JPH036683U - - Google Patents
Info
- Publication number
- JPH036683U JPH036683U JP6721489U JP6721489U JPH036683U JP H036683 U JPH036683 U JP H036683U JP 6721489 U JP6721489 U JP 6721489U JP 6721489 U JP6721489 U JP 6721489U JP H036683 U JPH036683 U JP H036683U
- Authority
- JP
- Japan
- Prior art keywords
- crt
- constant current
- circuit
- supplies
- current 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Liquid Crystal Display Device Control (AREA)
Description
第１図は本考案の電子機器の構成を示すブロツ
ク図、第２図は電子機器の従来例を示すブロツク
図である。
１……制御回路、２……キーボード、３……表
示制御回路、４……ＬＣＤ、５……ＣＲＴ、６…
…ＤＡコンバータ回路、７……定電流回路、８…
…スイツチングトランジスタ。
FIG. 1 is a block diagram showing the configuration of an electronic device according to the present invention, and FIG. 2 is a block diagram showing a conventional example of the electronic device. 1... Control circuit, 2... Keyboard, 3... Display control circuit, 4... LCD, 5... CRT, 6...
...DA converter circuit, 7...constant current circuit, 8...
...switching transistor.
Claims (1)
部接続されるＣＲＴにより適宜切換えて表示を行
なう電子機器に於いて、ＣＲＴの接続を指示する
手段と、デイジタルＲＧＢ信号をアナログＲＧＢ
信号に変換しＣＲＴに供給するＤＡコンバータ回
路と、ＤＡコンバータ回路に定電流を供給する定
電流回路と、定電流回路の動作を制御するスイツ
チング回路と、前記指示手段の指示に基づき前記
スイツチング回路を制御する制御手段で構成し、
ＣＲＴが接続された時定電流回路を動作状態に設
定することを特徴とした電子機器。 In electronic equipment that displays by appropriately switching between a display device such as a liquid crystal display provided on the main body and a CRT connected externally, there is a means for instructing the connection of the CRT, and a means for converting digital RGB signals into analog RGB signals.
a DA converter circuit that converts the signal into a signal and supplies it to a CRT; a constant current circuit that supplies a constant current to the DA converter circuit; a switching circuit that controls the operation of the constant current circuit; Consisting of control means to control,
An electronic device characterized by setting a time constant current circuit connected to a CRT to an operating state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6721489U JPH0641272Y2 (en) | 1989-06-08 | 1989-06-08 | Electronics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6721489U JPH0641272Y2 (en) | 1989-06-08 | 1989-06-08 | Electronics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH036683U true JPH036683U (en) | 1991-01-23 |
| JPH0641272Y2 JPH0641272Y2 (en) | 1994-10-26 |
Family
ID=31600592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6721489U Expired - Lifetime JPH0641272Y2 (en) | 1989-06-08 | 1989-06-08 | Electronics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641272Y2 (en) |
-
1989
- 1989-06-08 JP JP6721489U patent/JPH0641272Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641272Y2 (en) | 1994-10-26 |