EP 0635819 B1 19981125 - Driving method and apparatus for a microtip display
Title (en)
Driving method and apparatus for a microtip display
Title (de)
Verfahren und Einrichtung zur Steuerung einer Mikrospitzenanzeigevorrichtung
Title (fr)
Procédé et dispositif de commande d'un écran fluorescent à micropointes
Publication
Application
Priority
FR 9309022 A 19930722
Abstract (en)
[origin: EP0635819A1] The invention relates to a method for control of a fluorescent microdot screen consisting of pixels arranged into L rows and M columns of images capable of taking a discrete number of Q grey shades, in which the column voltage values are chosen in a strictly increasing series of N+1 values such that, with the row selection times being subdivided into S equal time intervals DELTA t, each voltage value is applied a whole number of times DELTA t, (NxS)+1 representing the number of grey levels, with N >/= 2 and S >/= 2. During a row selection time, the corresponding column voltage takes a first value Va for a certain number of time intervals DELTA t, then, if appropriate, during the remaining time intervals at most one second value Vb following the first one in the series of N voltages. The invention also relates to a control device for such a screen. <IMAGE>
IPC 1-7
IPC 8 full level
G09G 3/30 (2006.01); G09G 3/22 (2006.01); G09G 3/20 (2006.01)
CPC (source: EP US)
G09G 3/22 (2013.01 - EP US); G09G 3/2011 (2013.01 - EP US); G09G 3/2014 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0635819 A1 19950125; EP 0635819 B1 19981125; CA 2128357 A1 19950123; DE 69414771 D1 19990107; DE 69414771 T2 19990610; FR 2708129 A1 19950127; FR 2708129 B1 19950901; JP 2007140552 A 20070607; JP 3969748 B2 20070905; JP 3977412 B2 20070919; JP H07181917 A 19950721; US 5555000 A 19960910
DOCDB simple family (application)
EP 94401670 A 19940720; CA 2128357 A 19940719; DE 69414771 T 19940720; FR 9309022 A 19930722; JP 16976594 A 19940721; JP 2007025721 A 20070205; US 27832994 A 19940721