Invention Grant
- Patent Title: Radio-controlled timepiece, method of obtaining date/time information, and recording medium
-
Application No.: US15404947Application Date: 2017-01-12
-
Publication No.: US09746835B2Publication Date: 2017-08-29
- Inventor: Takeshi Matsue , Hideo Abe , Kazuaki Abe
- Applicant: CASIO COMPUTER CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee: CASIO COMPUTER CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Chen Yoshimura LLP
- Priority: JP2014-260367 20141224; JP2015-109674 20150529
- Main IPC: G04R20/06
- IPC: G04R20/06 ; G01S19/25

Abstract:
A radio-controlled timepiece includes: a radio wave reception unit that receives satellite waves and extracts an incoming code sequence encoded in the received satellite waves; a counter unit that counts a date/time of the radio-controlled timepiece; and a processor that: generates an expected code sequence containing at least a portion of a preamble code and a code generated on the basis of the date/time counted by the counter unit that are expected to be part of the incoming code sequence that is extracted, detects a match between the expected code sequence that has been generated and the incoming code sequence by sequentially comparing the expected code sequence with the incoming code sequence, and acquires a present date/time, as indicated by the satellite waves, in accordance with a detection timing of the match, as measured by the data/time counted by the counter unit.
Public/Granted literature
- US20170123383A1 RADIO-CONTROLLED TIMEPIECE, METHOD OF OBTAINING DATE/TIME INFORMATION, AND RECORDING MEDIUM Public/Granted day:2017-05-04
Information query