JPS609061U - Video tape recorder playback audio signal processing circuit - Google Patents
Video tape recorder playback audio signal processing circuitInfo
- Publication number
- JPS609061U JPS609061U JP9866283U JP9866283U JPS609061U JP S609061 U JPS609061 U JP S609061U JP 9866283 U JP9866283 U JP 9866283U JP 9866283 U JP9866283 U JP 9866283U JP S609061 U JPS609061 U JP S609061U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- tape recorder
- video tape
- processing circuit
- signal processing
- 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
- 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図は本考案の一実施例になるビデオテープレコーダ
の再生音声信号処理回路のブロック図、第２図は本考案
の一実施例を説明んる為の波形図、第３図は第１図の一
部を具体的に表わした具体的回路図を夫々示す。
７・・・・・・帯域フィルタ（Ｂ、Ｐ−Ｆ）、８・・・
・・・ドロップアウト検出器、９・・・・・・ＦＭ復調
器、１０・・・・・・保持回路、１１・・・・・・切替
回路、１３．１５・・・・・・インバータ、１４・・・
・・・ＮＡＮＤゲート、１６．１７・・・・・・アナロ
グスイッチ、１８・・・・・・遅延回路。FIG. 1 is a block diagram of a reproduced audio signal processing circuit of a video tape recorder which is an embodiment of the present invention, FIG. 2 is a waveform diagram for explaining an embodiment of the present invention, and FIG. A specific circuit diagram specifically representing a part of the figure is shown. 7...Band filter (B, P-F), 8...
...Dropout detector, 9...FM demodulator, 10...Holding circuit, 11...Switching circuit, 13.15...Inverter, 14...
...NAND gate, 16.17...analog switch, 18...delay circuit.
Claims (1)
回転ヘッドにより記録再生を行うビデオテープレコーダ
において、該回転ヘッドにより再生された再生エンベロ
ープ信号のドロップアウトを検出する検出器と、復調さ
れた音声信号のレベルを保持する保持回路と、該ドロッ
プアウト検出器の出力により該復調された音声信号と該
保持回路の出力信号とを切替えて出力する様にした切替
回路とからなるビデオテープレコーダの再生音声信号処
理回路。A video tape recorder that frequency-division multiplexes a modulated audio signal and a video signal and performs recording and reproduction using a rotary head includes a detector for detecting dropouts in a reproduced envelope signal reproduced by the rotary head, and a detector for detecting dropouts in a reproduced envelope signal reproduced by the rotary head; A video tape recorder comprising a holding circuit that holds the level of an audio signal, and a switching circuit that switches and outputs the demodulated audio signal and the output signal of the holding circuit according to the output of the dropout detector. Playback audio signal processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9866283U JPS609061U (en) | 1983-06-24 | 1983-06-24 | Video tape recorder playback audio signal processing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9866283U JPS609061U (en) | 1983-06-24 | 1983-06-24 | Video tape recorder playback audio signal processing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS609061U true JPS609061U (en) | 1985-01-22 |
Family
ID=30234147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9866283U Pending JPS609061U (en) | 1983-06-24 | 1983-06-24 | Video tape recorder playback audio signal processing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS609061U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740713A (en) * | 1980-08-25 | 1982-03-06 | Hitachi Ltd | Audio signal reproducing device equipped with noise eliminating circuit |
-
1983
- 1983-06-24 JP JP9866283U patent/JPS609061U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5740713A (en) * | 1980-08-25 | 1982-03-06 | Hitachi Ltd | Audio signal reproducing device equipped with noise eliminating circuit |
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