G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/00 (2006.01) G11B 7/09 (2006.01)
Patent
CA 2137644
In a tracking or focusing servo control loop (3b, 3c, 41, 20; 3a, 42, 21), there are provided a switch element (6a; 6c) for switch-controlling a tracking or focusing error signal, and a smoothing circuit (7a; 7c) for switching passage the error signal. An amount of detected reflection from an optical recording medium (11) is monitored by a controller section (3b, 3c, 5a, 6b, 7b, 8a; 3a, 5b, 6d, 7d, 8b), and the switching action of the switch element is ON/OFF-controlled by the controller section so as to maintain a servo loop gain at a predetermined standard. Thus, it is possible to maintain a constant servo loop gain without being influenced by variation in the laser light amount or difference in reflectivity characteristics of the recording layers of individual optical recording media, and constantly stable tracking servo control and/or focusing servo control can be performed.
Furuya Yonezo
Kimura Yasuyuki
Noda Kazuo
Yamazaki Koichi
Gowling Lafleur Henderson Llp
Nippon Conlux Co. Ltd.
LandOfFree
Servo control technique for an optical recording and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Servo control technique for an optical recording and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo control technique for an optical recording and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1635645