Patents by Inventor Masayuki Hamada, deceased

Masayuki Hamada, deceased 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).

  • FMCW radar and method for estimating distance and relative velocity
    Patent number: 5920280
    Abstract: A relative distance and relative velocity to a target object is accurately estimated even if an error in slopes of the triangular wave modulation, that is unbalanced upward and downward slopes, or error in absolute values in an FMCW radar exists. A first distance estimator estimates a distance up to the target object based on a sum of a beat wave frequency generated between the upward and downward slopes of the triangular wave and an absolute value of an average frequency modulation factor which is a mean value of frequency modulation factors for the upward and downward slopes of the triangular wave, and a first velocity estimator estimates a relative velocity to the target object based on a time difference of the calculated distance.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: July 6, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tsuyoshi Okada, Hisashi Kurokawa, Masayuki Hamada, deceased, Junji Hamada, legal representative