GB914247A - Improvements in or relating to magnetic transducing apparatus - Google Patents
Improvements in or relating to magnetic transducing apparatusInfo
- Publication number
- GB914247A GB914247A GB232860A GB232860A GB914247A GB 914247 A GB914247 A GB 914247A GB 232860 A GB232860 A GB 232860A GB 232860 A GB232860 A GB 232860A GB 914247 A GB914247 A GB 914247A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jan
- photo
- control means
- relating
- record
- 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
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/04—Preventing, inhibiting, or warning against accidental erasing or double recording
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
914,247. Preventing accidental recording. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 18, 1961 [Jan. 22, 1960], No. 2328/60. Drawings to Specification. Class 40 (2). A magnetic record, or a magnetic tape spool may carry a detachable member, whose presence or absence is photo-electrically sensed to control means permitting or inhibiting recording. A logical circuit (the Fig. not shown), includes a bi-stable circuit arranged to prevent the initial instruction given by the control means from being countermanded if there is a subsequent variation in the photo-electric output while the record is running.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB232860A GB914247A (en) | 1960-01-22 | 1960-01-22 | Improvements in or relating to magnetic transducing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB232860A GB914247A (en) | 1960-01-22 | 1960-01-22 | Improvements in or relating to magnetic transducing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB914247A true GB914247A (en) | 1962-12-28 |
Family
ID=9737607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB232860A Expired GB914247A (en) | 1960-01-22 | 1960-01-22 | Improvements in or relating to magnetic transducing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB914247A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4445199A (en) * | 1980-07-15 | 1984-04-24 | Fujitsu Fanuc Limited | Portable bubble memory apparatus |
US4459679A (en) * | 1979-10-04 | 1984-07-10 | Fujitsu Limited | Magnetic bubble memory device cassette |
-
1960
- 1960-01-22 GB GB232860A patent/GB914247A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4459679A (en) * | 1979-10-04 | 1984-07-10 | Fujitsu Limited | Magnetic bubble memory device cassette |
US4445199A (en) * | 1980-07-15 | 1984-04-24 | Fujitsu Fanuc Limited | Portable bubble memory apparatus |
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