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:
Jan. 09, 1996
Filed:
May. 25, 1994
Applicant:
Inventor:
Joe L Rainbolt, Rough & Ready, CA (US);
Assignee:
The Grass Valley Group, Inc., Nevada City, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ; H04N / ;
U.S. Cl.
CPC ...
3701001 ; 3701051 ; 348513 ; 348526 ;
Abstract
Audio frame synchronization for embedded audio demultiplexers counts the number of audio samples for each video frame of a digital video signal. The pattern of audio samples per video frame for an audio frame is detected to identify an audio frame boundary, the pattern being a function of the respective video and audio standards for the digital video signal. For example in one embodiment the number of audio samples for consecutive video frames are compared, and when there is equality between consecutive video frames the audio frame boundary is detected.