FR686132A - Improvements to sound recorders and reproducers and to media for recording and reproducing such sounds - Google Patents
Improvements to sound recorders and reproducers and to media for recording and reproducing such soundsInfo
- Publication number
- FR686132A FR686132A FR686132DA FR686132A FR 686132 A FR686132 A FR 686132A FR 686132D A FR686132D A FR 686132DA FR 686132 A FR686132 A FR 686132A
- Authority
- FR
- France
- Prior art keywords
- reproducers
- sounds
- reproducing
- recording
- media
- 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
Classifications
-
- 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
- G11B11/12—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 optical means
- G11B11/14—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 optical means with reproducing by magnetic means
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR686132T | 1929-12-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR686132A true FR686132A (en) | 1930-07-22 |
Family
ID=9025375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR686132D Expired FR686132A (en) | 1929-12-05 | 1929-12-05 | Improvements to sound recorders and reproducers and to media for recording and reproducing such sounds |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR686132A (en) |
-
1929
- 1929-12-05 FR FR686132D patent/FR686132A/en not_active Expired
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