Patents by Inventor Colin A. Davidson

Colin A. Davidson 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).

  • Combinational logic feedback circuit to ensure correct power-on-reset of a four-bit synchronous shift register
    Patent number: 5940345
    Abstract: A combinational logic feedback circuit ensures correct power-on-reset of a 4-bit synchronous shift register used to generate a plurality of page select signals. The combinational circuit monitors the plurality of page select signals and asserts an invalidity signal when an invalid state is detected. A deglitch circuit inhibits or suppresses glitches which may be output from the combinational circuit due to state transitions of one or more of the page select signals. The deglitch circuit generates in response thereto a reset signal which is applied to the synchronous shift register to reset the shift register to output a valid state.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: August 17, 1999
    Assignee: Cypress Semiconductor Corp.
    Inventor: Colin A. Davidson