Patents Represented by Attorney Turk IP Law, LLC
  • Patent number: 7969236
    Abstract: Embodiments of the invention describe a core circuit for a reference current generator circuit that biases a first transistor to source a first current and a second transistor parallel to the first transistor, biased to source a second current controlled by the first current. A third transistor is coupled parallel to the second transistor and sources a third current controlled by the first current. The third transistor has a different threshold voltage than a threshold voltage of the second transistor. A resistive component coupled to conduct the second current has a resistive voltage that is substantially equal to a voltage differential between the first transistor and the second transistor. The conducting current through the resistive component is substantially independent of temperature variations.
    Type: Grant
    Filed: May 23, 2009
    Date of Patent: June 28, 2011
    Assignee: Impinj, Inc.
    Inventors: John D. Hyde, Christopher J. Diorio
  • Patent number: 7961726
    Abstract: A framework capable of providing transparent handling of network traffic in close proximity networks such as home networks is provided. A single virtual network interface is exposed to users/applications on connected devices. A virtual network interface manager determines available physical network interfaces and switches to a different physical network interface or a different configuration on the same physical network interface in a transparent manner to the communicating application(s). This enables the framework to optimize network communications for the communicating applications, devices, and users based on predefined criteria, application requirements such as different data throughput, or changing environment conditions such as interference. Network communication operations are also simplified for users since they are no longer required to have the necessary knowledge for configuring physical network interfaces manually in response to changing conditions.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: June 14, 2011
    Assignee: Microsoft Corporation
    Inventors: Zhou Wang, Alain Gefflaut, Alexandre de Baynast, Arsalan Ahmad, Andreas Steinmetzler
  • Patent number: 7958360
    Abstract: The present invention includes a computer-implemented method and an Enterprise Resource Planning System (ERP). The method and system allows a user to enable an electronic signature approval process for modification of data in a transaction. The method includes accessing a table that corresponds with the transaction and adding a signature field having a property sheet to the table. The method also includes defining a select property in the property sheet with a select parameter. The select property configured to provide approval of modified data in the transaction upon entry of a valid electronic signature.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: June 7, 2011
    Assignee: Microsoft Corporation
    Inventors: Jacob Lind, Jan Lysgaard Jensen
  • Patent number: 7941551
    Abstract: Endpoints are enabled to facilitate desktop and/or application sharing in enhanced communication systems using Session Initiation Protocol (SIP) and Remote Desktop Protocol (RDP) protocols by tunneling RDP packets through an Interactive Connection Establishment (ICE) channel built-in within the Real-time Transport Protocol (RTP), thus allowing RDP sessions to traverse Network Address Translators (NATs) or firewalls.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: May 10, 2011
    Assignee: Microsoft Corporation
    Inventors: Sundar Anantharaman, Deepak Rao, Xin Guo, Dhruv Chopra
  • Patent number: 7920046
    Abstract: RFID readers, reader systems, and methods are provided for processing RFID tags through interruptions for antenna change or other reasons. If the reason for the interruption is an antenna change, the reader restarts processing the tags initializing any operational parameters. If the reason is other than an antenna change, the reader determines whether the operation is to be continued or to be restarted upon power up and proceeds accordingly.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: April 5, 2011
    Assignee: Impinj, Inc.
    Inventors: Ali Aiouaz, Paul Dietrich, Omar Khwaja
  • Patent number: 7917088
    Abstract: RFID tags, tag circuits, and methods are provided that reduce at least in part the distortion to received wireless signals, which is caused by interference in the environment. Two or more thresholds are used to digitize the received signal implemented by two or more demodulators. Multiple low pass and digital filters may be implemented with the demodulators, allowing removal of narrow pulses caused by the interference and reduction of beat tone amplitude.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: March 29, 2011
    Assignee: Impinj, Inc.
    Inventors: John D. Hyde, Kurt E. Sundstrom
  • Patent number: 7907899
    Abstract: Apparatus and method for generating a rectified output signal in a RFID tag from first and second alternating signals. A dual-terminal rectifier device has first and second input terminals to which the first and second alternating signals are applied, and further has a gate configured to form a conductive channel to electrically couple the first and second input terminals to the output terminal in response to a gate voltage. The dual-terminal rectifier device is configured to rectify a combination of the alternating input signals applied to the input terminals of the semiconductor device to generate a rectified output signal at an output terminal.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: March 15, 2011
    Assignee: Impinj, Inc.
    Inventor: Ronald A. Oliver
  • Patent number: 7872582
    Abstract: RFID tag circuits, tags, and methods are provided for using alternative memory lock bits. A pointer in tag memory is configured to point to one or the other of the alternative lock bits associated with a section of the memory for performing a function in response to a reader command. Upon receiving the reader command, the tag first checks the pointer and performs the function based on which lock bit(s) is selected.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: January 18, 2011
    Assignee: Impinj, Inc.
    Inventor: Christopher J. Diorio
  • Patent number: 7849101
    Abstract: The present invention includes a computer-implemented method and an Enterprise Resource Planning System (ERP). The method and system allows a user to enable an electronic signature approval process for modification of data in a transaction. The method includes accessing a table that corresponds with the transaction and adding a signature field having a property sheet to the table. The method also includes defining a select property in the property sheet with a select parameter. The select property configured to provide approval of modified data in the transaction upon entry of a valid electronic signature.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: December 7, 2010
    Assignee: Microsoft Corporation
    Inventors: Jacob Lind, Jan Lysgaard Jensen
  • Patent number: 7849206
    Abstract: Policy rules for a particular communication mode are adapted and implemented for other communication modes in a dynamic and/or automated manner. Organization level and/or personal policies for one communication mode are evaluated and modified as necessary for other communication modes, which may be integrated with each other or distinctly managed. Rules may be adapted based on user, groups, or policy types.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: December 7, 2010
    Assignee: Microsoft Corporation
    Inventors: Shawn Thomas, Steve Clagg, Gautam Pulla, Yamin Wang, Jeffrey Kay
  • Patent number: 7830262
    Abstract: RFID reader systems, readers, components, software and methods are provided for inventorying RFID tags. In some embodiments, a population of RFID tags begins being inventoried using a first set of communication parameters, and then continues using a second set of communication parameters. This way, some RFID tags can be inventoried faster, without missing tags that require a longer time to read.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: November 9, 2010
    Assignee: Impinj, Inc.
    Inventors: Christopher J. Diorio, Aanand Esterberg, David Ord, Michael H. Thomas, Kurt E. Sundstrom
  • Patent number: 7830322
    Abstract: An antenna system for a reader configured to interact with RFID tags includes one or more antenna elements electrically coupled to the reader for transmission and reception of RFID signals. In one embodiment the antenna elements include a conductive plate, a first elongate aperture in the plate oriented longitudinally in a first direction, a second elongate aperture in the plate oriented longitudinally in the first direction so as to be generally parallel with the first elongate aperture, a third elongate aperture in the plate oriented longitudinally in a second direction generally perpendicular to the first direction and configured to join the first and second apertures at about the longitudinal middle of the first aperture. Both “h”-shaped and “H”-shaped versions are provided. In another embodiment the antenna element comprises a rectangular slot.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: November 9, 2010
    Assignee: Impinj, Inc.
    Inventors: Ronald A. Oliver, Zhuohui Zhang, Ramone Antone Hecker
  • Patent number: 7808387
    Abstract: The present disclosure provides for a voltage reference circuit for Radio Frequency Identification (RFID) tag circuit. Such a circuit is formed in a substrate that is lightly doped with impurities of a first polarity. A first transistor having a first source connected to a ground, a first gate doped with impurities of the first polarity, and a first drain connected to the first gate at a reference node, a reference current source to provide a reference current to the reference node for generating a first reference voltage at the reference node, and an additional component for receiving the first reference voltage are disclosed.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: October 5, 2010
    Assignee: Impinj, Inc.
    Inventor: Jay A. Kuhn
  • Patent number: 7768248
    Abstract: Embodiments of the invention describe a reference current generator circuit having a core circuit that includes a first transistor in a first current path for conduct a first current and a second transistor in a second current path for conduct a second current. The second transistor has a threshold voltage that is different from the threshold voltage of the first transistor by at least 10%. The voltage differential between the first and second transistors generate a voltage across a resistive component coupled in series with the second transistor in the second current path.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: August 3, 2010
    Assignee: Impinj, Inc.
    Inventor: John D. Hyde
  • Patent number: 7768406
    Abstract: The present disclosure provides a power rectifier for a Radio Frequency Identification tag circuit. The power rectifier can be constructed from serially coupled rectifier stages. One of the rectifier stages includes a backflow reduction device or a bias preservation circuit, or both, at least one of which us controlled by a signal derived from a control signal source of the tag circuit.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: August 3, 2010
    Assignee: Impinj, Inc.
    Inventors: Charles J. T. Peach, John D. Hyde
  • Patent number: 7733227
    Abstract: Feasibility of a requested action by a reader is predetermined in an RFID tag based on an available tag power level. A pretest that is designed to consume artificially high levels of power is performed and the power level monitored to determine if a preset condition is met. The pretest may include activation of selected components such as a memory and associated support circuitry. If the preset condition is not met, the requested action is aborted and an error message transmitted to the reader.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: June 8, 2010
    Assignee: Impinj, Inc.
    Inventors: Alberto Pesavento, Vadim Gutnik, John D. Hyde
  • Patent number: 7720216
    Abstract: An acoustic pass through is provided in telephone handsets for sounds transmitted from a hands free operation speaker laid out underneath the handset. One or more cutouts in a middle portion of the handset in various shapes such as rectangular, round, elliptical, and similar allows enhanced sound quality when the speakerphone feature is used and flexibility in handset design.
    Type: Grant
    Filed: November 20, 2008
    Date of Patent: May 18, 2010
    Assignee: Microsoft Corporation
    Inventors: William G. Verthein, Stephen G. Lee
  • Patent number: D617320
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: June 8, 2010
    Assignee: Impinj, Inc.
    Inventor: Ronald A. Oliver
  • Patent number: D620484
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: July 27, 2010
    Assignee: Impinj, Inc.
    Inventor: Ronald A. Oliver
  • Patent number: D620928
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: August 3, 2010
    Assignee: Impinj, Inc.
    Inventor: Ronald A. Oliver