GB932049A - Improvements in or relating to erasing heads for magnetic tape - Google Patents
Improvements in or relating to erasing heads for magnetic tapeInfo
- Publication number
- GB932049A GB932049A GB454660A GB454660A GB932049A GB 932049 A GB932049 A GB 932049A GB 454660 A GB454660 A GB 454660A GB 454660 A GB454660 A GB 454660A GB 932049 A GB932049 A GB 932049A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heads
- erase
- circuited
- feb
- relating
- 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
- 238000004804 winding Methods 0.000 abstract 2
- 238000006880 cross-coupling reaction Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/024—Erasing
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/17—Construction or disposition of windings
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
932,049. Erasing magnetic tapes. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 9, 1960 [Feb. 12, 1959], No. 4546/60. Class 40 (2). To prevent cross-coupling between adjacent erase heads 2, 3, 4, from influencing the erasure of individual tracks on a tape 1, alternate erase heads, all of the two consecutive gaptype, have the windings arranged on the centre or outer core-limbs respectively, Fig. 2. To avoid switching pulses appearing in other tracks when a head is to be energized, due to stray and self-capacities 15, 16, heads, e.g. 2 and 4, with like-orientated windings, heads out of use are short-circuited and are individually open-circuited by coupled switches, Fig. 3, before the erase current is applied.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL236067 | 1959-02-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB932049A true GB932049A (en) | 1963-07-24 |
Family
ID=19751569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB454660A Expired GB932049A (en) | 1959-02-12 | 1960-02-09 | Improvements in or relating to erasing heads for magnetic tape |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE587455A (en) |
CH (1) | CH389930A (en) |
DE (1) | DE1172057B (en) |
DK (1) | DK103746C (en) |
FR (1) | FR1247763A (en) |
GB (1) | GB932049A (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE949126C (en) * | 1948-01-08 | 1956-09-13 | Svenska A B Gasaccumulator | Magnetizing head |
US2689274A (en) * | 1953-04-30 | 1954-09-14 | Rca Corp | Recording on magnetic tape |
-
1960
- 1960-02-09 DK DK49860A patent/DK103746C/en active
- 1960-02-09 GB GB454660A patent/GB932049A/en not_active Expired
- 1960-02-09 DE DEN17862A patent/DE1172057B/en active Pending
- 1960-02-09 CH CH143560A patent/CH389930A/en unknown
- 1960-02-10 BE BE587455A patent/BE587455A/en unknown
- 1960-02-10 FR FR818117A patent/FR1247763A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE587455A (en) | 1960-06-10 |
FR1247763A (en) | 1960-12-02 |
DK103746C (en) | 1966-02-14 |
DE1172057B (en) | 1964-06-11 |
CH389930A (en) | 1965-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB932049A (en) | Improvements in or relating to erasing heads for magnetic tape | |
GB1189145A (en) | Tracking Mechanism for Magnetic Tape Players | |
GB943558A (en) | Magnetic recorder head assembly | |
JPS5275421A (en) | Compound multielement magnetic head | |
GB697208A (en) | Improvements in or relating to transducing heads for magnetic sound recording or reproducing apparatus | |
GB893805A (en) | Improvements in or relating to multiple magnetic heads | |
JPS5241504A (en) | Magnetic recorder/player | |
GB978228A (en) | Improvements in or relating to switching apparatus for magnetic transducers | |
CA705558A (en) | Magnetic tape recorder heads | |
CA603815A (en) | High efficiency magnetic recording and reproducing head | |
GB855021A (en) | Improvements in magnetic recording systems | |
FR1241491A (en) | Magnetic recording read head | |
FR1261777A (en) | Magnetic recording read head | |
JPS53114415A (en) | Magnetic head | |
CA604574A (en) | Magnetic recorder head assembly | |
CA599257A (en) | Magnetic erasing head | |
AU273032B2 (en) | Magnetic head arrangements of magnetic recording'and reproducing machines | |
JPS51114114A (en) | Erasing heads for tape recorders | |
CA499247A (en) | Multiple gap erase head for magnetic recording | |
CA634143A (en) | Magnetic reproducing head | |
CA605310A (en) | Magnetic head for recorder and reproducer | |
AU259179B2 (en) | Head assembly ina magnetic tape recorder | |
AU245775B2 (en) | Magnetic recording media | |
CA632885A (en) | Recording magnetic tape drive | |
AU4205364A (en) | Magnetic head arrangements of magnetic recording'and reproducing machines |