US Patent 7091944 Display controller

Systems and methods are disclosed for controlling a display device having a display scan line rate by storing incoming data in a buffer, the buffer having a usage level measure; comparing the usage level to the display scan line rate; and adjusting a width of a display scan line to avoid buffer overflow or underflow. The system avoids a costly external frame buffer and automatically handles uncertainties such as jitter in input and output clocks when the system operates in different environments.