| SKYETEK, INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20090201133 | Method For Enhancing Anti-Cloning Protection of RFID Tags - A method for determining validity of an RFID tag. The method includes probing the tag using a series of tag commands to trigger a corresponding series of tag responses, comparing the tag responses to tag reference data stored in a database, and repeating the probing and comparing operations to determine whether or not the tag is valid. | 08-13-2009 |
| 20090196373 | SYSTEM FOR INCREASING RFID TAG READER SENSITIVITY - A system for increasing the sensitivity of a receiver in an RFID tag reader. The system includes a directional coupler which receives the signal transmitted by the reader and which receives a backscatter signal from the RFID tag. The output of the directional coupler includes a transmit reference signal and a combined signal comprising the received signal and a transmit leakage signal. A first feedback loop generates an amplitude-compensated reference signal including a transmit signal component having the same amplitude as the transmit leakage signal. A second feedback loop adjusts the phase angle of the amplitude-compensated reference signal to a phase angle 180 degrees out-of-phase with the combined signal, to generate a canceling signal which effectively cancels out the transmit leakage signal component of the combined signal thereby improving the signal-to-noise ratio thereof. | 08-06-2009 |
| 20080297326 | Low Cost RFID Tag Security And Privacy System And Method - A method for provisioning security for an RFID tag. Initially, a random new tag ID is generated, and a new master key is generated based on an existing master key. Encrypted user data to be placed on the tag is generated utilizing the new tag ID as an IV and the new master key as input to an encryption algorithm. The new tag ID and the encrypted user data are then written to the tag. | 12-04-2008 |
| 20080291041 | RFID Tagged Item Trajectory And Location Estimation System And Method - A system for predicting a trajectory of an item tagged with an RFID tag. The system includes a network of communicatively coupled RFID readers, each having tag cache memory, and a search engine communicatively coupled with the tag caches in each of the readers. When a tag is within operating range of one of the readers, the tag is interrogated for its data and path information comprising timestamps of reader-tag interactions and related event data, and updated path information is stored in the tag cache memory. The search engine performs a search the tag cache memory in one of one of the readers to locate information corresponding to search criteria including characteristics of the tagged item sought. When the information corresponding to the search criteria is found, the path information is retrieved, and the trajectory of the item is extrapolated using a transit time of the item and average velocity of the item, determined from the timestamps and known distances between locations of each of the reader-tag interactions, along an expected path of the item. | 11-27-2008 |
| 20080290995 | SYSTEM AND METHOD FOR OPTIMIZING COMMUNICATION BETWEEN AN RFID READER AND AN RFID TAG - A method for optimizing communication between an RFID reader and an RFID tag. Initially, an RFID tag is detected, and the tag type is passively determined. An optimization goal is then selected. An optimal parameter set for communicating with the tag, based on the tag type and the optimization goal is then determined. The reader is then reconfigured using the optimal parameter set to communicate with the tag. | 11-27-2008 |
| 20080290994 | Method For Cryptographically Combining HF and UHF RFID Tags/Smart Cards To Create A Single Multi-Use Credential - A method for creating an enhanced RFID tag. A longer range RFID tag and a relatively shorter range credential are proximately co-located in the same container. The longer range RFID tag is cryptographically bound to the shorter range credential by storing, on the longer range tag, signed data which includes indicia of the shorter range tag. The longer range RFID tag requires authorization via an authentication server to grant access to data stored in the enhanced RFID tag. | 11-27-2008 |
