Methods and apparatus for controlling access to resources in...

Details Methods and apparatus for controlling access to resources in... Methods and apparatus for controlling access to resources in...

2007-06-11

2009-11-10

Phan, Raymond N (Department: 2111)

Electrical computers and digital data processing systems: input/

Access arbitrating

C710S244000, C710S118000

Reexamination Certificate

active

07617344

ABSTRACT:
Requestors issue access requests to a memory controller. The access requests issued are accumulated in a command queue of the memory controller. When the amount of access requests accumulated in the command queue is smaller than or equal to a threshold, a free pass (FP) is granted to specified requesters. When issuing access requests, requesters request and acquire tokens before issuing the access requests if they have no FP granted. If the requesters have an FP, they simply issue the access requests.

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patent: 5918055 (1999-06-01), Crawford et al.
patent: 7315912 (2008-01-01), Reed
patent: 2005/0138621 (2005-06-01), Clark
patent: 2007/0101033 (2007-05-01), Chen et al.
patent: 2007/0248014 (2007-10-01), Xie et al.
U.S. Appl. No. 11/559,980, filed Nov. 15, 2006.

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