hardware based TV Ambilight "SCIMO"

Project Overview

SCIMO TV Ambilight SCIMO TV Ambilight SCIMO TV Ambilight SCIMO TV Ambilight

The device presented here with the name SCIMO can analyze a video signal from a TV or other video source and generates based on the image information suitable visual effects on multiple LEDs. Depending from position of LED at screen frame and current image on screen SCIMO is calculating in realtime a suitable color for each LED. It processes every video frame and is optimized for best perfomance in video analysis which reduce processing time to a non visible delay between video image and LED color. This high permormance gives very dynamic and exciting light effects for example at action scenes on TV.
SCIMO offers different profiles of ambilight operation which can be freely configured by user and selected by IR remote control. For example can be a smoother ambilight mode created with more averaged LED colors and thus is more relaxed for eyes.
Another usefull feature is that SCIMO automatically powers on/off depending on video signal. If for example video source is shut down then SCIMO will also enter standby mode and switch all LEDs complete off by disconneting power supply from LEDs which eliminates idle current of LEDs. In the same way it will wake up when an active video signal is detected.
SCIMO can control up to 240 digital LEDs ( = 240 zones ) and supports the very common WS281x and TM18xx LED stripes.

The device is very compact and requires no support from a PC for video analysis or LED control. It is a real standalone device!

Note: Current project status can be found here: Project Status

FAQ: Why not develop Ambilight hardware with HDMI input ?

The main reason for that is more caused by law then on technical restrictions.
If a device uses HDMI it needs to be HDMI certified, especially if its want to process HCDP (copyright protected content) otherwise it becomes in conflict with law. But such a HDMi / HDCP certification for a device is a very very expensive way... Because of that i decided not to use HDMI as direct input source, instead i use S-Video or Composite signal which also can be connected to a HDMI source by using external HDMI splitter and HDMI to S-Video converter.
Another very importend reason is that normally a TV has not an HDMI output. So if for example the internal tuner from TV (DVB-C, DVB-S, DVB-T...) is used then video signal from TV can only be taken from SCART connector and not HDMI !

Right here are some connection examples shown: SCIMO Connection Examples



Published on: Saturday, June 28 2014 (28553 reads)
Copyright © by Keiang's electronics hobby side


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