JPS5920441U - signal detection circuit device - Google Patents
signal detection circuit deviceInfo
- Publication number
- JPS5920441U JPS5920441U JP11487082U JP11487082U JPS5920441U JP S5920441 U JPS5920441 U JP S5920441U JP 11487082 U JP11487082 U JP 11487082U JP 11487082 U JP11487082 U JP 11487082U JP S5920441 U JPS5920441 U JP S5920441U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- circuit
- signal detection
- oscillation
- circuit device
- 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 Signal Processing For Recording (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図は静電容量方式のビデオ・ディスク再生装置の信
号検出回路の回路図、第２図は第１図に示す回路の周波
数対検出電圧の関係を示す特性図、第３図は従来の信号
検出回路の具体的な回路図、第１図
第４図は検波ダイオードの順方向及び逆方向特性を示す
特性図、第５図は局部発振回路の可変抵抗値対発振出力
の関係を示す特性図、第６図は本考案に係る信号検出回
路装置の回路図、第７図は可変容量コンデンサの容量値
対発振出力の関係を示す特性図である。 ”
ａ・・・発振回路（局部発振回路）、ｂ・・・共振回路
、Ｃ・・・検波回路、１０．１１・・・バイアス抵抗、
１２・・・接地容量、１３．１４・・・チョーク・コイ
ル、１５・・・発振トランジスタ、１７． ２０． ２
３・・・パターン・インダクタ、１８．２８・・・可変
容量コンデンサ、２１．２５・・・コンデンサ、２２・
・・バラクタ・ダイオード、２４・・・検波ダイオード
、２６゜２７・・・抵抗。
第３図Figure 1 is a circuit diagram of a signal detection circuit for a capacitive video disc playback device, Figure 2 is a characteristic diagram showing the relationship between frequency and detection voltage of the circuit shown in Figure 1, and Figure 3 is a diagram of a conventional signal detection circuit. A specific circuit diagram of the signal detection circuit, Figure 1. Figure 4 is a characteristic diagram showing the forward and reverse characteristics of the detection diode. Figure 5 is a characteristic diagram showing the relationship between variable resistance value and oscillation output of the local oscillation circuit. 6 is a circuit diagram of the signal detection circuit device according to the present invention, and FIG. 7 is a characteristic diagram showing the relationship between the capacitance value of the variable capacitor and the oscillation output. "a...Oscillation circuit (local oscillation circuit), b...Resonance circuit, C...Detection circuit, 10.11...Bias resistance,
12... Ground capacity, 13.14... Choke coil, 15... Oscillation transistor, 17. 20. 2
3...Pattern inductor, 18.28...Variable capacitor, 21.25...Capacitor, 22.
...Varactor diode, 24...Detection diode, 26°27...Resistor. Figure 3
Claims (1)
される容量変化に応じて共振周波数が変化する共振回路
４介して変調した後、検波回路にて信号検波するように
した静電容量方式ビデオ゛・ディスク再生装置の信号検
出回路において、前記発振回路と前記共振回路間を可変
容量コンデンサを介して接続し、この可変容量コンデン
サを調整することにより、検出回路特性をコントロール
するようにしたことを特徴とする信号検出回路装置。A capacitance type video device in which the oscillation frequency oscillated by an oscillation circuit is modulated through a resonance circuit 4 whose resonance frequency changes according to a change in capacitance detected on a disk, and then the signal is detected by a detection circuit.・In the signal detection circuit of a disc playback device, the oscillation circuit and the resonance circuit are connected via a variable capacitor, and the detection circuit characteristics are controlled by adjusting the variable capacitor. Characteristic signal detection circuit device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11487082U JPS5920441U (en) | 1982-07-30 | 1982-07-30 | signal detection circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11487082U JPS5920441U (en) | 1982-07-30 | 1982-07-30 | signal detection circuit device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5920441U true JPS5920441U (en) | 1984-02-07 |
| JPS6315763Y2 JPS6315763Y2 (en) | 1988-05-06 |
Family
ID=30265366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11487082U Granted JPS5920441U (en) | 1982-07-30 | 1982-07-30 | signal detection circuit device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5920441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61188089A (en) * | 1985-02-13 | 1986-08-21 | フリード・クルツプ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフング | Device consisting of striking device and support unit |
-
1982
- 1982-07-30 JP JP11487082U patent/JPS5920441U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61188089A (en) * | 1985-02-13 | 1986-08-21 | フリード・クルツプ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフング | Device consisting of striking device and support unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6315763Y2 (en) | 1988-05-06 |
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