to emphasize both for a time triggered, and is that both can simultaneously advance
OK.
For example, the prompt message of each channel is associated with channel coding, according to the channel coding of CCTV1, you can
The storage address of the prompt message of CCTV1 is extracted in prompt message database, and then obtains the prompting of the audio-video frequency content of CCTV1
Information.
After getting the prompt message of target channel, i.e. control shows the prompt message.
After the completion of step A4, the audio frequency and video buffering of the target channel, control stops showing the prompt message that control is played should
The audio frequency and video of target channel.
After the completion of target channel buffering, the buffer module of television set feeds back control unit of the completion status to television set,
Control unit is that control display stops showing the prompt message at once, and controls to commence play out the audio frequency and video of the target channel.
So, the audio frequency and video buffering course of target channel is once completion, you can terminate the display of prompt message, plays the sound of target channel
Video.So that user's normal tv content for watching target channel as early as possible.
Certainly, after the completion of the audio frequency and video buffering of the target channel, stop showing the prompt message, play the target channel
Audio frequency and video can also be implemented as described below：
The prompt message plays the scheduled time, after the scheduled time, stops showing the prompt message, plays the target channel
Audio frequency and video.The scheduled time more than or equal to target channel buffering used by the time.For example, the buffer time of target channel is general
Can be completed within 2s, then the display time that can set prompt message is 2s, after prompt message display 2s, terminate prompting
Presentation of information, and immediately buffered completion broadcasting " CCTV1 " audio frequency and video.
Preferably, the prompt message is picture.
In target channel buffering course, a secondary picture can be timely inserted, ownership goal is intuitively showed in advance
The programme content of channel, makes user have an intuitively visual experience, so as to quickly can quickly judge whether to meet oneself
Demand, and then further selected.Simultaneously as the brightness relative difference of picture and video is smaller, will not produce light
Spend the stimulation of difference, it is to avoid cause the unnecessary vision to injure to user.
Preferably, picture is full screen display.When the pixel value of the picture is different from the pixel value of display screen, should in display
During picture, the picture is stretched or shrink process, the resolution ratio of the picture for making is identical with the pixel value of display screen, entirely
Screen shows the picture.So, full-screen picture shows that the display that picture on the one hand can be avoided excessive and produced is imperfect, and then
Avoid being supplied to the prompt message of user imperfect.On the other hand, when picture can be avoided too small, picture only occupies a part
Display space, it is impossible to make full use of the problem of display space, to provide the user with full direct feel of trying one's best greatly as far as possible.
Above-mentioned channel switching method, in cannot only be applied to television set, it is also possible to be applied to Set Top Box, intelligent box
Deng in radiovisor.
Meanwhile, present embodiments provide invention also provides a kind of radiovisor, including：
Prompt message recording unit, the prompt message of the audio-video frequency content for obtaining each channel according to EPG, prestore the prompting
Information；
Instruction acquiring unit, for receiving channel switching instruction；
Processing unit, according to channel switching instruction, obtains target channel coding；
Display control unit, the audio frequency and video for buffering target channel are encoded according to the target channel, transfer target channel
Audio-video frequency content prompt message and control show the prompt message；After the completion of the audio frequency and video buffering of the target channel, control
Stop showing the prompt message, the audio frequency and video of the target channel are played in control.
Preferably, display control unit includes buffer cell and control unit, and control unit is used for according to the target channel
Coding, transfers the prompt message of the audio-video frequency content of target channel and controls to show the prompt message；Buffer cell, for buffering
The audio frequency and video of target channel, completion status is fed back to control unit, control unit after the completion of the audio frequency and video buffering of the target channel
Control to stop showing the prompt message after receiving the completion status of control unit feedback, the sound that the target channel is played in control is regarded
Frequently.
Preferably, display control unit includes buffer cell and control unit, and control unit is used for according to the target channel
Coding, transfers the prompt message of the audio-video frequency content of target channel and controls to show the prompt message；Buffer cell, for buffering
The audio frequency and video of target channel；Control unit controls the prompt message to control to stop showing the prompt message after playing the scheduled time,
The audio frequency and video of the target channel are played in control.The scheduled time more than or equal to target channel channel buffering used by the time.
