JPH0182581U - - Google Patents
Info
- Publication number
- JPH0182581U JPH0182581U JP1987177666U JP17766687U JPH0182581U JP H0182581 U JPH0182581 U JP H0182581U JP 1987177666 U JP1987177666 U JP 1987177666U JP 17766687 U JP17766687 U JP 17766687U JP H0182581 U JPH0182581 U JP H0182581U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- luminance
- amplitude
- low frequency
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の第１実施例を示す記録回路ブ
ロツク図、第２図は第２実施例を示す記録回路ブ
ロツク図、第３図はＦＭ輝度信号の周波数と再生
低域変換カラー信号レベルの関係を示す特性説明
図をそれぞれ顕わす。
６…第１輝度振幅検出回路、９…第２輝度振幅
検出回路、４…利得制御アンプ。
Fig. 1 is a recording circuit block diagram showing the first embodiment of the present invention, Fig. 2 is a recording circuit block diagram showing the second embodiment, and Fig. 3 shows the frequency of the FM luminance signal and the reproduced low frequency conversion color signal level. Characteristic explanatory diagrams showing the relationships between the two are shown. 6...First luminance amplitude detection circuit, 9...Second luminance amplitude detection circuit, 4...Gain control amplifier.
Claims (1)
カラー信号を磁気記録するビデオテープレコーダ
において、 前記ＦＭ輝度信号の振幅変動に対応する制御信
号を形成導出する輝度振幅検出回路と、 前記制御信号に基づいて前記低域変換カラー信
号のレベルを前記ＦＭ輝度信号の振幅に合わせて
制御する利得制御アンプとを、 それぞれ配して成るカラー信号記録レベル制御
回路。[Claims for Utility Model Registration] A video tape recorder that magnetically records a low frequency converted color signal using an FM luminance signal as a high frequency bias, comprising: a luminance amplitude detection circuit for forming and deriving a control signal corresponding to amplitude fluctuations of the FM luminance signal; and a gain control amplifier that controls the level of the low frequency conversion color signal in accordance with the amplitude of the FM luminance signal based on the control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987177666U JPH0182581U (en) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987177666U JPH0182581U (en) | 1987-11-20 | 1987-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0182581U true JPH0182581U (en) | 1989-06-01 |
Family
ID=31469323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987177666U Pending JPH0182581U (en) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0182581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013095027A (en) * | 2011-10-31 | 2013-05-20 | Epokku Chemical:Kk | Writing utensil |
-
1987
- 1987-11-20 JP JP1987177666U patent/JPH0182581U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013095027A (en) * | 2011-10-31 | 2013-05-20 | Epokku Chemical:Kk | Writing utensil |
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