CN101917541A - Wireless set-top box - Google Patents
Wireless set-top box Download PDFInfo
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- CN101917541A CN101917541A CN2010102332639A CN201010233263A CN101917541A CN 101917541 A CN101917541 A CN 101917541A CN 2010102332639 A CN2010102332639 A CN 2010102332639A CN 201010233263 A CN201010233263 A CN 201010233263A CN 101917541 A CN101917541 A CN 101917541A
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Abstract
The invention discloses a wireless set-top box, which comprises a tuning module, a channel demodulation module, a carrier communication transmitting module, a carrier communication receiving module and an information source decoding module, wherein the tuning module receives signals from a cable television network, and transmits the modulation signals to the carrier communication transmitting module; the carrier communication transmitting module outputs the modulation signals to a power grid, and transmits the modulation signals through the power grid; the carrier communication receiving module receives the modulation signals from the power grid, demodulates the signals, and then transmits the signals to the information source decoding module; and the information source decoding module generates audio and video signals by using the demodulated signals and then transmits the audio and video signals to a display device. The wireless set-top box has convenient operation, the set-top box and a television have no connection constraint, and the same set-top box can be connected with a plurality of display devices.
Description
Technical field
The present invention relates to the digital television signal treatment technology, relate in particular to a kind of wireless set-top box based on power line carrier technology.
Background technology
Along with the function that set-top box realizes is increasing, backplane interface connects also more and more, causes signal connecting line numerous, promptly causes operational trouble, and influence is attractive in appearance on certain program again, and therefore, wireless set-top box has just had realistic meaning.At present, there has been a kind of wireless network (WIFI) module of utilizing to carry out method of wireless communication on the market, promptly on set-top box, the TS stream packets is launched with wireless mode by the WIFI module, one or more display terminals obtain the TS stream packets by the WIFI module, supply with display terminal after becoming audio-video signal by source coding again, the inner integrating WIFI module of its display terminal need not connect by outside terminal, thereby realizes the wireless connections of display unit.In the said method, display terminal also needs the integrating WIFI module just can receive, if clearly adopt this scheme, can have influence on the selection of client to television set, causes trouble.In addition, adopt communication can cause the not strong local communication quality of wireless signal to descend.
Therefore, how development and Design is a kind of can provide multiple choices to the user, and the wireless set-top box that does not influence communication quality has again become the technical problem that needs to be resolved hurrily at present.
Summary of the invention
The objective of the invention is to propose a kind of wireless set-top box based on power line carrier technology, this set-top box is utilized power line carrier technology, by the power line transmission signal, does not need new transmission network, do not need to connect the audio frequency and video line, as long as there is the place of power line all can use.
For solving the problems of the technologies described above, the wireless set-top box based on power line carrier technology that the present invention proposes comprises: tuner module, channel demodulation module, carrier communication sending module, carrier communication receiver module and source coding module; Described tuner module is from the cable television network received signal, generates TS stream by behind tuning, the channel-decoding, then modulation signal is sent to the carrier communication sending module; Described carrier communication sending module outputs to power line with modulation signal, and transmits by electrical network; Described carrier communication receiver module receives modulation signal and this signal is carried out rectification from electrical network, is sent to the source coding module then; Described source coding module is sent to display device after the rectification signal is generated audio-video signal.
In a preferred embodiment, described tuner module, channel demodulation module and carrier communication sending module become one; Described carrier communication receiver module can be installed in the display device, also can separate with display device.
Described carrier communication receiver module front end can also be provided with coupling circuit and signal pre-processing module.
Compared with prior art, the present invention has following beneficial effect:
1, easy to operate, set-top box and television set do not have connection constraints, and same set-top box can connect a plurality of display devices, are fit to very much places such as market;
2, adopt external power line carrier receiver module, can change television set and reach the purpose of wireless receiving.
Description of drawings
The present invention is described in detail below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is a principle schematic of the present invention;
Fig. 2 is the module diagram of set-top box front end of the present invention;
Fig. 3 is the electrical schematic diagram of module shown in Figure 2;
Fig. 4 is the module diagram of set-top box of the present invention rear end;
Fig. 5 is the workflow diagram of carrier communication sending module;
Fig. 6 is the workflow diagram of carrier communication receiver module.
Embodiment
As shown in Figure 1, the wireless set-top box principle based on power line carrier technology that the present invention proposes is that the RF signal is demodulated to TS stream, sending the power line carrier communication sending module to is sent on the power line, utilize power line carrier communication receiver module received signal from the power line at receiving terminal, obtain TS stream and be decoded into audio frequency and look signal and send to television set.In actual the use, the carrier communication receiver module can be integrated in the television set, also can make module (this module can directly be inserted on the television set audio-video interface) separately, to realize a utilizing set-top box to send signal, multiple TV set receives demonstration simultaneously.
As shown in Figure 2, set-top box front end of the present invention comprises tuner module, channel demodulation module and carrier communication sending module.Tuner module is from the cable television network received signal, and by tuning, channel-decoding becomes after the TS stream, is sent to the carrier communication sending module, then modulation signal is outputed to electrical network.
Most crucial part is the power line carrier communication receiver module on carrier communication sending module and the display device among the present invention, and its scheme all is to adopt an application-specific integrated circuit to carry out the transmission and the reception of power line carrier communication.
Fig. 3 is the electrical schematic diagram of carrier communication sending module.After wired signal is input to tuner module, after tuning, become intermediate-freuqncy signal, become MPEG bag data after delivering to the channel demodulation module, deliver to the power line carrier communication sending module and carry out the OFDM modulation, spread spectrum coding, power amplification is delivered on the electrical network after the signal coupling, has just finished the process that audio-video signal is become power line current-carrying signal.U1 is a tuner module among Fig. 3, and U2 is a channel decoding module, and U3 is the power line carrier communication sending module, and U4 is a power module.
Fig. 4 is the schematic diagram that is electrically connected of carrier communication receiver module.Carry out the power line carrier communication rectification by carrier receiving module, generate audio-video signal by TS stream source coding module then and deliver to display device.At carrier communication receiver module front end coupling circuit and signal pre-processing module can be set.
The rear end the same hardware that adopts with the set-top box most variations of source coding part of receiver module is decoded, and the software of whole system all needs the support of operating system, such as ARM operating system.
MPEG channel-decoding and source coding part is very perfect in all set-top box on software, carries the transmission of communication and receives subprogram and increased power line in the scheme that the present invention proposes, and workflow as shown in Figure 5 and Figure 6.
Claims (5)
1. a wireless set-top box is characterized in that comprising: tuner module, channel demodulation module, carrier communication sending module, carrier communication receiver module and source coding module; Described tuner module is from the cable television network received signal, generates TS stream by behind tuning, the channel demodulation, then modulation signal is sent to the carrier communication sending module; Described carrier communication sending module outputs to electrical network with modulation signal, and transmits by electrical network; Described carrier communication receiver module receives modulation signal and this signal is carried out rectification from electrical network, is sent to the source coding module then; Described source coding module is sent to display device after the rectification signal is generated audio-video signal.
2. wireless set-top box according to claim 1 is characterized in that: described tuner module, channel demodulation module and carrier communication sending module are integrated.
3. wireless set-top box according to claim 1 is characterized in that: described carrier communication receiver module is installed in the display device.
4. wireless set-top box according to claim 1 is characterized in that: described carrier communication receiver module separates with display device.
5. wireless set-top box according to claim 4 is characterized in that, described carrier communication receiver module front end is provided with coupling circuit and signal pre-processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102332639A CN101917541A (en) | 2010-07-21 | 2010-07-21 | Wireless set-top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102332639A CN101917541A (en) | 2010-07-21 | 2010-07-21 | Wireless set-top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101917541A true CN101917541A (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102332639A Pending CN101917541A (en) | 2010-07-21 | 2010-07-21 | Wireless set-top box |
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| CN (1) | CN101917541A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891972A (en) * | 2011-07-18 | 2013-01-23 | 天津三星电子有限公司 | Online watching device for multiple televisions with single signal line |
| CN103841452A (en) * | 2012-11-27 | 2014-06-04 | 联想(北京)有限公司 | Data acquisition method, data transmitting method, television set and set top box |
| WO2017008595A1 (en) * | 2015-07-13 | 2017-01-19 | 乐视控股（北京）有限公司 | Method and device for broadcasting cable television program |
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| CN1805503A (en) * | 2006-01-25 | 2006-07-19 | 海信集团有限公司 | Method and apparatus of implementing point-to-multipoint wireless network interconnection for digital televisions |
| CN1874473A (en) * | 2006-06-28 | 2006-12-06 | 中国移动通信集团公司 | Network TV system |
| CN2907116Y (en) * | 2006-05-20 | 2007-05-30 | 华为技术有限公司 | Set-top box utilizing power line carrier for communication |
| CN201365297Y (en) * | 2009-02-23 | 2009-12-16 | 瞿雷 | Multichannel shared set-top box |
| CN201479299U (en) * | 2009-08-25 | 2010-05-19 | 深圳市同洲电子股份有限公司 | Coupler and radio and television network home system |
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2010
- 2010-07-21 CN CN2010102332639A patent/CN101917541A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805503A (en) * | 2006-01-25 | 2006-07-19 | 海信集团有限公司 | Method and apparatus of implementing point-to-multipoint wireless network interconnection for digital televisions |
| CN2907116Y (en) * | 2006-05-20 | 2007-05-30 | 华为技术有限公司 | Set-top box utilizing power line carrier for communication |
| CN1874473A (en) * | 2006-06-28 | 2006-12-06 | 中国移动通信集团公司 | Network TV system |
| CN201365297Y (en) * | 2009-02-23 | 2009-12-16 | 瞿雷 | Multichannel shared set-top box |
| CN201479299U (en) * | 2009-08-25 | 2010-05-19 | 深圳市同洲电子股份有限公司 | Coupler and radio and television network home system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891972A (en) * | 2011-07-18 | 2013-01-23 | 天津三星电子有限公司 | Online watching device for multiple televisions with single signal line |
| CN103841452A (en) * | 2012-11-27 | 2014-06-04 | 联想(北京)有限公司 | Data acquisition method, data transmitting method, television set and set top box |
| WO2017008595A1 (en) * | 2015-07-13 | 2017-01-19 | 乐视控股（北京）有限公司 | Method and device for broadcasting cable television program |
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Application publication date: 20101215 |