Patents by Inventor Edison Chang

Edison 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: 20050092846
    Abstract: A simulation SmartMedia/xD-Picture memory card capable of using various kinds of non-volatile memory has at least one non-volatile memory chip for storing data; a card interface and a controller. The card interface is defined with command, data and address signal for enabling an external host computer to access the data in the non-volatile memory chip. The controller is used for interpreting a command sent from the host computer and changing an address sent from the host computer to a valid address for the non-volatile memory chip to go to the non-volatile memory chip to write, read or delete the data.
    Type: Application
    Filed: June 29, 2004
    Publication date: May 5, 2005
    Applicants: C-One Technology Corporation, Pretec Electronics Corporation
    Inventors: Robin Lai, Edison Chang, Gordon Yu
  • Patent number: 6735643
    Abstract: An electronic card with dynamic memory allocation management is provided, which requires only one single memory by utilizing a dynamic memory controller having a selector and a first, a second and a third base registers. A first DMA controller provides an output address added to the first base register for performing data access. A micro-controller provides an output address added to the second base register for performing data access. A second DMA controller provides an output address added to the third base register for performing data access. When the micro-controller, the first DMA controller or the second DMA controller issues an access request to the memory, the dynamic memory controller selects one of the micro-controller, and the first and second DMA controllers to access the memory based on a sequence of the access requests.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: May 11, 2004
    Assignees: C-One Technology Corp., Pretec Electronics Corp.
    Inventors: Edison Chang, Ellope Shiue, Sidney Young
  • Publication number: 20040034728
    Abstract: There is provided an electronic card with extending pins for being inserted into a host. The electronic card has a plurality of front pins for providing standard power supply, data, address and control connections. The electronic further provides and a plurality of extending pins alternatively arranged with the plurality of front pins for providing a plurality of extending functions, wherein at least one extending pin is an identifying pin for enabling the host to identify whether the electronic card has extending pins.
    Type: Application
    Filed: January 22, 2003
    Publication date: February 19, 2004
    Applicants: C-One Technology Corporation, Pretec Electronics Corporation
    Inventors: Jung Ta Chang, Ping-Chang Liu, Chien-Chih Tseng, Edison Chang
  • Publication number: 20030221027
    Abstract: An electronic card with dynamic memory allocation management is provided, which requires only one single memory by utilizing a dynamic memory controller having a selector and a first, a second and a third base registers. A first DMA controller provides an output address added to the first base register for performing data access. A micro-controller provides an output address added to the second base register for performing data access. A second DMA controller provides an output address added to the third base register for performing data access. When the micro-controller, the first DMA controller or the second DMA controller issues an access request to the memory, the dynamic memory controller selects one of the micro-controller, and the first and second DMA controllers to access the memory based on a sequence of the access requests.
    Type: Application
    Filed: May 22, 2002
    Publication date: November 27, 2003
    Applicants: C-One Technology Corp, Pretec Electronics Corp
    Inventors: Edison Chang, Ellope Shiue, Sidney Young