Patents by Inventor Grahame K. Reynolds

Grahame K. Reynolds 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: 7023259
    Abstract: The present invention discloses a method and system of generating and delivering a high voltage signal without latch-up hazards and without incurring a voltage drop due to the threshold of the switching element. The utilization of NMOS elements when switching a high voltage signal may remove latch-up hazards. Switching of the high voltage signal may be accomplished without incurring a voltage drop in the signal. With multiple transistors, switching of a high voltage signal in accordance with the present invention may provide an output driven to a destination circuit on each phase wherein clock cycles may be overlapping and non-overlapping.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: April 4, 2006
    Assignee: Cypress Semiconductor Corp.
    Inventors: Philip M. Daniell, Grahame K. Reynolds
  • Patent number: 6853218
    Abstract: An apparatus comprising a first arbiter cell, a second arbiter cell and a selection device. The first arbiter cell may be configured to lock if one or more requests are not resolved within a first predetermined time period. The second arbiter cell may be configured to dominate if the first arbiter cell enters a metastable state. The selection device may be configured to provide arbitration between the first and second arbiter cells within a second predetermined time period.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 8, 2005
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6826642
    Abstract: An apparatus comprising a margin logic circuit, one or more discriminator circuits and a sense circuit. The margin logic circuit may be configured to receive a plurality of requests and present one or more control signals. The one or more discriminators may be configured to (i) present one or more leading access signals and (ii) receive the one or more control signals and the plurality of requests. The sense circuit may be configured to receive the one or more leading access signals and the plurality of requests and present grant access signal. The sense circuit may be configured to reduce the effects of metastable conditions.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: November 30, 2004
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6781418
    Abstract: An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to arbitrate a plurality of input request signals and present one or more first control signals. The second circuit may be configured to control the arbitration in response to an adjustable balance point of the input request signals, where the balance point is adjusted to reduce a metastable state of the first circuit.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: August 24, 2004
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6674306
    Abstract: An apparatus comprising a first arbiter cell, a second arbiter cell and a selection device. The first arbiter cell may be configured to lock if one or more requests are not resolved within a first predetermined time period. The second arbiter cell may be configured to dominate if the first arbiter cell enters a metastable state. The selection device may be configured to provide arbitration between the first and second arbiter cells within a second predetermined time period.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: January 6, 2004
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6515517
    Abstract: An apparatus comprising a first one or more threshold devices, a second one or more threshold devices and a logic device. The first one or more threshold devices may be configured to control an output. The second one or more threshold devices may be configured to receive the output. The logic device may be (i) coupled to the second one or more threshold devices and (ii) configured to provide a feedback to the first one or more threshold devices. The feedback may be configured to force a reset condition if a metastable event occurs.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: February 4, 2003
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6498513
    Abstract: An apparatus comprising an arbiter cell and a delay logic circuit. The arbiter cell may be configured to receive a plurality of request signals and provide two or more grant signals. The delay logic circuit may be configured to interface the arbiter cell and force each of the plurality of request signals to be serviced in succession when a metastable state occurs.
    Type: Grant
    Filed: June 7, 2001
    Date of Patent: December 24, 2002
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6314040
    Abstract: A power-on-reset circuit that may be configured to present a power-on-reset signal in response to a voltage. The power-on-reset circuit may comprise a voltage detector, a first analog delay circuit and a feedback loop. The first analog delay circuit may be coupled to an output of the voltage detector. The feedback loop may be coupled an output of the power-on-reset circuit to an input of the power-on-reset circuit.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: November 6, 2001
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds
  • Patent number: 6181628
    Abstract: A power-on-reset circuit that may be configured to present a power-on-reset signal in response to a voltage. The power-on-reset circuit may comprise a voltage detector, a first analog delay circuit and a feedback loop. The first analog delay circuit may be coupled to an output of the voltage detector. The feedback loop may be coupled an output of the power-on-reset circuit to an input of the power-on-reset circuit.
    Type: Grant
    Filed: June 24, 1999
    Date of Patent: January 30, 2001
    Assignee: Cypress Semiconductor Corp.
    Inventor: Grahame K. Reynolds