Patent application number | Description | Published |
20100013638 | APPARATUS AND METHOD FOR MANAGING PRODUCT DISTRIBUTION USING SECURITY TAG - Provided is a method and apparatus for managing a product distribution. The product distribution management method may include: reading a security key of a product from a security tag attached to the product; transferring the read security key to a security server; receiving, from the security server, first authentication information that is encrypted using the security key; receiving, from the security tag, second authentication information that is encrypted using the security key; and determining whether the security tag is duplicated, based on the first authentication information and the second authentication information. | 01-21-2010 |
20100017617 | RADIO FREQUENCY IDENTIFICATION (RFID) SECURITY APPARATUS HAVING SECURITY FUNCTION AND METHOD THEREOF - Disclosed are a radio frequency identification (RFID) security apparatus and a method thereof. According to the RFID security method, a secure tag reader performs determining an AES key using security information received from a secure tag and generating an output key using the determined AES key, decrypting AES data received from the secure tag using the output key, and encrypting data to be transmitted to the secure tag using the output key and transmitting the data, and a secure tag performs generating an output key using an AES key and security information, and transmitting the security information to a secure tag reader, encrypting data to be transmitted to the secure tag reader using the output key, and transmitting the encrypted data to the secure tag reader, and decrypting data received from the secure tag reader using the output key. | 01-21-2010 |
20100146273 | METHOD FOR PASSIVE RFID SECURITY ACCORDING TO SECURITY MODE - Provided are a method for passive radio frequency identification (RFID) security according to a security mode. An RFID tag transmits its own current security mode to a reader and the reader drives a security protocol depending on the current security mode of the RFID tag. Also, the reader grasps the ability of the tag and then the reader drive a protocol suitable for the ability through the security mode. | 06-10-2010 |
20100214067 | APPARATUS AND METHOD FOR LOCATING RFID TAG - Provided are a Radio Frequency Identification (RFID) tag and apparatus and method for locating a RFID tag without comparing arrival times of blink signals transmitted from the RFID tag in order to quickly trace a location of the RFID tag. The RFID tag includes a tag ID generator configured to generate a tag ID of the RFID tag, a blink generator configured to generate a plurality of sub-blink signals that form the blink signal, a sub-blink ID generator configured to generate sub-blink IDs for the generated sub-blink signals, a sub-blink ID inserter configured to insert the generated sub-blink IDs into the sub-blink signals, and a transmitter configured to transmit the blink signal having the tag ID and the sub-blink IDs. | 08-26-2010 |
20100253483 | FREIGHT CONTAINER CARGO-WORKING MANAGEMENT SYSTEM AND METHOD USING RFID TECHNOLOGY - A freight container cargo-working management system and method which can use Radio Frequency Identification (RFID) technology for displaying a cargo-working location of a container by recognizing an RFID tag adhered to a container vehicle passing through a warehouse entrance is provided. A freight container cargo-working management system including: an RFID tag to include freight information and be adhered to a container; an RFID reader to be installed at a warehouse entrance for recognizing the freight information included in the RFID tag; a cargo-working location information transmitter to be installed at the warehouse entrance for wirelessly transmitting cargo-working location information of the container corresponding to the freight information recognized by the RFID reader; and a cargo-working location display to be included in a vehicle with the container attached for displaying the cargo-working location information wirelessly transmitted from the cargo-working location information transmitter. | 10-07-2010 |
20100265070 | APPARATUS AND METHOD THAT PREVENT COLLISION OF TAGS IN RFID SYSTEM - Disclosed is an apparatus and method for preventing a collision in an RFID system, the method including: transmitting a Query to at least one tag, verifying whether an adjustment of a slot counter is required based on a response received from the tag, adjusting the slot counter when the verifying verifies that the adjustment of the slot counter is required, and transmitting the adjusted slot counter to the tag using a QueryAdjust regardless of whether a current frame is completed. | 10-21-2010 |
20100278289 | MULTISTAGE CHANNEL ESTIMATION METHOD AND APPARATUS - A multistage channel estimation method and apparatus is provided. The multistage channel estimation method includes: receiving a data frame to compensate for a distortion of the data frame based on a first channel estimation value associated with a corresponding section of the data frame; a first step of changing the corresponding section to calculate a second channel estimation value associated with the changed section; a second step of updating the first channel estimation value based on the calculated second channel estimation value; a third step of compensating for the distortion of the data frame based on the updated first channel estimation value to count a number of compensations; and repeating the first step through the third step, when the counted number of compensations does not match a predetermined numerical value. | 11-04-2010 |
20110037568 | RFID READER, RFID TAG, AND CONTROLLING METHOD THEREOF - Disclosed are an RFID reader, an RFID tag, and a controlling method thereof. The RFID tag may include a state information generator to generate state information of the RFID tag, a receiver to receive an activation command including reference state information of the RFID tag, and a controller to activate the RFID tag based on the state information and the reference state information. The RFID tag may be selectively activated according to an inner state of the RFID tag. | 02-17-2011 |
20110102151 | RFID READER AND METHOD FOR CONTROLLING GAIN THEREOF - Provided are an RFID reader and a method for controlling a gain thereof. The RFID reader includes an amplifier and an AGC circuit. The amplifier controls the gain of an RX signal, received from an RFID tag, in response to an AGC signal. The AGC circuit measures a signal level in an ante-preamble period of the RX signal and generates an AGC signal to control the gain of the RX signal, on the basis of the measured signal level. | 05-05-2011 |
20110140853 | RFID READER AND SIGNAL RECEIVING METHOD THEREOF - The present invention relates to an RFID reader and a signal receiving method thereof. The RFID reader according to one embodiment of the present invention down-converts transmission leakage signals introduced into a reader receiver and then suppresses them through a band stop filter in a low frequency band and up-converts them, thereby making it possible to effectively suppress the transmission leakage signals. | 06-16-2011 |
20110215908 | RADIO SECURITY LEADER CONTROLLING OPERATION MODE, AND RADIO SECURITY TAG SUPPORTING SECURITY MODE AND NORMAL MODE - Disclosed are a radio secure reader and a radio secure tag for supporting a secure mode and a normal mode. The radio secure reader for controlling an operation mode of the radio secure tag may include a reader modem to receive the operation mode from the radio secure tag, and a reader processing unit to identify the received operation mode as a normal mode or a secure mode, and to control the radio secure tag based on the identified operation mode. | 09-08-2011 |
20110279235 | RADIO FREQUENCY IDENTIFICATION (RFID) TAG AND INTERROGATOR FOR SUPPORTING NORMAL MODE AND SECURE MODE, AND OPERATION METHOD THEREOF - A Radio Frequency Identification (RFID) tag and an interrogator that support a normal mode and a secure mode, and operating methods thereof are provided. The RFID tag may notify the interrogator of whether a current operating mode of the RFID tag is the normal mode or the secure mode, may perform different inventory processes based on the current operating mode, and may perform an authentication of the interrogator. Here, the RFID tag and the interrogator may also perform a mutual authentication. | 11-17-2011 |
20120032844 | REAL-TIME LOCATION TRACKING APPARATUS AND METHOD USING GLOBAL POSITIONING SYSTEM (GPS) SIGNAL RELAY TAG - Real-time location tracking apparatus and method using a global positioning system (GPS) signal relay tag is provided. Here, a tag may receive a GPS signal and transmit the received GPS signal to a reader, and the reader may calculate a location of the tag, and thereby a real-time location tracking service may be provided. | 02-09-2012 |
20130087610 | TOTAL HISTORY MANAGEMENT SYSTEM AND METHOD USING RADIO FREQUENCY IDENTIFICATION (RFID) TAG AND BARCODE - Provided is a total history management system and method using a radio frequency indentification (RFID) tag and a barcode, which may efficiently manage individual products using a barcode and an RFID tag that may provide environmental information for management of the individual products. | 04-11-2013 |