CPS UNIT MANAGEMENT IN THE DISC FOR DOWNLOADED DATA

• US 20090269042A1
• Filed: 03/31/2009
• Published: 10/29/2009
• Est. Priority Date: 03/31/2008
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.), Sony Corporation Of America (Sony Group Corp.), Sony Pictures Entertainment Incorporated (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.), Sony Corporation Of America (Sony Group Corp.), Sony Pictures Entertainment Incorporated (Sony Group Corp.)
• Inventors: Takashima, Yoshikazu, Hattori, Shinobu, Anbananthan, Saravana Prabhu
• Granted Patent: US 8,873,934 B2
• Time in Patent Office: Days
• US Class Current: 386/241
• CPC Class Codes: G06F 13/30 with priority control
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• 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 20/00362 the key being obtained from a media key block [MKB]
• CPC Class Codes: G11B 20/00427 advanced access content system [AACS]
• 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 20/00731 involving a digital rights management system for enforcing a usage restriction
• CPC Class Codes: G11B 20/00862 wherein the remote server can grant the permission to use a content
• CPC Class Codes: G11B 20/00869 wherein the remote server can deliver the content to a receiving device
• CPC Class Codes: G11B 2220/2516 Hard disks
• CPC Class Codes: G11B 2220/2541 Blu-ray discs; Blue laser DVR discs
• CPC Class Codes: G11B 2220/41 Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
• CPC Class Codes: H04N 5/85 on discs or drums

Abstract

An information processing device comprising: a data processing unit configured to load a disk, which stores content that is divided into content usage control units, and to execute processes for reading the content; and a local storage unit configured to store subsequential data obtained and/or generated subsequentially, wherein the data processing unit is configured to perform processes to: select a title that is an index for reading the subsequential data from dummy titles stored in advance on the disk; set the title as a title for the subsequential data; and store the subsequential data in the local storage unit.

Claims

1. An information processing device comprising:

a data processing unit configured to load a disk, which stores content that is divided into content usage control units, and to execute processes for reading the content; and

a local storage unit configured to store subsequential data obtained and/or generated subsequentially,

wherein the data processing unit is configured to perform processes to;

(1) select a title that is an index for reading the subsequential data from dummy titles stored in advance on the disk;

(2) set the title as a title for the subsequential data; and

(3) store the subsequential data in the local storage unit.

2. An information processing device as set forth in claim 1, wherein:

the content stored on the disk has settings wherein an association is defined with usage control information; and

the data processing unit sets, as a membership unit of the subsequential data, a unit that is associated with usage control information that matches the usage control status of the subsequential data.

3. An information processing device as set forth in claim 2, wherein:

the content stored on the disk has a setting to determine whether there is a correspondence to encrypted content is divided by said unit;

wherein if the subsequential data is encrypted data, then a unit corresponding to encrypted content is set as a membership unit, and if the subsequential data is non-encrypted data, then a unit corresponding to non-encrypted content is set as a membership unit.

4. An information processing device as set forth in claim 1, wherein the data processing unit sets a membership unit of the subsequential data in accordance with unit specifying information received from a server.

5. An information processing device as set forth in claim 1, wherein:

a dummy title that is recorded in advance on the disk has a structure that is set as a title that evokes a program for reading subsequential data, recorded on said disk; and

the data processing unit evokes a program for reading the subsequential data depending on the specification of a title that is set as a title for the subsequential data, to execute a process for reading subsequential data that is stored in the local storage unit.

6. An information processing device as set forth in claim 5, wherein:

the program for reading subsequential data is a program that is set to be evoked by different titles of a plurality of different units that are set on the disk; and

the data processing unit is configured to evoke a program for reading the subsequential data, based on specifications of different titles of a plurality of different units, to execute a process for reading subsequential data.

7. An information processing device as set forth in claim 5, wherein

the data processing unit is configured to perform a process for receiving an updating program for reading subsequential data that is stored on the disk, and to perform a process for storing in the local storage unit, to execute a process of storing the updated program for reading subsequential data, stored in the local storage unit, into the local storage unit as a setting that is evoked by the specification of the dummy title.

8. An information processing device as set forth in claim 1, wherein

the data processing unit is configured to identify a unit belonging to the content being read in the information processing device, and to perform a read content limiting process that selects, as read-enabled content, only those subsequential data belonging to the same unit as the identified unit.

9. An information processing device as set forth in claim 8, wherein

the data processing unit executes the read content limiting process in accordance with a program for reading the subsequential data.

10. An information processing device as set forth in claim 1, wherein

the data processing unit is configured to structure a virtual file system to perform parallel reading of the content stored on the disk and subsequential data stored in the local storage unit.

11. An information processing device as set forth in claim 10, wherein

the filenames of the subsequential data stored in the local storage unit are converted in accordance with a file named conversion table when the data processing unit structures the virtual file system.

12. An information recording medium comprising:

data including stream data to be read and titles that are indexes for specifying content reading,

wherein said data is divided into units as usage control units,

wherein the titles include dummy titles that are not set as indexes for reading stream data that has been recorded on the information recording medium but are titles that can be set as indexes in association with subsequential data that is stored in a local storage unit of the information processing device after being acquired and/or generated subsequentially by the information processing device to enable the reading of subsequential data in response to a read instruction for a title that is associated with the subsequential data.

13. An information recording medium as set forth in claim 12, wherein

usage control information for the usage control unit is associated with content stored on the information recording medium,

wherein the dummy titles are set for each individual usage control unit that is set in the information recording medium,

wherein the selection of a title that is associated with subsequential data in the information recording device is set to be selectable from a dummy title that belongs to a unit that has usage control information matching the state of usage control of the subsequential data.

14. An information recording medium as set forth in claim 12, wherein:

a program for reading subsequential data evoked by a dummy title that is stored in advance on the information recording medium; and

the information processing device, when reading the subsequential data, evokes a program for reading the subsequential data in response to the specification of a title that is set as a title for the subsequential data, to execute a process for reading subsequential data that is stored in the local storage unit.

15. An information recording medium as set forth in claim 14, wherein the program for reading the subsequential data is a program set to be evoked by different titles of a plurality of different units that are set in the information recording medium.

16. An information processing method comprising:

a subsequential data acquiring step wherein a data processing unit loads a disk storing content that is divided into content usage control units and wherein data is obtained and/or generated subsequently in an information processing device;

a title setting step wherein the data processing unit selects, from dummy titles stored in advance on the disk, a title that is an index for specifying reading of the subsequential data, and sets the title as a title for the subsequential data; and

a subsequential data storing step for storing the subsequential data in a local storage unit.

17. A program for performing processes for controlling subsequential data in an information processing device, comprising:

a subsequential data acquiring step wherein a disk storing content that is divided into usage control units is loaded into a data processing unit, and wherein data is obtained and/or generated subsequently in an information processing device;

a title setting step wherein the data processing unit selects, from dummy titles stored in advance on the disk, a title that is an index for specifying reading of the subsequential data, and sets the title as a title for the subsequential data; and

a subsequential data storing step for storing the subsequential data in a local storage unit.