Ultrasonic coordinate input apparatus

Details Ultrasonic coordinate input apparatus Ultrasonic coordinate input apparatus

1994-12-29

1997-06-10

Kuntz, Curtis

Telegraphy

Systems

Position coordinate determination for writing

345177, 367907, G08C 2100

Patent

active

056378394

ABSTRACT:
An ultrasonic coordinate input, apparatus comprising a plurality of ultrasonic wave receivers to receive ultrasonic wave emitted by a cordless ultrasonic pen and propagating in an ultrasonic propagating medium, a plurality of receiving circuits for detecting the rising edges of received signals of the ultrasonic wave receivers, a measuring circuit for measuring the difference in time of receiving ultrasonic wave between the ultrasonic wave receivers and a calculating circuit for calculating the coordinates of ultrasonic wave input position according to the result of measurement. When the receiving circuits, the measuring circuit and the calculating circuit are installed together with the ultrasonic wave receivers on the ultrasonic propagating medium, the entire apparatus can be made small in size.

Affiliated with

Also associated with

Rating

Ultrasonic coordinate input apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ultrasonic coordinate input apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic coordinate input apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-766498