H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/26 (2006.01) H04J 3/12 (2006.01) H04L 5/14 (2006.01) H04L 25/49 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2254960
A method for determining characteristics of a data communication channel between first and second data communication devices. The method includes the step of sending a relatively low power digital probe signal over said channel from said first to said second data communication devices. The method further includes sending a second digital probe signal corresponding to an analog signal having a relatively high-frequency signal with a time-varying dc component from said first to said second data communication devices. The second data communication device receives a signal, said received signal corresponding to said probe signals sent by said first device. In addition, the second data communication device determines whether said received signal varies from a predetermined standard.
La présente invention concerne un procédé de détermination des caractéristiques d'un canal de communication de données entre un premier et un second dispositifs de communication de données. Le procédé consiste d'abord à envoyer un signal de sonde numérique à basse puissance sur le canal, du premier vers le second dispositif de communication de données. Le procédé consiste ensuite à envoyer un second signal de sonde numérique correspondant à un signal analogique comprenant un signal de fréquence relativement élevée avec une composante courant continu variant avec le temps, du premier vers le second dispositif de communication de données. Le second dispositif de communication de données reçoit un signal, le signal reçu correspondant aux signaux de sonde envoyés par le premier dispositif. En outre, le second dispositif de communication de données détermine si le signal reçu s'écarte d'une norme prédéterminée.
Davenport Bert A.
Jankus Peter P.
Renkel James A.
3com Corporation
Mbm & Co.
LandOfFree
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