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.

Date of Patent:
Jun. 09, 2008

Filed:

Mar. 06, 2001
Applicants:

Koichi Sato, Tokyo, JP;

Fumio Kanno, Tokyo, JP;

Inventors:

Koichi Sato, Tokyo, JP;

Fumio Kanno, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F 5/00 (2005.12); G06F 1/04 (2005.12); G05B 19/40 (2005.12); H02P 8/00 (2005.12);
U.S. Cl.
CPC ...
Abstract

An electronic watchwhich comprises a power supplyand a watch circuit. The watch circuitcomprises an oscillator circuit, a frequency divider circuit, a drive pulse generation means, a drive motorwhich, in response to a drive pulse Pthat is output by the above-noted drive pulse generation means, drives at least one of the hour/minute, second, and functional hands including chronograph hands, a drive circuit meanswhich controls the drive of the drive motor, a drive circuit control meanswhich controls the above-noted drive circuit means, and a control condition detection meanswhich is connected to the above-noted drive circuit control meansand which detect the control condition in the drive circuit control means, the control condition detection meansbeing provided with a non-proper condition detection meanswhich senses the occurrence of a condition in which it is not possible to properly drive the above-noted drive motorunder a prescribed condition in a prescribed control mode currently being executed, and a control mode change-instructing meanswhich, in response to a detection signal of the above-noted non-proper condition detection means, issues an instruction to the drive circuit control meansto change the control mode currently being executed.


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