CN101500124A - Method for transmitting WLAN signal in wired television system and passive network bridge - Google Patents

Abstract

The invention discloses a method for transmitting WLAN signals in a cable television system and a passive network bridge, wherein, the method comprises the steps of receiving the mixed signals of power supply signals, WLAN signals and television signals transmitted by a local terminal, separating the mixed signals into the power supply signals, the WLAN signals and the television signals, synthesizing the power supply signals and the television signals obtained by separation, inputting the synthesized signals into a cable television amplifier, carrying out amplification treatment to the television signals by the television amplifier, separating the synthesized signals of the power supply signals and the amplified television signals into the power supply signals and the amplified television signals, and synthesizing the WLAN signals and the amplified television signals into high frequency signals which are synthesized with the power supply signals and then output to the next level; and the passive network bridge comprises a power supply and high frequency signal separation module, a first duplex module, a power supply and television signal synthesis module, a second duplex module, a power supply and high frequency signal synthesis module and a power supply and television signal separation module.

Description

The method of transmitting WLAN signal and passive network bridge in cable television system

Technical field

The present invention relates to network equipment field, relate in particular to a kind of in cable television system the method and the passive network bridge of transmitting WLAN signal.

Background technology

CATV of the prior art (Community Antenna Television, cable TV) amplifier is a kind of unidirectional amplifier, see also Fig. 1, this figure is the structured flowchart of CATV amplifier in the prior art, it mainly comprises power supply and TV signal separation module, the unidirectional amplification module of TV signal, power transfer module and power supply and TV signal synthesis module, its concrete course of work is as follows: AC power and TV composite signal are input in power supply and the TV signal separation module, after separating, AC power and TV signal are exported respectively from the different port of power supply and TV signal separation module, wherein AC power is input to respectively in power transfer module and power supply and the TV signal synthesis module, TV signal is imported in the unidirectional amplification module of TV signal, AC power is used for to the unidirectional amplification module power supply of TV signal be converted into DC power supply in power transfer module after, TV signal is amplified into power supply and TV signal synthesis module through the unidirectional amplification module of TV signal, mixes back output with AC power.

WLAN (Wireless LocalAero Network, WLAN (wireless local area network)) is a kind of wireless communication technology of maturation, prepare to be applied to the bidirectional rebuilding of CATV system at present, its objective is by existing C ATV coaxial cable and transmit the WLAN signal, under the situation of not carrying out rewiring, realize the bidirectional rebuilding of CATV system.Yet WLAN signal two-way in the prior art can't pass through the CATV amplifier, thereby causes the bidirectional rebuilding of CATV system to finish.

Summary of the invention

The invention provides a kind of in cable television system the method and the passive network bridge of transmitting WLAN signal, can't be in order to solve WLAN signal two-way in the prior art by the problem of the CATV amplifier in the CATV system.

For addressing the above problem, the invention provides a kind of in cable television system the method for transmitting WLAN signal, comprise step:

The mixed signal of power supply, WLAN signal and TV signal that A, reception local side send is separated into power supply and high-frequency signal, then described high-frequency signal is separated into WLAN signal and TV signal;

B, previous step is separated in the power supply and the synthetic back input of TV signal wired TV amplifier that obtains in rapid, TV signal is wherein carried out processing and amplifying by wired TV amplifier;

C, with described power supply with amplify after the composite signal of TV signal be separated into power supply and amplify after TV signal;

D, the TV signal of described WLAN signal and previous step being separated in rapid after the amplification that obtains synthesize high-frequency signal, then this high-frequency signal and power supply are synthesized and export to next stage.

Described power supply is the AC power of 60V.

Corresponding to said method of the present invention, the present invention and then proposed a kind of passive network bridge, comprise power supply and high-frequency signal separation module, first duplex module, power supply and TV signal synthesis module, second duplex module, power supply and high-frequency signal synthesis module, power supply and TV signal separation module, wherein

Power supply and high-frequency signal separation module, be used to receive the mixed signal of power supply, WLAN signal and TV signal that local side sends, be separated into power supply and high-frequency signal, power supply is imported power supply and TV signal synthesis module, high-frequency signal is imported first duplex module;

First duplex module, the high-frequency signal that is used for receiving is separated into WLAN signal and TV signal, and the WLAN signal is imported second duplex module, and TV signal is imported power supply and TV signal synthesis module;

Power supply and TV signal synthesis module, wired TV amplifier is imported in the power supply and the synthetic back of TV signal that are used for receiving, after wired TV amplifier carries out processing and amplifying to TV signal wherein, with the composite signal input power supply and the TV signal separation module of the TV signal after power supply and the amplification;

Power supply and TV signal separation module, the composite signal of the TV signal after being used for the power supply that will receive and amplifying be separated into power supply and amplify after TV signal, power supply is imported power supply and high-frequency signal synthesis module, the TV signal after amplifying is imported second duplex module;

Second duplex module is used for WLAN signal and synthetic back input power supply of the TV signal after the amplification and the high-frequency signal synthesis module that will receive;

Power supply and high-frequency signal synthesis module, it is synthetic and export to next stage to be used for the high-frequency signal that will receive and power supply.

Described power supply and high-frequency signal synthesis module also are used to receive the WLAN signal that next stage sends, and it is sent to local side by second duplex module, first duplex module and power supply and high-frequency signal separation module successively.

Described passive network bridge to the decay of TV signal less than 5DB.

Described passive network bridge to the decay of WLAN signal less than 6DB.

Described power supply is the AC power of 60V.

Beneficial effect of the present invention is as follows:

The present invention is by separating and synthesize with the TV signal the WLAN signal that transmits in same cable, reached at the WLAN path TV signal has been carried out filtering, the WLAN signal is carried out the purpose of filtering at the TV path, eliminate influencing each other of two kinds of signals, realized the transmitted in both directions of WLAN signal in having the cable of wired TV amplifier.

Description of drawings

Fig. 1 is the structured flowchart of CATV amplifier in the prior art;

Fig. 2 be of the present invention in cable television system the flow chart of the method for transmitting WLAN signal;

Fig. 3 is the structured flowchart of passive network bridge of the present invention.

Embodiment

Below in conjunction with each accompanying drawing specific implementation process of the present invention is further described in detail.

See also Fig. 2, this figure be of the present invention in cable television system the flow chart of the method for transmitting WLAN signal, its main implementation procedure is as follows:

The mixed signal of power supply, WLAN signal and TV signal thatstep 10, reception local side send is separated into power supply and high-frequency signal, and described power supply is the AC power of 60V;

Step 11, described high-frequency signal is separated into WLAN signal and TV signal;

Step 12, with separating in thestep 10 in the synthetic back input of the TV signal wired TV amplifier that obtains in the power supply obtain and thestep 11, by wired TV amplifier TV signal is wherein carried out processing and amplifying;

Step 13, with described power supply with amplify after the composite signal of TV signal be separated into power supply and amplify after TV signal;

Step 14, the TV signal of separating in described WLAN signal and thestep 13 after the amplification that obtains is synthesized high-frequency signal, then that this high-frequency signal and power supply is synthetic and export to next stage.

Corresponding to said method of the present invention, the present invention and then proposed a kind of passive network bridge, see also Fig. 3, this figure is the structured flowchart of passive network bridge of the present invention, it mainly comprises power supply and high-frequency signal separation module, first duplex module, power supply and TV signal synthesis module, second duplex module, power supply and high-frequency signal synthesis module, power supply and TV signal separation module, wherein

Power supply and high-frequency signal separation module, be used to receive the mixed signal of power supply, WLAN signal and TV signal that local side sends, be separated into power supply and high-frequency signal, described power supply is the AC power of 60V, power supply is imported power supply and TV signal synthesis module, high-frequency signal is imported first duplex module;

First duplex module, the high-frequency signal that is used for receiving is separated into WLAN signal and TV signal, and the WLAN signal is imported second duplex module, and TV signal is imported power supply and TV signal synthesis module;

Power supply and TV signal synthesis module, wired TV amplifier is imported in the power supply and the synthetic back of TV signal that are used for receiving, after wired TV amplifier carries out processing and amplifying to TV signal wherein, with the composite signal input power supply and the TV signal separation module of the TV signal after power supply and the amplification;

Power supply and TV signal separation module, the composite signal of the TV signal after being used for the power supply that will receive and amplifying be separated into power supply and amplify after TV signal, power supply is imported power supply and high-frequency signal synthesis module, the TV signal after amplifying is imported second duplex module;

Second duplex module is used for WLAN signal and synthetic back input power supply of the TV signal after the amplification and the high-frequency signal synthesis module that will receive;

Power supply and high-frequency signal synthesis module, it is synthetic and export to next stage to be used for the high-frequency signal that will receive and power supply.

Because the WLAN signal is the transmitted in both directions signal, therefore described power supply and high-frequency signal synthesis module also are used to receive the WLAN signal that next stage sends, and it is sent to local side by second duplex module, first duplex module and power supply and high-frequency signal separation module successively.

Passive network bridge of the present invention to the decay of TV signal less than 5DB, to the decay of WLAN signal less than 6DB.

After adopting the present invention, at local side, the WLAN signal enters coaxial cable by distributor, strides across the CATV amplifier through passive network bridge of the present invention, in the cable TV receiving terminal of input user side.The present invention carries out filtering at the WLAN path to the TV signal, to the purpose that the WLAN signal carries out filtering, has eliminated influencing each other of two kinds of signals at the TV path, has realized the transmitted in both directions of WLAN signal in having the cable of wired TV amplifier.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (7)

1, a kind of in cable television system the method for transmitting WLAN signal, it is characterized in that, comprise step:

The mixed signal of power supply, WLAN signal and TV signal that A, reception local side send is separated into power supply and high-frequency signal, then described high-frequency signal is separated into WLAN signal and TV signal;

B, previous step is separated in the power supply and the synthetic back input of TV signal wired TV amplifier that obtains in rapid, TV signal is wherein carried out processing and amplifying by wired TV amplifier;

C, with described power supply with amplify after the composite signal of TV signal be separated into power supply and amplify after TV signal;

D, the TV signal of described WLAN signal and previous step being separated in rapid after the amplification that obtains synthesize high-frequency signal, then this high-frequency signal and power supply are synthesized and export to next stage.

2, the method for claim 1 is characterized in that, described power supply is the AC power of 60V.

3, a kind of passive network bridge is characterized in that, comprises power supply and high-frequency signal separation module, first duplex module, power supply and TV signal synthesis module, second duplex module, power supply and high-frequency signal synthesis module, power supply and TV signal separation module, wherein,

Power supply and high-frequency signal separation module, be used to receive the mixed signal of power supply, WLAN signal and TV signal that local side sends, be separated into power supply and high-frequency signal, power supply is imported power supply and TV signal synthesis module, high-frequency signal is imported first duplex module;

First duplex module, the high-frequency signal that is used for receiving is separated into WLAN signal and TV signal, and the WLAN signal is imported second duplex module, and TV signal is imported power supply and TV signal synthesis module;

Power supply and TV signal synthesis module, wired TV amplifier is imported in the power supply and the synthetic back of TV signal that are used for receiving, after wired TV amplifier carries out processing and amplifying to TV signal wherein, with the composite signal input power supply and the TV signal separation module of the TV signal after power supply and the amplification;

Power supply and TV signal separation module, the composite signal of the TV signal after being used for the power supply that will receive and amplifying be separated into power supply and amplify after TV signal, power supply is imported power supply and high-frequency signal synthesis module, the TV signal after amplifying is imported second duplex module;

Second duplex module is used for WLAN signal and synthetic back input power supply of the TV signal after the amplification and the high-frequency signal synthesis module that will receive;

Power supply and high-frequency signal synthesis module, it is synthetic and export to next stage to be used for the high-frequency signal that will receive and power supply.

4, passive network bridge as claimed in claim 3, it is characterized in that, described power supply and high-frequency signal synthesis module also are used to receive the WLAN signal that next stage sends, and it is sent to local side by second duplex module, first duplex module and power supply and high-frequency signal separation module successively.

5, passive network bridge as claimed in claim 3 is characterized in that, described passive network bridge to the decay of TV signal less than 5DB.

6, passive network bridge as claimed in claim 3 is characterized in that, described passive network bridge to the decay of WLAN signal less than 6DB.

7, passive network bridge as claimed in claim 3 is characterized in that, described power supply is the AC power of 60V.

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