Recording Device and Recording Method

• US 20080072072A1
• Filed: 06/05/2005
• Published: 03/20/2008
• Est. Priority Date: 06/09/2004
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Ishihara, Hideshi, Muraki, Kenji
• Application Number:
  US11/570,072
• Publication Number:
  US 20080072072A1
• Time in Patent Office: Days
• US Class Current: 713/193
• 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 20/00181 using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]
• CPC Class Codes: G11B 20/00188 involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00362 the key being obtained from a media key block [MKB]
• CPC Class Codes: G11B 20/00528 wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file
• CPC Class Codes: G11B 20/00753 wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 2020/10537 Audio or video recording
• CPC Class Codes: H04N 2005/91314 the copy protection signal being a pulse signal inserted in blanking intervals of the video signal, e.g. pseudo-AGC pulses, pseudo-sync pulses
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 2005/91371 the video color burst signal being modified
• CPC Class Codes: H04N 21/4112 having fewer capabilities than the client, e.g. thin client having less processing power or no tuning capabilities
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/4345 Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/44204 Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched monitoring of user activities for profile generation for accessing a video database G06F16/739; protecting generic digital content where the protection is independent of the precise nature of the content G06F21/10; arrangements for monitoring the use made of the broadcast services in broadcast systems H04H60/31
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/781 : on disks or drums
• CPC Class Codes: H04N 5/85 : on discs or drums
• CPC Class Codes: H04N 5/907 : using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 5/913 : for scrambling ; for copy protection
• CPC Class Codes: H04N 9/8042 : involving data reduction
• CPC Class Codes: H04N 9/8063 : using time division multiplex of the PCM audio and PCM video signals

Abstract

To prevent the user from moving a content on a bound recording medium to another storage medium more than the maximum number of times permitted by its copyright holder.

A recorder includes: a bound recording section for bound-recording at least one data file and at least one management information file for a content; a control section for giving an instruction to move the content to a storage medium; and a drive for recording the content'"'"'s data on the storage medium. The management information file includes access information for accessing the data file. In response to the instruction to move, the bound recording section reads the data file of the content in accordance with the access information and outputs the content'"'"'s data, the drive records the content'"'"'s data on the storage medium, and the control section makes the access information unavailable.

Claims

1. A recorder comprising:

a bound recording section for bound-recording at least one data file and at least one management information file for a content;

a control section for giving an instruction to move the content to a storage medium; and

a drive for recording the content'"'"'s data on the storage medium,

wherein the management information file includes access information for accessing the data file, and

wherein in response to the instruction to move,

the bound recording section reads the data file of the content in accordance with the access information and outputs the content'"'"'s data,

the drive records the content'"'"'s data on the storage medium, and

the control section makes the access information unavailable.

2. The recorder of claim 1, wherein the control section generates access information for accessing the content'"'"'s data that has been recorded on the storage medium, and

wherein the drive records the generated access information on the storage medium.

3. The recorder of claim 1, wherein the management information file includes storage medium information that specifies a storage medium, to which the content'"'"'s move has been permitted, and

wherein the bound recording section reads the storage medium information and the control section generates and outputs data to present the storage medium information that has been read.

4. The recorder of claim 1, wherein the management information file includes format information that specifies a recording format, in which the move has been permitted, and

wherein the bound recording section reads the format information and the control section generates and outputs data to present the format information that has been read.

5. The recorder of claim 1, wherein the data file has been encrypted, and

wherein the management information file includes key information for decrypting the data file, and

wherein the bound recording section reads the key information, and

wherein the drive decrypts the data file with the key information that has been read, encrypts the data file again with another key information different from the key information, and then records the content'"'"'s data on the storage medium.

6. The recorder of claim 1, wherein the data file has been encrypted, and

wherein the management information file includes key information for decrypting the data file, and

wherein the bound recording section reads the key information, and

wherein the drive further records the read key information on the storage medium.

7. The recorder of claim 1, wherein the bound recording section bound-records a number of management information files, the number being specified by the content'"'"'s provider.

8. The recorder of claim 1, wherein the bound recording section bound-records a plurality of data files and pieces of management information, each of which has a one-to-one relationship with an associated one of the data files, and

wherein the control section gives the instruction to move and designates one of the data files that includes the content to be moved, and

wherein the bound recording section reads and outputs the designated data file, and

wherein the drive records the read data on the storage medium, and

wherein the control section makes unavailable at least the access information of the management information file associated with the data file that has been read.

9. The recorder of claim 1, wherein the bound recording section bound-records a first management information file, a second management information file, and a data file, and

wherein each of the first and second management information files includes access information for accessing the data file, and

wherein the control section gives an instruction to move the content based on the first management information file, and

wherein the bound recording section reads the data file in accordance with the access information of the first management information file, and

wherein the control section makes at least the access information of the first management information file unavailable.

10. The recorder of claim 9, wherein the control section further gives an instruction to move the content, and

wherein the bound recording section reads the data file in accordance with the access information of the second management information file, and

wherein the control section makes at least the access information of the second management information file unavailable.

11. The recorder of claim 1, wherein the bound recording section bound-records a first data file, a second data file and at least one management information file, and

wherein the at least one management information file includes first access information for accessing the first data file and second access information for accessing the second data file, and

wherein the control section gives an instruction to move a content included in the first data file, and

wherein the bound recording section selects a first management information file from the at least one management information file, and reads the first data file in accordance with the first access information included in the first management information file, and

wherein the control section makes unavailable at least the second access information of the first management information file as well as the first access information thereof.

12. The recorder of claim 11, wherein the control section further gives an instruction to move the content included in one of the first and second data files, and

wherein the bound recording section selects a second management information file, which is different from the first management information file, and reads the selected data file in accordance with the access information thereof, and

wherein the control section makes unavailable at least the first and second access information of the second management information file.

13. A recording method comprising the steps of:

bound-recording at least one data file for a content;

bound-recording at least one management information file including access information for accessing the data file;

giving an instruction to move the content to a storage medium;

reading the data file of the content in accordance with the access information and outputting the content'"'"'s data in response to the instruction to move;

recording the content'"'"'s data on the storage medium; and

making the access information unavailable.