Title :
Two-layered DCT based coding scheme for recording digital HDTV signals
Author :
Kim, JaeHyun ; Park, Gooman
Author_Institution :
Video Lab., Samsung Electron. Co., Suwon, South Korea
Abstract :
For the purpose of digital recording of HDTV signals we have designed a bit rate reduction coder that can reduce the input data rate by a compression ratio greater than 2, while maintaining excellent quality for studio applications. In this paper we have developed an adaptive quantization algorithm to decide scale factor that can optimize bit allocation in a cluster unit. Two-layered code data fixed cluster by cluster serves trick play. This algorithm has been designed to fulfil the constraints of professional studio recorders such as interframe editing, multiple copy, picture quality, trick play and robustness for burst and random errors
Keywords :
adaptive signal processing; data compression; digital magnetic recording; digital television; discrete cosine transforms; high definition television; quantisation (signal); television studios; transform coding; video coding; video recording; video signals; adaptive quantization algorithm; bit allocation; bit rate reduction coder; burst errors; cluster unit; compression ratio; digital HDTV signals recording; input data rate reduction; interframe editing; multiple copy; picture quality; professional studio recorders; random errors; scale factor; studio applications; trick play; two-layered DCT coding; two-layered code; Bit rate; Clustering algorithms; Decoding; Digital recording; Discrete cosine transforms; HDTV; Quantization; Signal design; Video compression; Video recording;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389397
