JPH02123995U

JPH02123995U -

Info

Publication number: JPH02123995U
Application number: JP3257489U
Authority: JP
Priority date: 1989-03-24
Filing date: 1989-03-24
Publication date: 1990-10-12

Description

[Brief explanation of drawings]

第１図はこの考案に係る蛍光表示管駆動回路の
一実施例を示すブロツク図、第２図は第１図の動
作を説明するフローチヤート、第３図は第１図の
蛍光表示管の表示パターンを示す構成図、第４図
はこの考案の他の実施例を示す構成図、第５図は
従来の蛍光表示管駆動回路の一例を示すブロツク
図、第６図は第５図の蛍光表示管の表示パターン
を示す構成図である。１……コンピユータ回路、３……蛍光表示管、
５……セグメント制御用ドライバ、６……グリツ
ド制御用ドライバ、Ｓ１１〜Ｓ１７，Ｓ２１〜Ｓ
２７，Ｓ３１〜Ｓ３７……セグメント電極、Ｇ１
，Ｇ２，Ｇ３……グリツド電極。 FIG. 1 is a block diagram showing an embodiment of the fluorescent display tube drive circuit according to this invention, FIG. 2 is a flowchart explaining the operation of FIG. 1, and FIG. 3 is a display of the fluorescent display tube of FIG. 1. FIG. 4 is a block diagram showing another embodiment of this invention. FIG. 5 is a block diagram showing an example of a conventional fluorescent display tube drive circuit. FIG. 6 is a block diagram showing the fluorescent display of FIG. 5. It is a block diagram which shows the display pattern of a tube. 1... Computer circuit, 3... Fluorescent display tube,
5... Segment control driver, 6... Grid control driver, S11 to S17, S21 to S
27, S31-S37...Segment electrode, G1
, G2, G3...Grid electrodes.

Claims

[Scope of utility model registration request]

Multiple sets of segment electrodes S11 to S17, S2
1 to S27, S31 to S37, and a plurality of grid electrodes provided in pairs with the segment electrodes. The segment electrodes S11 to S17, S21 to S
27, create a segment signal to be supplied to S31 to S37, and create a grid selection signal to select a predetermined grid electrode G1, G2, G3 paired with the segment electrode to which this segment signal is supplied; A fluorescent display tube drive circuit comprising signal processing circuits 1, 5, and 6 that do not generate the grid selection signal when the segment signal is a blanking display.