Universal serial bus transaction processing tasks scheduling...

Details Universal serial bus transaction processing tasks scheduling... Universal serial bus transaction processing tasks scheduling...

2005-08-30

2005-08-30

Myers, Paul R. (Department: 2111)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S005000, C710S054000, C710S305000, C710S310000, C710S313000

Reexamination Certificate

active

06938103

ABSTRACT:
An apparatus and method is provided for scheduling USB transaction processing tasks. A periodic queue head list associated with a USB host controller is configured to be processed once every polling period. The periodic queue head list describes a location of the USB transaction processing tasks scheduled for processing. The entries in a frame list of the USB host controller are linked to identify a corresponding periodic queue head list. A USB transaction processing task processed by the USB host controller is assigned to one of the periodic queue head list. A desired response time for the USB transaction processing task is matched with the polling period of the periodic queue head list.

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