DEL EUGENE OGREN
Pilots at Stratford Rd, Bannockburn, IL
License number
Illinois A1415148
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
1579 Stratford Rd, Bannockburn, IL 60015
Professional information
Controller For An Acoustic Wave Touch Panel
US Patent:
5334805, Aug 2, 1994
Filed:
Nov 6, 1992
Appl. No.:
7/972605
Inventors:
Terrence J. Knowles - Hanover Park IL
Del Ogren - Deerfield IL
Del Ogren - Deerfield IL
Assignee:
Carroll Touch - Round Rock TX
International Classification:
G08C 2100
US Classification:
178 18
Abstract:
A controller for an acoustic wave touch panel includes a signal conditioning circuit that can receive and process X axis and Y axis sense signals from the touch panel where the touch panel can be configured with either one or two transducers per sense axis. The signal conditioning circuit includes a differential amplifier to which simultaneously received X axis and Y axis sense signals are applied to provide common mode rejection. The controller also includes a touch position detector that accurately determines the position and pressure of a touch without jitter, the touch position detector including a software low pass filter and peak detector for analyzing the output of the signal conditioning circuit.