Samsung Electronics Co., Ltd.

Samsung Electro-mechanics Co., Ltd.

Si-Gyoung Koo

Ji-Hun Koo

Il-Jong Song

Woo-shik Kang

Young-Hoon Min

Pierre Dehaut

Kuang-Woo Nam

Jin-Hun Koo

Kyung-ho Park

Moutchkaev Artem

Kyung-Ho Park

Jin-Young Yang

Hyung-min Yoon

Woo-Shik Kang

Myung-Gun Kim

Artem Moutchkaev

Kyung-bo Park

A mobile terminal communicates with a base station to request channel allocation for RFID communication, receives a channel from the base station, and communicates with an RFID tag through the allocated channel.

RFID communication method and apparatus

A radio frequency identification (RFID) recorder for cancelling a leakage signal includes a digital unit calculating and storing an amplitude and a phase of the leakage signal, and a leakage cancellation circuit generating a leakage cancellation signal to cancel the leakage signal in response to a control of the digital unit.

RFID reader cancelling leakage signal

A Radio Frequency (RF) transmission method of a Radio Frequency Identification (RFID) reader using a plurality of channels is provided. The method includes: selecting at least part of the plurality of channels, measuring an RF power of each of the selected channels, determining a transmission environment of the RF according to a measurement determination, and modulating an RF signal according to the determined transmission environment.

RFID reader and RF transmission method thereof

A wireless terminal and a radio frequency identification system for providing additional information and a method of providing additional information using the wireless terminal and the radio frequency identification system. The wireless terminal includes: a tag reader reading tag data from a radio frequency identification tag; a controller generating an additional information request signal with respect to the read tag data; and a communication network interface transmitting the additional information request signal through a communication network and receiving additional information with respect to the additional information request signal. Since the controller of the wireless terminal controls the radio frequency identification reader by optimally setting the information required for determining the time point for the radio frequency identification reader tag to respond, and utilizing the stored address of the additional information providing server, the additional information can be efficiently provided.

Wireless terminal and RFID system for providing additional information and a method for providing additional information using wireless terminal and RFID system

Disclosed is a correlation method to adaptively operate in a time varying phase and a correlator thereof. A correlation method according to the present invention includes performing the first correlation according to a certain reference value and a certain reference interval for correlation of a received signal; calculating an average variation of the received signal through the result of performing the first correlation; deciding a new reference value for the second correlation through the average variation; performing the second correlation according to the new reference value and the reference interval; and selecting the maximum value among the result of performing the second correlation. Accordingly, plural references are decided considering variation of a response signal between tags and also separate plural references are decided considering bit variation of a response signal in the same tag, so that a digital signal can be ideally demodulated in the environment where signal phase variation occurs.

Correlation method to adaptively operate in time varying phase and correlator thereof

A method and system for avoiding tag conflict by identifying a RFID using a K-nary tree search. The tag conflict avoidance system includes a plurality of tags receiving a first signal, converting identification codes of the tags into predetermined codes according to the first signal, and outputting the converted codes as second signals. The tag conflict avoidance system also includes a reader outputting the first signal, receiving the second signals, and identifying the tags using the codes included in the second signals.

Tag conflict avoidance method and apparatus

A location tracking system and method are provided. The location tracking system includes a plurality of tags which receive a read signal and which output tag signals, a reader which transmits the read signal to the tags, receives the tag signals, and identifies tag IDs from the tag signals, and a data processing system which stores location information of the tags and determines the location of the reader by using the tag IDs received from the reader based on the location information.

Location tracking system and method

A system and method for providing geographical information to a driver of a vehicle using radio frequency identification (RFID). Also provided is a traffic information supply system using RFID. The geographical information supply system includes a reader provided near a road which outputs a first signal and receives a second signal generated in response to the first signal; a tag that senses the first signal, converts information on a destination into the second signal in response to the first signal, and outputs the second signal. Also included is a first control unit which extracts and outputs the destination information from the second signal, receives geographical information to the destination, and supplies the geographical information to a driver. A server generates the geographical information corresponding to the destination information and outputs the generated geographical information to the first control unit.

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Seoul, South Korea

Si-Gyoung Koo