Bonding contents on separate storage media

• US 9,384,210 B2
• Filed: 07/30/2015
• Issued: 07/05/2016
• Est. Priority Date: 11/09/2004
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Gandolph, Dirk, Hoerentrup, Jobst, Ostermann, Ralf, Herpel, Carsten, Janssen, Uwe, Peters, Hartmut, Schewzow, Andrej, Winter, Marco
• Primary Examiner(s): Trujillo, James
• Assistant Examiner(s): Le, Jessica N
• Application Number:
  US14/814,128
• Publication Number:
  US 20150347720A1
• Time in Patent Office: 341 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/10 File systems; File servers
• CPC Class Codes: G06F 16/188 Virtual file systems
• CPC Class Codes: G06F 16/20 of structured data, e.g. relational data
• CPC Class Codes: G06F 21/109 by using specially-adapted hardware at the client
• CPC Class Codes: G06F 21/602 Providing cryptographic facilities or services
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• 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 20/00695 said measures preventing that data are read from the recording medium
• CPC Class Codes: G11B 2020/1288 Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
• CPC Class Codes: G11B 2220/213 Read-only discs
• 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 2220/2562 DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier
• CPC Class Codes: G11B 27/329 on a disc [VTOC]
• CPC Class Codes: H04L 9/30 Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy

Abstract

Local storage on player instruments provides the ability for adding further amendments and most recent supplements to the optical disc content. A problem arising with this technically applicable possibility is the protection of copyrights bound to disc and supplement data. The present invention describes a technique to ensure a security framework that is able to handle this, by creating a virtual file system (VFS) by merging optical disc data and local storage data based upon a common identifier.

Claims

1. A non-transitory storage medium that, when inserted in a playback device, causes the playback device to perform a method for generating a virtual file system

using first data from the non-transitory storage medium and second data from a second non-transitory storage medium,

wherein the non-transitory storage medium comprises a plurality of titles and a title encompasses at least one movie object or Java object,

wherein a movie object describes a video scene, subtitle stream or graphic animation stream and wherein a Java object describes a Java executable file that may run on a Java Virtual Machine and comprises an Application Management Table that points to a Java archive file, the method comprising:

determining from the non-transitory storage medium a first identifier;

selecting a title from said plurality of titles,

and upon said selecting a title performing steps of

determining that on the second storage medium,

in a first directory according to said first identifier,

one or more files related to the selected title and the first identifier are available and authorized, and

compiling a virtual file system that comprises files from the non-transitory storage medium

and that further comprises from the second storage medium only said files related to the selected title and the first identifier,

wherein said determining that a file is authorized comprises

retrieving from the first or the second storage medium a signature of the file,

decrypting the retrieved signature using a public key of an asymmetric encryption method, and

using the decrypted signature for verifying that the file is authorized

and wherein said Java executable file when running on the Java Virtual Machine creates or writes new files under the first directory;

the method further comprising;

retrieving from the non-transitory storage medium a second identifier,

wherein said determining that on the second storage medium one or more files related to the selected title and the first identifier are available comprises

determining that one or more of said files available on the second storage medium are located either in a first directory according to the first identifier or in a second directory according to the second identifier,

the second directory being located in said first directory; and

retrieving a certificate from the non-transitory storage medium or the second storage medium,

and decrypting the certificate, whereby said public key is obtained.