Matches 1 - 23 out of 23


Match Document Document Title
US20080231454 Cargo Container Monitoring Device  
According to one embodiment, a cargo container monitoring system includes components located on a cargo ship for collecting cargo container status information for a plurality of cargo containers....
US20070109129 RFID READER SYSTEMS DETECTING PILOT TONE  
RFID tags are commanded to generate a pilot tone in their backscatter. When the backscattered pilot tone is received in the reader, the pilot tone is used to estimate the tag period/frequency....
US20060273907 RFID-based system and toy  
A system that includes a toy that includes a RFID reader capable of interacting with RFID tags and a communication interface for exchanging signals with a computerized entity; and a computer...
US20080018430 RFID system and reader writer  
A technology for detecting an RFID by a reader writer and transmitting harmonics for reading and writing the RFID timely without using an object detection sensor is provided. Using a nonlinearity...
US20090151150 MANUFACTURING METHOD FOR A CARD AND CARD OBTAINED BY SAID METHOD  
A method for manufacturing a dual interface card includes at least the following step: collocating multiple card support sheets one onto the other, some of these sheets showing holes, in order to...
US20070126583 Position locator for locating position of radio tag  
An antenna having directivity receives a harmonic signal generated from a radio tag, and position information corresponding to a direction and reception information indicating whether or not a...
US20070120675 SSB response method of RFID tag  
A single side band (SSB) response method of a radio frequency identification (RFID) tag receives a double side band (DSB) response signal whose frequency band is shifted from the RFID tag by...
US20090278688 RFID Devices Using RFID Circuits and Antennas Having Unmatched Frequency Ranges  
An RFID system in which RFID devices utilize RFID circuits and antennas having unmatched frequency ranges. The system includes an RFID interrogator having multiple interrogator antennas. Each...
US20080157973 System and Method for Processing Freight Using Rfid  
Provided are a system and method for processing freight using Radio Frequency identification (RFID). The freight processing system includes: an RFID label issuing block for issuing and attaching...
US20070126585 System integration of RFID and MIMO technologies  
An embodiment of the present invention provides a system including a plurality of radio frequency identification (RFID) tags and a reader. Each RFID tag of the plurality of RFID tags backscatter...
US20090102662 DEVICE AND PROCESS FOR MAGNETIC MATERIAL DETECTION IN ELECTRONIC ARTICLE SURVEILLANCE (EAS) ELECTROMAGNETIC SYSTEMS  
The present invention relates to a device with its related electronic circuit and to a detection process, targeted to detect any magnetic material moving around the antennas/sensors (6) used in...
US20070132555 Ultra low frequency tag and system  
Active high frequency radio tags have two major disadvantages: First, since the power consumption of any solid state circuit is proportional to the operating speed, active LF,HF and UHF tags...
US20070159303 Transponder and method for operating a transponder  
A transponder is disclosed that includes a receiving device for receiving a first signal at a first carrier frequency originating from an external transmitter, and a transmitting device for...
US20060158333 Uncontrolled passive radio frequency identification tag and sytem with 3-D positioning  
Passive radio frequency identification tags comprising a simple antenna and a circuit with a unique frequency-dependent response, in place of an RF-powered integrated circuit with control logic,...
US20090261976 PHASE COUPLER FOR ROTATING FIELDS  
This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent...
US20080273684 Systems and Methods for RFID-Based Access Management of Electronic Devices  
Disclosed are systems and methods for preventing unauthorized persons from using an electronic device within a facility. In such an embodiment, the system may include a plurality of RFID tags each...
US20080136643 APPARATUS FOR MANAGING POWER IN PASSIVE TAG AND METHOD THEREOF  
According to the present invention, the apparatus receives a radio frequency (RF) signal transmitted from the Radio Frequency Identification (RFID) reader, measures the strength of the received RF...
US20070126582 Dual bit encoding / decoding of RFID signal  
In some embodiments of a radio frequency identification (RFID) system, multiple bits of data may be encoded at the same time based on a frequency shift key (FSK) modulation technique using...
US20050104731 System and method for detecting eavesdropping device  
Disclosed are an eavesdropping device detecting system and a detecting method thereof. The eavesdropping device detects the eavesdropping device based on waves generated from the eavesdropping...
US20080100447 Coordination of Radio Frequency Communications Amongst Radio Frequency Identification (RFID) Readers  
Methods and apparatuses are described for reducing interference amongst frequency identification (RFID) readers operating within an interference range. Groups of frequencies from a range of...
US20070279188 System and method for interrogating a saw via direct physical connection  
Methods for determining the resonant frequency for interrogation of a resonant device include steps for generating and coupling interrogation pulses of various bandwidths to energize one or more...
US20090045958 SYSTEM AND METHOD FOR LOCATING PERSONAL ITEMS AND THE LIKE  
The invention is a system for locating and preventing the loss of personal items within a geographic zone. The system components are a personal portable homing center device a having a radio...
US20070096911 High temperature product identification system and method  
An object identification system and method includes a mechanical resonator that is configured to vibrate at one or more resonant vibration frequencies upon being excited with an electromagnetic...

Matches 1 - 23 out of 23