Patent ID: 8444054
Filing Date: 2013-05-21
Classification: G06K

Abstract:
1. An information access system for accessing information stored in a plurality of contactless information storage devices, the information access system comprising: a plurality of antennas arranged at respective different positions and used to communicate with the contactless information storage devices that pass through a given region substantially simultaneously; a first plurality of reader devices coupled to the plurality of respective antennas and adapted to communicate with the contactless information storage devices; and a control unit to control the first plurality of reader devices and transmit, to another apparatus, data received from the first plurality of reader devices, wherein the control unit controls a second plurality of reader devices one by one cyclically and in a time division manner to transmit an RF identification request signal toward the given region via the corresponding antenna, and controls the first plurality of reader devices to receive RF response signals from the contactless information storage devices that are transmitted in response to the RF identification request signal, wherein the second plurality of reader devices is a subset of the first plurality of reader devices and fewer than the first plurality of reader devices, the first plurality of reader devices receive RF response signals replying to the RF identification request signal transmitted in one transmission cycle by each one reader device of the second plurality of reader devices, from the contactless information storage devices via the plurality of respective antennas, then reproduce identifications, and then provide the reproduced identifications to the control unit, and the control unit receives the reproduced identifications, then processes redundant identifications in the received identifications so as to produce distinct identifications with no redundancy, and then provides the distinct identifications with no redundancy to the other apparatus.