Disklike recording media, a method for detecting forged disks, an anti-forgery system for performing a true-false judgement based on information collected from the recording media, and a manufacturing apparatus for recording information in the disks
AssigneeVictor Company of Japan, Ltd.
InventorTetsuya Kondo
Life of this patent
Estimating the term…
Abstract
A recording medium includes first information selected from a plurality of information patterns and second information selected from another plurality of information patterns for the true-false judgement. A true-false judging device performs a statistic analysis when any coincidence is found between the readout combination of the first and second information and registered combination patterns, to identify an inspected recording medium as a forged product based on the result of the statistic analysis.
Claims17
A recording medium comprising:
- first information selected from a plurality of information patterns for a true-false judgement;
- and
- second information selected from another plurality of information patterns for the true-false judgement.
A system for detecting forged products of recording media, said system comprising:
- reading means for reading first information and second information from an inspected recording medium;
- memory means for storing a plurality of registered combination patterns for a true-false judgement;
- and
- true-false judging means for identifying said inspected recording medium as a forged product when no coincidence is found between a readout combination of said first and second information and said registered combination patterns.
An apparatus for detecting forged products of recording media, said apparatus comprising:
- reading means for reading first information and second information from an inspected recording medium;
- transmitting means for transmitting a readout combination of said first and second information to a true-false judging apparatus;
- receiving means for receiving a true-false judgement result from said true-false judging apparatus;
- and
- output means for outputting said true-false judgement result.
An apparatus for detecting forged products of recording media, said apparatus comprising:
- memory means for storing a plurality of registered combination patterns for a true-false judgement;
- receiving means for receiving a combination of first and second information read out from an inspected recording medium;
- and
- true-false judging means for identifying said inspected recording medium as a forged product when no coincidence is found between the readout combination of said first and second information and said registered combination patterns.
A manufacturing apparatus for a disklike recording medium, said manufacturing apparatus comprising:
- first recording means for recording main information including first information on a first surface of the disklike recording medium, said first information being selected from a plurality of information patterns for a true-false judgement;
- and
- second recording means for recording second information on a second surface of the disklike recording medium, said second information being selected from another plurality of information patterns for the true-false judgement.
Dependencies are inferred from the claim text.