Method for selecting transmission speeds for transmitting data packets over a serial bus
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United States of America Patent
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-
Apr 2, 1996
Grant Date -
N/A
app pub date -
Sep 27, 1994
filing date -
Sep 27, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a tree topology network, a method for determining the maximum transfer speed for data packets transmitted over a high performance acyclic serial bus is disclosed. The acyclic serial bus, patterned along the lines of the IEEE 1394 standard, is capable of operating at multiple transmission rates, depending upon the transmission rate of any particular node. Once the transfer speeds have been determined by finding transmission rates to and from an ancestor node, an efficient storage technique for representing the transfer speeds is also disclosed. The method supports packet speed selection for all types of data packets allowed by the IEEE standard, such as, for example, asynchronous, isochronous and broadcast packets.
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