Method and apparatus for capturing information in drawing or wri

Details Method and apparatus for capturing information in drawing or wri Method and apparatus for capturing information in drawing or wri

1988-01-29

1990-10-16

Oberley, Alvin

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340706, 341 20, 382 3, G09G 100

Patent

active

049638599

ABSTRACT:
Where a signature is to be automatically verified, or data is to be entered into a computer, a special pen is usually employed but this pen is liable to be stolen or vandalized. In the present invention the tip of an ordinary pen presses lined paper on to a transparent plate and modifies internal reflection in the plate at the point of contact. A light source edge-illuminates the plate and light received by a receiver at another edge of the plate varies in intensity as the pen tip crosses the lines. By measuring the intervals between crossing line boundaries information is obtained which can be analyzed for use in signature verification and data entry.

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IBM Technical Disclosure Bulletin, vol. 18, No. 7, Dec. 1978 (New York, U.S.A.), S. A. Darringer et al.: "Speed Pen", p. 2374.
IBM Technical Disclosure Bulletin, vol. 18, No. 10, Mar. 1976 (New York, U.S.A.), C. H. Bajoreck et al.: "Signature Recognition System Transducer", p. 3484.

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