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. 27, 2005
Filed:
Sep. 11, 2001
Jie Wang, L'Haÿ les Roses, FR;
Michel Noury, Villebon sur Yette, FR;
Daniel Gardere, Montigny-le-Bretonneux, FR;
Sebastien Keller, Paris, FR;
Sorin Faibish, Newton, MA (US);
Jie Wang, L'Haÿ les Roses, FR;
Michel Noury, Villebon sur Yette, FR;
Daniel Gardere, Montigny-le-Bretonneux, FR;
Sebastien Keller, Paris, FR;
Sorin Faibish, Newton, MA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
MPEG coded video data includes groups of pictures (GOPs). Each group of pictures includes one or more I-frames and a plurality of B- or P-frames. To produce an MPEG slow-forward coded video stream, the coding type of each frame in the MPEG coded video data is identified, and freeze frames are inserted as a predefined function of the identified coding type and as a predefined function of a desired slow down factor. In a preferred implementation, for a slow-down factor of n, for each original I- or P-frame, (n−1) backward-predicted freeze frames are inserted, and for each original B-frame, (n−1) copies of the original B-frames are added, and a selected amount of padding is added to each copy of each original B-frame in order to obtain a normal play bit rate and avoid video buffer overflow or underflow.