SG21289G - Variable frequency oscillator - Google Patents
Variable frequency oscillatorInfo
- Publication number
- SG21289G SG21289G SG21289A SG21289A SG21289G SG 21289 G SG21289 G SG 21289G SG 21289 A SG21289 A SG 21289A SG 21289 A SG21289 A SG 21289A SG 21289 G SG21289 G SG 21289G
- Authority
- SG
- Singapore
- Prior art keywords
- variable frequency
- frequency oscillator
- oscillator
- variable
- frequency
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57136683A JPH0712146B2 (en) | 1982-08-05 | 1982-08-05 | VFO circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
SG21289G true SG21289G (en) | 1992-12-04 |
Family
ID=15181029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG21289A SG21289G (en) | 1982-08-05 | 1989-04-07 | 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)
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 |
US5302919A (en) * | 1990-10-23 | 1994-04-12 | Seiko Epson Corporation | VCO having voltage-to-current converter and PLL using same |
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)
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 |
-
1982
- 1982-08-05 JP JP57136683A patent/JPH0712146B2/en not_active Expired - Lifetime
-
1983
- 1983-07-20 GB GB08319601A patent/GB2127243B/en not_active Expired
-
1989
- 1989-04-07 SG SG21289A patent/SG21289G/en unknown
- 1989-10-12 HK HK80889A patent/HK80889A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB2127243A (en) | 1984-04-04 |
JPH0712146B2 (en) | 1995-02-08 |
GB2127243B (en) | 1986-03-19 |
HK80889A (en) | 1989-10-20 |
JPS5928209A (en) | 1984-02-14 |
GB8319601D0 (en) | 1983-08-24 |
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