Patents by Inventor Tobin E. Farand

Tobin E. Farand 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).

  • Video apparatus employing VRAMs
    Patent number: 4884069
    Abstract: A video card using VRAMs for a computer which includes a CPU and main memory. The VRAM addresses are generated in a manner making it unnecessary to have an integer number of scan lines per memory row. A counter keeps track of the shift register position in the VRAMs and a new row address is generated in hardware independent of the scan line. A look-ahead feature detects the approaching end of the shift register data and initiates a timing sequence to reload the shift register.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: November 28, 1989
    Assignee: Apple Computer, Inc.
    Inventor: Tobin E. Farand