The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1999
Filed:
Mar. 28, 1996
Hideki Sakamoto, Saitamaken, JP;
Tomoaki Kawaguchi, Saitamaken, JP;
Hideharu Suzuki, Tokyo, JP;
Tatsuo Mori, Chibaken, JP;
Hiroyuki Kimiyama, Saitamaken, JP;
Kazutoshi Nishimura, Tokyo, JP;
Kouichi Itoh, Kanagawaken, JP;
Mitsuru Maruyama, Tokyo, JP;
Hiroshi Sugiyama, Saitamaken, JP;
Akira Uemori, Tokyo, JP;
Kazuo Okada, Saitamaken, JP;
Nippon Telegraph & Telephone Corp., Tokyo, JP;
Abstract
A video data playback system for reproducing requested video data by switching coded video data to be reproduced between normal playback coded video data and fast playback coded video data according to a requested playback mode, where the normal playback coded video data are encoded by a first video coding scheme using both intra-frame coding and inter-frame coding, while the fast playback coded video data are encoded by a second video coding scheme using only intra-frame coding and having a playback bit rate and a frame rate identical to those of the normal playback coded video data. The normal playback coded video data can be obtained by encoding the original video data first, then the fast playback coded video data can be obtained by encoding selectively decoded normal playback coded video data. Alternatively, the normal and fast playback coded video data can be obtained by synchronizing start and end of encoding by the first video coding scheme and encoding by the second video coding scheme.