JPS54850A - Digital afc circuit - Google Patents
Digital afc circuitInfo
- Publication number
- JPS54850A JPS54850A JP6593877A JP6593877A JPS54850A JP S54850 A JPS54850 A JP S54850A JP 6593877 A JP6593877 A JP 6593877A JP 6593877 A JP6593877 A JP 6593877A JP S54850 A JPS54850 A JP S54850A
- Authority
- JP
- Japan
- Prior art keywords
- afc circuit
- digital afc
- circuit
- digital
- 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.)
- Pending
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
- H03L7/16—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
- H03L7/181—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 numerical count result being used for locking the loop, the counter counting during fixed time intervals
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To obtain a high-stability and low-cost AFC circuit by using a digital circuit comprising the frequency/period counter and a subtractor as the frequency error detector circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6593877A JPS54850A (en) | 1977-06-03 | 1977-06-03 | Digital afc circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6593877A JPS54850A (en) | 1977-06-03 | 1977-06-03 | Digital afc circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54850A true JPS54850A (en) | 1979-01-06 |
Family
ID=13301395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6593877A Pending JPS54850A (en) | 1977-06-03 | 1977-06-03 | Digital afc circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54850A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56169437A (en) * | 1980-05-30 | 1981-12-26 | Toshiba Corp | Oscillator |
JPS56169436A (en) * | 1980-05-30 | 1981-12-26 | Toshiba Corp | Oscillator |
FR2512608A1 (en) * | 1981-09-04 | 1983-03-11 | Tektronix Inc | PROGRAMMABLE ELECTRICAL SIGNAL GENERATOR |
JPS59167722A (en) * | 1983-03-14 | 1984-09-21 | Kokusai Kikai Shindo Kenkyusho:Kk | Automatic oscillation controller |
JPS61501184A (en) * | 1984-02-09 | 1986-06-12 | アメリカン テレフオン アンド テレグラフ カムパニ− | Precisely controlled frequency synthesizer for use under unstable and fluctuating input frequencies |
-
1977
- 1977-06-03 JP JP6593877A patent/JPS54850A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56169437A (en) * | 1980-05-30 | 1981-12-26 | Toshiba Corp | Oscillator |
JPS56169436A (en) * | 1980-05-30 | 1981-12-26 | Toshiba Corp | Oscillator |
FR2512608A1 (en) * | 1981-09-04 | 1983-03-11 | Tektronix Inc | PROGRAMMABLE ELECTRICAL SIGNAL GENERATOR |
JPS59167722A (en) * | 1983-03-14 | 1984-09-21 | Kokusai Kikai Shindo Kenkyusho:Kk | Automatic oscillation controller |
JPS61501184A (en) * | 1984-02-09 | 1986-06-12 | アメリカン テレフオン アンド テレグラフ カムパニ− | Precisely controlled frequency synthesizer for use under unstable and fluctuating input frequencies |
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