Patents by Inventor Hongxia Yao

Hongxia Yao 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).

  • Method and apparatus for synthetic transmit aperture imaging
    Patent number: 5951479
    Abstract: An ultrasound imaging system uses a synthetic transmit aperture method with prefocused subapertures. The transmit aperture is divided into several subapertures. Transmission is done sequentially on each subaperture while receiving on the full aperture. The received data sets are then combined using the appropriate delays. In this way the focusing performance of a composite focusing system using a number of focal zones equal to the square of the number of subapertures is achieved. The gain is an increase in the frame rate which is also equal to the number of subapertures used.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: September 14, 1999
    Assignee: General Electric Company
    Inventors: Sverre Holm, Hongxia Yao