Multiplex communications – Fault recovery
Reexamination Certificate
2006-12-12
2006-12-12
Rao, Seema S. (Department: 2616)
Multiplex communications
Fault recovery
C370S235000, C370S412000, C455S069000, C714S018000
Reexamination Certificate
active
07149181
ABSTRACT:
An apparatus and method for re-transmitting erroneous packet data is disclosed. Each of the physical layers of the system includes a buffer, a timer, a controller, and a radio frequency unit. The buffer temporarily stores transmitted data in the form of a final data frame capable of being transmitted on a transmission line without any processing. The timer is a time counter adapted to limit the time, for which the transmission end waits for an acknowledgment to a transmission of data after the data transmission is made. If no acknowledgment signal is received when the timer expires the buffered data in the physical layer is re-transmitted. This reduces the data transmission delay resulting from the inter-layer movement of data generated during a re-transmission of erroneous data, and the transmission delay of packet data resulting from overhead time.
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patent: 6157612 (2000-12-01), Weerackody et al.
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patent: 6631132 (2003-10-01), Sourani
patent: 1166739 (1997-12-01), None
Fleshner & Kim LLP
Hom Shick
LG Electronics Inc.
Rao Seema S.
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