CN201869299U - Standby control circuit and television - Google Patents
Standby control circuit and television Download PDFInfo
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- CN201869299U CN201869299U CN2010205775668U CN201020577566U CN201869299U CN 201869299 U CN201869299 U CN 201869299U CN 2010205775668 U CN2010205775668 U CN 2010205775668U CN 201020577566 U CN201020577566 U CN 201020577566U CN 201869299 U CN201869299 U CN 201869299U
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- switching tube
- chip microcomputer
- control circuit
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Abstract
The utility model provides a standby control circuit and a television, belonging to the electronic field. The standby control circuit comprises a switching tube Q1, a diode D1, a switching tube Q2, wherein the source of the switching tube Q1 is connected with a power supply, the drain of the switching tube Q1 is used as a power supply output end and is connected with the power supply input end of a single-chip microcomputer and the power supply input end of a switching module, the cathode of the diode D1 is used as a signal input end and is connected with the output end of a remote control head, the anode of the diode D1 is connected with the grid of the switching tube Q1 through a current limiting resistor R2 and is connected with the source of the switching tube Q1 through a pull-up resistor R1, the collector of the switching tube Q2 is connected with the anode of the diode D1, the emitter of the switching tube Q2 is grounded, the base of the switching tube Q2 is connected to the signal control end of the single-chip microcomputer through a current limiting resistor R4, and the end of the current limiting resistor R4 which is connected with the single-chip microcomputer is grounded through a pull-down resistor R3. By using the standby control circuit, when an electrical appliance is in a standby state, only the remote control head and several discrete components of the standby control circuit work, and therefore the standby power consumption of the electrical appliance is greatly reduced.
Description
Technical field
The utility model belongs to electronic applications, relates in particular to a kind of readiness control circuit and television set.
Background technology
Show that according to investigation the standby energy consumption of consumer electronics product has accounted for about 10% of family's electricity consumption at present, has caused very big energy waste, therefore reduce standby energy consumption and become the focus that industry is paid close attention to always.Present stage, reduce the common employing of standby energy consumption host computer system when standby and close peripheral circuit, keep the operation of kernel system, perhaps in system, add single-chip microcomputer, during standby main frame is cut off the power supply fully, only keep single-chip microcomputer and remote control head and move remote signal is received the decode, as Opportunity awaiting control for linear.But, the operation of kernel and single-chip microcomputer can consume certain power equally, to really accomplish to reduce stand-by power consumption, main system and single-chip microcomputer need be cut off the power supply fully, yet can't decode and control the signal that the remote control head receives after main system and single-chip microcomputer all cut off the power supply.
The utility model content
The purpose of this utility model is to provide a kind of readiness control circuit and television set, is intended to solve the big problem of standby energy consumption in the existing standby system.
The utility model is achieved in that a kind of readiness control circuit, and described readiness control circuit comprises:
Switching tube Q1, its source class connects power supply, and its drain electrode connects the power supply input of single-chip microcomputer and the power supply input of switch module as the power supply output;
Diode D1, its negative electrode connects the output of remote control head as signal input part, and its anode connects the grid of described switching tube Q1 by current-limiting resistance R2, connects the source class of described switching tube Q1 simultaneously by pull-up resistor R1;
Switching tube Q2, its collector electrode connects the anode of diode D1, its grounded emitter, its base stage is connected to the signal controlling end of single-chip microcomputer by current-limiting resistance R4, and the end that described current-limiting resistance R4 is connected with single-chip microcomputer passes through pull down resistor R3 ground connection.
Further, described switching tube Q1 is the PMOS pipe.
Further, described switching tube Q2 is a NPN type triode.
Further, described circuit also comprises current-limiting resistance R5, and described current-limiting resistance R5 one end connects a remote control output, and the other end connects the signal input part of single-chip microcomputer and the signal input part of main system.
Another purpose of the present utility model is to provide a kind of television set that adopts above-mentioned readiness control circuit.
In the utility model, two extremely low switching tubes of power are connected with single-chip microcomputer, only when remote signal was imported, the switching tube conducting started single-chip microcomputer and judges whether to carry out boot program.When standby, replace single-chip microcomputer and main system to carry out standby signal by the readiness control circuit that comprises switching tube and detect, this readiness control circuit element is few, low in energy consumption, and circuit structure is simple, realizes easily, has not only reduced stand-by power consumption, has also reduced cost of manufacture.
