METHOD AND SYSTEM FOR DISTRIBUTING PROCESSING INST

专利名称：METHOD AND SYSTEM FOR DISTRIBUTING

PROCESSING INSTRUCTIONS WITH ADATATO BE PROCESSED

发明人：MOSES, Robert, W.,KARR, Brian,

D.,BARTLETT, Gregory, J.

申请号：EP999218.7申请日：19990510公开号：EP1076850A2公开日：20010221

摘要：A method and apparatus is described for recovering data sample clock ratesfrom received isochronous streams of data packets including associated time stampvalues, such as in an IEEE 1394 bus-interconnected system. The difference betweenconsecutive time stamp values is determined by successively latching the time stampvalues and applying them to a subtracter circuit to produce a difference value. Thisdifference value is then successively decremented by a down counter, with the downcounter then producing a signal pulse and loading a next difference value upon

completion of the count. The pulsed signal is applied to a phase-locked loop to provide afrequency multiple, and a clock signal is correspondingly produced that has a frequencyproportional to the difference between the consecutive time stamp values. Data inputbuffer levels may be monitored and the clock signal frequency adjusted accordingly.

申请人：Digital Harmony Technologies, L.L.C.

地址：95 Yesler Way Seattle, WA 98104 US

国籍：US

代理机构：Grünecker, Kinkeldey, Stockmair & SchwanhäusserAnwaltssozietät

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