CN201550193U - TV set top box - Google Patents
TV set top box Download PDFInfo
- Publication number
- CN201550193U CN201550193U CN2009202602490U CN200920260249U CN201550193U CN 201550193 U CN201550193 U CN 201550193U CN 2009202602490 U CN2009202602490 U CN 2009202602490U CN 200920260249 U CN200920260249 U CN 200920260249U CN 201550193 U CN201550193 U CN 201550193U
- Authority
- CN
- China
- Prior art keywords
- top box
- resistance
- module
- standby power
- standby
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a TV set top box which comprises a main power supply module, a TV set top box motherboard, a standby power supply module and a standby power supply switching module, wherein the standby power supply module is connected with the main power supply module and the standby power supply switching module respectively; the standby power supply switching module is connected with the main power supply module, the TV set top box motherboard and the standby power supply module respectively; and the standby power supply switching module controls the operating state of the main power supply module according to the change in operating state of the TV set top box motherboard and simultaneously switches the standby power supply module to supply standby power to the TV set top box motherboard or switches the main power supply module to supply working power to the TV set top box motherboard. With the arrangement of the standby power supply module and the standby power supply switching module, the TV set top box can not only reduce the cost as compared with the case that the electronic switch is added on each power supply source but also maintain the working state of the TV set top box before standby, thereby shortening the awakening time and reducing the power consumption of the whole system during the normal operation and the power consumption of the power source.
Description
Technical field
The utility model relates to a kind of set-top box, relates in particular to a kind of set-top box of low-power consumption standby.
Background technology
At present, along with the ripe and popularization of digital television techniques, set-top box has become the matching unit of television set.But the standby of existing most of set-top box all is " false standby ", so-called " false standby ", when standby, just the output of the audio frequency and video of set-top box is turned off exactly, on television set, show like this and do not come out anything, that gives the user feels it has been holding state, and in fact the CPU decoding chip of the inside and motherboard circuit etc. are all working on, and therefore also just still are in the power consumption state.At present, the mode that solves above-mentioned " false standby " generally is to increase electronic switch on each road power supply, directly with each road power-off.But there is following defective in this mode:
1) on each road power supply, increases electronic switch, increase cost;
2) can not keep operating state or show state before the standby of set-top box, when waking up, need restarting systems, thereby the set-top box of above-mentioned standby mode required time when waking up is also long, and the state that wakes the back set-top box up is the state after the start, wants to watch preceding channel of standby and display interface also to need through readjusting.
3) because the set-top box circuit has increased electronic switch, the power consumption during the complete machine operate as normal can increase;
4) operating state of power circuit does not change and the power consumption during work is more or less the same during standby, does not play the effect that essence reduces the power consumption of power supply.
The utility model content
The purpose of this utility model is to provide a kind of set-top box, the power consumption in the time of can not only reducing set-top box standby, and can wake set-top box fast up, and reduced cost simultaneously, reduced the power consumption of set-top box at holding state.
The technical solution of the utility model is as follows:
A kind of set-top box comprises main power source module, set-top box mainboard, standby power module and standby power handover module, and described standby power module is connected with the standby power handover module with described main power source module respectively; Described standby power handover module is connected with described main power source module, standby power module and set-top box mainboard respectively.The standby power handover module is according to the operating state of the variation control main power source module of set-top box mainboard operating state, and switching described standby power module simultaneously provides working power for the set-top box mainboard provides standby power or switch mains power module for described set-top box mainboard.
Preferably, above-mentioned standby power module comprises first circuit and second circuit, and an end of second circuit is connected with the standby power handover module, and the other end is connected with first circuit.
Preferably, above-mentioned first circuit comprises resistance R 1, resistance R 2, capacitor C 1 and diode D1, wherein connects with capacitor C 1 after resistance R 1 and resistance R 2 parallel connections again, and diode D1 is in parallel with resistance R 1, resistance R 2 and capacitor C 1.
Preferably, above-mentioned second circuit comprises resistance R 3, resistance R 4, capacitor C 2, capacitor C 3 and inductance L 1, wherein resistance R 3, resistance R 4, capacitor C 2 and capacitor C 3 parallel connections, and inductance L 1 is series between resistance R 4 and the capacitor C 3.
Preferably, above-mentioned standby power handover module comprises power change-over switch circuit and diverter switch drive circuit, and described power change-over switch circuit one end is connected with the standby power module, and the other end is connected with the diverter switch drive circuit; Diverter switch drive circuit one end is connected with the 3.3V voltage output end of power change-over switch circuit, main power source module respectively, and the other end is connected with the set-top box mainboard.
Preferably, above-mentioned power change-over switch circuit comprises resistance R 5, resistance R 6, resistance R 7, resistance R 12, capacitor C 6 and triode Q2, wherein connects with the parallel circuits that resistance R 12, capacitor C 6, triode Q2 form after resistance R 5, resistance R 6, resistance R 7 parallel connections again.
Preferably, above-mentioned diverter switch drive circuit comprises resistance R 8, resistance R 9, resistance R 10, resistance R 11, capacitor C 4, triode Q1 and diode D2, wherein connects with the parallel circuits that resistance R 8, resistance R 9, diode D2, triode Q1 form after resistance R 10 and capacitor C 4 parallel connections again.
The set-top box that the utility model embodiment is provided is compared with existing set-top box, owing to added standby power module and standby power handover module, for on each road power supply, increasing electronic switch, not only provide cost savings, and can also keep operating state before the standby of set-top box, thereby required shorter when waking up, and the power consumption when reducing the complete machine operate as normal and the power consumption of power supply with the time.
Description of drawings
The set-top box structured flowchart that Fig. 1 provides for the utility model embodiment.
A kind of set-top box circuit construction of electric power schematic diagram that Fig. 2 provides for the utility model embodiment.
The realization of the utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme described in the utility model is described in further detail, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to qualification of the present utility model.
Referring to Fig. 1 and Fig. 2.The set-top box structured flowchart that Fig. 1 provides for the utility model embodiment.The set-top box that the utility model provides comprises main power source module 10, set-top box mainboard 40, standby power module 20 and standby power handover module 30.Standby power module 20 is connected with standby power handover module 30 with main power source module 10 respectively.Standby power handover module 30 is connected with main power source module 10, standby power module 20 and set-top box mainboard 40 respectively.Standby power handover module 30 is according to the operating state of the variation control main power source module 10 of set-top box mainboard 40 operating states, and switching standby power module 20 simultaneously provides working power for set-top box mainboard 40 provides standby power or switch mains power module 10 for set-top box mainboard 40.
A kind of set-top box circuit construction of electric power schematic diagram that Fig. 2 provides for the utility model embodiment.
Main power source module 10 is pulsewidth width modulated formula (Pulse-width Modulation, PWM) power supply.Required various voltages when being used to set-top box that work is provided, such as the audio frequency supply voltage of the set-top box mainboard 40 of+12V ,+5V and+the digital power voltage of the STB mainboard of 3.3V etc.
Main power source module 10 can change automatically, and adjustment enters operating state or holding state according to the operating state of set-top box mainboard 40.In the present embodiment, main power source module 10 is to judge the load variations of set-top box mainboard 40 by the variation of the VSTB voltage of machines top box mainboard 40, thereby judges the operating state of set-top box mainboard 40.
Standby power handover module 30 is according to the operating state of the variation control main power source module 10 of set-top box mainboard 40 operating states, and switching standby power module 20 simultaneously provides working power for set-top box mainboard 40 provides standby power or switch mains power module 10 for set-top box mainboard 40.
First circuit comprises resistance R 1, resistance R 2, capacitor C 1 and diode D1, wherein connects with capacitor C 1 after resistance R 1 and resistance R 2 parallel connections again, and diode D1 is in parallel with resistance R 1, resistance R 2 and capacitor C 1.Second circuit comprises resistance R 3, resistance R 4, capacitor C 2, capacitor C 3 and inductance L 1, wherein resistance R 3, resistance R 4, capacitor C 2 and capacitor C 3 parallel connections, and inductance L 1 is series between resistance R 4 and the capacitor C 3.
Standby power handover module 30 comprises power change-over switch circuit and diverter switch drive circuit, and power change-over switch circuit one end is connected with standby power module 20, and the other end is connected with the diverter switch drive circuit; Diverter switch drive circuit one end is connected with the power change-over switch circuit respectively, and the other end is connected with set-top box mainboard 40.Power change-over switch circuit one end is connected with standby power module 20, the other end is connected with the diverter switch drive circuit, diverter switch drive circuit one end is connected with the 3.3V voltage output end of power change-over switch circuit, main power source module 10 respectively, and the other end is connected with set-top box mainboard 40.
The power change-over switch circuit comprises resistance R 5, resistance R 6, resistance R 7, resistance R 12, capacitor C 6 and triode Q2, wherein connects with the parallel circuits that resistance R 12, capacitor C 6, triode Q2 form after resistance R 5, resistance R 6, resistance R 7 parallel connections again.
The diverter switch drive circuit comprises resistance R 8, resistance R 9, resistance R 10, resistance R 11, capacitor C 4, triode Q1 and diode D2, wherein connects with the parallel circuits that resistance R 8, resistance R 9, diode D2, triode Q1 form after resistance R 10 and capacitor C 4 parallel connections again.
In order to receive user's instruction, set-top box also comprises interface and the key-press module 60 that is connected with set-top box mainboard 40, interface and key-press module 60 receive after the standby command, can trigger set-top box mainboard 40 and enter holding state, set-top box mainboard 40 transmits control signal to the diverter switch drive circuit after entering holding state.This control signal can be low level signal or high level signal.
In the present embodiment, set-top box also comprises panel display module 50, is used for the operating state or the holding state of display machines top box.
Drive triode Q1 conducting after the control signal of diverter switch drive circuit receiving set up box mainboard 40, and by Q1 driving Q2 conducting, and then the conducting by Q2 switches to standby power module 20 to 40 power supplies of set-top box mainboard, and described main power source module 10 enters standby mode simultaneously.
In the present embodiment, set-top box is powered to set-top box mainboard 40 by main power source module 10 when operate as normal, output 3.3VA ,+12V ,+5V ,+voltage of 3.3V, this moment, triode Q1 and Q2 all were in cut-off state, therefore standby power module 20 is not exported standby voltage VH owing to be subjected to the control that Q2 is in cut-off state.When holding state, triode Q1 and Q2 all are in conducting state, so standby power module 20 is at Q2 under the state of conducting, and to set-top box mainboard 40 modules output standby voltage HV, this moment, 3.3VA=3.3VS supplied with 40 standbies of set-top box mainboard.+ 12V is the audio frequency power supply of set-top box mainboard 40 ,+5V and+3.3V is other digital powers of STB mainboard.
To the standby process and the wakeup process of the utility model set-top box be elaborated below:
1, standby process
When the STB mainboard receives standby command from interface and key-press module 60, the master chip of set-top box mainboard 40 just enters the pattern of low-power consumption standby (Standby Controller), this moment is with the clock of closure plane top box correlation unit circuit, reduce the clock frequency of set-top box standby minimum unit, the internal memory of set-top box (DDR/SDRAM) enters self-refresh mode.When main power source module 10 just automatic adjustment when the load that detects set-top box mainboard 40 lightens enters holding state, set-top box mainboard 40 is to standby power handover module 30 output control signals simultaneously, this control signal is the VSTB signal of " low level " in the present embodiment, set-top box mainboard 40 modules, main power source module 10 and standby power module 20 enter holding state respectively at this moment, are specially:
Standby power handover module 30 switches under the effect of control signal by 20 power supplies of standby power module, each road Power supply belt loading capability of set-top box is all lower under the holding state, the voltage HV of its standby power module 20 outputs has only the load capacity about 200ma, set-top box mainboard 40 has only the minimum unit of standby and panel display interface and the button can operate as normal, and other circuit all is in the few loss of function state of power consumption.
After the load that main power source module 10 detects set-top box mainboard 40 lightens, automatically enter holding state subsequently, the low approximately 3.3V of being of HV voltage drop is pressed in standby this moment, the audio voltage of+12V is reduced to 2.6V approximately, the digital voltage of+5V is reduced to 1.0V approximately, 3.3VA voltage is reduced to 0.6V approximately, 3.3VB voltage is reduced to 0.6V approximately.So both guaranteed that set-top box mainboard 40 has only the minimum unit of standby and panel display interface and the button can operate as normal, had guaranteed that again other functional circuit all is in the few loss of function state of power consumption.
2, wakeup process
When set-top box mainboard 40 receives the wake command of arrival interface and key-press module 60, set-top box mainboard 40 each element circuit begin to wake up, recover the supply of each road power supply, recover the clock frequency of set-top box standby minimum unit, the clock of set-top box correlation unit circuit, the internal memory of set-top box enters normal mode of operation.The load of set-top box mainboard 40 at this moment increases the weight of, main power source module 10 is just adjusted automatically when detecting load and become heavy and is entered normal operating conditions, each road output supply voltage recovers normal power supply rapidly, set-top box mainboard 40 output control signals (for example VSTB wake-up signal of high level) are given standby power handover module 30 simultaneously, the current supply circuit of standby power handover module 30 rapid turning off standby power modules 20, and switch to the normal condition of 3.3VA=3.3VS rapidly.This moment, the power supply of set-top box was all born by main power source module 10.Various operating states this process set-top box mainboard 40 can return to standby in the time about 0.3 second before.
