CA1147456A - Automatically compensated movable head servo circuit and method - Google Patents

Automatically compensated movable head servo circuit and method

Info

Publication number
CA1147456A
CA1147456A CA000320228A CA320228A CA1147456A CA 1147456 A CA1147456 A CA 1147456A CA 000320228 A CA000320228 A CA 000320228A CA 320228 A CA320228 A CA 320228A CA 1147456 A CA1147456 A CA 1147456A
Authority
CA
Canada
Prior art keywords
head
signal
track
tape
line
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
CA000320228A
Other languages
English (en)
French (fr)
Inventor
Raymond F. Ravizza
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.)
Ampex Corp
Original Assignee
Ampex Corp
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 Ampex Corp filed Critical Ampex Corp
Application granted granted Critical
Publication of CA1147456A publication Critical patent/CA1147456A/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
    • G11B15/1808—Driving of both record carrier and head
    • 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
    • G11B5/58—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • G11B5/588—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 provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Control Of Position Or Direction (AREA)
CA000320228A 1978-03-23 1979-01-24 Automatically compensated movable head servo circuit and method Expired CA1147456A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88999478A 1978-03-23 1978-03-23
US889,994 1986-07-28

Publications (1)

Publication Number Publication Date
CA1147456A true CA1147456A (en) 1983-05-31

Family

ID=25396083

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000320228A Expired CA1147456A (en) 1978-03-23 1979-01-24 Automatically compensated movable head servo circuit and method

Country Status (10)

Country Link
JP (1) JPS54163618A (it)
AT (1) AT381823B (it)
BE (1) BE875025A (it)
CA (1) CA1147456A (it)
DE (1) DE2911122A1 (it)
FR (1) FR2420816B1 (it)
GB (1) GB2017352B (it)
HK (1) HK6887A (it)
IT (1) IT1115051B (it)
NL (1) NL181311C (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127925A (en) * 1980-03-13 1981-10-07 Sony Corp Tracking device of magnetic head
JPS57140083A (en) * 1981-02-24 1982-08-30 Sony Corp Video signal reproducing device
US4481544A (en) * 1981-09-18 1984-11-06 Ampex Corporation Automatic tracking system with apparatus to prevent mistracking by a limited range transducer during stop motion
JPS58169360A (ja) * 1982-03-30 1983-10-05 Sony Corp ビデオ信号再生装置
EP0091190B2 (en) * 1982-04-02 1993-03-03 Ampex Corporation A programmable nonlinear speed control for a recording and/or reproducing apparatus
JPS6087422A (ja) * 1983-09-19 1985-05-17 アムペックス　コーポレーション 自動ヘツド位置トラツキングサ−ボ方式

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2260163B1 (it) * 1974-02-04 1979-08-03 Thomson Brandt
DE2423074C2 (de) * 1974-05-13 1983-09-22 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur Spurführung eines Lichtstrahlabtastkopfes
US4080636A (en) * 1976-03-19 1978-03-21 Ampex Corporation System for damping vibrations in a deflectable transducer
US4093885A (en) * 1976-03-19 1978-06-06 Ampex Corporation Transducer assembly vibration sensor
GB1579854A (en) * 1976-03-19 1980-11-26 Ampex Method and apparatus for producing time base altered effects in data recording and reproducing apparatus
US4106065A (en) * 1976-03-19 1978-08-08 Ampex Corporation Drive circuitry for controlling movable video head
US4151570A (en) * 1976-03-22 1979-04-24 Ampex Corporation Automatic scan tracking using a magnetic head supported by a piezoelectric bender element
US4099211A (en) * 1976-09-13 1978-07-04 Ampex Corporation Positionable transducing mounting structure and driving system therefor
GB1580008A (en) * 1977-06-04 1980-11-26 Sony Corp Automatic head tracking system
JPS5492307A (en) * 1977-12-29 1979-07-21 Sony Corp Driving circuit of electrostrictive converter
JPS54113308A (en) * 1978-02-23 1979-09-04 Sony Corp Tracking device for magnetic head

Also Published As

Publication number Publication date
FR2420816B1 (fr) 1988-07-29
FR2420816A1 (fr) 1979-10-19
DE2911122C2 (it) 1987-07-02
DE2911122A1 (de) 1979-09-27
GB2017352B (en) 1982-08-25
NL181311C (nl) 1987-07-16
IT7948427A0 (it) 1979-03-21
AT381823B (de) 1986-12-10
ATA217279A (de) 1986-04-15
HK6887A (en) 1987-01-23
NL7902274A (nl) 1979-09-25
NL181311B (nl) 1987-02-16
IT1115051B (it) 1986-02-03
JPS54163618A (en) 1979-12-26
BE875025A (fr) 1979-07-16
GB2017352A (en) 1979-10-03

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Legal Events

Date Code Title Description
MKEX Expiry