Patents by Inventor Asif Qayyum

Asif Qayyum 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).

  • Dual mode-increment/decrement N-bit counter register
    Patent number: 4706266
    Abstract: A counter cell for counting either up or down by one or two includes a multiplexer section, an increment/decrement section, and a carry section. The multiplexer section is responsive to control signals and input carry signals for generating a count signal which determines the counting by one or two. The increment/decrement section is responsive to count signal and an increment strobe signal for generating an incremented output signal and a decremented output signal. The carry section is responsive to the increment/decrement section and the input carry signals for generating a carryout-by-one signal and a carryout-by-two signal. A number of these counter cells are arrayed to form an N-bit counter.
    Type: Grant
    Filed: November 5, 1986
    Date of Patent: November 10, 1987
    Assignee: Advanced Micro Devices, Inc.
    Inventor: Asif Qayyum