Preferably, the EPG is obtained by internet.
Preferably, the EPG is obtained by digital television signal.
Preferably, the prompt message is picture.
Above-mentioned radiovisor, can be television set, Set Top Box, intelligent box etc., be not limited thereto.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
When buffering target channel audio frequency and video before the audio frequency and video of the target channel are played, the audio frequency and video of target channel are transferred
The prompt message of content, shows the prompt message；Exist, it is necessary to complete decoder in the buffering course of the audio frequency and video of target channel
Data exchange in transport stream between original channel and target channel, the decoding of the data of target channel, and target channel audio
With the synchronization process of video, longer time is required to；And the prompt message is pre-stored in radiovisor, the prompting
The acquisition time of information is short, and relative data amount is less, and the time for processing display will be much smaller than target channel buffer time.In advance
Show the prompt message of the audio-video frequency content of ownership goal channel.Allow users to quickly judge whether target channel meets certainly
Oneself demand, and then further selected.
Embodiment two
A kind of channel switching method is present embodiments provided, is applied in a television set.
As Fig. 2 is somebody's turn to do, the method is, it is necessary to obtain carrying for the audio-video frequency content of each channel each time including step B0, according to EPG
Show information, prestore the prompt message.
Specifically, EPG can be obtained by internet.The detailed of each program for each channel is had in internet
Introduce.By in the EPG of Network Capture, corresponding to the program with each channel, including an introductory information URL for the programme content
Address.After television set connection network, network EPG information can be obtained, and Jie of the program on each channel is parsed from EPG
The URL addresses of continuing property information and each program corresponding time.Accordingly, can using the introductory information of the program as this frequently
Road to should program time introductory information.And according to the URL addresses, by Network Capture to these introductory letters
Breath, including picture or text etc..And store it in the corresponding time of program in radiovisor as the channel and carry
Show information.
The EPG information obtained by internet, due to containing the introductory information of the different programs of explaining each channel
URL addresses, the introductory information of each channel is further obtained according to the URL addresses, is prestored in a television set.Due to internet
On introductory information compared with horn of plenty, so in this way, the different programs of each channel compared with horn of plenty can be obtained
Introductory information as the program corresponding time prompt message, the later stage so can provide more horn of plenty on target channel
The introduction of actual program.
Specifically, EPG can be obtained by by digital television signal.Existing digital television signal supplier is providing
While the audio, video data of each channel, EPG can be also provided, the introductory letter of the program on each channel can be included in the EPG
The reproduction time of the program of breath and each channel.Television set can obtain EPG therein after digital television signal is received, and enter
And the EPG is parsed, obtain the introductory information of the wherein each program on each channel, and using the introductory information as the channel
Program the corresponding time prompt message.Introductory information can be picture or text etc..The introductory information Store is existed
In radiovisor as the channel each time prompt message.
For obtaining EPG by digital television signal, and then the mode of the prompt message of each time of each channel is obtained, by
Obtained in same digital television signal suppliers in the audio-video frequency content of EPG and each channel, i.e., each program of each channel
Introductory information be provide the channel audio-video frequency content provider provide, it is ensured that the accuracy of the introductory information and
It is authoritative, you can to ensure the introductory information with channel and the accuracy of the corresponding relation of time.And then ensure your later stage
It is supplied to the accuracy and authority of the prompt message of each time of each channel of user.
Preferably, while obtaining EPG information by internet and digital television signal source.Internet obtains an EPG, leads to
Cross digital television signal source and obtain the 2nd EPG.Parse an EPG and the 2nd EPG respectively, obtain each channel in an EPG it is each when
Between programm name and obtain the 2nd EPG in each channel each time programm name and compare；When in an EPG with the 2nd EPG
When the programm name of middle same channel same time is identical, audio frequency and video of the channel in the time are obtained according to an EPG
The prompt message of content, prestore the prompt message；When the program in an EPG with the same channel same time in the 2nd EPG
When title is differed, the prompt message of audio-video frequency content of the channel in the time is obtained according to the 2nd EPG, prestored described
Prompt message.
