# US 8,572,314 B2 · Determining an identification of a DVD based on a format of the DVD

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- Number: US 8,572,314 B2
- Document ID: US8572314B2
- Status: Granted
- Kind: B2
- Application number: 12/330,533
- Filed: 2008-12-09
- Published: 2010-06-10
- Granted: 2013-10-29
- Earliest claimed: 2008-12-09
- Assignees: Microsoft Corporation
- Applicants: Aayaz Bhorania; Kyunga Lee
- Inventors: Aayaz Bhorania; Kyunga Lee
- Web page: https://patentgrep.com/patent/US8572314B2

## CPC

- G11B 7/007: Arrangement of the information on the record carrier, e.g. form of tracks {, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track}
- 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)}
- G11B 20/00181: {using a content identifier, e.g. an international standard recording code [ISRC] or a digital object identifier [DOI]}
- G11B 20/1262: {with more than one format/standard, e.g. conversion from CD-audio format to R-DAT format}
- G11B 27/11: by using information not detectable on the record carrier
- G06F 3/0638: {Organizing or formatting or addressing of data}
- G06F 2212/2112: with a removable carrier, e.g. DVD
- G11B 20/12: Formatting, e.g. arrangement of data block or words on the record carriers {(within interface between computers and data recorders G06F3/06)}
- G11B 20/1217: {on discs}
- G11B 2220/2541: Blu-ray discs; Blue laser DVR discs
- G11B 2220/2562: DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
- G11B 2220/2579: HD-DVDs [high definition DVDs]; AODs [advanced optical discs]
- G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A system, method and computer-readable storage media for digital versatile disc (DVD) identification. Media content from a DVD can be accessed and a format of the media content can be identified. An identification for the media content can be determined based upon the format. A first DVD format may be identified by matching a sequence of symbols on a DVD to format data. Content stored on the DVD in a first location that is used to generate IDs for the first DVD format may be referenced, and the content hashed to generate an ID for the DVD. The first location can be identified by referencing ID processing data that also identified other locations used to generate IDs for different DVD formats. Portions of the media content that are accessed can include directory names, folder names, or file names.

## Claims

### Claim 1

A method comprising:
identifying a first DVD format of a DVD by locating a specific sequence of symbols on the DVD and matching the specific sequence of symbols on the DVD to format data, the format data comprising a plurality of digital versatile disc (DVD) formats and corresponding symbols that identify individual DVD formats including the first DVD format;
referencing content stored on the DVD in a first location that is used to generate identifications for the first DVD format, the first location being identified by referencing identification (ID) processing data that also identifies other locations that are used to generate identifications for DVD formats other than the first DVD format; and
hashing the content stored on the DVD in the first location to generate an identification for the DVD.

### Claim 2 (depends on 1)

The method of claim 1, wherein the format data is a format datatable.

### Claim 3 (depends on 1)

The method of claim 1, wherein the ID processing data is an ID processing datatable.