Patents by Inventor Keith R. Schakel

Keith R. Schakel 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: 10013371
    Abstract: A memory circuit system and method are provided in the context of various embodiments. In one embodiment, an interface circuit remains in communication with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for performing various functionality (e.g. power management, simulation/emulation, etc.).
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: July 3, 2018
    Assignee: Google LLC
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 9727458
    Abstract: A memory circuit system and method are provided. An interface circuit is capable of communication with a plurality of memory circuits and a system. In use, the interface circuit is operable to translate an address associated with a command communicated between the system and the memory circuits.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 8, 2017
    Assignee: Google Inc.
    Inventors: David T. Wang, Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, Frederick Daniel Weber
  • Patent number: 9632929
    Abstract: A memory circuit system and method are provided. An interface circuit is capable of communication with a plurality of memory circuits and a system. In use, the interface circuit is operable to translate an address associated with a command communicated between the system and the memory circuits.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: April 25, 2017
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20170075831
    Abstract: A memory circuit system and method are provided in the context of various embodiments. In one embodiment, an interface circuit remains in communication with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for performing various functionality (e.g. power management, simulation/emulation, etc.).
    Type: Application
    Filed: November 22, 2016
    Publication date: March 16, 2017
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 9542352
    Abstract: A memory circuit system and method are provided. An interface circuit is capable of communication with a plurality of memory circuits and a system. In use, the interface circuit is operable to interface the memory circuits and the system for reducing command scheduling constraints of the memory circuits.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: January 10, 2017
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 9542353
    Abstract: A memory circuit system and method are provided. An interface circuit is capable of communication with a plurality of memory circuits and a system. In use, the interface circuit is operable to interface the memory circuits and the system for reducing command scheduling constraints of the memory circuits.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 10, 2017
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 9507739
    Abstract: A memory circuit system and method are provided in the context of various embodiments. In one embodiment, an interface circuit remains in communication with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for performing various functionality (e.g. power management, simulation/emulation, etc.).
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: November 29, 2016
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20160048466
    Abstract: A memory circuit system and method are provided in the context of various embodiments. In one embodiment, an interface circuit remains in communication with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for performing various functionality (e.g. power management, simulation/emulation, etc.).
    Type: Application
    Filed: October 26, 2015
    Publication date: February 18, 2016
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 9171585
    Abstract: A memory circuit system and method are provided in the context of various embodiments. In one embodiment, an interface circuit remains in communication with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for performing various functionality (e.g. power management, simulation/emulation, etc.).
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: October 27, 2015
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastien Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 9047976
    Abstract: A system and method are provided. In use, at least one of a plurality of memory circuits is identified. In association with the at least one memory circuit, a power saving operation is performed and the communication of a signal thereto is delayed.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: June 2, 2015
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8949519
    Abstract: A system and method are provided for simulating an aspect of a memory circuit. Included is an interface circuit that is in communication with a plurality of memory circuits and a system. Such interface circuit is operable to interface the memory circuits and the system for simulating at least one memory circuit with at least one aspect that is different from at least one aspect of at least one of the plurality of memory circuits. In accordance with various embodiments, such aspect may include a signal, a capacity, a timing, and/or a logical interface.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: February 3, 2015
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8868829
    Abstract: A method includes presenting multiple memory circuits to a system as a virtual memory circuit having at least one characteristic that is different from a corresponding characteristic of one of the physical memory circuits; receiving, at an interface circuit, a first command issued from the system to the virtual memory circuit; and in response to receiving the first command, 1) directing a copy of the first command to a first physical memory circuit of the multiple physical memory circuits, and 2) performing a power-saving operation on at least one other physical memory circuit of the multiple physical memory circuits.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: October 21, 2014
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8797779
    Abstract: A memory module, which includes at least one memory stack, comprises a plurality of DRAM integrated circuits and an interface circuit. The interface circuit interfaces the memory stack to a host system so as to operate the memory stack as a single DRAM integrated circuit. In other embodiments, a memory module includes at least one memory stack and a buffer integrated circuit. The buffer integrated circuit, coupled to a host system, interfaces the memory stack to the host system so to operate the memory stack as at least two DRAM integrated circuits. In yet other embodiments, the buffer circuit interfaces the memory stack to the host system for transforming one or more physical parameters between the DRAM integrated circuits and the host system.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: August 5, 2014
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael J. S. Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20140192583
    Abstract: A memory circuit system and method are provided in the context of various embodiments. In one embodiment, an interface circuit remains in communication with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for performing various functionality (e.g. power management, simulation/emulation, etc.).
