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:
Sep. 22, 1998
Filed:
Dec. 07, 1995
Chunrong Zhu, Portland, OR (US);
Kenneth L Waters, Aloha, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A current level of a virtual transmission buffer is maintained and used to select video frames for compression. The current level is compared to a threshold to determine whether to compress the current frame. The threshold is dynamically maintained between an upper 'full' level and a lower 'clear' level. If the current level exceeds the full level, the video compression processing is changed to a decline mode in which the threshold is gradually decremented towards the clear level. In addition, if the current level exceeds a 'watch' level for too long, then the video compression processing is also switched to the decline mode. The present invention allows the virtual buffer to absorb variability in compressed frame size from frame to frame without resulting in undesired latency.