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BT656 -> why blanking is needed?

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ivlsi

ivlsi

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Hi All,

As for BT65Btvideo protocol -> why blanking (vertical as well as horizontal) is needed?

Thank you!
 

This digital video format reproduces the timing of an analog video frame, including the blanking periods.
 

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In order to allow time for high voltage sawtooth to return to start of ramp in CRT's a blanking interval is necessary and is wasted in LCD's but retained for backward compatibility.
 

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