Patent ID: 7443405
Filing Date: 2008-10-28
Classification: G09G

Abstract:
1. A gray-scale representation method for a plasma display panel, comprising: arranging, in time sequence, a plurality of subfields each having a brightness weight, and achieving gray-scale representation by a combination of the one or more of the plurality of subfields, each subfield of the plurality of subfields including an address period and a sustain period, an address pulse generating light being provided during the address period and sustain pulses generating light being provided during the sustain period, the gray-scale representation including gray scales ordered from a minimum gray scale value to a maximum gray scale value, a light corresponding to each gray scale including a light discharged during all of the address periods and all of the sustain periods of the subfields combined together to represent the gray scale, between every two adjacent gray scales, one gray scale of the two adiacent gray scales being a lower gray scale corresponding to a lower light and the other gray scale of the two adjacent gray scales being a higher gray scale corresponding to a higher light; and determining the number of sustain pulses for each subfield so that a light corresponding to the higher gray scale of two adjacent gray scales is greater than a light for the lower gray scale, and wherein the number of sustain pulses for each subfield is determined to make the number of sustain pulses for the higher gray scale of the two adjacent gray scales equal to the number of sustain pulses for the lower gray scale when the number of subfields for the higher gray scale is greater than the number of subfields for the lower gray scale.