|United States Patent||7,664,136|
|Toebes , et al.||February 16, 2010|
Inline power for multiple devices in a wired data telecommunications network
A power sourcing equipment-powered device (PSE-PD) combination unit requests inline power from a connected PSE or other PSE-PD combination unit by having the PD portion of the PD-PSE combination unit adapt its electrical characteristics, if necessary, to obtain the maximum power available. The PD-PSE combination device keeps track of available power less power consumed locally with a summation unit. A PSE manager unit grants PD power requests from downstream devices based upon the available power left (e.g., original PSE power less losses less local consumption).
|Inventors:||Toebes; John Albert (Cary, NC), Li; Ping (Fremont, CA), Cham; Jack C. (San Leandro, CA)|
|Assignee:||Cisco Technology, Inc. (San Jose, CA)
|Filed:||June 2, 2005|