Patent ID: 8427281

Claim:
An apparatus for reading radio frequency identification (RFID) tag information configured to perform information transmission and reception with a plurality of RFID tag circuit elements having an IC circuit part storing information and a tag antenna connected to said IC circuit part, comprising: a first movement detecting portion configured to detect a moving state of said apparatus for reading RFID tag information; a transmitting portion configured to generate a reading command to acquire the information stored in said IC circuit part and to transmit the command to said RFID tag circuit element; and a first reading control portion configured to control the number of reading trial times per unit time using said reading command by said transmitting portion according to a detection result of said first movement detecting portion, said first movement detecting portion including a moving amount detecting portion configured to detect a moving amount of said apparatus for reading RFID tag information or a moving direction detecting portion configured to detect a moving direction of said apparatus for reading RFID tag information, wherein the apparatus for reading RFID tag information further comprises a correlation storage device configured to store and maintain a correlation between said moving amount or said moving direction and said number of reading trial times per unit time corresponding to the moving amount or the moving direction, and wherein on the basis of the correlation of said correlation store device, control is executed so that said number of reading trial times per unit time is realized corresponding to the moving amount detected by said moving amount detecting portion or the moving direction detected by said moving direction detecting portion by means of said first reading control portion.