Patents by Inventor Samson Y. Ng

Samson Y. Ng 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).

  • Hybrid image compressor
    Patent number: 6163625
    Abstract: A source image (101) consisting of more than one type of image is efficiently compressed. The source image (101) is divided into regions, and each region is assigned to one image type. Separate images (105) based on each image type are constructed from those regions belonging to that image type. These separate images (105) are compressed using schemes optimized for the image type. Later these compressed images are decompressed and reassembled into a reproduction (108) of the original source image (101).
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: December 19, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Samson Y. Ng, Bruce E. Hochuli, David H. Elrod
  • Image discriminator
    Patent number: 6097845
    Abstract: A system and method for discriminating among image characteristics in order to select among a plurality of compression techniques. Multiple compression schemes are applied to a source image (101) concurrently and the results are stored. Image discrimination is performed in parallel with the image compression to generate a recommendation regarding the stored compressed images.
    Type: Grant
    Filed: October 21, 1997
    Date of Patent: August 1, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Samson Y. Ng, Bruce E. Hochuli
  • In situ primary froth quality measurements using microwave monitor
    Patent number: 5376276
    Abstract: Aerated bitumen froth containing bitumen, water, air and solids is the product of the hot water extraction process for recovering bitumen from oil sand. Measurements related to the water content of the froth can be obtained by measuring its resonant frequency in a calibrated output, open-ended microwave cavity. By also measuring the bulk density of the froth and assuming a constant relationship for the solids content, one can compute from the assembled data the output quality of the froth. The measurements can be taken repetitively at the vessel as the froth is produced and used to almost instantly provide froth quality information.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: December 27, 1994
    Assignees: Alberta Energy Company, Ltd., Canadian Occidental Petroleum Ltd., Esso Resources Canada Limited, Gulf Canada Resources Limited, Her Majesty the Queen in right of the Province of Alberta as represented by the Minister of Energy and Natural Resources, Hbog-Oil Sands Limited Partnership, Pancanadian Petroleum Limited, Petro-Canada Inc., Mocal Energy Limited, Murphy Oil Company Ltd.
    Inventors: Keng H. Chung, Gordon R. Thompson, Wayne B. Jansen, Ethel A. Nakano, Samson Y. Ng