Patent ID: 8806314
Filing Date: 2014-08-12
Classification: G06F

Abstract:
1. A communication device comprising: a first circuit board in which a first component for communication is implemented; and a second circuit board in which a second component for communication is implemented, wherein a communication is performed between the first component and the second component, the first component includes a transmitting unit, a judging unit, and a control unit, the second component includes a returning unit, the transmitting unit of the first component transmits a plurality of detection signals having different frequency spectrums to the second component, upon receiving the detection signals, the returning unit of the second component returns, as return signals, respective signal waveforms of the received detection signals to the first component, the judging unit of the first component judges authenticity of the received return signals by referring to the transmitted detection signals, and when the judging unit judges that the received return signals are not authentic, the control unit adds a restriction to the communication performed between the first component and the second component.