CN104796630A

CN104796630A - Distributive signal switch transmission method

Info

Publication number: CN104796630A
Application number: CN201510240538.4A
Authority: CN
Inventors: 彭利红
Original assignee: Changsha Chu Feng Numeral Science And Technology Co Ltd
Current assignee: Changsha Chu Feng Numeral Science And Technology Co Ltd
Priority date: 2015-05-13
Filing date: 2015-05-13
Publication date: 2015-07-22
Anticipated expiration: 2035-05-13
Also published as: CN104796630B

Abstract

The invention discloses a distributive signal switch transmission method. The distributive signal switch transmission method is characterized by comprising the following steps: A, producing an encoder, and converting an audio-video signal to a network signal; B, producing a decoder, and converting the network signal to the audio-video signal; C, installing modules which are identical in address onto the encoder and the decoder, and automatically establishing connection between the encoder and the decoder in a same VLAN; D, setting partial ports of a switch as input source ports connected to the encoder, and setting rest ports of the switch as output source ports connected to the decoder; E, inserting an order for setting VLAN of the switch into a WEB management interface of the switch, opening the WEB management interface, transmitting the order to the switch to carry out the switching; F, changing the VLAN of the switch so as to carry out the switch operation according to the order of the switch, automatically establishing connection between the input source ports and the output source ports in each VLAN, switching the input signal to one or more output ports, and thus completing the switch function. The distributive signal switch transmission method is mainly used for the switch transmission of the distributive signal.

Description

A kind of distributed signal switched transmission method

Technical field

The present invention relates to a kind of switched transmission method, particularly relate to a kind of distributed signal switched transmission method.

Background technology

Audio frequency and video technical development to today, from SD technical development to high definition technology.From initial VGA display resolution, to XGA resolution, 1080P60 high definition resolution till now and 4K high definition resolution.More and more higher along with definition, it is more and more outstanding that transmission switches the problem brought.Common VGA cable can transmit 30 meters, but when reaching resolution and reaching 1080P60, then need to adopt DVI format transmission or HDMI format transmission, transmission range drops to less than 10 meters.After reaching 4K resolution, the short problem of transmission range is more outstanding.

In addition on the one hand, network technology is more and more universal, has occurred that high-definition signal is encoded into network signal to be transmitted, and solves long range propagation problem, is carried out the method switched by switch multicasting technology (IGMP).But based on the changing method of switch multicasting technology (IGMP), maximum problem is that handoff delay is very long, and switching capacity is restricted, each input signal and output signal serious interference.Particularly when resolution is brought up to 4K and is above, the problem of signal disturbing and time delay is more outstanding.Based on the changing method of switch multicasting technology (IGMP), can only use in small-sized switched system at a slow speed.When needs switch fast, when needing many inputs, output port, or when needing the switched system of more high definition, suddenly wait to propose new changing method.

Summary of the invention

The object of the present invention is to provide a kind of distributed signal switched transmission method, handoff delay is long, switching capacity is restricted to solve, interfere with each other the problems such as serious, transmission range is short.

For achieving the above object, technical solution of the present invention is: a kind of distributed signal switched transmission method, is characterized in that following steps:

A. make encoder, convert audio-video signal to network signal;

B. make decoder, convert network signal to audio-video signal;

C. installation addresses module in encoder, identical address is arranged in all addresses, and in same VLAN, encoder connects automatically;

D. a part of port of switch is set to the input source port of encoder, another part port is set to the output source port of decoder;

E., in the WEB administration interface of switch, embed " VLAN is set " order of switch, open the WEB administration interface of switch, send order and switch to switch;

F. by order that switch receives, the VLAN changing switch carries out handover operation, handover operation all marks a new VLAN each time, each VLAN marked comprises an input source port and one or more output source port, inside each VLAN, input source port and output source port are automatically set up and are contacted, and input signal is switched to one or more output port, completes handoff functionality.

Beneficial effect of the present invention is: 1. the mode by dividing VLAN in a switch switches, the switching mode of switch is adopted relative to other, as adopted IGMP (multicast) mode, greatly reduce interfering with each other between signal source, the resource consumption of switch is less, and switched system is more firm.2., by being embedded into by switching software in switch WEB administration page, just can switch by logging in the WEB service page Anywhere at network, uses convenient, has user name and cipher control in the WEB service page, safer.3. switched by the mode of switch division VLAN, the quantity of signal source is unrestricted, as long as the port of switch is abundant in theory, just can input abundant signal source.

Accompanying drawing explanation

Fig. 1 is distributed signal switching principle figure of the present invention.

In figure: 1-1 audio-video source, 2-1 encoder, 3-2 encoder, 4-switch, 5-1 decoder, 6-1 audio frequency and video display, 7-2 audio-video source, 8-2 decoder, 9-2 audio frequency and video display, 10-3 audio-video source, 11-3 encoder, 12-3 decoder, 13-3 audio frequency and video display, 14-controls computer.

Embodiment

Below in conjunction with accompanying drawing, the present invention and embodiment thereof are described in further detail.

See Fig. 1, the invention is characterized in following steps:

A. make encoder, convert audio-video signal to network signal;

B. make decoder, convert network signal to audio-video signal;

Concrete switch step:

1, by No. 1 encoder 2, No. 2 encoders 3, No. 3 encoders 11, audio-video signal is encoded into network signal;

2, by No. 1 decoder 5, No. 2 decoders 8, No. 3 decoders 12, network signal is decoded into audio-video signal;

3, each encoder is arranged to identical address, in same VLAN, encoder connects automatically, and the signal of encoder can by multiple Decoder accepts;

4. a port part for switch 4 is defined as A1, A2, A3......An input port, another part port definition is B1, B2, B3......Bm output port.No. 1 encoder 2 is connected with A2 port with A1 port, and No. 3 encoders 11 are connected with A3 port, until An, No. 1 decoder 5 is connected with B1 port, and No. 2 decoders 8 are connected with B2 port, and No. 3 decoders 12 are connected with port B3, until Bm;

5., in the WEB administration interface of switch 4, embed " VLAN is set " order of switch.A1-A2......An input is set at WEB administration interface, B1, B2......Bm output.On the WEB administration interface of the switch 4 on click control computer 14 when A1 switch and B1 crosspoint, then send " VLAN is set " order, A1 port and B1 port are drawn in a VLAN, No. 1 encoder 2 and No. 1 decoder 5 connect automatically, and the audio-video signal of No. 1 audio-video source 1 transmission is just transported on No. 1 audio frequency and video display 6.The audio-video signal of No. 2 audio-video sources 7 transmissions that by parity of reasoning is just transported on No. 2 audio frequency and video displays 9, and the audio-video signal of No. 3 audio-video source transmissions is just transported on No. 3 audio frequency and video displays 13.By A1 and B1, B2, B3 press at all crosspoint, then send the order that " arranges VLAN " of a switch, by A1, with B1, B2, B3 are all divided in a VLAN, then No. 1 encoder 2 and No. 1 decoder 5, No. 2 decoders 8, No. 3 decoders 12 all connect automatically, the audio-video signal of No. 1 audio frequency and video 1 transmission is just transported on No. 1 audio frequency and video display 6, No. 2 audio frequency and video displays 9, No. 3 audio frequency and video displays 13 simultaneously.By parity of reasoning.

6. switch: in WEB administration interface, press different crosspoints, then send different VLAN setting commands, mark different VLAN, by different signal A1, A2......An, arbitrarily from different output port B1, B2 ... Bm draws in corresponding different VLAN.In same VLAN, input signal only has one, and output signal has multiple, and input signal and output signal set up contact automatically, complete switching.

Claims

1. a distributed signal switched transmission method, is characterized in that following steps:

A. make encoder, convert audio-video signal to network signal;

B. make decoder, convert network signal to audio-video signal;