Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reissue Patent
2008-01-22
2008-01-22
Browne, Lynne H. (Department: 2116)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S107000, C710S240000
Reissue Patent
active
10714478
ABSTRACT:
delete-start id="DEL-S-00001" date="20080122" ?Control of a loop of a fiber-channel arbitrated-loop serial communications channel is maintained (i.e., the loop connection is held open) as long as a minimum amount of data, which optionally is determined by programming (called a “programmable amount of data”), is available for transmission, in order to reduce the overall amount of time spent arbitrating for control of the loop. The improved communications channel system includes a channel node having one or more ports, each port supporting a fiber-channel arbitrated-loop serial communications channel loop, wherein each port arbitrates for control of that port's attached channel loop. The system also includes an arbitration-and-control apparatus to reduce arbitrated-loop overhead, wherein control of the channel loop, once control is achieved by arbitration, is maintained by the arbitration-and-control apparatus as long as a predetermined amount of data is available within control of the node. In addition, a method to reduce arbitrated-loop overhead is described.delete-end id="DEL-S-00001" ?insert-start id="INS-S-00001" date="20080122" ?Control of a serial communications path is maintained (i.e., the connection is held open)as long as a minimum amount of data, which optionally is determined by programming(called a “programmable amount of data”), is available for transmission, in order to reduce the overall amount of time spent opening the connection to the serial communications path. The system includes a serial device having n ports(where n equals one or more), each port supporting a serial communications path. Each port arbitrates for control of that port's attached serial communications path. The system also includes an arbitration-and-control apparatus, wherein control of the serial communications path, once control is achieved, is maintained by the arbitration-and-control apparatus as long as a predetermined amount of data is available within control of the serial device. In addition, a method to reduce connection overhead is described.insert-end id="INS-S-00001" ?
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Miller Michael H.
Westby Judy Lynn
Browne Lynne H.
Du Thuan
Kelly Joseph R.
Seagate Technology LLC
Westerman, Champlain & Kelly, P.A.
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