GB787902A - Method and means of magnetic recording - Google Patents
Method and means of magnetic recordingInfo
- Publication number
- GB787902A GB787902A GB2574754A GB2574754A GB787902A GB 787902 A GB787902 A GB 787902A GB 2574754 A GB2574754 A GB 2574754A GB 2574754 A GB2574754 A GB 2574754A GB 787902 A GB787902 A GB 787902A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tape
- lead screw
- transducer
- pawl
- disc
- 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
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
-
- 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
- G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
- G11B15/1808—Driving of both record carrier and head
-
- 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
- G11B15/60—Guiding record carrier
- G11B15/602—Guiding record carrier for track selection, acquisition or following
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5504—Track change, selection or acquisition by displacement of the head across tape tracks
- G11B5/5508—Control circuits therefor
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
787,902. Magnetic recording and reproducing apparatus. STANDARD APPARATE FABRIK GES. Sept. 6, 1954, No. 25747/54. Class 40 (2). In a magnetic tape record apparatus the tracks on the tape are closely spaced, for example 2 per m/m., each trace consisting of a part parallel with the edge of the tape, and a second part connecting the next trace and arranged at a defined angle therewith, a drive roller being provided having guide rings for accurately locating the tape, and the transducer being provided with layers, foils or shaped pieces of diamagnetic or ferromagnetic materials. The embodiment described with reference to Fig. 2 shows an endless coil 10 of tape supported on a driving plate 11, and a driving roller 9 having conical guides 12 of a hard material such as agate, hard glass or chromium. The transducer 20 traverses the width of the tape by means of a lead screw 19 which is normally stationary until a notch 6 in the tape operates a switch which causes a pawl 16 to be withdrawn from engagement with a pin 17 on a disc 18 solid with lead screw 19 and driven by a friction clutch 21. A counter 23 geared to lead screw 19 indicates the particular track being recorded or reproduced, while a knob 24 enables a particular track to be selected, a disc 26 coupled thereto serving to disengage the pawl 16 from the pin 17. Means are described with reference to Fig. 3 (not shown) whereby the direction of rotation of the lead screw may be automatically reversed at the end of the traverse of the transducer 20.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2574754A GB787902A (en) | 1954-09-06 | 1954-09-06 | Method and means of magnetic recording |
GB146155A GB789085A (en) | 1954-09-06 | 1955-01-18 | Tape recording apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2574754A GB787902A (en) | 1954-09-06 | 1954-09-06 | Method and means of magnetic recording |
Publications (1)
Publication Number | Publication Date |
---|---|
GB787902A true GB787902A (en) | 1957-12-18 |
Family
ID=10232621
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2574754A Expired GB787902A (en) | 1954-09-06 | 1954-09-06 | Method and means of magnetic recording |
GB146155A Expired GB789085A (en) | 1954-09-06 | 1955-01-18 | Tape recording apparatus |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB146155A Expired GB789085A (en) | 1954-09-06 | 1955-01-18 | Tape recording apparatus |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB787902A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3643963A (en) * | 1968-04-30 | 1972-02-22 | Jahangir Madjidi Ahy | Signal recording and/or playback apparatus |
DE3112895C2 (en) * | 1981-03-31 | 1987-04-23 | Tandberg Data A/S, Oslo | Device for adjusting a magnetic head in a magnetic tape recorder |
-
1954
- 1954-09-06 GB GB2574754A patent/GB787902A/en not_active Expired
-
1955
- 1955-01-18 GB GB146155A patent/GB789085A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB789085A (en) | 1958-01-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3851116A (en) | Automatic magnetic tape information retrieval system with speed and position tape drive control | |
US2924668A (en) | Magnetic recording and reading apparatus | |
GB1173259A (en) | Automatically Reversible Cartridge Tape Recorder | |
US2914752A (en) | Information storage system | |
US3640479A (en) | Cassette tape device | |
GB978496A (en) | Magnetic recording and play-back apparatus | |
US2729453A (en) | Magnetic recording and reproducing apparatus | |
US3631427A (en) | Incremental tape drive controlled by prerecorded clock track | |
GB787902A (en) | Method and means of magnetic recording | |
US3308449A (en) | Multi-gap magnetic head | |
GB1476266A (en) | Information recording transport | |
US3443037A (en) | Multitrack tape recorder with mechanical track-change system | |
US3072753A (en) | Apparatus for duplicating magnetic recordings | |
GB1355151A (en) | Magnetic recording and reproducing apparatus | |
US3141625A (en) | Magnetic tape recorder | |
US3595584A (en) | Transducer apparatus | |
GB1402394A (en) | Magnetic tape drive apparatus | |
GB833278A (en) | Improvements in or relating to recording of reproducing apparatus | |
GB935752A (en) | Improvements in or relating to variable time delay apparatus | |
US2939921A (en) | Magnetic recording mechanism for selective skew recording | |
ES459313A1 (en) | Apparatus for reproducing and/or recording magnetic tape in cassettes | |
US2964594A (en) | Apparatus for magnetically recording high-frequency signals by means of a rotating transducer means | |
GB807435A (en) | Magnetic sound recording and reproducing apparatus | |
GB1333508A (en) | Recording and or play-back apparatus | |
US3596004A (en) | Video tape recorder with sound head having separate record and playback elements shiftable to maintain a fixed distance from the video head wheel |