Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2004-03-02
2008-03-04
Philippe, Gims (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S236000
Reexamination Certificate
active
07339991
ABSTRACT:
A method and apparatus for performing motion estimation in a digital video system is disclosed. Specifically, the present invention discloses a system that quickly calculates estimated motion vectors in a very efficient manner. In one embodiment, a first multiplicand is determined by multiplying a first display time difference between a first video picture and a second video picture by a power of two scale value. This step scales up a numerator for a ratio. Next, the system determines a scaled ratio by dividing that scaled numerator by a second first display time difference between said second video picture and a third video picture. The scaled ratio is then stored calculating motion vector estimations. By storing the scaled ratio, all the estimated motion vectors can be calculated quickly with good precision since the scaled ratio saves significant bits and reducing the scale is performed by simple shifts.
REFERENCES:
patent: 5436664 (1995-07-01), Henry
patent: 5483286 (1996-01-01), Kim
patent: 5737023 (1998-04-01), Linzer
patent: 6072834 (2000-06-01), Kim et al.
patent: 6088485 (2000-07-01), Kadono
patent: 6108047 (2000-08-01), Chen
patent: 6295377 (2001-09-01), Dufaux
patent: 6297852 (2001-10-01), Laksono et al.
patent: 6400768 (2002-06-01), Nagumo
patent: 6552749 (2003-04-01), Jones et al.
patent: 6728315 (2004-04-01), Haskell et al.
patent: 6859609 (2005-02-01), Watkins
patent: 7088776 (2006-08-01), Haskell et al.
patent: 2004/0008776 (2004-01-01), Haskell
patent: 2004/0240557 (2004-12-01), Haskell
patent: 10174035 (1998-06-01), None
patent: 10174065 (1998-06-01), None
International Search Report Jan. 27, 2004.
(Non-Final Office Action) U.S. Appl. No. 10/291,320, filed Nov. 8, 2002, Haskell, et al.
(Final Office Action) U.S. Appl. No. 10/291,320, filed Nov. 8, 2002, Haskell, et al.
International Search Report Nov. 14, 2003 Apple Computer, Inc.
Dumitras Adriana
Haskell Barin Geoffry
Puri Atul
Singer David William
Adeli & Tollen LLP
Apple Inc.
Philippe Gims
LandOfFree
Method and apparatus for variable accuracy inter-picture... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for variable accuracy inter-picture..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for variable accuracy inter-picture... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3969696