公开(公告)号：EP2673889A2

公开(公告)日：2013-12-18

申请号：EP12705547.3

申请日：2012-02-06

申请人： Access Business Group International LLC

发明人： NORCONK, Matthew J. ,  SCHWANNECKE, Joshua K. ,  MOORE, Colin J. ,  TAYLOR, Joshua B. ,  KUYVENHOVEN, Neil W. ,  LIFF, Dale R. ,  AMISTADI, Jason L. ,  GRUICH, Robert D. ,  KELLEY, Arthur ,  ARMSTRONG, Kenneth C.

IPC分类号： H04B5/00 ,  H02J5/00

摘要： A communication system that uses keyed modulation to encode fixed frequency communications on a variable frequency power transmission signal in which a single communication bit is represented by a plurality of modulations. To provide a fixed communication rate, the number of modulations associated with each bit is dynamic varying as a function of the ratio of the communication frequency to the carrier signal frequency. In one embodiment, the present invention provides dynamic phase-shift-keyed modulation in which communications are generated by toggling a load at a rate that is a fraction of the power transfer frequency. In another embodiment, the present invention provides communication by toggling a load in the communication transmitter at a rate that is phase locked and at a harmonic of the power transfer frequency. In yet another embodiment, the present invention provides frequency-shift-keyed modulation, including, for example, modulation at one of two different frequencies.