CN202772864U - Key and indicator light control circuit, and television - Google Patents
Key and indicator light control circuit, and television Download PDFInfo
- Publication number
- CN202772864U CN202772864U CN201220437812.9U CN201220437812U CN202772864U CN 202772864 U CN202772864 U CN 202772864U CN 201220437812 U CN201220437812 U CN 201220437812U CN 202772864 U CN202772864 U CN 202772864U
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- button
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- resistance
- indicator light
- electronic circuit
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Abstract
The utility model discloses a key and indicator light control circuit, and a television having the key and indicator light control circuit. The key and indicator light control circuit comprises a control chip, a key sub-circuit, an indicator light sub-circuit and a multiplex control sub-circuit. The key sub-circuit and the indicator light sub-circuit both are connected with the multiplex control sub-circuit. The multiplex control sub-circuit is further connected with the key signal receiving end and the indicator light control end of the control chip separately so as to control the transmission of key signals and indicator light signals. According to the utility model, the size of the control circuit board is reduced.
Description
Technical field
The utility model relates to technical field of television sets, particularly a kind of button and indicating lamp control circuit and television set.
Background technology
The most electric equipment is in order to reduce the volume of itself, button electronic circuit and indicator light electronic circuit independently need to be arranged on the control circuit board, wherein the button electronic circuit is connected by the key information receiving terminal of the control chip on the first transmission control electronic circuit and the main circuit board, and the indicator light electronic circuit transmits by second to be controlled electronic circuit and be connected with the indicator light control end of described control chip.Owing to adopting two transmission control electronic circuits that control chip is connected with the indicator light electronic circuit with the button electronic circuit respectively, therefore cause the volume of main circuit board and control circuit board larger, be unfavorable for the design of the miniaturization of electric equipment own.
The utility model content
Main purpose of the present utility model is to provide a kind of button and indicating lamp control circuit, is intended to reduce the volume of main circuit board and control circuit board.
To achieve these goals, the utility model provides a kind of button and indicating lamp control circuit, this button and indicating lamp control circuit comprise the multiplexing control electronic circuit of the transmission of control chip, button electronic circuit, indicator light electronic circuit and control push button signalling and indicator light signal, described button electronic circuit and indicator light electronic circuit all are connected with described multiplexing control electronic circuit, and described multiplexing control electronic circuit also is connected with the indicator light control end with the push button signalling receiving terminal of described control chip respectively.
Preferably, described multiplexing control electronic circuit comprises and is arranged on the first resistance on the main circuit board, the second resistance and main gang socket, and be arranged on control connection socket on the control circuit board, during use, this control connection socket and main gang socket connect one to one; Wherein the signal transmission ends of main gang socket is connected with described push button signalling receiving terminal, also is connected with input power, is connected with described indicator light control end by described the second resistance by described the first resistance; The signal transmission ends of control connection socket is connected with the indicator light electronic circuit with described button electronic circuit respectively.
Preferably, described button electronic circuit comprises button and a plurality of three resistance corresponding with button, and after each described the 3rd resistance was connected mutually, an end connected input power, and the other end connects the common ground end; The junction of two adjacent described the 3rd resistance and described the 3rd resistance are connected with the push button signalling receiving terminal of control chip by button respectively with the junction of common ground end.
Preferably, described indicator light electronic circuit comprises triode, the 4th resistance, the 5th resistance and indicator light; Wherein the base stage of triode is connected with the push button signalling receiving terminal of described control chip by the 4th resistance, and emitter is connected with input power, and collector electrode is connected with an end of indicator light by the 5th resistance, and the other end of this indicator light is connected with the common ground end.
Preferably, described the 4th resistance and the ratio of the 3rd resistance that is connected with input power are greater than 20.
Preferably, the ratio interval of described the first resistance and the second resistance is 0.28 to 1.55.
The utility model also provides a kind of television set, this television set comprises button and indicating lamp control circuit, this button and indicating lamp control circuit comprise control chip, button electronic circuit, indicator light electronic circuit and multiplexing control electronic circuit, described button electronic circuit and indicator light electronic circuit all are connected with described multiplexing control electronic circuit, described multiplexing control electronic circuit also is connected with the indicator light control end with the push button signalling receiving terminal of described control chip respectively, with the transmission of control push button signalling and indicator light signal.
The utility model transmits by signal transmission and the signal between indicator light control end and the indicator light electronic circuit that adopts a multiplexing control electronic circuit to finish respectively between push button signalling receiving terminal and the button electronic circuit, adopt two transmission control electronic circuits to realize the transmission of control push button signalling and indicator light signal with respect to prior art, can effectively reduce the volume of main circuit board and control circuit board, thereby more be conducive to the Miniaturization Design of electric equipment.
Description of drawings
Fig. 1 is the structural representation of the utility model button and indicating lamp control circuit preferred embodiment;
Fig. 2 is the electrical block diagram of the utility model button and indicating lamp control circuit preferred embodiment.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See figures.1.and.2, Fig. 1 is the structural representation of the utility model button and indicating lamp control circuit preferred embodiment, and Fig. 2 is the electrical block diagram of the utility model button and indicating lamp control circuit preferred embodiment.The button that the present embodiment provides and indicating lamp control circuit comprise control chip 10, button electronic circuit 20, indicator light electronic circuit 30 and multiplexing control electronic circuit 40, wherein button electronic circuit 20 is connected with the indicator light electronic circuit and all is connected with described multiplexing control electronic circuit 40, this multiplexing control electronic circuit 40 also is connected with indicator light control end P11 with the push button signalling receiving terminal P10 of control chip 10 respectively, with the transmission of control push button signalling and indicator light signal.
In the present embodiment, when the button in the button electronic circuit 20 is pressed, push button signalling will transfer to by multiplexing control electronic circuit 40 the push button signalling receiving terminal P10 of control chip 10, and control chip 10 will be carried out corresponding operation according to this button control signal; When electric equipment enters holding state, pass through indicator light control end P11 output indicator control signal by control chip 10, and transferring to indicator light electronic circuit 30 by multiplexing control electronic circuit 40, indicator light electronic circuit 30 is according to the state of this indicator light control signal reaction.
The utility model transmits by signal transmission and the signal between indicator light control end P11 and the indicator light electronic circuit 30 that adopts a multiplexing control electronic circuit 40 to finish respectively between push button signalling receiving terminal P10 and the button electronic circuit 20, adopt two transmission control electronic circuits to realize the transmission of control push button signalling and indicator light signal with respect to prior art, can effectively reduce the volume of main circuit board 1 and control circuit board 2, thereby more be conducive to the Miniaturization Design of electric equipment.
Particularly, above-mentioned multiplexing control electronic circuit 40 comprises the first resistance R 1, the second resistance R 2 and the main gang socket 50 that is arranged on the main circuit board 1, and be arranged on control connection socket 60 on the control circuit board 2, during use, this control connection socket 60 connects one to one with main gang socket 50.Wherein the signal transmission ends of main gang socket 50 is connected with push button signalling receiving terminal P10, also is connected with input power VCC, is connected with indicator light control end P11 by described the second resistance R 2 by described the first resistance R 1; The signal transmission ends of control connection socket 60 is connected with the indicator light electronic circuit with button electronic circuit 20 respectively and is connected.
When the button that uses the present embodiment and indicating lamp control circuit, main gang socket 50 on the above-mentioned main circuit board 1 and the control connection socket on the control circuit board 2 60 connect one to one by connecting line, the signal transmission ends of main gang socket 50 and the signal transmission ends of control connection socket 60 are connected, and access input power VCC and common ground end GND get final product.
The signal transmission ends that should be noted that control connection socket 60 in the present embodiment is connected with the indicator light control line that the button control line of button electronic circuit 20 is connected with the indicator light electronic circuit respectively.
Under open state, export a high level by the indicator light control end P11 of control chip 10, thereby so that button control line and indicator light control line are high level.When existing button to press, the magnitude of voltage that this button is corresponding drags down the voltage of button control line and indicator light control line simultaneously, thereby indicator light is lighted, and the signal transmission ends of the signal transmission ends by main gang socket 50 and control connection socket 60 transfers to the push button signalling receiving terminal P10 of control chip 10, judge the current button of pressing by control chip 10 according to button control line and the current magnitude of voltage analysis of indicator light control line, and carry out corresponding function.
Under holding state (situation that does not exist above-mentioned button to be pressed under this state), indicator light control end P11 by control chip 10 exports a low level, thereby so that the voltage on button control line and the indicator light control line is the voltage of supply voltage after through the first resistance R 1 and the second resistance R 2 dividing potential drops, and then so that the indicator light Chang Liang in the indicator light electronic circuit 30, to show that the current state of electronic equipment is as holding state.
