CN203733295U - Infrared forwarding circuit and sound box - Google Patents
Infrared forwarding circuit and sound box Download PDFInfo
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- CN203733295U CN203733295U CN201320870377.3U CN201320870377U CN203733295U CN 203733295 U CN203733295 U CN 203733295U CN 201320870377 U CN201320870377 U CN 201320870377U CN 203733295 U CN203733295 U CN 203733295U
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- infrared
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Abstract
The utility model discloses an infrared forwarding circuit and a sound box. The infrared forwarding circuit comprises an infrared receiving unit, a signal conversion unit and an infrared transmitting unit, wherein the infrared receiving unit is connected with the infrared transmitting unit through the signal conversion unit, and is used for receiving an infrared remote control signal transmitted by a remote controller, converting the infrared remote control signal into a level signal and outputting the level signal to the signal conversion unit; the signal conversion unit is used for converting the level signal into a control signal and sending the control signal to the infrared transmitting unit; the infrared transmitting unit is used for transmitting a corresponding infrared signal according to the control signal and controlling the strength of the infrared signal. When the sound box is placed at the front end of controlled equipment such as a television set to block or weaken the infrared remote control signal transmitted by the remote controller, the infrared forwarding circuit is arranged in the sound box to transfer or strengthen the infrared remote control signal, so that the remote controller is sensitive in remote control operation; moreover, the infrared forwarding circuit and sound box are quite simple in structure and relatively low in cost.
Description
Technical field
The utility model relates to infrared signal process field, relates in particular to a kind of infrared repeat circuit and sound equipment.
Background technology
At present, due to the development of technology, flat panel TV is universal gradually, the thickness of televisor is also more and more thinner, although bring more convenient and the visual enjoyment of high definition, aspect tonequality, become more and more frivolous, on the contrary be not as full simple and honest as the tonequality of CRT TV.
The general tonequality that adopts Soundbar to make up flat panel TV in prior art, Soundbar is bar-shaped acoustic device, is generally positioned over television headend.In the time that Soundbar is positioned over television headend, be easy to shelter from telepilot and be sent to the infrared remote-controlled signal of TV, the intensity of the infrared remote-controlled signal of television reception is declined, insensitive even reactionless while causing telepilot to carry out remote control to TV, make troubles to user.
Utility model content
Fundamental purpose of the present utility model is to provide a kind of infrared repeat circuit and sound equipment, the remote-control sensitivity when remote signal that is intended to improve the controlled plants such as TV is blocked.
In order to achieve the above object, the utility model proposes a kind of infrared repeat circuit, comprise infrared receiver, signal conversion unit and infrared emission unit, wherein:
Described infrared receiver is connected with described infrared emission unit through described signal conversion unit;
Described infrared receiver is for receiving the infrared remote-controlled signal of telepilot transmitting, and described infrared remote-controlled signal is converted into level signal exports described signal conversion unit to;
Described signal conversion unit is used for described level signal to be converted to control signal, and described control signal is sent to described infrared emission unit;
Described infrared emission unit is used for launching corresponding infrared signal according to described control signal, and controls the intensity of described infrared signal.
Preferably, described infrared receiver comprises infrared receiving terminal and input power, the feeder ear of described infrared receiving terminal is connected with described input power, the earth terminal ground connection of described infrared receiving terminal, the signal output part of described infrared receiving terminal is connected with described signal conversion unit, described input power is for providing the operating voltage of described infrared receiving terminal, described infrared receiving terminal is for receiving the infrared remote-controlled signal of telepilot transmitting, and described infrared remote-controlled signal is converted into level signal, export described signal conversion unit to by signal output part.
Preferably, described infrared receiver also comprises the first resistance, the second resistance, the first filter capacitor, the second filter capacitor and the 3rd filter capacitor, one end of described the first resistance is connected with described input power, the other end of described the first resistance is connected with the feeder ear of described infrared receiving terminal, and the other end of described the first resistance is also through described the first filter capacitor ground connection; One end of described the second resistance is connected with described input power, and the other end of described the second resistance is connected with the signal output part of described infrared receiving terminal; One end of described the second filter capacitor is connected with the feeder ear of described infrared receiving terminal, the other end ground connection of described the second filter capacitor; Described the 3rd one end of filter capacitor and the signal output part of described infrared receiving terminal are connected, the other end ground connection of described the 3rd filter capacitor.
Preferably, described signal conversion unit comprises the first triode, the second triode, the 3rd resistance and the 4th resistance, the base stage of described the first triode is connected with the signal output part of described infrared receiving terminal through described the 3rd resistance, the grounded emitter of described the first triode, the collector of described the first triode is connected with described input power through described the 4th resistance, the collector of described the first triode is also connected with the base stage of described the second triode, the grounded emitter of described the second triode, the collector of described the second triode is connected with described infrared emission unit.
Preferably, described the first triode and described the second triode are NPN type triode.
Preferably, described infrared emission unit comprises light emitting diode, the 5th resistance and the 6th resistance, the anode of described light emitting diode is connected with described input power, and the negative electrode of described light emitting diode is connected with the collector of described the second triode through described the 6th resistance, the 5th resistance.
The utility model also proposes a kind of sound equipment, comprises infrared repeat circuit as above.
The infrared repeat circuit of one and the sound equipment that the utility model proposes, when this sound equipment is placed in the front end of the controlled plants such as TV, when the infrared remote-controlled signal that causes telepilot to be launched is blocked or weakens, by infrared repeat circuit is set in sound equipment, utilize the infrared receiver in this infrared repeat circuit that the infrared remote-controlled signal of reception is converted into after level signal, by signal conversion unit, this level signal is converted to control signal again, infrared emission unit is launched corresponding infrared signal according to this control signal, in realizing forwarding infrared remote-controlled signal, can also strengthen the intensity of the infrared signal of last transmitting, thus, can infrared remote-controlled signal be transmitted or be strengthened, make telepilot sensitiveer to the straighforward operation of the controlled plants such as TV, and structure is very simple, cost is lower.
Brief description of the drawings
Fig. 1 is the structured flowchart of the infrared repeat circuit of the utility model preferred embodiment;
Fig. 2 is the circuit diagram of the infrared repeat circuit of the utility model preferred embodiment;
Fig. 3 is the oscillogram of 3 of A, B, the C of the infrared repeat circuit of the utility model preferred embodiment.
In order to make the technical solution of the utility model clearer, clear, be described in further detail below in conjunction with 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.
With reference to Fig. 1, Fig. 1 is the structured flowchart of the infrared repeat circuit of the utility model preferred embodiment.
The utility model preferred embodiment proposes a kind of infrared repeat circuit, comprises infrared receiver 1, signal conversion unit 2 and infrared emission unit 3, wherein: described infrared receiver 1 is connected with described infrared emission unit 3 through described signal conversion unit 2; Described infrared receiver 1 is for receiving the infrared remote-controlled signal of telepilot transmitting, and described infrared remote-controlled signal is converted into level signal exports described signal conversion unit 2 to; Described signal conversion unit 2 is for described level signal is converted to control signal, and described control signal is sent to described infrared emission unit 3; Described infrared emission unit 3 is for launching corresponding infrared signal according to described control signal, and controls the intensity of described infrared signal.
Particularly, shown in Fig. 2, above-mentioned infrared receiver 1 comprises infrared receiving terminal 11 and input power U, the feeder ear VCC of described infrared receiving terminal 11 is connected with described input power U, the earth terminal GND ground connection of described infrared receiving terminal 11, the signal output part Out of described infrared receiving terminal 11 is connected with described signal conversion unit 2, described input power U is for providing the operating voltage of described infrared receiving terminal 11, the infrared remote-controlled signal that described infrared receiving terminal 11 sends for receiving telepilot, and described infrared remote-controlled signal is converted into level signal, export described signal conversion unit 2 to by signal output part Out.
Further, above-mentioned infrared receiver 1 also comprises the first resistance R 1, the second resistance R 2, the first filter capacitor C1, the second filter capacitor C2 and the 3rd filter capacitor C3, one end of described the first resistance R 1 is connected with described input power U, the other end of described the first resistance R 1 is connected with the feeder ear VCC of described infrared receiving terminal 11, and the other end of described the first resistance R 1 is also through described the first filter capacitor C1 ground connection; One end of described the second resistance R 2 is connected with described input power U, and the other end of described the second resistance R 2 is connected with the signal output part Out of described infrared receiving terminal 11; One end of described the second filter capacitor C2 is connected with the feeder ear VCC of described infrared receiving terminal 11, the other end ground connection of described the second filter capacitor C2; One end of described the 3rd filter capacitor C3 is connected with the signal output part Out of described infrared receiving terminal 11, the other end ground connection of described the 3rd filter capacitor C3.
Above-mentioned signal conversion unit 2 comprises the first triode Q1, the second triode Q2, the 3rd resistance R 3 and the 4th resistance R 4, the base stage of described the first triode Q1 is connected with the signal output part Out of described infrared receiving terminal 11 through described the 3rd resistance R 3, the grounded emitter of described the first triode Q1, the collector of described the first triode Q1 is connected with described input power U through described the 4th resistance R 4, the collector of described the first triode Q1 is also connected with the base stage of described the second triode Q2, the grounded emitter of described the second triode Q2, the collector of described the second triode Q2 is connected with described infrared emission unit 3.Wherein, above-mentioned the first triode Q1 and described the second triode Q2 are NPN type triode.
Above-mentioned infrared emission unit 3 comprises light emitting diode D, the 5th resistance R 5 and the 6th resistance R 6, the anode of described light emitting diode D is connected with described input power U, and the negative electrode of described light emitting diode D is connected with the collector of described the second triode Q2 through described the 6th resistance R 6, the 5th resistance R 5.
The principle of work of the infrared repeat circuit of the utility model preferred embodiment specifically describes as follows:
In the time that user presses the button on telepilot, telepilot is transmitting infrared remote-controlled signal outwards, infrared receiving terminal 11 monitors after the infrared remote-controlled signal of telepilot transmitting, the infrared remote-controlled signal of reception is converted into corresponding electric signal, waveform a is infrared receiving terminal 11 and receives after infrared remote-controlled signal as shown in Figure 3, the electric signal waveform of conversion.It should be noted that, the infrared receiving terminal 11 in the present embodiment, the infrared remote-controlled signal of only telepilot being launched receives, photoelectric conversion, does not decode.Wherein, input power U is preferably the direct supply of 3.3V, input power U provides operating voltage for infrared receiving terminal 11, the first filter capacitor C1, the second filter capacitor C2 are for the clutter of filtering circuit, further, input power U connects the signal output part Out of infrared receiving terminal 11 through pull-up resistor R2, in the waveform that has ensured to export after infrared receiving terminal 11 photoelectric conversions, the maximal value of high level is 3.3V, and the 3rd filter capacitor C3 is for the noise signal of the electric signal waveform of filtering output.
As shown in Figure 2, the signal output part Out's of setting infrared receiving terminal 11 is some A point, and the collector of setting the first triode Q1 is some B point, and any is C point for the collector of setting the second triode Q2.When the signal output part Out output high level of infrared receiving terminal 11 is that A point is while being high level, the first triode Q1 conducting, input power U is through the 4th resistance R 4, the first triode Q1 and ground conducting, B point is low level, the second triode Q2 cut-off, and C point is high level, because light emitting diode D anode is connected with input power U, light emitting diode D negative electrode and positive electrode is high level, and light emitting diode D cut-off is not luminous.
When the signal output part Out of infrared receiving terminal 11 output low level is while being A point for low level, the first triode Q1 cut-off, input power U cannot be through the 4th resistance R 4, the first triode Q1 and ground conducting, and B point is high level, the second triode Q2 conducting, input power U is through light emitting diode D, the 6th resistance R 6, the 5th resistance R 5 and the second triode Q2 and ground conducting, C point becomes low level, meanwhile, and light emitting diode D forward conduction, in luminance, outwards launch infrared signal.Further, because input power U magnitude of voltage is fixing 3.3V, therefore, by regulating the 6th resistance R 6, the resistance size of the 5th resistance R 5 is the size of current of the adjustable light emitting diode D that flows through, also regulate the intensity of the infrared signal of light emitting diode D transmitting, the resistance of the 6th resistance R 6 and the 5th resistance R 5 is larger, the intensity of the infrared signal of light emitting diode D transmitting is lower, the resistance of the 6th resistance R 6 and the 5th resistance R 5 is less, the intensity of the infrared signal of light emitting diode D transmitting is higher, therefore, by reasonably selecting the 6th resistance R 6, the resistance of the 5th resistance R 5, the intensity that can control the infrared signal of light emitting diode D transmitting is greater than the intensity of the infrared remote-controlled signal that infrared receiving terminal 11 receives, realize the reinforcement of signal.
