Patent ID: 7110050
Filing Date: 2006-09-19
Classification: G09G

Abstract:
1. A method for processing video pictures for display on a display device having a plurality of luminous elements called plasma cells corresponding to the pixels of a picture, comprising the steps of: dividing the time duration of a video frame or video field into a plurality of sub-fields during which the luminous elements can be activated for light emission in pulses corresponding to a sub-field code word which is used for brightness control; and dividing a sub-field period into an addressing period, a lighting period and an erasing period, wherein, at least two different types of sub-fields are used within a frame period, the first of said different types of sub-fields being a self-priming sub-field (SPSF) and the second of said different types of sub-fields being a refreshing sub-field (RSF), wherein the self-priming sub-field/s are characterized by one or both of the following properties: i.) the addressing period of a self-priming subfield is longer than the addressing period of a refreshing sub-field; ii.) during the addressing period an increased writing voltage is applied to the luminous elements for pre-exciting the cells; and wherein at least one self-priming sub-field is positioned ahead of the refreshing sub-fields in a frame period.