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:
Dec. 23, 1997
Filed:
Dec. 13, 1995
Masatoshi Uchio, Fukushima-ken, JP;
Yuichi Yasuda, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A portable input apparatus used in conjunction with a controllable information processing apparatus which comprises a light receiving element receiving a base light emitted from a light emitting section of the controllable information processing apparatus and being composed of a first detector light receiving element, a second detector light receiving element and a reference light receiving element arranged therebetween, each being of a non-split type; an optical signal transmitting section transmitting an optical signal to the controllable information processing apparatus side; signal conversion sections converting an output current of the non-split type light receiving element and generating a time shared output voltage; a signal processing section processing the time shared output voltage to generate relative angle data; and a control section performing operation and calculation of the relative angle data to form a coordinate signal and transmitting the optical signal including the coordinate signal to the controllable information processing apparatus side.