Laser scanning graphic input system

John L. Junkins; Jagmohan S. Gadhok

doi:10.1117/12.165199

29 December 1993 Laser scanning graphic input system

John L. Junkins, Jagmohan S. Gadhok

Proceedings Volume 1987, Recording Systems: High-Resolution Cameras and Recording Devices and Laser Scanning and Recording Systems; (1993) https://doi.org/10.1117/12.165199
Event: Electronic Imaging Device Engineering, 1993, Munich, Germany

Abstract

A novel method for digitization of hand-written and hand-drawn information is presented. Two or more resonant laser scanners sweep out a plane, the interruption of these laser beams by a hand-held stylus and the beams' angular positions are detected. These data can be used to digitize coordinates along the hand-drawn lines with high precision (approximately 1 part in 10,000) and digitization rates (> 150 HZ). The data input surface can vary from small to large (permitting digitization on wall-sized writing surfaces), thus enabling a new family of applications. We discuss a novel application of this laser digitizing system, in conjunction with emerging radio modem and pen-computer technology, to the automation of class or conference room note-taking.

Citation Download Citation

John L. Junkins and Jagmohan S. Gadhok "Laser scanning graphic input system", Proc. SPIE 1987, Recording Systems: High-Resolution Cameras and Recording Devices and Laser Scanning and Recording Systems, (29 December 1993); https://doi.org/10.1117/12.165199

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