Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
2008-01-08
2008-01-08
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
C345S156000, C345S157000, C345S161000
Reexamination Certificate
active
07317450
ABSTRACT:
The present invention discloses spatial tracking of writing for interpretation of writing motion using three-dimensional position sensors to identify signs, symbols, or glyphs made by a writing stylus in real time. The present invention discloses an elongated pointing device capable of measuring angular directions in a plane and true geometrical distance measurement by tracking radial distance along a ray such that true Cartesian positions in the plane are capable of being tracked. A two-dimensional true geometry tracker may be applied twice. A first time to span the X-Y plane and then again on an orthogonal axis ensuring span in a three-dimensional volume. The tracker may form spherical or cylindrical spatial coordinates and may transform coordinates to Cartesian font coordinates. The present invention also discloses a platform capable of mounting the device for spatial tracking of a stylus. A flat face of the platform may define a surface and volume where a receptacle may engage the stylus and may be actuated by a writer. Sensors on a boom permit two rotation axes to track the radial, polar, and altitude coordinates into three-dimensional (3-D) points and determine dynamic state variables associated with the stylus.
REFERENCES:
patent: 4613866 (1986-09-01), Blood
patent: 5576727 (1996-11-01), Rosenberg et al.
patent: 6081261 (2000-06-01), Stork et al.
patent: 6160924 (2000-12-01), Lazar
patent: 6229102 (2001-05-01), Kitaguchi et al.
patent: 2002/0145596 (2002-10-01), Vardi
patent: 2003/0179201 (2003-09-01), Thacker
patent: WO 95/21436 (1995-08-01), None
patent: WO-95/21436 (1995-08-01), None
patent: WO 99/26191 (1999-05-01), None
patent: WO-99/26191 (1999-05-01), None
patent: WO-2004/029866 (2004-04-01), None
Hjerpe Richard
McAndrews Held & Malloy Ltd.
Shapiro Leonid
LandOfFree
Spatial chirographic sign reader does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spatial chirographic sign reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spatial chirographic sign reader will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2804709