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).
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Patent number: 10025959Abstract: 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: GrantFiled: December 29, 2016Date of Patent: July 17, 2018Assignee: Quake Global, Inc.Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
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Patent number: 10019665Abstract: 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: GrantFiled: October 24, 2016Date of Patent: July 10, 2018Assignee: QUAKE GLOBAL, INC.Inventors: Pattabhiraman Krishna, Scott Barvick, John W. Thorburn
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Publication number: 20170109554Abstract: 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: ApplicationFiled: December 29, 2016Publication date: April 20, 2017Inventors: Scott BARVICK, Pattabhiraman KRISHNA, Hiroto SHIBUYA
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Publication number: 20170039466Abstract: 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: ApplicationFiled: October 24, 2016Publication date: February 9, 2017Inventors: Pattabhiraman KRISHNA, Scott BARVICK, John W. THORBURN
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Patent number: 9536117Abstract: 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: GrantFiled: October 29, 2013Date of Patent: January 3, 2017Assignee: Quake Global, Inc.Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
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Patent number: 9477922Abstract: 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: GrantFiled: August 25, 2011Date of Patent: October 25, 2016Assignee: QUAKE GLOBAL, INC.Inventors: Pattabhiraman Krishna, Scott Barvick, John W. Thorburn, Jr.
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Publication number: 20140054379Abstract: 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: ApplicationFiled: October 29, 2013Publication date: February 27, 2014Applicant: Quake Global, Inc.Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
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Patent number: 8570156Abstract: 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 managementType: GrantFiled: August 25, 2011Date of Patent: October 29, 2013Assignee: Quake Global, Inc.Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
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Publication number: 20120056720Abstract: 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 managementType: ApplicationFiled: August 25, 2011Publication date: March 8, 2012Inventors: Scott Barvick, Pattabhiraman Krishna, Hiroto Shibuya
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Publication number: 20120056719Abstract: 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: ApplicationFiled: August 25, 2011Publication date: March 8, 2012Inventors: Pattabhiraman Krishna, Scott Barvick, John W. Thorburn, JR.
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Patent number: 7817014Abstract: 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: GrantFiled: July 29, 2005Date of Patent: October 19, 2010Assignee: Reva Systems CorporationInventors: Pattabhiraman Krishna, Jeffrey H. Fischer, David J. Husak, Robert A. Stephenson
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Patent number: 7692532Abstract: 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: GrantFiled: July 29, 2005Date of Patent: April 6, 2010Assignee: Reva Systems CorporationInventors: Jeffrey H. Fischer, David J. Husak, Pattabhiraman Krishna
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Patent number: 7667572Abstract: 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: GrantFiled: July 29, 2005Date of Patent: February 23, 2010Assignee: Reva Systems CorporationInventors: David J. Husak, Robert A. Stephenson, Michael Grady, Scott Barvick, Pattabhiraman Krishna, Chilton L. Cabot, Jeffrey H. Fischer
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Patent number: 7667575Abstract: 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: GrantFiled: July 29, 2005Date of Patent: February 23, 2010Assignee: Reva Systems CorporationInventors: David J. Husak, Pattabhiraman Krishna, Peter Spreadborough, Jeffrey H. Fischer
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Publication number: 20090256683Abstract: 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: ApplicationFiled: June 22, 2009Publication date: October 15, 2009Applicant: REVA SYSTEMS CORPORATIONInventors: Robert A. Stephenson, Michael Grady, Scott Barvick, David J. Husak, Lin Zhou, Nirav R. Shah, Pattabhiraman Krishna, Jeffrey H. Fischer, Chilton L. Cabot
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Patent number: 7567179Abstract: 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: GrantFiled: October 16, 2006Date of Patent: July 28, 2009Assignee: Reva Systems CorporationInventors: Robert A. Stephensen, Michael Grady, Scott Barvick, David J. Husak, Lin Zhou, Nirav R. Shah, Pattabhiraman Krishna, Jeffrey H. Fischer, Chilton L. Cabot
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Publication number: 20070099623Abstract: 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: ApplicationFiled: October 16, 2006Publication date: May 3, 2007Inventors: Robert Stephensen, Michael Grady, Scott Barvick, David Husak, Lin Zhou, Nirav Shah, Pattabhiraman Krishna, Jeffrey Fischer, Chilton Cabot
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Publication number: 20060170565Abstract: 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: ApplicationFiled: July 29, 2005Publication date: August 3, 2006Inventors: David Husak, Pattabhiraman Krishna, Peter Spreadborough, Jeffrey Fischer
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Publication number: 20060022815Abstract: 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: ApplicationFiled: July 29, 2005Publication date: February 2, 2006Inventors: Jeffrey Fischer, David Husak, Pattabhiraman Krishna
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Publication number: 20060022800Abstract: 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: ApplicationFiled: July 29, 2005Publication date: February 2, 2006Inventors: Pattabhiraman Krishna, Jeffrey Fischer, David Husak, Robert Stephenson