JPS59108377U - Audio/video detection circuit - Google Patents
Audio/video detection circuitInfo
- Publication number
- JPS59108377U JPS59108377U JP173283U JP173283U JPS59108377U JP S59108377 U JPS59108377 U JP S59108377U JP 173283 U JP173283 U JP 173283U JP 173283 U JP173283 U JP 173283U JP S59108377 U JPS59108377 U JP S59108377U
- Authority
- JP
- Japan
- Prior art keywords
- audio
- video
- signal
- detection
- carrier
- 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 Receiver Circuits (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図は従来例を示すブロック図、及び第２図は本考案
の一実施例を示すブロック図である。
１１・・・・・・フロントエンド、１２・・・・・・映
像中間周波フィルタ、１４・・・・・・音声第１検波回
路、１５・・・・・・映像検波用フィルタ、１６・・・
・・・映像検波回路、１８・・・・・・周波数検波回路
。FIG. 1 is a block diagram showing a conventional example, and FIG. 2 is a block diagram showing an embodiment of the present invention. 11...Front end, 12...Video intermediate frequency filter, 14...Audio first detection circuit, 15...Video detection filter, 16...・
...Video detection circuit, 18...Frequency detection circuit.
Claims (1)
出力に得られる中間周波信号中の映像キャリアのキャリ
アポイントで平坦であり、同信号中の音声キャリアのキ
ャリアポイントをインターキャリア検波に適するレベル
まで落す周波数特性を有するフィルタと、該フィルタの
出力信号中の映像キャリアと音声キャリアとに基づきイ
ンターキャリア検波を行い音声中間周波信号を得、該音
声中間周波信号をＦＭ検波して音声信号を得る音声検波
手段と、前記フィルタの出力信号を残留側波帯検波に必
要な特性を有する信号にした後、映像検波して映像信号
を得る映像検波手段とを備える音声・映像検波回路。In a TV video intermediate frequency amplification circuit, a frequency characteristic that is flat at the carrier point of the video carrier in the intermediate frequency signal obtained at the output of the front end and reduces the carrier point of the audio carrier in the same signal to a level suitable for intercarrier detection. and an audio detection means for performing intercarrier detection to obtain an audio intermediate frequency signal based on a video carrier and an audio carrier in an output signal of the filter, and performing FM detection on the audio intermediate frequency signal to obtain an audio signal. and video detection means for converting the output signal of the filter into a signal having characteristics necessary for residual sideband detection and then performing video detection to obtain a video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP173283U JPS59108377U (en) | 1983-01-12 | 1983-01-12 | Audio/video detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP173283U JPS59108377U (en) | 1983-01-12 | 1983-01-12 | Audio/video detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59108377U true JPS59108377U (en) | 1984-07-21 |
Family
ID=30133442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP173283U Pending JPS59108377U (en) | 1983-01-12 | 1983-01-12 | Audio/video detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59108377U (en) |
-
1983
- 1983-01-12 JP JP173283U patent/JPS59108377U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59144972U (en) | television receiver | |
| JPS59108377U (en) | Audio/video detection circuit | |
| JPS5933374U (en) | television receiver | |
| JPS5883874U (en) | television receiver | |
| JPS5981169U (en) | Video signal reproducing device | |
| JPS586480U (en) | Television signal processing equipment | |
| JPS63181153U (en) | ||
| JPS60150661U (en) | video tape recorder | |
| JPS59185712U (en) | Audio signal processing circuit | |
| JPS6064676U (en) | Audio carrier frequency discrimination circuit in television receiver for multi-system reception | |
| JPS60144367U (en) | satellite broadcast receiver | |
| JPS5961671U (en) | Ghost removal circuit for television receivers | |
| JPS5854176U (en) | television receiver | |
| JPS5976170U (en) | TV tuner audio information processing circuit | |
| JPS5948591U (en) | Video output circuit of CRT display device | |
| JPS601086U (en) | Contour correction circuit | |
| JPS619966U (en) | Ceramic disk discriminator circuit for audio demodulation | |
| JPS5866771U (en) | Audio detection circuit | |
| JPS6011570U (en) | CATV system decoding circuit | |
| JPS60186775U (en) | Video signal amplification circuit | |
| JPS6055162U (en) | television set | |
| JPS597500U (en) | audio processing circuit | |
| JPS59129268U (en) | Video signal white compression circuit | |
| JPS59152873U (en) | Audio signal processing circuit for television broadcast signals | |
| JPS588270U (en) | Intermediate frequency filter circuit for television audio signals |