Patent ID: 8362879
Filing Date: 2013-01-29
Classification: G06K,H04B

Abstract:
1. A reader-tag integrated radio frequency identification (RFID) apparatus, comprising: a tag means for communicating with an external reader, and transmitting a response signal and data corresponding to a signal transmitted from the external reader to the external reader; a reader means for selecting a channel for communicating between another reader and the reader-tag integrated RFID apparatus and for transmitting on the channel at a different delay time than the communicating by the tag means, and communicating with an external tag using a random value to minimize collision where a range of the random value changes responsive to a number of readers in an environment of the apparatus; and a controlling means for selectively activating one of the tag means and the reader means if necessary and operating in one of a listen before talk (LBT) mode and a random access mode where the mode of operating is responsive to operator selection.