DocumentCode
2618388
Title
Digital bit-rate reduction systems of HDTV
Author
Ohtsuka, Yoshimichi ; Nakasu, Eisuke ; Shishikui, Yoshiaki
Author_Institution
NKK Sci. & Tech. Res. Lab., Tokyo, Japan
fYear
1990
fDate
1-3 May 1990
Firstpage
1903
Abstract
A study of digital coding of an HDTV picture appropriate for use with contribution links is described. Three coding methods, which are based on differential pulse-code modulation (DPCM), discrete transform cosine (DCT), and vector quantization (VQ) techniques, respectively, are proposed and evaluated with the aid of computer simulation. It has been found that all three methods provide good picture quality without perceptible degradation when used at a bit rate of twice the H4 rate. The vector-quantization-based method is the most hopeful candidate for transmission at a rate of H4
Keywords
decoding; encoding; high definition television; picture processing; pulse-code modulation; video signals; DCT; DPCM; HDTV picture; PCM; bit-rate reduction systems; computer simulation; contribution links; differential pulse-code modulation; digital coding; discrete transform cosine; picture quality; vector quantization; Broadcasting; Degradation; Discrete cosine transforms; Discrete transforms; Guidelines; HDTV; Laboratories; Roads; Testing; Video compression;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location
New Orleans, LA
Type
conf
DOI
10.1109/ISCAS.1990.112060
Filename
112060
Link To Document