Invention Grant
- Patent Title: Timepiece and timepiece motor control method
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Application No.: US16736444Application Date: 2020-01-07
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Publication No.: US11209779B2Publication Date: 2021-12-28
- Inventor: Kenji Ogasawara , Tamotsu Maesawa
- Applicant: Seiko Instruments Inc.
- Applicant Address: JP Chiba
- Assignee: Seiko Instruments Inc.
- Current Assignee: Seiko Instruments Inc.
- Current Assignee Address: JP Chiba
- Agency: Crowell & Moring LLP
- Priority: JPJP2019-003262 20190111
- Main IPC: G04C3/14
- IPC: G04C3/14 ; H02P8/02

Abstract:
There is provided a timepiece including a high-load rotation position detection unit that detects a high-load rotation position that is a rotation position of a wheel when a rotational load of a rotor that transmits rotor's rotation to the wheel and rotates a pointer clockwise is greater than that during normal hand movement and a drive signal output unit that outputs a sub-drive signal having energy greater than that of a main drive signal that is output during the normal hand movement and less than that of an auxiliary drive signal that is output when the rotor does not rotate by the main drive signal in a case where the rotation position of the wheel is the high-load rotation position.
Public/Granted literature
- US20200225620A1 TIMEPIECE AND TIMEPIECE MOTOR CONTROL METHOD Public/Granted day:2020-07-16
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