Patents by Inventor John D. Langan

John D. Langan 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: 6910060
    Abstract: A system, apparatus and methods are disclosed for the spatial and temporal processing of time dependant array data using analog signal processors. In one embodiment, a programmable array of switched capacitors is used to provide tunable parameters for controlling the desired processing of input data streams. The switched capacitor implementation of a spatial filter provides a massively parallel device that can be programmed to perform isotropic and spatially-oriented anisotropic filtering with low power demands. The system further includes the ability to combine differently filtered output streams with independent multiplicative weights. In another embodiment, the nonlinear spatio-temporal motion energy of a two-dimensional image stream data is computed. The spatial-temporal filter is able to combine multiple analog filters, both spatial and temporal, to perform complex spatial-temporal filtering operations implemented by Gaussian kernel filtering chips.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: June 21, 2005
    Assignee: Computational Sensor Corp.
    Inventors: John D. Langan, Jeffrey S. Scott, Peter Stobbe
  • Publication number: 20040193670
    Abstract: A system, apparatus and methods are disclosed for the spatial and temporal processing of time dependant array data using analog signal processors. In one embodiment, a programmable array of switched capacitors is used to provide tunable parameters for controlling the desired processing of input data streams. The switched capacitor implementation of a spatial filter provides a massively parallel device that can be programmed to perform isotropic and spatially-oriented anisotropic filtering with low power demands. The system further includes the ability to combine differently filtered output streams with independent multiplicative weights. In another embodiment, the nonlinear spatio-temporal motion energy of a two-dimensional image stream data is computed. The spatial-temporal filter is able to combine multiple analog filters, both spatial and temporal, to perform complex spatial-temporal filtering operations implemented by Gaussian kernel filtering chips.
    Type: Application
    Filed: January 7, 2004
    Publication date: September 30, 2004
    Inventors: John D. Langan, Jeffrey S. Scott, Peter Stobbe
  • Publication number: 20030041084
    Abstract: A system, apparatus and methods are disclosed for the spatial and temporal processing of time dependant array data using analog signal processors. In one embodiment, a programmable array of switched capacitors is used to provide tunable parameters for controlling the desired processing of input data streams. The switched capacitor implementation of a spatial filter provides a massively parallel device that can be programmed to perform isotropic and spatially-oriented anisotropic filtering with low power demands. The system further includes the ability to combine differently filtered output streams with independent multiplicative weights. In another embodiment, the nonlinear spatio-temporal motion energy of a two-dimensional image stream data is computed. The spatial-temporal filter is able to combine multiple analog filters, both spatial and temporal, to perform complex spatial-temporal filtering operations implemented by Gaussian kernel filtering chips.
    Type: Application
    Filed: May 21, 2002
    Publication date: February 27, 2003
    Inventors: John D. Langan, Jeffrey S. Scott, Peter Stobbe
  • Patent number: 5804836
    Abstract: A smart array comprised an array of polymer grid triodes arrayed with a common polymer grid. In a preferred embodiment it is embodied as a conducting polymer device which provides local gain adjustment for video display such that the entire sensor dynamic range available, typically more than 16 bits in the infrared detector case, can be utilized locally to solve the intra-scene contrast problem. The array of polymer grid triodes with common grid can be utilized to process the image in analog form directly on the focal plane. Alternatively, the array of polymer grid triodes with common grid can be utilized to process the image after analog to digital conversion and integrated directly into the display.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: September 8, 1998
    Assignee: Uniax Corporation
    Inventors: Alan J. Heeger, David Heeger, John D. Langan
  • Patent number: 4781358
    Abstract: An apparatus for measuring and regulating the variable pressure furnace gas chemistry is described. The apparatus uses a mass spectrometer for measurements, in the preferred form of the invention, in which gas species percent composition is obtained quantitatively independent of total furnace pressure variation. Using such a real time measurement capability, active control of batch process furnace operations is possible by intrinsic measurement of the part outgassing rather than by assumption of batch part status as a function of extrinsic parameters such as temperature and total pressure. Thus, by a combination of batch process temperature ramp control and variable admittance of suitable gas into the furnace, uniform batch processing is possible by closed loop control, due to renormalization of furnace residual gas chemistry from day to day drift and from batch part chemistry variation.
    Type: Grant
    Filed: August 17, 1987
    Date of Patent: November 1, 1988
    Inventor: John D. Langan
  • Patent number: 4719073
    Abstract: A process and apparatus for measuring and regulating the variable pressure furnace gas chemistry is described. The method makes use of mass spectrometer measurements, in the preferred form of the invention, in which gas species percent composition is obtained quantitatively independent of total furnace pressure variation. Using such a real time measurement capability, active control of batch process furnace operations is possible by intrinsic measurement of the part outgassing rather than by assumption of batch part status as a function of extrinsic parameters such as temperature and total pressure. Thus, by a combination of batch process temperature ramp control and variable admittance of suitable gas into the furnace, uniform batch processing is possible by closed loop control, due to renormalization of furnace residual gas chemistry from day to day drift and from batch part chemistry variation.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: January 12, 1988
    Inventor: John D. Langan
  • Patent number: 4593277
    Abstract: A channel is formed in the body of a machine tool holder, this channel extending to the area where the tool is working on the workpiece. A pneumatic flow away from the tool is established by means of a vacuum source connected to the channel. A pressure transducer is connected to the channel so that it is capable of sensing the pneumatic pressure therein. The transducer produces an electrical output in accordance with the sensed pressure, this electrical output being suitably processed to provide a control signal capable of shutting down the operation of the machine tool and simultaneously providing a warning signal.
    Type: Grant
    Filed: January 16, 1984
    Date of Patent: June 3, 1986
    Assignee: Langan Engineering, Inc.
    Inventor: John D. Langan