Electricity: motive power systems – Motor-reversing – Armature or primary circuit control
Patent
1989-07-12
1991-01-22
Arnold, Bruce Y.
Electricity: motive power systems
Motor-reversing
Armature or primary circuit control
350604, 350606, 350633, 318466, 318468, B60R 108, G02B 718
Patent
active
049866460
ABSTRACT:
The electric rearview mirror system comprising a position sensor which outputs a position signal showing the rotational position of the mirror body, memory device which stores the position signal from the position sensor at a prescribed sampling period, and a motor control circuit which judges the rotational direction of the mirror body based on the change with time of the position signal stored in the memory device and turns off the motor when the judged direction of the motor is opposite to the rotational direction of the mirror body due to the mirror driving mechanism.
REFERENCES:
patent: 4798967 (1989-01-01), Yamana et al.
patent: 4940322 (1990-07-01), Hamamoto et al.
Hamamoto Tadanao
Hayashi Kazunari
Wakiya Tadashi
Arnold Bruce Y.
Kabushiki Kaisha Tokai Denki Seisakusho
Shafer R. D.
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