CN101409965A - Circuit for controlling remote-control indicating lamp - Google Patents
Circuit for controlling remote-control indicating lamp Download PDFInfo
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- CN101409965A CN101409965A CNA2007101238178A CN200710123817A CN101409965A CN 101409965 A CN101409965 A CN 101409965A CN A2007101238178 A CNA2007101238178 A CN A2007101238178A CN 200710123817 A CN200710123817 A CN 200710123817A CN 101409965 A CN101409965 A CN 101409965A
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Abstract
The invention discloses a circuit used for controlling a remote control indicator lamp, comprising a first diode, a second diode, a third diode, a first resistance, a second resistance, a third resistance and a fourth resistance, a first triode and a second triode; wherein, the first diode and the first resistance are connected in series; furthermore, the outlet of the first diode is grounded; the other end of the first resistance is connected with the emitting electrode of the first triode; two ends of the fourth resistance are respectively connected with the collector and the base of the first triode; the second resistance is connected with the inlet of the second diode; the outlet of the second diode is grounded; the other end of the second resistance is connected with a controllable 5V power supply; the base of the first triode is connected with the collector of the second triode; the emitting electrode of the second triode is grounded; furthermore, the base of the second triode is connected with the third resistance; the third resistance is connected with the outlet of the third diode; the collector of the first triode is connected with an uncontrollable 5VStb power; the inlet of the third diode is connected with a controllable 5V power supply. The circuit can effectively save the quantity of the I/O ports and realizes the object of simple circuit.
Description
Technical field
The present invention relates to electronic applications, relate in particular to a kind of technology of controlling the LCD TV remote-control indicating lamp.
Background technology
In the prior art, for the LCD TV remote-control indicating lamp, promptly the power supply indicator on this machine of LCD TV remote control dash receiver by remote controller control, generally adopts two or the one/O mouth of MCU, control LCD TV remote-control indicating lamp change in color.As shown in Figure 1, be a kind of circuit diagram of controlling the LCD TV remote-control indicating lamp in the prior art, comprise two I/O mouths 101,102, resistance 103,104,107,108, triode 105,106, light-emitting diode 109,110, wherein, light-emitting diode 109 is a red light-emitting diode, and light-emitting diode 110 is a green light LED; I/O mouth 101 is used to control the bright dark of red light, and it is bright dark that I/O mouth 102 is used to control green light, and the resistance value of resistance 103,104 is 300 Ω, and the resistance value of resistance 107,108 is 1K Ω, and triode 105,106 is 3904 triodes.
Current collection by triode 105 very system provides the uncontrollable 5VStb power supply of normal power supply (the 5V power supply that still exists when being system standby).
Above-mentioned for adopting two or the one/O mouth of MCU, the variation of control TV remote indicator light colors.And the integrated and miniaturization along with IC at present, MCU I/O mouth quantity is very limited, and desire realizes the control to whole system, and the designer tends to run into the not enough embarrassment of I/O mouth quantity.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of circuit of controlling remote-control indicating lamp, effectively saved I/O mouth quantity, realize that circuit is simple, for the situation that the I/O mouth is not enough in system design provides new solution thinking.
A kind of circuit of controlling remote-control indicating lamp, wherein: this circuit comprises first, second, third diode, first, second, third, fourth resistance, first, second triode, wherein, first resistance is connected with the inlet of first diode, and the outlet ground connection of first diode, the emitter of another termination first triode of first resistance; The two ends of the 4th resistance connect the collector electrode and the base stage of first triode respectively; Second resistance is connected with the inlet of second diode, and the outlet ground connection of second diode, the controlled 5V power supply of another termination of second resistance; The base stage of first triode is connected with the collector electrode of second triode; The grounded emitter of second triode, and the base stage of second triode is connected with the 3rd resistance, and the 3rd resistance is connected with the outlet of the 3rd diode, and the collector electrode of first triode connects uncontrollable 5VStb power supply, and the inlet of the 3rd diode connects described controlled 5V power supply.
Described first diode is a red light emitting diodes, and described second diode is a green LED.
During system standby, the 5V power-off, described second diode is closed, and described first diode ends, the described first triode conducting, described first diode is lighted; During the system operate as normal, the 5V power initiation, described second diode is lighted, described first diode current flow, described first triode ends, and described first diode is closed.
Compared with prior art, the present invention mainly utilizes the controlled 5V of system to realize the conversion of traffic lights color, the realization circuit is simple, effectively saved I/O mouth quantity, for the I/O mouth is not enough in system design situation provides new solution thinking, use the restriction of I/O mouth when having overcome traditional realization traffic lights control.
Description of drawings
Fig. 1 is a kind of circuit diagram of controlling the LCD TV remote-control indicating lamp in the prior art;
Fig. 2 is a kind of circuit diagram of controlling remote-control indicating lamp of better embodiment of the present invention.
Embodiment
For the purpose, technical scheme, the advantage that make the present invention is clearer and more definite, clear, the present invention's technical scheme is described in further detail below in conjunction with embodiment, accompanying drawing.
As shown in Figure 2, a kind of circuit diagram of controlling remote-control indicating lamp for better embodiment of the present invention, comprise light-emitting diode 201,202 and general-purpose diode 203, resistance 204,205,206,207, triode 208,209, wherein, light-emitting diode 201 glows, light-emitting diode 202 green light, certainly, according to the actual requirements, also can send out other colors respectively.
Wherein, diode 201, resistance 204 series connection, and, the outlet ground connection of diode 201, the emitter of another termination triode 208 of resistance 204; The two ends of resistance 207 connect the collector electrode and the base stage of triode 208 respectively; Resistance 205 is connected with the inlet of diode 202, and the outlet ground connection of diode 202, the controlled 5V power supply of another termination of resistance 205; The base stage of triode 208 is connected with the collector electrode of triode 209; The grounded emitter of triode 209, and the base stage of triode 209 is connected with resistance 206, and resistance 206 is connected with the outlet of diode 203.
The collector electrode of triode 208 connects uncontrollable 5VStb power supply, for system provides the uncontrollable 5VStb power supply of normal power supply (the 5VStb power supply that still exists when being system standby); The inlet of diode 203 connects controlled 5V power supply, for system provides controlled 5V power supply (this 5V power supply will be closed when being system standby).For effectively having saved I/O mouth quantity, during system standby, controlled 5V power-off, voltage is low level on the green LED 202, and green LED 202 ends, and promptly green light cuts out; This moment, triode 209 base stages were low level, and triode 209 ends, and triode 208 base stages are high level, triode 208 conductings, and voltage is high level on the red light emitting diodes 201, red light emitting diodes 201 conductings, promptly red light is lighted.During the system operate as normal, the 5V power initiation, voltage is high level on the green LED 202, green LED 202 conductings, promptly green light is lighted; Triode 209 base stages are high level, triode 209 conductings, and triode 208 base stages are low level, and triode 208 ends, and voltage is low level on the red light emitting diodes 201, and red light emitting diodes 201 ends, and promptly red light is closed.Like this, the red green change in color of variation may command remote-control indicating lamp of the supply voltage during by system standby and operate as normal, strong operability is easy to realize.
Though the present invention is described with reference to current better embodiment; but those skilled in the art will be appreciated that; above-mentioned better embodiment only is used for illustrating the present invention; be not to be used for limiting protection scope of the present invention; any within the spirit and principles in the present invention scope; any modification of being done, equivalence replacement, improvement etc. all should be included within the scope of the present invention.
Claims (3)
1. circuit of controlling remote-control indicating lamp, it is characterized in that: this circuit comprises first, second, third diode, first, second, third, fourth resistance, first, second triode, wherein, first resistance is connected with the inlet of first diode, and the outlet ground connection of first diode, the emitter of another termination first triode of first resistance; The two ends of the 4th resistance connect the collector electrode and the base stage of first triode respectively; Second resistance is connected with the inlet of second diode, and the outlet ground connection of second diode, the controlled 5V power supply of another termination of second resistance; The base stage of first triode is connected with the collector electrode of second triode; The grounded emitter of second triode, and the base stage of second triode is connected with the 3rd resistance, and the 3rd resistance is connected with the outlet of the 3rd diode, and the collector electrode of first triode connects uncontrollable 5VStb power supply, and the inlet of the 3rd diode connects described controlled 5V power supply.
2. the circuit of control remote-control indicating lamp as claimed in claim 1 is characterized in that: described first diode is a red light emitting diodes, and described second diode is a green LED.
3. the circuit of control remote-control indicating lamp as claimed in claim 1 or 2 is characterized in that: during system standby, and the 5V power-off, described second diode is closed, and described first diode ends, the described first triode conducting, described first diode is lighted; During the system operate as normal, the 5V power initiation, described second diode is lighted, described first diode current flow, described first triode ends, and described first diode is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710123817A CN101409965B (en) | 2007-10-12 | 2007-10-12 | Circuit for controlling remote-control indicating lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710123817A CN101409965B (en) | 2007-10-12 | 2007-10-12 | Circuit for controlling remote-control indicating lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101409965A true CN101409965A (en) | 2009-04-15 |
| CN101409965B CN101409965B (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710123817A Expired - Fee Related CN101409965B (en) | 2007-10-12 | 2007-10-12 | Circuit for controlling remote-control indicating lamp |
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| Country | Link |
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| CN (1) | CN101409965B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102123543A (en) * | 2010-11-12 | 2011-07-13 | 康佳集团股份有限公司 | Indicating lamp control circuit of television and television |
| CN102573223A (en) * | 2011-12-21 | 2012-07-11 | 惠州Tcl移动通信有限公司 | Indicating lamp control circuit for electric facilities, and mobile phone |
| WO2016090573A1 (en) * | 2014-12-10 | 2016-06-16 | Thomson Licensing | Indicator circuit and apparatus using the same |
| CN113825283A (en) * | 2021-10-08 | 2021-12-21 | 深圳创维－Rgb电子有限公司 | Far-field voice visual indicator lamp control circuit, method and device and electronic product |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1492671A (en) * | 2002-10-22 | 2004-04-28 | 海尔集团公司 | TV set with state indication lamp |
| CN2715462Y (en) * | 2004-06-21 | 2005-08-03 | 海信集团有限公司 | LED indicating lamp luminance drive circuit for enhanced TV set |
| CN2747804Y (en) * | 2004-12-08 | 2005-12-21 | 海信集团有限公司 | Control circuit of dual-color LED of TV set |
| CN2824500Y (en) * | 2005-09-09 | 2006-10-04 | 海信集团有限公司 | Indicating lamp control circuit and set-top-box with same |
-
2007
- 2007-10-12 CN CN200710123817A patent/CN101409965B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102123543A (en) * | 2010-11-12 | 2011-07-13 | 康佳集团股份有限公司 | Indicating lamp control circuit of television and television |
| CN102123543B (en) * | 2010-11-12 | 2015-01-21 | 康佳集团股份有限公司 | Indicating lamp control circuit of television and television |
| CN102573223A (en) * | 2011-12-21 | 2012-07-11 | 惠州Tcl移动通信有限公司 | Indicating lamp control circuit for electric facilities, and mobile phone |
| CN102573223B (en) * | 2011-12-21 | 2014-04-09 | 惠州Tcl移动通信有限公司 | Indicating lamp control circuit for electric facilities, and mobile phone |
| WO2016090573A1 (en) * | 2014-12-10 | 2016-06-16 | Thomson Licensing | Indicator circuit and apparatus using the same |
| CN107006098A (en) * | 2014-12-10 | 2017-08-01 | 汤姆逊许可公司 | Indicator circuit and the device using the indicator circuit |
| US10477632B2 (en) | 2014-12-10 | 2019-11-12 | Interdigital Ce Patent Holdings | Indicator circuit and apparatus using the same |
| CN113825283A (en) * | 2021-10-08 | 2021-12-21 | 深圳创维－Rgb电子有限公司 | Far-field voice visual indicator lamp control circuit, method and device and electronic product |
| CN113825283B (en) * | 2021-10-08 | 2023-06-06 | 深圳创维－Rgb电子有限公司 | Far-field voice visual indicator lamp control circuit, method and device and electronic product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101409965B (en) | 2012-09-05 |
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