CN203520627U - Infrared receiver and infrared remote control system - Google Patents
Infrared receiver and infrared remote control system Download PDFInfo
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- CN203520627U CN203520627U CN201320487609.7U CN201320487609U CN203520627U CN 203520627 U CN203520627 U CN 203520627U CN 201320487609 U CN201320487609 U CN 201320487609U CN 203520627 U CN203520627 U CN 203520627U
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Abstract
The utility model discloses an infrared receiver and a television set with the infrared receiver. The infrared receiver comprises a non-demodulated signal output end, a demodulated signal output end, an infrared receiving module for receiving an infrared signal and a frequency demodulation module for demodulating the infrared signal received by the infrared receiving module, wherein the output end of the infrared receiving module is connected with the non-demodulated signal output end and the input end of the frequency demodulation module; the output end of the frequency demodulation module is connected with the demodulated signal output end. According to the infrared receiver, a circuit structure of an infrared remote control system is simplified, so that the overall production cost of a circuit is reduced.
Description
Technical field
The utility model relates to Infrared Ray Remote Control Technology field, particularly a kind of infrared remote receiver and infrared remote control system.
Background technology
Along with people's living standard constantly improves, the increasing user of family has had LED TV, vision on image has met client's demand, but the sound effect of the CRT TV because current LED TV is thin before cannot reaching in tonequality, therefore there is supporting with it sound-box device thereupon, but when sound-box device that ought be supporting with it and TV are put into one, always how much affect the remote control reception effect of TV.
In prior art in order to improve the remote signal of TV, two infrared remote receivers are set conventionally in sound-box device, one of them infrared remote receiver carries out exporting to after the demodulation of remote signal the MCU of sound-box device by corresponding frequency demodulation circuit, another infrared remote receiver is transmitted to televisor by corresponding infrared transmitting circuit is set by the infrared remote-controlled signal receiving again.This scheme, because needs arrange two infrared remote receivers, therefore also needs to set up corresponding peripheral circuit, thereby makes the integral production cost of circuit higher, is unsuitable for commercial production.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of infrared remote receiver, is intended to simplify the circuit structure of infrared remote control system, reduces the integral production cost of circuit.
To achieve these goals, the utility model provides a kind of infrared remote receiver, and described infrared remote receiver comprises restituted signal output terminal not, restituted signal output terminal, for receiving the infrared receiving module of infrared signal and the frequency demodulation module of carrying out demodulation for the infrared signal that infrared receiving module is received; The output terminal of wherein said infrared receiving module is connected with the input end of frequency demodulation module with restituted signal output terminal not respectively; The output terminal of described frequency demodulation module is connected with described restituted signal output terminal.
Preferably, described infrared remote receiver also comprises power input and earth terminal, and described infrared receiving module comprises infrared receiving tube, the first triode, the second triode, the first resistance and the second resistance; Wherein said the first triode is PNP triode, and its base stage is connected with described earth terminal by infrared receiving tube, and emitter is connected with described power input, and collector is connected with earth terminal by described the first resistance; Described the second triode is NPN triode, its base stage is connected with the collector of described the first triode, the emitter of described the second triode is connected with earth terminal, the output terminal of the very described infrared receiving module of current collection, the collector of described the second triode is connected with described power input by the second resistance.
Preferably, described infrared receiving tube is infrared receiving diode, and the positive pole of described infrared receiving diode is connected with described earth terminal, and negative pole is connected with the base stage of described the first triode.
Preferably, described frequency demodulation module comprises: for carrying out the automatic gain of signal amplification, control amplifying unit, for the bandpass filtering unit of filtering with for carrying out demodulation shaping unit, the 3rd triode and the 3rd resistance of signal demodulation and wave shaping, the input end that wherein said automatic gain is controlled amplifying unit is the input end of described frequency demodulation module, and output terminal is connected with the input end of described bandpass filtering unit; The input end of described demodulation shaping unit is connected with the output terminal of described bandpass filtering unit, and output terminal is connected with the base stage of described the 3rd triode; Described the 3rd triode is NPN triode, and its emitter is connected with described earth terminal, the output terminal of the very described frequency demodulation module of current collection, and the collector of described the 3rd triode is connected with described power input by the 3rd resistance.
Preferably, described frequency demodulation module also comprises control module, and the input end of described control module is connected with the output terminal of described bandpass filtering unit, and output terminal is connected with the control end that described automatic gain is controlled amplifying unit; Described control module outputs control signals to automatic gain according to the signal amplitude of described bandpass filtering unit output and controls amplifying unit, and described automatic gain is controlled adjusting described automatic gain according to described control signal and controlling the amplitude that amplifying unit amplifies signal of amplifying unit.
The utility model also provides a kind of infrared remote control system, described infrared remote control system comprises infrared remote receiver and for launching the infrared transmitting circuit of infrared signal, and described infrared remote receiver comprises not restituted signal output terminal, restituted signal output terminal, for receiving the infrared receiving module of infrared signal and for infrared signal being carried out to the frequency demodulation module of demodulation; The output terminal of wherein said infrared receiving module is connected with the input end of frequency demodulation module with restituted signal output terminal not respectively; The output terminal of described frequency demodulation module is connected with described restituted signal output terminal; The input end of described infrared transmitting circuit is connected with the not restituted signal output terminal of described infrared remote receiver.
Preferably, described infrared transmitting circuit comprises the 4th triode, the 5th triode, the 4th resistance, the 5th resistance, the 6th resistance and infrared-emitting diode, wherein said the 4th triode is NPN triode, its base stage is connected with described not restituted signal output terminal by the 4th resistance, emitter is connected with described earth terminal, and collector is connected with described power input by the 5th resistance; Described the 5th triode is NPN triode, and its base stage is connected with the collector of described the 4th triode, and emitter is connected with described earth terminal, and collector is connected with the negative pole of described infrared-emitting diode; The positive pole of described infrared-emitting diode is connected with described power input by described the 6th resistance.
Preferably, described infrared remote control system also comprises the first controlled terminal and the second controlled terminal, wherein said infrared remote receiver and infrared transmitting circuit are located in described the first controlled terminal, and the control chip of described the first controlled terminal is connected with the restituted signal output terminal of described infrared remote receiver; Described the second controlled terminal is provided with for receiving the receiving circuit of the signal of described infrared transmitting circuit output.
The utility model is by being connected with restituted signal output terminal not the output terminal of infrared receiving module respectively with the input end of frequency demodulation module, when infrared receiving module receives infrared remote-controlled signal, export respectively the infrared remote-controlled signal of not demodulation to frequency demodulation module and restituted signal output terminal not; When frequency demodulation module receives the infrared remote-controlled signal of not demodulation, will carry out demodulation to this infrared remote-controlled signal and obtain former remote control coding signal, and export this former remote control coding signal to restituted signal output terminal.The infrared remote receiver providing due to the utility model can receive infrared remote-controlled signal, and export the infrared remote-controlled signal of not demodulation and the infrared remote-controlled signal of demodulation simultaneously, while therefore this infrared remote receiver being applied in infrared remote control system, without being provided with separately respectively output restituted signal and exporting the not infrared remote receiver of restituted signal in controlled terminal, can simplify the circuit structure of infrared remote control system, thereby reduce the integral production cost of circuit.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the utility model infrared remote receiver one embodiment;
Fig. 2 is the structural representation of infrared transmitting circuit in the utility model infrared remote control system one embodiment.
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of infrared remote receiver.
With reference to Fig. 1, Fig. 1 is the electrical block diagram of the utility model infrared remote receiver one embodiment.The infrared remote receiver that the utility model provides comprises not restituted signal output terminal 10, restituted signal output terminal 20, for receiving the infrared receiving module 30 of infrared signal and for the infrared signal receiving being carried out to the frequency demodulation module 40 of demodulation; The output terminal of wherein said infrared receiving module 30 is connected with the input end of frequency demodulation module 40 with restituted signal output terminal 10 not respectively; The output terminal of described frequency demodulation module 40 is connected with described restituted signal output terminal 20.
The utility model is by being connected with restituted signal output terminal 10 not the output terminal of infrared receiving module 30 respectively with the input end of frequency demodulation module 40, when infrared receiving module 30 receives infrared remote-controlled signal, export respectively the infrared remote-controlled signal of not demodulation to frequency demodulation module 40 and restituted signal output terminal 10 not; When frequency demodulation module 40 receives the infrared remote-controlled signal of not demodulation, will carry out demodulation to this infrared remote-controlled signal and obtain former remote control coding signal, and export this former remote control coding signal to restituted signal output terminal 20.The infrared remote receiver providing due to the utility model can receive infrared remote-controlled signal, and export the infrared remote-controlled signal of not demodulation and the infrared remote-controlled signal of demodulation simultaneously, while therefore this infrared remote receiver being applied in infrared remote control system, without being provided with separately respectively output restituted signal and exporting the not infrared remote receiver of restituted signal in controlled terminal, can simplify the circuit structure of infrared remote control system, thereby reduce the integral production cost of circuit.
Further, based on above-described embodiment, in the present embodiment, above-mentioned infrared remote receiver also comprises power input 50 and earth terminal 60, and described infrared receiving module 30 comprises infrared receiving tube 31, the first triode Q1, the second triode Q2, the first resistance R 1 and the second resistance R 2; Wherein said the first triode Q1 is PNP triode, and its base stage is connected with described earth terminal 60 by infrared receiving tube 31, and emitter is VCC end with described power input 50() be connected, collector is connected with earth terminal 60 by described the first resistance R 1; Described the second triode Q2 is NPN triode, its base stage is connected with the collector of described the first triode Q1, emitter is connected with earth terminal 60, the output terminal of the very described infrared receiving module 30 of current collection, the collector of described the second triode Q2 is connected with described power input 50 by the second resistance R 2.
In the present embodiment, during the signal that the infrared receiving tube 31 of establishing in above-mentioned infrared remote receiver receives (former remote control modulating coding signal), the base current I of the first triode Q1 is changed, the electric current changing is reflected to its collector, the electric current that collector flows through the first resistance R 1 is changed, thereby in the first resistance R 1, form the pulse voltage (being the conversion of I/V) of low and high level.Pulse voltage in the first resistance R 1, after the second triode Q2 amplifies, is exported the signal (the not infrared remote-controlled signal of demodulation) amplifying from the second triode Q2 collector.
Should be noted that, above-mentioned infrared receiving tube 31 is for can receive the light receiving tube of infrared signal arbitrarily, the present embodiment is preferably infrared receiving diode, and the positive pole of described infrared receiving diode is connected with described earth terminal 60, and negative pole is connected with the base stage of described the first triode Q1.
Particularly, said frequencies demodulation module 40 comprises: for carrying out the automatic gain of signal amplification, control amplifying unit 41, for the bandpass filtering unit 42 of filtering with for carrying out demodulation shaping unit 43, the 3rd triode Q3 and the 3rd resistance R 3 of signal demodulation and wave shaping, the input end that wherein said automatic gain is controlled amplifying unit 41 is the input end of described frequency demodulation module 40, and output terminal is connected with the input end of described bandpass filtering unit 42; The input end of described demodulation shaping unit 43 is connected with the output terminal of described bandpass filtering unit 42, and output terminal is connected with the base stage of described the 3rd triode Q3; Described the 3rd triode Q3 is NPN triode, and its emitter is connected with described earth terminal 60, the output terminal of the very described frequency demodulation module 40 of current collection, and the collector of described the 3rd triode Q3 is connected with described power input 50 by the 3rd resistance R 3.
In the present embodiment, when above-mentioned automatic gain control amplifying unit 41 receives the infrared remote-controlled signal of above-mentioned not demodulation, to carry out that signal amplifies and constant output 42 is carried out filtering to bandpass filtering unit, bandpass filtering unit 42 carries out signal being exported to after filtering operation demodulation shaping unit and carries out the infrared remote-controlled signal (being former remote control coding signal) that demodulation and wave shaping obtain demodulation.It should be noted that when this remote control coding signal is the remote signal of control televisor the controlled device being connected with this restituted signal output terminal 20 (will not carry out any operation).
Further, said frequencies demodulation module 40 also comprises control module 44, and the input end of described control module 44 is connected with the output terminal of described bandpass filtering unit 42, and output terminal is connected with the control end that described automatic gain is controlled amplifying unit 41; Described control module 44 outputs control signals to automatic gain according to the signal amplitude of described bandpass filtering unit 42 output and controls amplifying unit 41, and described automatic gain is controlled adjusting described automatic gain according to described control signal and controlling the amplitude that 41 pairs of signals of amplifying unit amplify of amplifying unit 41.
In the present embodiment, by being set, the signal of 44 pairs of bandpass filtering unit of control module, 42 outputs carries out voltage sample, and compare and output control signals to automatic gain control amplifying unit 42 according to signal and the predeterminated voltage value of sampling, thereby adjust automatic gain and control the amplitude that 41 pairs of signals of amplifying unit amplify, and then improve automatic gain and control the stability that 41 pairs of signals of amplifying unit amplify, to guarantee the stability of circuit.
