Coordinate input apparatus and method using voltage measuring de

Details Coordinate input apparatus and method using voltage measuring de Coordinate input apparatus and method using voltage measuring de

1994-05-04

1996-10-15

Cumming, William

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

178 18, G09G 500

Patent

active

055658938

ABSTRACT:
A high-precision coordinate input apparatus having a small circuit construction. A vibrating pen transmits vibration onto a vibration transmitting tablet, then vibration sensors provided at corners of the vibration transmitting tablet detect the vibration. One of the vibration sensor is used as a reference sensor. Time difference between vibration detecting timing by this reference sensor and detecting timing by one of the other sensors is measured. This measurement is performed on all the vibration sensors with respect to the reference sensor. The obtained time differences are converted into distance differences for calculation of the coordinates of the position in which the vibration has been generated. The vibrating pen has a power source and it operates independent of the apparatus main body. The vibrating pen changes its frequency of vibration in accordance with the voltage of the power source. The apparatus main body captures this change in the vibration frequency and obtain the state of the vibration pen power source.

REFERENCES:
patent: 3504334 (1970-03-01), Turnage, Jr.
patent: 4567565 (1986-01-01), Haselby et al.
patent: 4886943 (1989-12-01), Suzuki et al.
patent: 4897510 (1990-01-01), Tanaka et al.
patent: 4910363 (1990-03-01), Kobayashi et al.
patent: 4931965 (1990-06-01), Kaneko et al.
patent: 4980518 (1990-12-01), Kobayashi et al.
patent: 5017913 (1991-05-01), Kaneko et al.
patent: 5070325 (1991-12-01), Tanaka et al.
patent: 5073685 (1991-12-01), Kobayashi et al.
patent: 5097102 (1992-03-01), Yoshimura et al.
patent: 5142106 (1992-08-01), Yoshimura et al.
patent: 5239138 (1993-08-01), Kobayashi et al.

Affiliated with

Also associated with

Rating

Coordinate input apparatus and method using voltage measuring de does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coordinate input apparatus and method using voltage measuring de, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coordinate input apparatus and method using voltage measuring de will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1250248