FR2779263B1 - Procede et dispositif de correction automatique du seuil de detection des donnees enregistrees sur un disque optique numerique - Google Patents
Procede et dispositif de correction automatique du seuil de detection des donnees enregistrees sur un disque optique numeriqueInfo
- Publication number
- FR2779263B1 FR2779263B1 FR9806896A FR9806896A FR2779263B1 FR 2779263 B1 FR2779263 B1 FR 2779263B1 FR 9806896 A FR9806896 A FR 9806896A FR 9806896 A FR9806896 A FR 9806896A FR 2779263 B1 FR2779263 B1 FR 2779263B1
- Authority
- FR
- France
- Prior art keywords
- threshold
- detection
- optical disc
- data recorded
- automatic correction
- 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.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- 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
- G11B20/10009—Improvement or modification of read or write signals
-
- 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
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
- G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
-
- 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
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
- G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
- G11B2020/1281—Servo information
- G11B2020/1282—Servo information in embedded servo fields
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/005—Reproducing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9806896A FR2779263B1 (fr) | 1998-06-02 | 1998-06-02 | Procede et dispositif de correction automatique du seuil de detection des donnees enregistrees sur un disque optique numerique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9806896A FR2779263B1 (fr) | 1998-06-02 | 1998-06-02 | Procede et dispositif de correction automatique du seuil de detection des donnees enregistrees sur un disque optique numerique |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2779263A1 FR2779263A1 (fr) | 1999-12-03 |
FR2779263B1 true FR2779263B1 (fr) | 2000-08-25 |
Family
ID=9526927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9806896A Expired - Lifetime FR2779263B1 (fr) | 1998-06-02 | 1998-06-02 | Procede et dispositif de correction automatique du seuil de detection des donnees enregistrees sur un disque optique numerique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2779263B1 (fr) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5204848A (en) * | 1991-06-17 | 1993-04-20 | International Business Machines Corporation | Adjusting amplitude detection threshold by feeding back timing-data phase errors |
JP2807362B2 (ja) * | 1991-09-30 | 1998-10-08 | 株式会社東芝 | 情報再生装置 |
JP3015832B2 (ja) * | 1995-06-27 | 2000-03-06 | 富士通株式会社 | データ再生装置 |
-
1998
- 1998-06-02 FR FR9806896A patent/FR2779263B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2779263A1 (fr) | 1999-12-03 |
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