Wireless communication circuit, wireless communication terminal and method, recording medium, and program
First Claim
1. A wireless communication circuit comprising:
- receiving means for receiving a first electromagnetic wave having a first carrier frequency for communication based on a first wireless communication standard;
transmitting means for transmitting a second electromagnetic wave having a second carrier frequency for communication based on a second wireless communication standard; and
controlling means for controlling the second carrier frequency so that a frequency of an electromagnetic-interference wave that is generated by transmission of the second electromagnetic wave by the transmitting means does not fall within a predetermined frequency range with which reception sensitivity of the receiving means to the first electromagnetic wave is degraded.
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Accused Products
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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Citations
17 Claims
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1. A wireless communication circuit comprising:
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receiving means for receiving a first electromagnetic wave having a first carrier frequency for communication based on a first wireless communication standard; transmitting means for transmitting a second electromagnetic wave having a second carrier frequency for communication based on a second wireless communication standard; and controlling means for controlling the second carrier frequency so that a frequency of an electromagnetic-interference wave that is generated by transmission of the second electromagnetic wave by the transmitting means does not fall within a predetermined frequency range with which reception sensitivity of the receiving means to the first electromagnetic wave is degraded. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless communication terminal comprising:
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receiving means for receiving a first electromagnetic wave having a first carrier frequency for communication based on a first wireless communication standard; transmitting means for transmitting a second electromagnetic wave having a second carrier frequency for communication based on a second wireless communication standard; and controlling means for controlling the second carrier frequency so that a frequency of an electromagnetic-interference wave that is generated by transmission of the second electromagnetic wave by the transmitting means does not fall within a predetermined frequency range with which reception sensitivity of the receiving means to the first electromagnetic wave is degraded. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A wireless communication method comprising:
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a receiving step of receiving a first electromagnetic wave having a first carrier frequency for communication based on a first wireless communication standard; a transmitting step of transmitting a second electromagnetic wave having a second carrier frequency for communication based on a second wireless communication standard; and a controlling step of controlling the second carrier frequency so that a frequency of an electromagnetic-interference wave that is generated by transmission of the second electromagnetic wave in the transmitting step does not fall within a predetermined frequency range with which reception sensitivity to the first electromagnetic wave in the reception step is degraded.
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16. A recording medium having recorded thereon a computer-readable program that allows a computer to execute processing for receiving a first electromagnetic wave having a first carrier frequency for communication based on a first wireless communication standard, and processing for transmitting a second electromagnetic wave having a second carrier frequency for communication based on a second wireless communication standard, the program comprising a controlling step of controlling the second carrier frequency so that a frequency of an electromagnetic-interference wave that is generated by transmission of the second electromagnetic wave does not fall within a predetermined frequency range with which reception sensitivity to the first electromagnetic wave is degraded.
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17. A computer-readable program that allows a computer to execute processing for receiving a first electromagnetic wave having a first carrier frequency for communication based on a first wireless communication standard, and processing for transmitting a second electromagnetic wave having a second carrier frequency for communication based on a second wireless communication standard, the program comprising a controlling step of controlling the second carrier frequency so that a frequency of an electromagnetic-interference wave that is generated by transmission of the second electromagnetic wave does not fall within a predetermined frequency range with which reception sensitivity to the first electromagnetic wave is degraded.
Specification