Patent ID: H0002186

Claim:
In a video controller having a processor for processing executable instructions and associated data and a number of data ports, a method of acquiring extended display identification data (EDID) by a requesting one of the data ports, comprising: activating an on-board power supply; disconnecting an off-board power supply arranged to provide power to a memory device used to store the EDID and the executable instructions and associated data when the on-board power supply is activated; providing power from the on-board power supply to the memory device used to store the EDID and the executable instructions and associated data; providing power from the on-board power supply to an on-board clock circuit capable of providing a high frequency clock signal; providing the high frequency clock signal from the on-board clock circuit to the memory device; and if a memory read operation was in progress when the on-board power supply was activated, then completing the memory read operation.