Method for setting time stamp in SYT field of packet headers for IEEE-1394 devices
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United States of America Patent
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Apr 16, 2002
Grant Date -
Sep 6, 2001
app pub date -
Feb 20, 1998
filing date -
Feb 20, 1998
priority date (Note) -
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Abstract
Isochronous data packets transmitted within a digital network having a bus architecture that complies with the IEEE-1394 Standard for a High Performance Serial Bus are stamped with a presentation time stamp value determined according to a computed packet rate for the data. For the case where the presentation time stamp field of a first packet of a second frame of data for transmission in the digital network is set with the presentation time value, the packet rate may be computed by measuring a difference between a desired presentation time value of a first packet in a first frame of the data and an actual transmission time of the first packet of the first frame. The first frame preceding the second frame in time of transmission within the network.
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