Channel isolation arrangement and method for dissociated data

Details Channel isolation arrangement and method for dissociated data Channel isolation arrangement and method for dissociated data

1997-08-18

1999-08-31

Beausoliel, Jr., Robert W.

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Protection at a particular protocol layer

713201, G06F 1214

Patent

active

059448229

ABSTRACT:
A method allows computer systems to handle different classes of data that are not allowed to intermingle. The method ensures that elements of the computer system not associated with a given class of data could not read from or write to the system bus while data of a different class is being transported across the system bus (10). At the same time, the method ensures that the elements of the computer system that are associated with the given class of data being transported across the bus 10 are given access to the bus (10) and the data. This is accomplished by using a single bus (10), controlling system element access to the bus with transceivers (21-31). The transceivers (21-31) are turned on or off by signals derived from system knowledge of the class of data allowed to be read or written by each system element and hence the class of data on the bus (10).

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