FR2392464A1 - Appareil et procede de reproduction de sons a partir de signaux sonores enregistres optiquement - Google Patents
Appareil et procede de reproduction de sons a partir de signaux sonores enregistres optiquementInfo
- Publication number
- FR2392464A1 FR2392464A1 FR7815125A FR7815125A FR2392464A1 FR 2392464 A1 FR2392464 A1 FR 2392464A1 FR 7815125 A FR7815125 A FR 7815125A FR 7815125 A FR7815125 A FR 7815125A FR 2392464 A1 FR2392464 A1 FR 2392464A1
- Authority
- FR
- France
- Prior art keywords
- sound
- optically recorded
- sound signals
- recorded sound
- reproducing sounds
- 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.)
- Withdrawn
Links
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
- G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
- G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
- G11B7/0032—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent for moving-picture soundtracks, i.e. cinema
-
- 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
- G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
Abstract
Appareil de reproduction de sons à partir de signaux sonores enregistrés optiquement de manière que l'information sonore se présente sous la forme de variations de la position d'une limite sur l'enregistrement optique. L'appareil comporte une rangée 21 d'éléments photo-électriques, parcourus, à une certaine fréquence de balayage, par un faisceau lumineux dont la position varie en fonction des variations correspondantes et successives de la position de la limite entre une zone claire et une zone sombre sur une piste sonore 22. Domaine d'application : enregistrement optique des sons.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/799,573 US4124784A (en) | 1977-05-23 | 1977-05-23 | Motion picture sound system |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2392464A1 true FR2392464A1 (fr) | 1978-12-22 |
Family
ID=25176235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7815125A Withdrawn FR2392464A1 (fr) | 1977-05-23 | 1978-05-22 | Appareil et procede de reproduction de sons a partir de signaux sonores enregistres optiquement |
Country Status (9)
Country | Link |
---|---|
US (1) | US4124784A (fr) |
JP (1) | JPS5417702A (fr) |
AU (1) | AU519169B2 (fr) |
CA (1) | CA1114062A (fr) |
DE (1) | DE2822278A1 (fr) |
FR (1) | FR2392464A1 (fr) |
GB (1) | GB1596957A (fr) |
IT (1) | IT1103295B (fr) |
NL (1) | NL7805524A (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0119101A2 (fr) * | 1983-03-14 | 1984-09-19 | Dolby Laboratories Licensing Corporation | Pistes sonores optiques stéreophoniques de film cinéma et appareil d'enregistrement et de reproduction des pistes sonores optiques |
WO1993005507A1 (fr) * | 1991-09-05 | 1993-03-18 | Dolby Laboratories Licensing Corporation | Recuperation de signaux basse-frequence a partir d'enregistrement optique a surface variable |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4355383A (en) * | 1977-06-03 | 1982-10-19 | Dolby Laboratories Licensing Corporation | Apparatus for scanning variable area optical sound tracks by parallel processing discrete photosensor outputs |
US4577302A (en) * | 1983-03-14 | 1986-03-18 | Dolby Laboratories Licensing Corporation | Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise |
US4596008A (en) * | 1983-08-25 | 1986-06-17 | Beard Terry D | Optical sound track playback apparatus and method |
US5194996A (en) * | 1990-04-16 | 1993-03-16 | Optical Radiation Corporation | Digital audio recording format for motion picture film |
US5231627A (en) * | 1991-09-10 | 1993-07-27 | National Film Board Of Canada | Apparatus for reading optically encoded soundtracks |
JPH06332084A (ja) * | 1993-05-25 | 1994-12-02 | Sony Corp | 映画フィルム用ディジタル情報再生装置 |
US5526075A (en) * | 1993-09-13 | 1996-06-11 | Digital Technology Systems Of California, Inc. | Apparatus for reading analog sound tracks on film with circuit for averaging sound track boundaries to reduce the effect of noise |
US5621490A (en) * | 1996-08-26 | 1997-04-15 | The Todd-Ao Corporation | Sound system for compact distribution print |
US6037993A (en) * | 1997-03-17 | 2000-03-14 | Antec Corporation | Digital BTSC compander system |
US6259482B1 (en) | 1998-03-11 | 2001-07-10 | Matthew F. Easley | Digital BTSC compander system |
US6351302B1 (en) * | 2000-05-11 | 2002-02-26 | Carlsen, Ii George D. | Analog sound track digitizer |
EP1317848A2 (fr) * | 2000-09-11 | 2003-06-11 | BTS Holding International B.V. | Procede et dispositif de reproduction d'enregistrements de son optique |
FR2954528B1 (fr) | 2009-12-17 | 2012-02-24 | Univ La Rochelle | Procede et dispositif de restitution d'un signal sonore et/ou d'une piste sonore |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2140799A (en) * | 1935-03-28 | 1938-12-20 | Andrew A Kucher | Multiple light sensitive tube |
FR885556A (fr) * | 1941-08-30 | 1943-09-20 | Philips Nv | Procédé pour l'exploration électro-optique d'enregistrements d'oscillations |
US2347084A (en) * | 1942-09-15 | 1944-04-18 | Rca Corp | Noiseless sound system |
US2462263A (en) * | 1945-02-02 | 1949-02-22 | Rca Corp | Reproduction of sound |
FR943078A (fr) * | 1946-03-14 | 1949-02-25 | Philips Nv | Procédé et dispositif d'exploration simultanée de plusieurs enregistrements d'oscillations |
US2487511A (en) * | 1947-05-21 | 1949-11-08 | Rca Corp | Contour indicating device |
US3138669A (en) * | 1961-06-06 | 1964-06-23 | Rabinow Jacob | Record player using light transducer and servo |
US3769468A (en) * | 1971-07-30 | 1973-10-30 | Westinghouse Electric Corp | Audio reproduction methods and apparatus |
FR2188231A1 (fr) * | 1972-05-01 | 1974-01-18 | Ampex | |
FR2260833A1 (en) * | 1974-02-13 | 1975-09-05 | Proc Opto Electro Exploit | Optical reader for linear recording - projects image onto scanning photodiode array to form segments |
DE2536285A1 (de) * | 1974-08-27 | 1976-04-15 | Dolby Laboratories Inc | Schaltung zur wiedergabe von tonspuren |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3964826A (en) * | 1973-11-30 | 1976-06-22 | Sundstrand Data Control, Inc. | Dual sound system |
US4044207A (en) * | 1975-11-12 | 1977-08-23 | The Association Of Motion Picture And Television Producers, Inc. | Apparatus for reproducing a multiple track photographic sound record |
-
1977
- 1977-05-23 US US05/799,573 patent/US4124784A/en not_active Expired - Lifetime
-
1978
- 1978-05-17 GB GB20287/78A patent/GB1596957A/en not_active Expired
- 1978-05-19 CA CA303,734A patent/CA1114062A/fr not_active Expired
- 1978-05-22 JP JP6089078A patent/JPS5417702A/ja active Pending
- 1978-05-22 FR FR7815125A patent/FR2392464A1/fr not_active Withdrawn
- 1978-05-22 NL NL7805524A patent/NL7805524A/xx not_active Application Discontinuation
- 1978-05-22 AU AU36314/78A patent/AU519169B2/en not_active Expired
- 1978-05-22 IT IT49482/78A patent/IT1103295B/it active
- 1978-05-22 DE DE19782822278 patent/DE2822278A1/de not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2140799A (en) * | 1935-03-28 | 1938-12-20 | Andrew A Kucher | Multiple light sensitive tube |
FR885556A (fr) * | 1941-08-30 | 1943-09-20 | Philips Nv | Procédé pour l'exploration électro-optique d'enregistrements d'oscillations |
US2347084A (en) * | 1942-09-15 | 1944-04-18 | Rca Corp | Noiseless sound system |
US2462263A (en) * | 1945-02-02 | 1949-02-22 | Rca Corp | Reproduction of sound |
FR943078A (fr) * | 1946-03-14 | 1949-02-25 | Philips Nv | Procédé et dispositif d'exploration simultanée de plusieurs enregistrements d'oscillations |
US2487511A (en) * | 1947-05-21 | 1949-11-08 | Rca Corp | Contour indicating device |
US3138669A (en) * | 1961-06-06 | 1964-06-23 | Rabinow Jacob | Record player using light transducer and servo |
US3769468A (en) * | 1971-07-30 | 1973-10-30 | Westinghouse Electric Corp | Audio reproduction methods and apparatus |
FR2188231A1 (fr) * | 1972-05-01 | 1974-01-18 | Ampex | |
FR2260833A1 (en) * | 1974-02-13 | 1975-09-05 | Proc Opto Electro Exploit | Optical reader for linear recording - projects image onto scanning photodiode array to form segments |
DE2536285A1 (de) * | 1974-08-27 | 1976-04-15 | Dolby Laboratories Inc | Schaltung zur wiedergabe von tonspuren |
CA1052907A (fr) * | 1974-08-27 | 1979-04-17 | Dolby Laboratories Inc. | Lecture de pistes audio optiques |
Non-Patent Citations (1)
Title |
---|
EXBK/78 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0119101A2 (fr) * | 1983-03-14 | 1984-09-19 | Dolby Laboratories Licensing Corporation | Pistes sonores optiques stéreophoniques de film cinéma et appareil d'enregistrement et de reproduction des pistes sonores optiques |
EP0119101A3 (en) * | 1983-03-14 | 1986-08-27 | Dolby Laboratories Licensing Corporation | Improvements in stereophonic motion picture photographic sound-tracks and apparatus for recording and playing back photographic sound tracks |
WO1993005507A1 (fr) * | 1991-09-05 | 1993-03-18 | Dolby Laboratories Licensing Corporation | Recuperation de signaux basse-frequence a partir d'enregistrement optique a surface variable |
Also Published As
Publication number | Publication date |
---|---|
DE2822278A1 (de) | 1978-12-21 |
AU519169B2 (en) | 1981-11-12 |
AU3631478A (en) | 1979-11-29 |
GB1596957A (en) | 1981-09-03 |
JPS5417702A (en) | 1979-02-09 |
IT1103295B (it) | 1985-10-14 |
US4124784A (en) | 1978-11-07 |
NL7805524A (nl) | 1978-11-27 |
IT7849482A0 (it) | 1978-05-22 |
CA1114062A (fr) | 1981-12-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |