Title:
電子時計、情報更新制御方法及びプログラム
Document Type and Number:
Japanese Patent JP6939838
Kind Code:
B2
Abstract:
An electronic timepiece includes a radio wave receiver, a communication unit, a memory and a processor. The radio wave receiver receives radio waves from positioning satellites. The communication unit communicates with an external device. The memory stores a program and predicted positional information on the positioning satellites. Based on the program stored in the memory, the processor shifts the timepiece between a normal operation state and a power saving state in which operation of the timepiece is restricted, depending on a status of the timepiece. In response to an elapsed time from a valid period of the predicted positional information exceeding a predetermined reference time during the power saving state, the processor causes the communication unit to receive updated data of the predicted positional information and other information from the external device when shifting the timepiece from the power saving state to the normal operation state.
Inventors:
Yuki Onoshita
Ginger Kazuho
Ginger Kazuho
Application Number:
JP2019070299A
Publication Date:
September 22, 2021
Filing Date:
April 02, 2019
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
G04G21/04; G01S19/25; G01S19/34; G04G5/00; G04G19/00; G04R20/02
Domestic Patent References:
| JP2011128047A | ||||
| JP2017173097A | ||||
| JP2017181075A | ||||
| JP2017147760A | ||||
| JP201877252A | ||||
| JP2016121877A | ||||
| JP2010127672A | ||||
| JP201038798A | ||||
| JP201460481A | ||||
| JP201611918A |
Foreign References:
| US20110050503 |
Attorney, Agent or Firm:
Gwangyang International Patent Office