NL163040C - Magnetisch schijvengeheugen. - Google Patents

Magnetisch schijvengeheugen.

Info

Publication number
NL163040C
NL163040C NL7108923.A NL7108923A NL163040C NL 163040 C NL163040 C NL 163040C NL 7108923 A NL7108923 A NL 7108923A NL 163040 C NL163040 C NL 163040C
Authority
NL
Netherlands
Prior art keywords
magnetic disc
disc memory
memory
magnetic
disc
Prior art date
Application number
NL7108923.A
Other languages
English (en)
Other versions
NL7108923A (nl
NL163040B (nl
Original Assignee
Information Storage Systems
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 Information Storage Systems filed Critical Information Storage Systems
Publication of NL7108923A publication Critical patent/NL7108923A/xx
Publication of NL163040B publication Critical patent/NL163040B/nl
Application granted granted Critical
Publication of NL163040C publication Critical patent/NL163040C/nl

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Control Of Linear Motors (AREA)
  • Rotational Drive Of Disk (AREA)
  • Measurement Of Current Or Voltage (AREA)
NL7108923.A 1970-06-29 1971-06-28 Magnetisch schijvengeheugen. NL163040C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5063170A 1970-06-29 1970-06-29

Publications (3)

Publication Number Publication Date
NL7108923A NL7108923A (nl) 1971-12-31
NL163040B NL163040B (nl) 1980-02-15
NL163040C true NL163040C (nl) 1980-07-15

Family

ID=21966403

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7108923.A NL163040C (nl) 1970-06-29 1971-06-28 Magnetisch schijvengeheugen.

Country Status (6)

Country Link
US (1) US3629679A (nl)
JP (1) JPS51262B1 (nl)
CA (1) CA935544A (nl)
FR (1) FR2100028A5 (nl)
GB (1) GB1359511A (nl)
NL (1) NL163040C (nl)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49117008A (nl) * 1973-03-09 1974-11-08
JPS5916330B2 (ja) * 1974-02-08 1984-04-14 日本ビクター株式会社 回転記録媒体を用いる記録再生装置におけるヘツド待避装置
JPS575738Y2 (nl) * 1979-07-19 1982-02-03
JPS55105448U (nl) * 1980-02-15 1980-07-23
JPS586560A (ja) * 1981-06-30 1983-01-14 Fujitsu Ltd 磁気デイスク装置
JPS5845670A (ja) * 1981-09-07 1983-03-16 Matsushita Electric Ind Co Ltd 磁気デイスク装置
US4371903A (en) * 1981-09-28 1983-02-01 Dma Systems Corporation Emergency head retract system for magnetic disc drives
FR2528213B1 (fr) * 1982-06-03 1987-12-18 Tandon Corp Dispositif de memoire a disque magnetique
JPS59192160U (ja) * 1983-06-07 1984-12-20 沖電気工業株式会社 感光ドラム帯電装置
JPS60136976A (ja) * 1983-12-26 1985-07-20 Toshiba Corp 磁気ヘツド制御装置
JPS6276077A (ja) * 1985-09-30 1987-04-08 Toshiba Corp 磁気デイスク装置
US4679102A (en) * 1985-11-20 1987-07-07 Seagate Technology Method and means for parking read/write heads in a disc drive using the back-EMF of the spindle motor to operate a stepper motor
FR2593318B1 (fr) * 1986-01-21 1991-02-08 Raymond Engineering Organe de memoire a disque magnetique
GB2229852B (en) * 1986-01-21 1991-01-23 Raymond Engineering Magnetic disc memory unit
US4658308A (en) * 1986-03-05 1987-04-14 Miniscribe Corporation Method and apparatus for retracting head and braking motor of a disc drive device
US4786995A (en) * 1986-11-06 1988-11-22 Peripheral Technology, Inc Automatic head retract system for disk drive
US4870703A (en) * 1986-12-15 1989-09-26 Raymond Engineering Inc. Magnetic disc memory unit
US4967188A (en) * 1989-07-26 1990-10-30 Ncr Corporation Method for detecting low battery voltage in portable scanning systems
US5422808A (en) * 1993-04-20 1995-06-06 Anthony T. Catanese, Jr. Method and apparatus for fail-safe control of at least one electro-mechanical or electro-hydraulic component
US5769912A (en) * 1995-10-16 1998-06-23 Mansur Industries Inc. System and method of vapor recovery in industrial washing equipment
US6639749B1 (en) 1999-01-21 2003-10-28 Seagate Technology Llc Supplying power from a spindle motor in a disc drive system
US6859340B2 (en) 2001-03-09 2005-02-22 Seagate Technology Llc Method and device for retracting an actuator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405337A (en) * 1965-04-13 1968-10-08 Sperry Rand Corp Fail operational control system for redundant servos with torque signal equalization
US3483455A (en) * 1967-03-30 1969-12-09 Sperry Rand Corp Malfunction detection circuit

Also Published As

Publication number Publication date
NL7108923A (nl) 1971-12-31
GB1359511A (en) 1974-07-10
US3629679A (en) 1971-12-21
DE2124188A1 (nl) 1972-01-05
NL163040B (nl) 1980-02-15
CA935544A (en) 1973-10-16
FR2100028A5 (nl) 1972-03-17
JPS471917A (nl) 1972-01-31
JPS51262B1 (nl) 1976-01-06
DE2124188B2 (de) 1975-11-20

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
V1 Lapsed because of non-payment of the annual fee