Data acquisition from capacitive touch pad

Details Data acquisition from capacitive touch pad Data acquisition from capacitive touch pad

2006-07-11

2006-07-11

Shankar, Vijay (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C345S174000

Reexamination Certificate

active

07075523

ABSTRACT:
A Circuit (in FIG.1) and an Algorithm for Data Acquisition from Capacitive Touch Pad Sensor employs charge transfer to sense capacitance. The circuit has high degree of noise rejection from both system and externally generated noises; it is resistant to the effects of ESD; utilizes a general purpose “off the shelf” components and programmable microcontroller (element10), providing flexibility for changes and adjustments without incurring the high costs of a custom IC design. A settling time and low sensitivity to the noise.

REFERENCES:
patent: 5777604 (1998-07-01), Okajima et al.
patent: 6373474 (2002-04-01), Katabami
patent: 6734843 (2004-05-01), Bertram et al.
patent: 6738048 (2004-05-01), Rundel
patent: 6753853 (2004-06-01), Dotson

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