Patents by Inventor David Ronny Dwin

David Ronny Dwin 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).

  • Device for protecting selected information in multi-media workstations
    Patent number: 5986676
    Abstract: The display buffer of a multimedia workstation is partitioned into a display section and a non-display section. The information to be displayed on the display screen is arranged in the display section of the display buffer. An image or shadow of the display section is written in the non-display section (called a lock buffer) of the display buffer. Prior to updating the display section, a controller reads the protection data from the lock buffer and generates control signals which inhibit the writing of data into protected areas of the display section.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: November 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: David Ronny Dwin, William Robert Lee, David William Nuechterlein, Paul Stewart Yosim
  • Device for protecting selected information in multi-media workstations
    Patent number: 5764964
    Abstract: The display buffer of a multimedia workstation is partitioned into a display section and a non-display section. The information to be displayed on the display screen is arranged in the display section of the display buffer. An image or shadow of the display section is written in the non-display section (called a lock buffer) of the display buffer. Prior to updating the display section, a controller reads the protection data from the lock buffer and generates control signals which inhibit the writing of data into protected areas of the display section.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: June 9, 1998
    Assignee: International Business Machines Corporation
    Inventors: David Ronny Dwin, William Robert Lee, David William Nuechterlein, Paul Stewart Yosim