Optical: systems and elements – Image stabilization
Patent
1997-09-24
1999-06-08
Nguyen, Thong
Optical: systems and elements
Image stabilization
359557, G02B 2764
Patent
active
059108592
ABSTRACT:
It is judged whether or not the pivotal movement of gimbal suspension is in a locked state. When the gimbal suspension is judged to be in the locked state, an actuator is stopped, and an operator is informed of this state, whereby the actuator can be prevented from being damaged, and the operator can rapidly respond to the locked state. An angular velocity value detected by an angular velocity sensor is read out (S6); an angle value detected by a position sensor is read out (S7); the read-out value of detedted angular velocity is subracted from an amplified value of detected angle (S9); the value resulting from the subtraction is integrated with respect to time (S10); and it is judged whether or not the gimbal suspension is in a locked state (S11). If it is consequently judged that the gimbal suspension is in the locked state, the control system is stopped (S12), and an alarm LED is flickered (S13).
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English Abstract of Japneese Reference No. 54-23554.
Oshima et al, "VHS Camcorder With Electronic Image Stabilizer", IEEE Transactions on Consumer Electronics, 35 (1989) Nov. N.4, New York.
Nagata Kouichi
Takahashi Ken'ichi
Fuji Photo Optical Co., Ltd.
Nguyen Thong
Snider Ronald R.
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