Still video transceiver over the general telephone networks

Author

Honda, Toyota ; Tsuboi, Yukitoshi ; Okamoto, Teiji

Author_Institution

Hitachi Ltd., Yokohama, Japan

Volume

34

Issue

4

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

894

Lastpage

904

Abstract

A description is given of a still video transceiver that transmits full-colour still pictures to anywhere in the world over the general world-wide telephone networks. The system uses highly efficient picture coding that compresses picture data to about 3 bit/pixel with little degradation of quality. This accomplished by the combination of discrete cosine transform (DCT) and entropy coding. Highly reliable transmission under bad telephone-line conditions is realized by the combination of retransmission and fallback techniques. Experimental results of the data compression and transmission of a standard picture by the still video transceiver system are shown

Keywords

encoding; facsimile equipment; picture processing; telephone networks; transceivers; video equipment; DCT; colour still pictures transmission; data compression; discrete cosine transform; entropy coding; fallback; picture coding; retransmission; still video transceiver; telephone networks; Cameras; Central office; Facsimile; Printers; Protocols; Signal processing; Telecommunication network reliability; Telephony; Transceivers; Visual communication;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.9900

Filename

9900