JPS6019260U - FM tuner - Google Patents
FM tunerInfo
- Publication number
- JPS6019260U JPS6019260U JP1983110997U JP11099783U JPS6019260U JP S6019260 U JPS6019260 U JP S6019260U JP 1983110997 U JP1983110997 U JP 1983110997U JP 11099783 U JP11099783 U JP 11099783U JP S6019260 U JPS6019260 U JP S6019260U
- Authority
- JP
- Japan
- Prior art keywords
- time constant
- emphasis
- band
- broadcasting
- frequency band
- 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.)
- Granted
Links
Landscapes
- Television Receiver Circuits (AREA)
- Noise Elimination (AREA)
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
各図はいずれも本考案のＦＭチューナの実施例を示すも
ので、第１図は本考案のＦＭチューナのフロックダイヤ
グラム、第２図は第１図のＦＭチューナにおけるスイッ
チＳ１．Ｓ２．Ｓ３をトランジスタ等のスイッチング素
子で構成した場合を示す要部のブ叱ンクダイヤグラムで
ある。
符号の説明、ＣＴ・・・・・・同調用バリキャップダイ
オード、ｃｏ・・・・・・局発用バリキャップダイオー
ド、ＶＣ・・・・・・電圧比較回路、ＭＰＸ・・・・・
・ＦＭステレオ復調回路、ＴＣＬ、ＴＣＰ・川・・ディ
エンファシス時定数回路、８１〜・Ｓ３・・・・・・Ｉ
Ｃアナログスイッチ、Ｓ４・・・・・・スイッチ、■ｒ
ｅｆ・・・・・・基準電圧、ＬＣｈ・・・・・・左チヤ
ンネル出力端子、Ｒｃｈ・・・・・・左チヤンネル出力
端子。
九ト冒イー−−−
ＭＰｘEach figure shows an embodiment of the FM tuner of the present invention. FIG. 1 is a block diagram of the FM tuner of the present invention, and FIG. 2 is a block diagram of the FM tuner of the present invention. S2. It is a blank diagram of the main part showing a case where S3 is configured with a switching element such as a transistor. Explanation of symbols, CT: Tuning varicap diode, co: Local oscillator varicap diode, VC: Voltage comparison circuit, MPX:
・FM stereo demodulation circuit, TCL, TCP・De-emphasis time constant circuit, 81~・S3・・・・・・I
C analog switch, S4... switch, ■r
ef...Reference voltage, LCh...Left channel output terminal, Rch...Left channel output terminal. Kuto Exploration --- MPx
Claims (1)
−ｙユーナにおいて、受信周波数がいずれの周波数帯域
に属するかを判別するだめの帯域判別手段と、ＦＭ放送
及びテレビ音声放送のそれぞれに応じたティエンファシ
ス時定数を設定可能な時定数手段と、前記帯域判別手段
の出力に応じて前記時定数手段のディエンファシス時定
数をその受信放送に応じた値へと切り換えるとともに、
ＦＭ放送受信時には前記時定数手段を構成するコンデン
サ素子の一部を左、右チヤンネル間に接続可能となすス
イッチ手段とからなり、受信周波数がいずれの帯域にあ
っても、常にその受信した放送に応じた時定数でディエ
ンファシスできるとともに、ＦＭ放送受信時には、前記
時定数手段を構成するコンデンサ素子の一部をもって、
左、右チャンネル信号の高域成分を混合し得るように構
成してなるＦＭチューナ。FM that can receive FM frequency band and TV frequency band
- in the Yuna, a band determining means for determining to which frequency band the received frequency belongs; a time constant means capable of setting a tie-emphasis time constant according to each of FM broadcasting and TV audio broadcasting; Switching the de-emphasis time constant of the time constant means to a value corresponding to the received broadcast according to the output of the band discrimination means,
When receiving an FM broadcast, it is comprised of a switch means that allows a part of the capacitor element constituting the time constant means to be connected between the left and right channels. De-emphasis can be performed with a corresponding time constant, and when receiving FM broadcasting, a part of the capacitor element constituting the time constant means can be used.
An FM tuner configured to mix high frequency components of left and right channel signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983110997U JPS6019260U (en) | 1983-07-19 | 1983-07-19 | FM tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983110997U JPS6019260U (en) | 1983-07-19 | 1983-07-19 | FM tuner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6019260U true JPS6019260U (en) | 1985-02-09 |
| JPH0346604Y2 JPH0346604Y2 (en) | 1991-10-02 |
Family
ID=30257919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983110997U Granted JPS6019260U (en) | 1983-07-19 | 1983-07-19 | FM tuner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6019260U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52104310U (en) * | 1976-02-04 | 1977-08-08 | ||
| JPS5555639A (en) * | 1978-10-19 | 1980-04-23 | Nippon Gakki Seizo Kk | Demodulation system of multiplex modulation wave |
-
1983
- 1983-07-19 JP JP1983110997U patent/JPS6019260U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52104310U (en) * | 1976-02-04 | 1977-08-08 | ||
| JPS5555639A (en) * | 1978-10-19 | 1980-04-23 | Nippon Gakki Seizo Kk | Demodulation system of multiplex modulation wave |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346604Y2 (en) | 1991-10-02 |
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