CN202282816U

CN202282816U - HDMI signal matrix switcher

Info

Publication number: CN202282816U
Application number: CN2011204367149U
Authority: CN
Inventors: 于晓亮
Original assignee: SHENZHEN EISEN VAIL TECHNOLOGY Co Ltd
Current assignee: SHENZHEN EISEN VAIL TECHNOLOGY Co Ltd
Priority date: 2011-11-04
Filing date: 2011-11-04
Publication date: 2012-06-20
Anticipated expiration: 2021-11-04

Abstract

The utility model discloses a HDMI signal matrix switcher, which comprises a plurality of signal input modules, a two-path signal output module, a switch distribution input module connected between input, output modules in series, a matrix switch module of an output module signal channel, a command receiving module for receiving an operator switch command, an MCU control module connected with the command receiving module to code and convert the switch command to control the operation of the matrix switch module, and a distribution sending module connected between the MCU control module and the signal output module in series and for receiving the switch signal from the MCU control module to control whether the signal output module operates or not. The multi-path input audio, video signal is subjected to matrix switch, the multi-path audio, video signal is output and the signal output modules can independently select in the input signal. The digital audio signal is output by an optical fiber interface and the matrix switcher is also externally connected with earphones. Thus the audio and video equipment is more conveniently, comfortably and efficiently used in an energy saving way.

Description

A kind of HDMI signal matrix switch

Technical field

The utility model relates to signal shifter, relates in particular to a kind of matrix switcher that multichannel HDMI input signal is switched to multichannel HDMI output signal.

Background technology

The market is when demonstration multimedia audiovisual equipment; The playing audio/video of multiple output HDMI signal is arranged, and these HDMI signal output apparatus need be wired to respectively on the display device of compatible high-definition signal, but the quantity of live play equipment and display device is not necessarily mated; Or some display device will often be changed the program that shows different playback equipments; If plug the HDMI Signal plug back and forth, the one, waste time, the 2nd, damage HDMI Signal plug, socket easily.A kind of matrix switcher that multichannel HDMI input signal is switched to multichannel HDMI output signal is needed in market badly.

The utility model content

The utility model is the problems referred to above that will solve prior art, proposes a kind of matrix switcher that multichannel HDMI input signal is switched to multichannel HDMI output signal.

For solving the problems of the technologies described above; The technical scheme that the utility model proposes is: a kind of HDMI signal matrix switch, thereby it comprise signal input module, the two-way output audio-video signal of two-way input audio-video signal at least signal output module, be serially connected in command reception module, link order receiver module that switching between the input/output module distributes matrix handover module, the reception operator switching command of input module and output module signalling channel to switching command carry out the work of code conversion gating matrix handover module the MCU control module, be serially connected in switching signal that the reception MCU control module between MCU control module and the signal output module sends with control signal output module work whether distribution sending module and to the power module of each module for power supply.

Above-mentioned matrix handover module connects an audio frequency output module.

Above-mentioned command reception module can be button assembly.

Above-mentioned command reception module can be remote control signal receiver.

Above-mentioned audio-video signal is the HDMI 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.Support 3D, support the SPDIF function: can pass through optical fiber outputting digital audio signal, also can pass through the external earphone of receiver J-Horner.It is more convenient to make audio-visual devices use, more comfortable, more efficient, more energy-conservation.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is made detailed explanation, wherein:

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

Fig. 2 distributes the circuit diagram of sending 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 handover module;

Fig. 6 is the circuit diagram of the utility model preferred embodiment MCU control module;

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

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

Embodiment

The utility model discloses a kind of HDMI signal matrix switch; Referring to Fig. 1, thus it comprise signal input module, the two-way output audio-video signal of the input of two-way at least audio-video signal signal output module, be serially connected in command reception module, link order receiver module that switching between the input/output module distributes matrix handover module, the reception operator switching command of input module and output module signalling channel to switching command carry out the work of code conversion gating matrix handover module the MCU control module, be serially connected in switching signal that the reception MCU control module between MCU control module and the signal output module sends with control signal output module work whether distribution sending module and to the power module of each module for power supply.

During use, logical last 5 volts of DC power supplys connect the signal input port of HDMI signal to the utility model, connect the signal output port of high-definition signal display to the utility model.The user sends switching command through the command reception module and gives the MCU control module; By the MCU control module control command is delivered to the matrix handover module again; The matrix handover module outputs to signal output port with the signal of pairing HDMI signal source; The MCU control module is divided into identical 2 groups or 2 groups of HDMI signals inequality by user's instruction with the HDMI signal chronologically to be delivered on two output modules, distributes sending module to drive two output modules by the instruction of MCU control module and whether transmits the HDMI signal.Thereby be assigned to 2 signal output ports to the signal of HDMI signal source input port by user instruction, deliver to the high definition display device.

In preferred embodiment, matrix switcher needs the direct current of two kinds of amplitudes, comprises with external direct current 5V power conversion being 1.8 volts of power converting circuits of direct current 1.8V referring to Fig. 3 power module, and the signal of its DC converting chip U4 is NCP1117A; And be 3.3 volts of power converting circuits of direct current 3.3V with external direct current 5V power conversion, the signal of its DC converting chip U1 is NCP1117A.Direct current 5V is by external power supply adaptor power supply.

In the preferred embodiment shown in Fig. 4, it is independent of each other 4 the tunnel that signal input module has, and its main interface is J2, J3, J4, J5.These ports receive 4 road HDMI input signals (can transmit TMDS, DDC, CEC, HPD signal) respectively, and the HDMI input signal is transferred to the matrix handover module.The circuit of matrix handover module is referring to Fig. 5, and its main chip IC1 (model is EP9432), this chip have the function that distribution was handled and switched to audio frequency and video; Convert the Y/cb/cr signal of embedded capable field synchronization into; Signal is the Y/CB/CR conversion of signals that HDMI sends through handling then, according to control command 4 road HDMI input signals is selected to switch simultaneously, and the signal that determines certain input channel respectively is by exporting in certain output channel; 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.Fig. 8 shows the circuit diagram of signal output module, has independent of each otherly 2 the tunnel, and output port is J6, J7.J6, J7 can transmit TMDS, DDC, CEC, HPD signal, in order to connect display device.Fig. 6 shows the circuit diagram of preferred embodiment command reception module and MCU control module; The main chip IC3 of MCU control module (model is EPF021A); The work such as verification with HDCP of reading of EDID are accomplished in initialization and the variation of state machine of MCU control module through total each chip of line traffic control of I2C.The command reception module comprises button assembly and the remote control signal receiver that is connected with the IC3 chip, and 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 through key groups, and said audio-video signal is the HDMI signal.Referring to Fig. 7, the matrix handover module connects an audio frequency output module.The audio frequency output module comprises the interface (indicating the interface of OPTICAL) of an external optical fiber, and the matrix handover module is by this interface output digital signal, external digital audio-power amplifier.The audio frequency output module also comprises an earphone interface J9, and matrix handover module output digital signal is looked format conversion IC (chip signal CS4344) through sound, converts digital signal into analog signal, outputs to earphone through J9.Referring to Fig. 2, be connected in series the distribution sending module between MCU control module and the signal output module, main chip U22 (model MC74LVXT4052), whether it receives the switching signal that the MCU control module is sent, control two output modules and work.

Above embodiment is merely and illustrates, non-providing constraints.Any spirit and category that does not break away from the application, and to its equivalent modifications of carrying out or change, all should be contained among the application's the claim scope.

Claims

1. HDMI signal matrix switch is characterized in that: thus comprise signal input module, the two-way output audio-video signal of two-way input audio-video signal at least signal output module, be serially connected in command reception module, link order receiver module that switching between the input/output module distributes matrix handover module, the reception operator switching command of input module and output module signalling channel to switching command carry out the work of code conversion gating matrix handover module the MCU control module, be serially connected in switching signal that the reception MCU control module between MCU control module and the signal output module sends with control signal output module work whether distribution sending module and to the power module of each module for power supply.

2. HDMI signal matrix switch as claimed in claim 1 is characterized in that: said matrix handover module connects an audio frequency output module.

3. HDMI signal matrix switch as claimed in claim 1 is characterized in that: said command reception module is a button assembly.

4. HDMI signal matrix switch as claimed in claim 1 is characterized in that: said command reception module is a remote control signal receiver.

5. like each described HDMI signal matrix switch of claim 1 to 5, it is characterized in that: said audio-video signal is the HDMI signal.