JPS60139358U - Digital FM tuner - Google Patents
Digital FM tunerInfo
- Publication number
- JPS60139358U JPS60139358U JP2688084U JP2688084U JPS60139358U JP S60139358 U JPS60139358 U JP S60139358U JP 2688084 U JP2688084 U JP 2688084U JP 2688084 U JP2688084 U JP 2688084U JP S60139358 U JPS60139358 U JP S60139358U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- converts
- pcm
- pnm
- 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
- Stereo-Broadcasting Methods (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はＦＭチューナの゛構成を示す回路図、第２図は
ステレオコンポジット信号の周波数スペクトラム、第３
図は本考案の一実施例の回路図、第４図゛は第３図の回
路の信号の波形図である。Figure 1 is a circuit diagram showing the configuration of an FM tuner, Figure 2 is the frequency spectrum of a stereo composite signal, and Figure 3 is a circuit diagram showing the configuration of an FM tuner.
The figure is a circuit diagram of one embodiment of the present invention, and FIG. 4 is a signal waveform diagram of the circuit of FIG. 3.
Claims (1)
、この方形波をパルス幅変調信号に変換するＰＷＭ回路
と、前記ＰＷＭ回路からの出力信号をパルス数変調信号
に変換するＰＮＭ回路と、前記ＰＮＭ回路の出力信号を
ＰＣＭ信号に変換する、ＰＣＭ回路とからなり、ステレ
オ復調段はあキロヘルツのゲートパルス信号によってサ
ンプリング、 するステレオ検出回路からなることを
特徴とするディジタルＦＭチューナ。The FM detection stage includes a shaping circuit that shapes an input FM wave into a square wave, a PWM circuit that converts the square wave into a pulse width modulation signal, and a PNM circuit that converts the output signal from the PWM circuit into a pulse number modulation signal. , a PCM circuit that converts the output signal of the PNM circuit into a PCM signal, and a stereo demodulation stage that includes a stereo detection circuit that performs sampling using a kilohertz gate pulse signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2688084U JPS60139358U (en) | 1984-02-27 | 1984-02-27 | Digital FM tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2688084U JPS60139358U (en) | 1984-02-27 | 1984-02-27 | Digital FM tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60139358U true JPS60139358U (en) | 1985-09-14 |
Family
ID=30523305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2688084U Pending JPS60139358U (en) | 1984-02-27 | 1984-02-27 | Digital FM tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60139358U (en) |
-
1984
- 1984-02-27 JP JP2688084U patent/JPS60139358U/en active Pending
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