The set-top box that the utility model embodiment is provided is compared with existing set-top box, owing to added standby power module 20 and standby power handover module 30, with respect to increasing electronic switch on each road power supply for, existing set-top box not only provides cost savings, and can also keep operating state before the standby of set-top box, thereby required shorter when waking up, and the power consumption when reducing the complete machine operate as normal and the power consumption of power supply with the time.
The above only is a 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 be done; 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 (10)
1. a set-top box comprises main power source module and set-top box mainboard, it is characterized in that, also comprises:
Standby power module and standby power handover module, wherein:
Described standby power module is connected with the standby power handover module with described main power source module respectively;
Described standby power handover module is connected with described main power source module, standby power module and set-top box mainboard respectively;
Described standby power handover module is according to the operating state of the variation control main power source module of set-top box mainboard operating state, and switching described standby power module simultaneously provides working power for the set-top box mainboard provides standby power or switch mains power module for described set-top box mainboard.
2. set-top box as claimed in claim 1 is characterized in that, described standby power module comprises first circuit and second circuit, and an end of described second circuit is connected with the standby power handover module, and the other end is connected with first circuit.
3. set-top box as claimed in claim 2, it is characterized in that, described first circuit comprises resistance R 1, resistance R 2, capacitor C 1 and diode D1, wherein connects with capacitor C 1 after resistance R 1 and resistance R 2 parallel connections again, and diode D1 is in parallel with resistance R 1, resistance R 2 and capacitor C 1.
4. set-top box as claimed in claim 2, it is characterized in that, described second circuit comprises resistance R 3, resistance R 4, capacitor C 2, capacitor C 3 and inductance L 1, wherein resistance R 3, resistance R 4, capacitor C 2 and capacitor C 3 parallel connections, and inductance L 1 is series between resistance R 4 and the capacitor C 3.
5. set-top box as claimed in claim 1, it is characterized in that, described standby power handover module comprises power change-over switch circuit and diverter switch drive circuit, and described power change-over switch circuit one end is connected with the standby power module, and the other end is connected with the diverter switch drive circuit; Described diverter switch drive circuit one end is connected with the 3.3V voltage output end of power change-over switch circuit, main power source module respectively, and the other end is connected with the set-top box mainboard.
6. set-top box as claimed in claim 5, it is characterized in that, described power change-over switch circuit comprises resistance R 5, resistance R 6, resistance R 7, resistance R 12, capacitor C 6 and triode Q2, wherein connects with the parallel circuits that resistance R 12, capacitor C 6, triode Q2 form after resistance R 5, resistance R 6, resistance R 7 parallel connections again.
7. set-top box as claimed in claim 5, it is characterized in that, described diverter switch drive circuit comprises resistance R 8, resistance R 9, resistance R 10, resistance R 11, capacitor C 4, triode Q1 and diode D2, wherein connects with the parallel circuits that resistance R 8, resistance R 9, diode D2, triode Q1 form after resistance R 10 and capacitor C 4 parallel connections again.
8. as claim 6 or 7 described set-top box, it is characterized in that, also comprise the interface and the key-press module that are connected with described set-top box mainboard.
9. set-top box as claimed in claim 8 is characterized in that, described set-top box mainboard transmits control signal to the diverter switch drive circuit after entering holding state.