The utility model also provides a kind of infrared remote control system, and in conjunction with seeing figures.1.and.2, Fig. 2 is the structural representation of infrared transmitting circuit in the utility model infrared remote control system one embodiment.The infrared remote control system that the present embodiment provides comprises infrared remote receiver and for launching the infrared transmitting circuit of infrared signal, the input end of described infrared transmitting circuit is connected with the not restituted signal output terminal 10 of described infrared remote receiver.Described infrared remote receiver is the infrared remote receiver in above-described embodiment, its concrete structure and principle can be with reference to above-described embodiments, do not repeat them here, natural, the infrared receiving system providing due to the present embodiment has adopted the technical scheme of the infrared remote receiver in above-described embodiment, so this infrared receiving system has all beneficial effects of above-mentioned infrared remote receiver.
Particularly, above-mentioned infrared transmitting circuit comprises the 4th triode Q4, the 5th triode Q5, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6 and infrared-emitting diode D1, wherein said the 4th triode Q4 is NPN triode, its base stage is connected with described not restituted signal output terminal 10 by the 4th resistance R 4, emitter is connected with described earth terminal, and collector is connected with described power input VCC by the 5th resistance R 5; Described the 5th triode Q5 is NPN triode, and its base stage is connected with the collector of described the 4th triode Q4, and emitter and described earth terminal 60 connect, and collector is connected with the negative pole of described infrared-emitting diode D1; The positive pole of described infrared-emitting diode D1 is connected with described power input 50 by described the 6th resistance R 6.
Further based on above-described embodiment, in the present embodiment, referring to Fig. 1, above-mentioned infrared remote control system also comprises the first controlled terminal and the second controlled terminal, wherein said infrared remote receiver and infrared transmitting circuit are located in described the first controlled terminal, and the control chip of described the first controlled terminal is connected with the restituted signal output terminal 20 of described infrared remote receiver; Described the second controlled terminal is provided with for receiving the receiving circuit of the signal of described infrared transmitting circuit output.
Should be noted that above-mentioned infrared remote control system can be applicable to can carry out arbitrarily in the middle of the equipment of straighforward operation, in the present embodiment, to be applied in television system, is described in detail.Particularly, at above-mentioned the first controlled terminal, can be sound-box device, above-mentioned the second controlled terminal can be televisor.In the present embodiment owing to being provided with above-mentioned infrared remote receiver and infrared transmitting circuit in sound-box device, thereby can by infrared remote receiver, the infrared remote-controlled signal of demodulation be exported to the MCU of audio amplifier, the infrared remote-controlled signal of not demodulation is transmitted to the receiving circuit of televisor by infrared transmitting circuit.Therefore can well the remote signal of televisor be transmitted to televisor, not be subject to the restriction of putting of sound-box device, no longer worry that sound-box device covers the remote control reception head of televisor and makes TV remote-control inoperative, thereby improved antijamming capability.
These are only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. an infrared remote receiver, is characterized in that, comprises restituted signal output terminal not, restituted signal output terminal, for receiving the infrared receiving module of infrared signal and the frequency demodulation module of carrying out demodulation for the infrared signal that infrared receiving module is received; The output terminal of wherein said infrared receiving module is connected with the input end of frequency demodulation module with restituted signal output terminal not respectively; The output terminal of described frequency demodulation module is connected with described restituted signal output terminal.
2. infrared remote receiver as claimed in claim 1, is characterized in that, described infrared remote receiver also comprises power input and earth terminal, and described infrared receiving module comprises infrared receiving tube, the first triode, the second triode, the first resistance and the second resistance; Wherein said the first triode is PNP triode, and its base stage is connected with described earth terminal by infrared receiving tube, and emitter is connected with described power input, and collector is connected with earth terminal by described the first resistance; Described the second triode is NPN triode, its base stage is connected with the collector of described the first triode, the emitter of described the second triode is connected with earth terminal, the output terminal of the very described infrared receiving module of current collection, the collector of described the second triode is connected with described power input by the second resistance.
3. infrared remote receiver as claimed in claim 2, is characterized in that, described infrared receiving tube is infrared receiving diode, and the positive pole of described infrared receiving diode is connected with described earth terminal, and negative pole is connected with the base stage of described the first triode.
4. infrared remote receiver as claimed in claim 2, it is characterized in that, described frequency demodulation module comprises: for carrying out the automatic gain of signal amplification, control amplifying unit, for the bandpass filtering unit of filtering with for carrying out demodulation shaping unit, the 3rd triode and the 3rd resistance of signal demodulation and wave shaping, the input end that wherein said automatic gain is controlled amplifying unit is the input end of described frequency demodulation module, and output terminal is connected with the input end of described bandpass filtering unit; The input end of described demodulation shaping unit is connected with the output terminal of described bandpass filtering unit, and output terminal is connected with the base stage of described the 3rd triode; Described the 3rd triode is NPN triode, and its emitter is connected with described earth terminal, the output terminal of the very described frequency demodulation module of current collection, and the collector of described the 3rd triode is connected with described power input by the 3rd resistance.
5. infrared remote receiver as claimed in claim 4, it is characterized in that, described frequency demodulation module also comprises control module, and the input end of described control module is connected with the output terminal of described bandpass filtering unit, and its output terminal is connected with the control end that described automatic gain is controlled amplifying unit; Described control module outputs control signals to automatic gain according to the signal amplitude of described bandpass filtering unit output and controls amplifying unit, and described automatic gain is controlled adjusting described automatic gain according to described control signal and controlling the amplitude that amplifying unit amplifies signal of amplifying unit.
6. an infrared remote control system, it is characterized in that, comprise infrared remote receiver as described in any one in claim 1 to 5 and for launching the infrared transmitting circuit of infrared signal, the input end of described infrared transmitting circuit is connected with the not restituted signal output terminal of described infrared remote receiver.
7. infrared remote control system as claimed in claim 6, it is characterized in that, described infrared transmitting circuit comprises the 4th triode, the 5th triode, the 4th resistance, the 5th resistance, the 6th resistance and infrared-emitting diode, wherein said the 4th triode is NPN triode, its base stage is connected with described not restituted signal output terminal by the 4th resistance, emitter is connected with earth terminal, and collector is connected with power input by the 5th resistance; Described the 5th triode is NPN triode, and its base stage is connected with the collector of described the 4th triode, and emitter is connected with described earth terminal, and collector is connected with the negative pole of described infrared-emitting diode; The positive pole of described infrared-emitting diode is connected with described power input by described the 6th resistance.
8. infrared remote control system as claimed in claim 7, it is characterized in that, described infrared remote control system also comprises the first controlled terminal and the second controlled terminal, wherein said infrared remote receiver and infrared transmitting circuit are located in described the first controlled terminal, and the control chip of described the first controlled terminal is connected with the restituted signal output terminal of described infrared remote receiver; Described the second controlled terminal is provided with for receiving the receiving circuit of the signal of described infrared transmitting circuit output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487609.7U CN203520627U (en) | 2013-08-09 | 2013-08-09 | Infrared receiver and infrared remote control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320487609.7U CN203520627U (en) | 2013-08-09 | 2013-08-09 | Infrared receiver and infrared remote control system |
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| CN203520627U true CN203520627U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320487609.7U Expired - Fee Related CN203520627U (en) | 2013-08-09 | 2013-08-09 | Infrared receiver and infrared remote control system |
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| CN (1) | CN203520627U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106878785A (en) * | 2017-02-17 | 2017-06-20 | 昆山康佳电子有限公司 | A kind of TV with acoustic control program guide |
| CN108182796A (en) * | 2018-01-23 | 2018-06-19 | 浙江国视科技有限公司 | A kind of IR remote controller and remote control thereof |
| CN110167234A (en) * | 2019-06-10 | 2019-08-23 | 宁波颐道照明有限公司 | A kind of light modulation toning LED lamp circuit |
-
2013
- 2013-08-09 CN CN201320487609.7U patent/CN203520627U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106878785A (en) * | 2017-02-17 | 2017-06-20 | 昆山康佳电子有限公司 | A kind of TV with acoustic control program guide |
| CN108182796A (en) * | 2018-01-23 | 2018-06-19 | 浙江国视科技有限公司 | A kind of IR remote controller and remote control thereof |
| CN110167234A (en) * | 2019-06-10 | 2019-08-23 | 宁波颐道照明有限公司 | A kind of light modulation toning LED lamp circuit |
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