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:
Jul. 02, 2002
Filed:
May. 20, 1999
Sony Corporation, Tokyo, JP;
Abstract
An edit point of an earlier GOP is placed after an I picture I In addition, the edit point is not placed immediately after an I or P picture. Thus, the GOP is decoded. A stream placed after the edit point (a P picture and later pictures) is discarded. B pictures B and B placed after a P picture P are re-encoded with a forward moving vector Fw. The remaining pictures other than B pictures B and B are re-encoded with encoding information used in a decoding process. Since an edit point of a later GOP is not placed before the I picture I the GOP is decoded. A stream placed before the edit point (pictures B to P ) is discarded. The first P picture P is changed to an I picture. Thereafter, the re-encoding process is performed. The P picture P changed from the I picture is used as a predictive reference picture. With the P picture P a backward moving vector Bk is obtained. With only the moving vector Bk, the B pictures B and B placed before the P picture P are re-encoded.