Patents Assigned to X-Cyte, Inc.
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Patent number: 8274373Abstract: An enhanced backscatter RF-ID tag reader system and multiprotocol RF tag reader system is provided. In a multiprotocol mode, the system emits a non-stationary interrogation signal, and decodes a phase modulated backscatter signal by detecting a stronger phase component from quadrature phase representations or determining phase transition edges in a phase of a received signal. The RF tag reader system predicts or follows the phase of the backscatter signal, thereby avoiding interference from nulls in the received signal waveform due to the non-stationary interrogation signal, relative movement or environmental effects. An acoustic RF-ID tag detection system detects the reradiated signal corresponding to respective transformation of a signal in the tag. Detection of either type of RF-ID tags therefore is possible, and the absence of any tag or absence of any valid tag also determined.Type: GrantFiled: May 10, 2010Date of Patent: September 25, 2012Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 7741956Abstract: An enhanced backscatter RF-ID tag reader system and multiprotocol RF tag reader system is provided. In a multiprotocol mode, the system emits a non-stationary interrogation signal, and decodes a phase modulated backscatter signal by detecting a stronger phase component from quadrature phase representations or determining phase transition edges in a phase of a received signal. The RF tag reader system predicts or follows the phase of the backscatter signal, thereby avoiding interference from nulls in the received signal waveform due to the non-stationary interrogation signal, relative movement or environmental effects. An acoustic RF-ID tag detection system detects the reradiated signal corresponding to respective transformation of a signal in the tag. Detection of either type of RF-ID tags therefore is possible, and the absence of any tag or absence of any valid tag also determined.Type: GrantFiled: July 28, 2004Date of Patent: June 22, 2010Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 7715830Abstract: The present invention permits safeguarding of private data entered into a memory chip of a cell phone by permitting the cell phone owner to erase the data in a lost or stolen phone, using an preset erase code and erase command in the cell phone or the network base station, and disabling or erasing circuitry on the memory chip, preferably an EEPROM chip.Type: GrantFiled: April 21, 2005Date of Patent: May 11, 2010Assignee: X-Cyte, Inc.Inventor: Keith Cocita
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Patent number: 7394878Abstract: Methods and apparatus for determining a dominant frequency contained in a multi-frequency analog signal. An apparatus includes a first matched filter pair and a second a second matched filter pair. Both the first matched filter pair and the second matched filter pair are configured to receive in-phase (I-phase) and quadrature-phase (Q-phase) digital samples of a digitized multi-frequency analog signal. The summed magnitudes of outputs of the first and second matched filter pairs provide an indication of a dominant frequency represented in the digital samples. The first matched filter pair may include first and second matched filters, where the first matched filter includes a multiplier operable to multiply, on a sample-by-sample basis, a sample by a coefficient. A sample comprises an n-bit digital representation of either the I-phase amplitude or the Q-phase amplitude at a given instant. The coefficients are the terms required to complete the matching functions (e.g. 1-bit Walsh coefficients).Type: GrantFiled: June 28, 2004Date of Patent: July 1, 2008Assignee: X-Cyte, Inc.Inventors: Peter J. Nysen, Paul A. Nysen
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Patent number: 7233791Abstract: The present invention permits safeguarding of private data entered into a memory chip of a cell phone by permitting the cell phone owner to erase the data in a lost or stolen phone, using an preset erase code and erase command in the cell phone or the network base station, and disabling or erasing circuitry on the memory chip, preferably an EEPROM chip. Further, a user of the cell phone may obtain information of a person or entity, via a cellular communications network, by dialing a directory assistance number and requesting information associated with the name of the person or entity the user has requested information of. The information may be provided to the user in the form of a vcard and may include, among other information, telephone and facsimile numbers, mailing addresses, instant messaging addresses, maps or directions, digital photos or videos, and the like.Type: GrantFiled: July 19, 2005Date of Patent: June 19, 2007Assignee: X-Cyte, Inc.Inventors: Alicia Marie Gilbert, Keith Cocita
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Patent number: 7132778Abstract: An acoustic wave identification transponder device, having a substrate, an electroacoustic transfer generating an acoustic wave in said substrate and a set of encoding elements disposed in a path of the acoustic wave for modifying the acoustic wave, having elements which reflect portions of the acoustic wave having a component orthogonal to the incident wave. The reflectors may be, for example, trackchangers or reflective arrays compressors (RAC). The wave may be phase-amplitude modulated for increased efficiency expressed in bits per tap. Such phase amplitude modulation is preferably imposed by partial beam width phase delay elements disposed within an acoustic beam path.Type: GrantFiled: August 20, 2003Date of Patent: November 7, 2006Assignee: X-Cyte, Inc.Inventors: Paul A. Nysen, Halvor Skeie
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Patent number: 7054624Abstract: The present invention permits safeguarding of private data entered into a memory chip of a cell phone by permitting the cell phone owner to erase the data in a lost or stolen phone, using an preset erase code and erase command in the cell phone or the network base station, and disabling or erasing circuitry on the memory chip, preferably an EEPROM chip.Type: GrantFiled: April 1, 2003Date of Patent: May 30, 2006Assignee: X-CYTE, Inc.Inventor: Keith Cocita
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Patent number: 7023323Abstract: A system and method for interrogating a passive acoustic transponder, producing a transponder signal having characteristic set of signal perturbations in response to an interrogation signal, comprising a signal generator, producing an interrogation signal having a plurality of differing frequencies; a receiver, for receiving the transponder signal; a mixer, for mixing the transponder signal with a signal corresponding to the interrogation signal, to produce a mixed output; an integrator, integrating the mixed output to define an integrated phase-amplitude response of the received transponder signal; and an analyzer, receiving a plurality of integrated phase-amplitude responses corresponding to the plurality of differing frequencies, for determining the characteristic set of signal perturbations of the passive acoustic transponder.Type: GrantFiled: October 14, 2003Date of Patent: April 4, 2006Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6995654Abstract: An apparatus and method for determining the location of an item from a plurality of like items, using matching paging devices and passive transponder tags on each item. The unique code number (IC) of the tag is programmed into its matching paging device. The paging device operates remote control location functions. The tags are preferably passive acoustic wave transponders.Type: GrantFiled: December 15, 2000Date of Patent: February 7, 2006Assignee: X-Cyte, Inc.Inventor: Paul Nysen
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Patent number: 6950009Abstract: An enhanced backscatter RF-ID tag reader system and multiprotocol RF tag reader system is provided. In a multiprotocol mode, the system emits a non-stationary interrogation signal, and decodes a phase modulated backscatter signal by detecting a stronger phase component from quadrature phase representations or determining phase transition edges in a phase of a received signal. The RF tag reader system predicts or follows the phase of the backscatter signal, thereby avoiding interference from nulls in the received signal waveform due to the non-stationary interrogation signal, relative movement or environmental effects. An acoustic RF-ID tag detection system detects the reradiated signal corresponding to respective transformation of a signal in the tag. Detection of either type of RF-ID tags therefore is possible, and the absence of any tag or absence of any valid tag also determined.Type: GrantFiled: June 17, 2003Date of Patent: September 27, 2005Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6775616Abstract: A system and method for determining a location. The system employs encoded information devices dispersed through the environment, each having a non-unique code associated therewith. The codes from the encoded information devices are acquired as a reading device passes nearby, and stored. The codes from a proximate set of information devices are correlated with a map or mapping relation to determine one or more consistent positions within the environment. The information devices are preferably passive acoustic wave transponders, and the mapping relation may be a pseudorandom sequence or a defined map.Type: GrantFiled: August 20, 2003Date of Patent: August 10, 2004Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6633226Abstract: A system and method for interrogating a passive acoustic transponder, producing a transponder signal having characteristic set of signal perturbations in response to an interrogation signal, comprising a signal generator, producing an interrogation signal having a plurality of differing frequencies; a receiver, for receiving the transponder signal; a mixer, for mixing the transponder signal with a signal corresponding to the interrogation signal, to produce a mixed output; an integrator, integrating the mixed output to define an integrated phase-amplitude response of the received transponder signal; and an analyzer, receiving a plurality of integrated phase-amplitude responses corresponding to the plurality of differing frequencies, for determining the characteristic set of signal perturbations of the passive acoustic transponder.Type: GrantFiled: February 10, 1999Date of Patent: October 14, 2003Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6611758Abstract: A system and method for determining a location. The system employs encoded information devices dispersed through the environment, each having, a non-unique code associated therewith. The codes from the encoded information devices are acquired as a reading device passes nearby, and stored. The codes from a proximate set of information devices are correlated with a map or mapping relation to determine one or more consistent positions within the environment. The information devices are preferably passive acoustic wave transponders and the mapping relation may be a pseudorandom sequence or a defined map.Type: GrantFiled: July 22, 2002Date of Patent: August 26, 2003Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6611224Abstract: A backscatter transponder interrogator, comprising a transmitter, emitting an interrogation signal for interacting with a backscatter transponder within an interrogation field, a plurality of antennas, each having a different and complementary property, such that a backscatter response from a backscatter transponder is likely to be preferentially received by at least one of said at least two antennas, a receiver, selecting an output from a selected antenna, and demodulating the backscatter response to produce an information signal, and a digitally controlled oscillator, producing an output controlling said transmitter and employed by said receiver to demodulate the backscatter response. The interrogator may have a plurality of transmit antennas. The antennas may have respectively different polarization properties, e.g., horizontal and vertical polarization. The interrogator may implement null steered polarization cancellation to distinguish between backscatter transponders within the interrogation field.Type: GrantFiled: May 14, 2002Date of Patent: August 26, 2003Assignee: X-Cyte, Inc.Inventors: Paul A. Nysen, Halvor Skeie
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Patent number: 6580358Abstract: An enhanced backscatter RF-ID tag reader system and multiprotocol RF tag reader system is provided. In a multiprotocol mode, the system emits a non-stationary interrogation signal, and decodes a phase modulated backscatter signal by detecting a stronger phase component from quadrature phase representations or determining phase transition edges in a phase of a received signal. The RF tag reader system predicts or follows the phase of the backscatter signal, thereby avoiding interference from nulls in the received signal waveform due to the non-stationary in terrogation signal, relative movement or environmental effects. An acoustic RF-ID tag detection system detects the reradiated signal corresponding to respective transformation of a signal in the tag. Detection of either type of RF-ID tags therefore is possible, and the absence of any tag or absence of any valid tag also determined.Type: GrantFiled: May 17, 2002Date of Patent: June 17, 2003Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6531957Abstract: An enhanced backscatter RF-ID tag reader system and multiprotocol RF tag reader system is provided. In a multiprotocol mode, the system emits a non-stationary interrogation signal, and decodes a phase modulated backscatter signal by detecting a stronger phase component from quadrature phase representations or determining phase transition edges in a phase of a received signal. The RF tag reader system predicts or follows the phase of the backscatter signal, thereby avoiding interference from nulls in the received signal waveform due to the non-stationary interrogation signal, relative movement or environmental effects. An acoustic RF-ID tag detection system detects the reradiated signal corresponding to respective transformation of a signal in the tag. Detection of either type of RF-ID tags therefore is possible, and the absence of any tag or absence of any valid tag also determined.Type: GrantFiled: May 17, 2002Date of Patent: March 11, 2003Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6433671Abstract: An enhanced backscatter RF-ID tag reader system and multiprotocol RF tag reader system is provided. In a multiprotocol mode, the system emits a non-stationary interrogation signal, and decodes a phase modulated backscatter signal by detecting a stronger phase component from quadrature phase representations or determining phase transition edges in a phase of a received signal. The RF tag reader system predicts or follows the phase of the backscatter signal, thereby avoiding interference from nulls in the received signal waveform due to the non-stationary interrogation signal, relative movement or environmental effects. An acoustic RF-ID tag detection system detects the reradiated signal corresponding to respective transformation of a signal in the tag. Detection of either type of RF-DD tags therefore is possible, and the absence of any tag or absence of any valid tag also determined.Type: GrantFiled: August 18, 2000Date of Patent: August 13, 2002Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6424916Abstract: A system and method for determining a location. The system employs encoded information devices dispersed through the environment, each having a non-unique code associated therewith. The codes from the encoded information devices are acquired as a reading device passes nearby, and stored. The codes from a proximate set of information devices are correlated with a map or mapping relation to determine one or more consistent positions within the environment. The information devices are preferably passive acoustic wave transponders, and the mapping relation may be a pseudorandom sequence or a defined map.Type: GrantFiled: July 10, 2001Date of Patent: July 23, 2002Assignee: X-Cyte, Inc.Inventor: Paul A. Nysen
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Patent number: 6388360Abstract: An acoustic wave identification transponder device, having a substrate, an electroacoustic transducer generating an acoustic wave in said substrate and a set of encoding elements disposed in a path of the acoustic wave for modifying the acoustic wave, having elements which reflect portions of the acoustic wave having a component orthogonal to the incident wave. The reflectors may be, for example, trackchangers or reflective arrays compressors (RAC). The wave may be phase-amplitude modulated for increased efficiency expressed in bits per tap. Such phase amplitude modulation is preferably imposed by partial beam width phase delay elements disposed within an acoustic beam path.Type: GrantFiled: May 25, 2000Date of Patent: May 14, 2002Assignee: X-Cyte, Inc.Inventors: Paul A. Nysen, Halvor Skeie
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Patent number: 6259991Abstract: A system and method for determining a location. The system employs encoded information devices dispersed through the environment, each having a non-unique code associated therewith. The codes from the encoded information devices are acquired as a reading device passes nearby, and stored. The codes from a proximate set of information devices are correlated with a map or mapping relation to determine one or more consistent positions within the environment. The information devices are preferably passive acoustic wave transponders, and the mapping relation may be a pseudorandom sequence or a defined map.Type: GrantFiled: February 10, 1999Date of Patent: July 10, 2001Assignee: X-Cyte Inc.Inventor: Paul A. Nysen