CN100407246C - Remote control signal transmitting chip - Google Patents
Remote control signal transmitting chip Download PDFInfo
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- CN100407246C CN100407246C CN2005100220553A CN200510022055A CN100407246C CN 100407246 C CN100407246 C CN 100407246C CN 2005100220553 A CN2005100220553 A CN 2005100220553A CN 200510022055 A CN200510022055 A CN 200510022055A CN 100407246 C CN100407246 C CN 100407246C
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- remote control
- control signal
- systematic code
- signal transmitting
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Abstract
The present invention relates to a remote control technique, particularly to a remote control signal system code switching technique. The present invention solves the problem that the existing remote controller can not be universally used. The present invention discloses a remote control signal emitting chip which can conveniently switch remote control signal system codes, and thereby, the purpose that one remote controller is shared by multiple facilities is achieved by switching system codes. In order to solve the technical problem, the present invention adopts the technical scheme that a system code switching circuit is arranged in the remote control signal emitting chip; the system code switching circuit receives trigger signals input from outside and changes system codes of emitted signals. The present invention has the advantages that the universal use of the remote controller within a certain range is realized basically without the need of increasing the cost of the system, the system structure is largely simplified, and convenience is brought to user operation. The present invention can be applied to the field of infrared remote control, and is suitable for other fields of wireless remote control at the same time.
Description
Technical field
The present invention relates to telecontrol engineering, particularly remote signal systematic code handoff technique.
Background technology
Common remote control signal transmitting chip, under the prerequisite that does not change its peripheral circuit, the systematic code of being signaled (or title " identification code ") is changeless.In order to change the control of remote controller object, generally be to realize by the systematic code that changes the remote control signal transmitting chip emission.Different controlling object has its specific systematic code.Prior art is to change its systematic code that transmits by changing remote control signal transmitting chip peripheral hardware circuit, reaching.Infrared remote-controlled signal transmitting chip μ pd6122 (NEC Corporation's product) and the compatible chip thereof that generally uses for example, its telechirics sign indicating number by most-significant byte and least-significant byte totally 16 form, can from 0000000000000000 to 1111111111111111, have 2
16Plant different systematic codes, can distribute to different remotely-controlled objects.The systematic code of this series telepilot is set by peripheral resistance, the diode combinations circuit of remote control signal transmitting chip.
The systematic code most-significant byte by whether being connected with diode between chip CCS pin and KI/O0～7 pins decides.When being connected with diode, corresponding systematic code position just is changed to 1, otherwise corresponding systematic code position just is changed to 0.
The setting of the least-significant byte of systematic code decides by the pull-up resistor that is connected between KI/O0～7 and the VDD.When being connected with pull-up resistor, then corresponding position is just identical with corresponding positions in the most-significant byte systematic code in the least-significant byte systematic code; Otherwise then corresponding position is exactly systematic code corresponding positions negate in the most-significant byte in the least-significant byte systematic code.
Change the systematic code of remote signal, must change the peripheral circuit of remote control signal transmitting chip.Otherwise, even if adopt the different machines of identical remote control signal transmitting chip, as the televisor in the common household audio and video system, DVD player, power amplifier, set-top box etc., can not realize the general of telepilot, cause the operation of a system, need use a plurality of telepilots with varying, very inconvenient.
Summary of the invention
Technical matters to be solved by this invention is exactly at having the shortcoming that telepilot can not be general now, a kind of remote control signal transmitting chip that can conveniently switch the remote signal systematic code is provided, reaching the purpose of the shared telepilot of multiple devices by the switched system sign indicating number.
The present invention solve the technical problem, and the technical scheme of employing is, remote control signal transmitting chip, and described remote control signal transmitting chip is built-in with the systematic code commutation circuit; Described systematic code commutation circuit receives the trigger pip of outside input, changes the systematic code that transmits.
The invention has the beneficial effects as follows, need not increase system cost basically, just realized within the specific limits general of telepilot, greatly simplified system architecture, for user's operation has brought convenience.
Description of drawings
Fig. 1 is the structured flowchart of remote control signal transmitting chip;
Fig. 2 is the remote control circuitry schematic diagram;
Fig. 3 is the continuous switching flow figure of systematic code;
Fig. 4 is the switching flow figure between several fixed system sign indicating numbers;
Fig. 5 is a remote signal coded format synoptic diagram.
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
The present invention adopts FPGA method for designing, hardware description language Verilog programming, and the system design common technology means of " top-down ", in remote control signal transmitting chip, increase systematic code commutation circuit and related software functional module, when needs conversion remotely-controlled object, by simple trigger circuit, to systematic code commutation circuit input trigger pip, change the systematic code of remote control signal transmitting chip emission, just can change remotely-controlled object.
Technical scheme of the present invention is, remote control signal transmitting chip, and described remote control signal transmitting chip is built-in with the systematic code commutation circuit; Described systematic code commutation circuit receives the trigger pip of outside input, changes the systematic code that transmits;
Described trigger pip is continuous level or impulse level;
Described trigger pip is a high level signal;
Described remote control signal transmitting chip is the infrared remote control signal transmitting chip.
Embodiment
Remote-controlled chip structure of the present invention as shown in Figure 1, wherein:
Oscillatory circuit, frequency divider and clock circuit---the clock that is used for importing produces the carrier wave of emission remote signal through frequency division, produces the chip internal clock of 0.56ms simultaneously.Being treated to dutycycle such as the 455kHz external clock that with dutycycle is 1: 1 is 1: 3 38kHz carrier signal.
Keyboard input circuit and keyboard output circuit---be used for 8 * 8 key-press matrix is scanned judgement, obtain corresponding data key thereby find out the key that is pressed.
Data register---systematic code, the numeric data code that will send are temporary, wait to be sent.
Control circuit---by the control of a series of timers, state machine etc., reach and when send out all-key, when send out brevity code and other control function, go shake time-delay control etc. as button.
Output circuit---be used in conjunction with control signal, systematic code in the register and numeric data code are sent according to standard format.
The systematic code testing circuit---be used to detect the systematic code that the combination of diode and resistance sets.
The systematic code commutation circuit---the trigger pip according to input changes systematic code numerical value.This part circuit can change the systematic code that transmits according to the continuous level or the impulse level of external circuit input in conjunction with software function.
Fig. 2 is the circuit diagram of telepilot.This is the typical circuit connection layout of telepilot, is as good as with normal remote control.Different is, in its used remote control signal transmitting chip inside, and built-in systematic code commutation circuit; In chip exterior, increased the state switch key Kset of a switched system sign indicating number, be used for producing the trigger pip that changes systematic code.
Resistance among Fig. 2, diode combinations circuit are used for systematic code is provided with, and this is provided with principle identical (for example μ pd6122 and compatible family thereof) with common infrared remote-controlled signal transmitting chip peripheral system sign indicating number.Systematic code is set to 40BFH in this example---the TV remote-control state.Other components and parts merits among Fig. 2, can act on same as the prior artly, describe in detail no longer one by one herein.
Button Kset is the systematic code switch key.Button Kset links to each other with positive source VDD by resistance R 1, is used for to systematic code commutation circuit input trigger pip.By Kset the mode of two kinds of switched system sign indicating numbers is arranged, a kind of is that the chip exterior circuit is not taken over diode and the resistance that how to be used to be provided with systematic code numerical value, and all systematic codes of remote control signal transmitting chip are all set by Kset.Pin Kset and do not put, be equivalent to import continuous high level, the quick increasing or decreasing of numerical value meeting of systematic code unclamps button during to required numerical value and gets final product.This systematic code switching mode software flow is seen Fig. 3.Another kind of mode is being connected of fixed outer diode and resistance, has just determined some systematic code numerical value, and as shown in this example, systematic code is fixed as 40BFH.The systematic code commutation circuit only changes limited several states, whenever press Kset one next state and switch once, this moment, the conversion of systematic code was discontinuous, systematic code saltus step between some fixing value, the value of systematic code is by peripheral circuit and system software decision, and program circuit is seen Fig. 4.
Fig. 5 shows the waveform configuration of remote signal.Remote signal is made up of three parts usually: preamble code, systematic code and numeric data code.Wherein, systematic code is by C
0～C
7Most-significant byte data and C
0'～C
7' least-significant byte data constitute, and are used to distinguish different remotely-controlled objects; Numeric data code is by D
0～D
7Most-significant byte data and D
0～D
7The least-significant byte data constitute, and are used to transmit control command.
Only at four kinds of states, promptly TV remote-control state (corresponding systematic code is set at " 40BFH "), DVD remote state (systematic code is set at " 01FEH "), DVB remote state (systematic code is set at " 02FDH "), power amplifier remote state (systematic code is set at " 04FBH ") describe for example below:
Default conditions: telepilot has the TV remote function at this moment, and systematic code is set at " 40BFH " by the chip periphery circuit.(certainly, also can be set at the arbitrary numerical value in " 0000H～FFFFH ") pressed teleswitch and can be carried out the remote control of maximum 64 kinds of functions to televisor.
DVD remote state: when needs carry out remote control to DVD, just press on the telepilot switch key once, it is 1 time that chip internal systematic code commutation circuit detects the number of times that switch key presses, thereby with the systematic code setting value is " 01FEH ", and then by other module cooperative running, the switching signal of this moment is sent, made the remote state that shows on the televisor be " DVD remote state (01FEH) ".This moment, the systematic code of other function key just changed to the systematic code of DVD automatically, and button is pressed the remote signal of being sent out the back can carry out remote control to DVD.
Other state: principle is the same.
In sum as can be seen, only need press a switch key, needn't change any peripheral circuit, just can easily reach the general purpose of telepilot.
The signal system sign indicating number of emission is fixed as the systematic code 40BFH of televisor when here the Kset key being switched, so that televisor shows controlling object, user friendly operation.Certainly, as required, also can adopt other remotely-controlled objects, come the remote state of display remote controller, even can on telepilot, increase the remote state deixis with Presentation Function.
The present invention be in compatibility existing on the market certain class remote control signal transmitting chip all properties (comprise can have by bond number, can the outside systematic code scope that changes, low-work voltage, low current loss etc.) the basis on, but increased the function that singly-bound is provided with the remote signal systematic code again.It not only can apply to the infrared remote control field, also is applicable to other wireless remote control field simultaneously.
Claims (4)
1. remote control signal transmitting chip, it is characterized in that: described remote control signal transmitting chip is built-in with the systematic code commutation circuit; Described systematic code commutation circuit receives the trigger pip of outside input, changes the systematic code that transmits.
2. remote control signal transmitting chip according to claim 1 is characterized in that: described trigger pip is continuous level or impulse level.
3. remote control signal transmitting chip according to claim 2 is characterized in that: described trigger pip is a high level signal.
4. according to claim 1,2 or 3 described remote control signal transmitting chips, it is characterized in that: described remote control signal transmitting chip is the infrared remote control signal transmitting chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100220553A CN100407246C (en) | 2005-11-11 | 2005-11-11 | Remote control signal transmitting chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100220553A CN100407246C (en) | 2005-11-11 | 2005-11-11 | Remote control signal transmitting chip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1808514A CN1808514A (en) | 2006-07-26 |
| CN100407246C true CN100407246C (en) | 2008-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100220553A Expired - Fee Related CN100407246C (en) | 2005-11-11 | 2005-11-11 | Remote control signal transmitting chip |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114120619B (en) * | 2021-11-12 | 2023-10-10 | 天津朗泽科技有限公司 | Device and method for detecting matching relation of radio remote control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05336570A (en) * | 1992-06-04 | 1993-12-17 | Olympus Optical Co Ltd | Remote control transmitter and controlled equipment |
| US5539391A (en) * | 1994-09-22 | 1996-07-23 | Gemstar Development Corporation | Remote controller for controlling turning appliances on and off |
| CN1395228A (en) * | 2001-07-06 | 2003-02-05 | 张增芳 | Remote controller |
| CN2710069Y (en) * | 2004-07-23 | 2005-07-13 | 上海广电（集团）有限公司中央研究院 | Remote control system for separate remote controlling to multiple same remote-controlled objects |
-
2005
- 2005-11-11 CN CN2005100220553A patent/CN100407246C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05336570A (en) * | 1992-06-04 | 1993-12-17 | Olympus Optical Co Ltd | Remote control transmitter and controlled equipment |
| US5539391A (en) * | 1994-09-22 | 1996-07-23 | Gemstar Development Corporation | Remote controller for controlling turning appliances on and off |
| CN1395228A (en) * | 2001-07-06 | 2003-02-05 | 张增芳 | Remote controller |
| CN2710069Y (en) * | 2004-07-23 | 2005-07-13 | 上海广电（集团）有限公司中央研究院 | Remote control system for separate remote controlling to multiple same remote-controlled objects |
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| CN1808514A (en) | 2006-07-26 |
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Granted publication date: 20080730 Termination date: 20171111 |
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| CF01 | Termination of patent right due to non-payment of annual fee |