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. 30, 2002
Filed:
Nov. 19, 1998
Daniel G. Teichmer, Portland, OR (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
A method for splicing video in MPEG-2 transport stream based on locally available data identifies a splice point in a first video stream at an anchor frame and a splice point in a second video stream subsequent in time at an anchor frame, the time difference between the splice points forming a time span. Inserting into the time span a drain frame sequence for nearly emptying the buffers in a decoder. The drain frame sequence may be a black I-frame followed by as many freeze B-frames as necessary that reference the black I-frame, or may be as many freeze B-frames as necessary that reference the last anchor frame prior to the splice point in the first video stream.