The complication of a pattern of each macro block is predetermined by feed-forward. When a macro block is determined as a complicate pattern, a particular value is added to a quantizing step width and thereby the quantizing step width is increased. Since the quantizing step width of macro blocks of complicate...http://www.google.com/patents/US5317396?utm_source=gb-gplus-sharePatent US5317396 - Highly efficient encoding apparatus
