JPS58114671U - Audio beat reduction circuit - Google Patents
Audio beat reduction circuitInfo
- Publication number
- JPS58114671U JPS58114671U JP941682U JP941682U JPS58114671U JP S58114671 U JPS58114671 U JP S58114671U JP 941682 U JP941682 U JP 941682U JP 941682 U JP941682 U JP 941682U JP S58114671 U JPS58114671 U JP S58114671U
- Authority
- JP
- Japan
- Prior art keywords
- audio
- video
- circuit
- bandpass filter
- detects
- 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
- Picture Signal Circuits (AREA)
- Television Signal Processing For Recording (AREA)
- Optical Recording Or Reproduction (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図はビデオ・ディスク再生装置の検出針に発生する
ビート成分を含んだ映像キャリア成分を説明する周波数
スペクトル図、第２図は従来の音声ビート軽減回路を説
明するビテ゛オ・ディスク再生装置のブロック図、第３
図は本考案に係る音声ビート軽減回路を示すビデオ・デ
ィスク再生装置のブロック図、第４図は映像検波出力中
の映像及び音声信号の周波数スペクトルを示す図である
。−４・・・非直線回路、５・・・７１６ＫＨ，帯域フ
ィルタ、−（第１の帯域フィルタ）、６・・・２〜９Ｍ
Ｈ２帯域フィルタ、１０・・・映像信号復調回路、ｉ”
ｉ ｓ、＝・低域フィルタ、１３・・・同期検波回路
、１４・・・７１６ＫＨ２帯域フイルタ（第２の帯域フ
ィルタ）、１５・・・積分 ゛回路、１６・・べ
し形フィルタ。−Fig. 1 is a frequency spectrum diagram illustrating a video carrier component containing a beat component generated at the detection needle of a video disc playback device, and Fig. 2 is a block diagram of a video disc playback device illustrating a conventional audio beat reduction circuit. Figure, 3rd
FIG. 4 is a block diagram of a video disc playback device showing an audio beat reduction circuit according to the present invention, and FIG. 4 is a diagram showing frequency spectra of video and audio signals during video detection output. -4...Non-linear circuit, 5...716KH, bandpass filter, -(first bandpass filter), 6...2-9M
H2 band filter, 10... video signal demodulation circuit, i''
i s, = Low-pass filter, 13... Synchronous detection circuit, 14... 716KH2 band filter (second band filter), 15... Integral circuit, 16... Must-shaped filter. −
Claims (1)
らの信号を夫々検波、復調する２ビデオ・ディスク再生
装置において、検出される前記音声及び映像キャリア信
号に含まれる非直線歪量をコントロール非直線回路を備
える一方、音声キャリア信号を通過する第１の帯域フィ
ルタと、映像検波信号から音声ビート成分近辺の周波数
を取り出す第２の帯域フィルタと、この第２の帯域フィ
ルタの曲名は後に設けられるくし形フィルタと、このく
し形フィルタから出力される音声ビート成分と前記第１
の帯域フィルタから出力される音声キャリア信号とを同
期検波する同期検波回路とを具備し、この同期検波回路
の出力信号に基づいて前記非直線回路をコントロールし
映像検波信号中の音声ビート成分を軽減するように構成
したことを特徴とする音声ビート軽減回路。A two-video disc playback device that detects audio and video carrier signals from a disc, detects and demodulates these signals, and includes a nonlinear circuit that controls the amount of nonlinear distortion contained in the detected audio and video carrier signals. On the other hand, there is a first bandpass filter that passes the audio carrier signal, a second bandpass filter that extracts frequencies near the audio beat component from the video detection signal, and a comb filter that will be provided later. and the audio beat component output from this comb filter and the first
and a synchronous detection circuit that synchronously detects the audio carrier signal output from the bandpass filter, and controls the non-linear circuit based on the output signal of the synchronous detection circuit to reduce the audio beat component in the video detection signal. An audio beat reduction circuit characterized in that it is configured to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP941682U JPS58114671U (en) | 1982-01-28 | 1982-01-28 | Audio beat reduction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP941682U JPS58114671U (en) | 1982-01-28 | 1982-01-28 | Audio beat reduction circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58114671U true JPS58114671U (en) | 1983-08-05 |
Family
ID=30022053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP941682U Pending JPS58114671U (en) | 1982-01-28 | 1982-01-28 | Audio beat reduction circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58114671U (en) |
-
1982
- 1982-01-28 JP JP941682U patent/JPS58114671U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58114671U (en) | Audio beat reduction circuit | |
| JPS6113364U (en) | magnetic recording and reproducing device | |
| JPS6128152U (en) | Audio FM recording system video tape recorder | |
| JPS60145745U (en) | D/A conversion circuit | |
| JPS60142566U (en) | video tape recorder | |
| JPS63181153U (en) | ||
| JPS5871282U (en) | Color signal recording/reproducing circuit | |
| JPS58147367U (en) | Video signal recording and reproducing circuit | |
| JPS617140U (en) | FM receiver | |
| JPS63181073U (en) | ||
| JPS6064676U (en) | Audio carrier frequency discrimination circuit in television receiver for multi-system reception | |
| JPS5925876U (en) | Video tape recorder recording/playback circuit | |
| JPS6026604U (en) | video disc modulator | |
| JPS59129272U (en) | television receiver | |
| JPS58163011U (en) | Dropout detection circuit | |
| JPS6014575U (en) | Audio detection circuit | |
| JPS63142972U (en) | ||
| JPS5888481U (en) | high frequency modulator | |
| JPS62198765U (en) | ||
| JPS60135790U (en) | level display device | |
| JPS60145732U (en) | Tracking type bandpass filter circuit | |
| JPS58176463U (en) | RF modulator | |
| JPS59108377U (en) | Audio/video detection circuit | |
| JPS5866771U (en) | Audio detection circuit | |
| JPS63133774U (en) |