GB1472933A - Optical disc read-out system - Google Patents
Optical disc read-out systemInfo
- Publication number
- GB1472933A GB1472933A GB3280474A GB3280474A GB1472933A GB 1472933 A GB1472933 A GB 1472933A GB 3280474 A GB3280474 A GB 3280474A GB 3280474 A GB3280474 A GB 3280474A GB 1472933 A GB1472933 A GB 1472933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- focusing
- tracking
- lens
- photo
- 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
Links
- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000011248 coating agent Substances 0.000 abstract 2
- 238000000576 coating method Methods 0.000 abstract 2
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 abstract 1
- 239000000057 synthetic resin Substances 0.000 abstract 1
Classifications
-
- 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
- G11B23/0057—Intermediate mediums, i.e. mediums provided with an information structure not specific to the method of reproducing or duplication such as matrixes for mechanical pressing of an information structure ; record carriers having a relief information structure provided with or included in layers not specific for a single reproducing method; apparatus or processes specially adapted for their manufacture
-
- 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
-
- 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
-
- 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
-
- 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
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/7605—Television signal recording on discs or drums
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8665773A JPS5429082B2 (nl) | 1973-07-31 | 1973-07-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1472933A true GB1472933A (en) | 1977-05-11 |
Family
ID=13893094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3280474A Expired GB1472933A (en) | 1973-07-31 | 1974-07-25 | Optical disc read-out system |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5429082B2 (nl) |
DE (1) | DE2436395C3 (nl) |
FR (1) | FR2239722B1 (nl) |
GB (1) | GB1472933A (nl) |
IT (1) | IT1018743B (nl) |
NL (1) | NL7409624A (nl) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS598892B2 (ja) * | 1975-06-19 | 1984-02-28 | ソニー株式会社 | 信号の光学的記録再生装置 |
US4097895A (en) * | 1976-03-19 | 1978-06-27 | Rca Corporation | Multilayer optical record |
DE2615605C2 (de) * | 1976-04-09 | 1978-06-01 | Polygram Gmbh, 2000 Hamburg | Scheibenförmiger Informationsträger und Verfahren zu seiner Herstellung |
NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
JPS5312227A (en) * | 1976-07-20 | 1978-02-03 | Matsushita Electric Ind Co Ltd | Signal processing system |
NL7703123A (nl) * | 1977-03-23 | 1978-09-26 | Philips Nv | Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager. |
JPS57198733U (nl) * | 1981-06-15 | 1982-12-17 | ||
JPS5848033U (ja) * | 1981-09-22 | 1983-03-31 | 萬世工業株式会社 | レンズ駆動装置 |
FR2525376B1 (fr) * | 1982-04-19 | 1988-02-26 | Lewiner Jacques | Perfectionnements aux dispositifs de lecture des quantites de charges electriques portees par une feuille dielectrique |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3381086A (en) * | 1962-08-16 | 1968-04-30 | Minnesota Mining & Mfg | Reproduction of television signals from photographic disc recordings |
NL299459A (nl) * | 1962-10-19 | |||
DE1277344B (de) * | 1964-07-06 | 1968-09-12 | Siemens Ag | Verfahren zur Informationsspeicherung und Gedaechtnisspeicher zur Durchfuehrung des Verfahrens |
US3496540A (en) * | 1965-04-30 | 1970-02-17 | Singer General Precision | Registration means for character recognition apparatus |
US3452163A (en) * | 1965-12-08 | 1969-06-24 | Phillip B Dahlen | Optical phonograph apparatus with polarized light |
DE1574687B2 (de) * | 1968-02-06 | 1978-08-10 | Robert Bosch Gmbh, 7000 Stuttgart | Aufzeichnungsträger für Informationen |
US3530258A (en) * | 1968-06-28 | 1970-09-22 | Mca Technology Inc | Video signal transducer having servo controlled flexible fiber optic track centering |
JPS5120888A (en) * | 1974-08-12 | 1976-02-19 | Babcock Hitachi Kk | Gokuteionyo ae sensa |
-
1973
- 1973-07-31 JP JP8665773A patent/JPS5429082B2/ja not_active Expired
-
1974
- 1974-07-16 NL NL7409624A patent/NL7409624A/nl not_active Application Discontinuation
- 1974-07-25 GB GB3280474A patent/GB1472933A/en not_active Expired
- 1974-07-29 IT IT52320/74A patent/IT1018743B/it active
- 1974-07-29 DE DE2436395A patent/DE2436395C3/de not_active Expired
- 1974-07-30 FR FR7426495A patent/FR2239722B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2239722B1 (nl) | 1977-07-01 |
JPS5052924A (nl) | 1975-05-10 |
IT1018743B (it) | 1977-10-20 |
DE2436395B2 (de) | 1976-07-01 |
JPS5429082B2 (nl) | 1979-09-20 |
DE2436395A1 (de) | 1975-02-27 |
NL7409624A (nl) | 1975-02-04 |
FR2239722A1 (nl) | 1975-02-28 |
DE2436395C3 (de) | 1984-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |