NO750439L - - Google Patents
Info
- Publication number
- NO750439L NO750439L NO750439A NO750439A NO750439L NO 750439 L NO750439 L NO 750439L NO 750439 A NO750439 A NO 750439A NO 750439 A NO750439 A NO 750439A NO 750439 L NO750439 L NO 750439L
- Authority
- NO
- Norway
- Prior art keywords
- recording medium
- reading
- areas
- tracks
- signal
- Prior art date
Links
- 230000005855 radiation Effects 0.000 claims description 23
- 230000000737 periodic effect Effects 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims 1
- 230000001131 transforming effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 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
- G11B7/007—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
-
- 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
- G11B7/0908—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 focusing 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
- G11B7/0908—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 focusing only
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
-
- 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
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
- G11B7/24073—Tracks
- G11B7/24082—Meandering
Landscapes
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7402012A NL7402012A (nl) | 1974-02-14 | 1974-02-14 | Registratiedrager waarop informatie is aange- bracht in een optisch uitleesbare struktuur. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO750439L true NO750439L (pl) | 1975-08-15 |
Family
ID=19820749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO750439A NO750439L (pl) | 1974-02-14 | 1975-02-11 |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US3999008A (pl) |
| JP (1) | JPS50125621A (pl) |
| AR (1) | AR206009A1 (pl) |
| AT (1) | AT340489B (pl) |
| AU (1) | AU500000B2 (pl) |
| BE (1) | BE825463A (pl) |
| BR (1) | BR7500795A (pl) |
| CA (1) | CA1047642A (pl) |
| CH (2) | CH595673A5 (pl) |
| DE (1) | DE2503935C2 (pl) |
| DK (1) | DK137875B (pl) |
| ES (2) | ES434652A1 (pl) |
| FR (1) | FR2261671B1 (pl) |
| GB (1) | GB1508881A (pl) |
| IT (1) | IT1031646B (pl) |
| NL (1) | NL7402012A (pl) |
| NO (1) | NO750439L (pl) |
| PL (1) | PL109359B1 (pl) |
| SE (1) | SE7501472L (pl) |
| ZA (1) | ZA75132B (pl) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7600479A (nl) * | 1976-01-19 | 1977-07-21 | Philips Nv | Automatisch optisch focusseersysteem. |
| NL7608561A (nl) * | 1976-08-02 | 1978-02-06 | Philips Nv | Optische uitleeseenheid voor het aftasten van een registratiedrager voorzien van een stra- lingsreflekterende informatiestruktuur. |
| NL187413C (nl) * | 1978-03-16 | 1991-09-16 | Philips Nv | Registratiedragerlichaam, ingeschreven registratiedrager, werkwijze voor het inschrijven van het registratiedragerlichaam en inrichting voor het uitvoeren van de werkwijze en voor het uitlezen van een ingeschreven registratiedrager. |
| US4189746A (en) * | 1978-03-23 | 1980-02-19 | Rca Corporation | Method and apparatus for determining focus conditions |
| NL8000121A (nl) * | 1980-01-09 | 1981-08-03 | Philips Nv | Schijfvormige, optische uitleesbare registratiedrager als opslagmedium voor datainformatie, inrichting voor het vervaardigen van zo'n registratiedrager, inrichting voor het optekenen van datainformatie in zo'n registratiedrager en inrichting voor het uitlezen van zo'n registratiedrager. |
| JPS57186237A (en) * | 1981-05-12 | 1982-11-16 | Pioneer Video Corp | Crosstalk eliminating device for recorded information reproducing device |
| US4402061A (en) * | 1981-10-15 | 1983-08-30 | Burroughs Corporation | Preformatted optical media for use in an optical memory system |
| EP0169882A1 (en) * | 1984-01-30 | 1986-02-05 | Illuminated Data, Inc. | Optical data storage and readout apparatus |
| JPS60234232A (ja) * | 1984-05-07 | 1985-11-20 | Matsushita Electric Ind Co Ltd | 光デイスクおよびそのトラツキング方法 |
| JP2641421B2 (ja) * | 1985-03-22 | 1997-08-13 | 株式会社日立製作所 | 光学的検出方法、光学的情報再生装置、及び信号検出回路 |
| US5268564A (en) | 1990-08-03 | 1993-12-07 | Symbol Technologies, Inc. | Bar code scanner actuated by detection of scanner motion |
| US5289407A (en) * | 1991-07-22 | 1994-02-22 | Cornell Research Foundation, Inc. | Method for three dimensional optical data storage and retrieval |
| US5251198A (en) * | 1992-05-29 | 1993-10-05 | Strickler James H | Reading device for multi-layered optical information carrier |
| US5502576A (en) * | 1992-08-24 | 1996-03-26 | Ramsay International Corporation | Method and apparatus for the transmission, storage, and retrieval of documents in an electronic domain |
| CN1041546C (zh) * | 1994-05-16 | 1999-01-06 | 霍夫曼·霍夫曼·森德根·保利公司 | 斜盘机 |
| US5995481A (en) * | 1995-09-12 | 1999-11-30 | Wea Manufacturing Inc. | Light-readable recording disc utilizing half-wavelength pits or bumps and system for reading such discs |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126535A (en) * | 1961-12-27 | 1964-03-24 | Transducer positioning system | |
| US3371154A (en) * | 1963-12-26 | 1968-02-27 | Minnesota Mining & Mfg | Audio-video disk recording system with crosstalk prevention |
| US3673412A (en) * | 1970-03-02 | 1972-06-27 | Trw Inc | Radiant energy beam scanning method and apparatus |
| US3663764A (en) * | 1970-04-06 | 1972-05-16 | Ampex | Automatic tracking circuit for transverse scan magnetic tape transport |
| NL172202C (nl) * | 1971-03-11 | 1983-07-18 | Philips Nv | Inrichting voor het uitlezen van een plaatvormige informatiedrager bevattende in optische vorm gecodeerde beeld- en/of geluidssignalen. |
| DE2133130B2 (de) * | 1971-07-03 | 1973-12-06 | Ted Bildplatten Ag Aeg-Telefunkenteldec, Zug (Schweiz) | System zur gleichzeitigen Wie dergabe zweier unabhängiger Signal verlaufe |
| US3829605A (en) * | 1971-07-20 | 1974-08-13 | Ted Bildplatten | Carrier and method for recording a signal thereon |
| US3848095A (en) * | 1972-12-20 | 1974-11-12 | I O Metrics Corp | Three dimensional electro-optical retrieval system |
| US3931460A (en) * | 1974-02-04 | 1976-01-06 | Zenith Radio Corporation | Video disc with multiturn undulating storage track |
-
1974
- 1974-02-14 NL NL7402012A patent/NL7402012A/xx not_active Application Discontinuation
- 1974-04-29 US US05/464,841 patent/US3999008A/en not_active Expired - Lifetime
-
1975
- 1975-01-01 AR AR257555A patent/AR206009A1/es active
- 1975-01-07 ZA ZA00750132A patent/ZA75132B/xx unknown
- 1975-01-31 DE DE2503935A patent/DE2503935C2/de not_active Expired
- 1975-02-06 CA CA219,520A patent/CA1047642A/en not_active Expired
- 1975-02-07 BR BR795/75A patent/BR7500795A/pt unknown
- 1975-02-10 JP JP50016354A patent/JPS50125621A/ja active Pending
- 1975-02-11 CH CH162375A patent/CH595673A5/xx not_active IP Right Cessation
- 1975-02-11 NO NO750439A patent/NO750439L/no unknown
- 1975-02-11 AT AT101175A patent/AT340489B/de not_active IP Right Cessation
- 1975-02-11 DK DK49175AA patent/DK137875B/da unknown
- 1975-02-11 SE SE7501472A patent/SE7501472L/xx unknown
- 1975-02-11 CH CH113277A patent/CH600477A5/xx not_active IP Right Cessation
- 1975-02-11 PL PL1975177949A patent/PL109359B1/pl unknown
- 1975-02-11 GB GB5743/75A patent/GB1508881A/en not_active Expired
- 1975-02-11 IT IT20158/75A patent/IT1031646B/it active
- 1975-02-12 ES ES434652A patent/ES434652A1/es not_active Expired
- 1975-02-12 BE BE153302A patent/BE825463A/xx unknown
- 1975-02-14 AU AU78213/75A patent/AU500000B2/en not_active Expired
- 1975-02-14 FR FR7504676A patent/FR2261671B1/fr not_active Expired
-
1976
- 1976-11-13 ES ES453313A patent/ES453313A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7402012A (nl) | 1975-08-18 |
| DE2503935A1 (de) | 1975-08-28 |
| CA1047642A (en) | 1979-01-30 |
| JPS50125621A (pl) | 1975-10-02 |
| IT1031646B (it) | 1979-05-10 |
| BE825463A (fr) | 1975-08-12 |
| AR206009A1 (es) | 1976-06-23 |
| DE2503935C2 (de) | 1983-02-17 |
| GB1508881A (en) | 1978-04-26 |
| FR2261671B1 (pl) | 1978-02-03 |
| CH600477A5 (pl) | 1978-06-15 |
| ES434652A1 (es) | 1977-05-01 |
| DK137875B (da) | 1978-05-22 |
| FR2261671A1 (pl) | 1975-09-12 |
| AU7821375A (en) | 1976-08-19 |
| PL109359B1 (en) | 1980-05-31 |
| ZA75132B (en) | 1976-08-25 |
| AU500000B2 (en) | 1979-05-10 |
| ATA101175A (de) | 1977-04-15 |
| BR7500795A (pt) | 1975-11-25 |
| AT340489B (de) | 1977-12-12 |
| DK137875C (pl) | 1978-10-23 |
| US3999008A (en) | 1976-12-21 |
| SE7501472L (pl) | 1975-08-15 |
| CH595673A5 (pl) | 1978-02-15 |
| DK49175A (pl) | 1975-10-06 |
| ES453313A1 (es) | 1977-11-16 |
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