CN201717947U - Set-top box - Google Patents
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- CN201717947U CN201717947U CN2010201909856U CN201020190985U CN201717947U CN 201717947 U CN201717947 U CN 201717947U CN 2010201909856 U CN2010201909856 U CN 2010201909856U CN 201020190985 U CN201020190985 U CN 201020190985U CN 201717947 U CN201717947 U CN 201717947U
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Abstract
The embodiment of the utility model discloses a set-top box which relates to the field of multimedia terminal products and is used for solving the problem that the traditional set-top box can not realize the transmission of wireless video and audio signals. The set-top box comprises a main media data processing unit, a video card interface unit and a wireless video card unit, wherein the video card interface unit is connected between the main media data processing unit and the wireless video card unit; the main media data processing unit is used for carrying out decoding operation on a received media steam, obtaining a multimedia interface HDMI signal with high definition and outputting the HDMI signal to the wireless video card unit through the video card interface unit; and the wireless video card unit is used for converting the received HDMI signal to a wireless household digital interface WHDI signal and transmitting. The adoption of the set-top box can realize the transmission of the wireless video and audio signals of the set-top box and multi-point-to-multi-point video sharing.
Description
Technical field
The utility model relates to the multimedia terminal product scope, is specifically related to a kind of set-top box.
Background technology
Video and audio frequency technology applications develops so far, and its signal all is based on, and mode wired, fixed point is transmitted.
HDMI (High Definition Multimedia Interface) (High Definition Multimedia Interface, HDMI) since standard is come out, the simplification of looking audio cable realized connecting promptly only adopts the single line cable just can to transmit the no compressed digital video/audio signal of the highest 5Gbps bandwidth.High-end set-top box in the market substantially all adopts the HDMI standard to carry out the signal transmission.
As shown in Figure 1, the Traditional IP top-set hardware generally is made up of power supply unit, memory cell, main media data processing unit, Ethernet Transmit-Receive Unit and interface unit.The Ethernet Transmit-Receive Unit carries out the Data Format Transform of ethernet physical layer to media access control layer with the Ethernet Media Stream of network interface input, and the Media Stream after will changing sends to main media data processing unit; Main media data processing unit carries out obtaining each analoglike behind the decode operation with the Media Stream that receives and looks audio frequency and digital video-audio signal, and each analoglike that will obtain is looked audio frequency and the digital video-audio signal outputs in the interface unit shown in Figure 2; Memory cell is used for the related software and the application data of memory machine top box.External display device such as television set link to each other with the interface unit of set-top box by cable.
Interface unit as shown in Figure 2 comprises numerous set-top box and looks audio output interface, at least comprise Sony-philips digital interface (Sony/Philips Digital Interface, SPDIF), composite video 1RCA interface, simulation left and right acoustic channels 2RCA interface, component vide 3RCA interface, HDMI interface and SVedio interface etc.
Tradition cable set top box structure and Traditional IP set-top box are similar, just the Ethernet Transmit-Receive Unit is replaced with modem module, be used to receive broadcast media stream, and the broadcast media stream that receives carried out sending to main media data processing unit after data modem is handled operate accordingly.
Follow the develop rapidly of radio network technique, the wireless audio transmission techniques of looking also emerges gradually.(Wireless Home Digital Interface WHDI) is a kind of wireless audio transmission standard of looking of the positive strength of public attention over the past two years to the wireless family digital interface.It provides high-quality, as not have compression wireless connections, can support the transfer rate (non-compression 1080P) of the equivalence of video data up to 3Gbps in 5GHz frequency range 40MHz passage, meets global 5GHz frequency spectrum regulation; Within 100 feet scopes, penetrable wall, and postpone less than 1 millisecond.Compare with traditional wireless transmission standards 802.11a and 802.11b, the characteristics of WHDI standard criterion are its revolutionary video modulation technology.Traditional wireless transmission standards is put on an equal footing video data and common data, and the WHDI standard is thought the high position of the video data low level of comparing, bigger so be prior position to the influence of visual effect, should take more resources and through stricter error correction.Rely on attention, make the WHDI technology be fit to the wireless video transmission more visual influence bigger " significant bits ".
Based on above-mentioned introduction as seen, be the following drawback that traditional cable set top box or Traditional IP set-top box all can't be avoided cable technology:
(1) there are a plurality of signaling interfaces to be used to connect television set on the set-top box, cause cable various;
(2) because too much cable makes set-top box must be placed in the fixed position;
(3), can't realize that video is shared because the restriction of cable connected mode can only realize point-to-point transmission.
The utility model content
The utility model embodiment provides a kind of set-top box, in order to solve the problem that conventional set-top box can't realize wireless video/audio signal transmission.
A kind of set-top box, this set-top box comprises: main media data processing unit, video card interface unit and wireless video card unit, described video card interface unit are connected between main media data processing unit and the wireless video card unit;
Described main media data processing unit, the Media Stream that is used for receiving carries out decode operation, obtains HDMI (High Definition Multimedia Interface) HDMI signal, and this HDMI signal is exported to wireless video card unit by the video card interface unit;
Described wireless video card unit, the HDMI conversion of signals that is used for receiving are wireless family digital interface WHDI signal and emission.
In the utility model, the HDMI signal that the main media data processing unit of set-top box obtains after with decode operation is exported to wireless video card unit by the video card interface unit, wireless video card unit is the laggard line output of WHDI signal with this HDMI conversion of signals, the WHDI signal is a wireless signal, as seen, by the WHDI standard is combined with set-top box, the set-top box that the utility model provides can be carried out the transmission of wireless video/audio signal.
Description of drawings
Fig. 1 is that Traditional IP top-set hardware module of the prior art is formed schematic diagram;
Fig. 2 looks the audio output interface schematic diagram for traditional cable set top box of the prior art;
The structural representation of the set-top box that Fig. 3 provides for the utility model;
Fig. 4 A is the radio HDMI sending module schematic diagram in the utility model;
Fig. 4 B is the wireless video sending module schematic diagram in the utility model;
Fig. 4 C is the wireless video sending module signal conversion process schematic diagram in the utility model;
Fig. 4 D is the traditional cable video card schematic diagram in the utility model;
Fig. 4 E is the traditional cable video card signal transfer process schematic diagram in the utility model;
Fig. 5 looks the audio output interface schematic diagram for set-top box in the utility model;
Fig. 6 is the set-top box embodiment schematic appearance of the utility model WHDI wireless video transmission technology.
Embodiment
In order to solve the problem that existing set-top box can't realize wireless video/audio signal transmission, the utility model provides a kind of set-top box, and this set-top box is carried out wireless output with this WHDI signal after media stream transition is the WHDI signal.
Referring to Fig. 3, the set-top box that the utility model provides specifically comprises:
Main media data processing unit 30, the Media Stream that is used for receiving carries out decode operation, obtains HDMI (High Definition Multimedia Interface) (HDMI) signal, and this HDMI signal is exported;
Video card interface unit 31 is used to connect main media data processing unit and wireless video card unit;
Wireless video card unit 32, the HDMI conversion of signals that is used for described main media data processing unit output is wireless family digital interface (WHDI) signal, and this WHDI signal is exported.
This set-top box also comprises:
Cable video card unit 33 links to each other with the video card interface unit, and the HDMI conversion of signals that is used for main media data processing unit output is the simulation video/audio signal, should simulate video/audio signal and described HDMI signal to export;
Ethernet Transmit-Receive Unit 34, link to each other with main media data processing unit, wherein the Ethernet Transmit-Receive Unit carries out the Data Format Transform of ethernet physical layer to media access control layer with the Ethernet Media Stream of network interface input, and the Media Stream after will changing sends to main media data processing unit;
The received signal of main media data processing unit in the utility model is not limited to Ethernet Media Stream, broadcast media stream, can also be the signal of extended formatting.
Wireless video card unit 32 has following two embodiment:
Embodiment one:
Wireless video card unit in the present embodiment provides the HDMI signal is modulated to the function that wireless WHDI signal is exported, wireless video card unit in the present embodiment is called radio HDMI sending module 131, contour structures comprises a circuit board and transmitting antenna shown in Fig. 4 A.
Concrete, radio HDMI sending module 131 comprises WHDI protocol chip and transmitting antenna, wherein:
The WHDI protocol chip links to each other with transmitting antenna, and the HDMI conversion of signals that is used for main media data processing unit output is the WHDI signal, and this WHDI signal is exported to transmitting antenna;
Transmitting antenna is used for the WHDI signal of WHDI protocol chip output is sent.
Radio HDMI sending module 131 modules can also comprise the golden finger interface holding wire.The golden finger interface holding wire comprises HDMI minimum transfer differential signal (Transition Minimized DifferentialSignaling, TMDS) data wire, clock line, control line and power ground.HDMI TMDS data wire, clock line, control line and power line are the holding wires in the HDMI interface standard.
