H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/33
H04N 5/92 (2006.01) H04N 7/173 (2006.01) H04N 7/52 (2006.01) H04N 7/54 (2006.01) H04N 9/804 (2006.01) H04N 9/806 (2006.01) H04N 5/781 (2006.01)
Patent
CA 1127753
ABSTRACT OF THE DISCLOSURE A digital video and audio file system is provided for use in systems such as a center-to-end video communication system. In the file system, video information, such as a color television video signal is digitized in such a manner that it is separated into a luminance (Y) signal and a carrier chrominance (C) signal and these separated components are processed by the code differential method and the variable length encoding method. The digital signal thus digitized is recorded in a digital recorder. On the other hand, audio informa- tion is digitized by the AD-PCM encoding method and recorded in the same recorder. In encoding the video and the audio information, a part of hardware is used in common for both the signals, thus saving the hardware of the file system.
333197
Achiha Masahiko
Haji Katsumi
Hata Hidetoh
Sako Kazushige
Shibata Yoji
Gowling Lafleur Henderson Llp
Hitachi Ltd.
Nippon Telegraph And Telephone Public Corporation
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