JPS644494U - - Google Patents
Info
- Publication number
- JPS644494U JPS644494U JP9803787U JP9803787U JPS644494U JP S644494 U JPS644494 U JP S644494U JP 9803787 U JP9803787 U JP 9803787U JP 9803787 U JP9803787 U JP 9803787U JP S644494 U JPS644494 U JP S644494U
- Authority
- JP
- Japan
- Prior art keywords
- segment signal
- drive circuit
- signal
- display
- segment
- 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 description 4
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図は本考案第一実施例に係る表示器の駆動
回路を示す機能ブロツク図、第２図は同じくフロ
ーチヤート、第３図ａは従来の表示器の駆動回路
によるグリツド信号の出力波形を示す波形図、第
３図ｂは本考案第一実施例に係る表示器の駆動回
路によるグリツド信号の出力波形を示す波形図、
第４図は本考案第一実施例に係る表示器の駆動回
路を示す電気回路図、第５図は同じく蛍光表示管
の文字パターンを示す正面図、第６図は同じく蛍
光表示管の表示例を示す正面図、第７図は本考案
第二実施例におけるフローチヤート、第８図は同
じくグリツド信号の出力波形を示す波形図、第９
図は同じく表示器の駆動回路の機能ブロツク図、
第１０図は従来のフローチヤートである。
１：表示器（蛍光表示管）、１ａ：アノード端
子、１ｂ：グリツド端子、２：駆動回路、３：セ
グメント信号出力手段、４：セグメント信号検知
手段、５：デジツト信号出力手段、６：記憶手段
、７：入力手段、８：マイクロコンピユータ、Ｇ
１：第一グリツド、Ｇ２：第二グリツド、Ｇ３：
第三グリツド、Ｇ４：第四グリツド。
FIG. 1 is a functional block diagram showing a display drive circuit according to the first embodiment of the present invention, FIG. 2 is a flowchart, and FIG. 3a shows the output waveform of a grid signal from a conventional display drive circuit. FIG. 3b is a waveform diagram showing the output waveform of the grid signal by the display drive circuit according to the first embodiment of the present invention;
Fig. 4 is an electric circuit diagram showing the drive circuit of the display according to the first embodiment of the present invention, Fig. 5 is a front view showing the character pattern of the fluorescent display tube, and Fig. 6 is a display example of the fluorescent display tube. FIG. 7 is a flow chart of the second embodiment of the present invention, FIG. 8 is a waveform diagram showing the output waveform of the grid signal, and FIG.
The figure is also a functional block diagram of the display drive circuit.
FIG. 10 is a conventional flowchart. 1: Display device (fluorescent display tube), 1a: anode terminal, 1b: grid terminal, 2: drive circuit, 3: segment signal output means, 4: segment signal detection means, 5: digital signal output means, 6: storage means , 7: Input means, 8: Microcomputer, G
1: First grid, G2: Second grid, G3:
Third Grid, G4: Fourth Grid.
Claims (1)
る表示器を駆動するための駆動回路において、前
記セグメント信号を前記表示器に出力するセグメ
ント信号出力手段と、前記セグメント信号の有無
を検知するセグメント信号検知手段と、該セグメ
ント信号検知手段の検知結果により前記デジツト
信号を前記表示器に出力制御または停止制御する
デジツト信号出力手段とを有することを特徴とす
る表示器の駆動回路。 A drive circuit for driving a display device that lights up using a segment signal and a digital signal, comprising: segment signal output means for outputting the segment signal to the display device; segment signal detection means for detecting the presence or absence of the segment signal; A display drive circuit comprising: digital signal output means for controlling output or stop of the digital signal to the display according to the detection result of the segment signal detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9803787U JPS644494U (en) | 1987-06-25 | 1987-06-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9803787U JPS644494U (en) | 1987-06-25 | 1987-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS644494U true JPS644494U (en) | 1989-01-11 |
Family
ID=31323945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9803787U Pending JPS644494U (en) | 1987-06-25 | 1987-06-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644494U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156426A (en) * | 1978-05-30 | 1979-12-10 | Omron Tateisi Electronics Co | Drive circuit for segment display |
-
1987
- 1987-06-25 JP JP9803787U patent/JPS644494U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156426A (en) * | 1978-05-30 | 1979-12-10 | Omron Tateisi Electronics Co | Drive circuit for segment display |
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