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:
Feb. 13, 1979
Filed:
Jun. 22, 1977
James Liljenwall, Berkeley, CA (US);
David Moss, Berkeley, CA (US);
Creative Ventures, Inc., Dayton, OH (US);
Abstract
A manual information entry device comprises a multi-segment face including electrically isolated adjacent surfaces presenting a bounded face within which characters and signs are traced by a human finger. Each of the surfaces or segments has an associated sensor operative to produce a different output state when the surface is touched and when it is not touched. Encoding logic devices are connected to each of the sensors and operate to generate information codes corresponding to the first and last touched segments in a given trace. The device may be worn by the user, and may include calculating and time circuits which make up a wristwatch/calculator. Contact between the watch case, or a part thereon, and the body of the wearer may be utilized as part of the touch sensing circuits.