Title :
A 130 Mb/s compact HDTV codec based on a motion-adaptive DCT algorithm
Author :
Konoshita, T. ; Nakahashi, Tomoko
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
fDate :
1/1/1992 12:00:00 AM
Abstract :
The authors describe the principle and implementation of a 130 Mb/s compact HDTV codec based on a motion-adaptive DCT (discrete cosine transform) algorithm. They describe a data compression algorithm using motion-adaptive (motion processing over 5 or 10 frames) intrafield two-dimensional (8×8) DCT coding and block-adaptive quantization with eight modes which is suitable for recording systems. The hardware of the codec using a parallel signal processing architecture and three types of gate-array LSIs is discussed. The picture quality evaluation is considered, and suitable picture quality for distribution use is confirmed
Keywords :
codecs; computerised picture processing; data compression; digital signal processing chips; high definition television; large scale integration; logic arrays; parallel processing; transforms; 130 Mbit/s; HDTV codec; block-adaptive quantization; data compression algorithm; discrete cosine transform; distribution; gate array LSI; intrafield 2D DCT coding; motion processing; motion-adaptive DCT algorithm; parallel signal processing architecture; picture quality; recording systems; Codecs; Data compression; Discrete cosine transforms; HDTV; Hardware; Quantization; Signal processing algorithms; Video compression; Video recording; Video signal processing;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
