CN203951590U - A kind of safe machine top box of being powered by USB interface - Google Patents
A kind of safe machine top box of being powered by USB interface Download PDFInfo
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- CN203951590U CN203951590U CN201420251684.8U CN201420251684U CN203951590U CN 203951590 U CN203951590 U CN 203951590U CN 201420251684 U CN201420251684 U CN 201420251684U CN 203951590 U CN203951590 U CN 203951590U
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- top box
- usb interface
- set top
- contact
- signal
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Abstract
The utility model discloses a kind of safe machine top box of being powered by USB interface, it comprises the USB interface being arranged in Set Top Box, power distribution module, protective circuit and signal processing module, the USB interface of television set is connected with the USB interface of Set Top Box, the USB interface of Set Top Box is connected with power distribution module, the output of power distribution module is connected with the input of protective circuit, the output of protective circuit is connected with the feeder ear of signal processing module, the signal output part of signal processing module is connected with the signal input part of television set, the signal input part of signal processing module is connecting TV signal and network signal respectively.The utility model can be powered by USB interface, without special power line is set, can prevent the damage of frequent switching on and shutting down to Set Top Box internal circuit, improves the security performance of Set Top Box.
Description
Technical field
The utility model relates to a kind of safe machine top box of being powered by USB interface.
Background technology
TV set-top box (Set Top Box), does not have the definition of standard, and in a broad sense, every network-termination device being connected with television set all can be referred to as Set Top Box.Analog channel supplement device from the past based on cable TV network, analog channel decoder, all can be described as Set Top Box to " Wella this " device for logging on network top box that telephone wire and television set are linked together, Integrated Receive Decoder (IRD, Integrated Receive Decoder), digital ground Set Top Box and the cable television digital set-top box of digital satellite.From narrowly, if only say digital device, Set Top Box can be divided into device for logging on network top box, digital satellite Set Top Box (DVB-S), digital ground Set Top Box (DVB-T), cable television digital set-top box (DVB-C) and the most emerging IPTV Set Top Box etc. by major function.
Traditional Set Top Box can only adopt mains-supplied, and supply power mode is single, and may occur the situations such as undertension, is unfavorable for the normal work of Set Top Box.
Set Top Box is the in the situation that of frequent switching on and shutting down, and the instantaneous pressure producing can damage top-set hardware equipment, totally unfavorable to the work of Set Top Box, the useful life of having reduced Set Top Box.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of safe machine top box of being powered by USB interface is provided, can be powered by USB interface, without special power line is set, can prevent the damage of frequent switching on and shutting down to Set Top Box internal circuit, improve the security performance of Set Top Box.
The purpose of this utility model is achieved through the following technical solutions: a kind of safe machine top box of being powered by USB interface, it comprises the USB interface being arranged in Set Top Box, power distribution module, protective circuit and signal processing module, the USB interface of television set is connected with the USB interface of Set Top Box, the USB interface of Set Top Box is connected with power distribution module, the output of power distribution module is connected with the input of protective circuit, the output of protective circuit is connected with the feeder ear of signal processing module, the signal output part of signal processing module is connected with the signal input part of television set, the signal input part of signal processing module is connecting TV signal and network signal respectively.
Described protective circuit comprises metal-oxide-semiconductor Q1, linked switch SW, capacitor C 1 and triode T1, described linked switch SW comprises four contacts, the second contact, the 3rd contact is positioned at the same side, be series between the USB interface and power distribution module of Set Top Box, the first contact, the 4th contact is positioned at the same side, be connected in the two ends of capacitor C 1, the first contact ground connection, selector switch is connected with the 4th contact by resistance R 4, the 4th contact is also connected with the base stage of triode T1 by resistance R 3, the grounded emitter of triode T1, collector electrode is connected with the grid of metal-oxide-semiconductor Q1 by resistance R 2, the source electrode of metal-oxide-semiconductor connects reference level, drain electrode is connected with power supply interface, between source electrode and grid, be also serially connected with resistance R 1.
The beneficial effects of the utility model are:
(1) powered by USB interface, saved special power line is set, easy to use.
(2) be provided with protective circuit, prevented the damage of frequent switching on and shutting down to Set Top Box internal circuit, improved the security performance of Set Top Box;
(3) in protective circuit, be provided with linked switch and metal-oxide-semiconductor, press after switch voltage and flow to signal processing module after by metal-oxide-semiconductor, realized the delay to supply power voltage, protected Set Top Box internal circuit to avoid the damage of instantaneous pressure.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model protective circuit circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection range of the present utility model is not limited to the following stated.
