JPH0243008U - - Google Patents
Info
- Publication number
- JPH0243008U JPH0243008U JP12226988U JP12226988U JPH0243008U JP H0243008 U JPH0243008 U JP H0243008U JP 12226988 U JP12226988 U JP 12226988U JP 12226988 U JP12226988 U JP 12226988U JP H0243008 U JPH0243008 U JP H0243008U
- Authority
- JP
- Japan
- Prior art keywords
- same
- phase timing
- demodulation circuit
- signal
- outputting
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
第１図はこの考案の一実施例に係るＦＭ信号の
デイジタル復調回路の回路図、第２図は、第１図
の動作を示すタイムチヤート、第３図は、従来の
ＦＭ信号のデイジタル復調回路の回路図である。
主な符号の説明、３４：同一位相タイミング検
出手段、３８：カウンタ、４０：ラツチ回路、４
２：サンプリング回路、４３：周期計測手段。
Fig. 1 is a circuit diagram of an FM signal digital demodulation circuit according to an embodiment of the invention, Fig. 2 is a time chart showing the operation of Fig. 1, and Fig. 3 is a conventional FM signal digital demodulation circuit. FIG. Explanation of main symbols, 34: Same phase timing detection means, 38: Counter, 40: Latch circuit, 4
2: Sampling circuit, 43: Period measuring means.
Claims (1)
同一位相タイミング検出信号を出力する同一位相
タイミング検出手段と、 所定の一定時間毎に、同一位相タイミング検出
信号から周期を計測して周期データを出力する周
期計測手段と、 を備えたことを特徴とするＦＭ信号のデイジタ
ル復調回路。 (2) 同一位相タイミング検出手段と周期計測手
段との間に、所定の分周比の分周手段を設けたこ
と、を特徴とする請求項１記載のＦＭ信号のデイ
ジタル復調回路。[Claims for Utility Model Registration] (1) Same-phase timing detection means for detecting the same-phase timing of FM signals and outputting the same-phase timing detection signal; A digital demodulation circuit for an FM signal, comprising: period measuring means for measuring and outputting period data. (2) The digital demodulation circuit for an FM signal according to claim 1, further comprising frequency dividing means having a predetermined frequency division ratio between the same phase timing detecting means and the period measuring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12226988U JPH0243008U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12226988U JPH0243008U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243008U true JPH0243008U (en) | 1990-03-26 |
Family
ID=31370042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12226988U Pending JPH0243008U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243008U (en) |
-
1988
- 1988-09-19 JP JP12226988U patent/JPH0243008U/ja active Pending
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