BR7308155D0 - Aparelho e metodo de recuperacao de dados - Google Patents

Aparelho e metodo de recuperacao de dados

Info

Publication number
BR7308155D0
BR7308155D0 BR8155/73A BR815573A BR7308155D0 BR 7308155 D0 BR7308155 D0 BR 7308155D0 BR 8155/73 A BR8155/73 A BR 8155/73A BR 815573 A BR815573 A BR 815573A BR 7308155 D0 BR7308155 D0 BR 7308155D0
Authority
BR
Brazil
Prior art keywords
data recovery
recovery apparatus
data
recovery
Prior art date
Application number
BR8155/73A
Other languages
English (en)
Inventor
I Walenta
Original Assignee
Burroughs 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 Burroughs Corp filed Critical Burroughs Corp
Publication of BR7308155D0 publication Critical patent/BR7308155D0/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)
BR8155/73A 1972-11-01 1973-10-18 Aparelho e metodo de recuperacao de dados BR7308155D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US30291572A 1972-11-01 1972-11-01

Publications (1)

Publication Number Publication Date
BR7308155D0 true BR7308155D0 (pt) 1974-07-11

Family

ID=23169770

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8155/73A BR7308155D0 (pt) 1972-11-01 1973-10-18 Aparelho e metodo de recuperacao de dados

Country Status (10)

Country Link
US (1) US3794987A (pt)
JP (1) JPS4978520A (pt)
BE (1) BE806088A (pt)
BR (1) BR7308155D0 (pt)
CA (1) CA994473A (pt)
DE (1) DE2349685C2 (pt)
FR (1) FR2204925B1 (pt)
GB (1) GB1415584A (pt)
IT (1) IT1014512B (pt)
NL (1) NL180051C (pt)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1063719A (en) * 1975-04-28 1979-10-02 Control Data Corporation Phase locked loop decoder
US4167760A (en) * 1978-03-28 1979-09-11 Ampex Corporation Bi-phase decoder apparatus and method
US4218770A (en) * 1978-09-08 1980-08-19 Bell Telephone Laboratories, Incorporated Delay modulation data transmission system
US4222080A (en) * 1978-12-21 1980-09-09 International Business Machines Corporation Velocity tolerant decoding technique
GB2057226B (en) * 1979-07-10 1984-02-22 Mfe Ltd Decoding mfm data signals
US4635140A (en) * 1982-05-08 1987-01-06 Victor Company Of Japan, Limited Digital recording/playback system with limited frequency range
US4532559A (en) * 1983-02-14 1985-07-30 Prime Computer, Inc. Apparatus for decoding phase encoded data
US4550391A (en) * 1983-02-22 1985-10-29 Western Digital Corporation Data capture window extension circuit
US4633488A (en) * 1984-11-13 1986-12-30 Digital Equipment Corporation Phase-locked loop for MFM data recording
US5151985A (en) * 1987-05-28 1992-09-29 Apple Computer, Inc. Disk drive controller
GB2205467B (en) * 1987-05-28 1992-02-12 Apple Computer Disk drive controller
JP3067349B2 (ja) * 1991-12-02 2000-07-17 ソニー株式会社 ディスク状記録媒体のアドレス情報検出装置
KR100261196B1 (ko) * 1991-12-02 2000-07-01 이데이 노부유끼 자기 디스크 기록매체의 어드레스 정보 검출장치
JP3021880B2 (ja) * 1991-12-06 2000-03-15 ソニー株式会社 磁気ディスク記録媒体のアドレスマーク検出装置
US5703525A (en) * 1996-10-09 1997-12-30 Texas Instruments Incorporated Low cost system for FSK demodulation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3226685A (en) * 1961-06-02 1965-12-28 Potter Instrument Co Inc Digital recording systems utilizing ternary, n bit binary and other self-clocking forms
US3500385A (en) * 1967-07-17 1970-03-10 Ibm Coded data storage and retrieval system
US3636536A (en) * 1968-03-21 1972-01-18 Leach Corp Derived clock circuit in a phase modulated digital data handling system
US3609560A (en) * 1970-01-09 1971-09-28 Bedford Associates Inc Data separation circuit for magnetic recorder memories
US3689903A (en) * 1970-10-16 1972-09-05 Honeywell Inc Voltage controlled oscillator with constrained period of frequency change
US3656149A (en) * 1970-11-23 1972-04-11 Honeywell Inf Systems Three frequency data separator
US3684967A (en) * 1971-01-08 1972-08-15 Cogar Corp Automatic control of position and width of a tracking window in a data recovery system
US3737895A (en) * 1971-08-02 1973-06-05 Edmac Ass Inc Bi-phase data recorder

Also Published As

Publication number Publication date
US3794987A (en) 1974-02-26
FR2204925A1 (pt) 1974-05-24
BE806088A (fr) 1974-02-01
NL180051C (nl) 1986-12-16
NL180051B (nl) 1986-07-16
JPS4978520A (pt) 1974-07-29
FR2204925B1 (pt) 1978-02-10
IT1014512B (it) 1977-04-30
NL7313908A (pt) 1974-05-03
GB1415584A (en) 1975-11-26
DE2349685C2 (de) 1982-09-23
CA994473A (en) 1976-08-03
DE2349685A1 (de) 1974-05-09

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