Patent ID: 6564333
Filing Date: 2003-05-13
Classification: G06F

Abstract:
In a computer system peripheral device connected to multiple power sources, a circuit for arbitrating between a first power source and a second power source, said circuit comprising:a first component coupled between said first power source and said second power source, said first component adapted to conduct current from said second power source when power is not available from said first power source, wherein said first power source is selected from a primary power source connected to said peripheral device and a first auxiliary power source connected to said peripheral device, and wherein said second power source is a second auxiliary power source connected to said peripheral device; a second component integral with said first component, wherein said second component is adapted to conduct current from said second power source in combination with said first component and to substantially prevent current from flowing from said first power source to said second power source; a third component coupled between said first power source and said second power source, wherein said third component is adapted to regulate voltage such that a voltage from said first power source and a voltage from said second power source are approximately equal; a fourth component coupled between said primary power source and said first auxiliary power source, said fourth component adapted to conduct current from said primary power source when said first auxiliary power source is not available and to otherwise conduct power from said first auxiliary power source; and a fifth component integral with said fourth component, wherein said fifth component is adapted to conduct current from said primary power source in combination with said fourth component and to substantially prevent current from flowing from said first auxiliary power source to said primary power source.