Patents by Inventor Simon D. Forey

Simon D. Forey 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).

  • Patent number: 6747504
    Abstract: A control slew rate output driver has a plurality of component drivers that are switched on in turn to provide an edge on the output. A control circuit provides a series of respective control signals component drivers, which are correspondingly switched on in turn. The control circuit takes a signal, preferably a data signal, and supplies it in parallel to a plurality of delay buffers, which delay the data signal by different amounts to produce the control signals for the component drivers. The delay buffers are voltage controlled and the control voltage for each is provided by a respective tap of a voltage divider. The current passes through the voltage divider can be changed to change the control voltages and, hence, the overall rise or fall time provided by the output driver.
    Type: Grant
    Filed: August 19, 2002
    Date of Patent: June 8, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Richard D. Simpson, Jonathan P. Milton, Simon D. Forey
  • Publication number: 20030117197
    Abstract: A control slew rate output driver has a plurality of component drivers that are switched on in turn to provide an edge on the output. A control circuit provides a series of respective control signals component drivers, which are correspondingly switched on in turn. The control circuit takes a signal, preferably a data signal, and supplies it, in parallel to a plurality of delay buffers, which delay the data signal by different amounts to produce the control signals for the component drivers. The delay buffers are voltage controlled and the control voltage for each is provided by a respective tap of a voltage divider. The current passes through the voltage divider can be changed to change the control voltages and, hence, the overall rise or fall time provided by the output driver.
    Type: Application
    Filed: August 19, 2002
    Publication date: June 26, 2003
    Inventors: Richard D. Simpson, Jonathan P. Milton, Simon D. Forey