Patents by Inventor Nengtan Lin

Nengtan Lin 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).

  • Image compression system and method
    Patent number: 6738074
    Abstract: A method for generating image compression quantization matrices is disclosed. A method includes a step of locating a frequency coefficient (120) within a transform array (107). A method also includes a step determining a frequency content (122) for the frequency coefficient (120). Method also includes the step of determining the orientation content for the frequency coefficient (120). The method also includes the step of selecting a quantization matrix (110) correlating to the frequency content (122) and the orientation content. The method also includes the step of quantizing the transform array (107) with the quantization matrix (110).
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: May 18, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Kashipati G. Rao, Nengtan Lin
  • Method and system for generating image compression quantization matrices
    Patent number: 6687412
    Abstract: A system (100) for generating image compression matrices is disclosed. The present invention includes an image (102) having pixel block arrays (104). The present invention also includes a transformer (106) that performs discrete cosine transforms on the pixel block arrays (104) to generate a discrete cosine transform array (107). The present invention also includes a quantizer (108) that receives the discrete cosine transform array (107) and retrieves a quantization coefficient matrix (110) and a model metric (112). Quantizer (108) partitions the quantization coefficient matrix (110) with the model metric (112) to generate a quantization matrix (115). Quantizer (108) also quantizes discrete cosine transform array (107) with the quantization matrix (115) to create a quantized array (117). The present invention also includes an encoder (120) that compresses the quantized array (117).
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: February 3, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Kashipati G. Rao, Nengtan Lin
  • Image compression system and method
    Publication number: 20020071611
    Abstract: A method for generating image compression quantization matrices is disclosed. A method includes a step of locating a frequency coefficient (120) within a transform array (107). A method also includes a step determining a frequency content (122) for the frequency coefficient (120). Method also includes the step of determining the orientation content for the frequency coefficient (120). The method also includes the step of selecting a quantization matrix (110) correlating to the frequency content (122) and the orientation content. The method also includes the step of quantizing the transform array (107) with the quantization matrix (110).
    Type: Application
    Filed: December 8, 2000
    Publication date: June 13, 2002
    Inventors: Kashipati G. Rao, Nengtan Lin