Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output command process
Reexamination Certificate
2009-02-25
2010-11-23
Tsai, Henry W (Department: 2184)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output command process
C710S035000
Reexamination Certificate
active
07840719
ABSTRACT:
Input/output processing is facilitated by reducing communications between input/output communications adapters and control units during input/output processing. The number of exchanges and sequences between an input/output communications adapter and control unit is reduced by sending a plurality of commands from the adapter to the control unit as a single entity for execution by the control unit. The control unit executes the commands and provides the data, if any, in one sequence. The control unit relieves the adapter of the responsibility of tracking state of the individual commands and is able to calculate precise measurement data relating to execution of the commands.
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Casper Daniel F.
Flanagan John R.
Campbell John
Cantor & Colburn LLP
International Business Machines - Corporation
Roche John B
Tsai Henry W
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