10. set-top box as claimed in claim 9, it is characterized in that, the control signal that described diverter switch drive circuit receives described set-top box mainboard drives triode Q1 conducting afterwards, and by Q1 driving Q2 conducting, and then switching to the standby power module to the set-top box main board power supply by the conducting of Q2, described main power source module enters standby mode simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202602490U CN201550193U (en) | 2009-11-11 | 2009-11-11 | TV set top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202602490U CN201550193U (en) | 2009-11-11 | 2009-11-11 | TV set top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201550193U true CN201550193U (en) | 2010-08-11 |
Family
ID=42605376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202602490U Expired - Fee Related CN201550193U (en) | 2009-11-11 | 2009-11-11 | TV set top box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201550193U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065206A (en) * | 2010-09-29 | 2011-05-18 | 深圳市九洲电器有限公司 | Set top box capable of switching power automatically and interface type set top box |
| CN102196311A (en) * | 2011-06-09 | 2011-09-21 | 深圳市同洲电子股份有限公司 | Digital television receiving system and method |
| CN102625186A (en) * | 2012-03-13 | 2012-08-01 | 深圳市九洲电器有限公司 | STB (Set Top Box) and system for controlling real standby of STB |
| CN102833604A (en) * | 2012-08-20 | 2012-12-19 | 青岛海信宽带多媒体技术有限公司 | Set top box and fault self-detection method thereof |
| CN102955551A (en) * | 2011-08-19 | 2013-03-06 | 善元科技股份有限公司 | Power supply device |
| CN109547778A (en) * | 2018-12-27 | 2019-03-29 | 湖南国科微电子股份有限公司 | Set-top box testing device |
-
2009
- 2009-11-11 CN CN2009202602490U patent/CN201550193U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102065206A (en) * | 2010-09-29 | 2011-05-18 | 深圳市九洲电器有限公司 | Set top box capable of switching power automatically and interface type set top box |
| CN102065206B (en) * | 2010-09-29 | 2012-07-11 | 深圳市九洲电器有限公司 | Set top box capable of switching power automatically and interface type set top box |
| CN102196311A (en) * | 2011-06-09 | 2011-09-21 | 深圳市同洲电子股份有限公司 | Digital television receiving system and method |
| CN102196311B (en) * | 2011-06-09 | 2013-07-10 | 深圳市同洲电子股份有限公司 | Digital television receiving system and method |
| CN102955551A (en) * | 2011-08-19 | 2013-03-06 | 善元科技股份有限公司 | Power supply device |
| CN102955551B (en) * | 2011-08-19 | 2016-10-12 | 善元科技股份有限公司 | Power supply device |
| CN102625186A (en) * | 2012-03-13 | 2012-08-01 | 深圳市九洲电器有限公司 | STB (Set Top Box) and system for controlling real standby of STB |
| CN102833604A (en) * | 2012-08-20 | 2012-12-19 | 青岛海信宽带多媒体技术有限公司 | Set top box and fault self-detection method thereof |
| CN109547778A (en) * | 2018-12-27 | 2019-03-29 | 湖南国科微电子股份有限公司 | Set-top box testing device |
| CN109547778B (en) * | 2018-12-27 | 2021-03-12 | 湖南国科微电子股份有限公司 | Set-top box testing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201550193U (en) | TV set top box | |
| US20140028278A1 (en) | Dual regulator systems | |
| KR0171857B1 (en) | The control circuits for power supply | |
| CN102957886A (en) | System and method for controlling television set backlight | |
| KR101759345B1 (en) | An apparatus and method for controling a monitor having deep sleep mode | |
| CN201352831Y (en) | Liquid crystal television multi-signal wake-up circuit with ultra-low power consumption | |
| CN102761169B (en) | Power supply control device and electronic device | |
| CN101729830B (en) | Audio-video device with hybrid standby mode and implementation method thereof | |
| CN109683735B (en) | Touch screen wake-up circuit and method and electronic lock | |
| CN101001052A (en) | Power supply apparatus and display apparatus having the same | |
| US11372470B2 (en) | Control system for controlling intelligent system to reduce power consumption based on bluetooth device | |
| US8667307B2 (en) | Power control circuit and method of computer system | |
| US9705323B2 (en) | Power supply system and power control circuit thereof | |
| CN202159236U (en) | Standby switch circuit and miniature electronic device | |
| CN202424884U (en) | Low power consumption standby and awakening television circuit | |
| JP3933467B2 (en) | Voltage detection circuit control device, memory control device having the same device, and memory card having the same device | |
| CN112649724A (en) | Power failure detection circuit and method and MCU chip | |
| US20070294551A1 (en) | Wireless remote control circuit with dual processing units and method therefor | |
| CN213043666U (en) | Low-power consumption standby electronic equipment | |
| CN107302303B (en) | Control circuit for reducing output voltage ripple, driving power supply and television | |
| US10340798B2 (en) | Switching control method for a dual auxiliary power supply | |
| CN201655315U (en) | Low-power consumption and portable DVD | |
| CN102054462B (en) | Low power consumption display control method and relevant display controller | |
| CN216672981U (en) | Key circuit, power control system and vehicle | |
| TW416030B (en) | Power supply module with power saving control |
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: 20100811 Termination date: 20151111 |
|
| EXPY | Termination of patent right or utility model |