Patents by Inventor Paul D. Schwartz

Paul D. Schwartz 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: 8933666
    Abstract: A method of equalizing charge states of individual cells in a battery includes measuring a previous cell voltage for each cell, measuring a previous shunt current for each cell, calculating, based on the previous cell voltage and the previous shunt current, an adjusted cell voltage for each cell, determining a lowest adjusted cell voltage from among the calculated adjusted cell voltages, and calculating a new shunt current for each cell.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: January 13, 2015
    Assignee: The Johns Hopkins University
    Inventors: Paul D. Schwartz, Mark N. Martin, Lewis M. Roufberg
  • Publication number: 20120007559
    Abstract: A method of equalizing charge states of individual cells in a battery includes measuring a previous cell voltage for each cell, measuring a previous shunt current for each cell, calculating, based on the previous cell voltage and the previous shunt current, an adjusted cell voltage for each cell, determining a lowest adjusted cell voltage from among the calculated adjusted cell voltages, and calculating a new shunt current for each cell.
    Type: Application
    Filed: July 12, 2011
    Publication date: January 12, 2012
    Inventors: Paul D. Schwartz, Mark N. Martin, Lewis M. Roufberg
  • Patent number: 6967103
    Abstract: An explosive detector that utilizes an array of molecularly imprinted polymer (MIP) coated, bifurcated fiber optic cables to form an image of a target molecule source. Individual sensor fiber assemblies, each with a calibrated airflow, are used to expose the fibers to the target molecule. The detector energizes a dedicated excitation light source for each fiber, while simultaneously reading and processing the intensity of the resulting fluorescence that is indicative of the concentration of the target molecule. Processing electronics precisely controls the excitation current, and measures the detected signal from each narrow band pass filter and photodiode. A computer with display processes the data to form an image of the target molecule source that can be used to identify the source even when low level contamination of the same molecule is present. The detector can be used to detect multiple and/or non-explosive targets by varying the MIP coating.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: November 22, 2005
    Assignee: The Johns Hopkins University
    Inventors: Paul D. Schwartz, George M. Murray, O. Manuel Uy, Binh Q. Le, David D. Scott, Ark L. Lew, Sharon X. Ling, Joseph J. Suter
  • Patent number: 6881593
    Abstract: A semiconductor die adapter assembly includes a semiconductor die cut from a wafer, the die having an active surface including bond pads. A die adapter, also having bond pads, is bonded to the semiconductor die. Die-to-adapter connectors electrically connect the die bond pads to the adapter bond pads. Finally, adapter-to-substrate connectors electrically connect the adapter bond pads to a device substrate. Having bond pads on the die adapter eliminates the need to break and remake the electrical connections to the original bond pads on the die during burn-in testing of the die.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: April 19, 2005
    Assignee: The Johns Hopkins University
    Inventors: Binh Q. Le, Ark L. Lew, Harry K. Charles, Jr., Paul D. Schwartz, Seppo J. Lehtonen, Sharon X. Ling
  • Patent number: 6847913
    Abstract: An ambulatory skin temperature monitoring system. A flexible band is attachable to a patient. The flexible band also secures an electronics assembly that comprises the various electrical components that monitor and operate the ambulatory skin temperature monitoring system. At least one skin temperature sensor is positioned so that it is in contact with the patients skin when the system is attached to the patient. There is also an ambient temperature sensor positioned on the top surface of the electronics assembly housing for measuring and contrasting the ambient temperature to the skin temperature. The electronics assembly positioned within generally comprises a power source and a micro-controller. The micro-controller is coupled with the skin temperature sensor and the ambient temperature sensor. The micro-controller also includes a memory unit for storing temperature data obtained from the skin temperature sensor and the ambient temperature sensor.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: January 25, 2005
    Assignee: The Johns Hopkins University
    Inventors: Fredrick M. Wigley, Robert A. Wise, Paul D. Schwartz, Ark L. Lew, David D. Scott, Binh Q. Le
  • Publication number: 20040155897
    Abstract: A user interface for a device such as a presentation player includes a sensor capable of sensing printed material. Commands for the device can thus be printed and sensed using the sensor, and the device does not require user interface hardware that is difficult to miniaturize. For a presentation player, the printed material can be a companion book or other printed material containing images or other printed sections that correspond to specific recorded audio or video sections. Sensing a symbol in or the content of a printed section indicates a data section that the player can select and play while the user views the corresponding printed section. The printed material can further include control signals to which the user applies the sensor to show authorization to use the system or to change the volume, tone, balance, time scale, brightness, contrast, color, or other operating parameter of the player.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 12, 2004
    Inventors: Paul D. Schwartz, Shin Saikyo
  • Patent number: 6763458
    Abstract: The invention provides apparatus, computer program, and method for multiple operating system support and a fast startup capability in a computer or information appliance. It permits execution of one of a plurality of available operating systems at the time of powering on the device and where data generated within one of the plurality of operating systems is available to a different application program executing within a different operating system on the same device. Provides for unattended file transfers and appliance mode operation for playing back digital audio without the overhead associated with conventional systems. Permit various microprocessor based systems to operate efficiently and with lower overhead.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: July 13, 2004
    Assignee: Captaris, Inc.
    Inventors: Ryoji Watanabe, Henry T. Fung, Paul D. Schwartz
  • Publication number: 20030143119
    Abstract: An explosive detector that utilizes an array of molecularly imprinted polymer (MIP) coated, bifurcated fiber optic cables to form an image of a target molecule source. Individual sensor fiber assemblies, each with a calibrated airflow, are used to expose the fibers to the target molecule. The detector energizes a dedicated excitation light source for each fiber, while simultaneously reading and processing the intensity of the resulting fluorescence that is indicative of the concentration of the target molecule. Processing electronics precisely controls the excitation current, and measures the detected signal from each narrow band pass filter and photodiode. A computer with display processes the data to form an image of the target molecule source that can be used to identify the source even when low level contamination of the same molecule is present. The detector can be used to detect multiple and/or non-explosive targets by varying the MIP coating.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 31, 2003
    Inventors: Paul D. Schwartz, George M. Murray, O. Manuel Uy, Binh Q. Le, David D. Stott, Ark L. Lew, Sharon X. Ling, Joseph J. Suter
  • Publication number: 20030069714
    Abstract: An ambulatory skin temperature monitoring system. A flexible band is attachable to a patient. The flexible band also secures an electronics assembly that comprises the various electrical components that monitor and operate the ambulatory skin temperature monitoring system. At least one skin temperature sensor is positioned so that it is in contact with the patients skin when the system is attached to the patient. There is also an ambient temperature sensor positioned on the top surface of the electronics assembly housing for measuring and contrasting the ambient temperature to the skin temperature. The electronics assembly positioned within generally comprises a power source and a micro-controller. The micro-controller is coupled with the skin temperature sensor and the ambient temperature sensor. The micro-controller also includes a memory unit for storing temperature data obtained from the skin temperature sensor and the ambient temperature sensor.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 10, 2003
    Inventors: Fredrick M. Wigley, Robert A. Wise, Paul D. Schwartz, Ark L. Lew, David D. Stott, Binh Q. Le
  • Publication number: 20030011060
    Abstract: A semiconductor die adapter assembly includes a semiconductor die cut from a wafer, the die having an active surface including bond pads. A die adapter, also having bond pads, is bonded to the semiconductor die. Die-to-adapter connectors electrically connect the die bond pads to the adapter bond pads. Finally, adapter-to-substrate connectors electrically connect the adapter bond pads to a device substrate. Having bond pads on the die adapter eliminates the need to break and remake the electrical connections to the original bond pads on the die during burn-in testing of the die.
    Type: Application
    Filed: May 31, 2002
    Publication date: January 16, 2003
    Inventors: Binh Q. Le, Ark L. Lew, Harry K. Charles,, Paul D. Schwartz, Seppo J. Lehtonen, Sharon X. Ling
  • Patent number: 6255799
    Abstract: The invention comprises a means for generating energy while walking or running for storage in a rechargeable battery. One embodiment uses lever arm movement in the heel of a shoe resulting from normal walking or running to generate energy from a built-in generator. The linear or rotational motion of the lever arm engages the circular gear assembly and turns the generator/motor/turbine, thus generating power. The second embodiment uses fluid reservoirs embedded in the shoes. Pressure changes resulting from normal walking or running moves the fluid through a narrow channel connecting two reservoirs, thus generating power by rotating a flywheel and an attached motor/generator/turbine in the middle of the channel. Secondary (rechargeable) batteries are incorporated into the invention either in an integrated form or as an add-on design.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: July 3, 2001
    Assignee: The Johns Hopkins University
    Inventors: Binh Q. Le, Ark L. Lew, Paul D. Schwartz, Albert C. Sadilek, Joseph J. Suter, Jason E. Jenkins, Sharon X. Ling
  • Patent number: 6157167
    Abstract: A microprocessor-based charge control architecture which provides individual battery cell charge control in order to insure an equality of charge among all cells in a rechargeable battery cell array during a single charge cycle. The array is arranged in parallel strings with an identical number of cells in series in each string. The microprocessor controls the amount of charge current in each battery cell via a shunt element for each battery cell, and adjusts the shunt element to bypass a portion of the string current for each battery cell. The invention also permits charge control algorithms to be conveniently updated, provides individual cell coulometry, and autonomously monitors and corrects conditions which can result in battery failure. Any type of rechargeable battery cell and array size can be accommodated. The array size can be set to accommodate the specific voltage and load current requirements of each application.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: December 5, 2000
    Assignee: The Johns Hopkins University
    Inventors: Paul D. Schwartz, Binh Q. Le, Ark L. Lew, Joseph J. Suter
  • Patent number: 5379299
    Abstract: A delay compensating circuit for equalizing the propagation and processing delays from data sources which are read sequentially by a central data processing unit. Data from individual data sources is multiplexed into a real-time composite data stream which contains data from each data source and in which the final data bit from one source is followed, during the next clock cycle, by the first data bit from the next data source. To achieve this order, the total (propagation and processing) delay from each data source is controlled to a fixed amount by adding a compensating delay to each data source and adjusting delay automatically following each data transfer based on the occurrence of a known data transition in each data frame.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: January 3, 1995
    Assignee: The Johns Hopkins University
    Inventor: Paul D. Schwartz
  • Patent number: 4651617
    Abstract: A drum striking instrument capable of being used to produce single stroke, multiple drum beat rolls and, alternatively, capable of being used in a manner similar to any standard drumstick. The striking instrument has an elongated main body with a first head on one end. Pivotally attached, and biased at a particular angle relative to the main body is an elongated side body having a second head on its free end.
    Type: Grant
    Filed: March 31, 1986
    Date of Patent: March 24, 1987
    Inventor: Paul D. Schwartz
  • Patent number: D683566
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: June 4, 2013
    Assignee: Sand Secured Corporation
    Inventor: Paul D. Schwartz