Distributed scheduling for the transfer of real time, loss sensi

Details Distributed scheduling for the transfer of real time, loss sensi Distributed scheduling for the transfer of real time, loss sensi

1996-12-06

1999-05-04

Sheikh, Ayaz R.

395294, 395299, 395728, 395729, 395730, 395731, G06F 1318

Patent

active

059012960

ABSTRACT:
Data is transferred over a bus from one device to another, or between one device and another system resource, such as a central processor. This data is classified into one of several types. "Hard real time" data must be transferred within a specified time limit or "deadline" and it is unacceptable to miss a deadline. "Soft real time" data should be transferred before a deadline and, although some missed deadlines are tolerable, the lower the number of missed deadline the better. "Loss sensitive" data has no deadlines, but any loss of data is unacceptable. "Non-real time" data also has no deadlines, but the lower the time delay in transferring the data the better. The intelligence that controls the transfer of data and schedules access to the bus is distributed throughout the system. Part of this scheduling intelligence is included in the bus arbiter, while the remainder is incorporated in the devices themselves.

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