JPH0293811U - - Google Patents
Info
- Publication number
- JPH0293811U JPH0293811U JP193689U JP193689U JPH0293811U JP H0293811 U JPH0293811 U JP H0293811U JP 193689 U JP193689 U JP 193689U JP 193689 U JP193689 U JP 193689U JP H0293811 U JPH0293811 U JP H0293811U
- Authority
- JP
- Japan
- Prior art keywords
- broadcast wave
- pll circuit
- variable frequency
- audio signal
- frequency oscillator
- 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
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Superheterodyne Receivers (AREA)
Description
図は本考案の一実施例を示すブロツク図である
。
７……ＰＬＬ回路、６……同期ＡＭ検出器。
The figure is a block diagram showing one embodiment of the present invention. 7...PLL circuit, 6...Synchronized AM detector.
Claims (1)
位相比較し、この位相比較出力により上記可変周
波数発振器を制御して、上記ＡＭ放送波に位相同
期した基準信号を得るＰＬＬ回路と、上記基準信
号により上記ＡＭ放送波を同期検波して音声信号
を復調する同期検波手段とを有するＡＭ検波器に
おいて、上記ＰＬＬ回路中の位相比較出力を上記
音声信号に加算もしくは減算することを特徴とす
るＡＭ検波器。 A PLL circuit that compares the phases of the output of the variable frequency oscillator and the input AM broadcast wave, controls the variable frequency oscillator using the phase comparison output, and obtains a reference signal phase-synchronized with the AM broadcast wave; and synchronous detection means for synchronously detecting the AM broadcast wave and demodulating the audio signal, wherein the AM detector adds or subtracts a phase comparison output in the PLL circuit to or from the audio signal. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP193689U JPH0293811U (en) | 1989-01-11 | 1989-01-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP193689U JPH0293811U (en) | 1989-01-11 | 1989-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0293811U true JPH0293811U (en) | 1990-07-25 |
Family
ID=31202263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP193689U Pending JPH0293811U (en) | 1989-01-11 | 1989-01-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0293811U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS628716B2 (en) * | 1982-06-15 | 1987-02-24 | Matsushita Electric Ind Co Ltd |
-
1989
- 1989-01-11 JP JP193689U patent/JPH0293811U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS628716B2 (en) * | 1982-06-15 | 1987-02-24 | Matsushita Electric Ind Co Ltd |