The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 1992
Filed:
Jul. 05, 1990
Colin S Hilton, London, GB;
National Research Development Corporation, London, GB;
Abstract
Obtaining data for signature recognition or data entry are relatively expensive because the apparatus used at each entry point is fairly complex. The present invention employs a relatively inexpensive pen which may be a ball pen with a transparent ball, an ink reservoir, a light sensitive device and an analyzing circuit. Either the circuit or apparatus coupled to the pen is arranged to analyze, on a temporal basis, light received by the light sensitive device which has been modulated as the pen is used to write on closely lined paper. Alternatively, the pen may contain storage and transmit data for external analysis. The analysis can be used, for example, in signature verification or data entry. Other forms of inexpensive devices for obtaining data using pens writing on lined paper are described.