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:
Apr. 09, 2002
Filed:
Apr. 29, 1999
Toshio Mizuno, Nagoya, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The playback time of a video stream can be expanded by outputting twice frames having a low rate of video change and a low audio level, and the playback time can be compressed by dropping frames having a low rate of video change and a low audio level. The playback time can thus be increased or decreased easily and in a short time compared with methods in which the playback time is increased or decreased by re-editing. The viewer also perceives less unnatural video or audio compared with methods in which the playback time is increased or decreased by varying the playback speed because there is no slowing of image motion with an accompanying drop in audio pitch, nor is there a quickening of image motion with an accompanying rise in audio pitch.