In the present embodiment, receive the HDMI signal of main media data processing unit output when radio HDMI sending module 131 modules after, be to send to the television set that has the wireless video receiving function by transmitting antenna again behind the WHDI signal with the HDMI conversion of signals by the WHDI protocol chip.In actual use, provide the television set of wireless video receiving function should all possess the HDMI interface at least.
Present embodiment can reduce the consumer cost of electronic hardware and avoid surface structure too huge on the basis that reaches wireless video/audio signal transmission simultaneously.
Embodiment two:
Wireless video card unit in the present embodiment provides the multiclass video/audio signal is modulated to the function that wireless WHDI signal is exported, wireless video card unit in the present embodiment is called wireless video sending module 132, contour structures comprises a T type circuit board and antenna shown in Fig. 4 B.
Particular circuit configurations is shown in Fig. 4 C, and wireless video sending module 132 comprises first modular converter 1321, second modular converter 1322 and transport module 1323, wherein:
First modular converter 1321, directly connecting transport module links to each other, and link to each other with transport module by second modular converter, be used for the HDMI signal of main media data processing unit output is realized that 1 road HDMI signal changes 2 road HDMI signals, in 2 road HDMI signals a road are exported to second modular converter, and transport module is exported on another road;
Second modular converter 1322 is used for the HDMI signal from first modular converter is converted to the simulation video/audio signal, and should simulates video/audio signal and export to transport module;
Transport module 1323 is used for sending after being converted to the WHDI signal from the HDMI signal of first modular converter with from the simulation video/audio signal of second modular converter.
Transport module 1323 specifically comprises WHDI protocol chip and transmitting antenna, wherein:
The WHDI protocol chip links to each other with transmitting antenna, is used for being converted to the WHDI signal, and this WHDI signal being exported to transmitting antenna from the HDMI signal of first transport module and from the simulation video/audio signal of second transport module;
Transmitting antenna is used for the WHDI signal of WHDI protocol chip output is sent.
Present embodiment need carry out the conversion of HDMI signal to other simulation video/audio signals.Signal conversion process is referring to 4C, and first modular converter 1321 transfers 1 road HDMI signal to 2 road HDMI signals, and a road in 2 tunnel the HDMI signal exported to second modular converter, and transport module is exported on another road; Second modular converter 1322 is the simulation video/audio signal with the HDMI conversion of signals of first modular converter output, and the simulation video/audio signal after will changing exports to transport module, and this simulation video/audio signal comprises composite video signal, component video signal, analogue audio frequency left and right sound track signals etc.; Transport module 1323 comprises WHDI protocol chip and transmitting antenna, its function is that the simulation video/audio signal of the HDMI signal of first modular converter output that will receive and the output of second modular converter is converted to the WHDI signal and sends, and realizes the wireless audio frequency transmitting function of looking.
The wireless video card unit that uses present embodiment to provide can obtain bigger compatibility, because the WHDI signal of this wireless video card unit output comprises digital signal and at least a analog signal, external display device such as television set can wherein a kind of numeral of selective reception or analog signal.
In the present embodiment, transfer 1 road HDMI signal to 2 road HDMI signals, be to connect second modular converter 1322 for fear of first modular converter 1321 occurring, connect transport module 1323 again, and the problem of driving force deficiency appears, so carry out 1 the tunnel and divide 2 the tunnel, increase its driving force as repeater.
Cable video card unit 34 has as next embodiment:
Embodiment three:
Cable video card unit in the present embodiment provides the function that adopts wired mode to export the multiclass video/audio signal, and the cable video card unit in the present embodiment is called traditional cable video card 133 contour structures shown in Fig. 4 D.
Concrete circuit structure comprises first modular converter 1321, second modular converter 1322 and wired audio socket unit 1324 of looking in traditional cable video card 133 shown in Fig. 4 E.Wherein the function of first modular converter among first modular converter 1321 and second modular converter, 1322 functions and the embodiment two and second modular converter is identical, tradition cable video card just is replaced by wired audio socket unit of looking with the transport module in the wireless video sending module, and wired audio socket unit of looking is used for and will carries out wired output from the HDMI signal of first modular converter 1321 with from the simulation video/audio signal of second modular converter 1322.
Traditional cable video card in the present embodiment guarantees that wired transition to the wireless video transmission is smooth more, therefore the user wireless video card unit that not only can use the utility model to provide also can select to use traditional cable video card unit to carry out the transmission of wire signal.
