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GB963918A - Transverse-track magnetic tape recording apparatus - Google Patents

Transverse-track magnetic tape recording apparatus

Info

Publication number
GB963918A
GB963918A GB629862A GB629862A GB963918A GB 963918 A GB963918 A GB 963918A GB 629862 A GB629862 A GB 629862A GB 629862 A GB629862 A GB 629862A GB 963918 A GB963918 A GB 963918A
Authority
GB
United Kingdom
Prior art keywords
heads
magnetic tape
feb
transverse
recording apparatus
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
GB629862A
Inventor
John Lewis Edwin Baldwin
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.)
Rank Bush Murphy Ltd
Original Assignee
Rank Bush Murphy Ltd
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 Rank Bush Murphy Ltd filed Critical Rank Bush Murphy Ltd
Priority to GB629862A priority Critical patent/GB963918A/en
Priority to FR926851A priority patent/FR1349043A/en
Publication of GB963918A publication Critical patent/GB963918A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/14—Lining predominantly with metal
    • E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
    • E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
    • 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
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • G11B15/14—Masking or switching periodically, e.g. of rotating heads
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

963,918. Revoluble magnetic recording &c. heads; local circuits for. RANK-BUSH MURPHY Ltd. Feb. 18, 1963 [Feb. 19, 1962], No. 6298/62. Heading G5R. [Also in Division H3] The windings on an even number of heads 13-16, simultaneously energized so as successively to record transverse tracks, when rotated by means 4, 5 across a magnetic tape 1 are so phased with respect to a common terminal 17 that the current in the lead thereto, being the algebraic sum of all the head currents is substantially zero (as contrasted with the usual practice, Fig. 2 (not shown) where the algebraic sum is also the arithmetic sum and large enough to generate appreciable noise in the slip-ring connection thereto). The individual leads to the heads are each associated with hybrid amplifiers 8-11 (for details see Division H3) by which compensation for individual head sensitivities can be made. Conveniently, the same system is used on playback, by the use of a multiple changeover switch 7.
GB629862A 1962-02-19 1962-02-19 Transverse-track magnetic tape recording apparatus Expired GB963918A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB629862A GB963918A (en) 1962-02-19 1962-02-19 Transverse-track magnetic tape recording apparatus
FR926851A FR1349043A (en) 1962-02-19 1963-03-05 Cross-track magnetic tape recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB629862A GB963918A (en) 1962-02-19 1962-02-19 Transverse-track magnetic tape recording apparatus

Publications (1)

Publication Number Publication Date
GB963918A true GB963918A (en) 1964-07-15

Family

ID=9811956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB629862A Expired GB963918A (en) 1962-02-19 1962-02-19 Transverse-track magnetic tape recording apparatus

Country Status (1)

Country Link
GB (1) GB963918A (en)

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