CA1256945A - Remote control system - Google Patents
Remote control systemInfo
- Publication number
- CA1256945A CA1256945A CA000538494A CA538494A CA1256945A CA 1256945 A CA1256945 A CA 1256945A CA 000538494 A CA000538494 A CA 000538494A CA 538494 A CA538494 A CA 538494A CA 1256945 A CA1256945 A CA 1256945A
- Authority
- CA
- Canada
- Prior art keywords
- signal
- remote control
- television
- processing apparatus
- code
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000004044 response Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
- H04B1/205—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver with control bus for exchanging commands between units
Abstract
ABSTRACT OF THE DISCLOSURE
An electronic appliance, which can facilitate operation of a commander for transmitting a remote control signal for the electronic appliance, includes a receiver for receiving a remote control signal from a commander, a plurality of input terminals for receiving video signals from external signal sources, a signal selection switch for selecting one of the signals received at the input terminals and a broadcast signal and for delivering the selected signal as an output video signal therefrom, a code converter operable in response to the condition of the signal selection switch for converting a signal received at the receiver into a code by which the pertaining signal source can be controlled, and an output terminal for supplying an output of the code converter therefrom to the pertaining signal source via a signal cable.
An electronic appliance, which can facilitate operation of a commander for transmitting a remote control signal for the electronic appliance, includes a receiver for receiving a remote control signal from a commander, a plurality of input terminals for receiving video signals from external signal sources, a signal selection switch for selecting one of the signals received at the input terminals and a broadcast signal and for delivering the selected signal as an output video signal therefrom, a code converter operable in response to the condition of the signal selection switch for converting a signal received at the receiver into a code by which the pertaining signal source can be controlled, and an output terminal for supplying an output of the code converter therefrom to the pertaining signal source via a signal cable.
Description
D87,0630 S~7P115 ~56 ~
REMOTE CONTROL SYSTEM
3ackground of the Invention This invention relates to an electronic appliance to which one of a plurality of appliances is selectively connected and which is subject to remote control. An embodiment of the invention is preferably used, for example, for a television set to which one of a plurality of video appliances is selectively connec-ted at the video input terminals thereof and which is subject to remote control.
Normally, a VTR (video tape recorder) is connected in most cases to an external video input terminal of a conventional television set for domestic use. In the case of a television set which is remotely controlled using a commander, where a VTR is connected to a video input terminal o~ the television set, a remote control signal for controlling the VTR is received at a remote control signal receiver of the television set and then transmitted to the VTR.
However, in recent years, novel appliances have been developed and accordinglv kinds of appliances which can be -connected to a video input terminal of a television set have increased so that, in addition to a VTR, for example, a video camera, an 8 mm video recorder, a video disk player and so on may be connected. Accordingly, television sets having a plurali-ty of video input terminals have also been provided.
Fig. 2 illustrates a system wherein appliances such as a VTR
5, an 8 mm video recorder 6 and a video disk player 7 are connected to a television set 4 which has three video input terminals 1, 2, 3, and those appliances 4, 5, 6, 7 are remo-tely controlled using a commander 8.
g~
~6~5 ~ e e- lng to Fig. 2, the appliances 5, 6, 7 are connectQd to ';-3 v-deo input ~erminals 1, 2, 3 via connec~ing lines or cables 9, IO, ll, respectively. The television set 4 includes 2 re~ote con.rol si~nal receiver 12 ror recei~ing an infared ray remota control signal from the commander 8, and a remots control signal received at the signal receiver 12 is then transferred to a control circuit 13 provided in the television set 4 while the remote control signal is transferred also to control circuits 14, 15, 16 provided in the appliances 5, 6, 7, respectively, over a connecting line or cable 17.
The television set 4 further includes an input control circui-t 18 and an input switching circuit 19 therein. Signals which are delivered from the appliances 5, 6, 7 via the terminals 1, 2, 3, respectively, are coupled to the input switching circuit 19. Which one of the appliances 5, 6, 7 is selected, that is, which one of the terminals 1, 2, 3 is selected, is determined in response to an external operation of a keyboard or the like associated with the input control 18. Thus, in response to such an external operation, the input con-trol circuit 18 controls the input switching circuit 19 -to effect a switching operation to transfer a signal received at one of the terminals l, 2, 3 of the television set 4 to an image receiving circuit (not shown).
The co~mander 8 includes various operating keys 20 and a terminal selection switch 21. The selection switch 21 may be in the form of a slide switch having four discrete positions including a position for selection o~ the -television set 4 in which the television set 4 receives a television broadcast in reponse to a selection by the input switching circuit 19 and three other positions for selection of the three terminals 1, 2, 3. Some o~ the operating keys 20 are in common -for the appliances 4, 5, 6, 7, and when a commonly used operating key 20 is operated, a remote control signal having a code corresponding s to a a ~ ac.~on, tha-c is, a selected position, of the selection switch 21 is t-ansmitt~d therefrom. Such commonly used keys include, for exam~le, a channel selection button of a VTR OI a talevision set and a still or pause button OI a VTR or a vi~eo disk player.
According to the construction described above, in case, for example, the VT~ 5 is to be selected via the input control circuit 18 by an external operation, the selection switch 21 of the commander 8 will be shi*ted to the position for selection of the terminal 1. Then, if an operating key 20 is operated, a remote control signal is transmit-ted -thererom and is received at the receiver 12. The remote con-trol signal is then transferred to the control circuit 13 while it is delivered also to the control circuit 14 for the VTR 5 over the connecting line 17.
Consequently, the VTR 5 is caused to operate in a mode corresponding to the contents of the code of -the remote control signal. Thus, in the case of, or example, a reproduction or play mode, a reproduction or play signal is received via the terminal l over the connecting line 9 while it is further supplied to the image receiving circuit described above via the input swi-tching circuit 19. Consequently, a reproduced picture image of the VTR 5 can be monitored on the screen of the television set 4.
Also the other 8 mm video recorder 6 or the video disk player 7 can be caused to operate in a desired mode by remote control by a shifting operation of the selec-tion switch 21 to a position corresponding to the terminal 2 or 3.
In the conventional system of Fig. 2, it is necessary to operate the selection switch 21 o the commander 8 each -time -the input of the terminal 1, 2 or 3 is to be switched. Accordingly, -time or labor for such operation is required, and in case an operation of the salection switch 21 is forgotten or efiacted in ~s~
e~ror, it is impossible to control the aDpliances regularly. To the contrary, if the selec.ion switch 21 is omittad, it will ba im?ossible to use some of tne operating keys 20 commonly to the apD]ian~es a, 5, 6, 7, and consequently ths number of such operating keys 20 will have to be increased for individual kinds of appliances to be connected to the television set 4.
_nmary _f the Invention It is an object of the present invention to provide an electronic appliance which can facili-tate operation of a commander for transmitting a remote control signal for the electronic appliance.
According to the present invention, there is provided a television signal processing apparatus for remotely controlling a plurality of ex-ternal signal sources via a signal cable, comprising: a remote control signal receiver for receiving an infared ray remote control signal from a remote control commander; a plurality of signal input terminals for receiving thereat video signals from said external signal sources; a signal selection switch for selecting one of the signals received at said signal input terminals and a broadcast signal and for delivering the selected signal as an output video signal therefrom; a code converter operable in response to a condition of said signal selection switch for converting a signal received at said remote control signal receiver in-to a code by which the selected signal source can be controlled; and a remote control signal output terminal for supplying an output of said code converter therefrom -to the pertaining signal source via said signal cable. Accordingly, an operation of the special switch for switching the commander for a particular appliance to which the electronic appliance is to be connected can be omitted.
3D~5 The above and othsr objects, features and advantages of the ?resent nvention will become apparent from the followiny cesc- ption and the appended claims, taken in conjunction with the accompanying drzwing.
8rief Description of the Drawings Fig. 1 is a bloc~ diagram illustrating an embodiment OI an electronic appliance according to the present invention; and Flg. 2 is a block diagram illustrating a conventional electronic appliance.
Detailed Description of the P~eferred Embodiment Referring to Fig. l, an embodiment of an electronic appliance according to the present invention is shown. It is to be noted that, in Fig. l, like parts or components are denoted by like reference numberals to those of Fig. 1 and a detailed description of the same is omitted herein to avoid redundancy.
The embodiment shown in Fig. 1 is in the orm of a television set 4 which additionally includes a code converting circuit 22 and a memory 23. Meanwhile, the selection switch 21 of Fig. 2 of the commander 8 is omitted from a commander 8 of Fig. 1.
Thus~ the commander 8 of Fig. 1 is constituted such that if one of a plurality of operating keys 20 is operated, a remote control signal having a code corresponding to an individual mode may be delivered therefrom. In this instance, even when one of the operating keys 20 which are used in common to con-trol appliances ~, 5, 6, 7 is operated, a remote control signal of a same code is delivered therefrom irrespective of a selected appliance.
The code converting circuit 22 converts a code of a signal received at a receiver 12 of the television se-t ~ in response to a switching signal, _o- cont}olling the terminal connection ~2~ 5 developed f-om en ~-.?ul control circui-t 18, by such an ex.enel opera-tion as described above. Meanwhile, data necessary for such code conve~sion 2S desc-lbed ~bove are stored in ths memor-J 23.
Accor~ing to the constr~lction described above, if, for e~ample, the VTR 5 is selected by an external operation, an input switching circuit 19 selects a terminal 1 in response to a switching signal of the input control circuit 18 while the code converting circuit 22 converts a code of a remote control signal received at the receiver 12 in-to another code by which the VTR 5 can be controlled by control unit l~. Thus, the VTR 5 can be controlled by delivering the control signal after such code conversion to a control circuit 14 of the VTR 5 over a connecting line or bus 17.
With -the construction described above, the selection switch 21 of Fig. 2 can be omitted. Accordingly, the time and labor required for operation of the selection switch 21 can be saved without increasing the number of the operating keys 20 of the commander 8, and accordingly operation of the commander 8 can be simplified compared with the conventional system.
While in the present embodiment the television set ~ includes the three video input terminals 1, 2, 3, the present invention can be applied also to a television set which includes a single video input -terminal to which one of -the appliances 5, 6, 7 is selectively connec-ted. In this instance, a control signal after predetermined code conversion can be delivered to a connected appliance by controlling the code converting circuit 22 by -the input control circuit 18.
Meanwhile, it is also possible to display which one of the appliances is being used at presen-t on the screen of the television set ~ in response to a switching signal developed from the input con-trol circuit 18.
~25~
I~ is to be no.ad tha~ -~hlle in the emobidment described herein2bove an electornic _pplienc2 o- the present invention is in the orm of 2 television set which is designed to selectiv-ly -eceive 2 television broadcast or 2 signal received at any o`~
signal input terminals thereof, it may alternatively take ano.her form such as, for example, a signal distributing adapter whic~ is provided separately from a -television set. In this instance, the signal distributing adap-ter may include therein a tuner circuit for receiving a television broadcast.
As apparent from the foregoing description, according to the presen-t invention, a selection switch such as the selection switch 21 of Fig. 2 which is conventionally provided on a commander can be omitted without increasing the number of operating keys on the commander. Accordingly, operatlon of the commander can be simplified, and erroneous operation of the selection switch can be eliminated.
Having now fully described the invention~ it will be apparent to one of ordinary skill in the art that many changes and modifications can be made there-to without departing from the spirit and scope of the invention as set forth herein.
REMOTE CONTROL SYSTEM
3ackground of the Invention This invention relates to an electronic appliance to which one of a plurality of appliances is selectively connected and which is subject to remote control. An embodiment of the invention is preferably used, for example, for a television set to which one of a plurality of video appliances is selectively connec-ted at the video input terminals thereof and which is subject to remote control.
Normally, a VTR (video tape recorder) is connected in most cases to an external video input terminal of a conventional television set for domestic use. In the case of a television set which is remotely controlled using a commander, where a VTR is connected to a video input terminal o~ the television set, a remote control signal for controlling the VTR is received at a remote control signal receiver of the television set and then transmitted to the VTR.
However, in recent years, novel appliances have been developed and accordinglv kinds of appliances which can be -connected to a video input terminal of a television set have increased so that, in addition to a VTR, for example, a video camera, an 8 mm video recorder, a video disk player and so on may be connected. Accordingly, television sets having a plurali-ty of video input terminals have also been provided.
