JPS6286738U - - Google Patents
Info
- Publication number
- JPS6286738U JPS6286738U JP17940285U JP17940285U JPS6286738U JP S6286738 U JPS6286738 U JP S6286738U JP 17940285 U JP17940285 U JP 17940285U JP 17940285 U JP17940285 U JP 17940285U JP S6286738 U JPS6286738 U JP S6286738U
- Authority
- JP
- Japan
- Prior art keywords
- pulse signal
- pulse
- light emitting
- emitting element
- light
- 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 description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Description
第１図は本願考案に係る発光素子駆動装置の一
実施例を示す電気回路図、第２図乃至第５図は第
１図の電気回路図における各部波形のタイミング
チヤート、第６図は同上装置の他の実施例を示す
電気回路図、第７図は第６図の電気回路図におけ
る各部波形のタイミングチヤート、第８図は一般
的な光方式タツチパネルを示す図である。
１１′……パルス信号発生回路、１２……単安
定マルチバイブレータ、１３……アンド回路、Ｌ
４……スイツチングトランジスタ、１７……発光
ダイオード。
FIG. 1 is an electric circuit diagram showing an embodiment of the light emitting element driving device according to the present invention, FIGS. 2 to 5 are timing charts of waveforms of various parts in the electric circuit diagram of FIG. 1, and FIG. 6 is the same device as above. FIG. 7 is a timing chart of various waveforms in the electrical circuit diagram of FIG. 6, and FIG. 8 is a diagram showing a general optical touch panel. 11'... Pulse signal generation circuit, 12... Monostable multivibrator, 13... AND circuit, L
4... Switching transistor, 17... Light emitting diode.
Claims (1)
記発光素子をパルス信号発生回路からのパルス信
号でパルス駆動することで上記受光素子に光ビー
ムを入力さもるものにおいて、 第１のパルス信号及び第２のパルス信号を発生
するパルス信号発生回路と、 上記第２のパルス信号をトリガパルスとして入
力する一発パルス発生回路と、 上記一発パルス発生回路の出力信号と上記第１
のパルス信号を入力し両信号が共にハイレベルの
ときパルス信号を発生するゲート回路と、 上記ゲート回路からのパルス信号によつてオン
し上記パルス信号のパルス幅の間、電源電圧を上
記発光素子に供給して斯る発光素子を点灯させる
スイツチング素子から成ることを特徴とする発光
素子駆動装置。[Claims for Utility Model Registration] A light beam is input to the light receiving element by arranging a light emitting element and a light receiving element facing each other and pulse driving the light emitting element with a pulse signal from a pulse signal generating circuit. , a pulse signal generation circuit that generates a first pulse signal and a second pulse signal; a one-shot pulse generation circuit that inputs the second pulse signal as a trigger pulse; and an output signal of the one-shot pulse generation circuit. and the first above
a gate circuit that inputs a pulse signal and generates a pulse signal when both signals are at high level; and a gate circuit that is turned on by the pulse signal from the gate circuit and applies the power supply voltage to the light emitting element during the pulse width of the pulse signal. A light emitting element driving device comprising a switching element that supplies light to light the light emitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17940285U JPS6286738U (en) | 1985-11-19 | 1985-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17940285U JPS6286738U (en) | 1985-11-19 | 1985-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6286738U true JPS6286738U (en) | 1987-06-03 |
Family
ID=31122430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17940285U Pending JPS6286738U (en) | 1985-11-19 | 1985-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6286738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051068A (en) * | 2008-08-20 | 2010-03-04 | Rohm Co Ltd | Load driver, lighting device, and display |
-
1985
- 1985-11-19 JP JP17940285U patent/JPS6286738U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051068A (en) * | 2008-08-20 | 2010-03-04 | Rohm Co Ltd | Load driver, lighting device, and display |
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