JPH01152393U - - Google Patents
Info
- Publication number
- JPH01152393U JPH01152393U JP1988043745U JP4374588U JPH01152393U JP H01152393 U JPH01152393 U JP H01152393U JP 1988043745 U JP1988043745 U JP 1988043745U JP 4374588 U JP4374588 U JP 4374588U JP H01152393 U JPH01152393 U JP H01152393U
- Authority
- JP
- Japan
- Prior art keywords
- display
- photo sensor
- drive voltage
- brightness
- circuit
- 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 1
- 238000010586 diagram Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図はこの考案のデイスプレイの輝度調整装
置の一実施例を示す回路図、第２図は従来のデイ
スプレイの駆動回路を示す回路図である。
図中符号は１は電源回路、２はＤＣ／ＤＣコン
ダータ、３は発振回路、４はスイツチング回路、
５は比較回路、６は制御回路、Ｔはトランス、Ｓ
はフオトセンサである。
FIG. 1 is a circuit diagram showing an embodiment of the display brightness adjustment device of this invention, and FIG. 2 is a circuit diagram showing a conventional display drive circuit. In the figure, 1 is a power supply circuit, 2 is a DC/DC converter, 3 is an oscillation circuit, 4 is a switching circuit,
5 is a comparison circuit, 6 is a control circuit, T is a transformer, S
is a photo sensor.
Claims (1)
を供給する電源回路と、デイスプレイの輝度を検
出するフオトセンサと、このフオトセンサからの
検出信号から駆動電圧を制御する電圧制御回路と
を有するデイスプレイの輝度調整装置。 A display brightness adjustment device comprising a display, a power supply circuit that supplies a drive voltage to the display, a photo sensor that detects the brightness of the display, and a voltage control circuit that controls the drive voltage from a detection signal from the photo sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988043745U JPH01152393U (en) | 1988-03-31 | 1988-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988043745U JPH01152393U (en) | 1988-03-31 | 1988-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01152393U true JPH01152393U (en) | 1989-10-20 |
Family
ID=31270136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988043745U Pending JPH01152393U (en) | 1988-03-31 | 1988-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01152393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0523182U (en) * | 1991-09-10 | 1993-03-26 | リズム時計工業株式会社 | Clock lighting |
-
1988
- 1988-03-31 JP JP1988043745U patent/JPH01152393U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0523182U (en) * | 1991-09-10 | 1993-03-26 | リズム時計工業株式会社 | Clock lighting |