JPS5925876U - Video tape recorder recording/playback circuit - Google Patents
Video tape recorder recording/playback circuitInfo
- Publication number
- JPS5925876U JPS5925876U JP12153882U JP12153882U JPS5925876U JP S5925876 U JPS5925876 U JP S5925876U JP 12153882 U JP12153882 U JP 12153882U JP 12153882 U JP12153882 U JP 12153882U JP S5925876 U JPS5925876 U JP S5925876U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- video tape
- tape recorder
- trap
- luminance 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
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図は従来技術の記録回路図、第２図はその再生回路
図、第３図は本考案の実施例の記録回路図、第４図は輝
度信号と搬送色倍電の周波数分布図、第５図はその再生
回路図、第６図は再生映像信号の周波数分布図、第７図
は可変トラップ回路の具体的構成図である。 −
２・・・・・・輝度信号記録処理回路、３・・・・・・
搬送色信号再生処理回路１．４・・・・・・混合回路、
８・・・・・・輝度信号再生処理回路、９・・・・・・
搬送色信号再生処理回路、１０・・・・・・混合回路、
１２．１３・・・・・・色レベル検出回路、２Ｃ，８Ａ
・・・・・・可変トラップ回路。FIG. 1 is a recording circuit diagram of the prior art, FIG. 2 is a reproduction circuit diagram thereof, FIG. 3 is a recording circuit diagram of an embodiment of the present invention, and FIG. 4 is a frequency distribution diagram of a luminance signal and a carrier color doubler. FIG. 5 is a reproduction circuit diagram thereof, FIG. 6 is a frequency distribution diagram of a reproduced video signal, and FIG. 7 is a specific configuration diagram of the variable trap circuit. - 2... Luminance signal recording processing circuit, 3...
Carrier color signal reproduction processing circuit 1.4...Mixing circuit,
8... Luminance signal regeneration processing circuit, 9...
Carrier color signal reproduction processing circuit, 10...mixing circuit,
12.13...Color level detection circuit, 2C, 8A
・・・・・・Variable trap circuit.
Claims (1)
ぞれ輝度信号の低域成分を削除する第１可変トラップ回
路と搬送色信号によるビート妨害を防止する第２可変ト
ラップ回路とを設け、前記両可変トラップ回路には搬送
色信号のレベルを検出する色レベル検出回路を接続し、
前記両可変トラップ回路のトラップ量を色レベル検出回
路からの検出出力に応答して変化させるように構成した
ことを特徴とするビデオテープレコーダの記録・再生回
路。The luminance signal recording processing circuit and the luminance signal reproduction processing circuit are each provided with a first variable trap circuit for deleting the low-frequency component of the luminance signal and a second variable trap circuit for preventing beat interference by the carrier color signal, A color level detection circuit that detects the level of the carrier color signal is connected to the trap circuit.
A recording/reproducing circuit for a video tape recorder, characterized in that the trap amount of both of the variable trap circuits is changed in response to a detection output from a color level detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12153882U JPS5925876U (en) | 1982-08-10 | 1982-08-10 | Video tape recorder recording/playback circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12153882U JPS5925876U (en) | 1982-08-10 | 1982-08-10 | Video tape recorder recording/playback circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5925876U true JPS5925876U (en) | 1984-02-17 |
Family
ID=30278131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12153882U Pending JPS5925876U (en) | 1982-08-10 | 1982-08-10 | Video tape recorder recording/playback circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5925876U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173991A (en) * | 1987-12-26 | 1989-07-10 | Sharp Corp | Video signal recording circuit |
| JPH02205194A (en) * | 1989-02-02 | 1990-08-15 | Mitsubishi Electric Corp | Video signal processing circuit |
-
1982
- 1982-08-10 JP JP12153882U patent/JPS5925876U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173991A (en) * | 1987-12-26 | 1989-07-10 | Sharp Corp | Video signal recording circuit |
| JPH02205194A (en) * | 1989-02-02 | 1990-08-15 | Mitsubishi Electric Corp | Video signal processing circuit |
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