CN103166816A - Home network system based on power line communication (PLC) - Google Patents
Home network system based on power line communication (PLC) Download PDFInfo
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- CN103166816A CN103166816A CN201210478921XA CN201210478921A CN103166816A CN 103166816 A CN103166816 A CN 103166816A CN 201210478921X A CN201210478921X A CN 201210478921XA CN 201210478921 A CN201210478921 A CN 201210478921A CN 103166816 A CN103166816 A CN 103166816A
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- television set
- home gateway
- demodulation module
- power modulation
- modulation demodulation
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Abstract
The invention provides a home network system based on power line communication (PLC). The home network system based on the PLC comprises a home gateway and at least one television. The home gateway includes at least one low noise block (LNB), a main processor and a first power modulation and demodulation module. The television comprises a conditional access module, a processor and a second power modulation and demodulation module. According to the home network system based on the PLC, the functions of program selecting, demodulating, channel decoding and the like are integrated in the home gateway, and the functions of descrambling, message source decoding and the like are configured in the television. Therefore, the fact that the section between the home gateway and the television is a single program transferring section is guaranteed. Only a video circuit is arranged on the section, the home network system based on the PLC can enable the number of the circuits on the section between the home gateway and the television to be as small as possible, and the transmission rate through the section to be as low as possible, and therefore transmission cost is reduced.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of domestic network system based on power line communication.
Background technology
Generally there is multiple TV set in the average family of present present situation, from the user point of view, and one, be reluctant to mean every television set and purchase a set-top box, spend too highly, they are two years old, every television set need to draw a camera cable, and the position fixes, trouble and inconvenient.
In order to address this problem, at present, a kind of scheme that merges set-top box is arisen at the historic moment, but in the research and practice process to prior art, the present inventor finds, when multiple TV set is connected with a unit mahine top box, if being connected between HDTV and high definition set top box because its transmission rate can reach 13Gbps, can cause the Cost Problems of ultrahigh speed transmission and interface standard problem thereof and 13Gbps transmission.
Summary of the invention
The embodiment of the present invention provides a kind of domestic network system based on power line communication, can realize the centralized control to the many TVs of household internal, has guaranteed the low transmission rate between television set and home gateway, thereby has reduced transmission cost.
A kind of domestic network system based on power line communication is characterized in that, comprising: home gateway and at least one television set,
Described home gateway comprises at least one tuner, primary processor and power modulation demodulation module one; Shown in television set comprise Conditional Access Module, processor and power modulation demodulation module two; Described home gateway with described television set by power modulation demodulation module one and power modulation demodulation module two, intercom mutually based on the power line communication network in family;
When TV reception, the processor of television set one sends to described home gateway with programme selection signal, described programme selection signal carries identification information, and described identification information is used for indicating the television set that sends described programme selection signal and user and wants the programme information watched; According to described identification information, the primary processor of described home gateway selects the high frequency corresponding with described television set one first, described high frequency is first carries out channel-decoding and demodulation according to described programme selection signal, and the program stream of described primary processor after with the first processing of described high frequency sends to described television set one; The processor of described television set one carries out descrambling according to the descrambling information that described Conditional Access Module transmits to the program stream that described home gateway sends, program stream after descrambling is carried out compression coding, source coding, be reduced into audio-video signal and export on described television set.
Domestic network system based on power line communication provided by the invention, the functions such as program selection, demodulation, channel-decoding are placed in home gateway, with functional configuration such as descrambling, source codings in television set, thereby guaranteed that the cross section between home gateway and television set is that single programs is transmitted the cross section, only has a video loop on the cross section, the present invention can make on cross section between home gateway and television set the loop few as much as possible, thereby cause by the transmission rate in cross section lowly as far as possible, reduce transmission cost.
Description of drawings
Fig. 1 is based on the structural representation of the domestic network system of power line communication in the embodiment of the present invention;
Fig. 2 is based on the Digital Transmission process schematic diagram of the anolog TV signals of the domestic network system of power line communication in the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of domestic network system based on power line communication, as shown in Figure 1, below is elaborated.
The domestic network system based on power line communication that the embodiment of the present invention provides comprises: home gateway 101 and at least one television set 102.
Need to prove, the 26S Proteasome Structure and Function of the power modulation demodulation module 2 1023 in the power modulation demodulation module 1 in home gateway 101 and television set 102 is the same, is all be used to the network function of realizing power line communication.Home gateway 101 with all television set 102 by power modulation demodulation module 1 and power modulation demodulation module 2 1023, intercom mutually based on the power line communication network in family.Optionally, home gateway 101 with all television sets 102 by power modulation demodulation module 1 and power modulation demodulation module 2 1023, intercom mutually based on the communication mode of the power line communication network in family with time division multiplexing or statistic multiplexing.Concrete, home gateway 101 and all television sets 102 all can be connected on the power line communication network bus, thereby utilize the power line communication network characteristics easily that connect up, realization can be moved the configuration multiple TV set.
Tuner 1011 can be identical with the quantity of television set 102, and the channel selection operation of a television set 102 can be fixed by a tuner 1011 and process.
The below will be introduced the workflow based on the domestic network system of power line communication.Need to prove, in this article, television set one and tuner one do not refer in particular to a certain television set and tuner.
When TV reception, the user can send programme selection signal by the remote controller of television set one, be used for to select oneself to want the TV seen, this programme selection signal carries identification information, identification information can be used in and indicates the television set that sends this programme selection signal and user and want the programme information watched, and then the processor of television set one can send to home gateway with this programme selection signal.
The identification information that carries according to the programme selection signal that receives, the primary processor of home gateway selects the high frequency corresponding with television set one first, high frequency is first carries out channel-decoding and demodulation according to programme selection signal, and the program stream of primary processor after with the first processing of high frequency sends to television set one.
