Information data reproducing system, reproducing apparatus, reproducing method, data forming apparatus, and data record medium

• US 5,694,381 A
• Filed: 06/05/1996
• Issued: 12/02/1997
• Est. Priority Date: 06/06/1995
• Status: Expired due to Term

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sako, Yoichiro
• Primary Examiner(s): Edun, Muhammad N.
• Application Number:
  US08/658,503
• Time in Patent Office: 545 Days
• Field of Search: 369/48, 369/47, 369/49, 369/50, 369/54, 369/58, 369/59, 369/60, 369/32, 369/124, 369/275.2, 369/275.4
• US Class Current: 369/47.12
• 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 20/00115 wherein the record carrier stores a unique medium identifier
• CPC Class Codes: G11B 20/00768 wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 20/18 Error detection or correction; Testing , e.g. of drop-outs
• CPC Class Codes: G11B 2020/10879 the kind of record carrier being the selection criterion
• CPC Class Codes: G11B 2220/2545 CDs

Abstract

The data record medium is adapted for recording medium information as unerasable data and copy management information. The medium information represents the type of data record medium including at least a read-only type and a write enable type. The copy management information represents whether information data recorded on the data record medium is a copy enable state or a copy prohibition state. The medium information and the copy management information are detected from the data record medium. The information data is read from the data record. The controlling unit for substantially prohibits the reproducing unit from outputting the information data when the medium information satisfies both a first condition representing that the medium information is not at least the read-only type and a second condition representing that the copy management information is the copy prohibition state.

Claims

1. An information data reproducing system having a data record medium on which information data is recorded and a data reproducing apparatus for reproducing the information data from the data record medium,

wherein medium information as unerasable data and copy management information are recorded on the data record medium, the medium information representing the type of data record medium including at least a read-only type and a write enable type, the copy management information representing whether information data recorded on the data record medium is a copy enable state or a copy prohibition state, and

wherein the data reproducing apparatus comprises:

detecting means for detecting the medium information and the copy management information from the data record medium;

reproducing means for reading the information data from the data record medium and outputting the information data; and

controlling means for substantially prohibiting said reproducing means from outputting the information data when both the medium information satisfies a first condition representing that the medium information is not at least the read-only type and the copy management information satisfies a second condition representing that the copy management information is the copy prohibition state.

2. The information data reproducing system as set forth in claim 1,

wherein said controlling means is adapted for causing said reproducing means to output data representing that the reproduction of information data is prohibited instead of outputting the information data when the medium information and the copy management information satisfy the first condition and the second condition, respectively.

3. The information data reproducing system as set forth in claim 1,

wherein the data record medium has a record region that is divided into a plurality of sub-regions each for recording respective medium information.

4. The information data reproducing system as set forth in claim 1,

wherein the data record medium has a record region that is divided into a plurality of sub-regions each for recording respective copy management information.

5. An information data reproducing apparatus for reproducing information data from a data record medium on which information data and medium information are recorded as unerasable data, and copy management information is recorded, the medium information representing the type of the data record medium including at least a read-only type and a write enable type, the copy management information representing whether information data recorded on the data record medium is a copy enable state or a copy prohibition state, the apparatus comprising:

detecting means for detecting the medium information and the copy management information from the data record medium;

reproducing means for reading the information data from the data record medium and outputting the information data; and

controlling means for substantially prohibiting said reproducing means from outputting the information data when both the medium information satisfies a first condition representing that the medium information is not at least the read-only type and the copy management information satisfies a second condition representing that the copy management information is the copy prohibition state.

6. The information data reproducing apparatus as set forth in claim 5,

wherein said controlling means is adapted for causing said reproducing means to output data representing that the reproduction of information data is prohibited instead of outputting the information data when the medium information and the copy management information satisfy the first condition and the second condition, respectively.

7. The information data reproducing apparatus as set forth in claim 5,

wherein the data record medium has a record region that is divided into a plurality of sub-regions each for recording respective medium information.

8. The information data reproducing apparatus as set forth in claim 5,

wherein the data record medium has a record region that is divided into a plurality of sub-regions each for recording respective copy management information.

9. An information data reproducing method for reproducing information data from a data record medium on which information data and medium information are recorded as unerasable data, and copy management information is recorded, the medium information representing the type of the data record medium including at least a read-only type and a write enable type, the copy management information representing whether information data recorded on the data record medium is a copy enable state or a copy prohibition state, the method comprising the steps of:

detecting the medium information and the copy management information from the data record medium; and

substantially prohibiting the information data from being output when both the medium information satisfies a first condition representing that the medium information is not at least the read-only type and the copy management information satisfies a second condition representing that the copy management information is the copy prohibition state.

10. The information data reproducing method as set forth in claim 9,

wherein the prohibition step is performed by outputting data representing that the reproduction of information data is prohibited instead of outputting the information data when the medium information and the copy management information satisfy the first condition and the second condition, respectively.

11. A data forming apparatus for forming unerasable information data in a read-only region of a record medium, comprising:

means for generating medium information representing that the read-only region of the record medium is a read-only state and copy management information representing that the read-only region is a copy enable state or a copy prohibition state; and

forming means for unerasably forming the information data, the medium information, and the copy management information in the read-only region.

12. A copy prohibiting method, comprising the steps of:

unerasably forming medium information representing that a record medium is a write enable state to a writable record medium;

unerasably forming medium information representing a read-only state and copy management information representing a copy enable state or a copy prohibition state to a read-only record medium;

detecting the medium information and the copy management information from a record medium; and

substantially prohibiting information data from being output from the record medium when the medium information represents the write enable state and the copy management information represents the copy prohibition state.