JPS58189631U - Digital AFC circuit - Google Patents
Digital AFC circuitInfo
- Publication number
- JPS58189631U JPS58189631U JP8790282U JP8790282U JPS58189631U JP S58189631 U JPS58189631 U JP S58189631U JP 8790282 U JP8790282 U JP 8790282U JP 8790282 U JP8790282 U JP 8790282U JP S58189631 U JPS58189631 U JP S58189631U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- afc circuit
- output
- digital afc
- window comparator
- 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
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はＡＦＣ制御系を示すブロック図、第２図はこの
考案のデジタルＡＦＣ回路の一実施例の結線図である。
３・・・ＦＭ検波器、４・・・ＡＦＣ回路、５・・・ア
ップダウンカウンタ回路、６・・・局部発振器、ＣＰ・
・・ウィンドコンパレータ、ＯＣ・・・出力回路。FIG. 1 is a block diagram showing an AFC control system, and FIG. 2 is a wiring diagram of an embodiment of the digital AFC circuit of this invention. 3...FM detector, 4...AFC circuit, 5...up/down counter circuit, 6...local oscillator, CP・
...Window comparator, OC...output circuit.
Claims (1)
た上限および下限の両基準電圧の範囲内であるか否かを
検出するウィンドコンパレータと、周波数シンセサイザ
から成る局部発振器の発振周波数制御用のアップダウン
カウンタ回路を上記ウィンドコンパレータの出力により
制御する出力回路とを具備して成るデジタルＡＦＣ回路
。A window comparator that detects whether the output voltage of the frequency discrimination characteristic of the FM detector is within the preset upper and lower reference voltage ranges, and a frequency synthesizer for controlling the oscillation frequency of the local oscillator. A digital AFC circuit comprising: an output circuit that controls a down counter circuit using the output of the window comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8790282U JPS58189631U (en) | 1982-06-11 | 1982-06-11 | Digital AFC circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8790282U JPS58189631U (en) | 1982-06-11 | 1982-06-11 | Digital AFC circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58189631U true JPS58189631U (en) | 1983-12-16 |
Family
ID=30096595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8790282U Pending JPS58189631U (en) | 1982-06-11 | 1982-06-11 | Digital AFC circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58189631U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434664A (en) * | 1977-08-23 | 1979-03-14 | Seiko Instr & Electronics Ltd | Osciliation frequency adjuster |
| JPS5636234A (en) * | 1979-08-31 | 1981-04-09 | Matsushita Electric Ind Co Ltd | Frequency following type voltage control oscillating unit |
-
1982
- 1982-06-11 JP JP8790282U patent/JPS58189631U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434664A (en) * | 1977-08-23 | 1979-03-14 | Seiko Instr & Electronics Ltd | Osciliation frequency adjuster |
| JPS5636234A (en) * | 1979-08-31 | 1981-04-09 | Matsushita Electric Ind Co Ltd | Frequency following type voltage control oscillating unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58189631U (en) | Digital AFC circuit | |
| JPS5929812U (en) | FM modulation circuit | |
| JPS58144929U (en) | PLL synthesizer tuner | |
| JPS6090931U (en) | Automatic tuning stop signal generation circuit | |
| JPS58191749U (en) | AM-FM tuner | |
| JPS5929840U (en) | FM/AM receiver | |
| JPS59189357U (en) | wideband radio | |
| JPS5927639U (en) | Phase throttle loop circuit | |
| JPS6064640U (en) | phase synchronized circuit | |
| JPS6114578U (en) | color synchronization circuit | |
| JPS59140540U (en) | Oscillation synchronous circuit | |
| JPS60158330U (en) | Scan automatic switching electronic circuit for electronic tuning radio | |
| JPS60116732U (en) | Chuyuna | |
| JPS6019238U (en) | FM signal generator | |
| JPS59132248U (en) | phase locked circuit | |
| JPS59147344U (en) | Receiving machine | |
| JPS58129785U (en) | Color signal processing circuit | |
| JPS5830341U (en) | PLL circuit | |
| JPS60150847U (en) | stereo multiplex circuit | |
| JPS5811342U (en) | Phase-locked frequency synthesizer | |
| JPS6093322U (en) | Voltage controlled attenuation circuit | |
| JPS5976147U (en) | automatic frequency control circuit | |
| JPS6019232U (en) | automatic tuning device | |
| JPS5843044U (en) | frequency synthesizer | |
| JPS5929813U (en) | Structure of frequency modulation circuit |