FR2382742A1 - Support pour enregistrer des signaux video et audio et dispositif pour realiser des enregistrements sur ce support - Google Patents
Support pour enregistrer des signaux video et audio et dispositif pour realiser des enregistrements sur ce supportInfo
- Publication number
- FR2382742A1 FR2382742A1 FR7803571A FR7803571A FR2382742A1 FR 2382742 A1 FR2382742 A1 FR 2382742A1 FR 7803571 A FR7803571 A FR 7803571A FR 7803571 A FR7803571 A FR 7803571A FR 2382742 A1 FR2382742 A1 FR 2382742A1
- Authority
- FR
- France
- Prior art keywords
- media
- signal
- audio signals
- recording video
- signals
- 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
- 230000005236 sound signal Effects 0.000 abstract 2
- 238000005259 measurement Methods 0.000 abstract 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
- G11B7/24—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
- G11B7/24085—Pits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/03—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by deforming with non-mechanical means, e.g. laser, beam of particles
- G11B11/05—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by deforming with non-mechanical means, e.g. laser, beam of particles with reproducing by capacitive means
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
-
- 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
- G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
-
- 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
- G11B23/30—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 with provision for auxiliary signals
- G11B23/36—Signals on record carriers or on containers and recorded by the same method as the main recording
-
- 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
- G11B7/0045—Recording
-
- 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
- G11B7/0938—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 servo format, e.g. guide tracks, pilot signals
-
- 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
Abstract
Support d'enregistrement de signaux vidéo et audio. Ce support présente une surface plane dans laquelle sont réalisés des creux (premier signal), sous l'action de faisceaux modulés en intensite, ces creux formant des voies adjacentes d'une première piste. Une seconde série de creux (deuxième signal) est réalisée d'une façon analogue au voisinage des précédents pour enregistrer des signaux pilotes de commande de pistage. Le niveau L1 du premier signal doit excéder celui du deuxième signal d'une mesure donnée (par exemple 10 dB). L'invention permet d'améliorer la qualité des images et sons reproduits, par exemple de signaux vidéo et audio pour télévision, dans la mesure où elle permet d'éliminer la distorsion par interférence due aux caractéristiques non linéaires d'entrée-sortie et à la modulation croisée desdits signaux.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1332277A JPS5398814A (en) | 1977-02-09 | 1977-02-09 | Grooveless medium disc for information recording |
JP1443877A JPS5399923A (en) | 1977-02-12 | 1977-02-12 | Grooveless medium disc for imformation recording |
JP1487077A JPS53100217A (en) | 1977-02-14 | 1977-02-14 | Grooveless medium disc for information recording |
JP1805777A JPS53103716A (en) | 1977-02-23 | 1977-02-23 | Grooveless disc for information recording medium |
JP1805677A JPS53103715A (en) | 1977-02-23 | 1977-02-23 | Grooveless disc for information recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2382742A1 true FR2382742A1 (fr) | 1978-09-29 |
FR2382742B1 FR2382742B1 (fr) | 1985-11-29 |
Family
ID=27519494
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7803571A Expired FR2382742B1 (fr) | 1977-02-09 | 1978-02-08 | Support pour enregistrer des signaux video et audio et dispositif pour realiser des enregistrements sur ce support |
Country Status (6)
Country | Link |
---|---|
US (1) | US4420827A (fr) |
CA (1) | CA1106061A (fr) |
DE (1) | DE2805322C2 (fr) |
FR (1) | FR2382742B1 (fr) |
GB (1) | GB1600432A (fr) |
NL (1) | NL173797C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2384317A1 (fr) * | 1977-02-09 | 1978-10-13 | Victor Company Of Japan | Dispositif d'enregistrement, notamment de signaux d'information, sur des supports tournants |
FR2396378A1 (fr) * | 1977-06-28 | 1979-01-26 | Ibm | Disque d'enregistrement video et dispositif de reproduction en portant application |
FR2504301A1 (fr) * | 1981-04-15 | 1982-10-22 | Thomson Csf | Support d'informations mobile et dispositif d'enregistrement-lecture comprenant un tel support |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57167172A (en) * | 1981-04-07 | 1982-10-14 | Victor Co Of Japan Ltd | High density information recording and reproducing system |
JPS58215735A (ja) * | 1982-06-07 | 1983-12-15 | Sony Corp | 光学式デイスク記録方法 |
JPS59161555U (ja) * | 1983-04-14 | 1984-10-29 | 日本ビクター株式会社 | トラツキングサ−ボ回路 |
CA1258909A (fr) * | 1985-03-29 | 1989-08-29 | Hideki Hosoya | Support d'enregistrement optique et methode d'enregistrement et de lecture d'informations sur ce support |
US4949331A (en) * | 1985-06-19 | 1990-08-14 | Hitachi, Ltd. | Apparatus and record carrier for optical disc memory with correction pattern and master disc cutting apparatus |
CA1259133A (fr) * | 1985-06-28 | 1989-09-05 | Hirohisa Yamaguchi | Support d'enregistrement tournant a piste de guidage et appareil d'enregistrement et de lecture utilisant ce support |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4001493A (en) * | 1974-09-03 | 1977-01-04 | Nihon Denshi Kabushiki Kaisha | Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article |
US4006292A (en) * | 1974-09-03 | 1977-02-01 | Sharp Corporation | Information recording and reproducing system with plural information tracks within a single groove |
FR2384317A1 (fr) * | 1977-02-09 | 1978-10-13 | Victor Company Of Japan | Dispositif d'enregistrement, notamment de signaux d'information, sur des supports tournants |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3438050A (en) * | 1965-01-06 | 1969-04-08 | Itek Corp | Laser data recorder |
US3673412A (en) * | 1970-03-02 | 1972-06-27 | Trw Inc | Radiant energy beam scanning method and apparatus |
US3701846A (en) * | 1970-03-27 | 1972-10-31 | George E Zenzefilis | Method and apparatus for recording and reproducing video |
US3800099A (en) * | 1971-03-31 | 1974-03-26 | Ted Bildplatten | Storing and reproducing information and carrier therefor with zones of different deformation characteristics |
US3787887A (en) * | 1971-04-29 | 1974-01-22 | Rca Corp | Optical recorder with intensity control |
NL7212045A (fr) * | 1972-09-05 | 1974-03-07 | ||
JPS4964405A (fr) * | 1972-10-20 | 1974-06-21 | ||
US3968326A (en) * | 1973-02-09 | 1976-07-06 | Rca Corporation | Trapezoidal smooth grooves for video disc |
US4084185A (en) * | 1974-02-12 | 1978-04-11 | U.S. Philips Corporation | Record carrier on which information is stored in an optically readable structure |
US3919697A (en) * | 1974-06-26 | 1975-11-11 | Battelle Development Corp | Data record tracking using track identifying information in the gaps between recorded data groups |
FR2304981A1 (fr) * | 1975-03-21 | 1976-10-15 | Thomson Brandt | Dispositif d'enregistrement optique d'informations |
DE2522405C2 (de) * | 1975-05-21 | 1982-04-15 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Optisches Mehrkanal-Plattenspeichersystem zum Speichern von digitaler Information |
US4321621A (en) * | 1976-04-08 | 1982-03-23 | Victor Company Of Japan, Ltd. | High density recording system using side-by-side information and servo tracks |
NL179765C (nl) * | 1976-11-17 | 1986-11-03 | Victor Company Of Japan | Naald voor het weergeven van informatiesignalen, die op een registratiemedium zijn geregistreerd. |
US4161752A (en) * | 1977-06-28 | 1979-07-17 | International Business Machines Corporation | High density video disk having two pit depths |
-
1978
- 1978-02-08 NL NLAANVRAGE7801440,A patent/NL173797C/xx not_active IP Right Cessation
- 1978-02-08 CA CA296,450A patent/CA1106061A/fr not_active Expired
- 1978-02-08 FR FR7803571A patent/FR2382742B1/fr not_active Expired
- 1978-02-08 GB GB5035/78A patent/GB1600432A/en not_active Expired
- 1978-02-09 DE DE2805322A patent/DE2805322C2/de not_active Expired
-
1980
- 1980-09-11 US US06/186,297 patent/US4420827A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4001493A (en) * | 1974-09-03 | 1977-01-04 | Nihon Denshi Kabushiki Kaisha | Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article |
US4006292A (en) * | 1974-09-03 | 1977-02-01 | Sharp Corporation | Information recording and reproducing system with plural information tracks within a single groove |
FR2384317A1 (fr) * | 1977-02-09 | 1978-10-13 | Victor Company Of Japan | Dispositif d'enregistrement, notamment de signaux d'information, sur des supports tournants |
FR2384316A1 (fr) * | 1977-02-09 | 1978-10-13 | Victor Company Of Japan | Support d'enregistrement de signaux video et audio et dispositif pour realiser des enregistrements sur ce support |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2384317A1 (fr) * | 1977-02-09 | 1978-10-13 | Victor Company Of Japan | Dispositif d'enregistrement, notamment de signaux d'information, sur des supports tournants |
FR2396378A1 (fr) * | 1977-06-28 | 1979-01-26 | Ibm | Disque d'enregistrement video et dispositif de reproduction en portant application |
FR2504301A1 (fr) * | 1981-04-15 | 1982-10-22 | Thomson Csf | Support d'informations mobile et dispositif d'enregistrement-lecture comprenant un tel support |
Also Published As
Publication number | Publication date |
---|---|
NL173797B (nl) | 1983-10-03 |
NL173797C (nl) | 1984-03-01 |
CA1106061A (fr) | 1981-07-28 |
DE2805322C2 (de) | 1982-12-23 |
US4420827A (en) | 1983-12-13 |
DE2805322A1 (de) | 1978-08-10 |
FR2382742B1 (fr) | 1985-11-29 |
NL7801440A (nl) | 1978-08-11 |
GB1600432A (en) | 1981-10-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |