Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2006-05-09
2006-05-09
Awad, Amr A. (Department: 2677)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S175000, C345S166000
Reexamination Certificate
active
07042439
ABSTRACT:
A method of determining a movement vector between two images is disclosed. The two images are sequentially taken by an optical mouse. The method comprises first calculating a directional correlation value for a plurality of directional shifts between the first image and the second image. The minimum directional correlation value is chosen and compared to a threshold value. If the minimum directional correlation value calculated is less than the threshold, identifying a movement vector associated with the minimum directional correlation value. However, if the minimum directional correlation value is not less than the threshold, the first and second images are compressed and the calculations are redone. The compression continues until a qualifying movement vector is identified.
REFERENCES:
patent: 5557341 (1996-09-01), Weiss et al.
patent: 5644139 (1997-07-01), Allen et al.
patent: 5731849 (1998-03-01), Kondo et al.
patent: 5786804 (1998-07-01), Gordon
patent: 5905527 (1999-05-01), Inou et al.
patent: 6014181 (2000-01-01), Sun
patent: 6160900 (2000-12-01), Miyawaki et al.
patent: 6256016 (2001-07-01), Piot et al.
patent: 6259737 (2001-07-01), Fung et al.
patent: 6281882 (2001-08-01), Gordon et al.
patent: 6366317 (2002-04-01), Mattison et al.
patent: 6411278 (2002-06-01), Kage et al.
patent: 6510193 (2003-01-01), Kochi et al.
patent: 6584212 (2003-06-01), Park et al.
patent: 6718064 (2004-04-01), Abe
Awad Amr A.
OmniVision Technologies Inc.
Perkins Cole LLP
Shapiro Leonid
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