Patents by Inventor Pattabhiraman Krishna

Pattabhiraman Krishna has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10025959
    Abstract: Systems and methods for reading Radio Frequency Identified (RFID) tags. In an embodiment, an enclosure having, within it, an antenna and processor is provided. The processor may be configured to record tag observations for tag identifiers received by the antenna from RFID tags. For one or more time intervals, tag observations may be identified which satisfy a tag filter, and a confidence that RFID tags satisfying the tag filter were in the field of view of the antenna during the time interval may be computed based on the identified tag observations. According to an embodiment, reports for tag filters may be then generated using the computed confidences, and these reports may be transmitted to an external system over a network.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 17, 2018
    Assignee: Quake Global, Inc.
    Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
  • Patent number: 10019665
    Abstract: A radio frequency identification wristband for attaching to a patient that has a band, a wristband housing attached to or integral with said band, one or more radio frequency identification tag(s) or tag inlay(s), an insulator material, wherein said wristband housing is adhered to said radio frequency identification tag or tag inlay, said radio frequency identification tag or tag inlay is adhered to an isolator material, and wherein said insulator material is nearest to the skin of the patient and insulates the radio frequency identification tag or tag inlay from the patient's skin.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: July 10, 2018
    Assignee: QUAKE GLOBAL, INC.
    Inventors: Pattabhiraman Krishna, Scott Barvick, John W. Thorburn
  • Publication number: 20170109554
    Abstract: Systems and methods for reading Radio Frequency Identified (RFID) tags. In an embodiment, an enclosure having, within it, an antenna and processor is provided. The processor may be configured to record tag observations for tag identifiers received by the antenna from RFID tags. For one or more time intervals, tag observations may be identified which satisfy a tag filter, and a confidence that RFID tags satisfying the tag filter were in the field of view of the antenna during the time interval may be computed based on the identified tag observations. According to an embodiment, reports for tag filters may be then generated using the computed confidences, and these reports may be transmitted to an external system over a network.
    Type: Application
    Filed: December 29, 2016
    Publication date: April 20, 2017
    Inventors: Scott BARVICK, Pattabhiraman KRISHNA, Hiroto SHIBUYA
  • Publication number: 20170039466
    Abstract: A radio frequency identification wristband for attaching to a patient that has a band, a wristband housing attached to or integral with said band, one or more radio frequency identification tag(s) or tag inlay(s), an insulator material, wherein said wristband housing is adhered to said radio frequency identification tag or tag inlay, said radio frequency identification tag or tag inlay is adhered to an isolator material, and wherein said insulator material is nearest to the skin of the patient and insulates the radio frequency identification tag or tag inlay from the patient's skin.
    Type: Application
    Filed: October 24, 2016
    Publication date: February 9, 2017
    Inventors: Pattabhiraman KRISHNA, Scott BARVICK, John W. THORBURN
  • Patent number: 9536117
    Abstract: Systems and methods for reading Radio Frequency Identified (RFID) tags. In an embodiment, an enclosure having, within it, an antenna and processor is provided. The processor may be configured to record tag observations for tag identifiers received by the antenna from RFID tags. For one or more time intervals, tag observations may be identified which satisfy a tag filter, and a confidence that RFID tags satisfying the tag filter were in the field of view of the antenna during the time interval may be computed based on the identified tag observations. According to an embodiment, reports for tag filters may be then generated using the computed confidences, and these reports may be transmitted to an external system over a network.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: January 3, 2017
    Assignee: Quake Global, Inc.
    Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
  • Patent number: 9477922
    Abstract: A radio frequency identification wristband for attaching to a patient that has a band, a wristband housing attached to or integral with said band, one or more radio frequency identification tag(s) or tag inlay(s), an insulator material, wherein said wristband housing is adhered to said radio frequency identification tag or tag inlay, said radio frequency identification tag or tag inlay is adhered to an isolator material, and wherein said insulator material is nearest to the skin of the patient and insulates the radio frequency identification tag or tag inlay from the patient's skin.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: October 25, 2016
    Assignee: QUAKE GLOBAL, INC.
    Inventors: Pattabhiraman Krishna, Scott Barvick, John W. Thorburn, Jr.
  • Publication number: 20140054379
    Abstract: Systems and methods for reading Radio Frequency Identified (RFID) tags. In an embodiment, an enclosure having, within it, an antenna and processor is provided. The processor may be configured to record tag observations for tag identifiers received by the antenna from RFID tags. For one or more time intervals, tag observations may be identified which satisfy a tag filter, and a confidence that RFID tags satisfying the tag filter were in the field of view of the antenna during the time interval may be computed based on the identified tag observations. According to an embodiment, reports for tag filters may be then generated using the computed confidences, and these reports may be transmitted to an external system over a network.
    Type: Application
    Filed: October 29, 2013
    Publication date: February 27, 2014
    Applicant: Quake Global, Inc.
    Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
  • Patent number: 8570156
    Abstract: A Pluggable small form-factor UHF Radio Frequency ID reader having in an enclosure: a host CPU; volatile memory; non-volatile memory; power inputs; digital circuitry comprising the CPU and supporting components; analog circuitry comprising power and Radio Frequency components; one or more antennas; networking components; user interface components; debug and test components; WiFi subsystem; Radio Frequency ID subsystem; wherein said enclosure comprises thermal dissipation capacity, radio frequency transparency with WiFi and Radio Frequency ID antennas, provides protection from physical and radiofrequency forces, is mountable to an AC outlet and can also be mounted flush to a solid wall or surface or at an angle to a solid wall or surface, connectable to PoE or DC inputs, having a capacity to convert AC/DC current; Radio Frequency ID setting configurable, employs intelligent filtering and smoothing algorithms and transmits only relevant summarized information back over a network, and permits firmware management
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: October 29, 2013
    Assignee: Quake Global, Inc.
    Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
  • Publication number: 20120056720
    Abstract: A Pluggable small form-factor UHF Radio Frequency ID reader having in an enclosure: a host CPU; volatile memory; non-volatile memory; power inputs; digital circuitry comprising the CPU and supporting components; analog circuitry comprising power and Radio Frequency components; one or more antennas; networking components; user interface components; debug and test components; WiFi subsystem; Radio Frequency ID subsystem; wherein said enclosure comprises thermal dissipation capacity, radio frequency transparency with WiFi and Radio Frequency ID antennas, provides protection from physical and radiofrequency forces, is mountable to an AC outlet and can also be mounted flush to a solid wall or surface or at an angle to a solid wall or surface, connectable to PoE or DC inputs, having a capacity to convert AC/DC current; Radio Frequency ID setting configurable, employs intelligent filtering and smoothing algorithms and transmits only relevant summarized information back over a network, and permits firmware management
    Type: Application
    Filed: August 25, 2011
    Publication date: March 8, 2012
    Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
  • Publication number: 20120056719
    Abstract: A radio frequency identification wristband for attaching to a patient that has a band, a wristband housing attached to or integral with said band, one or more radio frequency identification tag(s) or tag inlay(s), an insulator material, wherein said wristband housing is adhered to said radio frequency identification tag or tag inlay, said radio frequency identification tag or tag inlay is adhered to an isolator material, and wherein said insulator material is nearest to the skin of the patient and insulates the radio frequency identification tag or tag inlay from the patient's skin.
    Type: Application
    Filed: August 25, 2011
    Publication date: March 8, 2012
    Inventors: Pattabhiraman Krishna, Scott Barvick, John W. Thorburn, JR.
  • Patent number: 7817014
    Abstract: A system and method of scheduling RFID tag interrogations by a plurality of RFID readers so as to mitigate the effects of interference within an RFID environment in which the readers are deployed, and to enhance the efficiency and reliability of the overall RFID system. The system includes a plurality of RFID receivers for receiving RFID tag data, a plurality of RFID tag interrogators for transmitting RF interrogation signals for interrogating RFID tags, and a controller for providing to at least one interrogator, at least one receiver, and at least one tag, a parameter associated with operational characteristics of the interrogator, the receiver, and the tag, respectively. The interrogator, the receiver, and the tag are operative, in response to receipt of the respective parameter, to modify its operational characteristics in accordance with the respective parameter, thereby avoiding interference at the receivers and the tags.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: October 19, 2010
    Assignee: Reva Systems Corporation
    Inventors: Pattabhiraman Krishna, Jeffrey H. Fischer, David J. Husak, Robert A. Stephenson
  • Patent number: 7692532
    Abstract: A system and method for monitoring and characterizing various sources of RF interference within an RFID environment, and for adjusting the operational characteristics of an array of RFID readers within the system based on these interference characterizations. The system examines the received transmissions from readers in the network by controlling a calibration cycle or while they are operating as interrogators to determine interference parameters, and to verify the operation of the readers in the array. The system also examines outside sources of interference, and signal dependent interference. The interference characterization can also be estimated from a combination of calculations and co-monitoring.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: April 6, 2010
    Assignee: Reva Systems Corporation
    Inventors: Jeffrey H. Fischer, David J. Husak, Pattabhiraman Krishna
  • Patent number: 7667572
    Abstract: An architecture of an RFID system that facilitates the accessing of RFID tag data within an RFID environment. The architecture includes a plurality of RFID readers, each reader being operative to transmit a first RF signal for scanning at least one RFID tag disposed within an RF coverage region associated with the reader, and to receive at least one second RF signal including tag data in response to the scanning of the tag. The architecture further includes at least one host computer operative to execute at least one client application, and at least one controller/processor communicably coupled to the plurality of readers and the at least one host computer. The controller/processor is operative to control operation of the plurality of readers, to process the tag data received by the plurality of readers, and to provide the processed tag data to the at least one host computer for use by the at least one client application executing thereon.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 23, 2010
    Assignee: Reva Systems Corporation
    Inventors: David J. Husak, Robert A. Stephenson, Michael Grady, Scott Barvick, Pattabhiraman Krishna, Chilton L. Cabot, Jeffrey H. Fischer
  • Patent number: 7667575
    Abstract: A system and method of determining locations of one or more RFID tags within an RFID environment. The system includes a plurality of RFID readers, each operative to transmit and receive RF signals for scanning a tag disposed within an RF coverage region associated with the reader, and for receiving tag data in response to the scanning of the tag. A plurality of sub-locations is determined within the environment, each corresponding to at least a portion of at least one of a plurality of RF coverage regions associated with the readers. The sub-locations are mapped to a plurality of predefined locations within the environment. A reader scans a tag, and receives tag scan data from the tag in response to the scanning of the tag. The tag scan data includes a tag identifier associated with the scanned tag. The tag scan data is mapped to the sub-locations based on the RF coverage region associated with the reader.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 23, 2010
    Assignee: Reva Systems Corporation
    Inventors: David J. Husak, Pattabhiraman Krishna, Peter Spreadborough, Jeffrey H. Fischer
  • Publication number: 20090256683
    Abstract: A system and method that facilitates the configuration and control of components of a radio frequency identification (RFID) system, taking into account how the RFID system components are associated with one or more physical locations within an environment in which the RFID system is deployed. The RFID system can be controlled by obtaining a representation of the physical space. Next, at least one region of interest is specified in the representation of the physical space. An interrogation zone is then specified in the representation of the physical space, in which the interrogation zone corresponds to the data reader. Next, at least one overlap region of the interrogation zone and the region of interest is specified. Information is then stored, including the representation, and the interest region, the interrogation zone, and/or the overlap region. Operation of the data reader is controlled as a function of the stored information.
