Analogue electronic clock and motor control circuit

Details Analogue electronic clock and motor control circuit Analogue electronic clock and motor control circuit

2009-09-21

2011-11-22

Kayes, Sean (Department: 2833)

Horology: time measuring systems or devices

Electrical time base

Solid state oscillating circuit type

C368S160000, C318S696000

Reexamination Certificate

active

08064294

ABSTRACT:
The present invention can rotationally drive a motor with main drive pulses corresponding to loads with the simple constitution without using a counter circuit. A control circuit, in driving a motor with a second main drive pulse, when a rotation detection signal which is indicative of the rotation of the motor is detected by a rotation detection circuit after a predetermined reference time elapses, continues rotational driving of the motor with the second main drive pulse, when the rotation detection signal is detected before the predetermined reference time elapses, changes the rotational driving of the motor with a first main drive pulse having a shorter pulse width than the second main drive pulse, and when the rotation detection signal is not detected, forcibly rotationally drives the motor with a correction drive pulse having a largest pulse width and, thereafter, rotationally drives the motor with the first main drive pulse.

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patent: 6999381 (2006-02-01), Fujisawa et al.
patent: 7283428 (2007-10-01), Ogasawara
patent: 2002/0186622 (2002-12-01), Ogasawara
patent: 53132384 (1978-11-01), None
patent: 58066089 (1983-04-01), None
patent: 59012380 (1984-01-01), None
patent: 53085467 (1998-07-01), None

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