Patent ID: 6040819
Filing Date: 2000-03-21
Classification: G09G

Abstract:
A display apparatus, in which one field is divided into a plurality of sub-fields, and a relative ratio of luminescent time of each sub-field is previously determined so that by determining a combination of luminescence and non-luminescence in respective sub-fields for a picture element, a gradation level representing by a total sum of said luminescent time in said one filed is established to provide a half-tone display, comprising:code conversion means for converting a picture signal into a coded signal including a plurality of bits which indicate said combination of luminescence and non-luminescence in said respective sub-fields,wherein, when a gradation level of said picture element changes from a first level in which a first display is performed by luminescence in a first sub-field which has a first relative ratio of luminescent time to a second level in which a second display is performed by luminescence in a second sub-field which has a second relative ratio of luminescent time which is greater than said first relative ratio or when said gradation level changes from said second level to said first level, said code conversion means provides a code conversion when said gradation level is in said second level, and a third display is performed by luminescence in a third sub-field which has a third relative ratio of luminescent time which is not greater than said first relative ratio.