Patents by Inventor Kyung S. Chang

Kyung S. Chang 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).

  • Maximum pulse wave amplitude calculating system and operation method for an electronic blood pressure measuring device
    Patent number: 5385149
    Abstract: This invention, which comprises a cuff, an exhaust portion, a pressure sensor, an A/D converter, a microcomputer, a display, and an operation portion, initially determines the maximum pulse wave amplitude by comparing the size of each pulse wave, and it then determines the maximum pulse wave amplitude by comparing the sizes of the values obtained by totalling each pulse wave amplitude along with its preceding and subsequent pulse wave amplitudes, and it finally determines the maximum pulse wave amplitude by evaluating whether the different value between each preceding and each subsequent pulse wave amplitudes which occur after the maximum pulse wave amplitude has a negative(-) sign, thereby eliminating erroneous calculations caused by oscillation noise interference.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: January 31, 1995
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung S. Chang, Sang B. Nam