Patent ID: 8244176
Filing Date: 2012-08-14
Classification: H04B

Abstract:
1. A signal processing unit comprising: at least one antenna device relating to a plurality of signal processing including processing of a communication signal with a RFID tag as a communication target, said antenna device including an antenna for transmission and an antenna for reception; a priority control portion configured to control so that one signal processing among said plurality of signal processing is performed with priority over the other processings; a transmission processing device configured to transmit a transmission signal to said RFID tag from said antenna for transmission; and a receiving processing device configured to receive a reply signal returned from said RFID tag in response to said transmission signal by said antenna for reception and to perform processing of the received receiving signal, and said priority control portion includes: a signal transmittance adjustment device that can suppress transmittance of the receiving signal from said antenna for reception to said receiving processing device as said other signal processing; and a signal transmittance control device configured to control said signal transmittance adjustment device so that the transmittance of the receiving signal from said antenna for reception to said receiving processing device is suppressed at least while a transmission signal including a modulation signal is transmitted from said antenna for transmission as said one signal processing.