Apparatus for preventing latch up of two systems which are conne

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G06F 100

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active

056755252

ABSTRACT:
A method for preventing latch up of first and second systems which are connected electrically to each other and which have a respective independent power supply is disclosed. At least one of the systems is a computer system. The method includes the steps of: providing a buffer unit having signal lines adapted to be connected electrically to the first and second systems to permit signal transmission between the first and second systems; and providing a buffer control unit connected electrically to the buffer unit and adapted to be connected electrically to the power supplies of the first and second systems. The buffer control unit is adapted to detect voltages of the power supplies of the first and second systems and disables the buffer unit so as to disconnect the first and second systems from each other when the voltage of the power supply of any one of the first and second systems is not within a predetermined range.

REFERENCES:
patent: 4485439 (1984-11-01), Rothstein
patent: 5157769 (1992-10-01), Eppley et al.
patent: 5428798 (1995-06-01), Sekine et al.
patent: 5475271 (1995-12-01), Shibasaki et al.
patent: 5555421 (1996-09-01), Enzinna

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