G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 7/13 (2006.01) G11B 7/00 (2006.01) G11B 7/0037 (2006.01) G11B 19/12 (2006.01) G11B 23/40 (2006.01) G11B 23/42 (2006.01) G11B 7/085 (2006.01) G11B 7/09 (2006.01)
Patent
CA 2191536
For initializing and setting operation mode of devices automat- ically, an automatic type discrimination system of an optical disk mounted on a optical disk unit of the invention comprises: reflection measurement means (3) for measuring reflectivity (101) of back surface of the optical disk (1) provided on an opposite side of the optical disk (1) to an optical head (2); focus sum signal converting means (4) for outputting a level of a focus sum signal (102) during focus searching operation; tracking signal converting means (5) for outputting a peak to peak value of a tracking signal (103); and a microcomputer (6) for estimating material, layer number and recording density of the optical disk (1) by comparing the reflectivity (101), the level of the focus sum signal (102) and the peak to peak value of the tracking signal (103), with reference values prepared therein.
Corporation Nec
G. Ronald Bell & Associates
LandOfFree
A method and a system of optical disk auto-discrimination does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with A method and a system of optical disk auto-discrimination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A method and a system of optical disk auto-discrimination will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2045974