AU2002352563A1 - Optical disc authentication using alternate data modulation encoding schemes - Google Patents
Optical disc authentication using alternate data modulation encoding schemesInfo
- Publication number
- AU2002352563A1 AU2002352563A1 AU2002352563A AU2002352563A AU2002352563A1 AU 2002352563 A1 AU2002352563 A1 AU 2002352563A1 AU 2002352563 A AU2002352563 A AU 2002352563A AU 2002352563 A AU2002352563 A AU 2002352563A AU 2002352563 A1 AU2002352563 A1 AU 2002352563A1
- Authority
- AU
- Australia
- Prior art keywords
- optical disc
- data modulation
- encoding schemes
- alternate data
- modulation encoding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2002/035896 WO2004044912A1 (en) | 2002-11-08 | 2002-11-08 | Optical disc authentication using alternate data modulation encoding schemes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2002352563A1 true AU2002352563A1 (en) | 2004-06-03 |
Family
ID=32311645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2002352563A Abandoned AU2002352563A1 (en) | 2002-11-08 | 2002-11-08 | Optical disc authentication using alternate data modulation encoding schemes |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2002352563A1 (en) |
| WO (1) | WO2004044912A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4981130B2 (en) | 2006-06-12 | 2012-07-18 | トムソン ライセンシング | Method and system for embedding second code in optical disc data by variation of data modulation rule |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69614823T2 (en) * | 1995-10-09 | 2002-04-11 | Matsushita Electric Industrial Co., Ltd. | RECORDING DEVICE FOR OPTICAL DISKS |
| US6009549A (en) * | 1997-05-15 | 1999-12-28 | Cirrus Logic, Inc. | Disk storage system employing error detection and correction of channel coded data, interpolated timing recovery, and retroactive/split-segment symbol synchronization |
| KR20020020899A (en) * | 2000-03-30 | 2002-03-16 | 요트.게.아. 롤페즈 | A method for encoding a stream of bits of a binary source signal into a stream of bits of a binary channel signal |
| US6853320B2 (en) * | 2001-01-16 | 2005-02-08 | Victor Company Of Japan, Ltd. | Modulation system |
-
2002
- 2002-11-08 WO PCT/US2002/035896 patent/WO2004044912A1/en not_active Ceased
- 2002-11-08 AU AU2002352563A patent/AU2002352563A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO2004044912A1 (en) | 2004-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK6 | Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase |