HDTV subband/DCT coding: analysis of system complexity

Author

Fernandez, A. ; Ansari, R. ; Le Gall, D. ; Chen, C.

Author_Institution

Bell Commun. Res. Inc., Morristown, NJ, USA

fYear

1990

fDate

16-19 Apr 1990

Firstpage

1602

Abstract

A hybrid algorithm has been demonstrated to be an efficient way to encode high-definition television sequences, where each field of the sequence is decomposed into four subbands, with discrete cosine transform applied to the low-frequency subband. The system implementation complexity of such an algorithm and the implementation of low-order filters that perform the subband analysis and synthesis are analyzed. The authors also examine some issues in the connection of the codec to the asynchronous time multiplexing layer for transmission on the CCITT-defined H4 channel. It is shown that a low-cost implementation of the subband/DCT codec for the transmission of distribution quality compressed digital HDTV is feasible at a rate of 135 Mb/s

Keywords

codecs; data compression; encoding; high definition television; time division multiplexing; video signals; 135 Mbit/s; HDTV; asynchronous time multiplexing layer; codec; discrete cosine transform; high-definition television; hybrid algorithm; low-order filters; subband/DCT coding; subbands; system implementation complexity; Asynchronous transfer mode; Codecs; Discrete cosine transforms; Entropy; Filter bank; Finite impulse response filter; Frequency; HDTV; Signal generators; TV;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1990. ICC '90, Including Supercomm Technical Sessions. SUPERCOMM/ICC '90. Conference Record., IEEE International Conference on

Conference_Location

Atlanta, GA

Type

conf

DOI

10.1109/ICC.1990.117333

Filename

117333