Patents by Inventor Hamid Sarv

Hamid Sarv 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: 11228981
    Abstract: The present invention relates to a method for controlling a device controller of an electronic device comprising a fingerprint sensor to transition from an at least partly active mode to an at least partly in-active mode. The fingerprint sensor itself is used for determining a presence of a finger on the fingerprint sensor, wherein a device controller is maintained in an at least partly active mode if a finger is detected on the fingerprint sensor. The present invention also relates to an electronic device comprising a fingerprint sensor and a device controller.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 18, 2022
    Assignee: FINGERPRINT CARDS ANACATUM IP AB
    Inventors: Hamid Sarve, Jimmy Björklund
  • Patent number: 11176234
    Abstract: The present invention relates to a method for transitioning a device controller comprised with an electronic device from an at least partly inactive mode to an at least partly active mode, wherein the method comprises: determining the area portion of a finger detecting structure being touched by an object; determining a force applied on the fingerprint sensing device. When the area portion of the finger detecting structure being touched by the object exceeds a predetermined threshold area portion, and the force exceeds a predetermined threshold force value, transitioning, using the pre-processing module, the device controller from the at least partly inactive mode to the at least partly active mode. The invention also relates to such an electronic device.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: November 16, 2021
    Assignee: FINGERPRINT CARDS AB
    Inventors: Markus Andersson, Fredrik Ramberg, Hans Thörnblom, Gabriel Rundlöf, Hamid Sarve, Troels Bjerre
  • Patent number: 9646193
    Abstract: A method of authenticating a candidate fingerprint by means of an electronic device comprising a touch sensor; and a fingerprint sensor. The method comprises the steps of: acquiring at least one touch sensor signal indicative of a sub-area of the touch sensor being touched by the candidate finger; acquiring at least one fingerprint image of the candidate fingerprint; retrieving a stored enrollment representation of the enrolled fingerprint of the enrolled finger; determining an authentication representation of the candidate fingerprint based on the fingerprint image; and determining an authentication result based on the authentication representation, the stored enrollment representation, and the at least one touch sensor signal.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: May 9, 2017
    Assignee: FINGERPRINT CARDS AB
    Inventors: Eric Setterberg, Hamid Sarve, Hans Thörnblom, Kenneth Jonsson
  • Patent number: 9607205
    Abstract: A method of authenticating a candidate fingerprint by means of an electronic device comprising a touch sensor; and a fingerprint sensor. The method comprises the steps of: acquiring at least one touch sensor signal indicative of a sub-area of the touch sensor being touched by the candidate finger; acquiring at least one fingerprint image of the candidate fingerprint; retrieving a stored enrollment representation of the enrolled fingerprint of the enrolled finger; determining an authentication representation of the candidate fingerprint based on the fingerprint image; and determining an authentication result based on the authentication representation, the stored enrollment representation, and the at least one touch sensor signal.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 28, 2017
    Assignee: FINGERPRINT CARDS AB
    Inventors: Eric Setterberg, Hamid Sarve, Hans Thörnblom, Kenneth Jonsson
  • Patent number: 9477872
    Abstract: In a fingerprint sensing system, a determination is made of a center of attention, COA, point. The COA point is a point on a finger of a user that is likely to be in proximity of the center of a fingerprint image of the finger obtained by a fingerprint sensor. This COA determination is used in guiding the user in a fingerprint enrolment procedure.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: October 25, 2016
    Assignee: FINGERPRINT CARDS AB
    Inventors: Hamid Sarve, David Tingdahl, Carsten Juncker, Niels Mørch
  • Publication number: 20160180146
    Abstract: A method of authenticating a candidate fingerprint by means of an electronic device comprising a touch sensor; and a fingerprint sensor. The method comprises the steps of: acquiring at least one touch sensor signal indicative of a sub-area of the touch sensor being touched by the candidate finger; acquiring at least one fingerprint image of the candidate fingerprint; retrieving a stored enrollment representation of the enrolled fingerprint of the enrolled finger; determining an authentication representation of the candidate fingerprint based on the fingerprint image; and determining an authentication result based on the authentication representation, the stored enrollment representation, and the at least one touch sensor signal.
    Type: Application
    Filed: November 24, 2015
    Publication date: June 23, 2016
    Applicant: FINGERPRINT CARDS AB
    Inventors: Eric Setterberg, Hamid Sarve, Hans Thörnblom, Kenneth Jonsson
  • Patent number: 8113824
    Abstract: A large diameter mid-zone air separation cone is provided for decreasing NOx during burner operation by expanding the internal recirculation zone (IRZ) at the burner exit. The mid-zone air separation cone has a short cylindrical leading edge that fits in the outer air zone of a burner. The mid-zone air separation cone splits the outer air zone secondary air flow into two equal or unequal streams depending on the position of the air separation cone with respect to the outer air zone, and deflects a portion of the secondary air flow radially outward. Since the radial position of the air separation cone is farther from the burner centerline, the IRZ size is expanded and NOx emissions are minimized.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: February 14, 2012
    Inventors: Hamid Sarv, Albert D. LaRue, William J. Kahle, Alan N. Sayre, Daniel R. Rowley
  • Publication number: 20090084294
    Abstract: A method and apparatus for reducing NOx emissions in a coal burning furnace of a power plant without utilizing techniques downstream of the furnace, such as SCR and SNCR, is provided. In a primary combustion zone, a fuel is combusted in the presence of a first oxidant gas comprised substantially of N2, to produce a first effluent gas that include one or more NOx species. Downstream a re-burn zone is operated in a sub-stoichiometric manner, combusting a second fuel in presence of the first effluent gas and a second oxidant wherein the second oxidant gas comprises a stream of oxygen. The effluent gas from the re-burn zone is introduced to overfire airflow so as to establish a super-stoichiometric zone prior to discharged from the furnace.
    Type: Application
    Filed: November 15, 2007
    Publication date: April 2, 2009
    Inventor: Hamid Sarv
  • Patent number: 7491055
    Abstract: A method is disclosed for reducing the NOx emission of fossil fuel burners. The method creates fuel-rich and fuel-lean zones within the boiler to enhance the removal of NOx species by creating a plurality of NOx reducing precursors.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: February 17, 2009
    Inventor: Hamid Sarv
  • Publication number: 20090007827
    Abstract: A combustion system equipped with one or more carbonaceous fuel burning combustors (e.g., slagging Cyclone combustor) and adapted to minimize nitrogen oxide (NOx) formation during staged combustion operation by selective introduction of oxygen through at least one of the combustors to create a hot sub-stoichiometric combustion zone by reducing the diluent effect of nitrogen and other inert gases present in the oxidizer/air. A method of operating the combustion system of the invention with reduced NOx emissions is also disclosed.
    Type: Application
    Filed: May 29, 2008
    Publication date: January 8, 2009
    Inventors: Hamid Sarv, Gerald J. Maringo, Alan Neal Sayre, Rajani Kanth Varagani
  • Patent number: 7430970
    Abstract: A new burner apparatus and method of combusting fossils fuels for commercial and industrial application is provided wherein the new burner apparatus achieves low NOx emissions by supplying oxygen to the center of the burner flame in as manners so as to create a fuel rich internal combustion zone within the burner flame.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: October 7, 2008
    Inventors: Albert D. LaRue, Alan N. Sayre, William J. Kahle, Hamid Sarv, Daniel R. Rowley
  • Patent number: 7367798
    Abstract: An air swirler capable of liquid fuel atomization for a fuel fired burner in a furnace or boiler having a hollow guide pipe supporting several swirl blades at an end adjacent to the furnace. Openings connected by tunnels to the inside of the guide pipe are provided in the trailing edges of each swirl blade. A fuel pipe is concentric with the guide pipe forming an annular space therebetween. Gaseous substances such as oxygen or natural gas are provided through the annular space and liquid fuel is provided through the fuel pipe. The fuel and gaseous substances travel through the tunnels to the openings for liquid fuel atomization and pre-mixing at the burner throat to reduce NOx formation.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: May 6, 2008
    Inventor: Hamid Sarv
  • Publication number: 20070281265
    Abstract: A large diameter mid-zone air separation cone is provided for decreasing NOx during burner operation by expanding the internal recirculation zone (IRZ) at the burner exit. The mid-zone air separation cone has a short cylindrical leading edge that fits in the outer air zone of a burner. The mid-zone air separation cone splits the outer air zone secondary air flow into two equal or unequal streams depending on the position of the air separation cone with respect to the outer air zone, and deflects a portion of the secondary air flow radially outward. Since the radial position of the air separation cone is farther from the burner centerline, the IRZ size is expanded and NOx emissions are minimized.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventors: Hamid Sarv, Albert D. LaRue, William J. Kahle, Alan N. Sayre, Daniel R. Rowley
  • Publication number: 20070034126
    Abstract: A method of reducing nitrogen oxide emissions formed during fuel combustion by introducing biomass ash into a combustion chamber.
    Type: Application
    Filed: June 27, 2006
    Publication date: February 15, 2007
    Inventors: Wei-Yin Chen, Hamid Sarv
  • Publication number: 20070003889
    Abstract: A new burner apparatus and method of combusting fossils fuels for commercial and industrial application is provided wherein the new burner apparatus achieves low NOx emissions by supplying oxygen to the center of the burner flame in as manners so as to create a fuel rich internal combustion zone within the burner flame.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Albert LaRue, Alan Sayre, William Kahle, Hamid Sarv, Daniel Rowley
  • Publication number: 20060281036
    Abstract: An air swirler capable of liquid fuel atomization for a fuel fired burner in a furnace or boiler having a hollow guide pipe supporting several swirl blades at an end adjacent to the furnace. Openings connected by tunnels to the inside of the guide pipe are provided in the trailing edges of each swirl blade. A fuel pipe is concentric with the guide pipe forming an annular space therebetween. Gaseous substances such as oxygen or natural gas are provided through the annular space and liquid fuel is provided through the fuel pipe. The fuel and gaseous substances travel through the tunnels to the openings for liquid fuel atomization and pre-mixing at the burner throat to reduce NOx formation.
    Type: Application
    Filed: June 8, 2005
    Publication date: December 14, 2006
    Inventor: Hamid Sarv
  • Publication number: 20060257800
    Abstract: A method is disclosed for reducing the NOx emission of fossil fuel burners. The method creates fuel-rich and fuel-lean zones within the boiler to enhance the removal of NOx species by creating a plurality of NOx reducing precursors.
    Type: Application
    Filed: July 18, 2005
    Publication date: November 16, 2006
    Inventor: Hamid Sarv
  • Patent number: 6951454
    Abstract: A dual fuel burner including an elongated supply pipe and a gas injector for a boiler furnace having a plurality of peripheral openings around a center opening. The peripheral openings are pitched radially away from the longitudinal axis of the gas injector and also pitched either clockwise or counter-clockwise, to impart a swirling motion to gaseous fuel exiting the injector through the openings. A first sleeve member is concentrically spaced about the supply pipe and the gas injector to form an inner annular passageway for conveying a mixture of primary air and pulverized coal to the furnace combustion zone. A second sleeve member is concentrically spaced about the first sleeve member to form an outer annular passageway for conveying secondary air to the furnace combustion zone, and a plurality of circumferentially spaced vanes mounted within the outer annular passageway for inducing a swirling motion to the secondary air discharging from the outer annular passageway into the furnace combustion zone.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: October 4, 2005
    Assignee: The Babcock & Wilcox Company
    Inventors: Hamid Sarv, Ronald C. Lenzer
  • Publication number: 20040234912
    Abstract: A gas injector for a furnace or boiler gas-fired burner has a plurality of peripheral openings around a center opening. The peripheral openings are pitched radially away from the longitudinal axis of the gas injector and also pitched either clockwise (CW) or counter-clockwise (CCW), to impart a swirling motion to gaseous fuel exiting the injector through the openings. The gas injector with the radial plus CW or CCW pitched peripheral openings has reduced flame length and lower CO emissions and only slightly elevated levels of NOx emissions relative to a gas injector with only radially pitched openings. The gas injector is useful in furnaces having small enclosures to prevent burner flames from impinging on the opposing walls.
    Type: Application
    Filed: May 21, 2003
    Publication date: November 25, 2004
    Inventors: Hamid Sarv, Ronald C. Lenzer
  • Publication number: 20030017088
    Abstract: A CO2 removal and sequestration system uses a limestone bed of coarse crushed limestone covering pipes which carry a flue gas. The pipes have spaced openings which permit flue gas to pass into the limestone bed. Water fills the bed to about {fraction (2/3 )} of the height of the limestone, which is higher than the depth of the pipes. The water flows through the bed at a predetermined rate. The bed is arranged as a series of parallel rows of beds with open channels between each pair of adjacent rows. The open channels are alternating water inlet and outlet channels. A flue gas delivery system includes headers and manifolds for distributing the flue gas at sufficient pressure to overcome existing water pressure at the pipe openings. The process includes the steps of removing CO2 from the flue gas in the bed, dissolving CO2 in the water in the bed, and then returning the water/CO2 to the ocean, river, lake or other area which may be used to store CO2.
    Type: Application
    Filed: July 20, 2001
    Publication date: January 23, 2003
    Inventors: William Downs, Hamid Sarv