Patents by Inventor John S. Chen

John S. Chen 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: 20070273589
    Abstract: A communications device operates in a wireless local area network (WLAN), and includes a processor operating in accordance with an operating system that includes a standardized set of object identifiers (OIDs) associated therewith. An antenna steering algorithm is executed by the processor for generating a driver query. A driver generates an antenna query in response to the driver query. A smart antenna is driven by the driver and generates antenna beams for receiving signals, and generates metrics based upon the received signals. The smart antenna provides to the driver a metric associated with the antenna query. The driver associates the metric received from the smart antenna with one of the object identifiers from the standardized set of object identifiers, and provides the same to the antenna steering algorithm.
    Type: Application
    Filed: May 23, 2006
    Publication date: November 29, 2007
    Inventors: John S. Chen, Inhyok Cha, Richard Simeon, Daniel P. Steinbach
  • Patent number: 7295711
    Abstract: One embodiment of the invention relates to a method of merging segments to form supersegments in an image. The image consists of a plurality of segments that are constituent portions of the image. At least one candidate segment(s) and at least one neighboring segment(s) for each candidate segment are identified. An error statistic for each pair, consisting of a candidate segment and a corresponding neighboring segment, is computed. A neighboring segment is determined that results in a smallest error statistic for a given candidate segment. A determination is also made as to whether the smallest error statistic is sufficiently small to merit merging of the corresponding pair of segments. The corresponding pair of segments is merged to create one supersegment. The supersegment is a new segment including all pixels formerly contained in one of the two segments that were merged.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: November 13, 2007
    Assignee: Altera Corporation
    Inventors: Sachin Ahuja, Gavin B. Horn, Michael Fleisher, John S. Chen, Adityo Prakash, Edward R. Ratner
  • Patent number: 6898240
    Abstract: One embodiment comprises a method for image processing. The method includes identifying an uncovered region in an image, determining at least one trivalent point, and extrapolating from the trivalent point to extend an edge of at least one of the image segments into the uncovered region. Another embodiment comprises an apparatus for image processing. The apparatus includes a predictor for predicting higher-frequency boundary information in newly uncovered regions. Another embodiment comprises a system for efficiently communicating video information. The system includes an encoder that encodes a video frame into an encoded frame, and a decoder that receives and decodes the encoded frame, wherein the encoder and decoder are both configured to identify uncovered regions and to extend edges from neighboring image segments into the uncovered region.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: May 24, 2005
    Assignee: PTS Corporation
    Inventors: Adityo Prakash, Eniko F. Prakash, Edward Ratner, John S. Chen
  • Patent number: 6778698
    Abstract: An image segmenter uses one or more techniques to accurately segment an image, including the use of a progressive flood fill to fill incompletely bounded segments, the use of a plurality of scaled transformations and guiding segmentation at one scale with segmentation results from another scale, detecting edges using a composite image that is a composite of multiple color planes, generating edge chains using multiple classes of edge pixels, generating edge chains using the plurality of scaled transformations, and/or filtering spurious edges at one scale based on edges detected at another scale.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: August 17, 2004
    Assignee: PTS Corporation
    Inventors: Adityo Prakash, Edward R. Ratner, John S. Chen, David L. Cook
  • Publication number: 20040001539
    Abstract: The present invention can be used to perform training using secondary data. In one embodiment the present invention includes receiving a communications signal of a communications channel, where the communications signal has a primary and a secondary data segment both communicating information, and determining a parameter of the communications channel using the secondary data segment. In another embodiment of the present invention, the communications signal can also include a training segment containing a known training signal.
    Type: Application
    Filed: June 26, 2002
    Publication date: January 1, 2004
    Inventors: Sundar G. Sankaran, Paul Petrus, Mitchell D. Trott, John S. Chen
  • Publication number: 20030133426
    Abstract: Embodiment of the present invention can be used to select random access channels to be assigned to user terminals. In one embodiment, the invention includes a base station receiving a signal from a second radio, the received signal containing information about the second radio, and selecting one or more channels to be used by the second radio for random access to the base station using the information about the second radio. Then the base station sends a signal to the second radio, the sent signal containing information about the selected one or more channels.
    Type: Application
    Filed: August 14, 2002
    Publication date: July 17, 2003
    Inventors: Brett Schein, John S. Chen
  • Publication number: 20030067901
    Abstract: In one embodiment, the present invention comprises transmitting a broadcast burst in a broadcast channel from a base station of a radio communications system. The invention further comprises receiving a request burst from a user terminal, and transmitting a message burst from the base station to the user terminal from which the request was received. The message burst includes a description of the channels available on the radio communications system for receiving messages from user terminals.
    Type: Application
    Filed: June 20, 2002
    Publication date: April 10, 2003
    Inventors: Brett Schein, Mitchell D. Trott, John S. Chen
  • Publication number: 20020131639
    Abstract: One embodiment comprises a method for image processing. The method includes identifying an uncovered region in an image, determining at least one trivalent point, and extrapolating from the trivalent point to extend an edge of at least one of the image segments into the uncovered region. Another embodiment comprises an apparatus for image processing. The apparatus includes a predictor for predicting higher-frequency boundary information in newly uncovered regions. Another embodiment comprises a system for efficiently communicating video information. The system includes an encoder that encodes a video frame into an encoded frame, and a decoder that receives and decodes the encoded frame, wherein the encoder and decoder are both configured to identify uncovered regions and to extend edges from neighboring image segments into the uncovered region.
    Type: Application
    Filed: March 7, 2002
    Publication date: September 19, 2002
    Inventors: Adityo Prakash, Eniko Fodor, Edward Ratner, John S. Chen
  • Patent number: 5116630
    Abstract: This invention provides a process for the deagglutinaton or denaturation of natural gluten and dietary products containing large quantities of wheat gluten. New dietary products containing large quantities of wheat gluten are disclosed. The formulation is based on the principle of the poor hydrolytic activity of pepsin and tripsin in cooked gluten to provide a dietary and product. A process for the denaturation of natural gluten is also disclosed which heats gluten at temperatures below 110+ C.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: May 26, 1992
    Inventors: John S. Chen, Maria G. Menesini Chen