CA1143832A - Group coded recording data recovery system - Google Patents

Group coded recording data recovery system

Info

Publication number
CA1143832A
CA1143832A CA000339097A CA339097A CA1143832A CA 1143832 A CA1143832 A CA 1143832A CA 000339097 A CA000339097 A CA 000339097A CA 339097 A CA339097 A CA 339097A CA 1143832 A CA1143832 A CA 1143832A
Authority
CA
Canada
Prior art keywords
signal
data
output
edge
rdy
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
CA000339097A
Other languages
English (en)
French (fr)
Inventor
Nicholas S. Lemak
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.)
Bull HN Information Systems Inc
Original Assignee
Honeywell Information Systems Inc
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 Honeywell Information Systems Inc filed Critical Honeywell Information Systems Inc
Application granted granted Critical
Publication of CA1143832A publication Critical patent/CA1143832A/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
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)
CA000339097A 1978-11-24 1979-11-02 Group coded recording data recovery system Expired CA1143832A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/963,639 US4219851A (en) 1978-11-24 1978-11-24 Group coded recording data recovery system
US963,639 1978-11-24

Publications (1)

Publication Number Publication Date
CA1143832A true CA1143832A (en) 1983-03-29

Family

ID=25507504

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000339097A Expired CA1143832A (en) 1978-11-24 1979-11-02 Group coded recording data recovery system

Country Status (7)

Country Link
US (1) US4219851A (OSRAM)
JP (2) JPS5573912A (OSRAM)
AU (1) AU531322B2 (OSRAM)
CA (1) CA1143832A (OSRAM)
DE (1) DE2946995A1 (OSRAM)
FR (1) FR2442481A1 (OSRAM)
GB (1) GB2039194B (OSRAM)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062541A1 (en) * 1981-04-07 1982-10-13 Honeywell Information Systems Inc. Phase-locked oscillators
US4891717A (en) * 1986-09-22 1990-01-02 Magnetic Peripherals Inc. Methods and apparatus for performing high density isotropic/perpendicular digital magnetic recording
JPH01248301A (ja) * 1988-03-30 1989-10-03 Kyodo Printing Co Ltd 磁気記録媒体およびそのセキュリティ情報の記録再生方法
JP2589759B2 (ja) * 1988-05-27 1997-03-12 松下電器産業株式会社 データ識別装置
US5790946A (en) 1993-07-15 1998-08-04 Rotzoll; Robert R. Wake up device for a communications system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792454A (en) * 1972-01-03 1974-02-12 Honeywell Inf Systems Magnetic strorage system using alternate codes to reduce write current bias
JPS505569U (OSRAM) * 1973-05-16 1975-01-21
JPS505569A (OSRAM) * 1973-05-18 1975-01-21
US3879752A (en) * 1974-04-04 1975-04-22 Iomec Combined sector pulse and data detection system
US3930265A (en) * 1974-06-07 1975-12-30 Vrc California High density magnetic storage system
US4146743A (en) * 1976-08-09 1979-03-27 Hewlett-Packard Company Adaptive sampling decoder-encoder apparatus and method
US4053738A (en) * 1976-09-27 1977-10-11 Honeywell Information Systems Inc. Programmable data envelope detector
US4141494A (en) * 1977-02-25 1979-02-27 Fisher Alan J Digital code reader

Also Published As

Publication number Publication date
JPS5573912A (en) 1980-06-04
GB2039194A (en) 1980-07-30
FR2442481B1 (OSRAM) 1983-06-03
AU531322B2 (en) 1983-08-18
US4219851A (en) 1980-08-26
AU5296579A (en) 1980-05-29
DE2946995A1 (de) 1980-06-04
JPS6418465U (OSRAM) 1989-01-30
FR2442481A1 (fr) 1980-06-20
GB2039194B (en) 1983-01-06

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Legal Events

Date Code Title Description
MKEX Expiry