Automatic touch screen calibration

Details Automatic touch screen calibration Automatic touch screen calibration

1997-10-29

2000-01-18

Shalwala, Bipin

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

345173, 345174, 178 1802, 178 1805, G09G 300

Patent

active

06016140&

ABSTRACT:
A system and method for automatically recalibrating a resistive touch screen. The resistance of a resistive touch screen layer is subject to change over time, while the resistance of silver bus bars connecting the resistive touch screen layer to analog-to-digital converter (ADC) elements is not. Calibration tables are used to convert an ADC count representing a voltage across the entire touch screen to an ADC count representing a percentage drop across the touch screen layer only. A new calibration table is generated periodically by measuring the current through the touch screen and using this to determine a new voltage drop across the touch screen layer only.

REFERENCES:
patent: 4710758 (1987-12-01), Mussler et al.
patent: 5283559 (1994-02-01), Kalendra et al.
patent: 5471226 (1995-11-01), Suzuki et al.
patent: 5751276 (1998-05-01), Shih

Affiliated with

Also associated with

Rating

Automatic touch screen calibration does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic touch screen calibration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic touch screen calibration will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-566153