CN102832969A - EOC (Ethernet over Coax) mixer - Google Patents
EOC (Ethernet over Coax) mixer Download PDFInfo
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- CN102832969A CN102832969A CN2012103237607A CN201210323760A CN102832969A CN 102832969 A CN102832969 A CN 102832969A CN 2012103237607 A CN2012103237607 A CN 2012103237607A CN 201210323760 A CN201210323760 A CN 201210323760A CN 102832969 A CN102832969 A CN 102832969A
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Abstract
The invention discloses an EOC (Ethernet over Coax) mixer, which comprises a low-frequency signal interface, an AC60 power supply interface, a low-pass filter, a high-pass filter, an over-current switch, a first high-frequency isolating circuit, a CATV (Community Antenna Television) signal input interface and a mixed signal output interface, wherein the low-frequency signal interface is connected to the low-pass filter; the low-pass filter is connected to the mixed signal output interface; the CATV signal input interface is connected to the high-pass filter and the first high-frequency isolating circuit respectively; the high-pass filter is connected to the mixed signal output interface; the AC60 power supply interface is connected with an external power supply and is further connected to the first high-frequency isolating circuit; the first high-frequency isolating circuit is connected to the over-current switch; and the over-current switch is further connected to the mixed signal output interface. The EOC mixer is a mixer which can support 60V over-current signal turn-on and turn-off functions in broadcasting and TV lines.
Description
Technical field
The present invention relates to the communications field, particularly a kind of EOC blender.
Background technology
EOC (Ethernet over Coax; In coaxial cable, carry out the transmission of Ethernet data signal) be one of technology the most popular during two-way instantly net is transformed; Main flow exactly with ethernet signal through in coaxial cable, carrying out transfer of data after the ovennodulation; Its frequency does not take cable TV frequency band and cable TV frequency coexistence.It becomes the favorite in the two-way net renovation technique with simple, stable, safety, low cost and other advantages.
Signal mixer promptly is the EOC equipment servicing unit that has merged network signal and the transmission of broadcasting and TV CATV signal, and its development also has variform.A kind of blender of prior art was not with the electric work ability, and the typical case is like the blender on the EOC terminal equipment.The blender of another kind of prior art can provide AC60V to cross the electric work ability, is secondary amplifier power supply.
There is following problem in the EOC blender of prior art:
1, blender did not possess the AC60V equipment of electricity, can't be subordinate's amplifier power supply.
2, blender can be supplied power, but does not have switch, and power supply does not possess the cut-out function, if subordinate equipment did not support electricity then to need plug-in voltage isolator.
3, blender can be supplied power, but has only built-in fixing plug switch, and shell is not opened under the situation and can't be turn-offed or opening power, and is very inconvenient.
Summary of the invention
In order to solve the problems referred to above of prior art, be necessary to provide a kind of and can in the broadcasting and TV circuit, support 60V to cross the signal of telecommunication to open the blender with turn-off function.
The technical scheme that technical solution problem of the present invention provides is:
A kind of EOC blender; It comprises low frequency signal interface, AC60 power taking interface, low pass filter, high pass filter, crosses electric switch, the first high-frequency isolation circuit, CATV signal input interface and mixed signal output interface; The low frequency signal interface is connected to low pass filter; Low pass filter is connected to the mixed signal output interface, and the CATV signal input interface is connected to the high pass filter and the first high-frequency isolation circuit respectively, and high pass filter is connected to the mixed signal output interface; AC60 power taking interface is connected with the externally fed power supply; And further being connected to the first high-frequency isolation circuit, the first high-frequency isolation circuit was connected to electric switch, crossed electric switch and further was connected to the mixed signal output interface.
Wherein, further comprise the second high-frequency isolation circuit that was connected between electric switch and the mixed signal output interface.
Wherein, crossing electric switch is external toggle switch.
Wherein, the first high-frequency isolation circuit is made up of Pi type inductance and electric capacity.
Compared to prior art, the present invention crosses electric switch through external property and goes to turn-off and open the electric excessively of AC60V, need not open casing and remove to plug electric switch, also need not increase the extra electric spacer assembly of mistake at signal port for the isolated high-voltage electricity; Have advantages such as simple, practicality, miniaturization.
Description of drawings
Fig. 1 is the circuit diagram of EOC blender of the present invention.
Embodiment
As shown in Figure 1, EOC blender of the present invention comprises low frequency signal interface, AC60 power taking interface, low pass filter, high pass filter, crosses electric switch, the first high-frequency isolation circuit, the second high-frequency isolation circuit, CATV signal input interface and mixed signal output interface.The low frequency signal interface is connected with outside EOC local side signal plate, also is connected to low pass filter, and low pass filter is connected to the mixed signal output interface.The CATV signal input interface is connected to the high pass filter and the first high-frequency isolation circuit respectively, and high pass filter is connected to the mixed signal output interface.AC60 power taking interface is connected with the externally fed power supply, and further is connected to the first high-frequency isolation circuit.The first high-frequency isolation circuit was connected to electric switch, crossed electric switch and further was connected to the second high-frequency isolation circuit.The second high-frequency isolation circuit is connected to the mixed signal output interface.The mixed signal output interface is connected to outside amplifier and EOC terminal respectively through a selector switch.Outside amplifier further is connected to the EOC terminal.When the EOC terminal is near apart from EOC blender distance, do not need amplifier that mixed signal is amplified, so selector switch is connected directly to the EOC terminal, amplifier need not work, crosses electric switch and closes; When EOC terminal during apart from EOC blender distance, need amplifier that mixed signal is amplified, so selector switch is connected directly to amplifier, cross electric switch and open, the power supply of AC60V power supply pair amplifier.
The first high-frequency isolation circuit and the second high-frequency isolation circuit mainly are made up of Pi type inductance and electric capacity.The input of CATV signal is to allow band AC60V power supply, and the signal of high pass is the CATV signal, frequency range: 87MHZ～860MHZ; The signal of low pass is the EOC signal of communication, frequency range: 7MHZ～65MHZ.High frequency CATV signal and EOC signal of communication are respectively through arriving the mixed signal output interface behind the High frequency filter with behind the low pass filter.
When CATV signal input interface band AC60V supplies power; Signal separated with the AC60V power supply signal after the CATV signal of band AC60V voltage signal was come in from the CATV signal input interface; The CATV signal from behind the high-pass filtering circuit to the mixed signal output interface; Behind the CATV signal of AC60V power supply signal through the first high-frequency isolation circuit and the second high-frequency isolation circuit filtering high frequency, export to the amplifier of next stage from the mixed signal output interface and supply power.Whether cross electric switch decision AC60V power supply signal through of the amplifier transmission of the second high-frequency isolation circuit toward subordinate.
When the CATV signal input interface is not with the AC60V power supply; The AC60V voltage signal is obtained from the externally fed power supply by AC60V power taking interface; The AC60V power supply signal through the first high-frequency isolation circuit and the second high-frequency isolation circuit after, export to the amplifier of next stage from the mixed signal output interface and supply power.Whether cross electric switch decision AC60V power supply signal transmits toward subordinate's amplifier through the second high-frequency isolation circuit.
Cross electric switch decision AC60V power supply signal whether toward the amplifier transmission of subordinate, cross electric switch and open, then the AC60V power supply signal is again through the first high-frequency isolation circuit and the second high-frequency isolation circuit, after arrive the mixed signal output interface again.
The mixed signal output interface has mixed CATV signal, EOC low frequency communication signal, AC60V power supply toward subordinate's transmission, through arriving the user of family behind amplifier or the various branch distributors.
Amplifier adopts the power supply of AC60V power supply, and the domestic consumer separates TV signal through the EOC terminal and supplies the PC online to television set and ethernet communication signal, and signal of communication is two-way.When in the middle of subordinate's equipment the CATV signal amplifier being arranged, the power supply of AC60V power supply must be arranged on the circuit.
Crossing electric switch takes external toggle switch to realize the break-make of AC60V power supply.
Compared with prior art, the present invention crosses electric switch through external property and goes to turn-off and open the electric excessively of AC60V, need not open casing and remove to plug electric switch, also need not increase the extra electric spacer assembly of mistake at signal port for the isolated high-voltage electricity; Have advantages such as simple, practicality, miniaturization.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (4)
1. EOC blender; It is characterized in that; Comprise low frequency signal interface, AC60 power taking interface, low pass filter, high pass filter, cross electric switch, the first high-frequency isolation circuit, CATV signal input interface and mixed signal output interface, the low frequency signal interface is connected to low pass filter, and low pass filter is connected to the mixed signal output interface; The CATV signal input interface is connected to the high pass filter and the first high-frequency isolation circuit respectively; High pass filter is connected to the mixed signal output interface, and AC60 power taking interface is connected with the externally fed power supply, and further is connected to the first high-frequency isolation circuit; The first high-frequency isolation circuit was connected to electric switch, crossed electric switch and further was connected to the mixed signal output interface.
2. EOC blender according to claim 1 is characterized in that, further comprises the second high-frequency isolation circuit that was connected between electric switch and the mixed signal output interface.
3. EOC blender according to claim 1 is characterized in that, crossing electric switch is external toggle switch.
4. EOC blender according to claim 1 is characterized in that, the first high-frequency isolation circuit is made up of Pi type inductance and electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103237607A CN102832969A (en) | 2012-09-04 | 2012-09-04 | EOC (Ethernet over Coax) mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103237607A CN102832969A (en) | 2012-09-04 | 2012-09-04 | EOC (Ethernet over Coax) mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102832969A true CN102832969A (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103237607A Pending CN102832969A (en) | 2012-09-04 | 2012-09-04 | EOC (Ethernet over Coax) mixer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911307A (en) * | 2017-02-22 | 2017-06-30 | 新华三技术有限公司 | Ethernet transmits eoc signal frequency mixer |
| CN113411534A (en) * | 2021-06-15 | 2021-09-17 | 杭州海康机器人技术有限公司 | Power supply input and output device and video transmission system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3597464B2 (en) * | 2000-12-19 | 2004-12-08 | Ｕｒｏ電子工業株式会社 | Main line input / output circuit in CATV signal splitter / distributor |
| CN1829360A (en) * | 2005-03-05 | 2006-09-06 | 乐金电子(中国)研究开发中心有限公司 | Gsm and CDMA mode conversion device |
| CN101127863A (en) * | 2007-09-26 | 2008-02-20 | 杭州华三通信技术有限公司 | An interface device |
| CN201222611Y (en) * | 2008-05-19 | 2009-04-15 | 长沙市雷立行电子科技有限公司 | Lightning protection box for power supply |
| CN202406214U (en) * | 2011-11-18 | 2012-08-29 | 成都康特电子高新科技有限责任公司 | Three net fusion based internal feed power supply broadband data access branch front end equipment |
-
2012
- 2012-09-04 CN CN2012103237607A patent/CN102832969A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3597464B2 (en) * | 2000-12-19 | 2004-12-08 | Ｕｒｏ電子工業株式会社 | Main line input / output circuit in CATV signal splitter / distributor |
| CN1829360A (en) * | 2005-03-05 | 2006-09-06 | 乐金电子(中国)研究开发中心有限公司 | Gsm and CDMA mode conversion device |
| CN101127863A (en) * | 2007-09-26 | 2008-02-20 | 杭州华三通信技术有限公司 | An interface device |
| CN201222611Y (en) * | 2008-05-19 | 2009-04-15 | 长沙市雷立行电子科技有限公司 | Lightning protection box for power supply |
| CN202406214U (en) * | 2011-11-18 | 2012-08-29 | 成都康特电子高新科技有限责任公司 | Three net fusion based internal feed power supply broadband data access branch front end equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911307A (en) * | 2017-02-22 | 2017-06-30 | 新华三技术有限公司 | Ethernet transmits eoc signal frequency mixer |
| CN113411534A (en) * | 2021-06-15 | 2021-09-17 | 杭州海康机器人技术有限公司 | Power supply input and output device and video transmission system |
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Addressee: Shenzhen Allwins Technology Corporation Document name: Notification of an Office Action |
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Application publication date: 20121219 |