JPH02111118U - - Google Patents
Info
- Publication number
- JPH02111118U JPH02111118U JP384290U JP384290U JPH02111118U JP H02111118 U JPH02111118 U JP H02111118U JP 384290 U JP384290 U JP 384290U JP 384290 U JP384290 U JP 384290U JP H02111118 U JPH02111118 U JP H02111118U
- Authority
- JP
- Japan
- Prior art keywords
- display device
- contrast
- detects
- light intensity
- detection section
- 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 3
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Liquid Crystal Display Device Control (AREA)
Description
第１図は本考案のコントラスト調節装置のブロ
ツク図、第２図は本考案のコントラスト調節装置
の一つの実施回路図である。
１０：輝度感知部、２０：温度感知部、３０：
演算部、４０：増幅部、５０：駆動回路、Ｑ１，
Ｑ２：トランジスタ、ＣｄＳ：光センサー、ＴＨ
：熱センサー、Ｒ，Ｒ１，Ｒ２：抵抗器、ＶＲ：
可変抵抗器。
FIG. 1 is a block diagram of the contrast adjustment device of the present invention, and FIG. 2 is a circuit diagram of one embodiment of the contrast adjustment device of the present invention. 10: Brightness sensing section, 20: Temperature sensing section, 30:
Arithmetic unit, 40: Amplification unit, 50: Drive circuit, Q1,
Q2: Transistor, CdS: Photosensor, TH
: Heat sensor, R, R1, R2: Resistor, VR:
variable resistor.
Claims (1)
て、表示装置の周囲光度を検知する光度検知部お
よび温度を検知する温度検知部と、上記検知手段
からの信号を演算してこれを表示装置のコントラ
ストレベル信号として出力する演算部を備えてい
ることを特徴とする表示装置のコントラスト調節
装置。 A device for adjusting the contrast of a display device includes a light intensity detection section that detects the ambient light intensity of the display device, a temperature detection section that detects the temperature, and a signal from the detection means that is calculated and used as a contrast level signal of the display device. 1. A contrast adjustment device for a display device, comprising an arithmetic unit that outputs an output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP384290U JPH02111118U (en) | 1990-01-18 | 1990-01-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP384290U JPH02111118U (en) | 1990-01-18 | 1990-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02111118U true JPH02111118U (en) | 1990-09-05 |
Family
ID=31205834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP384290U Pending JPH02111118U (en) | 1990-01-18 | 1990-01-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02111118U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7737963B2 (en) | 2001-09-27 | 2010-06-15 | Samsung Electronics Co., Ltd. | Liquid crystal display having gray voltages with varying magnitudes and driving method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536844A (en) * | 1978-09-07 | 1980-03-14 | Suwa Seikosha Kk | Liquid crystal driving circuit for indicating gradation |
| JPS61175688A (en) * | 1985-01-30 | 1986-08-07 | 日本精機株式会社 | Liquid crystal display unit |
-
1990
- 1990-01-18 JP JP384290U patent/JPH02111118U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5536844A (en) * | 1978-09-07 | 1980-03-14 | Suwa Seikosha Kk | Liquid crystal driving circuit for indicating gradation |
| JPS61175688A (en) * | 1985-01-30 | 1986-08-07 | 日本精機株式会社 | Liquid crystal display unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7737963B2 (en) | 2001-09-27 | 2010-06-15 | Samsung Electronics Co., Ltd. | Liquid crystal display having gray voltages with varying magnitudes and driving method thereof |