Comparatively, the channel correlation and the introductory information of program that the EPG based on internet is obtained relatively enrich but mutual
Networking EPG updates relatively slow, but the related frequency obtained based on the EPG provided by operator in digital television signal source and based on it
The introductory information of road and program has more and has authoritative weight and more simple.,
When the programm name in an EPG with the same channel same time in the 2nd EPG is identical, obtained according to an EPG
Prompt message of the channel in the audio-video frequency content of the time is taken, prestore the prompt message；When in an EPG with second
When the programm name of same channel same time is differed in EPG, sound of the channel in the time is obtained according to the 2nd EPG
The prompt message of video content, prestore the prompt message.I.e. when not conflicting in an EPG and the 2nd EPG, according to first
EPG obtains related introductory information, it is ensured that prompt message it is rich.Do not rushed when in an EPG and the 2nd EPG at once
When prominent, related introductory information is obtained according to the 2nd EPG, it is ensured that the accuracy of prompt message.
The EPG is parsed, the channel coding of each channel can be obtained.Then according to introductory information in radiovisor
Storage address, a prompt message database is set up in television set, and the prompt message database includes above-mentioned each channel and time
With the incidence relation of its storage address of the corresponding prompt message in radiovisor.For example：
| Channel coding | Time | Programm name | Prompt message storage address |
| CCTV1 | 19:00-19:30 | News hookup | C/js/ CCTV 1/XWLB |
| CCTV1 | 19:30-19:50 | Focus | C/js/ CCTV 1/JDFT |
| CCTV2 | 19:00-19:20 | Economic observation | C/js/ CCTV 2/JJGC |
| CCTV2 | 19:20-19:55 | Shopper's paradise | C/js/ CCTV 2/GWTT |
So that the later stage is according to the corresponding relation of the prompt message database, carrying corresponding to target channel current time is obtained
Show the storage address of information, and then obtain the prompt message, and show.Can include program in certain prompt message database
Name can not also include program names.
Specifically, it is necessary to perform following steps in channel switch procedure each time：
Step B1, receives channel switching instruction；
Step B2, the channel switching instruction is parsed, obtain target channel coding；
The audio frequency and video of step B3, buffering target channel, according to target channel coding and current time, transfer target channel
The prompt message of the audio-video frequency content of current time simultaneously controls to show the prompt message
After the completion of step B4, the audio frequency and video buffering of the target channel, control stops showing the prompt message that control is played should
The audio frequency and video of target channel.
The detailed process of specific each step is as follows：
Step B1, receives channel switching instruction；
User can send channel switching instruction to television set by remote control, it is also possible to by the touch-screen of display device
Or button carries out directly transmitting instruction, or channel switching instruction is sent by voice, gesture etc..Prior art can be utilized
In any technological means send channel switching instruction.Channel number containing target channel in the channel switching instruction.
Television set can receive the channel switching instruction by corresponding mode.Use is for example received by touch-screen, button
The touch-control at family is obtained, and the voice or gesture of user is received by voice monitoring device or gesture supervising device etc., and then obtain
Channel switching instruction.
Channel number containing target channel in the channel switching instruction.
For example, we are by the program of the 1st channel of desired viewing, the channel switching instruction at least includes channel number " 1 ".
Step B2, the channel switching instruction is parsed, obtain target channel coding.
After television set receives channel switching instruction, the channel switching instruction is parsed, receive channel switching instruction
In target channel channel number, obtain the channel coding corresponding to channel number, the channel coding can be channel name, such as the
1 channel corresponds to CCTV1 channels, then can be according to channel number " 1 " determination " CCTV1 channels ".In radiovisor, channel
Coding is probably code, such as " CCTV1 ".
The audio frequency and video of step B3, buffering target channel, according to target channel coding and current time, transfer target channel
The prompt message of the audio-video frequency content of current time simultaneously shows the prompt message.
After obtaining target channel coding, i.e., target channel is determined according to channel coding, the sound for starting to buffer target channel is regarded
Frequently.
Simultaneously according to target channel coding and the current time of switching channels, phase is obtained according to the prompt message database
The storage address of the prompt message answered, and then obtain the prompt message., as the audio-video frequency content of target channel current time
Prompt message；This is not simultaneously to emphasize both for a time triggered, and is that both can be carried out parallel.
For example, the prompt message of each channel is associated with channel coding, according to the channel coding and channel switch of CCTV1
Current time 19:10, you can in the storage address C/js/ of the prompt message that CCTV1 is extracted in prompt message database
CCTV 1/XWLB, and then the prompt message.
After getting the prompt message of target channel, i.e. control shows the prompt message.
After the completion of step B4, the audio frequency and video buffering of the target channel, control stops showing the prompt message that control is played should
The audio frequency and video of target channel.
After the completion of target channel buffering, completion status is fed back, receive feedback completion status control display and stop at once
The prompt message is only shown, and controls to commence play out the audio frequency and video of the target channel.
So, the audio frequency and video buffering course of target channel is once completion, you can terminate the display of prompt message, plays target
The audio frequency and video of channel.So that user's normal tv content for watching target channel as early as possible
Certainly, after the completion of the audio frequency and video buffering of the target channel, control stops showing the prompt message that the mesh is played in control
The audio frequency and video for marking channel can also be implemented as described below：
The prompt message plays the scheduled time, after the scheduled time, stops showing the prompt message, plays the target channel
Audio frequency and video.The scheduled time more than or equal to target channel channel buffering used by the time.For example, the buffer time of target channel
Can typically be completed within 2s, then the display time that can set prompt message is 2s, and the prompt message is shown after carrying out 2s, tied
Beam prompt message shows, and the broadcasting " CCTV1 " of buffered completion immediately audio frequency and video.
Preferably, the prompt message can be picture, in the optimal way and embodiment one of its advantage and effect and picture
Unanimously, repeat no more again.
Above-mentioned channel switching method, in cannot only be applied to television set, it is also possible to be applied to Set Top Box, intelligent box
Deng in radiovisor.
Meanwhile, present embodiments provide invention also provides a kind of radiovisor, including：
Prompt message recording unit, the prompt message of the audio-video frequency content for obtaining each channel each time according to EPG, in advance
Deposit the prompt message；
Instruction acquiring unit, for receiving channel switching instruction；
Processing unit, according to channel switching instruction, obtains target channel coding；
Display control unit, buffers the audio frequency and video of target channel, according to target channel coding and current time, transfers mesh
Mark the prompt message of the audio-video frequency content of the current time of channel and control to show the prompt message；The audio frequency and video of the target channel
After the completion of buffering, control stops showing the prompt message that the audio frequency and video of the target channel are played in control.
Preferably, display control unit includes buffer cell and control unit, and control unit is used for basis and states target channel
Coding and current time, transfer the prompt message of the audio-video frequency content of the current time of target channel and control to show that the prompting is believed
Breath；Buffer cell, the audio frequency and video for buffering target channel feed back completion status after the completion of the audio frequency and video buffering of the target channel
To control unit, control unit controls to stop showing the prompt message, control after receiving the completion status that control unit is fed back
Play the audio frequency and video of the target channel.
Preferably, display control unit includes buffer cell and control unit, and control unit is used for according to the target channel
Coding and current time, transfer the prompt message of the audio-video frequency content of the current time of target channel and control to show that the prompting is believed
Breath；Buffer cell, the audio frequency and video for buffering target channel；Control unit controls the prompt message to be controlled after playing the scheduled time
Stop showing the prompt message, the audio frequency and video of the target channel are played in control.The scheduled time is more than or equal to target channel channel
Buffering used by the time.
Preferably, the EPG is obtained by internet.
Preferably, the EPG is obtained by digital television signal.
Preferably, the prompt message recording unit, is used for：An EPG is obtained from internet, from digital television signal source
Obtain the 2nd EPG；Obtain the programm name of each channel each time in an EPG and each channel each time in the 2nd EPG of acquisition
Programm name simultaneously compares；When the programm name in an EPG with the same channel same time in the 2nd EPG is identical, according to
One EPG obtains the prompt message of audio-video frequency content of the channel in the time, and prestore the prompt message；As an EPG
In when being differed with the programm name of same channel same time in the 2nd EPG, the channel is obtained described according to the 2nd EPG
The prompt message of the audio-video frequency content of time, prestore the prompt message.
Preferably, the prompt message is picture.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
When buffering target channel audio frequency and video before the audio frequency and video of the target channel are played, target channel current time is transferred
Audio-video frequency content prompt message, show the prompt message；, it is necessary to complete in the buffering course of the audio frequency and video of target channel
Decoder data exchange in the transport stream between original channel and target channel, the decoding of the data of target channel, and target
The synchronization process of channel audio and video, is required to longer time；And the prompt message is pre-stored in radiovisor
, the acquisition time of the prompt message is short, and relative data amount is less, and the time for processing display will buffer much smaller than target channel
Time.The prompt message of the audio-video frequency content of the current time of ownership goal channel is showed in advance.Allow users to quickly sentence
Whether the audio-video frequency content of disconnected target channel current time meets the demand of oneself, and then is further selected.Due to pointing out
Information is associated with the current time of channel and channel switch simultaneously, compared with embodiment one, can preferably embody prompting letter
The real-time of breath.
Embodiment three
The present embodiment provides a kind of channel switching method, comprises the following steps
A kind of channel switching method, is applied in a television set, comprises the following steps：
Step C1, reception channel switching instruction；
Step C2, the channel switching instruction is parsed, obtain target channel coding；
The audio frequency and video of step C3, buffering target channel, are encoded according to the target channel, and the one of the target channel is captured in real time
Two field picture controls to show the prompt message as prompt message；
After the completion of step C4, the audio frequency and video buffering of the target channel, control stops showing the prompt message that control is played should
The audio frequency and video of target channel.
Specifically, each step is implemented as described below.
Step C1, reception channel switching instruction.
User can send channel switching instruction to television set by remote control, it is also possible to by the touch-screen of display device
Or button carries out directly transmitting instruction, or channel switching instruction is sent by voice, gesture etc..Prior art can be utilized
In any technological means send channel switching instruction.Channel number containing target channel in the channel switching instruction.
Television set can receive the channel switching instruction by corresponding mode.Use is for example received by touch-screen, button
The touch-control at family is obtained, and the voice or gesture of user is received by voice monitoring device or gesture supervising device etc., and then obtain
Channel switching instruction.Channel number containing target channel in the channel switching instruction.
For example, we are by the program of the 1st channel of desired viewing, the channel switching instruction at least includes channel number " 1 ".
Step C2, the channel switching instruction is parsed, obtain target channel coding.
After television set receives channel switching instruction, the channel switching instruction is parsed, receive channel switching instruction
In target channel channel number, obtain the channel coding corresponding to channel number, the channel coding can be channel name, such as the
1 channel corresponds to CCTV1 channels, then can be according to channel number " 1 " determination " CCTV1 channels ".In radiovisor, channel
Coding is probably code, such as " CCTV1 ".
The audio frequency and video of step C3, buffering target channel, are encoded according to the target channel, and the one of the target channel is captured in real time
Two field picture controls to show the prompt message as prompt message.
After obtaining target channel coding, i.e., target channel is determined according to channel coding, the sound for starting to buffer target channel is regarded
Frequently.
, it is necessary to be sequentially completed decoder original channel and mesh in the transport stream during the audio frequency and video of buffering target channel
The synchronization process of the data exchange between mark channel, the decoding of the data of target channel, and target channel Voice ＆ Video.
Need to decode image and voice data in the decoding process of the data of target channel, the view data to target channel is entered
After row decoding, decoded two field picture can be obtained before the synchronization process of the Voice ＆ Video of target channel
Data, show the image as the prompt message of target channel.And then can be in the synchronization of the Voice ＆ Video of target channel
Before treatment, the prompt message of display target channel in advance.
Preferably, due to needing to decode multiple image data in the decoding process of the data of target channel, when
After first frame image data of target channel completes decoding, that is, obtain the data of the first two field picture of decoding completion, by this
One two field picture shows as the prompt message of target channel.It is to be shown due to obtaining the first two field picture, can shows as soon as possible
Prompt message is shown.
After the completion of step C4, the audio frequency and video buffering of the target channel, control stops showing the prompt message that control is played should
The audio frequency and video of target channel.
After the completion of target channel buffering, buffer cell feeds back control unit of the completion status to television set, control module
That is control display stops showing the prompt message at once, and controls to commence play out the audio frequency and video of the target channel.So, target
After the completion of the audio frequency and video buffering course of channel, you can terminate the display of prompt message, the audio frequency and video of target channel are played.So that
User's normal tv content for watching target channel as early as possible.
Certainly, after the completion of the audio frequency and video buffering of the target channel, stop showing the prompt message, play the target channel
Audio frequency and video can also be implemented as described below：
The prompt message plays the scheduled time, after the scheduled time, stops showing the prompt message, plays the target channel
Audio frequency and video.Data decoding of the scheduled time more than or equal to target channel and the total time of audio video synchronization.For example, target
The data decoding of channel and can typically being completed within 1.5s total time for audio video synchronization, then can set prompt message
The display time be 1.5s, the prompt message show after carrying out 1.5s, terminate prompt message and show, and instant buffered completion
Play the audio frequency and video of " CCTV1 ".
Channel switching method in the present embodiment may apply in the radiovisors such as television set, Set Top Box.
Meanwhile, a kind of radiovisor is present embodiments provided, including：
Instruction acquiring unit, for receiving channel switching instruction；
Processing unit, according to channel switching instruction, obtains target channel coding；
Display control unit, the audio frequency and video for buffering target channel are encoded according to the target channel, and the mesh is captured in real time
A two field picture of channel is marked as prompt message, and controls to show the prompt message；The audio frequency and video buffering of the target channel is completed
Afterwards, control stopping shows the prompt message, plays the audio frequency and video of the target channel.
Preferably, display control unit includes buffer cell and control unit, and control unit is used for according to the target channel
Coding, captures a two field picture of the target channel as prompt message in real time, and controls to show the prompt message；Buffer cell,
Audio frequency and video for buffering target channel, completion status is fed back to control unit after the completion of the audio frequency and video buffering of the target channel,
Control unit receive control unit feedback completion status after control stop show the prompt message, control play the target frequently
The audio frequency and video in road.
Preferably, display control unit includes buffer cell and control unit, and control unit is used for according to the target channel
Coding, captures a two field picture of the target channel as prompt message in real time, and controls to show the prompt message；Buffer cell,
Audio frequency and video for buffering target channel；Control unit controls the prompt message to control to stop showing that this is carried after playing the scheduled time
Show information, the audio frequency and video of the target channel are played in control.The scheduled time is more than or equal to the data decoding of target channel and audio
The total time of audio video synchronization.
As above in the audio frequency and video buffering course of the target channel, generally require to buffer multiple image, and carry out target channel
The synchronization process of Voice ＆ Video, but decoding obtains a two field picture, it is not necessary to the buffering of the two field picture after wait, and audio
With the synchronization process of video, it is necessary to time it is relatively fewer.So that before the audio frequency and video of target channel buffering is completed, display target is frequently
The prompt message of the audio-video frequency content in road.In the audio frequency and video for allowing users to quickly judge target channel by the prompt message
Whether appearance meets the demand of oneself, and then is further selected.
Radiovisor in this implementation, can be television set, Set Top Box, intelligent box etc., be not limited thereto.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the present invention can be used and wherein include the computer of computer usable program code at one or more
Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program of upper implementation is produced
The form of product.
The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this hair to the present invention
Bright spirit and scope.So, if it is of the invention these modification and modification belong to the claims in the present invention and its
Within the scope of equivalent technologies, then the present invention is also intended to comprising these changes and modification.
Claims (6)
1. a kind of channel switching method, is applied to a radiovisor, and an EPG is obtained from internet, from DTV letter
Number source obtains the 2nd EPG；Obtain the programm name of each channel each time in an EPG and obtain each in the 2nd EPG
The programm name of channel each time simultaneously compares, if when in an EPG with the same channel same time in the 2nd EPG
When programm name is identical, the prompt message of audio-video frequency content of the channel in the time is obtained according to an EPG, in advance
The prompt message is deposited, if the programm name in an EPG with the same channel same time in the 2nd EPG is differed
When, the prompt message of audio-video frequency content of the channel in the time is obtained according to the 2nd EPG, prestore the prompting letter
Breath, the channel switching method is further comprising the steps of：
Receive channel switching instruction；
The channel switching instruction is parsed, target channel coding is obtained；
The audio frequency and video of target channel are buffered, is encoded according to the target channel, transferred the prompt message and control display described
Prompt message；
After the completion of the audio frequency and video buffering of the target channel, control stops the display prompt message, and the target is played in control
The audio frequency and video of channel.
2. channel switching method as claimed in claim 1, it is characterised in that the audio frequency and video of buffering target channel, according to described
Target channel is encoded, and is transferred the prompt message and is specially the step of showing the prompt message：
The audio frequency and video of target channel are buffered, according to target channel coding and current time, the prompting letter of target channel is transferred
Cease and control to show the prompt message.
3. channel switching method as claimed in claim 1 or 2, it is characterised in that the prompt message is picture.
4. a kind of radiovisor, including：
Prompt message recording unit, an EPG is obtained from internet, and the 2nd EPG is obtained from digital television signal source, obtains described
The programm name of each channel each time and obtain the programm name of each channel each time in the 2nd EPG and compare in first EPG
Compared with, if when the programm name in an EPG with the same channel same time in the 2nd EPG is identical, according to described
First EPG obtains the prompt message of the audio-video frequency content of the channel in the time, and prestore the prompt message, if described the
When programm name in one EPG with the same channel same time in the 2nd EPG is differed, obtained according to the 2nd EPG
In the prompt message of the audio-video frequency content of the time, prestore the channel prompt message；
Instruction acquiring unit, for receiving channel switching instruction；
Processing unit, according to channel switching instruction, obtains target channel coding；
Display control unit, the audio frequency and video for buffering target channel are encoded according to the target channel, transfer the prompting letter
Cease and control to show the prompt message；After the completion of the audio frequency and video buffering of the target channel, control stops the display prompting
The audio frequency and video of the target channel are played in information, control.
5. radiovisor as claimed in claim 4, it is characterised in that the display control unit, for buffering target
The audio frequency and video of channel, according to target channel coding and current time, transfer the prompt message and control to be carried described in display
Show information；After the completion of the audio frequency and video buffering of the target channel, control stops the display prompt message, and the mesh is played in control
Mark the audio frequency and video of channel.
6. the radiovisor as described in claim 4 or 5, it is characterised in that the prompt message is picture.
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| CN105898518A (en) * | 2015-12-28 | 2016-08-24 | 乐视网信息技术（北京）股份有限公司 | Interface display method and device in video loading process |
| CN105828176A (en) * | 2016-03-21 | 2016-08-03 | 乐视网信息技术（北京）股份有限公司 | Program switching realization method, device and equipment and computer program product |
| CN106303692A (en) * | 2016-08-22 | 2017-01-04 | 乐视控股（北京）有限公司 | Video loading method and device |
| CN108235106B (en) * | 2018-01-31 | 2020-10-30 | 聚好看科技股份有限公司 | Method for controlling video occlusion map on smart television and smart television |
| CN108762906B (en) * | 2018-05-25 | 2023-08-08 | 腾讯科技（深圳）有限公司 | Scene switching method and device, electronic equipment and readable storage medium |
| CN111131871B (en) * | 2019-12-03 | 2021-03-19 | 海信视像科技股份有限公司 | Method and display equipment for displaying EPG (electronic program guide) user interface during program playing |
| CN112954387B (en) * | 2021-01-26 | 2023-04-28 | 广州欢网科技有限责任公司 | Method, system and readable storage medium for updating and optimizing television program list |
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