CN101651771A - Electronic device supporting Multimedia over Coax Alliance standards - Google Patents
Electronic device supporting Multimedia over Coax Alliance standards Download PDFInfo
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- CN101651771A CN101651771A CN200810210918A CN200810210918A CN101651771A CN 101651771 A CN101651771 A CN 101651771A CN 200810210918 A CN200810210918 A CN 200810210918A CN 200810210918 A CN200810210918 A CN 200810210918A CN 101651771 A CN101651771 A CN 101651771A
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Abstract
The invention discloses an electronic device supporting Multimedia over Coax Alliance standards, and the electronic device is applicable to being coupled with a coaxial cable. The electronic device comprises an input terminal, a post-processing unit and a band-pass filter. The input terminal is coupled with the coaxial cable. The band-pass filter is coupled between the input terminal and the post-processing unit, the input terminal receives an input signal, the band-pass filter causes a plurality of television channel signals within a preset frequency to be passed and sent to the post-processing unit for processing. The band-pass filter rejects a Multimedia over Coax Alliance standard system signal to enter the post-processing unit. The electronic device can allow a plurality of televisionchannel signals within a preset frequency range to pass through, and reject high-power system signals between 1125MHz and 1500MHz of the Multimedia over Coax Alliance standards, thus being capable ofimproving watching quality of television channel signals.
Description
Technical field
The present invention relates to a kind of electronic installation, relate in particular to a kind of electronic installation of supporting multimedia over Coax Alliance standards.
Background technology
The Ethernet cable is the main wiring solution of digital home always, utilizes it can transmit audio frequency, video and numerical data at home between each room, even connects whole dwelling house audio system to all facilities such as family's automation and safety systems.Yet Ethernet is not optimal selection, because the Ethernet cable is installed in the dwelling house of having built, the hardware configuration that needs to destroy building just can install.
Therefore, just there is the dealer to begin to create the new mode of digital home's infrastructure, they mainly are to utilize the circuit that all exists in each family almost to put forward solution, and for example: utilizing is electric wire or the coaxial wire that new-type building or old building all can have.
According to the difference of selected transmission medium, this new-type digital home's online technology mainly is to be divided into family's power line network (hereinafter to be referred as HomePlugAV) and two kinds of technology of coaxial cable multimedia network (hereinafter to be referred as MoCA).These two kinds of technology are formulated and are promoted by power line networking alliance (HomePlugPowerline Alliance) of family and two kinds of different technical organizations of multimedia over Coax Alliance (Multimedia over Coax Alliance).
The MoCA standard can provide stable high pass throughput rate, high-quality net connection to the family that has various video equipments, and not influence miscellaneous equipment or the network that has adopted by coaxial cable.The MoCA standard mainly contains following advantage: 1, do not need to change the layout and the wiring of existing cable television network, can improve data transmission rate by the very big width of cloth; 2, maximum transmission rate can reach 270Mbps (bps) in each 50M Hz channel, and the aggregate date rate of 15 channels can reach 4G bps (bps); 3, do not influence original vision signal, with cable television network and deposit; And 4, perfectly service quality (QoS), safe, reliability is high and easy for installation.
See also Fig. 1, it is depicted as the schematic diagram of the electronic installation of present support MoCA standard.Above-mentioned electronic installation 1 comprises input 11, high pass filter 12 and tuner 13.In general, there is the high-frequency operation signal in the MoCA system, and this high-frequency operation signal normally is higher than the MoCA high power signals of 50db mv.Yet above-mentioned MoCA high power signals can transfer to input 11 by coaxial cable, and then has a strong impact on the operation of tuner 13 or amplifier, and has influence on the reception of digital television signal.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of electronic installation of supporting multimedia over Coax Alliance standards (MoCA), to improve the defective of prior art.
The present invention proposes a kind of electronic installation of supporting multimedia over Coax Alliance standards.Above-mentioned electronic installation is suitable for coupling coaxial cable.Electronic installation comprises input, back level processing unit and band pass filter.Input is in order to couple coaxial cable.Band pass filter is coupled between input and the back level processing unit, and receives an input signal by input.Input signal comprises a plurality of TV channel signal and a coaxial cable multimedia alliance modular system signal.Band pass filter makes a plurality of TV channel signal in the predeterminated frequency scope pass through, and handles to be sent to back level processing unit.Band pass filter is also got rid of together shaft cable multimedia alliance modular system signal and is entered back level processing unit, wherein the width of predeterminated frequency scope is at least 917MHz, and the frequency of multimedia over Coax Alliance standards system signal is between 1125MHz to 1500MHz.
Beneficial effect of the present invention is, electronic installation provided by the present invention can make a plurality of TV channel signal in the predeterminated frequency scope pass through, and the high power system signal of eliminating multimedia over Coax Alliance standards between 1125M Hz to 1500M Hz, thus, can improve the watching quality of TV channel signal.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 is a circuit diagram of supporting the electronic installation of multimedia over Coax Alliance standards at present.
Fig. 2 is for supporting the circuit diagram of the electronic installation of multimedia over Coax Alliance standards according to an embodiment of the invention.
Fig. 3 is for supporting the circuit diagram of the electronic installation of multimedia over Coax Alliance standards according to another embodiment of the present invention.
Embodiment
Fig. 2 is the circuit diagram of electronic installation according to an embodiment of the invention.In the present embodiment, electronic installation 2 can be digital TV set-top box (Set-box) or cable modem (Cable Modem), it can couple coaxial cable 20, with the multimedia messages of receiving remote system by coaxial cable 20 transmission, wherein multimedia messages can comprise digital television signal, voice signal and network data etc.
As shown in Figure 2, the electronic installation 2 that present embodiment provided comprises input 21, band pass filter (Band Pass Filter Module) 22 and back level processing unit 23.Input 21 couples coaxial cable 20, and band pass filter 22 is coupled between input 21 and the back level processing unit 23, and wherein level processing unit 23 in back is the back level of band pass filter 22.
In the present embodiment, input 21 is a coaxial cable connector, in order to connect coaxial cable 20.In the present embodiment, back level processing unit 23 is an amplifier, and in other embodiments, back level processing unit 23 can be tuner or other is in order to receive the electronic installation of cable TV signal or digital television signal.
In the present embodiment, band pass filter 22 usefulness are so that the signal in the predeterminated frequency scope (PredeterminedFrequency Range) passes through band pass filter 22.The width of above-mentioned predeterminated frequency scope is at least 917MHz, and for example: the predeterminated frequency scope is from 85M Hz to 1002M Hz.In other embodiments, the predeterminated frequency scope can be 54M Hz to 1002M Hz, and the demand of the visual cable system of its frequency range and the frequency range of being adjusted band pass filter 22 change.
Above-mentioned band pass filter 22 is by input 21 receiving inputted signals, and wherein input signal comprises a plurality of TV channel signal and MoCA system signal.In the present embodiment, the power of MoCA system signal is 50db mv, and the frequency of MoCA system signal is between 1125MHz to 1500MHz, and the power of each TV channel signal is 15db mv, and the TV signal of each channel is distributed between the frequency 54MHz to 860MHz.
The band pass filter 22 that present embodiment provided has the feature that a broadband signal passes through, so a plurality of TV channel signal in the predeterminated frequency scope can enter back level processing unit 23 by band pass filter 22, and the signal outside the predeterminated frequency scope, for example: the high power MoCA system signal between 1125MHz to 1500MHz then can be by filtering.Thus, for example just can not produce the distorted signals problem because of receiving high power MoCA system signal for the back level processing unit 23 of amplifier.
For instance, amplifier is that the television channel at 15db mv carries out signal and amplifies, and amplifies if amplifier receives the high power MoCA system signal of 50db mv, then can cause whole distorted signals, and then influence the subsequent treatment of electronic installation 2.And the band pass filter 22 that present embodiment provided just can address the above problem, but makes for example be back level processing unit 23 operate as normal of amplifier.
Fig. 3 is for supporting the circuit diagram of the electronic installation of multimedia over Coax Alliance standards according to another embodiment of the present invention.The electronic installation 3 that present embodiment provided comprises input 31, band pass filter 32 and tuner 33.Each element of present embodiment is similar to the above embodiments, about the annexation and the basic function explanation of those elements, no longer repeat specification.
In the present embodiment, tuner 33 is the back level processing units as band pass filter 32, and tuner 33 also comprises band pass filter 331.Band pass filter 32 makes a plurality of TV channel signal pass through, and be sent to tuner 33, band pass filter 331 in the tuner 33 can be used to select one of them in these digital television channel signal, makes the digital television channel signal of 33 pairs of selections of tuner handle.
As from the foregoing, electronic installation that the embodiment of the invention provides can make a plurality of digital television channel signal in the predeterminated frequency scope pass through simultaneously, and eliminating multimedia over Coax Alliance standards system signal, can prevent of the interference of multimedia over Coax Alliance standards system signal, improve the come on TV quality of channel signals transmission of cable digital television channel signal.
The above is preferred embodiment of the present invention only, is not that the present invention is done any pro forma restriction.Though the present invention with preferred embodiment openly as above, right its is not in order to limit the present invention, any those of ordinary skills, without departing from the spirit and scope of the present invention, when utilizing above-mentioned disclosed technology contents to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification, equivalent variations and modification according to technical spirit of the present invention is done above fact Example all still belong in the scope of technical solution of the present invention.Therefore protection scope of the present invention is when being as the criterion with the determined protection range of claim.
Claims (6)
1. an electronic installation of supporting multimedia over Coax Alliance standards is suitable for coupling coaxial cable, it is characterized in that, above-mentioned electronic installation comprises:
Input couples above-mentioned coaxial cable;
Back level processing unit; And
Bandpass filter; Be coupled between above-mentioned input and the above-mentioned rear level processing unit; And above-mentioned bandpass filter receives input signal by above-mentioned input; Above-mentioned input signal comprises a plurality of TV channel signals and multimedia over Coax Alliance standards system signal; Above-mentioned bandpass filter is used so that above-mentioned these TV channel signals in the predeterminated frequency scope pass through; Process to be sent to above-mentioned rear level processing unit; And above-mentioned bandpass filter is got rid of above-mentioned multimedia over Coax Alliance standards system signal and is entered above-mentioned rear level processing unit
The width of wherein above-mentioned predeterminated frequency scope is at least 917MHz, and the frequency of above-mentioned multimedia over Coax Alliance standards system signal is between 1125MHz to 1500MHz.
2. electronic installation according to claim 1 is characterized in that, above-mentioned predeterminated frequency scope is from 54MHz to 1002MHz or from 85MHz to 1002MHz.
3. electronic installation according to claim 1 is characterized in that, the quantity of above-mentioned these TV channel signal is 13.
4. electronic installation according to claim 1 is characterized in that, above-mentioned back level processing unit is tuner or amplifier.
5. electronic installation according to claim 4, it is characterized in that, when an above-mentioned back level processing unit is above-mentioned tuner, above-mentioned tuner also comprises band pass filter, in order to select one of them in above-mentioned these TV channel signal, make above-mentioned tuner handle to the TV channel signal of above-mentioned selection.
6. electronic installation according to claim 1 is characterized in that, above-mentioned electronic installation is digital TV set-top box or cable modem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102109183A CN101651771B (en) | 2008-08-12 | 2008-08-12 | Electronic device supporting Multimedia over Coax Alliance standards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102109183A CN101651771B (en) | 2008-08-12 | 2008-08-12 | Electronic device supporting Multimedia over Coax Alliance standards |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101651771A true CN101651771A (en) | 2010-02-17 |
| CN101651771B CN101651771B (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102109183A Active CN101651771B (en) | 2008-08-12 | 2008-08-12 | Electronic device supporting Multimedia over Coax Alliance standards |
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| CN (1) | CN101651771B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031878A (en) * | 1997-02-28 | 2000-02-29 | Maxim Integrated Products, Inc. | Direct-conversion tuner integrated circuit for direct broadcast satellite television |
| CN2514590Y (en) * | 2001-11-29 | 2002-10-02 | 向祖璧 | Data television signal mixer |
| CN201018491Y (en) * | 2006-06-27 | 2008-02-06 | 上海未来宽带技术及应用工程研究中心有限公司 | Connecting structure for providing high speed broadband business in coaxial cable |
| CN101197852A (en) * | 2006-12-05 | 2008-06-11 | 卓智电子股份有限公司 | High-isolation multi-plexer circuit apparatus used for coaxial cable multimedia circuit |
| DE202007017577U1 (en) * | 2007-12-17 | 2008-03-13 | Soontai Tech Co., Ltd., Yung Kang City | Modulated wave filter |
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2008
- 2008-08-12 CN CN2008102109183A patent/CN101651771B/en active Active
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| CN101651771B (en) | 2012-04-18 |
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Effective date of registration: 20140116 Address after: Taipei City, Taiwan, China Patentee after: Pegatron Corporation Address before: Taipei City, Taiwan, China Patentee before: Pegatron Corporation |