Fig. 2 illustrates a system wherein appliances such as a VTR
5, an 8 mm video recorder 6 and a video disk player 7 are connected to a television set 4 which has three video input terminals 1, 2, 3, and those appliances 4, 5, 6, 7 are remo-tely controlled using a commander 8.
g~
~6~5 ~ e e- lng to Fig. 2, the appliances 5, 6, 7 are connectQd to ';-3 v-deo input ~erminals 1, 2, 3 via connec~ing lines or cables 9, IO, ll, respectively. The television set 4 includes 2 re~ote con.rol si~nal receiver 12 ror recei~ing an infared ray remota control signal from the commander 8, and a remots control signal received at the signal receiver 12 is then transferred to a control circuit 13 provided in the television set 4 while the remote control signal is transferred also to control circuits 14, 15, 16 provided in the appliances 5, 6, 7, respectively, over a connecting line or cable 17.
The television set 4 further includes an input control circui-t 18 and an input switching circuit 19 therein. Signals which are delivered from the appliances 5, 6, 7 via the terminals 1, 2, 3, respectively, are coupled to the input switching circuit 19. Which one of the appliances 5, 6, 7 is selected, that is, which one of the terminals 1, 2, 3 is selected, is determined in response to an external operation of a keyboard or the like associated with the input control 18. Thus, in response to such an external operation, the input con-trol circuit 18 controls the input switching circuit 19 -to effect a switching operation to transfer a signal received at one of the terminals l, 2, 3 of the television set 4 to an image receiving circuit (not shown).
The co~mander 8 includes various operating keys 20 and a terminal selection switch 21. The selection switch 21 may be in the form of a slide switch having four discrete positions including a position for selection o~ the -television set 4 in which the television set 4 receives a television broadcast in reponse to a selection by the input switching circuit 19 and three other positions for selection of the three terminals 1, 2, 3. Some o~ the operating keys 20 are in common -for the appliances 4, 5, 6, 7, and when a commonly used operating key 20 is operated, a remote control signal having a code corresponding s to a a ~ ac.~on, tha-c is, a selected position, of the selection switch 21 is t-ansmitt~d therefrom. Such commonly used keys include, for exam~le, a channel selection button of a VTR OI a talevision set and a still or pause button OI a VTR or a vi~eo disk player.
According to the construction described above, in case, for example, the VT~ 5 is to be selected via the input control circuit 18 by an external operation, the selection switch 21 of the commander 8 will be shi*ted to the position for selection of the terminal 1. Then, if an operating key 20 is operated, a remote control signal is transmit-ted -thererom and is received at the receiver 12. The remote con-trol signal is then transferred to the control circuit 13 while it is delivered also to the control circuit 14 for the VTR 5 over the connecting line 17.
Consequently, the VTR 5 is caused to operate in a mode corresponding to the contents of the code of -the remote control signal. Thus, in the case of, or example, a reproduction or play mode, a reproduction or play signal is received via the terminal l over the connecting line 9 while it is further supplied to the image receiving circuit described above via the input swi-tching circuit 19. Consequently, a reproduced picture image of the VTR 5 can be monitored on the screen of the television set 4.
Also the other 8 mm video recorder 6 or the video disk player 7 can be caused to operate in a desired mode by remote control by a shifting operation of the selec-tion switch 21 to a position corresponding to the terminal 2 or 3.
In the conventional system of Fig. 2, it is necessary to operate the selection switch 21 o the commander 8 each -time -the input of the terminal 1, 2 or 3 is to be switched. Accordingly, -time or labor for such operation is required, and in case an operation of the salection switch 21 is forgotten or efiacted in ~s~
e~ror, it is impossible to control the aDpliances regularly. To the contrary, if the selec.ion switch 21 is omittad, it will ba im?ossible to use some of tne operating keys 20 commonly to the apD]ian~es a, 5, 6, 7, and consequently ths number of such operating keys 20 will have to be increased for individual kinds of appliances to be connected to the television set 4.
_nmary _f the Invention It is an object of the present invention to provide an electronic appliance which can facili-tate operation of a commander for transmitting a remote control signal for the electronic appliance.
According to the present invention, there is provided a television signal processing apparatus for remotely controlling a plurality of ex-ternal signal sources via a signal cable, comprising: a remote control signal receiver for receiving an infared ray remote control signal from a remote control commander; a plurality of signal input terminals for receiving thereat video signals from said external signal sources; a signal selection switch for selecting one of the signals received at said signal input terminals and a broadcast signal and for delivering the selected signal as an output video signal therefrom; a code converter operable in response to a condition of said signal selection switch for converting a signal received at said remote control signal receiver in-to a code by which the selected signal source can be controlled; and a remote control signal output terminal for supplying an output of said code converter therefrom -to the pertaining signal source via said signal cable. Accordingly, an operation of the special switch for switching the commander for a particular appliance to which the electronic appliance is to be connected can be omitted.
3D~5 The above and othsr objects, features and advantages of the ?resent nvention will become apparent from the followiny cesc- ption and the appended claims, taken in conjunction with the accompanying drzwing.
8rief Description of the Drawings Fig. 1 is a bloc~ diagram illustrating an embodiment OI an electronic appliance according to the present invention; and Flg. 2 is a block diagram illustrating a conventional electronic appliance.
Detailed Description of the P~eferred Embodiment Referring to Fig. l, an embodiment of an electronic appliance according to the present invention is shown. It is to be noted that, in Fig. l, like parts or components are denoted by like reference numberals to those of Fig. 1 and a detailed description of the same is omitted herein to avoid redundancy.
The embodiment shown in Fig. 1 is in the orm of a television set 4 which additionally includes a code converting circuit 22 and a memory 23. Meanwhile, the selection switch 21 of Fig. 2 of the commander 8 is omitted from a commander 8 of Fig. 1.
Thus~ the commander 8 of Fig. 1 is constituted such that if one of a plurality of operating keys 20 is operated, a remote control signal having a code corresponding to an individual mode may be delivered therefrom. In this instance, even when one of the operating keys 20 which are used in common to con-trol appliances ~, 5, 6, 7 is operated, a remote control signal of a same code is delivered therefrom irrespective of a selected appliance.
The code converting circuit 22 converts a code of a signal received at a receiver 12 of the television se-t ~ in response to a switching signal, _o- cont}olling the terminal connection ~2~ 5 developed f-om en ~-.?ul control circui-t 18, by such an ex.enel opera-tion as described above. Meanwhile, data necessary for such code conve~sion 2S desc-lbed ~bove are stored in ths memor-J 23.
Accor~ing to the constr~lction described above, if, for e~ample, the VTR 5 is selected by an external operation, an input switching circuit 19 selects a terminal 1 in response to a switching signal of the input control circuit 18 while the code converting circuit 22 converts a code of a remote control signal received at the receiver 12 in-to another code by which the VTR 5 can be controlled by control unit l~. Thus, the VTR 5 can be controlled by delivering the control signal after such code conversion to a control circuit 14 of the VTR 5 over a connecting line or bus 17.
With -the construction described above, the selection switch 21 of Fig. 2 can be omitted. Accordingly, the time and labor required for operation of the selection switch 21 can be saved without increasing the number of the operating keys 20 of the commander 8, and accordingly operation of the commander 8 can be simplified compared with the conventional system.
While in the present embodiment the television set ~ includes the three video input terminals 1, 2, 3, the present invention can be applied also to a television set which includes a single video input -terminal to which one of -the appliances 5, 6, 7 is selectively connec-ted. In this instance, a control signal after predetermined code conversion can be delivered to a connected appliance by controlling the code converting circuit 22 by -the input control circuit 18.
Meanwhile, it is also possible to display which one of the appliances is being used at presen-t on the screen of the television set ~ in response to a switching signal developed from the input con-trol circuit 18.
~25~
I~ is to be no.ad tha~ -~hlle in the emobidment described herein2bove an electornic _pplienc2 o- the present invention is in the orm of 2 television set which is designed to selectiv-ly -eceive 2 television broadcast or 2 signal received at any o`~
signal input terminals thereof, it may alternatively take ano.her form such as, for example, a signal distributing adapter whic~ is provided separately from a -television set. In this instance, the signal distributing adap-ter may include therein a tuner circuit for receiving a television broadcast.
As apparent from the foregoing description, according to the presen-t invention, a selection switch such as the selection switch 21 of Fig. 2 which is conventionally provided on a commander can be omitted without increasing the number of operating keys on the commander. Accordingly, operatlon of the commander can be simplified, and erroneous operation of the selection switch can be eliminated.
Having now fully described the invention~ it will be apparent to one of ordinary skill in the art that many changes and modifications can be made there-to without departing from the spirit and scope of the invention as set forth herein.
Claims (4)
1. A television signal processing apparatus for remotely controlling a plurality of external signal sources via a signal cable, comprising:
a remote control signal receiver for receiving an infared ray remote control signal from a remote control commander;
a plurality of signal input terminals for receiving thereat video signals from said external signal sources;
a signal selection switch for selecting one of the signals received at said signal input terminals and a broadcast signal and for delivering the selected signal as an output video signal therefrom;
a code converter operable in response to a condition of said signal selection switch for converting a signal received at said remote control signal receiver into a code by which the pertaining signal source can be controlled; and a remote control signal output terminal for supplying an output of said code converter thereform to the pertaining signal source via said signal cable.
a remote control signal receiver for receiving an infared ray remote control signal from a remote control commander;
a plurality of signal input terminals for receiving thereat video signals from said external signal sources;
a signal selection switch for selecting one of the signals received at said signal input terminals and a broadcast signal and for delivering the selected signal as an output video signal therefrom;
a code converter operable in response to a condition of said signal selection switch for converting a signal received at said remote control signal receiver into a code by which the pertaining signal source can be controlled; and a remote control signal output terminal for supplying an output of said code converter thereform to the pertaining signal source via said signal cable.
2. A television signal processing apparatus according to claim 1, wherein said television signal processing apparatus is a television set.
3. A television signal processing apparatus according to claim l, wherein said television processing apparatus is a signal distributing adapter provided separately from a television set.
4. A television signal processing apparatus according to claim 3, wherein said signal distributing adapter includes a tuner circuit for receiving a television broadcast.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61127590A JPH07105895B2 (en) | 1986-06-02 | 1986-06-02 | Electronics |
| JP127590/86 | 1986-06-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1256945A true CA1256945A (en) | 1989-07-04 |
Family
ID=14963839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000538494A Expired CA1256945A (en) | 1986-06-02 | 1987-06-01 | Remote control system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4817203A (en) |
| JP (1) | JPH07105895B2 (en) |
| KR (1) | KR960004507B1 (en) |
| CA (1) | CA1256945A (en) |
| GB (1) | GB2191643B (en) |
| HK (1) | HK69794A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2449379A1 (en) * | 1979-02-15 | 1980-09-12 | Scart | AUDIO-VIDEO DYNAMIC INTERCONNECTION SYSTEM |
| DE3036552C2 (en) * | 1980-09-27 | 1985-04-25 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Television reception system |
| US4386436A (en) * | 1981-02-27 | 1983-05-31 | Rca Corporation | Television remote control system for selectively controlling external apparatus through the AC power line |
| JPS57176507A (en) * | 1981-04-20 | 1982-10-29 | Hitachi Ltd | Function operating system |
| US4482947A (en) * | 1982-04-12 | 1984-11-13 | Zenith Electronics Corporation | Multi-function, multi-unit remote control system and method therefor |
| US4539711A (en) * | 1983-05-02 | 1985-09-03 | Rca Corporation | Tuning control system for a pair of tuners employing a common channel skip memory |
| JPS6047373U (en) * | 1983-09-09 | 1985-04-03 | カシオ計算機株式会社 | television receiver |
| JPS6167397A (en) * | 1984-09-11 | 1986-04-07 | Matsushita Electric Ind Co Ltd | Device control system |
-
1986
- 1986-06-02 JP JP61127590A patent/JPH07105895B2/en not_active Expired - Lifetime
-
1987
- 1987-05-29 US US07/055,325 patent/US4817203A/en not_active Expired - Lifetime
- 1987-06-01 GB GB8712796A patent/GB2191643B/en not_active Expired
- 1987-06-01 CA CA000538494A patent/CA1256945A/en not_active Expired
- 1987-06-01 KR KR1019870005509A patent/KR960004507B1/en not_active IP Right Cessation
-
1994
- 1994-07-21 HK HK69794A patent/HK69794A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR880001154A (en) | 1988-03-31 |
| JPS62284583A (en) | 1987-12-10 |
| JPH07105895B2 (en) | 1995-11-13 |
| KR960004507B1 (en) | 1996-04-06 |
| GB2191643B (en) | 1989-12-20 |
| GB2191643A (en) | 1987-12-16 |
| US4817203A (en) | 1989-03-28 |
| HK69794A (en) | 1994-07-29 |
| GB8712796D0 (en) | 1987-07-08 |
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