JPH0268580U - - Google Patents
Info
- Publication number
- JPH0268580U JPH0268580U JP14805188U JP14805188U JPH0268580U JP H0268580 U JPH0268580 U JP H0268580U JP 14805188 U JP14805188 U JP 14805188U JP 14805188 U JP14805188 U JP 14805188U JP H0268580 U JPH0268580 U JP H0268580U
- Authority
- JP
- Japan
- Prior art keywords
- reproduced
- luminance signal
- noise level
- level detection
- detection means
- 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 7
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Television Signal Processing For Recording (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図は本考案の画質調整装置を搭載したＶＴ
Ｒの一実施例を示したブロツク図、第２図は従来
の画質調整装置の一例を示したブロツク図である
。
１……可変抵抗器、２……画質調整回路、１１
……エンベロープレベル検出回路、１２……高域
通過フイルタ、１３……ノイズレベル検出回路、
１４……画質調整制御回路。
Figure 1 shows a VT equipped with the image quality adjustment device of this invention.
FIG. 2 is a block diagram showing an example of a conventional image quality adjusting device. 1... Variable resistor, 2... Image quality adjustment circuit, 11
... Envelope level detection circuit, 12 ... High pass filter, 13 ... Noise level detection circuit,
14... Image quality adjustment control circuit.
Claims (1)
抽出された変調輝度信号を復調して得た再生輝度
信号の周波数特性を変化させる画質調整装置にお
いて、前記再生変調信号のエンベロープレベルを
検出するエンベロープレベル検出手段と、前記再
生輝度信号のノイズレベルを検出するノイズレベ
ル検出手段と、これらエンベロープレベル検出手
段とノイズレベル検出手段とから入力される前記
エンベロープレベルと前記ノイズレベルの検出情
報に基づいて、前記再生輝度信号の周波数特性を
変化させる周波数特性制御手段とを具備したこと
を特徴とする画質調整装置。 In an image quality adjustment device that changes the frequency characteristics of a reproduced luminance signal obtained by demodulating a modulated luminance signal extracted from a reproduced modulated signal reproduced by a video head, envelope level detection detects the envelope level of the reproduced modulated signal. a noise level detection means for detecting the noise level of the reproduced luminance signal, and detection information of the envelope level and the noise level inputted from the envelope level detection means and the noise level detection means. An image quality adjustment device comprising: frequency characteristic control means for changing frequency characteristics of a luminance signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14805188U JPH0268580U (en) | 1988-11-15 | 1988-11-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14805188U JPH0268580U (en) | 1988-11-15 | 1988-11-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0268580U true JPH0268580U (en) | 1990-05-24 |
Family
ID=31419015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14805188U Pending JPH0268580U (en) | 1988-11-15 | 1988-11-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0268580U (en) |
-
1988
- 1988-11-15 JP JP14805188U patent/JPH0268580U/ja active Pending
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