BE447615A - - Google Patents
Info
- Publication number
- BE447615A BE447615A BE447615DA BE447615A BE 447615 A BE447615 A BE 447615A BE 447615D A BE447615D A BE 447615DA BE 447615 A BE447615 A BE 447615A
- Authority
- BE
- Belgium
Links
Classifications
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/38—Arrangements for displaying electric variables or waveforms using the steady or oscillatory displacement of a light beam by an electromechanical measuring system
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- 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
- G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL885556X | 1941-08-30 | ||
| NL2485829X | 1941-08-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE447615A true BE447615A (xx) |
Family
ID=26646467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE447615D BE447615A (xx) | 1941-08-30 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2485829A (xx) |
| BE (1) | BE447615A (xx) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2605162A (en) * | 1949-07-27 | 1952-07-29 | John F Gantt | Film opaquing device and process |
| US2681382A (en) * | 1950-08-11 | 1954-06-15 | Earl D Hilburn | Video recording and reproducing |
| US3187114A (en) * | 1958-08-14 | 1965-06-01 | Raymond R Mcdaniel | Recording and reproduction of intelligence signals |
| US3975598A (en) * | 1973-05-17 | 1976-08-17 | Westinghouse Electric Corporation | Random-access spoken word electron beam digitally addressable memory |
| GB1525691A (en) * | 1974-08-27 | 1978-09-20 | Dolby Laboratories Inc | Reproduction of optical sound tracks |
| US4184055A (en) * | 1977-03-18 | 1980-01-15 | Dolby Laboratories, Inc. | Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means |
| US4223188A (en) * | 1977-03-18 | 1980-09-16 | Dolby Laboratories, Inc. | Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means |
| US4596008A (en) * | 1983-08-25 | 1986-06-17 | Beard Terry D | Optical sound track playback apparatus and method |
| US5237559A (en) * | 1991-09-05 | 1993-08-17 | Dolby Laboratories Licensing Corporation | Reproduction of sound track signals by varying the detector threshold level as a function of the transverse scan position |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2251332A (en) * | 1938-03-31 | 1941-08-05 | Bell Telephone Labor Inc | Cathode ray device |
| US2347084A (en) * | 1942-09-15 | 1944-04-18 | Rca Corp | Noiseless sound system |
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0
- BE BE447615D patent/BE447615A/xx unknown
-
1946
- 1946-05-03 US US666875A patent/US2485829A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2485829A (en) | 1949-10-25 |