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image_engineering_decoder_dvd-283 [2018/04/19 21:08] telmnstr created |
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====== Image Engineering Digital Video Decoder DVD-283 ====== | ====== Image Engineering Digital Video Decoder DVD-283 ====== | ||
+ | Information here is based on research and logical guesses. | ||
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+ | - This unit decodes digital data modulated in a video signal to DACs that drive laser projectors. | ||
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+ | - This unit doesn't appear to have a CPU. The incoming data seems to clock the hardware and the data to the DACs. | ||
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+ | - The unit supports two scan heads, A and B. When both are active it appears to cut the scan rate in half. | ||
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+ | - The unit has 4 digital outputs in addition to X/Y/R/G/B, B1 thru B3 and a SH(utter?) | ||
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+ | - The DACs for R G B channels are 8 bit DACs, but two of the data pins are tied to ground | ||
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+ | - The DACs for X and Y appear to be 12 bit | ||
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+ | Ethan has done some work drawing out a schematic for the DAC side to discover where to pick up the clock and serial data after it's pulled from the video signal with the idea of building a microcontroller program to take that data and push it to a computer with no loss. | ||
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+ | {{ :ie_dvd_283_decoder1.jpg?400 |}} | ||
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+ | {{ :ie_dvd_283_decoder2.jpg?400 |}} | ||
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+ | {{ :ie_dvd_283_decoder3.jpg?400 |}} | ||