Patent ID: 8482387

Claim:
A tag information processing apparatus which processes information acquired by carrying out an RFID tag reading process with respect to each of a first region and a second region which are different from each other and which have an overlapping region where the first region and the second region overlap each other, the tag information processing apparatus comprising: a first receiving section which receives first read information which is acquired by carrying out the RFID tag reading process with respect to the first region; a second receiving section which receives second read information which is acquired by carrying out the RFID tag reading process with respect to the second region; a movement direction judging section which judges a movement direction of the RFID tag in a case where the first read information and the second read information indicate that the RFID tag has moved out of a part of the first region which part does not overlap the second region; a detection frequency information acquisition section which acquires detection frequency information indicative of how many times at least one of first read information and second read information acquired by reading the RFID tag appears in plural sets of the first read information and the second read information which are acquired by carrying out the RFID tag reading process plural times and are then received by the first receiving section and the second receiving section; a movement judging section which judges, based on the detection frequency information acquired by the detection frequency information acquisition section, whether or not the RFID tag has moved out of both of the first region and the second region; an output judging section which judges whether or not the RFID tag whose movement direction has been judged by the movement direction judging section matches the RFID tag which has been judged, by the movement judging section, to have moved out of both of the first region and the second region; and an output section which outputs the movement direction judged by the movement direction judging section in a case where the output judging section judges that the RFID tag whose movement direction has been judged by the movement direction judging section matches the RFID tag which has been judged, by the movement judging section, to have moved out of both of the first region and the second region.