In a digital VTR that carries out magnetic recording and reproduction by bit rate reduction coding a digital video signal, a fixed length block is formed by controlling the code amount of a large block including a plurality of small blocks located distant from each other on a screen at the time of recording....http://www.google.com/patents/US5309292?utm_source=gb-gplus-sharePatent US5309292 - Digital recording and/or reproduction apparatus of video signal rearranging main components within a fixed length block
