G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.21
G11B 7/09 (2006.01) G11B 7/0033 (2006.01) G11B 7/085 (2006.01) G11B 7/095 (2006.01)
Patent
CA 1313912
ABSTRACT OF THE DISCLOSURE An optical information recording apparatus comprises a recording device for condensing into a spot- like shape a light beam intensity-modulated between at least two levels which are not zero, scanning the light beam on a recording medium and recording information thereon, a detector for detecting a signal indicative of the position error between the light beam spot and the medium in the focusing direction perpendicular to the surface of the medium or the tracking direction in a plane parallel to the surface of the medium which is perpendicular to tracks formed on the medium, a servo device for correcting the position error on the basis of the detected signal, means for varying the gain of the servo device in conformity with the intensity level of the light beam, and a device for sampling and holding the detected signal as long as at least the intensity of the light beam is halfway of the shift between different levels.
573474
Kanda Shigeto
Shikichi Satoshi
Canon Kabushiki Kaisha
Ridout & Maybee Llp
LandOfFree
Optical information recording apparatus provided with means... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical information recording apparatus provided with means..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical information recording apparatus provided with means... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1212585