Patents Assigned to Leaf Systems, Inc.
  • Block Caching for Cache-Coherent Distributed Shared Memory
    Publication number: 20110004729
    Abstract: Methods, apparatuses, and systems directed to the caching of blocks of lines of memory in a cache-coherent, distributed shared memory system. Block caches used in conjunction with line caches can be used to store more data with less tag memory space compared to the use of line caches alone and can therefore reduce memory requirements. In one particular embodiment, the present invention manages this caching using a DSM-management chip, after the allocation of the blocks by software, such as a hypervisor. An example embodiment provides processing relating to block caches in cache-coherent distributed shared memory.
    Type: Application
    Filed: December 19, 2007
    Publication date: January 6, 2011
    Applicant: 3Leaf Systems, Inc.
    Inventors: Isam Akkawi, Najeeb Imran Ansari, Bryan Chin, Chetana Nagendra Keltcher, Krishnan Subramani, Janakiramanan Vaidyanathan
  • Quality of service in virtual computing environments
    Patent number: 7711789
    Abstract: Methods and apparatus facilitate the management of input/output (I/O) subsystems in virtual I/O servers to provide appropriate quality of services (QoS). A hierarchical QoS scheme based on partitioning of network interfaces and I/O subsystems transaction types are used to classify Virtual I/O communications. This multi-tier QoS method allows virtual I/O servers to be scalable and provide appropriate QoS granularity.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: May 4, 2010
    Assignee: 3 Leaf Systems, Inc.
    Inventors: Rohit Jnagal, Venkatesh Babu Chitlur Srinivasa
  • Method and apparatus for reducing blooming in output of a CCD image sensor
    Patent number: 5696393
    Abstract: A method and apparatus for reducing bloom in output of a charge coupled device (CCD) image sensor is disclosed. The method includes the step of toggling at least two phases of said CCD after exposure of said CCD. The method and apparatus are particularly useful when a flash of light occurs during the exposure.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: December 9, 1997
    Assignee: Leaf Systems, Inc.
    Inventor: George Michael Blaszczynski
  • Method and apparatus for reducing blooming in output of a CCD image sensor
    Patent number: 5343059
    Abstract: A method and apparatus for reducing bloom in an output of a charge coupled device (CCD) image sensor is disclosed. The method includes the step of toggling at least two phases of said CCD after exposure of said CCD. The method and apparatus are particularly useful when a flash of light occurs during the exposure.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: August 30, 1994
    Assignee: Leaf Systems, Inc.
    Inventor: George M. Blaszczynski