Patents by Inventor Suresh Natarajan Rajan

Suresh Natarajan Rajan 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: 7761724
    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: April 29, 2008
    Date of Patent: July 20, 2010
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7730338
    Abstract: A memory circuit power management system and method are provided. In use, an interface circuit is 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 autonomously performing a power management operation in association with at least a portion of the memory circuits.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: June 1, 2010
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7724589
    Abstract: A system and method are provided for delaying a signal communicated from a system to a plurality of memory circuits. Included is a component in communication with a plurality of memory circuits and a system. Such component is operable to receive a signal from the system and communicate the signal to at least one of the memory circuits after a delay. In other embodiments, the component is operable to receive a signal from at least one of the memory circuits and communicate the signal to the system after a delay.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: May 25, 2010
    Assignee: Google Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20090285031
    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: Application
    Filed: July 22, 2009
    Publication date: November 19, 2009
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7609567
    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 31, 2006
    Date of Patent: October 27, 2009
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7590796
    Abstract: A memory circuit power management system and method are provided. In use, an interface circuit is in communication with a plurality of physical memory circuits and a system. The interface circuit is operable to interface the physical memory circuits and the system for simulating at least one virtual memory circuit with a first power behavior that is different from a second power behavior of the physical memory circuits.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: September 15, 2009
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20090216939
    Abstract: One embodiment of the present invention sets forth an abstracted memory subsystem comprising abstracted memories, which each may be configured to present memory-related characteristics onto a memory system interface. The characteristics can be presented on the memory system interface via logic signals or protocol exchanges, and the characteristics may include any one or more of, an address space, a protocol, a memory type, a power management rule, a number of pipeline stages, a number of banks, a mapping to physical banks, a number of ranks, a timing characteristic, an address decoding option, a bus turnaround time parameter, an additional signal assertion, a sub-rank, a number of planes, or other memory-related characteristics. Some embodiments include an intelligent register device and/or, an intelligent buffer device. One advantage of the disclosed subsystem is that memory performance may be optimized regardless of the specific protocols used by the underlying memory hardware devices.
    Type: Application
    Filed: February 14, 2009
    Publication date: August 27, 2009
    Inventors: Michael J.S. Smith, Suresh Natarajan Rajan, David T. Wang
  • Patent number: 7580312
    Abstract: A power saving system and method are provided. In use, at least one of a plurality of memory circuits is identified that is not currently being accessed. In response to the identification of the at least one memory circuit, a power saving operation is initiated in association with the at least one memory circuit.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: August 25, 2009
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7581127
    Abstract: A memory circuit power management system and method are provided. In use, an interface circuit is 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 a power management operation in association with at least a portion of the memory circuits. Such power management operation is performed during a latency associated with one or more commands directed to at least a portion of the memory circuits.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: August 25, 2009
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20090024789
    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 30, 2007
    Publication date: January 22, 2009
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20090024790
    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 30, 2007
    Publication date: January 22, 2009
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7472220
    Abstract: A memory circuit power management system and method are provided. In use, an interface circuit is 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 communicating a first number of power management signals to at least a portion of the memory circuits that is different from a second number of power management signals received from the system.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: December 30, 2008
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20080239858
    Abstract: A memory circuit power management system and method are provided. In use, an interface circuit is 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 autonomously performing a power management operation in association with at least a portion of the memory circuits.
    Type: Application
    Filed: April 29, 2008
    Publication date: October 2, 2008
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20080239857
    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.
    Type: Application
    Filed: April 29, 2008
    Publication date: October 2, 2008
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7392338
    Abstract: A memory circuit power management system and method are provided. In use, an interface circuit is 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 autonomously performing a power management operation in association with at least a portion of the memory circuits.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: June 24, 2008
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Patent number: 7386656
    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.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: June 10, 2008
    Assignee: MetaRAM, Inc.
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20080133825
    Abstract: A memory subsystem is provided including an interface circuit adapted for coupling with a plurality of memory circuits and a system. The interface circuit is operable to interface the memory circuits and the system for emulating 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. Such aspect includes a signal, a capacity, a timing, and/or a logical interface.
    Type: Application
    Filed: October 30, 2007
    Publication date: June 5, 2008
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20080126687
    Abstract: A memory subsystem is provided including an interface circuit adapted for communication with a system and a majority of address or control signals of a first number of memory circuits. The interface circuit includes emulation logic for emulating at least one memory circuit of a second number.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 29, 2008
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20080123459
    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: Application
    Filed: October 26, 2006
    Publication date: May 29, 2008
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber
  • Publication number: 20080126689
    Abstract: A memory subsystem is provided including an interface circuit adapted for communication with a system and a majority of address or control signals of a first number of memory circuits. The interface circuit includes emulation logic for emulating at least one memory circuit of a second number.
    Type: Application
    Filed: October 30, 2007
    Publication date: May 29, 2008
    Inventors: Suresh Natarajan Rajan, Keith R. Schakel, Michael John Sebastian Smith, David T. Wang, Frederick Daniel Weber