GB921658A - Improved reproducing head - Google Patents
Improved reproducing headInfo
- Publication number
- GB921658A GB921658A GB1927562A GB1927562A GB921658A GB 921658 A GB921658 A GB 921658A GB 1927562 A GB1927562 A GB 1927562A GB 1927562 A GB1927562 A GB 1927562A GB 921658 A GB921658 A GB 921658A
- Authority
- GB
- United Kingdom
- Prior art keywords
- record member
- remanent magnetism
- reproducing head
- accordance
- forming
- 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
- G11B11/10—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 magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/115—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 magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam,e.g. of electrons or X-rays other than a beam of light for reproducing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/125—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Magnetic Record Carriers (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
921,658. Digital-data storage apparatus. AMPEX CORPORATION. June 22, 1960 [July 20, 1959], No. 19275/62. Divided out of 909,217. Class 106 (1). A magnetic reproducing head for a foraminated record member as in Specification 909,217, comprises means for deflecting a cathode beam in accordance with remanent magnetism in the record member, and means for collecting said beam and forming an output signal in accordance with said remanent magnetism. The head includes an evacuated envelope 32 containing core members 37, 38 forming a gap 34 through which the electron beam 41 passes on its way to an electrode 47. The record member 11 is passed, externally of the envelope 32, between the core member 38 and an external core member 39. Remanent magnetism in the record member 11 causes deflection of the cathode beam 41 to produce a signal on collector electrodes 44, 46. Two further embodiments are described with reference to Figs. 4 and 6 (not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82830359A | 1959-07-20 | 1959-07-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB921658A true GB921658A (en) | 1963-03-20 |
Family
ID=25251409
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1927462A Expired GB951361A (en) | 1959-07-20 | 1960-06-22 | Improved recording head |
GB1927562A Expired GB921658A (en) | 1959-07-20 | 1960-06-22 | Improved reproducing head |
GB2190760A Expired GB909217A (en) | 1959-07-20 | 1960-06-22 | Improved magnetic recording and reproducing apparatus and record member therefor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1927462A Expired GB951361A (en) | 1959-07-20 | 1960-06-22 | Improved recording head |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2190760A Expired GB909217A (en) | 1959-07-20 | 1960-06-22 | Improved magnetic recording and reproducing apparatus and record member therefor |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1207444B (en) |
GB (3) | GB951361A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247483A (en) * | 1963-03-26 | 1966-04-19 | Ibm | Character recognition system employing a plurality of spaced serial transducers |
US3651311A (en) * | 1969-11-26 | 1972-03-21 | Digitronics Corp | Information signal generation apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5044081Y1 (en) * | 1974-10-17 | 1975-12-16 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE663728C (en) * | 1933-09-20 | 1938-08-12 | Veronika Oexmann Geb Daltrop | Record-shaped magnetogram carrier |
US2782043A (en) * | 1950-08-22 | 1957-02-19 | Rca Corp | Magnetic tape |
-
1960
- 1960-06-22 GB GB1927462A patent/GB951361A/en not_active Expired
- 1960-06-22 GB GB1927562A patent/GB921658A/en not_active Expired
- 1960-06-22 GB GB2190760A patent/GB909217A/en not_active Expired
- 1960-07-11 DE DEA35095A patent/DE1207444B/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247483A (en) * | 1963-03-26 | 1966-04-19 | Ibm | Character recognition system employing a plurality of spaced serial transducers |
US3651311A (en) * | 1969-11-26 | 1972-03-21 | Digitronics Corp | Information signal generation apparatus |
Also Published As
Publication number | Publication date |
---|---|
DE1207444B (en) | 1965-12-23 |
GB909217A (en) | 1962-10-31 |
GB951361A (en) | 1964-03-04 |
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