GB1017223A - Rotating magnetic-head arrangement for playing back wide-band signals, particularly television signals - Google Patents

Rotating magnetic-head arrangement for playing back wide-band signals, particularly television signals

Info

Publication number
GB1017223A
GB1017223A GB2145863A GB2145863A GB1017223A GB 1017223 A GB1017223 A GB 1017223A GB 2145863 A GB2145863 A GB 2145863A GB 2145863 A GB2145863 A GB 2145863A GB 1017223 A GB1017223 A GB 1017223A
Authority
GB
United Kingdom
Prior art keywords
winding
head
playing back
signals
sept
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
Application number
GB2145863A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1017223A publication Critical patent/GB1017223A/en
Expired legal-status Critical Current

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
    • G11B5/52—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 simultaneous movement of head and record carrier, e.g. rotation of head
    • G11B5/53—Disposition or mounting of heads on rotating support
    • 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
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • 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
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/245—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features comprising means for controlling the reluctance of the magnetic circuit in a head with single gap, for co-operation with one track

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

1,017,223. Magnetic playback heads; television. TELEFUNKEN PATENTVERWERTUNGSGESELLSCHAFT m.b.H. Sept. 7, 1962 [Sept. 12, 1961], No. 21458/63. Divided out of 1,013,349. Heading G5R. For playing back directly recorded picture signals (i.e. without frequency-modulation) from a helical-wrap type magnetic tape (particularly in the arrangement described in Specification 1,013,349) a head with a first, laminated magnetic circuit of generally D-shape with a gap 37 is cladded with further laminations 35 associated with a high-inductance, lowfrequency winding 32 and with a pair of ferrite members 33, associated with a winding 34 resonating at some 2 Mc/s. To achieve adequate low-frequency response, the magnetic circuit 31, 35, is so arranged in the head-carrier (not shown) that the helicallywrapped tape engages the circuit for substantially half a turn; the region under the winding 32 may also be equipped with a window and supplementary winding of known type to make the head partially flux-sensitive. In a further embodiment (Fig. 4, not shown) the ferrites extend proud of the laminations and incorporate the playback gap and the tapewrapping surface.
GB2145863A 1961-09-12 1962-09-07 Rotating magnetic-head arrangement for playing back wide-band signals, particularly television signals Expired GB1017223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET20747A DE1143225B (en) 1961-09-12 1961-09-12 Rotating magnetic head arrangement for scanning broadband signals, in particular television signals

Publications (1)

Publication Number Publication Date
GB1017223A true GB1017223A (en) 1966-01-19

Family

ID=7549834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2145863A Expired GB1017223A (en) 1961-09-12 1962-09-07 Rotating magnetic-head arrangement for playing back wide-band signals, particularly television signals

Country Status (2)

Country Link
DE (1) DE1143225B (en)
GB (1) GB1017223A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086015A1 (en) * 1982-02-12 1983-08-17 Koninklijke Philips Electronics N.V. Magnetic head having a step-shaped gap
EP0110365A2 (en) * 1982-11-29 1984-06-13 Olympus Optical Co., Ltd. Video tape recorder
EP0110364A1 (en) * 1982-11-29 1984-06-13 Litton Systems, Inc. Microwave oven with common wrap and cavity walls

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072649B (en) * 1960-01-07 Loewe Opta Aktiengesellschaft Berlin-Steglitz Method for recording or reproducing television pulses using magnetic tapes by means of recording or reproducing members moved transversely to the tape travel direction
US2955169A (en) * 1953-11-02 1960-10-04 Grundig Max Magnetic reproducing and recording head
DE1094797B (en) * 1958-07-08 1960-12-15 Telefunken Gmbh Arrangement for recording and reproducing a frequency band that goes down to frequency zero

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086015A1 (en) * 1982-02-12 1983-08-17 Koninklijke Philips Electronics N.V. Magnetic head having a step-shaped gap
EP0110365A2 (en) * 1982-11-29 1984-06-13 Olympus Optical Co., Ltd. Video tape recorder
EP0110364A1 (en) * 1982-11-29 1984-06-13 Litton Systems, Inc. Microwave oven with common wrap and cavity walls
EP0110365A3 (en) * 1982-11-29 1985-06-19 Olympus Optical Co., Ltd. Video tape recorder
US4642711A (en) * 1982-11-29 1987-02-10 Olympus Optical Co., Ltd. Video tape recorder including vertical recording heads

Also Published As

Publication number Publication date
DE1143225B (en) 1963-02-07

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