GB901620A - Improvements in or relating to magnetic recording and reproducing systems - Google Patents

Improvements in or relating to magnetic recording and reproducing systems

Info

Publication number
GB901620A
GB901620A GB3554660A GB3554660A GB901620A GB 901620 A GB901620 A GB 901620A GB 3554660 A GB3554660 A GB 3554660A GB 3554660 A GB3554660 A GB 3554660A GB 901620 A GB901620 A GB 901620A
Authority
GB
United Kingdom
Prior art keywords
tape
signal
frequency
oct
amplifier
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
GB3554660A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co 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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of GB901620A publication Critical patent/GB901620A/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
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/52—Controlling, regulating, or indicating speed by using signals recorded on, or derived from, record carrier
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1825—Driving of both record carrier and head driving or moving the head in a direction which cuts across the direction of travel of the tape, e.g. for helicoïdal scanning
    • G11B15/1833—Driving of both record carrier and head driving or moving the head in a direction which cuts across the direction of travel of the tape, e.g. for helicoïdal scanning with head driven in a plane, cyclically around an axis, e.g. on headwheel
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/43—Control or regulation of mechanical tension of record carrier, e.g. tape tension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/78—Television signal recording using magnetic recording
    • H04N5/782—Television signal recording using magnetic recording on tape

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

901,620. Automatic speed control systems. TOKYO SHIBAURA ELECTRIC CO. Ltd. Oct. 17, 1960 [Oct. 16, 1959], No. 35546/60. Class 38 (4). A rotatable head 13 for reproducing a video signal from magnetic tape 7 is connected to amplifier 19 which separates a synchronizing signal previously recorded on the tape. The synchronizing signal is then passed through amplifier 21 to a frequency discriminator 22 producing an output representing deviations of the frequency of the signal from a reference frequency. The error signal is amplified and then applied to the coil 18 of an eddy current brake which is coupled to the tape. This enables the head 13 to register correctly with bands recorded on the tape despite alterations in the length of the tape due to changing atmospheric conditions.
GB3554660A 1959-10-16 1960-10-17 Improvements in or relating to magnetic recording and reproducing systems Expired GB901620A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3258559 1959-10-16

Publications (1)

Publication Number Publication Date
GB901620A true GB901620A (en) 1962-07-18

Family

ID=12362928

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3554660A Expired GB901620A (en) 1959-10-16 1960-10-17 Improvements in or relating to magnetic recording and reproducing systems

Country Status (2)

Country Link
DE (1) DE1412536A1 (en)
GB (1) GB901620A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344054A1 (en) * 1988-05-26 1989-11-29 Schlumberger Industries Tape drive device for a magnetic recorder, and recorder provided with such a device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0344054A1 (en) * 1988-05-26 1989-11-29 Schlumberger Industries Tape drive device for a magnetic recorder, and recorder provided with such a device
FR2632109A1 (en) * 1988-05-26 1989-12-01 Schlumberger Ind Sa BAND DRIVE DEVICE FOR MAGNETIC RECORDER AND RECORDER PROVIDED WITH SUCH A DEVICE
US5038234A (en) * 1988-05-26 1991-08-06 Schlumberger Industries Tape drive device for a magnetic recorder

Also Published As

Publication number Publication date
DE1412536A1 (en) 1968-10-17

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