Multiplex communications – Duplex
Reexamination Certificate
2011-04-05
2011-04-05
Vu, Huy D (Department: 2461)
Multiplex communications
Duplex
C370S356000, C709S215000
Reexamination Certificate
active
07920489
ABSTRACT:
Embodiments herein provide full duplex operation (i.e., simultaneous receiving and transmitting of data over a network) of a network device of a computer system. Receiving and transmitting threads are used for receiving and transmitting data using the network device, the threads requiring access to an associated data structure to use the network device. Conventionally, the data structure is locked to allow access to only one thread at a time to protect against information inconsistencies in the data structure. Some embodiments remove the locking feature of the data structure to provide simultaneous access to the data structure by the receiving and transmitting threads, and thus allow full duplex operation of the network device. Protections against information inconsistencies in the data structure may be provided, including providing separate receiving and transmitting information sections in the data structure and assurances that only one transmitting thread accesses the data structure at any time.
REFERENCES:
patent: 6347337 (2002-02-01), Shah et al.
patent: 2007/0180310 (2007-08-01), Johnson et al.
patent: 2007/0274296 (2007-11-01), Cross et al.
Hailu Kibrom T
Net App, Inc.
Stattler-Suh PC
Vu Huy D
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