JPH0244787U - - Google Patents
Info
- Publication number
- JPH0244787U JPH0244787U JP12371688U JP12371688U JPH0244787U JP H0244787 U JPH0244787 U JP H0244787U JP 12371688 U JP12371688 U JP 12371688U JP 12371688 U JP12371688 U JP 12371688U JP H0244787 U JPH0244787 U JP H0244787U
- Authority
- JP
- Japan
- Prior art keywords
- display
- count value
- output
- display unit
- value generation
- 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 6
Landscapes
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図は本考案に係る第１の実施例を示す回路
図、第２図は同実施例を用いた場合のタイミング
図、第３図は本考案に係る第２の実施例を示す回
路図、第４図は同実施例を用いた場合のタイミン
グ図、第５図は本考案に係る第３の実施例を示す
回路図、第６図は同実施例を用いた場合のタイミ
ング図である。
１：階調タイミング回路、１１，１３：カウン
タ、１２：排他的論理和回路、２１：一時記憶回
路、２２：論理反転回路、３１：比較回路、３２
：論理積及び和回路。
Fig. 1 is a circuit diagram showing a first embodiment according to the present invention, Fig. 2 is a timing diagram when using the same embodiment, and Fig. 3 is a circuit diagram showing a second embodiment according to the present invention. , FIG. 4 is a timing diagram when the same embodiment is used, FIG. 5 is a circuit diagram showing a third embodiment according to the present invention, and FIG. 6 is a timing diagram when the same embodiment is used. . 1: Gradation timing circuit, 11, 13: Counter, 12: Exclusive OR circuit, 21: Temporary storage circuit, 22: Logic inversion circuit, 31: Comparison circuit, 32
: AND and sum circuit.
Claims (1)
比を変化させることにより階調表示を行う複数の
表示単位を持つ表示装置において、 前記表示単位の一表示期間の中点で左右対称と
なるアツプダウン計数値を発生する計数値発生手
段、 前記表示単位の階調を指定する階調データを一
時保持する一時保持手段、 前記計数値発生手段の出力と前記階調データの
一時保持手段の出力とを比較する比較手段とを有
し、 前記表示単位の点灯タイミイングを前記比較手
段の出力から得るように構成したことを特徴とし
た表示装置の駆動回路。 ２ 表示の単位時間あたりの点灯及び消灯の時間
比を変化させることにより階調表示を行う複数の
表示単位を持つ表示装置において、 前記表示単位の２つの連続する表示期間の中点
で左右対称となるアツプダウン計数値を発生する
計数値発生手段、 前記表示単位の階調を指定する階調データを一
表示期間ごとに一時保持する一時保持手段、 前記計数値発生手段の出力と前記階調データの
一時保持手段の出力とを比較する比較手段とを有
し、 前記表示単位の２つの連続する点灯タイミング
を前記比較手段の出力から得るように構成したこ
とを特徴とした表示装置の駆動回路。[Scope of Claim for Utility Model Registration] 1. In a display device having a plurality of display units that perform gradation display by changing the time ratio of turning on and turning off per unit time of display, within one display period of said display unit: a count value generation means for generating an up-down count value that is symmetrical at a point; a temporary holding means for temporarily holding tone data specifying the tone of the display unit; and an output of the count value generation means and the tone data A drive circuit for a display device, comprising: comparison means for comparing the output of the temporary holding means, and configured to obtain lighting timing of the display unit from the output of the comparison means. 2. In a display device having a plurality of display units that perform gradation display by changing the time ratio of turning on and off per unit time of display, the display unit is symmetrical at the midpoint of two consecutive display periods of the display unit. a count value generation means for generating an up-down count value, a temporary holding means for temporarily holding tone data specifying the tone of the display unit for each display period, and an output of the count value generation means and the tone data. A drive circuit for a display device, comprising: comparison means for comparing the output of the temporary holding means, and configured to obtain two consecutive lighting timings of the display unit from the output of the comparison means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12371688U JPH0244787U (en) | 1988-09-20 | 1988-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12371688U JPH0244787U (en) | 1988-09-20 | 1988-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244787U true JPH0244787U (en) | 1990-03-28 |
Family
ID=31372824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12371688U Pending JPH0244787U (en) | 1988-09-20 | 1988-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244787U (en) |
-
1988
- 1988-09-20 JP JP12371688U patent/JPH0244787U/ja active Pending
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