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:
Mar. 28, 2017
Filed:
Mar. 22, 2011
Takushi Hagita, Tokorozawa, JP;
Akira Kato, Sayama, JP;
Akinari Takada, Mitaka, JP;
CITIZEN HOLDINGS CO., LTD., Tokyo, JP;
CITIZEN WATCH CO., LTD., Tokyo, JP;
Abstract
Provided is a satellite radio-controlled watch, which is capable of holding back a receiving operation when in a posture that does not allow normal reception of a satellite signal, and is capable of performing a receiving operation under conditions varied to suit the type of reference information to be obtained. The satellite radio-controlled watch includes: a reception circuit () for receiving a satellite signal; and a controller () for sequentially detecting a received light amount of the satellite radio-controlled watch, calculating a received light variation which is an amount of change of the received light amount, and controlling the reception circuit () to start an operation of receiving the satellite signal, based on the received light variation. Alternatively, the controller () stores a condition for activating the reception circuit in order to obtain the reference information, in association with each piece of the reference information, and determines, when each piece of the reference information is obtained, whether or not the activation condition stored in association with each piece of the reference information is satisfied, and then controls the reception circuit () to start an operation of receiving the satellite signal, based on a result of the determination.