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Video Decoder with Non-standard video formats

Discussion in 'Electronic Design' started by [email protected], Nov 8, 2005.

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  1. Guest


    Video Decoders like TI's TVP5150 and AD's ADV7183 can decode
    analog base-band singal into digital format. My question is. Does it
    decode pal with 420 lines or something non-standard. The reason I ask
    is when I connect a 420 line output camera to my tuner card it can
    decode it without any problem and I assume some sort of decoder is
    present in the card.
    Thanks in advnace.

  2. tlbs

    tlbs Guest

    The ADV7181 can be setup to automatically detect the 4 different
    variations of NTSC, the 7 different variations of PAL, or SECAM. It
    converts any of them to ITU-R BT.656 (YCrCb 4:2:2).

    The ADV7183 is very similar to the ADV7181.

    PAL is typically 625 lines (total, including sync), but one of those 7
    variants might support fewer vertical lines. I don't know PAL specs,
    but I recently used the ADV7181 in an NTSC application, and had
    considered the ADV7183 (but it was 'overkill').

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