Description of drawings
The readiness control circuit figure that Fig. 1 provides for the utility model embodiment;
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the utility model, two extremely low switching tubes of power are connected with single-chip microcomputer, only when remote signal was imported, the switching tube conducting started single-chip microcomputer and judges whether to carry out boot program.When standby, replace single-chip microcomputer and main system to carry out standby signal by the readiness control circuit that comprises switching tube and detect, solved consumer electronics series products stand-by power consumption height, readiness control circuit complexity, the problem that cost is high.
Fig. 1 shows the readiness control circuit that the utility model embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model.
In the utility model embodiment, readiness control circuit 1 comprises: switching tube Q1, and its source class connects the 5V_STB voltage end of power supply 5, and its drain electrode connects the power supply input 33 of single-chip microcomputer 3 and the power supply input 41 of switch module 4 as the power supply output; Diode D1, its negative electrode connects the output of remote control 2 as signal input part, and its anode connects the grid of described switching tube Q1 by current-limiting resistance R2, connects the source class of described switching tube Q1 simultaneously by pull-up resistor R1; Switching tube Q2, its collector electrode connects the anode of diode D1, its grounded emitter, and its base stage is connected to the signal controlling end 32 of single-chip microcomputer 3 by current-limiting resistance R4, described current-limiting resistance R4 one end connects the base stage of described switching tube Q2, and the other end is by pull down resistor R3 ground connection.
As an embodiment of the present utility model, switching tube Q1 is the PMOS pipe; Switching tube Q2 is a NPN type triode.
As a preferred embodiment of the present utility model, the output 34 of single-chip microcomputer 3 with receive power-on command after start the switch module 4 of main system 6 input 42 be connected, the output 43 of switch module 4 connects the control input end 62 of main system 6, the power supply input 61 of main system 6 connects the 12V/24V power output end of power supplys 5, and the signal input part 63 of main system 6 connects the output of remote control 2 by current-limiting resistance R5.
Below in conjunction with specific embodiment realization of the present utility model is elaborated.
When remote control 2 does not receive remote signal, to readiness control circuit 1 output high level signal, pull-up resistor R1 provides the acquiescence high level for the control end of switching tube Q1, diode D1 and switching tube Q1 close, and pull down resistor R3 provides the acquiescence low level for the control end of switching tube Q2, and switching tube Q2 closes, readiness control circuit 1 does not start any external system, whole system is in holding state, has only remote control 2 and readiness control circuit 1 work, continues to wait for to receive remote signal.
When remote control 2 receives remote signal, to readiness control circuit 1 output low level signal, diode D1 conducting, and the grid of switching tube Q1 drawn be low level, switching tube Q1 conducting, the drain electrode output 5V_STB voltage of switching tube Q1 starts single-chip microcomputer 3 to single-chip microcomputer 3 power supplies.After single-chip microcomputer 3 starts, its signal controlling end 32 passes through current-limiting resistance R4 to the switching tube Q2 of readiness control circuit 1 input high level signal, switching tube Q2 conducting, and the grid of switching tube Q1 keeps low level, switching tube Q1 is continuously single-chip microcomputer 3 power supplies, guarantees that single-chip microcomputer 3 can correctly read remote signal.Diode D1 turn-offed in switching tube Q1 conduction period, prevented that the signals of remote control 2 output from being dragged down by switching tube Q2.
As a preferred embodiment of the present utility model, can be connected current-limiting resistance R5 with single-chip microcomputer 3 signal input parts 31 at remote control 2 output, damage single-chip microcomputer to prevent surge current.Single-chip microcomputer 3 is decoded to the remote signal of remote control 2 output by current-limiting resistance R5, and judges whether to be starting-up signal.
If not starting-up signal, the signal controlling end 32 of single-chip microcomputer 3 drags down switching tube Q2 base potential by current-limiting resistance R4, and switching tube Q2 closes, and switching tube Q1 also cuts off the power supply single-chip microcomputer 3 and closes because the grid potential rising is also closed.At this moment, whole system enters holding state, has only remote control 2 and readiness control circuit 1 work, waits for receiving remote signal once more.
If starting-up signal, single-chip microcomputer 3 inhibit signal control ends 32 are high level, readiness control circuit 1 is continuously single-chip microcomputer 3 and switch module 4 provides 5V_STB voltage, at this moment, single-chip microcomputer 3 control switch modules 4 start main system 6, and readiness control circuit 1 is switch module 4 power supplies, and power supply 5 provides 12V/24V voltage for main system 6, main system 6 enters open state, and by main system 6 by the current-limiting resistance R5 remote signal that reads and decode.
As a preferred embodiment of the present utility model, power supply 5 is only exported 5V_STB voltage when standby, when main system 6 starts, for it provides 12V/24V voltage, exports 5V_STB voltage simultaneously.
After main system 6 was decoded to off signal, control power supply 5 was closed the output of 12V/24V power supply, sends standby signal simultaneously to single-chip microcomputer 3, makes its stopcock module 4, and main system 6 outages are closed.Single-chip microcomputer 3 drags down its signal controlling end 32 current potentials, and switching tube Q2 closes, and switching tube Q1 draws high because of grid potential and closes, and single-chip microcomputer 3 outage is closed, and has only remote control 2 and readiness control circuit 1 work this moment, waits for once more receiving remote signal.
The readiness control circuit that the utility model embodiment provides can be applied in the television set of any class, any series.
In the utility model, readiness control circuit only starts single-chip microcomputer remote signal is decoded when receiving the remote signal of remote control head output, and only starting switch module and main system when remote signal is starting-up signal, make several discrete elements work of when standby, having only remote control head and readiness control circuit, greatly reduce the stand-by power consumption of electrical equipment.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. a readiness control circuit is characterized in that, described readiness control circuit comprises:
Switching tube Q1, its source class connects power supply, and its drain electrode connects the power supply input of single-chip microcomputer and the power supply input of switch module as the power supply output;
Diode D1, its negative electrode connects the output of remote control head as signal input part, and its anode connects the grid of described switching tube Q1 by current-limiting resistance R2, connects the source class of described switching tube Q1 simultaneously by pull-up resistor R1;
Switching tube Q2, its collector electrode connects the anode of diode D1, its grounded emitter, its base stage is connected to the signal controlling end of single-chip microcomputer by current-limiting resistance R4, and the end that described current-limiting resistance R4 is connected with single-chip microcomputer passes through pull down resistor R3 ground connection.
2. circuit as claimed in claim 1 is characterized in that, described switching tube Q1 is the PMOS pipe.
3. circuit as claimed in claim 1 is characterized in that, described switching tube Q2 is a NPN type triode.
4. circuit as claimed in claim 1 is characterized in that described circuit also comprises current-limiting resistance R5, and described current-limiting resistance R5 one end connects a remote control output, and the other end connects the signal input part of single-chip microcomputer and the signal input part of main system.
5. a television set is characterized in that, described television set adopts as each described readiness control circuit of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205775668U CN201869299U (en) | 2010-10-26 | 2010-10-26 | Standby control circuit and television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205775668U CN201869299U (en) | 2010-10-26 | 2010-10-26 | Standby control circuit and television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201869299U true CN201869299U (en) | 2011-06-15 |
Family
ID=44140441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205775668U Expired - Fee Related CN201869299U (en) | 2010-10-26 | 2010-10-26 | Standby control circuit and television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201869299U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998981A (en) * | 2011-09-19 | 2013-03-27 | 珠海格力电器股份有限公司 | Electric appliance and method, device and system for standby control of electric appliance |
| CN103313003A (en) * | 2013-05-09 | 2013-09-18 | 深圳创维－Rgb电子有限公司 | Standby control circuit and television set |
-
2010
- 2010-10-26 CN CN2010205775668U patent/CN201869299U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102998981A (en) * | 2011-09-19 | 2013-03-27 | 珠海格力电器股份有限公司 | Electric appliance and method, device and system for standby control of electric appliance |
| CN103313003A (en) * | 2013-05-09 | 2013-09-18 | 深圳创维－Rgb电子有限公司 | Standby control circuit and television set |
| CN103313003B (en) * | 2013-05-09 | 2016-10-12 | 深圳创维－Rgb电子有限公司 | Readiness control circuit and television set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110615 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |