Patent ID: 8456281
Filing Date: 2013-06-04
Classification: G01S

Abstract:
1. A non-contact IC medium communication device comprising: a single antenna for obtaining, from each of separate read areas, identification information of a non-contact IC medium that exists within the read area and a signal level of a reception signal received from the non-contact IC medium, the identification information and the signal level being associated with each other; a control section for performing difference operation or division with respect to respective signal levels of reception signals from the separate read areas, for each of the identification information, to obtain a composite signal level, and for extracting the identification information whose composite signal level falls within a predetermined threshold range, wherein one of the separate read areas extends to a first side of a target area and another of the separate read areas extends to a second side of the target area; wherein the single antenna is configured to sense different ones of the separate read areas by shifting its directional orientation; wherein the read area is further provided in a center area which has the target area at a center thereof, and wherein the control section: