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HDMI Matrix application
1.  What is HDMI Matrix?


A HDMI Matrix Switch is an electronic switch that route HDMI signals from multiple input sources such as STB, DVR, computers and DVD players, to one or more HDMI display devices, such as monitors, projectors, and TVs.


①All displays share same input source




②Part of displays share different input sources





③Each display select a standalone input source





2.  Control of HDMI Matrix




①Remote control




②Front panel keypad



③RS232 or LAN(TCP/IP)



3.  Compatibilities



Before we talking about compatibilities of HDMI matrix, we would introduce EDID first. EDID is short for Extended Display Identification Data, it is a data structure provided by a digital display to describe its capabilities to a video source, so the video source could output a video most suitable for the display. In Tesla smart's matrix, each HDMI input source has a EDID memory presented to the source player. And there is a MCU is always monitoring the routing status of the matrix, once the routing status changes, the MCU read and analyze all the EDIDs of the displays sharing same input and create a new EDID which best describes the displays' capabilities for the display. Finally the MCU save the new EDID to the corresponding EDID memory connected to the input source.







4. Different types HDMI matrixes




①4x2 HDMI matrix


4.1.1 Basic connection diagram



4.1.2 Used in big meeting room with two displays


1) Meeting room is split to two little room, two projectors select different input sources



2) Combine two little meeting rooms together, two projectors share same input source.



4.1.3 Used in home entertainment system





②4x2 HDMI matrix


4.2.1 Basic connection diagram



4.2.2 Home entertainment system



③4x4 HDMI matrix


4.3.1 Basic connection diagram




4.3.2 For financial company





④4x8 HDMI matrix extension


4.4.1 Basic connection diagram




4.4.2 Smart home use





⑤8x8 HDMI matrix


4.5.1 Basic connection diagram




4.5.2 Control center use





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