JPS5753158A - Automatic frequency setting device for voltage control variable frequency oscillator - Google Patents
Automatic frequency setting device for voltage control variable frequency oscillatorInfo
- Publication number
- JPS5753158A JPS5753158A JP55127314A JP12731480A JPS5753158A JP S5753158 A JPS5753158 A JP S5753158A JP 55127314 A JP55127314 A JP 55127314A JP 12731480 A JP12731480 A JP 12731480A JP S5753158 A JPS5753158 A JP S5753158A
- Authority
- JP
- Japan
- Prior art keywords
- counter
- output
- value
- vco
- latch circuit
- 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.)
- Pending
Links
- 230000010355 oscillation Effects 0.000 abstract 3
- 230000002441 reversible effect Effects 0.000 abstract 3
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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/187—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop
- H03L7/189—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop comprising a D/A converter for generating a coarse tuning voltage
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55127314A JPS5753158A (en) | 1980-09-16 | 1980-09-16 | Automatic frequency setting device for voltage control variable frequency oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55127314A JPS5753158A (en) | 1980-09-16 | 1980-09-16 | Automatic frequency setting device for voltage control variable frequency oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5753158A true JPS5753158A (en) | 1982-03-30 |
Family
ID=14956869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55127314A Pending JPS5753158A (en) | 1980-09-16 | 1980-09-16 | Automatic frequency setting device for voltage control variable frequency oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5753158A (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63242394A (ja) * | 1987-03-31 | 1988-10-07 | Kensetsusho Doboku Kenkyu Shocho | 排水処理方法およびその装置 |
| US4998075A (en) * | 1989-10-26 | 1991-03-05 | Western Digital Corporation | Programmable multiple oscillator circuit |
-
1980
- 1980-09-16 JP JP55127314A patent/JPS5753158A/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63242394A (ja) * | 1987-03-31 | 1988-10-07 | Kensetsusho Doboku Kenkyu Shocho | 排水処理方法およびその装置 |
| JPH0367756B2 (ja) * | 1987-03-31 | 1991-10-24 | Kensetsusho Doboku Kenkyu Shocho | |
| US4998075A (en) * | 1989-10-26 | 1991-03-05 | Western Digital Corporation | Programmable multiple oscillator circuit |
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