Patent ID: 6198469
Filing Date: 2001-03-06
Classification: G09G

Abstract:
An apparatus to generate frame-rate modulation data in response to input color pixel data for a digital display having pixels arranged in rows and columns and into tiles each having a predetermined number of pixels, the apparatus comprising:a first memory receiving as input pixel mapping data, the first memory selectively outputting pixel mapping data received in response to row and column addresses;an index generating circuit coupled to the first memory, a frame counter, a horizontal pixel counter, and a vertical line counter, the index generating circuit generating a waveform accessing index based on a horizontal pixel count, a vertical line count, a frame count, pixel mapping data output from the first memory, and pixel color offset values;a second memory for storing a predetermined number of brightness-level waveforms each having a predetermined number of command bits corresponding to the frames in a frame cycle associated with the waveforms; anda multiplexing circuit coupled to the second memory and the index generating circuit, the multiplexing circuit selecting for output a brightness-level waveform from the second memory in response to the waveform accessing index and input pixel color data.