GB8319601D0 - Variable frequency oscillator - Google Patents

Variable frequency oscillator

Info

Publication number
GB8319601D0
GB8319601D0 GB838319601A GB8319601A GB8319601D0 GB 8319601 D0 GB8319601 D0 GB 8319601D0 GB 838319601 A GB838319601 A GB 838319601A GB 8319601 A GB8319601 A GB 8319601A GB 8319601 D0 GB8319601 D0 GB 8319601D0
Authority
GB
United Kingdom
Prior art keywords
variable frequency
frequency oscillator
oscillator
variable
frequency
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.)
Granted
Application number
GB838319601A
Other versions
GB2127243A (en
GB2127243B (en
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.)
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Epson 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 Seiko Epson Corp, Suwa Seikosha KK, Epson Corp filed Critical Seiko Epson Corp
Publication of GB8319601D0 publication Critical patent/GB8319601D0/en
Publication of GB2127243A publication Critical patent/GB2127243A/en
Application granted granted Critical
Publication of GB2127243B publication Critical patent/GB2127243B/en
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
    • H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
    • 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
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation
    • 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
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0995—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator comprising a ring oscillator
GB08319601A 1982-08-05 1983-07-20 Variable frequency oscillator Expired GB2127243B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57136683A JPH0712146B2 (en) 1982-08-05 1982-08-05 VFO circuit

Publications (3)

Publication Number Publication Date
GB8319601D0 true GB8319601D0 (en) 1983-08-24
GB2127243A GB2127243A (en) 1984-04-04
GB2127243B GB2127243B (en) 1986-03-19

Family

ID=15181029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08319601A Expired GB2127243B (en) 1982-08-05 1983-07-20 Variable frequency oscillator

Country Status (4)

Country Link
JP (1) JPH0712146B2 (en)
GB (1) GB2127243B (en)
HK (1) HK80889A (en)
SG (1) SG21289G (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215159U (en) * 1985-07-12 1987-01-29
CA1284361C (en) * 1986-08-29 1991-05-21 Mitel Corporation Analog phase locked loop
KR960015678B1 (en) * 1990-10-23 1996-11-20 세이꼬 엡슨 가부시끼가이샤 Voltage-controlled oscillating circuit and phase-locke loop
US5646562A (en) * 1993-07-21 1997-07-08 Seiko Epson Corporation Phase synchronization circuit, one-shot pulse generating circuit and signal processing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616886B2 (en) * 1974-12-30 1981-04-18
JPS5260052A (en) * 1975-11-12 1977-05-18 Fujitsu Ltd Phase control circuit featuring self-run frequency setting medium
US4131861A (en) * 1977-12-30 1978-12-26 International Business Machines Corporation Variable frequency oscillator system including two matched oscillators controlled by a phase locked loop
JPS5924191Y2 (en) * 1979-07-13 1984-07-18 三洋電機株式会社 Synthesizer-receiver AFC circuit
JPS57181232A (en) * 1981-04-30 1982-11-08 Fujitsu Ltd Voltage-controlled oscillator circuit

Also Published As

Publication number Publication date
JPS5928209A (en) 1984-02-14
GB2127243A (en) 1984-04-04
HK80889A (en) 1989-10-20
GB2127243B (en) 1986-03-19
JPH0712146B2 (en) 1995-02-08
SG21289G (en) 1992-12-04

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 20030719