CN201986059U - STB and standby circuit with low power consumption thereof - Google Patents
STB and standby circuit with low power consumption thereof Download PDFInfo
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- CN201986059U CN201986059U CN2011200655096U CN201120065509U CN201986059U CN 201986059 U CN201986059 U CN 201986059U CN 2011200655096 U CN2011200655096 U CN 2011200655096U CN 201120065509 U CN201120065509 U CN 201120065509U CN 201986059 U CN201986059 U CN 201986059U
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Abstract
The utility model discloses a standby circuit with low power consumption of an STB (Set Top Box), and aims to provide a standby circuit with low power consumption. The standby circuit comprises a master chip and an output circuit connected with the master chip and controlled by the master chip, wherein the master chip is provided with a feedback pin capable of controlling the shutdown or working of the master chip per se. The standby circuit with low power consumption of the STB further comprises a control circuit for controlling the shutdown or working of the master chip and correspondingly controlling the shutdown or working of the output circuit, and the output terminal of the control circuit is connected with the feedback pin. The utility model further discloses the STB employing the standby circuit with low power consumption. The standby circuit with low power consumption is applicable to various STBs.
Description
Technical field
The utility model relates to set-top box, especially relates to a kind of low-power consumption standby circuit of set-top box.
Background technology
Existing set-top box inside is mainly by comprising following components: work mainboard, power panel, demonstration and control panel.Wherein power panel is with after the rectification of 220V civil power transformation, four groups of DC power supply 3.3V, 5V, 12V and 18V are exported in requirement according to work mainboard and demonstration and each components and parts of control panel respectively, wherein, 3.3V supply tuner and panel demonstration and control, 18V to supply low-converter for master chip, 12V for audio frequency amplification, 5V, its stand-by operation circuit as shown in Figure 3.
After the set-top box mains switch was opened generally speaking, power panel was promptly started working and is powered to mainboard and display, control panel, and set-top box begins operate as normal.Sometimes the user needs temporarily to stop to watch under the situation of normally watching and allows set-top box be in holding state, promptly use remote controller " power supply " button powered-down, in fact the switch of remote controller control is connected on the vision signal output branch road of master chip decoding output, what remote controller cut out is the vision signal output of master chip U1, as shown in Figure 4, set-top box does not just have video output, and television set has not had image to show.Only need repeat in the time of need seeing TV to get final product by remote controller " power supply " button, though set-top box seems not have signal output when this holding state, and in fact the consumption of power supply is very big, has expended electric energy in vain.
The utility model content
The utility model has in fact only been closed video output branch road in order to solve the prior art stand-by circuit, and electrical source consumption is still very big, has expended the technical problem of electric energy in vain, and a kind of set-top box low-power consumption standby circuit and set-top box thereof are provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is a kind of set-top box low-power consumption standby circuit of design, comprise a master chip and the output circuit that is connected and is subjected to described master chip control with described master chip, described master chip has the feedback pin that a may command himself is closed or worked, described set-top box low-power consumption standby circuit comprises that also one is used to control the control circuit that described master chip is closed or thereby the described output circuit of the corresponding control of work cuts out or works, and the output of described control circuit links to each other with described feedback pin.
Described control circuit also comprises:
One remote-control receiving circuit, it receives the external remote control signal and the remote signal that receives is exported;
The remote signal treatment circuit that one input is connected with the output of described remote-control receiving circuit, it receives the remote signal of described remote-control receiving circuit output and a corresponding remote control command is exported in its identification back of sampling;
One input and the signal amplification circuit that described remote signal treatment circuit output is connected, output is connected with described feedback pin, it exports the feedback pin to after receiving described remote control command and amplification.
Described master chip is the off-line type switch power controller.
Described off-line type switch power controller is ICE3B0365J, and described feedback pin is 2 pin of ICE3B0365J.
The utility model also provides a kind of set-top box with above-mentioned set-top box low-power consumption standby circuit.
The utility model is by being provided with the control circuit that the described master chip of a control is closed or worked, control closing or working of master chip by control circuit, thereby can control whole output circuit by control circuit, make when closing, all output circuits all cut off the power supply and quit work, only remaining control circuit has reduced the consumption of power supply in work, has saved electric energy.
Description of drawings
Below in conjunction with embodiment and accompanying drawing the utility model is elaborated, wherein:
Fig. 1 is the utility model low power consumpting controling circuit schematic diagram;
Fig. 2 is the utility model low power consumpting controling circuit figure;
Fig. 3 is the low-power consumption standby circuit figure of prior art set-top box;
Remote controller power cutoff schematic diagram when Fig. 4 is the prior art set-top box standby.
Embodiment
See also Fig. 1.The utility model set-top box low-power consumption standby circuit comprises control circuit, master chip and the output circuit that connects successively, wherein, control circuit is mainly used in cutting out or working of control master chip, thereby the closing or working of corresponding controlling output circuit, control circuit comprise the signal amplification circuit that remote signal treatment circuit that remote-control receiving circuit, input be connected with the output of described remote-control receiving circuit and input are connected with described remote signal treatment circuit output.Remote-control receiving circuit is mainly used in the reception remote signal, so that come manipulator top box low-power consumption standby circuit by the remote signal of remote controller, remote-control receiving circuit comprises that mainly a remote control receives head.The remote signal treatment circuit is mainly used in the remote signal that remote-control receiving circuit is received and samples, discerns back output one remote control command, and remote control command to the master chip after signal amplification circuit is mainly used in the output signal of amplifying the remote signal treatment circuit and exports this amplification is controlled master chip.
Master chip is an off-line type switch power controller, be mainly used in the break-make of controlling output circuit, described master chip has the feedback pin that a may command himself is closed or worked, and described feedback pin links to each other with the output of control circuit, promptly links to each other with the output of described signal amplification circuit.
Master chip and output circuit are prior art, and its physical circuit as shown in Figure 3.
The input of output circuit links to each other with the output of master chip, is mainly used in each road driving power of output.Output short-circuit is subjected to the control of described master chip and closes or work.
When the needs standby, can send standby command by remote controller, control circuit receives described standby command and the identification of sampling, amplify back output remote control standby and instruct to the feedback pin of master chip, close master chip, thereby thoroughly close output circuit, make complete machine other power supplies except that control circuit be in slave mode, set-top box complete machine electric power system when " standby " state is closed, and realizes the low-power consumption purpose of power saving.The utility model has remarkable power savings advantage in contrast prior art economize on electricity about 95% under the set-top box standby state.
Please in the lump referring to Fig. 2, this figure has disclosed a concrete control circuit figure.It comprises: a remote control reception U3 who is used to receive remote signal; Be used for to remote signal sample identification single-chip microcomputer U13 and peripheral circuit thereof; Be used to amplify the triode Q12 of single-chip microcomputer U13 output signal and the signal amplification circuit that triode Q13 forms.Please in the lump referring to Fig. 3, the collector electrode F of triode Q13 end is connected to the feedback pin of the master chip U1 among Fig. 3, closing or working with the control master chip.In this specific embodiment, master chip U1 is ICE3B0365J, and its feedback pin is 2 pin.
Its operation principle is: after a remote controller reception U3 receives " standby " instruction, by single-chip microcomputer U13 signal is carried out sampling processing, identification, after being confirmed to be standby command, single-chip microcomputer output high level signal, by triode Q1, triode Q2 two-stage drive triode master chip U1 the 2nd pin level is dragged down by force, force master chip U1 to be in closed condition, thereby the input of the transformer of cutting off the electricity supply (elementary) power supply, whole power panel is exported four groups of power supplys does not have power supply output, and set-top box complete machine electric power system when " standby " state is closed.Otherwise, after remote controller reception head receives " start " instruction, single-chip microcomputer output low level signal, by triode Q1, triode Q2 two-stage drive triode master chip U1 the 2nd pin level is increased, master chip U1 is in open state, thereby the input of turn-on power transformer (elementary) power supply, power transformer is exported four groups of power supplys, and set-top box is in running order.
The utility model set-top box low-power consumption standby control circuit can be used for various set-top box, to realize low-power consumption standby, can economize on electricity about 95% compared to existing technology, has significant power savings advantage.
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. set-top box low-power consumption standby circuit, comprise a master chip and the output circuit that is connected and is subjected to described master chip control with described master chip, described master chip has the feedback pin that a may command himself is closed or worked, it is characterized in that: thus described set-top box low-power consumption standby circuit comprises that also one is used to control the control circuit that described master chip is closed or the described output circuit of the corresponding control of work cuts out or works, and the output of described control circuit links to each other with described feedback pin.
2. set-top box low-power consumption standby circuit according to claim 1 is characterized in that: described control circuit also comprises:
One remote-control receiving circuit, it receives the external remote control signal and the remote signal that receives is exported;
The remote signal treatment circuit that one input is connected with the output of described remote-control receiving circuit, it receives the remote signal of described remote-control receiving circuit output and a corresponding remote control command is exported in its identification back of sampling;
One input and the signal amplification circuit that described remote signal treatment circuit output is connected, output is connected with described feedback pin, it exports the feedback pin to after receiving described remote control command and amplification.
3. set-top box low-power consumption standby circuit according to claim 1 is characterized in that: described master chip is the off-line type switch power controller.
4. set-top box low-power consumption standby circuit according to claim 3 is characterized in that: described off-line type switch power controller is ICE3B0365J, and described feedback pin is 2 pin of ICE3B0365J.
5. set-top box with each described set-top box low-power consumption standby circuit of claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200655096U CN201986059U (en) | 2011-03-14 | 2011-03-14 | STB and standby circuit with low power consumption thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200655096U CN201986059U (en) | 2011-03-14 | 2011-03-14 | STB and standby circuit with low power consumption thereof |
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| Publication Number | Publication Date |
|---|---|
| CN201986059U true CN201986059U (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200655096U Expired - Fee Related CN201986059U (en) | 2011-03-14 | 2011-03-14 | STB and standby circuit with low power consumption thereof |
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| Country | Link |
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| CN (1) | CN201986059U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395016A (en) * | 2011-11-23 | 2012-03-28 | 上海大亚科技有限公司 | Control circuit structure for realization of low power standby in set-top box device |
| CN103414933A (en) * | 2013-07-29 | 2013-11-27 | 华为技术有限公司 | Analog video signal output device and electronic device |
-
2011
- 2011-03-14 CN CN2011200655096U patent/CN201986059U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395016A (en) * | 2011-11-23 | 2012-03-28 | 上海大亚科技有限公司 | Control circuit structure for realization of low power standby in set-top box device |
| CN103414933A (en) * | 2013-07-29 | 2013-11-27 | 华为技术有限公司 | Analog video signal output device and electronic device |
| CN103414933B (en) * | 2013-07-29 | 2016-12-28 | 华为技术有限公司 | Analog video signal output device and electronic equipment |
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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: 20110921 Termination date: 20190314 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |