Method of managing the copying of contents-representing data

• US 20020181355A1
• Filed: 05/28/2002
• Published: 12/05/2002
• Est. Priority Date: 05/31/2001
• Status: Abandoned Application

• Current Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation)
• Original Assignee: Victor Company of Japan Limited (JVC Kenwood Corporation)
• Inventors: Fuchigami, Norihiko, Shikunami, Juichi
• Application Number:
  US10/155,728
• Publication Number:
  US 20020181355A1
• Time in Patent Office: Days
• 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 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00666 involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
• CPC Class Codes: G11B 20/00688 said measures preventing that a usable copy of recorded data can be made on another medium
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources

Abstract

In a method of managing the copying of data representing contents, contents and a copyright number given from a copyright holder to the user regarding the contents are sent to a user as virtual contents files whose number is equal to the copyright number. In cases where the user copies the contents from a source recording medium to a destination recording medium, the virtual contents files are moved from the source recording medium and are erased therefrom.

Claims

1. A method of managing the copying of data representing contents, comprising the steps of:

sending, to a user, contents and a copyright number given from a copyright holder to the user regarding the contents as virtual contents files whose number is equal to the copyright number; and

in cases where the user copies the contents from a source recording medium to a destination recording medium, moving the virtual contents files from the source recording medium and erasing the virtual contents files from the source recording medium.

3. A method as recited in claim 1, wherein the moving step comprises decrementing a copyright number in the source recording medium, and incrementing a copyright number in the destination recording medium.

2. A method of managing the copying of data representing contents, comprising the steps of:

sending, to a user, contents and a copyright number given from a copyright holder to the user regarding the contents; and

in cases where the user copies the contents from a source recording medium to a destination recording medium, moving the virtual contents files and the copyright number from the source recording medium as virtual contents files whose number is equal to the copyright number, and erasing the virtual contents files from the source recording medium.

4. A recording and reproducing apparatus comprising:

means for moving a set of contents from a source recording medium to a destination recording medium as virtual contents files whose number is equal to a copyright number given from a copyright holder to a user;

means for erasing the virtual contents files from the source recording medium; and

means for changing the copyright number in accordance with a direction of moving the virtual contents files and a number of the moved virtual contents files.

5. A recording and reproducing apparatus of claim 4 which comprises a server for copying the set of contents onto another recording medium.

6. A recording and reproducing apparatus of claim 4 which comprises a portable recording medium.

7. A recording and reproducing apparatus of claim 4 which comprises an apparatus for recording and reproducing information on and from an optical disc.

8. A reproducing apparatus comprising:

means for moving a set of contents from a source recording medium to a destination recording medium as virtual contents files whose number is equal to a copyright number given from a copyright holder to a user;

means for erasing the virtual contents files from the source recording medium; and

means for inhibiting playback of contents related to the virtual contents files when the copyright number is equal to 0.

9. A method of managing the copying of data representing contents, comprising the steps of:

sending, to a user, (1) first contents, (2) an ID of the first contents, and (3) a copyright number given from a copyright holder to the user regarding the first contents as virtual contents files whose number is equal to the copyright number;

in cases where the user copies the first contents from a source recording medium to a destination recording medium, collating the ID of the first contents with an ID of second contents already recorded on the destination recording medium;

when the ID of the first contents is different from the ID of the second contents, moving the first contents, the ID of the first contents, and the copyright number; and

when the ID of the first contents is equal to the ID of the second contents, incrementing a copyright number in the destination recording medium without moving the first contents to move and erase the virtual contents files from the source recording medium.

10. A method as recited in claim 9, further comprising the step of, in cases where the first contents lacks an ID, adding an ID to the first contents and recording the ID-added first contents on the destination recording medium.

11. A method as recited in claim 9, further comprising the steps of:

recording a list of IDs of recorded contents on the destination recording medium; and

collating the ID of the first contents with the IDs in the list at a time of copying.

13. A recording and reproducing apparatus as recited in claim 12, further comprising means for, in cases where the first contents lacks an ID, adding an ID to the first contents and recording the ID-added first contents on the destination recording medium.

14. A recording and reproducing apparatus as recited in claim 12, further comprising:

means for recording a list of IDs of recorded contents on the destination recording medium; and

means for collating the ID of the first contents with the IDs in the list at a time of copying.

15. A recording and reproducing apparatus as recited in claim 12, wherein the destination recording medium comprises an optical disc.

17. A copy management system as recited in claim 16, further comprising:

seventh means for, when the third means decides that the identification signal read out by the first means and the identification signal read out by the second means are not equal, copying the file except the copy permission number from the source recording medium onto the destination recording medium to record a copy file on the destination recording medium;

eighth means for, in cases where the seventh means executes the copying, decrementing the copy permission number in the file in the source recording medium by a preset number; and

ninth means for, in cases where the seventh means executes the copying, setting a copy permission number in the copy file in the destination recording medium to the preset number.

12. A recording and reproducing apparatus comprising:

means for sending, to a user, (1) first contents, (2) an ID of the first contents, and (3) a copyright number given from a copyright holder to the user regarding the first contents as virtual contents files whose number is equal to the copyright number;

means for, in cases where the user copies the first contents from a source recording medium to a destination recording medium, collating the ID of the first contents with an ID of second contents already recorded on the destination recording medium;

means for, when the ID of the first contents is different from the ID of the second contents, moving the first contents, the ID of the first contents, and the copyright number; and

means for, when the ID of the first contents is equal to the ID of the second contents, incrementing a copyright number in the destination recording medium without moving the first contents to move and erase the virtual contents files from the source recording medium.

16. A copy management system comprising:

first means for reading out an identification signal from a file in a source recording medium;

second means for reading out an identification signal from a file in a destination recording medium;

third means for deciding whether or not the identification signal read out by the first means and the identification signal read out by the second means are equal;

fourth means for, when the third means decides that the identification signal read out by the first means and the identification signal read out by the second means are equal, decrementing a copy permission number in the file in the source recording medium by a predetermined number and incrementing a copy permission number in the file in the destination recording medium by the predetermined number;

fifth means for inhibiting read-out of the file from the source recording medium when the copy permission number in the file in the source recording medium is equal to 0; and

sixth means for inhibiting read-out of the file from the destination recording medium when the copy permission number in the file in the destination recording medium is equal to 0.