CN201674569U - POE set top box - Google Patents
POE set top box Download PDFInfo
- Publication number
- CN201674569U CN201674569U CN2010201872315U CN201020187231U CN201674569U CN 201674569 U CN201674569 U CN 201674569U CN 2010201872315 U CN2010201872315 U CN 2010201872315U CN 201020187231 U CN201020187231 U CN 201020187231U CN 201674569 U CN201674569 U CN 201674569U
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- top box
- module
- poe
- ethernet
- power
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Abstract
The utility model provides a POE set top box, which comprises an Ethernet interface and a PD control module, wherein the Ethernet interface is connected in an Ethernet, wherein an input end of the PD control module is connected with the Ethernet interface, and is used to separate direct current power supply signals and Ethernet differential data signals, and respectively supplies the separated direct current power supply signals and Ethernet differential data signals for a power supply process module and a network data process module of a set top box. The POE set top box directly reduces the number of cables which are connected with the set top box through supporting POE technology, and increases the safety of equipment. Simultaneously, a PD control module uses a transformer, thereby achieving complete insulation of the set top box and external electrical properties, and increasing the reliability and anti-interference ability of single plates of the set top box.
Description
Technical field
The utility model relates to a kind of TV top box of digital machine, relates in particular to a kind of set-top box of the POE of support Power over Ethernet, belongs to the digital media technical field.
Background technology
Along with the popularization of Digital Television, set-top box is progressively come into huge numbers of families, and wherein the IP set-top box has also obtained using widely.The power interface of existing IP set-top box and data-interface are as shown in Figure 1, the power interface of IP set-top box and data-interface are separately independently, the power supply of modem top box is provided by stand-alone interface (101), and after power supply enters set-top box by stand-alone interface (101), produce the required all size power supply of set-top box veneer by follow-up power supply processing module again; The data that set-top box needs are provided by Ethernet interface (102), and 8 cables are arranged in the Ethernet interface (102), wherein, only used 1,2,3,6 four cable and be used for transmitting differential data signals, and 4,5,7,8 these four cables now are in idle state.
This data-interface and power interface be way independently separately, directly increased the number of cables of the required connection of set-top box, for the set-top box design personnel, the difficulty of set-top box veneer wiring and the complexity of set-top box product experiment authentication have been increased, simultaneously, cable in the Ethernet interface is not fully utilized yet, and has wasted resource.
POE (Power Over Ethernet) Power over Ethernet technology is utilized existing Ethernet wiring architecture, just can guarantee under the situation of it goes without doing any change that in some IP-based terminal transmission data-signals, kind equipment provides DC power supply for this reason.The POE technology is with a general Ethernet cable transmission of data signals and dc power signal simultaneously, and power supply and data integration in the middle of same wired system, have been guaranteed the normal operation of existing network when guaranteeing existing structure wiring safety.The POE technical specification will support the equipment of POE to be divided into PSE and PD, i.e. power supply unit and power receiving equipment.Power supply needs through detection, classification and three steps of power supply PSE to PD.PSE at first can detect the equipment that inserts determining whether access device is the PD equipment that meets POE Power over Ethernet technical specification, is determining to begin to carry out classification after access device is to meet the PD equipment of POE Power over Ethernet technical specification.PSE determines the PD equipment that inserts is provided the size of power according to classification results.After the classification normal termination, PSE just begins formally to give the PD power devices.
In sum, solve the problems referred to above of IP set-top box, need make set-top box support the POE technology.
The utility model content
The utility model by supporting the POE technology, realizes that data-interface and power interface are unified into the new digital TV-set top box of an interface at the present situation independently separately of data-interface and power interface in the current IP set-top box product.
A kind of POE set-top box of the present utility model comprises
The Ethernet interface of access network based on ethernet;
The PD control module, its input connects Ethernet interface, be used to separate dc power signal and Ethernet differential data signals, and the dc power signal that will separate and Ethernet differential data signals offer the power supply processing module and the network data processing module of set-top box respectively.
Set-top box described in the utility model is compared with the current IP set-top box, by the PD control module in the integrated support POE of set-top box side technology, the data-interface of set-top box and power interface unification to Ethernet interface, is had following beneficial effect:
1. the data-interface of set-top box and power interface unification are fully used the cable on the Ethernet interface to Ethernet interface, have directly reduced the number of cables of the required connection of set-top box, have eliminated the risk of leaking electricity on the circuit, have increased the fail safe of equipment.
2. for the set-top box design personnel, reduced the complexity of veneer wiring.
Description of drawings
Fig. 1 is data-interface and power interface schematic block diagram on the existing IP set-top box;
Fig. 2 supports the schematic diagram of POE power supply for the utility model set-top box;
Fig. 3 is a PD control module functional schematic.
101 power interfaces for existing IP set-top box; 102 data-interfaces for existing IP set-top box; 201 is the Ethernet interface of the utility model set-top box; 202 is the PD control module; 301 are power supply extraction converting means; 302 are differential data isolation transmission unit; 401 is the rectifier bridge module; 402 are PD detection and diversity module; 403 is the PWM modulation module; 404 is the isolated from power transport module; 405 is power rectifier and filtration module.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:
Be illustrated in figure 2 as the utility model set-top box and support the schematic diagram of POE power supply,
Described POE set-top box comprises the Ethernet interface (201) of access network based on ethernet and is integrated in the PD control module (202) that the set-top box side is supported the POE technology.The input of described PD control module (202) connects Ethernet interface (201), be used to separate dc power signal and Ethernet differential data signals, and the dc power signal that will separate and Ethernet differential data signals offer the power supply processing module and the network data processing module of set-top box respectively, powers for set-top box is provided by differential data signals provide with POE simultaneously.
With reference to figure 3, the figure shows the function signal of PD control module in the utility model top box of digital machine.The PD control module comprises:
The power supply that separates the Ethernet dc power signal extracts converting means (301), its input connects Ethernet interface, its output junctor top box power supply processing module, be used for separating the dc power signal of Ethernet, and the dc power signal that Ethernet provides is converted to the required dc power signal of set-top box;
Separate the differential data of Ethernet differential data signals and isolate transmission unit (302), its input connects Ethernet interface, and its output connects described set-top box network data processing module.
Above-mentioned power supply extracts converting means (301) and comprises that the rectifier bridge module (401), the PD that link to each other successively detect and diversity module (402), PWM modulation module (403), isolated from power transport module (404), power rectifier and filtration module (405), be used for eight cable power takings from Ethernet interface, and DC power supply is transformed to the operable DC power supply of set-top box, simultaneously, isolating exterior electric attribute.
It is transformer that above-mentioned differential data is isolated transmission unit (302), comprise and have tapped two primary coils and two secondary coils, the primary coil input links to each other with the data cable of Ethernet interface, the secondary coil output links to each other with the network data processing module of set-top box, be used for extracting differential data, and send into the network data processing module of set-top box from the data cable of Ethernet interface.
Above-mentioned rectifier bridge module (401) comprises the rectifier bridge BR1 that directly links to each other with the idle cable of Ethernet interface, and isolate the rectifier bridge BR2 that the centre tap of the primary coil of transmission unit (302) links to each other with differential data, be used to extract the dc power signal on the Ethernet cable of access, dc power signal be treated to the upper end send into described PD for positive lower end for negative dc power signal and detect and diversity module (402).
Above-mentioned PD detects and diversity module (402) is used for set-top box is detected and classification, for set-top box provides suitable DC power supply, and sends into isolated from power transport module (404) by PWM modulation module (403).
Above-mentioned isolated from power transport module (404) is a transformer.
Above-mentioned power rectifier and filtration module (405) are the AC signal rectifying and wave-filtering of isolating with extraneous electric attribute direct current signal, send into the set-top box power module then.
The course of work of PD control module is as follows in the utility model top box of digital machine:
Rectifier bridge module (401) and Ethernet interface RJ45 isolate transmission unit (302) with described differential data and are connected, and are used to extract the dc power signal on the Ethernet cable of access.Ethernet interface has 8 cables, and wherein, 1,2,3,6 four cable is used for transmitting differential data signals, and 4,5,7,8 these four cables now are in idle state.According to POE Power over Ethernet technical specification, DC power supply may directly be carried on the cable of 1,2,3,6 four transmission of data wire differential data signals, also may be by 4,5,7,8 four idle at present cable transmission, and to add flowing to of DC power supply indefinite, therefore if will occur 1,2 when DC power supply directly is carried on the data wire 1,2,3,6 for just, 3,6 for negative, perhaps opposite situation, if by 4,5,7,8 idle at present transmission, may occur 4,5 for just, 7,8 for negative, perhaps opposite situation.Therefore, at above-mentioned two kinds of different situations, rectifier bridge module (401) is made up of rectifier bridge BR1 and rectifier bridge BR2, wherein rectifier bridge BR1 is used for directly from 4 of the Ethernet that inserts, 5,7, power taking on 8 four idle cables, promptly 4,5 and 7,8 connect the input of rectifier bridge BR1 respectively, rectifier bridge BR2 isolates transmission unit (302) by differential data and realizes from 1,2,3, power taking on the 6 four single data cables, promptly 1,2,3,6 connect the input that differential data is isolated two primary coils of transmission unit (302) respectively, and the power supply signal on the data cable is sent into rectifier bridge BR2 by two centre taps of primary coil.Regardless of the flow direction of sending into the electric current among rectifier bridge BR1 and the rectifier bridge BR2, just be output as (V+) through the dc power signal upper end that obtains after rectifier bridge module (401) processing, the lower end is output as negative (V-), handles facilitating for subsequent conditioning circuit.
Dc power signal after rectifier bridge module (401) is handled enters PD and detects and diversity module (402).PD detects and diversity module (402) is used for set-top box is detected and classification, for set-top box provides suitable DC power supply.At first, PD detects and diversity module (402) is made correct response to the PD device detection signal that PSE sends, making PSE can correct cognitron top box be effective PD equipment, the PD sizing of equipment signal that PSE is sent is made reasonable response then, make PSE carry out reasonable classification, thereby provide suitable power for set-top box set-top box.
Described PD detects and the dc power signal of diversity module (402) output enters PWM module (403), and the PWM that is finished dc power signal by this module modulates, and modulation becomes AC signal through PWM to make dc power signal.
Described PWM modulation module (403) modulation PD detects and the dc power signal of diversity module (402) output is to send into isolated transmission module (404) behind the ac supply signal, be used for set-top box and extraneous isolation fully on electric attribute, realize the isolation transmission of power supply.Present embodiment is example with the transformer, and AC signal is coupled to secondaryly from elementary, promptly realizes the isolation of power supply.
Because of the secondary output signal after transformer coupled is still AC signal, therefore, described power rectifier and filtration module (405) are the AC signal rectifying and wave-filtering of isolating with extraneous electric attribute direct current signal, send into the power supply processing module of set-top box then.
Isolate the network data processing module of sending into set-top box after transmission unit (302) is handled via differential data from the differential data signals that Ethernet interface enters.Present embodiment is example with the transformer, and the Ethernet differential data signals is coupled to secondaryly by elementary, enters the network data processing module of set-top box then from secondary output, realizes the isolation of data-signal.
By the isolation of data-signal and the isolation of DC power supply, this set-top box has realized the isolation fully on electric attribute with the external world, has reduced the interference of outer bound pair set-top box veneer, has improved the reliability and the antijamming capability of set-top box veneer.
Above-mentioned specific embodiment is used for more detailed description technology described in the utility model; be not used in restriction the utility model; therefore, all any modification, improvement and replacements of being made on basis of the present utility model are included within the protection range of the present utility model.
Claims (10)
1. a POE set-top box is characterized in that, comprises
The Ethernet interface of access network based on ethernet;
The PD control module, its input connects Ethernet interface, be used to separate dc power signal and Ethernet differential data signals, and the dc power signal that will separate and Ethernet differential data signals offer the power supply processing module and the network data processing module of set-top box respectively.
2. POE set-top box according to claim 1 is characterized in that, the PD control module comprises:
The power supply that separates the Ethernet dc power signal extracts converting means, and its input connects Ethernet interface, its output junctor top box power supply processing module;
Separate the differential data of Ethernet differential data signals and isolate transmission unit, its input connects Ethernet interface, output junctor top box network data processing module.
3. POE set-top box according to claim 2 is characterized in that, described power supply extracts converting means and comprises rectifier bridge module, PD detection and diversity module, PWM modulation module, isolated from power transport module, power rectifier and the filtration module that links to each other successively.
4. POE set-top box according to claim 3 is characterized in that, it is transformer that described differential data is isolated transmission unit, comprises having tapped two primary coils and two secondary coils.
5. POE set-top box according to claim 4, it is characterized in that described rectifier bridge module comprises that the first rectifier bridge BR1 and input and differential data that input links to each other with the idle cable of Ethernet interface isolates the second rectifier bridge BR2 that the centre tap of two primary coils of transmission unit links to each other.
6. POE set-top box according to claim 4 is characterized in that, the input that described differential data is isolated two primary coils of transmission unit links to each other with the data cable of Ethernet interface.
7. POE set-top box according to claim 3 is characterized in that, the dc power signal that described rectifier bridge module is extracted on the Ethernet cable that inserts is sent into described PD detection and diversity module.
8. POE set-top box according to claim 3 is characterized in that, described PD detects and diversity module is used for set-top box is detected and classification, for set-top box provides suitable DC power supply, and sends into the isolated from power transport module by the PWM modulation module.
9. POE set-top box according to claim 8 is characterized in that, described isolated from power transport module is a transformer.
10. POE set-top box according to claim 3 is characterized in that, described power rectifier and filtration module are the AC signal rectifying and wave-filtering of isolating with extraneous electric attribute direct current signal, send into the set-top box power module then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201872315U CN201674569U (en) | 2010-05-05 | 2010-05-05 | POE set top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201872315U CN201674569U (en) | 2010-05-05 | 2010-05-05 | POE set top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201674569U true CN201674569U (en) | 2010-12-15 |
Family
ID=43331976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201872315U Expired - Lifetime CN201674569U (en) | 2010-05-05 | 2010-05-05 | POE set top box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201674569U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125076A (en) * | 2014-07-04 | 2014-10-29 | 深圳创维数字技术股份有限公司 | POE (Power Over Ethernet) multimedia terminal |
| CN105072363A (en) * | 2015-09-25 | 2015-11-18 | 四川金网通电子科技有限公司 | Wireless set top box with POE port |
| CN109257533A (en) * | 2018-03-15 | 2019-01-22 | 北京筑梦园科技有限公司 | A kind of networking power supply unit and camera device for camera |
-
2010
- 2010-05-05 CN CN2010201872315U patent/CN201674569U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104125076A (en) * | 2014-07-04 | 2014-10-29 | 深圳创维数字技术股份有限公司 | POE (Power Over Ethernet) multimedia terminal |
| CN105072363A (en) * | 2015-09-25 | 2015-11-18 | 四川金网通电子科技有限公司 | Wireless set top box with POE port |
| CN105072363B (en) * | 2015-09-25 | 2018-02-13 | 四川金网通电子科技有限公司 | Wireless set-top box with POE ports |
| CN109257533A (en) * | 2018-03-15 | 2019-01-22 | 北京筑梦园科技有限公司 | A kind of networking power supply unit and camera device for camera |
| CN109257533B (en) * | 2018-03-15 | 2024-03-26 | 北京筑梦园科技有限公司 | Networking power supply device for camera and camera equipment |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |