JPH01159469U - - Google Patents
Info
- Publication number
- JPH01159469U JPH01159469U JP5575688U JP5575688U JPH01159469U JP H01159469 U JPH01159469 U JP H01159469U JP 5575688 U JP5575688 U JP 5575688U JP 5575688 U JP5575688 U JP 5575688U JP H01159469 U JPH01159469 U JP H01159469U
- Authority
- JP
- Japan
- Prior art keywords
- contrast
- brightness
- adjustment signal
- frame
- frequencies
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Television Receiver Circuits (AREA)
- Details Of Television Scanning (AREA)
Description
第１図は本考案の一実施例のブロツク図、第２
図はコントラスト・輝度制御回路の具体的な一例
の回路図、第３図は従来のコントラスト調節回路
及び輝度調節回路の回路図である。
１……Ｄ／Ａコントロール回路、２……コント
ラスト・輝度制御回路、３……映像信号増幅回路
、４……映像信号入力回路、５……偏向出力及び
高圧制御回路、６……ブラウン管、１０……フレ
ーム周波数選択回路、１１……コントラスト変更
回路、１２……輝度変更回路、１４……輝度調節
回路、１６……コントラスト調節回路。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is a circuit diagram of a specific example of a contrast/brightness control circuit, and FIG. 3 is a circuit diagram of a conventional contrast adjustment circuit and brightness adjustment circuit. 1...D/A control circuit, 2...Contrast/brightness control circuit, 3...Video signal amplification circuit, 4...Video signal input circuit, 5...Deflection output and high voltage control circuit, 6...Cathode ray tube, 10 ... Frame frequency selection circuit, 11 ... Contrast change circuit, 12 ... Brightness change circuit, 14 ... Brightness adjustment circuit, 16 ... Contrast adjustment circuit.
Claims (1)
によつて設定し、コントラスト調節信号によつて
該ブラウン管のコントラストを同じく手動によつ
て設定するとともに複数のフレーム周波数を任意
に選択し得る可変走査式表示装置において、 該複数のフレーム周波数の夫々に対応して予め
設定した複数の該輝度調節信号を発生する輝度調
節信号発生手段と、 該複数のフレーム周波数の夫々に対応して予め
設定した複数のコントラスト調節信号を発生する
コントラスト調節信号発生手段と、 該複数のフレーム周波数のいずれかが選択され
たときは該選択されたフレーム周波数を示すフレ
ーム周波数選択信号を該輝度調節信号発生手段及
び該コントラスト調節信号発生手段へ供給し、該
選択されたフレーム周波数に対応する該輝度調節
信号及び該コントラスト調節信号を発生させるフ
レーム周波数選択手段とよりなり、 該複数のフレーム周波数を切換えた場合であつ
ても該輝度及びコントラストを常に一定とした可
変走査式表示装置。[Claim for Utility Model Registration] Manually setting the brightness of a cathode ray tube using a brightness adjustment signal, manually setting the contrast of the cathode ray tube using a contrast adjustment signal, and arbitrarily setting a plurality of frame frequencies. A variable scanning display device that can be selected from a plurality of frame frequencies, comprising: a brightness adjustment signal generating means for generating a plurality of brightness adjustment signals preset corresponding to each of the plurality of frame frequencies; a contrast adjustment signal generating means for generating a plurality of contrast adjustment signals set in advance as a contrast adjustment signal; and when one of the plurality of frame frequencies is selected, a frame frequency selection signal indicating the selected frame frequency is used for the brightness adjustment frame frequency selection means that supplies the signal generation means and the contrast adjustment signal generation means to generate the brightness adjustment signal and the contrast adjustment signal corresponding to the selected frame frequency, and switches between the plurality of frame frequencies; A variable scanning display device whose brightness and contrast are always constant even when the brightness and contrast are constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5575688U JPH01159469U (en) | 1988-04-25 | 1988-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5575688U JPH01159469U (en) | 1988-04-25 | 1988-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01159469U true JPH01159469U (en) | 1989-11-06 |
Family
ID=31281658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5575688U Pending JPH01159469U (en) | 1988-04-25 | 1988-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01159469U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017191990A (en) * | 2016-04-12 | 2017-10-19 | 日本放送協会 | Contrast correction device and program |
-
1988
- 1988-04-25 JP JP5575688U patent/JPH01159469U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017191990A (en) * | 2016-04-12 | 2017-10-19 | 日本放送協会 | Contrast correction device and program |
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