Certainly, the set-top box that the utility model provides also comprises power supply unit 36 and memory cell 37, and power supply unit 36 is used for set-top box is powered, and memory cell 37 is used for the related software and the application data of memory machine top box.
In the utility model, the HDMI signal can be sent to the WHDI protocol chip and look voice modulation, and send to wireless video access television set by transmitting antenna.Set-top box in the utility model is keeping under the same situation of existing set-top box partial devices, as shown in Figure 5 all kinds of among Fig. 2 is looked the audio interface socket and substitutes and reduce the loaded down with trivial details purpose of set-top box volume for the video card interface unit to reach looking the audio output interface position.The set-top box embodiment outward appearance of the utility model WHDI wireless video transmission technology as shown in Figure 6, it is made up of Ethernet interface 110, power port 120 and video card interface 130.
Need to prove that the WHDI wireless video transmission technology that the utility model relates to both can have been used and also can use on the Traditional IP set-top box on traditional cable set top box.
The beneficial effects of the utility model are in sum:
In the utility model, the HDMI signal that the main media data processing unit of set-top box obtains after with decode operation is exported to wireless video card unit by the video card interface unit, wireless video card unit is the laggard line output of WHDI signal with this HDMI conversion of signals, the WHDI signal is a wireless signal, as seen, by the WHDI standard is combined with set-top box, the set-top box that the utility model provides can be carried out the transmission of wireless video/audio signal.
Among the embodiment that the utility model provides, can the HDMI signal that receive and other kinds video/audio signal be converted to the WHDI signal by WHDI protocol chip and transmitting antenna and carry out wireless transmission, make the TV-set top box after improving to carry out the transmission of wireless video/audio signal, to realize multi-multipoint signal transmission, promptly many wireless videos insert TV and can simultaneously or selectively receive the wireless video data.
The set-top box cable that the utility model provides has only power line, netting twine or video line at most, for the bigger user of parlor area, set-top box can be placed in study or the bedroom on the nearer position of netting twine socket or TV signal socket, in the parlor or other local TV receptions, alleviated that cable is various, put the fixed position, the problem of point-to-point transmission by the wireless audio transmission techniques of looking of WHDI greatly.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1. a set-top box is characterized in that, this set-top box comprises: main media data processing unit, video card interface unit and wireless video card unit, described video card interface unit are connected between main media data processing unit and the wireless video card unit;
Described main media data processing unit, the Media Stream that is used for receiving carries out decode operation, obtains HDMI (High Definition Multimedia Interface) HDMI signal, and this HDMI signal is exported to wireless video card unit by the video card interface unit;
Described wireless video card unit, the HDMI conversion of signals that is used for receiving are wireless family digital interface WHDI signal and emission.
2. set-top box as claimed in claim 1 is characterized in that, described set-top box comprises:
The Ethernet Transmit-Receive Unit, link to each other with main media data processing unit, described Ethernet Transmit-Receive Unit carries out the Data Format Transform of ethernet physical layer to media access control layer with the Ethernet Media Stream of network interface input, and the Media Stream after will changing is exported to main media data processing unit.
3. set-top box as claimed in claim 1 is characterized in that, described set-top box comprises:
Modem module links to each other with main media data processing unit, and described modem module receives broadcast media stream from antenna, and the broadcast media stream that receives is carried out exporting to main media data processing unit after data modem is handled.
4. set-top box as claimed in claim 1 is characterized in that, described wireless video card unit comprises: WHDI protocol chip and transmitting antenna, and described WHDI protocol chip links to each other with transmitting antenna;
Described WHDI protocol chip is used for the HDMI conversion of signals of main media data processing unit output is the WHDI signal and exports to transmitting antenna;
Described transmitting antenna is used to launch the WHDI signal that receives.
5. set-top box as claimed in claim 1, it is characterized in that, described wireless video card unit comprises: first modular converter, second modular converter and transport module, and described first modular converter directly connects transport module, and links to each other with transport module by second modular converter;
Described first modular converter is used for the HDMI signal of main media data processing unit output is realized that 1 road HDMI signal changes 2 road HDMI signals, and a road in 2 road HDMI signals is exported to second modular converter that transport module is exported on another road;
Described second modular converter is the simulation video/audio signal with the HDMI conversion of signals that receives, and exports to transport module;
Described transport module is launched after the HDMI signal that is used for receiving is converted to the WHDI signal with the simulation video/audio signal.
6. set-top box as claimed in claim 5 is characterized in that, described transport module comprises: WHDI protocol chip and transmitting antenna, and described WHDI protocol chip links to each other with transmitting antenna;
Described WHDI protocol chip is used for being converted to the WHDI signal, and this WHDI signal being exported to transmitting antenna from the HDMI signal of first transport module and from the simulation video/audio signal of second transport module;
Transmitting antenna is used to launch the WHDI signal that receives.
7. set-top box as claimed in claim 1 is characterized in that, described set-top box also comprises:
Cable video card unit links to each other with the video card interface unit, is used for the HDMI conversion of signals of main media data processing unit output is the simulation video/audio signal, should simulate video/audio signal and described HDMI signal is exported.
8. set-top box as claimed in claim 7, it is characterized in that, described cable video card unit comprises: first modular converter, second modular converter and wired audio socket unit of looking, described first modular converter directly connects the audio socket unit, and links to each other with the audio socket unit by second modular converter;
Described first modular converter is used for the HDMI signal of main media data processing unit output is realized that 1 road HDMI signal changes 2 road HDMI signals that a road in 2 road HDMI signals are exported to second modular converter, and wired audio socket unit of looking is exported on another road;
Described second modular converter, the HDMI signal with receiving is converted to the simulation video/audio signal, and should simulate video/audio signal and export to wired audio socket unit of looking;
Described wired audio socket unit of looking, the HDMI signal and the simulation video/audio signal that are used for receiving carry out wired output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201909856U CN201717947U (en) | 2010-05-12 | 2010-05-12 | Set-top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201909856U CN201717947U (en) | 2010-05-12 | 2010-05-12 | Set-top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201717947U true CN201717947U (en) | 2011-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201909856U Expired - Lifetime CN201717947U (en) | 2010-05-12 | 2010-05-12 | Set-top box |
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| Country | Link |
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| CN (1) | CN201717947U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102143344A (en) * | 2011-04-11 | 2011-08-03 | 成都九洲迪飞科技有限责任公司 | Multi-interface board of wireless high-definition video transmission machine |
| CN102170535A (en) * | 2011-03-07 | 2011-08-31 | 世盟科信（北京）国际科技发展有限公司 | Television signal restore and output system |
| CN103260063A (en) * | 2012-02-15 | 2013-08-21 | 台景达科技股份有限公司 | Wireless transmission set-top-box |
| WO2013159303A1 (en) * | 2012-04-26 | 2013-10-31 | 华为技术有限公司 | Program receiving method and set top box |
| CN103856802A (en) * | 2012-12-04 | 2014-06-11 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN104506927A (en) * | 2014-12-23 | 2015-04-08 | 方正宽带网络服务有限公司 | Signal transmission method and device between television box and television |
| CN105490703A (en) * | 2015-12-28 | 2016-04-13 | 生迪智慧科技有限公司 | Audio frequency reception device, method and wireless play system |
-
2010
- 2010-05-12 CN CN2010201909856U patent/CN201717947U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170535A (en) * | 2011-03-07 | 2011-08-31 | 世盟科信（北京）国际科技发展有限公司 | Television signal restore and output system |
| CN102143344A (en) * | 2011-04-11 | 2011-08-03 | 成都九洲迪飞科技有限责任公司 | Multi-interface board of wireless high-definition video transmission machine |
| CN102143344B (en) * | 2011-04-11 | 2012-10-24 | 成都九洲迪飞科技有限责任公司 | Multi-interface board of wireless high-definition video transmission machine |
| CN103260063A (en) * | 2012-02-15 | 2013-08-21 | 台景达科技股份有限公司 | Wireless transmission set-top-box |
| WO2013159303A1 (en) * | 2012-04-26 | 2013-10-31 | 华为技术有限公司 | Program receiving method and set top box |
| CN103609133A (en) * | 2012-04-26 | 2014-02-26 | 华为技术有限公司 | Program receiving method and set top box |
| CN103856802A (en) * | 2012-12-04 | 2014-06-11 | 深圳市同洲电子股份有限公司 | Audio and video transmission method and digital television terminal |
| CN104506927A (en) * | 2014-12-23 | 2015-04-08 | 方正宽带网络服务有限公司 | Signal transmission method and device between television box and television |
| CN105490703A (en) * | 2015-12-28 | 2016-04-13 | 生迪智慧科技有限公司 | Audio frequency reception device, method and wireless play system |
| CN105490703B (en) * | 2015-12-28 | 2018-03-16 | 生迪智慧科技有限公司 | Apparatus for receiving audio, method and radio play system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110119 |