CN201639681U

CN201639681U - Audio/video matrix switch

Info

Publication number: CN201639681U
Application number: CN2010201137418U
Authority: CN
Inventors: 李森山
Original assignee: SHENZHEN EAST-TOPTECH ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: SHENZHEN EAST-TOPTECH ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2010-02-05
Filing date: 2010-02-05
Publication date: 2010-11-17
Anticipated expiration: 2020-02-05

Abstract

The utility model discloses an audio/video matrix switch, which comprises a shell, and at least two routes of signal input modules and a matrix distribution module, at least two routes of signal output modules and a command receiving module, a switch control module, a switch driving module, and a power source module which are arranged inside the shell. At least two routes of signal input modules are used for inputting audio/video signals; the matrix distribution module is used for receiving the audio/video signals and outputting the audio/video signals during matrix switch; at least two routes of signal output modules are used for outputting the audio/video signals; the command receiving module is used for receiving a switching command; the switch control module is used for switching the switching command encoding so as to control the matrix distribution module to work according to the switching command; the switch driving module is used for receiving the switching signals of the switch control module and controlling whether the signal input modules work; and the power source module is used for supplying power for each module. The utility model can perform matrix switch on multipath input audio/video signals and output the multipath audio/video signals. Each signal output module can independently select input signals without considering the output module condition of other channels, which can be the different from other output or the same. Therefore, the use is extremely convenient.

Description

The audio and video matrix switch

Technical field

The utility model relates to signal shifter, relates in particular to a kind of the multichannel audio-video frequency input signal to be switched the audio and video matrix switch of transmission by multichannel output respectively.

Background technology

In the sales field of digital product, often to show with many display devices (as television set) simultaneously that this needs a plurality of vision signals, and will switch arbitrarily.Existing HDMI switch can only the input of one road signal, multichannel output, can not switch the port of input and output arbitrarily, brings very big inconvenience to use.Market is needed badly and a kind ofly the multichannel audio-video frequency input signal is carried out matrix is switched the switch of back by multichannel output.

The utility model content

The utility model is the problems referred to above that will solve prior art, proposes a kind ofly will switch the audio and video matrix switch of transmission by multichannel output respectively to the multichannel audio-video frequency input signal.

For solving the problems of the technologies described above, the technical scheme that the utility model proposes is: a kind of audio and video matrix switch, comprise housing, it also comprises and to be located at enclosure interior: the signal input module of two-way input audio-video signal at least, receive the audio-video signal row matrix of going forward side by side and switch the matrix form distribution module of output audio-video signal, at least two-way is exported the signal output module of audio-video signal, receive the command reception module of switching command, thereby switching command code conversion gating matrix formula distribution module is pressed the switching controls module of switching command work, receive switching controls module switching signal and control signal output module work whether switching driver module, and to the power module of each module for power supply.

Above-mentioned power module can comprise with external direct current 5V power conversion being 1.8 volts of power converting circuits of direct current 1.8V, is 3.3 volts of power converting circuits of direct current 3.3V with external direct current 5V power conversion.

Above-mentioned command reception module can comprise the key groups of being located on the described housing, can also comprise remote control signal receiver.

Above-mentioned audio-video signal can be the HDMI signal, and above-mentioned matrix form distribution module can comprise the EP9432 chip, and above-mentioned switching controls module can comprise the EPF021A chip.

In one embodiment, the matrix form distribution module also connects the audio frequency optical fiber output module of an output audio fiber-optic signal.

Compared with prior art, the utility model can be imported audio-video signal to multichannel and carry out the matrix switching, exports the multichannel audio-video frequency signal.Each signal output module can be selected in input signal independently, and needn't be concerned about the output module situation of other passage, promptly can with other export different, also can be identical.Be very easy to use.

Description of drawings

Below in conjunction with drawings and Examples the utility model is made detailed explanation, wherein:

Fig. 1 is the theory diagram of the utility model preferred embodiment;

Fig. 2 switches the circuit diagram of driver module for the utility model preferred embodiment

Fig. 3 is the circuit diagram of the utility model preferred embodiment power module;

Fig. 4 is the circuit diagram of the utility model preferred embodiment signal input module;

Fig. 5 is the circuit diagram of the utility model preferred embodiment matrix form distribution module;

Fig. 6 is the circuit diagram of the utility model preferred embodiment switching controls module;

Fig. 7 is the circuit diagram of the utility model preferred embodiment audio frequency optical fiber output module;

Fig. 8 is the circuit diagram of the utility model preferred embodiment signal output module.

Embodiment

Referring to Fig. 1, the utility model comprises housing, and be located at enclosure interior: the signal input module of two-way input audio-video signal at least, receive the audio-video signal row matrix of going forward side by side and switch the matrix form distribution module of output audio-video signal, at least two-way is exported the signal output module of audio-video signal, receive the command reception module of switching command, thereby switching command code conversion gating matrix formula distribution module is pressed the switching controls module of switching command work, receive switching controls module switching signal and control signal output module work whether switching driver module, and to the power module of each module for power supply.

In preferred embodiment, the matrix form distribution module needs the direct current of two kinds of amplitudes, so it is 1.8 volts of power converting circuits of direct current 1.8V that power module comprises external direct current 5V power conversion, with external direct current 5V power conversion 3.3 volts of power converting circuits of direct current 3.3V.Referring to Fig. 3.Because it is a plurality of that the module in the utility model has, so 1.8 volts of power converting circuits are provided with (1,2,3) 3 electronic circuits simultaneously; 3.3 the volt power converting circuit is provided with (4,5,6, U29) 4 electronic circuits simultaneously.Direct current 5V is by external power supply adaptor power supply.

In preferred embodiment, referring to Fig. 4, signal input module has independent of each other 4 the

tunnel

8,9,10,11.Referring to Fig. 8, signal output module has independent of each other 2 the tunnel 12,13.The command reception module comprises key groups and the remote control signal receiver of being located on the described housing.Referring to Fig. 6, key groups comprises SW2, SW3, SW4, SW5; Remote control signal receiver comprises that remote signal receives a CIR.The user both can also can pass through the remote controller inputting switching command by key groups, determined certain signal output module to transmit the signal in certain signal input module respectively.Described audio-video signal is the HDMI signal, and referring to Fig. 5, described matrix form distribution module comprises EP9432 chip 7.Referring to Fig. 6, described switching controls module comprises EPF021A chip 15.Referring to Fig. 7, the matrix form distribution module also connects the audio frequency optical fiber output module 14 of an output audio fiber-optic signal.Referring to Fig. 9, be connected to the switching driver module between switching controls module and the signal output module.

Above embodiment is only for illustrating non-providing constraints.Anyly do not break away from spirit of the present invention and category, and, all should be contained among the application's the claim scope its equivalent modifications of carrying out or change.

Claims

1. audio and video matrix switch, comprise housing, it is characterized in that also comprising and be located at enclosure interior: the signal input module of two-way input audio-video signal at least, receive the audio-video signal row matrix of going forward side by side and switch the matrix form distribution module of output audio-video signal, at least two-way is exported the signal output module of audio-video signal, receive the command reception module of switching command, thereby switching command code conversion gating matrix formula distribution module is pressed the switching controls module of switching command work, receive switching controls module switching signal and control signal output module work whether switching driver module, and to the power module of each module for power supply.

2. audio and video matrix switch as claimed in claim 1, it is characterized in that: described power module comprises with external direct current 5V power conversion being 1.8 volts of power converting circuits of direct current 1.8V, is 3.3 volts of power converting circuits of direct current 3.3V with external direct current 5V power conversion.

3. audio and video matrix switch as claimed in claim 1 is characterized in that: described command reception module is the key groups of being located on the described housing.

4. audio and video matrix switch as claimed in claim 1 is characterized in that: described command reception module is a remote control signal receiver.

5. audio and video matrix switch as claimed in claim 1 is characterized in that: described audio-video signal is the HDMI signal, and described matrix form distribution module comprises the EP9432 chip, and described switching controls module comprises the EPFO21A chip.

6. audio and video matrix switch as claimed in claim 1 is characterized in that: also comprise a connection matrix formula distribution module, the audio frequency optical fiber output module of output audio fiber-optic signal.