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

• US 6,914,874 B2
• Filed: 10/28/2003
• Issued: 07/05/2005
• Est. Priority Date: 03/10/1998
• Status: Expired due to Term

• Current Assignee: JVC Kenwood Corporation
• Original Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation)
• Inventors: Kondo, Tetsuya
• Primary Examiner(s): EDUN, MUHAMMAD N
• Application Number:
  US10/696,064
• Publication Number:
  US 20040085876A1
• Time in Patent Office: 616 Days
• Field of Search: 369/275.1, 369/275.2, 369/275.3, 369/275.4, 369/275.5, 369/283, 369/47.1, 369/53.1, 369/53.2, 369/53.21, 369/59.1, 369/59.25
• US Class Current: 369/275.1
• CPC Class Codes: G11B 19/12 by sensing distinguishing features of or on records, e.g. diameter end mark
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00094 involving measures which result in a restriction to authorised record carriers
• CPC Class Codes: G11B 20/00173 wherein the origin of the content is checked, e.g. determining whether the content has originally been retrieved from a legal disc copy or another trusted source
• CPC Class Codes: G11B 23/284 on the record carrier
• CPC Class Codes: G11B 7/00736 Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082
• CPC Class Codes: G11B 7/24094 Indication parts or information parts for identification
• CPC Class Codes: G11B 7/26 Apparatus or processes specially adapted for the manufacture of record carriers

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.

Claims

1. A recording medium used for storing first information and second information, in which:

said first information stored in said recording medium is selected from a first group of true-false judgement patterns prepared beforehand;

said second information stored in said recording medium is selected from a second group of true-false judgement patterns prepared beforehand;

said first information and said second information are independent from each other; and

a combination of said first information and said second information is necessary for performing a true-false judgement to identify a forged product,

wherein said recording medium is a disklike recording medium comprising;

a first substrate having a thickness of 0.6 mm and having a recording layer;

a second substrate having a thickness of 0.6 mm; and

an adhesive layer intervening between said first substrate and said second substrate.

2. The recording medium in accordance with claim 1, wherein said recording medium is a DVD (i.e. a digital video disk or a digital versatile disk) of 4.7 GB.

3. The recording medium in accordance with claim 1, wherein said recording medium is a phase-change type disk.

4. The recording medium in accordance with claim 1, wherein said first information is recorded in a lead-in area of said recording medium.

5. The recording medium in accordance with claim 1, wherein said second information is recorded as a bar code.

6. A playback apparatus for an information recording medium which stores first information and second information, in which:

said first information is selected from a first group of true-false judgement patterns prepared beforehand and is recorded data stored in a lead-in area of said information recording medium;

said second information is selected from a second group of true-false judgement patterns prepared beforehand and is a bar code provided on said information recording medium;

said first information and said second information are independent from each other and prepared as a combination for performing a true-false judgement to identify a forged product;

a first reading means for reading said first information from said lead-in area of said information recording medium; and

a second reading means for reading said second information from said bar code of said information recording medium.

7. A playback method for an information recording medium, comprising the steps of:

reading information stored in a predetermined area of said information recording medium by using an optical pickup device;

establishing a communication line via an internet to an external system;

and

transmitting readout information to said external system.

8. The information recording medium playback method in accordance with claim 7, wherein

in the step of transmitting said readout information to said external system, at least one of name, address, telephone number and network ID of a customer having purchased said information storing medium is transmitted.