GB2004091A - Control system for spool drive of magnetic tape apparatus - Google Patents

Control system for spool drive of magnetic tape apparatus

Info

Publication number
GB2004091A
GB2004091A GB7831609A GB7831609A GB2004091A GB 2004091 A GB2004091 A GB 2004091A GB 7831609 A GB7831609 A GB 7831609A GB 7831609 A GB7831609 A GB 7831609A GB 2004091 A GB2004091 A GB 2004091A
Authority
GB
United Kingdom
Prior art keywords
tape
control system
magnetic tape
tape apparatus
spool drive
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.)
Granted
Application number
GB7831609A
Other versions
GB2004091B (en
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.)
Assmann GmbH
Original Assignee
Assmann 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 Assmann GmbH filed Critical Assmann GmbH
Publication of GB2004091A publication Critical patent/GB2004091A/en
Application granted granted Critical
Publication of GB2004091B publication Critical patent/GB2004091B/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
    • G11B15/54—Controlling, regulating, or indicating speed by stroboscope; by tachometer

Landscapes

  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

In capstanless tape apparatus, a pulse generator driven by the tape feeds a comparator which generates a pulse-width modulated output according to any tape speed error and applied at 1 to a switchable amplifier T1 whose output is converted by a low-pass filter Dr, Cl into a direct voltage representing the error. A direct voltage amplifier T2, T3 acts as a controllable current source to determine the magnitude of the current supplied to the D.C. drive motor M for the tape spool, independent of the instantaneous rotor position, so as to regulate the tape speed. <IMAGE>
GB7831609A 1977-07-28 1978-07-28 Control system for spool drive of magnetic tape apparatus Expired GB2004091B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772734011 DE2734011A1 (en) 1977-07-28 1977-07-28 ARRANGEMENT FOR REGULATING THE REEL DRIVE FOR MAGNETIC TAPE DEVICES

Publications (2)

Publication Number Publication Date
GB2004091A true GB2004091A (en) 1979-03-21
GB2004091B GB2004091B (en) 1982-01-20

Family

ID=6015013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7831609A Expired GB2004091B (en) 1977-07-28 1978-07-28 Control system for spool drive of magnetic tape apparatus

Country Status (3)

Country Link
JP (1) JPS5452510A (en)
DE (1) DE2734011A1 (en)
GB (1) GB2004091B (en)

Also Published As

Publication number Publication date
JPS5452510A (en) 1979-04-25
GB2004091B (en) 1982-01-20
DE2734011A1 (en) 1979-02-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee