Patents by Inventor Jian C. Huang

Jian C. Huang 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 delivering messages to portable communication units in a radio communication system
    Patent number: 5475863
    Abstract: A method of locating a portable communication unit (108) having a transmitter (852) for transmitting acknowledge back signals, consists of the steps of transmitting, to the portable communication unit (108) from the communication cell transmitters (104), an information signal which consists of a predetermined color code word which identifies a subset of the communication cells (500) for which radio coverage does not overlap; receiving an acknowledge back signal from the portable communication unit (108) consisting of a reported color code value determined from the color code word transmitted in the information signal; and analyzing the reported color code value to determine a cell location of the portable communication unit (108).
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: December 12, 1995
    Assignee: Motorola, Inc.
    Inventors: Floyd Simpson, David F. Willard, Jian C. Huang