JPS6347678U - - Google Patents
Info
- Publication number
- JPS6347678U JPS6347678U JP14128986U JP14128986U JPS6347678U JP S6347678 U JPS6347678 U JP S6347678U JP 14128986 U JP14128986 U JP 14128986U JP 14128986 U JP14128986 U JP 14128986U JP S6347678 U JPS6347678 U JP S6347678U
- Authority
- JP
- Japan
- Prior art keywords
- audio
- detection
- circuit
- damping
- composite signal
- 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 11
- 238000013016 damping Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims 3
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の音声多重用テレビジヨン受像
機の一実施例を示す回路図、第２図は従来の音声
多重用テレビジヨン受像機のブロツク図である。
４……音声検波回路、５……音声多重復調器、
１２……同調用コイル、１３……同調用コンデン
サ、４３，４４……ダンピング抵抗、４５……電
界効果型トランジスタ、４６……前置増幅器、４
７……直線検波器。
FIG. 1 is a circuit diagram showing an embodiment of the audio multiplexing television receiver of the present invention, and FIG. 2 is a block diagram of a conventional audio multiplexing television receiver. 4...Audio detection circuit, 5...Audio multiplex demodulator,
12... Tuning coil, 13... Tuning capacitor, 43, 44... Damping resistor, 45... Field effect transistor, 46... Preamplifier, 4
7... Linear detector.
Claims (1)
回路より取り出した音声中間周波信号をＦＭ検波
して音声多重複合信号を出力する音声検波回路と
、 この音声検波回路の前記音声検波用同調回路の
両端に複数のダンピング抵抗を直列接続して成る
ダンピング手段と、 前記音声検波回路からの音声多重複合信号の振
幅の大小を検出する検出手段と、 この検出手段の検出出力の大小に応じて前記ダ
ンピング手段のダンピング抵抗値を切り換えるス
イツチング手段であつて、前記音声検波回路から
の音声多重複合信号の振幅を常に標準値に抑える
ようダンピング抵抗値を制御するスイツチング手
段とを具備したことを特徴とする音声多重用テレ
ビジヨン受像機。[Scope of Claim for Utility Model Registration] An audio detection circuit that has a tuning circuit for audio detection and performs FM detection on an audio intermediate frequency signal extracted from a video intermediate frequency amplification circuit and outputs an audio multiplexed composite signal; and this audio detection circuit. damping means comprising a plurality of damping resistors connected in series to both ends of the audio detection tuning circuit; a detection means for detecting the magnitude of the amplitude of the audio multiplexed composite signal from the audio detection circuit; and detection of the detection means. Switching means for switching the damping resistance value of the damping means according to the magnitude of the output, the switching means for controlling the damping resistance value so that the amplitude of the audio multiplexed composite signal from the audio detection circuit is always suppressed to a standard value. A television receiver for audio multiplexing, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14128986U JPS6347678U (en) | 1986-09-17 | 1986-09-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14128986U JPS6347678U (en) | 1986-09-17 | 1986-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6347678U true JPS6347678U (en) | 1988-03-31 |
Family
ID=31048929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14128986U Pending JPS6347678U (en) | 1986-09-17 | 1986-09-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6347678U (en) |
-
1986
- 1986-09-17 JP JP14128986U patent/JPS6347678U/ja active Pending