Telecommunications – Transmitter and receiver at separate stations – Near field
Reexamination Certificate
2007-06-26
2007-06-26
Zewdu, Meless N. (Department: 2617)
Telecommunications
Transmitter and receiver at separate stations
Near field
C455S041200, C455S077000, C455S078000, C455S120000, C455S169100
Reexamination Certificate
active
11373456
ABSTRACT:
Electronic circuitry supports utilization of a series of pulses of varying width to tune a transducer (e.g., a coil that produces or receives a magnetic field) for transmitting or receiving. For example, a control voltage generator generates a sequence of digital pulses of varying pulse widths to produce respective control voltages. The control voltage generator applies a produced control voltage to a varactor element whose capacitance changes depending on a magnitude of the produced control voltage. The varactor element forms part of a tank circuit. Consequently, the series of pulse widths controls an operating frequency of the tank circuit at different times. The tank circuit includes an inductive coil that is tuned to produce or receive a magnetic or inductive field.
REFERENCES:
patent: 3801799 (1974-04-01), Atkins
patent: 3803495 (1974-04-01), Reynolds
patent: 3916335 (1975-10-01), Masson
patent: 4008429 (1977-02-01), Phalan
patent: 4531117 (1985-07-01), Nourse et al.
patent: 4562411 (1985-12-01), O'Rourke et al.
patent: RE32686 (1988-05-01), Dages
patent: 5392001 (1995-02-01), Uhling et al.
patent: 5589844 (1996-12-01), Belcher et al.
patent: 5701121 (1997-12-01), Murdoch
patent: 5889437 (1999-03-01), Lee
patent: 5969439 (1999-10-01), Johannessen
patent: 6323739 (2001-11-01), Andrews
patent: 6362789 (2002-03-01), Trumbull et al.
patent: 6417675 (2002-07-01), Johnson
patent: 6424820 (2002-07-01), Burdick et al.
patent: 6459882 (2002-10-01), Palermo et al.
patent: 6621410 (2003-09-01), Lastinger et al.
patent: 6812802 (2004-11-01), Godambe et al.
patent: 6888504 (2005-05-01), Chiang et al.
patent: 6963307 (2005-11-01), Mohamadi
patent: 7035608 (2006-04-01), Palermo et al.
patent: 2002/0062132 (2002-05-01), Kramer et al.
patent: 2002/0160722 (2002-10-01), Terranova et al.
patent: 2003/0219035 (2003-11-01), Schmidt
patent: WO 96/37052 (1996-11-01), None
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration, Aug. 30, 2005.
Palermo Vincent
Terranova Domenic F.
Aura Communications Technology, Inc.
Chapin IP Law LLC
Kriz, Esq. Paul P.
Zewdu Meless N.
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