The utility model all is connected with signal transmission ends in the control connection socket 60 by indicator light control line that the button control line of button electronic circuit 20 is connected with the indicator light electronic circuit, and is connected with control chip 10 through the signal transmission ends in the main gang socket 50, owing to the communication between communication and button electronic circuit 20 and the control chip 10 between button electronic circuit 20 and the control chip 10 is all adopted same signal transmission ends to carry out signal to transmit.Therefore, the button that the utility model provides and indicating lamp control circuit can reduce the quantity of the link of main gang socket 50 and control connection socket 60, thereby effectively reduce the cost of socket; Reduce simultaneously the wire rod cost of connecting line between main gang socket 50 and the control connection socket 60.In addition, because the quantity of the link of main gang socket 50 and control connection socket 60 reduces, can effectively reduce the volume of main gang socket 50 and control connection socket 60, thereby effectively reduce the volume of main circuit board 1 and control circuit board 2.
Particularly, above-mentioned button electronic circuit 20 comprises button and a plurality of three resistance R 3 corresponding with button, and after each the 3rd resistance R 3 was connected mutually, an end connected input power VCC, and the other end connects common ground end GND; The junction of two adjacent described the 3rd resistance R 3 and the 3rd resistance R 3 are connected with the push button signalling receiving terminal P10 of control chip 10 by button respectively with the junction of common ground end GND.
Above-mentioned indicator light electronic circuit 30 comprises that triode Q, the 4th resistance R 4, the 5th resistance R 5 and light-emitting diode D(are the indicator light in the present embodiment); Wherein the base stage B of triode Q is connected with the push button signalling receiving terminal P10 of control chip 10 by the 4th resistance R 4, emitter E is connected with input power VCC, collector electrode C is by the anodic bonding of the 5th resistance R 5 with light-emitting diode D, and the negative electrode of this light-emitting diode D is connected with common ground end GND.
In the present embodiment, under open state, export a high level by the indicator light control end P11 of control chip 10, the base stage B of triode Q is connected with input power VCC by the first resistance R 1, thereby so that triode Q ends, light-emitting diode D is in the state that often goes out.In Fig. 2, when existing button key to press, will drag down by the voltage of button electronic circuit 20 with the base stage B of triode Q, thereby so that light-emitting diode D is lighted in triode Q conducting, press with reminding user button this moment; After button key is released, light-emitting diode will return to the state that often goes out.Whether whether the utility model is pressed by the operating state reaction button of light-emitting diode D by indicator light electronic circuit 30 and button electronic circuit 20 are associated together, successful, therefore, more user-friendly with the reminding user operation.
Further, the ratio of above-mentioned the 4th resistance R 4 and the 3rd resistance R 3 that is connected with input power VCC is greater than 20.In the present embodiment, because the resistance value of the 4th resistance R 4 is set to greater than 20 times of the resistances of the 3rd resistance R 3, therefore can reduce indicator light electronic circuit 30 to the impact of the corresponding magnitude of voltage of any button in the button electronic circuit 20, thereby improve the practicality of button and indicating lamp control circuit.
Further, the ratio interval of above-mentioned the first resistance R 1 and the second resistance R 2 is 0.28 to 1.55.
For example the button in the present embodiment and indicating lamp control circuit are applied in the television set, the holding state of television set only responds power supply, " program adds " and " program subtracts " button of television set, and the power supply of television set, the corresponding button magnitude of voltage of " program adds " and " program subtracts " button are traditionally arranged to be less than 1V.In the present embodiment, with the ratio setting of the first resistance R 1 and the second resistance R 2 less than 1.55, under holding state, and when pressing without button, the magnitude of voltage corresponding to push button signalling receiving terminal P10 of control chip 10 is about 1.3V, therefore avoided the impact on power supply, " program adds " and " program subtracts " button.Simultaneously with the ratio setting of the first resistance R 1 and the second resistance R 2 greater than 0.28, under holding state, and when pressing without button, the magnitude of voltage corresponding to push button signalling receiving terminal P10 of control chip 10 is about 2.5V, therefore can guarantee triode Q conducting, finally make indicator light (being light-emitting diode D) keep Chang Liang.
The utility model also provides a kind of television set, and this television set comprises button and indicating lamp control circuit, and the structure of this button and indicating lamp control circuit and principle can with reference to aforementioned, not repeat them here.Owing to having adopted aforementioned keys and indicating lamp control circuit, therefore reduce the quantity of the first link and the second link, thereby reduced the volume of control circuit board, reduce simultaneously the cost of wire rod, and then be beneficial to the design of television set miniaturization.
It below only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (7)
1. a button and indicating lamp control circuit, it is characterized in that, the multiplexing control electronic circuit that comprises the transmission of control chip, button electronic circuit, indicator light electronic circuit and control push button signalling and indicator light signal, described button electronic circuit and indicator light electronic circuit all are connected with described multiplexing control electronic circuit, and described multiplexing control electronic circuit also is connected with the indicator light control end with the push button signalling receiving terminal of described control chip respectively.
2. button as claimed in claim 1 and indicating lamp control circuit, it is characterized in that, described multiplexing control electronic circuit comprises and is arranged on the first resistance on the main circuit board, the second resistance and main gang socket, and be arranged on control connection socket on the control circuit board, during use, this control connection socket and main gang socket connect one to one; Wherein the signal transmission ends of main gang socket is connected with described push button signalling receiving terminal, also is connected with input power, is connected with described indicator light control end by the second resistance by the first resistance; The signal transmission ends of control connection socket is connected with the indicator light electronic circuit with described button electronic circuit respectively.
3. button as claimed in claim 2 and indicating lamp control circuit, it is characterized in that, described button electronic circuit comprises button and a plurality of three resistance corresponding with button, after each the 3rd resistance is connected mutually, one end connects input power, and the other end connects the common ground end; The junction of two the 3rd adjacent resistance and the 3rd resistance are connected with the push button signalling receiving terminal of control chip by button respectively with the junction of common ground end.
4. button as claimed in claim 2 and indicating lamp control circuit is characterized in that, described indicator light electronic circuit comprises triode, the 4th resistance, the 5th resistance and indicator light; Wherein the base stage of triode is connected with the push button signalling receiving terminal of described control chip by the 4th resistance, and emitter is connected with input power, and collector electrode is connected with an end of indicator light by the 5th resistance, and the other end of this indicator light is connected with the common ground end.
5. button as claimed in claim 4 and indicating lamp control circuit is characterized in that, the ratio of described the 4th resistance and the 3rd resistance that is connected with input power is greater than 20.
6. such as each described button and indicating lamp control circuit in the claim 1 to 5, it is characterized in that, the ratio interval of described the first resistance and the second resistance is 0.28 to 1.55.
7. a television set is characterized in that, comprises such as each described button and indicating lamp control circuit in the claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220437812.9U CN202772864U (en) | 2012-08-30 | 2012-08-30 | Key and indicator light control circuit, and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220437812.9U CN202772864U (en) | 2012-08-30 | 2012-08-30 | Key and indicator light control circuit, and television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772864U true CN202772864U (en) | 2013-03-06 |
Family
ID=47779405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220437812.9U Expired - Lifetime CN202772864U (en) | 2012-08-30 | 2012-08-30 | Key and indicator light control circuit, and television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772864U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072762A (en) * | 2015-08-13 | 2015-11-18 | 青岛海信电器股份有限公司 | Dual-color indication lamp control circuit and electronic equipment |
| CN106683604A (en) * | 2017-03-22 | 2017-05-17 | 佛山市顺德区携创电机制造有限公司 | LED display and key detection multiplexing circuit |
| CN109688656A (en) * | 2018-11-28 | 2019-04-26 | 珠海市杰理科技股份有限公司 | Key time multiplexing circuit and chip circuit |
-
2012
- 2012-08-30 CN CN201220437812.9U patent/CN202772864U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105072762A (en) * | 2015-08-13 | 2015-11-18 | 青岛海信电器股份有限公司 | Dual-color indication lamp control circuit and electronic equipment |
| CN105072762B (en) * | 2015-08-13 | 2018-11-27 | 青岛海信电器股份有限公司 | A kind of control circuit and electronic equipment of bi-colour LED |
| CN109041384A (en) * | 2015-08-13 | 2018-12-18 | 青岛海信电器股份有限公司 | A kind of control circuit and electronic equipment of bi-colour LED |
| CN109041384B (en) * | 2015-08-13 | 2019-12-27 | 青岛海信电器股份有限公司 | Control circuit of double-color indicator lamp and electronic equipment |
| CN106683604A (en) * | 2017-03-22 | 2017-05-17 | 佛山市顺德区携创电机制造有限公司 | LED display and key detection multiplexing circuit |
| CN106683604B (en) * | 2017-03-22 | 2020-07-21 | 广东携创电机有限公司 | Multiplexing processing circuit for L ED display and key detection |
| CN109688656A (en) * | 2018-11-28 | 2019-04-26 | 珠海市杰理科技股份有限公司 | Key time multiplexing circuit and chip circuit |
| CN109688656B (en) * | 2018-11-28 | 2021-03-19 | 珠海市杰理科技股份有限公司 | Key time division multiplexing circuit and chip circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
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| CX01 | Expiry of patent term |