Waveform b, c as shown in Figure 3, waveform b is the low and high level waveform that B is ordered, waveform c is the low and high level waveform that C is ordered, from above-mentioned analysis and Fig. 3, electric signal waveform after the low and high level waveform that C is ordered and infrared receiving terminal 11 transform the infrared remote-controlled signal receiving is in full accord, the low and high level that infrared emission unit 3 is ordered according to C is controlled the infrared signal of light emitting diode D transmitting, can keep synchronizeing with the infrared remote-controlled signal of telepilot transmitting, can realize transmission and the forwarding of the infrared remote-controlled signal of telepilot transmitting.
Thus, infrared receiving terminal 11 is converted into the infrared remote-controlled signal of reception after level signal, by signal conversion unit 2, this level signal is converted to control signal again, infrared emission unit 3 is launched corresponding infrared signal according to this control signal, also can strengthen the intensity of described infrared signal, in realizing forwarding infrared remote-controlled signal, can also strengthen the intensity of the infrared signal of last transmitting, in the time that the infrared remote-controlled signal of telepilot transmitting is blocked or weakens, can infrared remote-controlled signal be transmitted or be strengthened, make the straighforward operation of telepilot sensitiveer, and structure is very simple, cost is lower.
The utility model also proposes a kind of sound equipment, and this sound equipment comprises above-mentioned infrared repeat circuit, and its principle of work is described above, does not repeat them here.In the time that this sound equipment is placed in the front end of the controlled plants such as TV, easily cause the infrared remote-controlled signal of telepilot transmitting be blocked or weaken, as conventional bar-shaped acoustic device Soundbar, general and flat panel TV supports the use, for making up the tonequality of flat panel TV, in the time that existing Soundbar is positioned over television headend, be easy to shelter from telepilot and be sent to the infrared remote-controlled signal of TV, the intensity of the infrared remote-controlled signal of television reception is declined, insensitive even reactionless while causing telepilot to carry out remote control to TV, adopt after above-mentioned infrared repeat circuit, can receive at Soundbar the infrared remote-controlled signal of telepilot transmitting towards the one side of telepilot, the infrared remote-controlled signal of reception is converted into level signal, by signal conversion unit, this level signal is converted to control signal again, infrared emission unit is launched corresponding infrared signal at Soundbar towards the one side of TV according to this control signal, telepilot can carry out remote control to TV by this infrared signal, in realizing forwarding infrared remote-controlled signal, can also strengthen the intensity of the infrared signal of last transmitting, in the time that the infrared remote-controlled signal of telepilot transmitting is blocked or weakens, can infrared remote-controlled signal be transmitted or be strengthened, make the straighforward operation of telepilot sensitiveer, and structure is very simple, cost is lower.Further, because infrared repeat circuit comprises the input power U of a 3.3V, therefore, no matter in running order the or holding state of Soundbar, all can transmit or strengthen infrared remote-controlled signal, convenient, practical.
Above-mentioned infrared repeat circuit and sound equipment, when this sound equipment is placed in the front end of the controlled plants such as TV, when the infrared remote-controlled signal that causes telepilot to be launched is blocked or weakens, by infrared repeat circuit is set in sound equipment, utilize the infrared receiver in this infrared repeat circuit that the infrared remote-controlled signal of reception is converted into after level signal, by signal conversion unit, this level signal is converted to control signal again, infrared emission unit is launched corresponding infrared signal according to this control signal, in realizing forwarding infrared remote-controlled signal, can also strengthen the intensity of the infrared signal of last transmitting, thus, can infrared remote-controlled signal be transmitted or be strengthened, make telepilot sensitiveer to the straighforward operation of the controlled plants such as TV, and structure is very simple, cost is lower.
The foregoing is 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 flow process conversion that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. an infrared repeat circuit, is characterized in that, comprises infrared receiver, signal conversion unit and infrared emission unit, wherein:
Described infrared receiver is connected with described infrared emission unit through described signal conversion unit;
Described infrared receiver is for receiving the infrared remote-controlled signal of telepilot transmitting, and described infrared remote-controlled signal is converted into level signal exports described signal conversion unit to;
Described signal conversion unit is used for described level signal to be converted to control signal, and described control signal is sent to described infrared emission unit;
Described infrared emission unit is used for launching corresponding infrared signal according to described control signal, and controls the intensity of described infrared signal.
2. infrared repeat circuit according to claim 1, it is characterized in that, described infrared receiver comprises infrared receiving terminal and input power, the feeder ear of described infrared receiving terminal is connected with described input power, the earth terminal ground connection of described infrared receiving terminal, the signal output part of described infrared receiving terminal is connected with described signal conversion unit; Described input power is for providing the operating voltage of described infrared receiving terminal, described infrared receiving terminal is for receiving the infrared remote-controlled signal of telepilot transmitting, and described infrared remote-controlled signal is converted into level signal, export described signal conversion unit to by signal output part.
3. infrared repeat circuit according to claim 2, it is characterized in that, described infrared receiver also comprises the first resistance, the second resistance, the first filter capacitor, the second filter capacitor and the 3rd filter capacitor, one end of described the first resistance is connected with described input power, the other end of described the first resistance is connected with the feeder ear of described infrared receiving terminal, and the other end of described the first resistance is also through described the first filter capacitor ground connection; One end of described the second resistance is connected with described input power, and the other end of described the second resistance is connected with the signal output part of described infrared receiving terminal; One end of described the second filter capacitor is connected with the feeder ear of described infrared receiving terminal, the other end ground connection of described the second filter capacitor; Described the 3rd one end of filter capacitor and the signal output part of described infrared receiving terminal are connected, the other end ground connection of described the 3rd filter capacitor.
4. according to the infrared repeat circuit described in claim 2 or 3, it is characterized in that, described signal conversion unit comprises the first triode, the second triode, the 3rd resistance and the 4th resistance, the base stage of described the first triode is connected with the signal output part of described infrared receiving terminal through described the 3rd resistance, the grounded emitter of described the first triode, the collector of described the first triode is connected with described input power through described the 4th resistance, the collector of described the first triode is also connected with the base stage of described the second triode, the grounded emitter of described the second triode, the collector of described the second triode is connected with described infrared emission unit.
5. infrared repeat circuit according to claim 4, is characterized in that, described the first triode and described the second triode are NPN type triode.
6. infrared repeat circuit according to claim 5, it is characterized in that, described infrared emission unit comprises light emitting diode, the 5th resistance and the 6th resistance, the anode of described light emitting diode is connected with described input power, and the negative electrode of described light emitting diode is connected with the collector of described the second triode through described the 6th resistance, the 5th resistance.
7. a sound equipment, is characterized in that, comprises the infrared repeat circuit described in any one in claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870377.3U CN203733295U (en) | 2013-12-25 | 2013-12-25 | Infrared forwarding circuit and sound box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870377.3U CN203733295U (en) | 2013-12-25 | 2013-12-25 | Infrared forwarding circuit and sound box |
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|---|---|
| CN203733295U true CN203733295U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320870377.3U Expired - Fee Related CN203733295U (en) | 2013-12-25 | 2013-12-25 | Infrared forwarding circuit and sound box |
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| CN (1) | CN203733295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749160A (en) * | 2017-11-27 | 2018-03-02 | 深圳市康冠技术有限公司 | A kind of infrared signal repeat circuit |
| CN111343491A (en) * | 2020-04-26 | 2020-06-26 | 中山市悦辰电子实业有限公司 | Remote control intermediate transfer control circuit |
| CN114333283A (en) * | 2021-12-18 | 2022-04-12 | 珠海格力电器股份有限公司 | Household appliance and control method, circuit and storage medium thereof |
-
2013
- 2013-12-25 CN CN201320870377.3U patent/CN203733295U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749160A (en) * | 2017-11-27 | 2018-03-02 | 深圳市康冠技术有限公司 | A kind of infrared signal repeat circuit |
| CN111343491A (en) * | 2020-04-26 | 2020-06-26 | 中山市悦辰电子实业有限公司 | Remote control intermediate transfer control circuit |
| CN114333283A (en) * | 2021-12-18 | 2022-04-12 | 珠海格力电器股份有限公司 | Household appliance and control method, circuit and storage medium thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20201225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |