EP 0329528 B1 19930804 - METHOD OF CONTROLLING A MATRIX DISPLAY SCREEN, AND DEVICE FOR CARRYING OUT THIS METHOD
Title (en)
METHOD OF CONTROLLING A MATRIX DISPLAY SCREEN, AND DEVICE FOR CARRYING OUT THIS METHOD
Publication
Application
Priority
FR 8801741 A 19880215
Abstract (en)
[origin: EP0329528A1] Method of controlling a matrix display screen permitting adjustment of its contrast in the case of a liquid-crystal screen and its brightness in the case of a microchip fluorescent screen, consisting in periodically applying, to row conductors, addressing signals VI having, during a certain period, a value Vmax in absolute value, and in applying control signals to column conductors. There are applied to the row conductors addressing signals for which the periods during which they have a value Vmax partially overlap, for two consecutive rows. <??>Device for carrying out this method. Application to the construction of displays for viewing still or moving images. <IMAGE>
IPC 1-7
IPC 8 full level
G02F 1/133 (2006.01); G09G 3/22 (2006.01); G09G 3/36 (2006.01)
CPC (source: EP US)
G09G 3/22 (2013.01 - EP US); G09G 3/3611 (2013.01 - EP US); G09G 2310/0205 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0329528 A1 19890823; EP 0329528 B1 19930804; EP 0329528 B2 19970903; DE 68907942 D1 19930909; DE 68907942 T2 19940210; DE 68907942 T3 19980326; FR 2627308 A1 19890818; FR 2627308 B1 19900601; JP H025088 A 19900109; US 5032832 A 19910716
DOCDB simple family (application)
EP 89400355 A 19890208; DE 68907942 T 19890208; FR 8801741 A 19880215; JP 3123789 A 19890213; US 31034089 A 19890214