Optical disk and optical disk reproduction apparatus and...

Details Optical disk and optical disk reproduction apparatus and... Optical disk and optical disk reproduction apparatus and...

G - Physics

11

B

G11B 19/02 (2006.01) G11B 7/007 (2006.01) G11B 19/12 (2006.01) G11B 23/28 (2006.01)

Patent

CA 2366223

An optical disk includes a feature forming area 11 and a criterion recording area 12. The feature forming area 22 is an area provided with physical features used for determining whether it is an authorized optical disk or not. The criterion recording area 12 is an area having recorded therein the data of a determination criterion, i.e., a criterion by which it is determined whether the optical disk has been produced in an authorized manner or not on the basis of the physical feature. An optical disk reproduction apparatus detects the physical features provided in the feature forming area 11, and reads the determination criterion recorded in the criterion recording area 12. Furthermore, based on the determination criterion which has been read, the optical disk reproduction apparatus determines whether or not the detected physical features are those provided for an authorized optical disk. Thus, the optical disk reproduction apparatus can determine whether or not the optical disk has been copied in an unauthorized manner.

Affiliated with

Also associated with

Rating

Optical disk and optical disk reproduction apparatus 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 Optical disk and optical disk reproduction apparatus and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical disk and optical disk reproduction apparatus and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1671301