公开(公告)号：US10890879B2

公开(公告)日：2021-01-12

申请号：US16082536

申请日：2017-03-15

Applicant: CITIZEN WATCH CO., LTD.

Inventor： Yusuke Hirota ,  Masayuki Araki ,  Akiyoshi Kondoh ,  Masato Kanazawa

IPC: G04G19/06 ,  G04C10/04 ,  G04G19/12 ,  G04G21/04 ,  G04G19/00 ,  G04G21/00 ,  G06F1/3287

Abstract: Provided is an electronic clock including: a power generator; a secondary battery, which is to be charged with electric power generated by the power generator; a balance information transmitter configured to transmit, to a computer, balance information relating to a transition of a power generation amount or a charging balance of the secondary battery; a connection time period setting module configured to set a connection time period of a connection with the computer based on the balance information; and a communication controller configured to control a start and an end of communication to/from the computer based on the connection time period.