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:
Jun. 10, 2003
Filed:
Jul. 19, 1999
Shigeki Inoue, Shiojiri, JP;
Yoshito Uzawa, Chofu, JP;
Hajime Kurihara, Nagano-ken, JP;
Motomu Hayakawa, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An information processing device to which data can be input by the use of a rotary bezel. A pulse-count detection sensor unit and a rotational-direction detection sensor unit read an optical pattern which is formed on the rotary bezel to generate a series of pulse signals. The pulse-count detection sensor unit and the rotational-direction detection sensor unit are arranged such that a phase difference occurs between the signals of the sensor unit and the signals of the sensor unit so that it is possible to detect the rotational direction of the rotary bezel. A data-signal generating element generates a data signal on the basis of the detected rotational angle and the pulse count generated by the pulse-count detection sensor unit