Patent Number: 8,721,170

Title: Stepping motor control circuit, movement, and analogue electronic timepiece

Abstract: A rotation detection unit configured to detect the condition of rotation of a stepping motor on the basis of an induced signal generated in a drive coil of the stepping motor in a detection period in which the condition of rotation of the stepping motor is detected and a control unit configured to rotationally drive the stepping motor by supplying a drive signal to the drive coil of the stepping motor within the driving period in which the stepping motor is rotationally driven are provided. The driving period and part of the detection period are configured to overlap with each other in a first time interval, and the control unit stops supply of the drive signal to the drive coil of the stepping motor in the first time interval.

Inventors: Manaka; Saburo (Chiba, JP), Ogasawara; Kenji (Chiba, JP), Sakumoto; Kazumi (Chiba, JP), Honmura; Keishi (Chiba, JP), Yamamoto; Kosuke (Chiba, JP)

Assignee: Seiko Instruments Inc.

International Classification: G04B 18/00 (20060101)

Expiration Date: 5/13/12018