Patent ID: 8842129
Filing Date: 2014-09-23
Classification: G09G

Abstract:
1. A display device for displaying an image, pixels in the display device being displayed at a predetermined frequency of display, the display device comprising: a device for generating the image by generating pixels of the image the device for generating the image configured to generate a plurality of information windows that can be displayed superimposed, the image including mixed pixels whose value corresponds to a mixture of n superimposed layers of intermediate pixels from among m superimposed layers, with m being greater than n, an information window being supported by a layer of intermediate pixels and being parametrized by a window descriptor, the intermediate pixels being recorded in an image memory by a destructuring of each line of the layer of intermediate pixels by different latencies to store segments of the image at distinct memory addresses, the device for generating the image comprising at least one electronic component with logic gates, the at least one electronic component implementing: a selection of n intermediate pixels belonging to n active windows from among the plurality of windows for each mixed pixel of the said image to be generated and a recording of at least the following parameters arising from the window descriptor for each intermediate pixel selected: a layer identifier, an attribute and a value of the memory address within the image memory, a generation of a list of commands for access to at least one memory area of the image memory for a segment of the selected intermediate pixels, the memory addresses of said selected intermediate pixels being contiguous, a recordation of n composite lines of intermediate pixels, a composite line including a plurality of segments of the selected intermediate pixels originating from distinct layers of said mixed pixels of the image memory, a mixer configured to carry out a mixing of the values of the n selected intermediate pixels originating from the said composite lines of the intermediate pixels, said mixer configured to perform said mixing by deriving coefficients for a line in the n intermediate pixels from a table and using said coefficients as multipliers for RGB components in a foreground and a background of the image; and a reconstruction of the image by collecting pixels by using a reduced number of layers of intermediate pixels than the intermediate pixels recorded for displaying on the display device.