Lift detection mechanism for optical mouse sensor

Details Lift detection mechanism for optical mouse sensor Lift detection mechanism for optical mouse sensor

2008-07-29

2008-07-29

Dharia, Prabodh (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Cursor mark position control device

C345S161000, C345S162000, C345S163000, C345S167000

Reexamination Certificate

active

07405727

ABSTRACT:
A method for detecting a lift condition from an illuminated surface portion of an optical motion sensing device. According to a first embodiment, two different “loss-of-focus” thresholds are used. A first threshold is used when the optical pointing device is not moving, and a second threshold greater than the first one is used when the optical pointing device is moving. The optical device further requires means for detecting whether it is moving or not. According to a second embodiment, a dynamical loss-of-focus threshold depending on an average number of motion features that the surface exhibits to the sensor of the optical pointing device is used.

REFERENCES:
patent: 5557097 (1996-09-01), Ortyn et al.
patent: 5757360 (1998-05-01), Nitta et al.
patent: 6124587 (2000-09-01), Arreguit et al.
patent: 6195475 (2001-02-01), Beausoleil et al.
patent: 6249603 (2001-06-01), Rucklidge
patent: 6362482 (2002-03-01), Stettner et al.
patent: 6806458 (2004-10-01), Rotzoll et al.
patent: 7078673 (2006-07-01), Afriat
patent: 7122781 (2006-10-01), Rotzoll et al.
patent: 7124041 (2006-10-01), Johnson et al.
patent: 7220956 (2007-05-01), Feldmeier et al.
patent: 7221356 (2007-05-01), Oliver et al.
patent: 7230606 (2007-06-01), Ahn
patent: 2002/0185617 (2002-12-01), Oliver et al.
patent: 2003/0034959 (2003-02-01), Davis et al.
patent: 2003/0058222 (2003-03-01), Casebolt et al.
patent: 2004/0070565 (2004-04-01), Nayar et al.
patent: 2004/0120018 (2004-06-01), Hu
patent: 2004/0130532 (2004-07-01), Gordon et al.
patent: 2004/0135825 (2004-07-01), Brosnan
patent: 2005/0001142 (2005-01-01), Lauffenburger et al.
patent: 2005/0078087 (2005-04-01), Gates et al.
patent: 2005/0190157 (2005-09-01), Oliver et al.
patent: 2006/0197744 (2006-09-01), Tiphane et al.
patent: 2007/0103439 (2007-05-01), Gordon et al.
patent: 2007/0139379 (2007-06-01), Kehlstadt et al.
patent: 2008/0042982 (2008-02-01), Gates et al.
patent: 1 043 688 (2000-10-01), None
patent: WO 03/049018 (2003-06-01), None
Pending U.S. Appl. No. 10/609,686 filed Jul. 1, 2003.

Affiliated with

Also associated with

Rating

Lift detection mechanism for optical mouse sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Lift detection mechanism for optical mouse sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lift detection mechanism for optical mouse sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2759555