Telecommunications – Transmitter and receiver at separate stations
Reexamination Certificate
2005-08-23
2010-10-26
Nguyen, Simon D (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
C455S041200, C455S333000, C455S558000, C340S010100
Reexamination Certificate
active
07822383
ABSTRACT:
The present invention relates to a semiconductor integrated circuit and a wireless communication apparatus that can be reduced in size without deteriorating a receiving sensitivity and a transmission efficiency. Communication with an external reader/writer and an external non-contact IC card is carried out through a common antenna211. The signal received from the external reader/writer or the external non-contact IC card through the antenna is supplied to an ASK demodulation circuit149and demodulated. The signal received from the external reader/writer is full-wave rectified and smoothed by an full-wave rectification and smoothing circuit composed of diodes231, 232and a capacitor233, and the power obtained from the full-wave rectified and smoothed signal is supplied to respective units of a semiconductor integrated circuit101. The present invention can be applied to a mobile phone.
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Japanese Office Action issued Jun. 3, 2010 in corresponding Japanese Patent Application JP2004-255183.
Enomoto Kazuyoshi
Miyagawa Yoichi
Suzuki Mamoru
Yoshida Yuko
FeliCa Networks, Inc.
Nguyen Simon D
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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