Electronics and Telecommunications Research Institute

Cisc Semiconductor Design+consulting Gmbh

Sewon Oh

Jongsuk Chae

Gilyoung Choi

David Tschische

Chanwon Park

Cheolsig Pyo

Josef Preishuber-Pfluegl

Donghan Lee

Jihoon Bae

Disclosed are an RFID tag for an RFID service and an RFID service method thereof. The present invention includes a tag storage unit including a TID memory and a user memory; and a tag controller that inserts and stores a content name field including content name information related to an item attached with the corresponding tag in the user memory, wherein the tag controller inserts the content name information in a tag response signal according to the request of a peripheral RFID interrogator and transmits it or permits an access to the memory in which the content name field is inserted. The present invention includes and stores the content name information in the identification data stored in the RFID tag to allow a user to select only the desired tag when the interrogator simultaneously recognizes a plurality of tags and receive the desired contents through the network, making it possible to give convenience to a user and reduce time and the using fee of the network.

RFID tag for RFID service and RFID service method thereof

Disclosed is an RFID interrogator having a collision type identification function and a control method thereof. It verifies whether or not a collision occurs in a received signal by analyzing data of a signal received from an RF communication unit and performs a corresponding collision resolution operation by diagnosing a collision type in accordance with a collision generation means between the corresponding RFID interrogator and other interrogators or a tag. Since all types of collisions that occur between the RFID interrogator and the tag can be identified, a reason for occurrence of the collisions can be rapidly recognized to cope with the reason for the collisions.

RFID interrogator having collision type identification function and control method thereof

As an RFID interrogator transmitting a command depending on a collision situation and a control method thereof, the RFID interrogator includes a collision diagnosis unit that analyzes data of a received signal received during a receive time in correspondence with a transmitted signal from an RF communication unit that can transmit and receive signal to and from one or more tag, verifies whether or not a collision occurs in the received signal, and diagnoses a collision type depending on an analysis result of the data of the received signal; and a collision resolution unit that can retransmit a command to the tag through the RF communication unit depending on the collision situation on the basis of whether or not occurrence of the collision or not and the collision type that are received from the collision diagnosis unit.

RFID interrogator retransmitting command depending on collision situation and control method thereof

As an RFID interrogator calculating an adaptive retransmission wait time and a control method thereof, the RFID interrogator includes a collision diagnosis unit that analyzes data on a received signal received during a receive time in correspondence with a transmitted signal from an RF communication unit that can transmit and receive signal to and from one or more tag, verifies whether or not a collision occurs in the received signal, and diagnoses a collision type depending on an analysis result of the data on the received signal; a situational command retransmission portion that determines whether or not the command is retransmitted on the basis of the occurrence of the collision and the collision type received from the collision diagnosis unit; and a random wait time calculation portion that calculates a random wait time for retransmitting the command.

Growing community of inventors

Daejeon, South Korea

Sewon Oh