Patents Assigned to Vialta, Inc.
  • System and method for noise reduction using bi-orthogonal modified discrete cosine transform
    Patent number: 6636830
    Abstract: The invention provides a perceptual audio signal compression system and method. One aspect of the invention described herein includes transforming the signal into a plurality of bi-orthogonal modified discrete cosine transform (BMDCT) frequency coefficients using a bi-orthogonal modified discrete cosine transform; quantizing the BMDCT frequency coefficients to produce a set of integer numbers which represent the BMDCT frequency coefficients; and encoding the set of integer numbers to lower the number of bits required to represent the BMDCT frequency coefficients.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: October 21, 2003
    Assignee: Vialta Inc.
    Inventors: John Peter Princen, Ming Hong Chan
  • Video phone
    Patent number: D475985
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: June 17, 2003
    Assignee: Vialta, Inc.
    Inventors: Ennin Huang, Fred Chan, Didier Pietri, Edward Chan
  • Video phone
    Patent number: D487435
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: March 9, 2004
    Assignee: Vialta, Inc.
    Inventors: Ennin Huang, Fred Chan, Didier Pietri, Edward Chan