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AssigneeNintendo Co., Ltd.
InventorsJun Pan, Samir Abou-Samra, Robert Champagne, Claude Comair, Sun Tjen Fam, Prasanna Ghali, Xin Li
Estimating the term…
Effective color resolution of a limited-memory color-mapped display system such as a portable liquid crystal display (LCD) handheld video game system can be increased by changing the color mapping information during active display time (e.g., during the horizontal blanking interval between rasterization of successive lines on the display). A subset of the color mapping information can be rewritten during each horizontal blanking period. A full color bitmapped source image can be converted into a color-mapped image in a way that optimizes the use of such color map updates. Since photographic and photorealistic images typically don't exhibit abrupt color changes between neighboring pixels, such techniques can result in display of a color image with very high color resolution (e.g., having as many as 2048 different colors) on hardware intended to permit simultaneous display of only a much smaller number of different colors (e.g., only 56 different colors simultaneously).
A storage medium that stores code for execution by a handheld computing device of the type including a color display and display hardware that generates a color image on said color display during a display interval between vertical synchronization pulses based at least in part on color mapping data stored in a color memory, said color data encoding a maximum number N of different colors that can typically be displayed on said color display simultaneously, said stored code providing:
A color-mapped display system comprising:
In a handheld device including a color liquid crystal display that displays lines of pixels within a frame time, horizontal blanking intervals occurring between display of successive ones of said lines of pixels, said device further including color display circuitry that color maps graphics information for display based on a stored color memory storing plural color palettes, a method comprising:
Dependencies are inferred from the claim text.