Patent ID: 6181306
Filing Date: 2001-01-30
Classification: G09G

Abstract:
A method for adjusting an overall luminosity of at least a part of a screen comprising cells arranged in rows and columns and configured to display half tones, comprising the steps of:applying to a first row a semi-selective operation followed by a selective operation, said selective operation being delayed from said semi-selective operation by a weighted delay time having a duration equal to a time interval between said application of said semi-selective operation and a next subsequent semi-selective operation multiplied by a factor k, said factor being chosen between 0 and 1 and being adjustable to the desired luminosity, andrepeating said applying step non-periodically to said first row, in order to display an image with half tones, the duration of a first weighted delay time between a first selective operation and a first semi-selective operation being different from the duration of a second weighted delay time between a second selective operation and a second semi-selective operation for a same value of said factor.