Patents by Inventor Leo Chien Chang

Leo Chien 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).

  • Publication number: 20170207549
    Abstract: A differential data cable for high-speed signals includes a connector PCB with angled pads cable connection pads connected to a pair of differential data cable conductors, wherein the symmetrical angled configuration minimizes lead lengths, interface discontinuities, and common mode imbalance. A third pad may be connected to a return signal wire. The connector PCB may have a similar arrangement on the other side, and may have a ground plane in between. The cable may be placed over the ground plane and away from the edge. Pads may have a bump to shorten wire lengths. Wires are glued to the bumps using a UV-curable adhesive. Wires are positioned in an angle with the PCB.
    Type: Application
    Filed: January 20, 2017
    Publication date: July 20, 2017
    Inventors: Leo Chien Chang, Ebrahim Abunasrah
  • Patent number: 6442529
    Abstract: Apparatus and methods are provided for subsidizing Internet access through advertising using a “portal provider” that supplies a “mini-portal” to the users of selected Internet service providers (ISPs). The mini-portal includes communications hardware, for connecting to the Internet, and display software, for displaying advertisements or other messages from local non-volatile storage during idle time, such as when the user's computer is connecting to the Internet. Advertisers are sold access to display their advertisements through the display software, and the revenue thus generated may be used to subsidize providing the mini-portal and Internet access fees. A validation mechanism is provided wherein a validation server operated by the portal provider sends data to the mini-portal that helps keep the advertisements current, and gives the portal provider an ongoing role in providing advertisements to mini-portal users.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: August 27, 2002
    Assignee: Novaweb Technologies, Inc.
    Inventors: Baldev Krishan, Leo Chien Chang, Ronald G. Lambert