    Type: Application
    Filed: November 26, 2013
    Publication date: July 10, 2014
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastien Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8773937
    Abstract: An apparatus includes multiple first memory circuits, in which the multiple first memory circuits are positioned on at least one dual in-line memory module (DIMM). The apparatus includes an interface circuit operable to interface the first memory circuits with a system; present the first memory circuits to the system as one or more simulated second memory circuits; transmit, in response to receiving a first refresh control signal sent from the system to the one or more simulated memory circuits, multiple second refresh control signals to the first memory circuits; and apply a respective delay to each second refresh control signal transmitted to a corresponding first memory circuit. Each simulated second memory circuit has a corresponding second memory capacity that is greater than a first memory capacity of at least one of the first memory circuits.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: July 8, 2014
    Assignee: Google Inc.
    Inventors: Keith R. Schakel, Suresh Natarajan Rajan, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8745321
    Abstract: An apparatus includes multiple first memory circuits, each first memory circuit being associated with a first memory standard, where the first memory standard defines a first set of control signals that each first memory circuit circuits is operable to accept. The apparatus also includes an interface circuit coupled to the first memory circuits, in which the interface circuit is operable to emulate at least one second memory circuit, each second memory circuit being associated with a second different memory standard.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 3, 2014
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8671244
    Abstract: An apparatus includes multiple first memory circuits, each first memory circuit being associated with a first memory standard, where the first memory standard defines a first set of control signals that each first memory circuit circuits is operable to accept and defines a first version of a protocol. The apparatus also includes an interface circuit coupled to the first memory circuits, in which the interface circuit is operable to emulate at least one second memory circuit, each second memory circuit being associated with a second different memory standard. The second different memory standard defines a second set of control signals that the emulated second memory circuit is operable to accept and defines a second different version of a protocol. Both the first version of the protocol and the second different version of the protocol are associated either with DDR2 dynamic random access memory (DRAM) or with DDR3 DRAM.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: March 11, 2014
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8667312
    Abstract: A memory circuit power management system and method are provided. An interface circuit is in communication with a plurality of memory circuits and a system. In use, the interface circuit is operable to perform a power management operation in association with only a portion of the memory circuits.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: March 4, 2014
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8601204
    Abstract: A memory apparatus includes multiple memory circuits an interface circuit having one or more first components of a first type and one or more second components of a second type different from the first type, each of the one or more first components and second components being electrically couplable to a host system. The interface circuit is operable to present to the host system a simulated memory circuit where there is a difference in at least one aspect between the simulated memory circuit and at least one memory circuit of the plurality of memory circuits. The at least one aspect includes a timing that relates to a refresh operation latency, in which each memory circuit of the plurality of memory circuits is electrically coupled to at least one first component and to at least one second component.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: December 3, 2013
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 8595419
    Abstract: A memory apparatus includes multiple memory circuits and an interface circuit to present to a host system emulated memory circuits. The interface circuit includes a first component of a first type and a second component of a second type, the first component and the second component being operable to present a host-system interface to the host system and to present a memory-circuit interface to the plurality of memory circuits, in which there is a difference in at least one aspect between the host-system interface and the memory circuit interface. At least one of the first and second components is operable to identify one or more memory circuits that is not being accessed and to perform a power-saving operation on the one or more memory circuits identified as not being accessed, where the power-saving operation includes placing the memory circuits identified as not being accessed in a precharge power down mode.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: November 26, 2013
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber