JPH03112793U - - Google Patents
Info
- Publication number
- JPH03112793U JPH03112793U JP2203290U JP2203290U JPH03112793U JP H03112793 U JPH03112793 U JP H03112793U JP 2203290 U JP2203290 U JP 2203290U JP 2203290 U JP2203290 U JP 2203290U JP H03112793 U JPH03112793 U JP H03112793U
- Authority
- JP
- Japan
- Prior art keywords
- display
- signal
- circuit
- waveform
- dimming
- 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
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図はこの考案の一実施例による表示器調光
回路を示す回路図、第２図は第１図の各部の出力
波形を示す波形図、第３図は従来の表示器調光回
路を示す回路図、第４図は第３図の各部の出力波
形を示す波形図である。
１……調光回路、２……積分回路、３……パル
ス発生回路、５……ノコギリ波発生回路、６……
比較器、７……表示制御回路、８……表示器、１
０……微分回路。なお、図中、同一符号は同一、
又は相当部分を示す。
Fig. 1 is a circuit diagram showing a display dimming circuit according to an embodiment of this invention, Fig. 2 is a waveform diagram showing output waveforms of each part of Fig. 1, and Fig. 3 is a circuit diagram showing a conventional display dimming circuit. The circuit diagram shown in FIG. 4 is a waveform diagram showing the output waveforms of each part in FIG. 3. 1...Dimmer circuit, 2...Integrator circuit, 3...Pulse generation circuit, 5...Sawtooth wave generation circuit, 6...
Comparator, 7...Display control circuit, 8...Display device, 1
0... Differential circuit. In addition, in the figure, the same reference numerals are the same,
or a corresponding portion.
Claims (1)
表示信号を作成する表示制御回路７からの表示信
号を表示する表示器８の調光回路において、レベ
ルが変化する調光信号を出力する調光信号発生回
路１，２と、パルス発生回路３と、該パルス発生
回路からの出力パルスを、ノコギリ波の立下り部
に、該波形の波高値よりも大きなスパイク波形を
重畳した波形に変換する波形変換器５，９と、該
波形変換器からの出力と前記調光信号発生回路１
，２からの調光信号のレベルとを比較し、波形変
換器５，９からの出力が調光信号のレベルを越え
たとき、その越えている時間出力を反転する比較
器６とを備え、該比較器からの出力のデユーテイ
に基づいて前記表示制御回路７から出力される表
示信号のデユーテイを変化せしめることを特徴と
する表示器調光回路。 In the dimming circuit of the display 8 which displays the display signal from the display control circuit 7 which inputs the signal under test and creates a display signal corresponding to the signal under test, the dimming circuit outputs the dimming signal whose level changes. The optical signal generation circuits 1 and 2, the pulse generation circuit 3, and the output pulse from the pulse generation circuit are converted into a waveform in which a spike waveform larger than the peak value of the waveform is superimposed on the falling part of the sawtooth wave. Waveform converters 5 and 9, the output from the waveform converters, and the dimming signal generation circuit 1
. A display dimming circuit characterized in that the duty of the display signal output from the display control circuit 7 is changed based on the duty of the output from the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203290U JPH03112793U (en) | 1990-03-05 | 1990-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203290U JPH03112793U (en) | 1990-03-05 | 1990-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03112793U true JPH03112793U (en) | 1991-11-18 |
Family
ID=31525058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2203290U Pending JPH03112793U (en) | 1990-03-05 | 1990-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03112793U (en) |
-
1990
- 1990-03-05 JP JP2203290U patent/JPH03112793U/ja active Pending
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