GB1306848A - System for producing an electrical output signal in correspondence with a magnetic flux generating source - Google Patents
System for producing an electrical output signal in correspondence with a magnetic flux generating sourceInfo
- Publication number
- GB1306848A GB1306848A GB1609770A GB1609770A GB1306848A GB 1306848 A GB1306848 A GB 1306848A GB 1609770 A GB1609770 A GB 1609770A GB 1609770 A GB1609770 A GB 1609770A GB 1306848 A GB1306848 A GB 1306848A
- Authority
- GB
- United Kingdom
- Prior art keywords
- head
- produced
- flux
- coils
- magnetic
- 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
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/12—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
- G05B19/16—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using magnetic record carriers
-
- 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
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
Abstract
1306848 Magnetic transducing systems SONY CORP 3 April 1970 [9 April 1969] 16097/70 Heading G5R A magnetic record having a track in which successive portions vary in lateral position and/or transverse magnetization direction is sensed by a flux-responsive head having at least two gaps 11, 12 parallel to the relative transducing direction and defined by opposed cores 5, 6 and a central core 2 carrying two coils 3, 4 spaced along the magnetic flux path produced in the core 2 during use. The core 2 is saturable and has two limbs 17, 18. The coils 3, 4 receive a 100 kHz supply to set up a bias field ha, hb which is unbalanced when influenced by a flux H produced by a record track transversely magnetized or laterally offset relative to the gaps. The fluxes H and ha, hb combine to vary the relative inductances of the coils 3, 4, possibly by saturation of one limb 18, and produce a differential output at terminals 28a, 28b. The record track may be produced by a movable head to produce e.g. a sinewave (Figs. 7, 8, not shown); by a twin-gap head producing oppositely directed magnetic fields (Fig. 9, not shown); or by a rubber magnet embedded in a helical or V-shaped groove in a drum (Figs. 14-17, not shown). A programmed series of signals may be produced by respective flux-responsive heads (1a ... 1n, Fig. 11, not shown) co-operating with tracks recorded by a manually indexable head (56) on a drum capable of manual rotation, the head (56) and drum having indexing scales (59, 63).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2788469A JPS4824587B1 (en) | 1969-04-09 | 1969-04-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1306848A true GB1306848A (en) | 1973-02-14 |
Family
ID=12233306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1609770A Expired GB1306848A (en) | 1969-04-09 | 1970-04-03 | System for producing an electrical output signal in correspondence with a magnetic flux generating source |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS4824587B1 (en) |
CH (1) | CH542494A (en) |
DE (1) | DE2017035A1 (en) |
GB (1) | GB1306848A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4564877A (en) * | 1982-04-28 | 1986-01-14 | Tdk Corporation | Magnetic recording/reproducing system with wide-gapped transducer and method for using same |
US4763215A (en) * | 1982-10-22 | 1988-08-09 | Cii-Honeywell Bull (Societe Anonyme) | Device for writing high density data on a magnetic medium |
-
1969
- 1969-04-09 JP JP2788469A patent/JPS4824587B1/ja active Pending
-
1970
- 1970-04-03 GB GB1609770A patent/GB1306848A/en not_active Expired
- 1970-04-09 DE DE19702017035 patent/DE2017035A1/en not_active Withdrawn
- 1970-04-09 CH CH524570A patent/CH542494A/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4564877A (en) * | 1982-04-28 | 1986-01-14 | Tdk Corporation | Magnetic recording/reproducing system with wide-gapped transducer and method for using same |
US4763215A (en) * | 1982-10-22 | 1988-08-09 | Cii-Honeywell Bull (Societe Anonyme) | Device for writing high density data on a magnetic medium |
Also Published As
Publication number | Publication date |
---|---|
DE2017035A1 (en) | 1970-10-15 |
CH542494A (en) | 1973-09-30 |
JPS4824587B1 (en) | 1973-07-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |