JPH0195857U - - Google Patents
Info
- Publication number
- JPH0195857U JPH0195857U JP19216087U JP19216087U JPH0195857U JP H0195857 U JPH0195857 U JP H0195857U JP 19216087 U JP19216087 U JP 19216087U JP 19216087 U JP19216087 U JP 19216087U JP H0195857 U JPH0195857 U JP H0195857U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- correction coefficient
- control section
- coefficient calculation
- led chip
- 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
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第１図は本考案によるＬＥＤ装置の一実施例を
示すブロツク図、第２図ａ〜ｇは各々同実施例の
動作例を説明するためのタイミングチヤート、第
３図ａ〜ｃは各々同実施例を説明するための模式
図、第４図は従来のＬＥＤ装置の一例を示すブロ
ツク図、第５図は従来のＬＥＤ装置の他の一例を
示すブロツク図、第６図は従来のＬＥＤ装置の他
の一例を示す回路図、第７図は従来のＬＥＤ装置
の他の一例を示す回路図である。
３３……補正係数演算部（補正回路）、３５ａ
〜３５ｎ―１……第１制御部、第２制御部（第１
〜第ｎ―１ラツチ回路）、３７……ＬＥＤアレイ
（ＬＥＤアレイ回路）、４０ａ〜４０ｎ……ＬＥ
Ｄチツプ（ＬＥＤ）、４１ａ〜４１ｎ……抵抗、
４４……第１スイツチ（アナログスイツチ）、４
５……第２スイツチ（アナログスイツチ）。
Fig. 1 is a block diagram showing an embodiment of the LED device according to the present invention, Figs. 2 a to g are timing charts for explaining an example of the operation of the same embodiment, and Figs. 3 a to c are respective implementations of the same embodiment. A schematic diagram for explaining an example, FIG. 4 is a block diagram showing an example of a conventional LED device, FIG. 5 is a block diagram showing another example of a conventional LED device, and FIG. 6 is a block diagram showing an example of a conventional LED device. A circuit diagram showing another example. FIG. 7 is a circuit diagram showing another example of a conventional LED device. 33...Correction coefficient calculation section (correction circuit), 35a
~35 n -1...First control section, second control section (first
~ n-1th latch circuit), 37... LED array (LED array circuit), 40a to 40n... LE
D chip (LED), 41a to 41n...resistance,
44...First switch (analog switch), 4
5...Second switch (analog switch).
Claims (1)
ＥＤアレイを有するＬＥＤ装置において、前記各
ＬＥＤチツプの間に介挿される第１、第２スイツ
チと、白補正時に得られた各画素の値に基づいて
補正係数を算出する補正係数演算部と、この補正
係数演算部の出力に基づいて前記各第１スイツチ
を制御して対応するＬＥＤチツプのカソードを接
地したり、前記第２スイツチに接続したりする第
１制御部と、第２スイツチを制御して、対応する
ＬＥＤチツプのアノードを調整用の抵抗を介して
電源側に接続させたり、前記第１スイツチに接続
させたりする第２制御部とを備えたことを特徴と
するＬＥＤ装置。 L with multiple LED chips arranged in a straight line
In an LED device having an ED array, first and second switches inserted between each of the LED chips, and a correction coefficient calculation unit that calculates a correction coefficient based on the value of each pixel obtained during white correction; A first control section that controls each of the first switches based on the output of the correction coefficient calculation section to ground the cathode of the corresponding LED chip or connect it to the second switch, and a second switch. and a second control section that connects an anode of a corresponding LED chip to a power source via an adjustment resistor or to the first switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19216087U JPH0195857U (en) | 1987-12-17 | 1987-12-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19216087U JPH0195857U (en) | 1987-12-17 | 1987-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0195857U true JPH0195857U (en) | 1989-06-26 |
Family
ID=31483033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19216087U Pending JPH0195857U (en) | 1987-12-17 | 1987-12-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0195857U (en) |
-
1987
- 1987-12-17 JP JP19216087U patent/JPH0195857U/ja active Pending