Invention Grant
US08351301B2 Electronic timepiece and control method for an electronic timepiece 有权
电子钟表及电子表的控制方法

  • Patent Title: Electronic timepiece and control method for an electronic timepiece
  • Patent Title (中): 电子钟表及电子表的控制方法
  • Application No.: US13526890
    Application Date: 2012-06-19
  • Publication No.: US08351301B2
    Publication Date: 2013-01-08
  • Inventor: Teruhiko Fujisawa
  • Applicant: Teruhiko Fujisawa
  • Applicant Address: JP Tokyo
  • Assignee: Seiko Epson Corporation
  • Current Assignee: Seiko Epson Corporation
  • Current Assignee Address: JP Tokyo
  • Priority: JP2008-007132 20080116
  • Main IPC: G04C11/02
  • IPC: G04C11/02
Electronic timepiece and control method for an electronic timepiece
Abstract:
An electronic timepiece includes a reception unit that receives satellite signals transmitted from positioning information satellites; a time information generating unit that generates an internal time; an automatic reception processing unit that activates the reception unit when predefined conditions are met to perform automatic reception processing, and performs simple time correction processing including acquiring time information from satellite signals received from one of the satellites, and, based thereon, correcting the internal time; and a manual reception processing unit that activates the reception unit via operation of an external member to perform manual reception processing, and performs simple time or high precision correction processing to correct the internal time, the high precision time correction processing including acquiring time and satellite orbit information from satellite signals received from two or more of the satellites, calculating a position of the timepiece, and correcting the internal time using the time information and the position.
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