As shown in Figure 1, a kind of safe machine top box of being powered by USB interface, it comprises the USB interface being arranged in Set Top Box, power distribution module, protective circuit and signal processing module, the USB interface of television set is connected with the USB interface of Set Top Box, the USB interface of Set Top Box is connected with power distribution module, the output of power distribution module is connected with the input of protective circuit, the output of protective circuit is connected with the feeder ear of signal processing module, the signal output part of signal processing module is connected with the signal input part of television set, the signal input part of signal processing module is connecting TV signal and network signal respectively.
As shown in Figure 2, described protective circuit comprises metal-oxide-semiconductor Q1, linked switch SW, capacitor C 1 and triode T1, described linked switch SW comprises four contacts, the second contact, the 3rd contact is positioned at the same side, be series between the USB interface and power distribution module of Set Top Box, the first contact, the 4th contact is positioned at the same side, be connected in the two ends of capacitor C 1, the first contact ground connection, selector switch is connected with the 4th contact by resistance R 4, the 4th contact is also connected with the base stage of triode T1 by resistance R 3, the grounded emitter of triode T1, collector electrode is connected with the grid of metal-oxide-semiconductor Q1 by resistance R 2, the source electrode of metal-oxide-semiconductor connects reference level, drain electrode is connected with power supply interface, between source electrode and grid, be also serially connected with resistance R 1.
The above is only preferred implementation of the present utility model, be to be understood that the utility model is not limited to disclosed form herein, should not regard the eliminating to other embodiment as, and can be used for various other combinations, amendment and environment, and can, in contemplated scope described herein, change by technology or the knowledge of above-mentioned instruction or association area.And the change that those skilled in the art carry out and variation do not depart from spirit and scope of the present utility model, all should be in the protection range of the utility model claims.
Claims (2)
1. a safe machine top box of being powered by USB interface, it is characterized in that: it comprises the USB interface being arranged in Set Top Box, power distribution module, protective circuit and signal processing module, the USB interface of television set is connected with the USB interface of Set Top Box, the USB interface of Set Top Box is connected with power distribution module, the output of power distribution module is connected with the input of protective circuit, the output of protective circuit is connected with the feeder ear of signal processing module, the signal output part of signal processing module is connected with the signal input part of television set, the signal input part of signal processing module is connecting TV signal and network signal respectively.
2. a kind of safe machine top box of being powered by USB interface according to claim 1, it is characterized in that: described protective circuit comprises metal-oxide-semiconductor Q1, linked switch SW, capacitor C 1 and triode T1, described linked switch SW comprises four contacts, the second contact, the 3rd contact is positioned at the same side, be series between the USB interface and power distribution module of Set Top Box, the first contact, the 4th contact is positioned at the same side, be connected in the two ends of capacitor C 1, the first contact ground connection, selector switch is connected with the 4th contact by resistance R 4, the 4th contact is also connected with the base stage of triode T1 by resistance R 3, the grounded emitter of triode T1, collector electrode is connected with the grid of metal-oxide-semiconductor Q1 by resistance R 2, the source electrode of metal-oxide-semiconductor connects reference level, drain electrode is connected with power supply interface, between source electrode and grid, be also serially connected with resistance R 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251684.8U CN203951590U (en) | 2014-05-16 | 2014-05-16 | A kind of safe machine top box of being powered by USB interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251684.8U CN203951590U (en) | 2014-05-16 | 2014-05-16 | A kind of safe machine top box of being powered by USB interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203951590U true CN203951590U (en) | 2014-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251684.8U Expired - Fee Related CN203951590U (en) | 2014-05-16 | 2014-05-16 | A kind of safe machine top box of being powered by USB interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203951590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105681849A (en) * | 2016-03-11 | 2016-06-15 | 浪潮软件集团有限公司 | Network set top box and display system |
| CN107834842A (en) * | 2017-11-15 | 2018-03-23 | 珠海经济特区金品电器有限公司 | The anti-clutter circuit and television set of a kind of while powered TV set and set top box |
-
2014
- 2014-05-16 CN CN201420251684.8U patent/CN203951590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105681849A (en) * | 2016-03-11 | 2016-06-15 | 浪潮软件集团有限公司 | Network set top box and display system |
| CN107834842A (en) * | 2017-11-15 | 2018-03-23 | 珠海经济特区金品电器有限公司 | The anti-clutter circuit and television set of a kind of while powered TV set and set top box |
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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: 20141119 Termination date: 20190516 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |