Patents by Inventor Calvin B. Ward

Calvin B. Ward 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).

  • Publication number: 20190195438
    Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
    Type: Application
    Filed: November 19, 2018
    Publication date: June 27, 2019
    Inventors: Ghulam Hasnain, Calvin B. Ward
  • Publication number: 20190166291
    Abstract: An apparatus for taking moving pictures, a method for taking moving pictures, and a novel pixel sensor array are disclosed. The apparatus includes a rectangular imaging array, a plurality of column processing circuits, and a controller. The rectangular imaging array is characterized by a plurality of rows and columns of UHDR pixel sensors and a plurality of readout lines, and a plurality of row select lines. Each column processing circuit is connected to a corresponding one of the plurality of readout lines. The controller causes the rectangular imaging array to measure a plurality of images of a scene that is illuminated by a pulsating light source characterized by an illumination period and a dark period. Each of the images is generated in a frame period which includes an exposure period and a dead period, the dead period being less than the dark period.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 30, 2019
    Applicant: BAE Systems Imaging Solutions Inc.
    Inventors: Alberto M. Magnani, Christopher R. Adams, Calvin B. Ward
  • Patent number: 10132450
    Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: November 20, 2018
    Assignee: BRIDGELUX INC.
    Inventors: Ghulam Hasnain, Calvin B Ward
  • Patent number: 10020042
    Abstract: A memory cell and memories constructed from that memory cell are disclosed. A memory according to the present invention includes a ferroelectric capacitor, a charge source and a read circuit. The charge source receives a data value to be stored in the ferroelectric capacitor. The charge source converts the data value to a remanent charge to be stored in the ferroelectric capacitor and causes that remanent charge to be stored in the ferroelectric capacitor. The read circuit determines a charge stored in the ferroelectric capacitor. The data value has more than three distinct possible states, and the determined charge has more than three determined values. The memory also includes a reset circuit that causes the ferroelectric capacitor to enter a predetermined known reference state of polarization.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: July 10, 2018
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Jr., Calvin B. Ward
  • Publication number: 20170211754
    Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
    Type: Application
    Filed: February 2, 2017
    Publication date: July 27, 2017
    Inventors: Ghulam Hasnain, Calvin B Ward
  • Patent number: 9697882
    Abstract: A ferroelectric memory and a method for operating a ferroelectric memory are disclosed. The ferroelectric memory includes a ferroelectric memory cell having a ferroelectric capacitor characterized by a maximum remanent charge, Qmax. A write circuit receives a data value having more than two states for storage in the ferroelectric capacitor. The write circuit measures Qmax for the ferroelectric capacitor, determines a charge that is a fraction of the measured Qmax to be stored in the ferroelectric capacitor, the fraction being determined by the data value. The write circuit causes a charge equal to the fraction times Qmax to be stored in the ferroelectric capacitor. A read circuit determines a value stored in the ferroelectric capacitor by measuring a charge stored in the ferroelectric capacitor, measuring Qmax for the ferroelectric capacitor, and determining the data value from the measured charge and the measured Qmax.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: July 4, 2017
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Jr., Calvin B. Ward
  • Patent number: 9599287
    Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: March 21, 2017
    Assignee: BRIDGELUX, INC.
    Inventors: Ghulam Hasnain, Calvin B Ward
  • Publication number: 20170011789
    Abstract: A memory cell and memories constructed from that memory cell are disclosed. A memory according to the present invention includes a ferroelectric capacitor, a charge source and a read circuit. The charge source receives a data value to be stored in the ferroelectric capacitor. The charge source converts the data value to a remanent charge to be stored in the ferroelectric capacitor and causes that remanent charge to be stored in the ferroelectric capacitor. The read circuit determines a charge stored in the ferroelectric capacitor. The data value has more than three distinct possible states, and the determined charge has more than three determined values. The memory also includes a reset circuit that causes the ferroelectric capacitor to enter a predetermined known reference state of polarization.
    Type: Application
    Filed: September 20, 2016
    Publication date: January 12, 2017
    Applicant: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, JR., Calvin B. Ward
  • Patent number: 9496019
    Abstract: A memory cell and memories constructed from that memory cell are disclosed. A memory according to the present invention includes a ferroelectric capacitor, a charge source and a read circuit. The charge source receives a data value to be stored in the ferroelectric capacitor. The charge source converts the data value to a remanent charge to be stored in the ferroelectric capacitor and causes that remanent charge to be stored in the ferroelectric capacitor. The read circuit determines a charge stored in the ferroelectric capacitor. The data value has more than three distinct possible states, and the determined charge has more than three determined values. The memory also includes a reset circuit that causes the ferroelectric capacitor to enter a predetermined known reference state of polarization.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: November 15, 2016
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Jr., Calvin B. Ward
  • Publication number: 20160196862
    Abstract: A memory cell and memories constructed from that memory cell are disclosed. A memory according to the present invention includes a ferroelectric capacitor, a charge source and a read circuit. The charge source receives a data value to be stored in the ferroelectric capacitor. The charge source converts the data value to a remanent charge to be stored in the ferroelectric capacitor and causes that remanent charge to be stored in the ferroelectric capacitor. The read circuit determines a charge stored in the ferroelectric capacitor. The data value has more than three distinct possible states, and the determined charge has more than three determined values. The memory also includes a reset circuit that causes the ferroelectric capacitor to enter a predetermined known reference state of polarization.
    Type: Application
    Filed: March 16, 2016
    Publication date: July 7, 2016
    Applicant: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, JR., Calvin B. Ward
  • Patent number: 9324405
    Abstract: A memory cell and memories constructed from that memory cell are disclosed. A memory according to the present invention includes a ferroelectric capacitor, a charge source and a read circuit. The charge source receives a data value to be stored in the ferroelectric capacitor. The charge source converts the data value to a remanent charge to be stored in the ferroelectric capacitor and causes that remanent charge to be stored in the ferroelectric capacitor. The read circuit determines a charge stored in the ferroelectric capacitor. The data value has more than three distinct possible states, and the determined charge has more than three determined values. The memory also includes a reset circuit that causes the ferroelectric capacitor to enter a predetermined known reference state of polarization.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 26, 2016
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Jr., Calvin B. Ward
  • Publication number: 20150317715
    Abstract: A method for operating a computer system to provide information about a product to a customer is disclosed. The method includes receiving a login request identifying a specific business establishment and the customer from a customer device that is remote from the data processing system, and initiating a session for the customer between the computer and the customer device. When the computer receives a product code identifying a product in the business establishment that originates at a producer of the product, the computer sends information to the customer about the product, the information being verified by an organization independent of the producer of the product and the business establishment. The login request can be generated by the customer device interacting with a display at the business establishment, the display identifying the business establishment and optionally a location within the business establishment at which the customer is located.
    Type: Application
    Filed: July 14, 2015
    Publication date: November 5, 2015
    Applicant: Trace and Trust, Inc.
    Inventors: Michael Emile Clayton, Gaspar Catanzaro, Calvin B. Ward
  • Patent number: 8964446
    Abstract: A ferroelectric memory having a plurality of ferroelectric memory cells, each ferroelectric memory cell including a ferroelectric capacitor is disclosed. The ferroelectric memory includes read and write lines and a plurality of ferroelectric memory cell select buses, one select bus corresponding to each of the ferroelectric memory cells. Each of the ferroelectric memory cells includes first and second gates for connecting the ferroelectric memory cell to the read line and the write line, respectively, in response to signals on the ferroelectric memory cell select bus corresponding to that ferroelectric memory cell. A write circuit causes a charge to be stored in the ferroelectric capacitor of the ferroelectric memory cell currently connected to the write line, the charge having a value determined by a data value having at least three states.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: February 24, 2015
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Calvin B. Ward
  • Publication number: 20150039471
    Abstract: A method for operating a computer system to provide information about a product to a customer is disclosed. The method includes receiving a login request identifying a specific business establishment and the customer from a customer device that is remote from the data processing system, and initiating a session for the customer between the computer and the customer device. When the computer receives a product code identifying a product in the business establishment that originates at a producer of the product, the computer sends information to the customer about the product, the information being verified by an organization independent of the producer of the product and the business establishment. The login request can be generated by the customer device interacting with a display at the business establishment, the display identifying the business establishment and optionally a location within the business establishment at which the customer is located.
    Type: Application
    Filed: August 1, 2013
    Publication date: February 5, 2015
    Inventors: Michael Emile Clayton, Gaspar Catanzaro, Calvin B. Ward
  • Publication number: 20150016175
    Abstract: A memory cell and memories constructed from that memory cell are disclosed. A memory according to the present invention includes a ferroelectric capacitor, a charge source and a read circuit. The charge source receives a data value to be stored in the ferroelectric capacitor. The charge source converts the data value to a remanent charge to be stored in the ferroelectric capacitor and causes that remanent charge to be stored in the ferroelectric capacitor. The read circuit determines a charge stored in the ferroelectric capacitor. The data value has more than three distinct possible states, and the determined charge has more than three determined values. The memory also includes a reset circuit that causes the ferroelectric capacitor to enter a predetermined known reference state of polarization.
    Type: Application
    Filed: September 26, 2014
    Publication date: January 15, 2015
    Applicant: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, JR., Calvin B. Ward
  • Publication number: 20140247643
    Abstract: A ferroelectric memory having a plurality of ferroelectric memory cells, each ferroelectric memory cell including a ferroelectric capacitor is disclosed. The ferroelectric memory includes read and write lines and a plurality of ferroelectric memory cell select buses, one select bus corresponding to each of the ferroelectric memory cells. Each of the ferroelectric memory cells includes first and second gates for connecting the ferroelectric memory cell to the read line and the write line, respectively, in response to signals on the ferroelectric memory cell select bus corresponding to that ferroelectric memory cell. A write circuit causes a charge to be stored in the ferroelectric capacitor of the ferroelectric memory cell currently connected to the write line, the charge having a value determined by a data value having at least three states.
    Type: Application
    Filed: May 9, 2014
    Publication date: September 4, 2014
    Applicant: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Calvin B. Ward
  • Publication number: 20140226333
    Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
    Type: Application
    Filed: February 13, 2014
    Publication date: August 14, 2014
    Applicant: BRIDGELUX, INC.
    Inventors: Ghulam Hasnain, Calvin B. Ward
  • Patent number: 8787063
    Abstract: A ferroelectric memory having a plurality of ferroelectric memory cells, each ferroelectric memory cell including a ferroelectric capacitor is disclosed. The ferroelectric memory includes read and write lines and a plurality of ferroelectric memory cell select buses, one select bus corresponding to each of the ferroelectric memory cells. Each of the ferroelectric memory cells includes first and second gates for connecting the ferroelectric memory cell to the read line and the write line, respectively, in response to signals on the ferroelectric memory cell select bus corresponding to that ferroelectric memory cell. A write circuit causes a value determined by a data value having at least three states to be stored in the ferroelectric memory cell currently connected to the write line. A read circuit measures the charge stored in the ferroelectric memory cell currently connected to the read line.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: July 22, 2014
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Jr., Calvin B. Ward
  • Patent number: 8760907
    Abstract: A ferroelectric memory having a plurality of ferroelectric memory cells, each ferroelectric memory cell including a ferroelectric capacitor is disclosed. The ferroelectric memory includes read and write lines and a plurality of ferroelectric memory cell select buses, one select bus corresponding to each of the ferroelectric memory cells. Each of the ferroelectric memory cells includes first and second gates for connecting the ferroelectric memory cell to the read line and the write line, respectively, in response to signals on the ferroelectric memory cell select bus corresponding to that ferroelectric memory cell. A write circuit causes a charge to be stored in the ferroelectric capacitor of the ferroelectric memory cell currently connected to the write line, the charge having a value determined by a data value having at least three states.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: June 24, 2014
    Assignee: Radiant Technologies, Inc.
    Inventors: Joseph T. Evans, Jr., Calvin B. Ward
  • Patent number: 8668361
    Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: March 11, 2014
    Assignee: Bridgelux, Inc.
    Inventors: Ghulam Hasnain, Calvin B. Ward