H - Electricity – 04 – L
Patent
H - Electricity
04
L
363/17
H04L 25/14 (2006.01) G06F 1/10 (2006.01) H04L 7/00 (2006.01) H04L 7/02 (2006.01)
Patent
CA 1307598
ABSTRACT Disclosed is a method for accurately transmitting a series of data items between a first system and a second system, each of the first and second system being coupled to a clock signal having a cycle time, wherein the clock signal is skewed between the first and second system and clock signal skew plus data transmission time exceeds the cycle time of the clock signal. The method comprises the steps of: (a) transmitting the data items serially along a data path in the first system as a direct function of the clock signal in the first system; (b) coupling the data path to inputs of N state devices arranged in parallel in the first system; (c) sequentially enabling the N state devices as a first indirect function of the clock signal in the first system to capture the data items being transmitted serially along the data path in an interleaved manner through a continuous rotation among the N state devices; (d) coupling outputs of the N state devices to corresponding inputs of a multiplexer, which multiplexer is in the second system; (e) coupling an output line of the multiplexer to an input of a data item receiving state device in the second system; (f) operating a select line of the multiplexer as a second indirect function of the clock signal in the second system to sequentially select the inputs through a continuous rotation among the inputs to transmit the interleaved data items from the inputs serially to the output line of the multiplexer; (g) enabling the data item receiving state device as a direct function of the clock signal in the second system to serially capture the data items on the output line of the multiplexer; (h) setting the first indirect function of the clock signal to hold each one of the captured data items in one of the N state devices in the first system for a period of time which is greater than the cycle time of the clock signal.
595335
Hesch Leon Dale
Ingraham Andrew Dudley
Sager David Joseph
Samaras William Arthur
Digital Equipment Corporation
Smart & Biggar
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