Telecommunications – Transmitter and receiver at separate stations – Distortion – noise – or other interference prevention,...
Reexamination Certificate
2006-04-18
2006-04-18
Nguyen, Simon (Department: 2685)
Telecommunications
Transmitter and receiver at separate stations
Distortion, noise, or other interference prevention,...
C455S078000, C455S114200, C455S295000, C455S296000, C375S346000
Reexamination Certificate
active
07031662
ABSTRACT:
In a communication terminal that is capable of carrying out communications based on a plurality of communication standards, for example, a cellular phone, information representing a reception carrier frequency of a wireless channel being received by a cellular-phone functional block is output from a CPU to a contactless-IC-card-reader/writer functional block. In the contactless-IC-card-reader/writer functional block, a controller controls a switching circuit to switch a transmission carrier frequency being used so that harmonic components of an electromagnetic wave radiated from a coil antenna will not work as an electromagnetic-interference wave that affects reception sensitivity of the cellular-phone functional block.
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Arisawa Shigeru
Kusakabe Susumu
Mizusawa Nishiki
Nagano Tomonori
Nakazawa Takaki
Nguyen Simon
Sony Corporation
Sony Ericsson Mobile Communications Japan Inc.
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