Apparatus and method for preventing computer access by unauthorized personnel
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United States of America Patent
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-
Aug 15, 1989
Grant Date -
N/A
app pub date -
Aug 7, 1987
filing date -
Aug 7, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus provides a secure input/output command system by the operating system generating a virtual input/output command including a virtual channel number, verifying that the user has authorization to access the processes and the device, and then generating a physical input/output command for transfer over a system bus to the device addressed by the physical channel number included in the command.
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