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Class Information
Number: 178/18.02
Name: Telegraphy > Systems > Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry) > Error correction
Description: Subject matter including means to compensate for distortion of the inputted position coordinates.


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7375656 Circuit configuration for a capacitive touch switch May. 20, 2008
7327354 Low power dissipation touch plane interface circuit Feb. 5, 2008
7268774 Tracking motion of a writing instrument Sep. 11, 2007
7177132 Method and apparatus for determining a switching signal state Feb. 13, 2007
7158122 Calibration of force based touch panel systems Jan. 2, 2007
7154481 Touch sensor Dec. 26, 2006
7116315 Water tolerant touch sensor Oct. 3, 2006
7106311 Correction of alignment and linearity errors in a stylus input system Sep. 12, 2006
7098897 Touch screen assembly and display for an electronic device Aug. 29, 2006
7094978 System and method for generating a high speed estimated position output for a position encoder Aug. 22, 2006
7053886 Liquid crystal panel device having a touch panel and method for driving the same May. 30, 2006
7012199 COORDINATES CORRECTION APPARATUS, COORDINATES CORRECTION PARAMETER CALCULATION APPARATUS, COORDINATES CORRECTION METHOD, COORDINATES CORRECTION PARAMETER CALCULATION METHOD, MEMORY MEDIUM FOR Mar. 14, 2006
6998545 Touch and proximity sensor control systems and methods with improved signal and noise differentiation Feb. 14, 2006
6906695 Touch control apparatus and touch control method that can be applied to electronic instrument Jun. 14, 2005
6885365 Glass touch sensing circuit Apr. 26, 2005
6875933 Methods and apparatus for configuring a writing surface Apr. 5, 2005
6849810 Antenna loop structure Feb. 1, 2005
6816153 Touch-panel device Nov. 9, 2004
6806869 Data processing system utilizing discrete operating device Oct. 19, 2004
6784876 Coordinate reading device Aug. 31, 2004
6781577 Capacitive sensor-based input device Aug. 24, 2004
6731270 Piezoelectric transducer for data entry device May. 4, 2004
6730863 Touchpad having increased noise rejection, decreased moisture sensitivity, and improved tracking May. 4, 2004
6727896 Correction of alignment and linearity errors in a stylus input system Apr. 27, 2004
6703570 Digital pen using ultrasonic tracking Mar. 9, 2004
6683601 Electronic apparatus including pen Jan. 27, 2004
6661408 Touch screen capable of isolating noise signals Dec. 9, 2003
6633280 Touch panel device Oct. 14, 2003
6610936 Object position detector with edge motion feature and gesture recognition Aug. 26, 2003
6603464 Apparatus and method for record keeping and information distribution Aug. 5, 2003
6506983 Algorithmic compensation system and method therefor for a touch sensor panel Jan. 14, 2003
6489575 Sensor panel position coordinates signal detecting circuit Dec. 3, 2002
6456952 System and method for touch screen environmental calibration Sep. 24, 2002
6424338 Speed zone touchpad Jul. 23, 2002
6380930 Laptop touchpad with integrated antenna Apr. 30, 2002
6373475 Converter for resistive touchscreens Apr. 16, 2002
6366866 Coordinates detecting apparatus for independently correcting coordinates Apr. 2, 2002
6366278 Camera system Apr. 2, 2002
6359616 Coordinate input apparatus Mar. 19, 2002
6353193 Electronic whiteboard system and method Mar. 5, 2002
6340979 Contextual gesture interface Jan. 22, 2002
6215477 Touch sensitive display panel Apr. 10, 2001
6130665 Touch screen handling Oct. 10, 2000
6124848 Method and apparatus for reducing flat panel display horizontal scan signal interference in the electrostatic pen operated digitizer Sep. 26, 2000
6016140 Automatic touch screen calibration Jan. 18, 2000
6005200 Compensation of stylus signals in digitizing tablet Dec. 21, 1999
5994651 High voltage stylus for portable computers Nov. 30, 1999
5940065 Algorithmic compensation system and method therefor for a touch sensor panel Aug. 17, 1999
5902967 Method and apparatus for eliminating an offset signal in an electrostatic digitizing tablet May. 11, 1999
5898426 Touch panel input device Apr. 27, 1999

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