ES454014A1 - Un metodo perfeccionado de establecer un espacio de divisioncircunferencialmente uniforme, adecuado para acceso de transductores de memoria en un archivo de disco de memoria masiva. - Google Patents

Un metodo perfeccionado de establecer un espacio de divisioncircunferencialmente uniforme, adecuado para acceso de transductores de memoria en un archivo de disco de memoria masiva.

Info

Publication number
ES454014A1
ES454014A1 ES454014A ES454014A ES454014A1 ES 454014 A1 ES454014 A1 ES 454014A1 ES 454014 A ES454014 A ES 454014A ES 454014 A ES454014 A ES 454014A ES 454014 A1 ES454014 A1 ES 454014A1
Authority
ES
Spain
Prior art keywords
signal
signals
low
counter
selected cylinder
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
ES454014A
Other languages
English (en)
Spanish (es)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of ES454014A1 publication Critical patent/ES454014A1/es
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/021—Selecting or spacing of record carriers for introducing the heads

Landscapes

  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Automatic Disk Changers (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Measuring Fluid Pressure (AREA)
ES454014A 1975-12-08 1976-12-07 Un metodo perfeccionado de establecer un espacio de divisioncircunferencialmente uniforme, adecuado para acceso de transductores de memoria en un archivo de disco de memoria masiva. Expired ES454014A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/638,792 US4051541A (en) 1975-12-08 1975-12-08 Access to floppy disk stack

Publications (1)

Publication Number Publication Date
ES454014A1 true ES454014A1 (es) 1977-11-16

Family

ID=24561453

Family Applications (1)

Application Number Title Priority Date Filing Date
ES454014A Expired ES454014A1 (es) 1975-12-08 1976-12-07 Un metodo perfeccionado de establecer un espacio de divisioncircunferencialmente uniforme, adecuado para acceso de transductores de memoria en un archivo de disco de memoria masiva.

Country Status (14)

Country Link
US (1) US4051541A (OSRAM)
JP (1) JPS5270817A (OSRAM)
AU (1) AU505465B2 (OSRAM)
BE (1) BE848054A (OSRAM)
BR (1) BR7608248A (OSRAM)
CA (1) CA1074441A (OSRAM)
CH (1) CH607226A5 (OSRAM)
DE (1) DE2655010B2 (OSRAM)
ES (1) ES454014A1 (OSRAM)
FR (1) FR2335016A1 (OSRAM)
GB (1) GB1503067A (OSRAM)
IT (1) IT1070428B (OSRAM)
NL (1) NL7613537A (OSRAM)
SE (1) SE408498B (OSRAM)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4167029A (en) * 1976-08-04 1979-09-04 Burroughs Corporation Jet distributor for end-wise pneumatic partitioning of disk pack
US4092681A (en) * 1976-12-20 1978-05-30 International Business Machines Corporation Flexible disk file access mechanism
US4143408A (en) * 1977-11-28 1979-03-06 International Business Machines Corp. External selector and internal controller for flexible disc stack
US4164768A (en) * 1978-09-01 1979-08-14 International Business Machines Corporation Dual stage flow controller for self-ventilating disk pack
US4229774A (en) * 1979-01-02 1980-10-21 International Business Machines Corporation Self-adapting flow restrictors
US7212377B1 (en) * 2004-03-31 2007-05-01 Western Digital Technologies, Inc. Disk drive having apertures near the ID of a disk stack for allowing airflow to pass through the apertures to reduce disk flutter
US7224551B1 (en) * 2004-05-15 2007-05-29 Western Digital Technologies, Inc. Disk drive having apertures aligned near the inner diameter of a disk stack for allowing airflow to pass through the apertures to reduce disk flutter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3130393A (en) * 1959-05-13 1964-04-21 Sperry Rand Corp Information storage device
NL122740C (OSRAM) * 1960-10-03
NL6812450A (OSRAM) * 1968-08-31 1970-03-03
US3835998A (en) * 1973-07-02 1974-09-17 Ibm Edge locating apparatus
US3936878A (en) * 1973-12-26 1976-02-03 International Business Machines Corporation Disc interface location
US3936880A (en) * 1974-07-01 1976-02-03 International Business Machines Corporation Bistable deflection separation of flexible disks

Also Published As

Publication number Publication date
FR2335016A1 (fr) 1977-07-08
AU505465B2 (en) 1979-11-22
DE2655010C3 (OSRAM) 1979-03-15
SE7613730L (sv) 1977-06-09
SE408498B (sv) 1979-06-11
US4051541A (en) 1977-09-27
CA1074441A (en) 1980-03-25
BR7608248A (pt) 1977-11-29
IT1070428B (it) 1985-03-29
JPS5642066B2 (OSRAM) 1981-10-02
DE2655010B2 (de) 1978-06-29
NL7613537A (nl) 1977-06-10
BE848054A (fr) 1977-03-01
DE2655010A1 (de) 1977-07-14
CH607226A5 (OSRAM) 1978-11-30
GB1503067A (en) 1978-03-08
JPS5270817A (en) 1977-06-13
AU2038476A (en) 1978-06-15
FR2335016B1 (OSRAM) 1978-05-12

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