USB port for employing a plurality of selectable data...

Details USB port for employing a plurality of selectable data... USB port for employing a plurality of selectable data...

2011-08-09

2011-08-09

Peyton, Tammara (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

C710S003000, C710S038000, C710S040000, C710S044000, C370S537000, C370S540000, C370S355000

Reexamination Certificate

active

07996586

ABSTRACT:
A USB port transmitter includes a plurality of arbiters, each employing a distinct priority rule to select one USB transmission from among multiple scheduled USB transmissions based on their types. A selector selects one of the arbiters to select the one USB transmission from among the multiple scheduled USB transmissions. A programmable storage element controls the selector to select the one arbiter. In one embodiment, at least a first arbiter prioritizes header/data packets higher than link commands, and at least a second arbiter prioritizes link commands higher than header/data packets. In one embodiment, at least one arbiter prioritizes flow control and power management link commands higher than header/data packets. In one embodiment, at least a first of the arbiters prioritizes USB LGO_Ux link commands higher than USB LAU/LXU link commands, and at least a second arbiter prioritizes USB LAU/LXU link commands higher than USB LGO_Ux link commands.

REFERENCES:
patent: 5958020 (1999-09-01), Evoy et al.
patent: 6131135 (2000-10-01), Abramson et al.
patent: 7685374 (2010-03-01), Diggs et al.
patent: 7760768 (2010-07-01), Lee
patent: 7904620 (2011-03-01), Yao et al.
patent: 1102171 (2001-05-01), None

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