Patent application number | Description | Published |
20080211675 | RFID DEVICE WITH CHANGEABLE CHARACTERISTICS - An RFID device includes a first, relatively permanent portion and a second alterable or inactivatable portion. Upon the occurrence of some predetermined event, the second portion and/or its coupling to the first portion is physically altered, inactivating it. The first portion may itself be an antennaless RFID device that may be read at short range, and the second portion may be an antenna that, when coupled to the first portion, substantially increases the range at which the first portion may be read. The second portion may be configured to be altered or inactivated by any of a variety of predetermined events, such as involving physical, chemical or electrical forces, performed either on the RFID device, or upon an object to which the RFID device is coupled. | 09-04-2008 |
20080293455 | ENERGY SOURCE COMMUNICATION EMPLOYING SLOT ANTENNA - The invention relates to a wireless communication device that is coupled to an energy source, such as a battery, capacitor, or solar cell. The wireless communication device is coupled to an antenna of the energy source for wireless communication. The antenna receives communication signals from an interrogation reader or other communication device. The wireless communication device may be attached to a device or container for purposes such as communicating information regarding identification, manufacturing, tracking, and the like. The wireless communication device may also be coupled to the energy source for power. | 11-27-2008 |
20090027184 | CAPACITIVE PRESSURE SENSOR - A capacitive pressure sensor comprises a pair of conductive plates surrounding a compressible dielectric to form a capacitor. Changes in pressure create changes in the capacitance of the capacitor, which in turn may be measured to determine the changes in pressure. The pressure sensor may be constructed to be temperature and centripetal force compensated so that it may be positioned in a tire. A further embodiment uses the conductive plates to form a radiating element for the sensor such that it may wirelessly communicate with a remote interrogator. | 01-29-2009 |
20090153303 | MULTI-BAND WIRELESS COMMUNICATION DEVICE AND METHOD - The present invention relates to a wireless communication device, such as a transponder, that has a plurality of antennas for multi-frequency usage. The wireless communication device comprises a control system, communication electronics, memory, and the aforementioned antennas. A wireless communication device having a pole antenna may be used with one or more loop conductor antennas to achieve the desired operating frequencies. A wireless communication device having a dipole antenna may be coupled across a loop conductor antenna to provide different loop conductor configurations depending on the frequency. | 06-18-2009 |
20090256768 | WIRELESS COMMUNICATION DEVICE HAVING CONDUCTIVE ELEMENTS ANTENNA - An antenna coupled to a wireless communication device that is comprised of a series of conductive elements that form a conductor when placed under a force. The conductor is coupled to a wireless communication device to provide an antenna so that the wireless communication device is capable of communicating at an operating frequency defined by the length and construction of the conductor. The wireless communication device, through its communication using the conductor as an antenna, acts as an indicator of force to an interrogation reader when the wireless communication device is capable of communicating to the interrogation reader using the conductor as an antenna. | 10-15-2009 |
20100000076 | MANUFACTURING METHOD FOR A WIRELESS COMMUNICATION DEVICE AND MANUFACTURING APPARATUS - A method for manufacturing wireless communication devices for use in tracking or identifying other items comprises a number of cutting techniques that allow the size of the antenna for the wireless communication device. Further, the chip for the wireless communication device is nested so as to be flush with the surface of the substrate of the wireless communication device. Rollers cut the tabs that form the antenna elements. In a first embodiment, a plurality of rollers is used, each on effecting a different cut whose position may be phased so as to shorten or lengthen the antenna element. In a second embodiment, the rollers are independently positionable to shorten or lengthen the antenna element. | 01-07-2010 |
20100079287 | RFID DEVICE WITH CHANGEABLE CHARACTERISTICS - An RFID device includes a first, relatively permanent portion and a second alterable or inactivatable portion. Upon the occurrence of some predetermined event, the second portion and/or its coupling to the first portion is physically altered, inactivating it. The first portion may itself be an antennaless RFID device that may be read at short range, and the second portion may be an antenna that, when coupled to the first portion, substantially increases the range at which the first portion may be read. The second portion may be configured to be altered or inactivated by any of a variety of predetermined events, such as involving physical, chemical or electrical forces, performed either on the RFID device, or upon an object to which the RFID device is coupled. | 04-01-2010 |
20100089891 | METHOD OF PREPARING AN ANTENNA - A method for manufacturing wireless communication devices for use in tracking or identifying other items comprises a number of cutting techniques that allow the size of the antenna for the wireless communication device. Further, the chip for the wireless communication device is nested so as to be flush with the surface of the substrate of the wireless communication device. Rollers cut the tabs that form the antenna elements. In a first embodiment, a plurality of rollers are used, each one effecting a different cut whose position may be phased so as to shorten or lengthen the antenna element. In a second embodiment, the rollers are independently positionable to shorten or lengthen the antenna element. | 04-15-2010 |
20100095519 | APPARATUS FOR MANUFACTURING WIRELESS COMMUNICATION DEVICE - A method for manufacturing antenna elements for use with wireless communication devices comprises a number of cutting techniques that allow the size of the antenna elements to be adjusted. Rollers cut the tabs that form the antenna elements. In a first embodiment, a plurality of rollers are used, each one effecting a different cut whose position may be phased so as to shorten or lengthen the antenna element. In a second embodiment, the rollers are independently positionable to shorten or lengthen the antenna element. | 04-22-2010 |
20100151892 | REFLECTIVE COMMUNICATION USING RADIO-FREQUENCY DEVICES - A reflective communication system allows information from wireless communication devices, such as radio-frequency identification devices (RFID), to be reflectively communicated to a receiver. A transmitter at a known location transmits a communication signal to the wireless communication device. The wireless communication device modulates a data signal onto the communication signal to form a reflected data signal and reflects the reflected data signal to the receiver. The receiver receives the communication signal from the transmitter and can determine a distance between the wireless communication device and the transmitter based on data that includes a time delay between receipt of the communication signal and receipt of the reflected data signal by the receiver. The receiver can further determine the approximate location of the wireless communication device based on data that includes the known location of the transmitter and the determined distance between the wireless communication device and the transmitter. | 06-17-2010 |
20100156640 | OPTICAL CONTROL OF RFID CHIPS - A radio frequency identification (RFID) system includes an RFID chip and a photo-active material disposed in proximity to the RFID chip. The photo-active material provides energy—in the form of optical frequency radiation—to the RFID chip that affects (e.g., enhances or inhibits) the performance of the RFID chip and its sensitivity to a reader signal. An infrared (IR) light illuminating a polished backside of an RFID chip enhances or inhibits a read rate of the RFID chip according to an intensity of the IR light. A method for controlling operation of RFID devices includes illuminating a number of RFID devices by a radio frequency (RF) reader field, the reader field being below an operational threshold of the RFID devices, and optically illuminating a selected one of the RFID devices so that the selected RFID device becomes operational and communicates to the RFID reader. | 06-24-2010 |
20100218371 | MANUFACTURING METHOD FOR A WIRELESS COMMUNICATION DEVICE AND MANUFACTURING APPARATUS - A method for manufacturing wireless communication devices for use in tracking or identifying items comprises cutting techniques that allow the size of antenna elements for the wireless communication device to be adjusted. Rollers cut tabs that form the antenna elements. In one embodiment, a plurality of rollers are used, each one effecting a different cut whose position may be adjusted so as to shorten or lengthen the antenna element. In another embodiment, the rollers are independently positionable to shorten or lengthen the antenna element. A radiator may be configured to assess a capacitance of the antenna elements prior to cutting to determine an appropriate size for the antenna elements. | 09-02-2010 |
20100294842 | MEMORY DEVICE - A memory unit generates a corresponding output signal bearing data in response to an input signal. The memory unit includes a series of circuit stages configured to be triggered by the input signal at a first stage of the series, thereby causing a sequential triggering of stages along the series to a last stage to generate the output signal. The data is represented in time durations taken for each stage in the series to trigger a subsequent stage. In at least one embodiment, the data-bearing output signal is a temporally-encoded reflection of interrogation radiation received from an interrogation device. Each stage is configured to produce a detectable fluctuation in the output signal upon triggering of the stage such that the data in the output signal is represented by the time between fluctuations produced by each stage triggering a subsequent stage in the series. | 11-25-2010 |
20110063177 | WIRELESS COMMUNICATION DEVICE HAVING CONDUCTIVE ELEMENTS ANTENNA - An antenna coupled to a wireless communication device is comprised of a conductive component, such as a series of conductive elements, that forms a conductor if placed under a threshold force. The conductor is coupled to the wireless communication device so that the wireless communication device is capable of communicating at an operating frequency defined by the length and construction of the conductor. By communicating using the conductor as an antenna, the wireless communication device may provide an indication of force to an interrogation reader. Furthermore, a conductive support element, such as a tuning ring, may be used for communication as well as coupling the conductive component to the wireless communication device. Multiple conductive components may be coupled to the wireless communication device for communicating at multiple frequencies if placed under multiple threshold forces. | 03-17-2011 |
20120137506 | APPARATUS FOR FORMING A WIRELESS COMMUNICATION DEVICE - A method for manufacturing wireless communication devices for use in tracking or identifying items comprises cutting techniques that allow the size of antenna elements for the wireless communication device to be adjusted. Rollers cut tabs that form the antenna elements. In one embodiment, a plurality of rollers are used, each one effecting a different cut whose position may be adjusted so as to shorten or lengthen the antenna element. In another embodiment, the rollers are independently positionable to shorten or lengthen the antenna element. A radiator may be configured to assess a capacitance of the antenna elements prior to cutting to determine an appropriate size for the antenna elements. | 06-07-2012 |
20120222290 | METHOD AND SYSTEM FOR PREPARING WIRELESS COMMUNICATION CHIPS FOR LATER PROCESSING - A method for manufacturing wireless communication devices for use in tracking or identifying other items comprises a number of cutting techniques that allow the size of the antenna for the wireless communication device. Further, the chip for the wireless communication device is nested so as to be flush with the surface of the substrate of the wireless communication device. Rollers cut the tabs that form the antenna elements. In a first embodiment, a plurality of rollers is used, each one effecting a different cut whose position may be phased so as to shorten or lengthen the antenna element. In a second embodiment, the rollers are independently positionable to shorten or lengthen the antenna element. | 09-06-2012 |