Patents by Inventor Yungha Y. Han

Yungha Y. Han 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).

  • Terminal control circuitry with display list processor that fetches instructions from a program memory, character codes from a display memory, and character segment bitmaps from a font memory
    Patent number: 5293587
    Abstract: Display control logic for a terminal controller with support for such features as windows and interlace. A display list processor (DLP) (20) communicates with a program memory (12) containing DLP instructions, a display memory (12) containing character codes and attributes for the display, and a font memory (13). As the DLP program executes, it causes accesses to the display memory and brings in character codes and attributes for ultimate display on the screen. These character codes and attributes, as well as information representative of the scan line are input to a video data queue (95). The queue entries are clocked out of the queue by a character clock (170) and are used to generate addresses to font memory. Bitmaps from font memory are read into a dot shifter (190). The DLP instruction set includes a DISPLAY STRING instruction which allows a portion of a scan line to be built up by specifying the length of the scan line segment and the starting address in memory.
    Type: Grant
    Filed: June 1, 1990
    Date of Patent: March 8, 1994
    Assignee: Chips and Technologies, Inc.
    Inventors: Alak K. Deb, Yungha Y. Han, Morris E. Jones, Jr.