The processor of television set one is according to condition reception (CA, Condition Acception) descrambling information that transmits of module carries out descrambling to the program stream that home gateway sends, program stream after descrambling is carried out compression coding, source coding, be reduced into original audio-video signal and export on television set one.
Optionally, primary processor 1012 can be placed on the mainboard of home gateway 101, and the connecting interface between the mainboard of each tuner 1011 and home gateway 101 is USB2.0.
Referring to Fig. 2, based on the domestic network system based on power line communication that the present embodiment provides, the transmitting procedure of analog signal is specific as follows:
go out by the digital camera lens shooting, the audio-video signal of analog signaling passes through digital camera, television operating center, through a series of information source coding, compressed encoding, time division multiplexing, the CA scrambling, time division multiplexing, chnnel coding, Channel Modulation, the process of frequency division multiplexing, convert digital signal to and enter into home gateway by analogue transmission, home gateway is selected the tuner corresponding with television set, through a series of frequency division multiplexing, channel demodulation, channel-decoding, digital signal after time division multiplexed process output is processed enters into television set, at inside television process CA descrambling, time division multiplexing, compression coding, the source coding process, the audio-video signal that is reduced into analog signaling is exported on television display screen.
According to the transmitting procedure of analog signal, can mark off several standards and transmit the cross section, as shown in Figure 2, be specially section A to cross section G, totally 8 cross sections, the cross section E transmission between home gateway and television set be scrambled number compressed video transport stream, be specially:
(1) if television set is Standard Definition Television, E place, cross section only has a loop, and transmission rate is 4Mbps.
(2) if television set is HDTV (High-Definition Television), E place, cross section only has a loop, and transmission rate is 8Mbps.
the domestic network system based on power line communication that the embodiment of the present invention provides, cross section between home gateway and television set is made as cross section E, namely fix between CA descrambling and time division multiplexing, realized program is selected, demodulation, the channel-decoding function is placed in home gateway, with descrambling, the source coding functional configuration is in television set, guaranteed that the cross section between home gateway and television set is that single programs is transmitted the cross section, only has a video loop on the cross section, the embodiment of the present invention can make on cross section between home gateway and television set the loop few as much as possible, thereby cause by the transmission rate in cross section low as far as possible, reduce transmission cost.
Claims (3)
1. the domestic network system based on power line communication, is characterized in that, comprising: home gateway and at least one television set,
Described home gateway comprises at least one tuner, primary processor and power modulation demodulation module one; Shown in television set comprise condition reception (CA) module, processor and power modulation demodulation module two; Described home gateway with described television set by power modulation demodulation module one and power modulation demodulation module two, intercom mutually based on the power line communication network in family;
When TV reception, the processor of television set one sends to described home gateway with programme selection signal, described programme selection signal carries identification information, and described identification information is used for indicating the television set that sends described programme selection signal and user and wants the programme information watched; According to described identification information, the primary processor of described home gateway selects the high frequency corresponding with described television set one first, described high frequency is first carries out channel-decoding and demodulation according to described programme selection signal, and the program stream of described primary processor after with the first processing of described high frequency sends to described television set one; The processor of described television set one carries out descrambling according to the descrambling information that described Conditional Access Module transmits to the program stream that described home gateway sends, program stream after descrambling is carried out compression coding, source coding, be reduced into audio-video signal and export on described television set one.
2. domestic network system according to claim 1, is characterized in that,
Described home gateway, is specially by power modulation demodulation module one and power modulation demodulation module two, intercom mutually based on the power line communication network in family with described television set:
Described home gateway with described television set by power modulation demodulation module one and power modulation demodulation module two, intercom mutually based on the communication mode of the power line communication network in family with statistic multiplexing.
3. domestic network system according to claim 1, is characterized in that,
Described home gateway, is specially by power modulation demodulation module one and power modulation demodulation module two, intercom mutually based on the power line communication network in family with described television set:
Described home gateway with described television set by power modulation demodulation module one and power modulation demodulation module two, intercom mutually with time-multiplexed communication mode based on the power line communication network in family.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478921XA CN103166816A (en) | 2012-11-22 | 2012-11-22 | Home network system based on power line communication (PLC) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210478921XA CN103166816A (en) | 2012-11-22 | 2012-11-22 | Home network system based on power line communication (PLC) |
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| Publication Number | Publication Date |
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| CN103166816A true CN103166816A (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210478921XA Pending CN103166816A (en) | 2012-11-22 | 2012-11-22 | Home network system based on power line communication (PLC) |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977292A (en) * | 2010-11-18 | 2011-02-16 | 广州广联数字家庭产业技术研究院 | Power carrier-based home digital television system and multi-television channel selection method |
| CN102469348A (en) * | 2010-11-19 | 2012-05-23 | 中兴通讯股份有限公司 | Method for controlling IPTV programs and home gateway |
| CN202949445U (en) * | 2012-11-22 | 2013-05-22 | 广东广联电子科技有限公司 | Home network system based on power line communication |
-
2012
- 2012-11-22 CN CN201210478921XA patent/CN103166816A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977292A (en) * | 2010-11-18 | 2011-02-16 | 广州广联数字家庭产业技术研究院 | Power carrier-based home digital television system and multi-television channel selection method |
| CN102469348A (en) * | 2010-11-19 | 2012-05-23 | 中兴通讯股份有限公司 | Method for controlling IPTV programs and home gateway |
| CN202949445U (en) * | 2012-11-22 | 2013-05-22 | 广东广联电子科技有限公司 | Home network system based on power line communication |
Non-Patent Citations (1)
| Title |
|---|
| 广州广联数字家庭产业技术研究院: "标准型家庭网络和多业务平台总体概要设计", 《电视技术》 * |
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Application publication date: 20130619 |