An AD-converted digital video data is encoded by a difference encoding method before it is outputted and such encoded digital video data is then outputted, after it is converted to gray code or to a predetermined code in which a fixed value is added. Problems solved include noise that is generated when...http://www.google.co.uk/patents/US7351946?utm_source=gb-gplus-sharePatent US7351946 - Semiconductor integrated circuit device and imaging system
