Patent ID: 6125448
Filing Date: 2000-09-26
Classification: G06F,H04L

Abstract:
A data processing system comprising in combination:a single network bus containing data transmission lines and a network power line, the network bus complying with a network standard, the network standard having a maximum allowable current and a maximum allowable voltage in the network power line;a first power supply unit connected to the network power line;a first network load connected to the first power supply and the network power line;a second network load connected to the network power line;a second power supply unit connected to the second network load, the second power supply unit supplying voltage to the second network load which is higher than voltage supplied by the network power line;means for selecting whether the first power supply or the network power line powers the first network load;means for limiting voltage from the power line to the first network load and the second network load to a value less than or equal to the maximum allowable voltage for the network standard;means for limiting current from the first power supply unit to the network power bus to a value less than or equal to the maximum allowable current for the network standard.