Patent ID: 8686857
Filing Date: 2014-04-01
Classification: A61J,B01L,G01N,G06K,H04B

Abstract:
1. A wireless tag collective reading device for collectively reading tag information from articles equipped with wireless tags each emitting the tag information in response to an electromagnetic wave, the device comprising: a rack which comprises storage areas to store the articles; an antenna unit which applies the electromagnetic waves to the articles stored in the rack, and receives the tag information emitted from the wireless tags; an electromagnetic wave controller which controls directivity, intensity, and phase of the electromagnetic waves emitted from the antenna unit; a position controller which controls relative positions of the antenna unit and the rack; a reader which reads the tag information from a signal received by the antenna unit; an article detector which detects whether the articles are stored in the storage areas in the rack, respectively; a counter which counts a total number of the articles stored in the storage areas in the rack from a detection result of the article detector; and a checking unit which checks number of pieces of the tag information read by the reader against the number of the stored articles counted by the counter.