DE2659468C2 - Schaltung zur Einstellung der Frequenz und Phase von Oszillator-Taktpulsen in Anpassung an die aus einem Aufzeichnungsträger gewonnenen Vorlauf- und Datensignale - Google Patents

Schaltung zur Einstellung der Frequenz und Phase von Oszillator-Taktpulsen in Anpassung an die aus einem Aufzeichnungsträger gewonnenen Vorlauf- und Datensignale

Info

Publication number
DE2659468C2
DE2659468C2 DE2659468A DE2659468A DE2659468C2 DE 2659468 C2 DE2659468 C2 DE 2659468C2 DE 2659468 A DE2659468 A DE 2659468A DE 2659468 A DE2659468 A DE 2659468A DE 2659468 C2 DE2659468 C2 DE 2659468C2
Authority
DE
Germany
Prior art keywords
data
signal
frequency
flip
phase
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
DE2659468A
Other languages
German (de)
English (en)
Other versions
DE2659468A1 (de
Inventor
Robert L. Santa Clara Calif. Cloke
W.Donald San Jose Calif. Huber
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.)
Unisys Corp
Original Assignee
Sperry 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 Sperry Corp filed Critical Sperry Corp
Publication of DE2659468A1 publication Critical patent/DE2659468A1/de
Application granted granted Critical
Publication of DE2659468C2 publication Critical patent/DE2659468C2/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE2659468A 1976-01-08 1976-12-30 Schaltung zur Einstellung der Frequenz und Phase von Oszillator-Taktpulsen in Anpassung an die aus einem Aufzeichnungsträger gewonnenen Vorlauf- und Datensignale Expired DE2659468C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64759476A 1976-01-08 1976-01-08

Publications (2)

Publication Number Publication Date
DE2659468A1 DE2659468A1 (de) 1977-07-28
DE2659468C2 true DE2659468C2 (de) 1984-05-03

Family

ID=24597574

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2659468A Expired DE2659468C2 (de) 1976-01-08 1976-12-30 Schaltung zur Einstellung der Frequenz und Phase von Oszillator-Taktpulsen in Anpassung an die aus einem Aufzeichnungsträger gewonnenen Vorlauf- und Datensignale

Country Status (7)

Country Link
US (1) US4080576A (enExample)
JP (1) JPS5286029A (enExample)
CA (1) CA1057860A (enExample)
DE (1) DE2659468C2 (enExample)
ES (1) ES454833A1 (enExample)
FR (1) FR2337968A1 (enExample)
IT (1) IT1203054B (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195264A (en) * 1978-04-26 1980-03-25 Gte Sylvania Incorporated Noise detection circuit
US4229824A (en) * 1978-07-21 1980-10-21 Cubic Corporation Method and apparatus for synchronizing electrical signals
US4222009A (en) * 1978-11-02 1980-09-09 Sperry Corporation Phase lock loop preconditioning circuit
JPS5572225A (en) * 1978-11-27 1980-05-30 Nec Corp Improper timing detection circuit
US4200845A (en) * 1978-12-22 1980-04-29 Sperry Rand Corporation Phase comparator with dual phase detectors
FR2458181A1 (fr) * 1979-06-01 1980-12-26 Thomson Csf Dispositif de synchronisation d'un signal d'horloge et systemes de transmission de donnees synchrones comportant un tel dispositif
US4316150A (en) * 1980-01-09 1982-02-16 Tektronix, Inc. Phase locked loop including phase detector system controlled by enable pulses
US4420776A (en) * 1981-11-30 1983-12-13 International Business Machines PSK Modulation in AC bias data recording
US4475220A (en) * 1982-01-19 1984-10-02 Rca Corporation Symbol synchronizer for MPSK signals
US5004933A (en) * 1986-06-02 1991-04-02 Tektronix, Inc. Phase-selectable flip-flop
US4972161A (en) * 1989-06-28 1990-11-20 Digital Equipment Corporation Clock recovery for serial data communications system
US7588029B2 (en) * 2000-03-21 2009-09-15 Fisher & Paykel Healthcare Limited Humidified gases delivery apparatus
US7786763B1 (en) 2008-12-30 2010-08-31 Integrated Device Technology, Inc. Clock circuit with harmonic frequency detector
US8289821B1 (en) 2010-12-21 2012-10-16 Western Digital (Fremont), Llc Method and system for pulsing EAMR disk drives

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3470475A (en) * 1966-09-28 1969-09-30 Nasa Automatic frequency discriminators and control for a phase-lock loop providing frequency preset capabilities
US3514698A (en) * 1967-07-17 1970-05-26 Thomas J Rey Device for generating or measuring preselected frequency signals
US3614635A (en) * 1969-12-31 1971-10-19 Ibm Variable frequency control system and data standardizer
US3755748A (en) * 1972-03-06 1973-08-28 Motorola Inc Digital phase shifter/synchronizer and method of shifting
US3870900A (en) * 1973-11-12 1975-03-11 Ibm Phase discriminator having unlimited capture range

Also Published As

Publication number Publication date
FR2337968B3 (enExample) 1979-09-07
IT1203054B (it) 1989-02-15
CA1057860A (en) 1979-07-03
US4080576A (en) 1978-03-21
DE2659468A1 (de) 1977-07-28
FR2337968A1 (fr) 1977-08-05
JPS5286029A (en) 1977-07-16
ES454833A1 (es) 1978-01-01

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Legal Events

Date Code Title Description
OGA New person/name/address of the applicant
D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
8339 Ceased/non-payment of the annual fee
8327 Change in the person/name/address of the patent owner

Owner name: UNISYS CORP. (N.D.GES.D.STAATES DELAWARE), BLUE BE

8328 Change in the person/name/address of the agent

Free format text: EISENFUEHR, G., DIPL.-ING. SPEISER, D., DIPL.-ING. RABUS, W., DR.-ING. BRUEGGE, J., DIPL.-ING., 2800 BREMEN MAIWALD, W., DIPL.-CHEM.DR., PAT.-ANWAELTE, 8000 MUENCHEN