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:
Feb. 01, 2005
Filed:
Aug. 27, 2002
Patrick J. Gries, Crystal Lake, IL (US);
James W. Stroming, Vernon Hills, IL (US);
Patrick J. Gries, Crystal Lake, IL (US);
James W. Stroming, Vernon Hills, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
To ensure synchronization of audio and video decoding operations, the decoding of encoded video information is slaved to the decoding of encoded audio information using the frame-based timing structure of encoded audio information. In one embodiment, time stamps are associated with the encoded audio and video information, which time stamps are encoded in the respective audio and video information relative to a common time reference. At the decode side, the encoded video information is decoded only when an audio time stamp compares favorably with an audio time stamp, e.g., the video time stamp is not greater than the audio time stamp. Otherwise, the encoded video information is not decoded until such time that its video time stamp compares favorably with a subsequent audio time stamp. Using the techniques of the present invention, audio/video synchronization is achieved without the need for a decode-side system timer or delay circuitry.