Patents by Inventor Michael J. Horowitz

Michael J. Horowitz 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: 8004575
    Abstract: Methods and systems for automatically detecting the presence or absence of a bright object in the field of view of a video camera and/or for adaptively modifying video camera exposure level. A video camera system may be configured to enter and exit an adaptive exposure modification mode upon detection of the presence of a bright object in the field of view of a video camera.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: August 23, 2011
    Assignee: UTC Fire & Security Americas Corporation, Inc.
    Inventors: Joseph M. Justiss, Michael J. Horowitz
  • Patent number: 7885535
    Abstract: Methods and systems for estimating the amount of visible light in a light source using an image sensor, e.g., such as an image sensor of the type commonly found in color video cameras. The methods and systems may be implemented to use information about the normalized differences of three color components contained in a light source in conjunction with a measure of total light energy of the light source in order to estimate the amount of visible light present in light received by the image sensor from a light source.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: February 8, 2011
    Assignee: UTC Fire & Security Americas Corporation Inc.
    Inventors: Michael J. Horowitz, Joseph M. Justiss
  • Patent number: 7782940
    Abstract: Disclosed herein in one embodiment is an adaptive coding threshold algorithm for a videoconference system which alleviates problems due to the erroneous recoding of stationary areas of images caused by image noise. The algorithm, which is preferably implementable on a videoconference encoder, assesses the coding parameters for a current macroblock and the coding parameters for that same macroblock the last time it was coded. If for both macroblocks the coding was non-intra, with a [0,0] motion vector, and with a low quantization parameter, a determination is made that the current macroblock depicts a stationary image. Accordingly, the algorithm increases the coding threshold (T1) for the blocks within that macroblock, so that it becomes more difficult for those particular blocks to be recoded. This renders the block with stationary content less susceptible to erroneous recoding, while preserving system bandwidth and improving image quality.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: August 24, 2010
    Assignee: Polycom, Inc.
    Inventors: Mohammad Athar Shah, Michael J. Horowitz
  • Patent number: 5581608
    Abstract: A method apparatus for selectively passing various types of telephony information between a data communications port on a digital telephone and a computer run application program. In one embodiment, the application program can select a subset of telephony events by way of a telephony command to the telephone's data communication port. This command is processed by a telephony command processor within the data communications controller which, in turn, sets a programmable event mask within the telephone. In response to the event mask being set, only the selected telephony events are spontaneously reported to the host computer and application program.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: December 3, 1996
    Assignee: Rolm Systems
    Inventors: Elie A. Jreij, Tave P. Dunn, Michael J. Horowitz, Peter E. Gersing, Robert D. Whittington, Werner Huber
  • Patent number: 5495528
    Abstract: The present invention is a digital telephone control interface system that provides a programmable control to the keys of a digital feature telephone. The programmable control selectively masks the keys present on a telephone and prevents masked keys from being directly responded to by the telephone or routed to the telephone switching network. While the keys are masked, the programmable control can suppress, delay, modify or enhance the key events produced by the masked keys as directed by the application software being run by the programmable control.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: February 27, 1996
    Assignee: Rolm Systems
    Inventors: Tave P. Dunn, Elie A. Jreij, Jack D. Collins, Michael J. Horowitz