Abstract: The invention pertains to the adaptive vertical stretching of an original image so that the resulting stretched image optimally fits within the vertical boundary of a display having a fixed number of pixel lines. A line replication state machine provides the stretching of the original image, while a line replication generator preferably generates new line replication numbers by sequentially incrementing an initial line replication number in an integer by integer fashion. A display image measuring device provides a display fit status to the state machine, enabling the state machine to determine whether a resulting stretched image fits within the display exceeded the vertical height of the display. The state machine toggles between two types of line stretching that gives a stretched image closely fitted to the maximum image size available in an applicable display.

Abstract: A ring oscillator is embedded into the same silicon wafer as the functional circuits. The output of the ring oscillator and a display clock signal are both directed into seperate inputs of a multiplexer which is controlled by the computer BIOS. When the BIOS desires to read the ring oscillator frequency, the multiplexer is switched, thus providing the output of the ring oscillator to the display status register. The resulting frequency may be used to optimize clock speeds.