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:
Dec. 02, 2003
Filed:
Aug. 16, 1999
Nortel Networks Limited, , CA;
Abstract
In order to compensate for rate mismatches between near end (receiving) and far end (transmitting) devices, intelligent jitter buffer management is implemented by apparatus comprising: a data interface for receiving frames from a data network; a jitter buffer for temporarily storing said frames; a detector for detecting frames which satisfy a criteria; and a buffer manager for controlling the frames stored in said jitter buffer based on the condition of said buffer and on frames which satisfy said criteria. The criteria can include silence frames or frames received with errors. The condition can include a high water mark (high threshold), and a low water mark (low threshold). If the far end transmitter transmits at a faster rate than the near end receiver, the jitter buffer will eventually become full beyond the high water mark, in which case frame(s) which satisfy the criteria will be deleted. If the far end transmitter transmits at a slower rate than the near end receiver, the jitter buffer will eventually become depleted below the low water mark, in which case silence frame(s) will be inserted after received silence frames.