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. 17, 2001
Filed:
Apr. 05, 2000
Applicant:
Inventors:
Hiroshi Morohoshi, Tokorozawa, JP;
Shoichi Nagatomo, Fussa, JP;
Assignee:
Casio Computer Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G04C 1/102 ;
U.S. Cl.
CPC ...
G04C 1/102 ;
Abstract
A wristwatch receives time-of-day information transmitted in the form of an infrared signal and then calculates the difference between the received time-of-day information and its time data. A decision is made as to whether the difference is not less than or less than a predetermined value. If the difference is less than the predetermined value, the accuracy of the received data and the accuracy set in the wristwatch are determined by referring to the types of time-measuring references. When the received data is higher accurate, the current time data stored by the first storage area is corrected by the received time data.