Patent ID: 8405672
Filing Date: 2013-03-26
Classification: G09G

Abstract:
1. A method for causing display of different images by a display unit comprising subpixels each of which is configured to emit a respective one of a palette of predetermined and different colors and is configured to emit its respective color, if at all, with a luminance that is a function of a corresponding and variable subpixel drive value represented by a respective drive signal of the subpixel, the method comprising: receiving image refreshing or image modifying signals, each image modifying signal being associated with either a fully specified image frame that is different from an immediately previous frame or is associated with only a newly modified subportion of the previous image frame, each image modifying signal comprising pixel data for each pixel either of the associated, fully specified image frame or of the associated, newly modified subportion of the image frame, wherein each image modifying signal associated with only a newly modified subportion of the previous image frame does not include pixel data for one or more pixels outside of the newly modified portion; and for each received image modifying signal, performing, by a circuit, an associated and selective SubPixel Rendering operation (SPR operation) which generally, associates each given pixel represented by the received image modifying signal with a corresponding set of display subareas, which corresponding subareas are portions of the display unit's full display area to which luminance contribution might be made from the original luminance associated with the given and being SPR-wise rendered pixel, and from which corresponding subareas summed drive luminances are derived for one or more subpixel lights that are potentially to be emitted to substantially produce the color and original luminance of the given and being SPR-wise rendered pixel, the selective SPR operation generally providing a corresponding subpixel subtotal value for each subpixel of the set of one or more subpixels in the display subareas associated with the respective and being SPR-wise rendered, given pixel of the received image modifying signal, wherein if the corresponding display subareas of the being SPR-wise rendered pixel of a newly modified subportion do not contain all their subpixels inside the newly modified subportion, meaning that an entire subpixel of at least one of said predetermined colors is outside of the corresponding newly modified subportion encompassing the being SPR-wise rendered pixel, then the performed and selective SPR operation selectively does not provide a modifying subpixel subtotal value for the at least one external subpixel that is located outside of the newly modified subportion.