FR2336766A1 - RECORDING MEDIA, ITS MANUFACTURING AND APPLICATION - Google Patents
RECORDING MEDIA, ITS MANUFACTURING AND APPLICATIONInfo
- Publication number
- FR2336766A1 FR2336766A1 FR7639100A FR7639100A FR2336766A1 FR 2336766 A1 FR2336766 A1 FR 2336766A1 FR 7639100 A FR7639100 A FR 7639100A FR 7639100 A FR7639100 A FR 7639100A FR 2336766 A1 FR2336766 A1 FR 2336766A1
- Authority
- FR
- France
- Prior art keywords
- manufacturing
- application
- recording media
- recording
- media
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title 1
Classifications
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/128—Modulators
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0014—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form
- G11B23/0021—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture record carriers not specifically of filamentary or web form discs
- G11B23/0028—Details
-
- 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
-
- 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
- G11B7/007—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
- G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08547—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements
- G11B7/08564—Arrangements for positioning the light beam only without moving the head, e.g. using static electro-optical elements using galvanomirrors
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
-
- 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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/095—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble
- G11B7/0953—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50157200A JPS5280007A (en) | 1975-12-26 | 1975-12-26 | Video disc |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2336766A1 true FR2336766A1 (en) | 1977-07-22 |
FR2336766B1 FR2336766B1 (en) | 1984-09-14 |
Family
ID=15644380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7639100A Granted FR2336766A1 (en) | 1975-12-26 | 1976-12-24 | RECORDING MEDIA, ITS MANUFACTURING AND APPLICATION |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5280007A (en) |
CA (1) | CA1085050A (en) |
DE (1) | DE2658677A1 (en) |
FR (1) | FR2336766A1 (en) |
GB (1) | GB1565829A (en) |
NL (1) | NL7614450A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2414237A1 (en) * | 1976-03-31 | 1979-08-03 | Jacobs Eli S | OPTICAL INFORMATION READING DEVICE |
EP0023767A1 (en) * | 1979-07-16 | 1981-02-11 | Discovision Associates | Video player/recorder for recording on a blank disk and method for home recording |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130240A (en) * | 1981-02-05 | 1982-08-12 | Olympus Optical Co Ltd | Optical information recording and reproducing device and information recording medium for it |
US4424539A (en) * | 1981-12-23 | 1984-01-03 | International Business Machines Corporation | Magnetic disk-control track read through envelope |
GB2188474A (en) * | 1986-03-27 | 1987-09-30 | Philips Electronic Associated | Electronic digital storage apparatus |
GB8624444D0 (en) * | 1986-10-11 | 1986-11-12 | London Weekend Television Ltd | Optical disc |
JPH04305821A (en) * | 1991-04-02 | 1992-10-28 | Sony Corp | Disk reproducing device |
JP3063230B2 (en) * | 1991-05-31 | 2000-07-12 | ソニー株式会社 | Rewritable disk and disk device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1183948B (en) * | 1961-01-12 | 1964-12-23 | Telefunken Patent | Memories, especially micro memories for information |
DE1499773A1 (en) * | 1962-05-07 | 1970-08-20 | Minnesota Mining & Mfg | Device for recording image and sound information on a disk-shaped storage medium |
FR2217761A1 (en) * | 1973-02-09 | 1974-09-06 | Philips Nv | |
FR2251021A1 (en) * | 1973-11-09 | 1975-06-06 | Hitachi Ltd | Automatic focussing system for laser beam on to moving object - has out of focus detector of beam of surface producing signal in feedback to correct |
FR2315142A1 (en) * | 1975-06-17 | 1977-01-14 | Pyral Soc | Transducer head guide system - using additional guide track associated with magnetic recording track |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3479664A (en) * | 1965-12-28 | 1969-11-18 | Data Products Corp | Servo positioning system |
US3881184A (en) * | 1974-05-28 | 1975-04-29 | Ibm | Adaptive digital servo system |
-
1975
- 1975-12-26 JP JP50157200A patent/JPS5280007A/en active Pending
-
1976
- 1976-12-09 GB GB51505/76A patent/GB1565829A/en not_active Expired
- 1976-12-22 CA CA268,574A patent/CA1085050A/en not_active Expired
- 1976-12-23 DE DE19762658677 patent/DE2658677A1/en not_active Ceased
- 1976-12-24 FR FR7639100A patent/FR2336766A1/en active Granted
- 1976-12-27 NL NL7614450A patent/NL7614450A/en not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1183948B (en) * | 1961-01-12 | 1964-12-23 | Telefunken Patent | Memories, especially micro memories for information |
DE1499773A1 (en) * | 1962-05-07 | 1970-08-20 | Minnesota Mining & Mfg | Device for recording image and sound information on a disk-shaped storage medium |
FR2217761A1 (en) * | 1973-02-09 | 1974-09-06 | Philips Nv | |
FR2251021A1 (en) * | 1973-11-09 | 1975-06-06 | Hitachi Ltd | Automatic focussing system for laser beam on to moving object - has out of focus detector of beam of surface producing signal in feedback to correct |
FR2315142A1 (en) * | 1975-06-17 | 1977-01-14 | Pyral Soc | Transducer head guide system - using additional guide track associated with magnetic recording track |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2414237A1 (en) * | 1976-03-31 | 1979-08-03 | Jacobs Eli S | OPTICAL INFORMATION READING DEVICE |
EP0023767A1 (en) * | 1979-07-16 | 1981-02-11 | Discovision Associates | Video player/recorder for recording on a blank disk and method for home recording |
Also Published As
Publication number | Publication date |
---|---|
GB1565829A (en) | 1980-04-23 |
DE2658677A1 (en) | 1977-07-14 |
CA1085050A (en) | 1980-09-02 |
JPS5280007A (en) | 1977-07-05 |
NL7614450A (en) | 1977-06-28 |
FR2336766B1 (en) | 1984-09-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |