Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2007-09-28
2010-06-29
Trinh, Tan (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S108000, C455S116000, C455S118000, C455S137000
Reexamination Certificate
active
07747274
ABSTRACT:
Amplitude modulation of multiple carriers provides a pulse width modulated train resulting in a novel and effective communication mechanism to overcome difficulties in certain RF applications, particularly in the area of Radio Frequency Identification (RFID). A novel conceptual pulse is formed and developed using a set of RF frequencies, such as ultra wideband frequencies, amplitude modulated to form a pulse width modulated binary coded signal. The concept is to wirelessly convey information only to a receiver at a specified distance or range. The RF energy may continue on in space, but receivers of the same design would only receive information from a transmitter if the receivers are located at a specified distance. Equivalent receivers at all other distances would see noise.
REFERENCES:
patent: 5547250 (1996-08-01), Childers
patent: 5633898 (1997-05-01), Kishigami et al.
patent: 6016422 (2000-01-01), Bartusiak
patent: 6078593 (2000-06-01), Eames et al.
patent: 6081527 (2000-06-01), Chappel et al.
patent: 6552661 (2003-04-01), Lastinger et al.
patent: 6574333 (2003-06-01), Manchester et al.
patent: 7099368 (2006-08-01), Santhoff et al.
patent: 2001/0008450 (2001-07-01), Nakazawa
patent: 2003/0035465 (2003-02-01), Takamura
patent: 2003/0091122 (2003-05-01), Humphreys et al.
patent: 2005/0246094 (2005-11-01), Moscatiello
patent: 2006/0187046 (2006-08-01), Kramer
Lovell Michael R.
Maina Joshua Y.
Mickle Marlin H.
Schaefer Laura A.
Eckert Seamans Cherin & Mellott , LLC
Levy, Esq. Philip E.
Trinh Tan
University of Pittsburgh - Of the Commonwealth System of Higher
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