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专利名称：Signaling frequency detection for a
communications network
发明人：Michael W. Patrick,James A. Daly申请号：US08/406261申请日：19950316公开号：US05537098A公开日：19960716
摘要：An apparatus is provided for detecting the signaling frequency of
communications signals transported on the trunk and lobe circuits of a token ring. Thecommunications signals including Differentially Manchester Encoded data signals. Theapparatus includes an internal trunk circuit and a plurality of ports including an input portfor connecting to an input trunk segment, and an output port for connecting to anoutput trunk segment, and a plurality of lobe ports for connecting to the lobe circuits.Means are provided for sensing the frequency of the data signals at each of said pluralityof ports. The sensing means including means for taking multiple successive timingsamples, and grouping the samples into quality groups.
申请人：DIGITAL EQUIPMENT CORPORATION
代理人：Dirk Brinkman,Ronald Hudgens,Arthur Fisher
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