    Type: Application
    Filed: June 22, 2009
    Publication date: October 15, 2009
    Applicant: REVA SYSTEMS CORPORATION
    Inventors: Robert A. Stephenson, Michael Grady, Scott Barvick, David J. Husak, Lin Zhou, Nirav R. Shah, Pattabhiraman Krishna, Jeffrey H. Fischer, Chilton L. Cabot
  • Patent number: 7567179
    Abstract: A system and method that facilitates the configuration and control of components of an RFID system, taking into account how the RFID system components are associated with one or more physical locations within an environment in which the RFID system is deployed. A user provides information specifying associations between the system components and the physical locations within the environment to obtain visual representations of configuration data generated therefrom with reference to a facility view, an RF coverage view, and a location view of the data. The facility view serves as a reference plane for placement and orientation of antennas associated with RFID readers, location benchmark tags, and the physical locations of interest. After each antenna is placed and oriented on the facility view, an estimate of the size and shape of the RF interrogation zone of each antenna is computed, and representations of the RF interrogation zones are provided on the facility view to obtain the RF coverage view of the data.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: July 28, 2009
    Assignee: Reva Systems Corporation
    Inventors: Robert A. Stephensen, Michael Grady, Scott Barvick, David J. Husak, Lin Zhou, Nirav R. Shah, Pattabhiraman Krishna, Jeffrey H. Fischer, Chilton L. Cabot
  • Publication number: 20070099623
    Abstract: A system and method that facilitates the configuration and control of components of an RFID system, taking into account how the RFID system components are associated with one or more physical locations within an environment in which the RFID system is deployed. A user provides information specifying associations between the system components and the physical locations within the environment to obtain visual representations of configuration data generated therefrom with reference to a facility view, an RF coverage view, and a location view of the data. The facility view serves as a reference plane for placement and orientation of antennas associated with RFID readers, location benchmark tags, and the physical locations of interest. After each antenna is placed and oriented on the facility view, an estimate of the size and shape of the RF interrogation zone of each antenna is computed, and representations of the RF interrogation zones are provided on the facility view to obtain the RF coverage view of the data.
    Type: Application
    Filed: October 16, 2006
    Publication date: May 3, 2007
    Inventors: Robert Stephensen, Michael Grady, Scott Barvick, David Husak, Lin Zhou, Nirav Shah, Pattabhiraman Krishna, Jeffrey Fischer, Chilton Cabot
  • Publication number: 20060170565
    Abstract: A system and method of determining locations of one or more RFID tags within an RFID environment. The system includes a plurality of RFID readers, each operative to transmit and receive RF signals for scanning a tag disposed within an RF coverage region associated with the reader, and for receiving tag data in response to the scanning of the tag. A plurality of sub-locations is determined within the environment, each corresponding to at least a portion of at least one of a plurality of RF coverage regions associated with the readers. The sub-locations are mapped to a plurality of predefined locations within the environment. A reader scans a tag, and receives tag scan data from the tag in response to the scanning of the tag. The tag scan data includes a tag identifier associated with the scanned tag. The tag scan data is mapped to the sub-locations based on the RF coverage region associated with the reader.
    Type: Application
    Filed: July 29, 2005
    Publication date: August 3, 2006
    Inventors: David Husak, Pattabhiraman Krishna, Peter Spreadborough, Jeffrey Fischer
  • Publication number: 20060022815
    Abstract: A system and method for monitoring and characterizing various sources of RF interference within an RFID environment, and for adjusting the operational characteristics of an array of RFID readers within the system based on these interference characterizations. The system examines the received transmissions from readers in the network by controlling a calibration cycle or while they are operating as interrogators to determine interference parameters, and to verify the operation of the readers in the array. The system also examines outside sources of interference, and signal dependent interference. The interference characterization can also be estimated from a combination of calculations and co-monitoring.
    Type: Application
    Filed: July 29, 2005
    Publication date: February 2, 2006
    Inventors: Jeffrey Fischer, David Husak, Pattabhiraman Krishna
  • Publication number: 20060022800
    Abstract: A system and method of scheduling RFID tag interrogations by a plurality of RFID readers so as to mitigate the effects of interference within an RFID environment in which the readers are deployed, and to enhance the efficiency and reliability of the overall RFID system. The system includes a plurality of RFID receivers for receiving RFID tag data, a plurality of RFID tag interrogators for transmitting RF interrogation signals for interrogating RFID tags, and a controller for providing to at least one interrogator, at least one receiver, and at least one tag, a parameter associated with operational characteristics of the interrogator, the receiver, and the tag, respectively. The interrogator, the receiver, and the tag are operative, in response to receipt of the respective parameter, to modify its operational characteristics in accordance with the respective parameter, thereby avoiding interference at the receivers and the tags.
    Type: Application
    Filed: July 29, 2005
    Publication date: February 2, 2006
    Inventors: Pattabhiraman Krishna, Jeffrey Fischer, David Husak, Robert Stephenson