Patents by Inventor Jack E. Greenbaum

Jack E. Greenbaum 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: 6077315
    Abstract: A compiling system and method generates a sequence of program instructions for use in a partially reconfigurable processing unit, a portion of the processing unit having a hardware organization that is selectively reconfigurable during execution of the sequence of program instructions among a plurality of configurations, and a portion of the processing unit having a non-reconfigurable hardware organization, each configuration comprising a computational unit optimized for performing a class of computations. A compiler selectively compiles high-level source code statements for execution using configurations of the reconfigurable portion of the processing unit responsive to meta-syntax compiler directives. A linker creates object files that optionally encapsulate bitstreams specifying hardware organizations corresponding to the configurations.
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: June 20, 2000
    Assignee: Ricoh Company Ltd.
    Inventors: Jack E. Greenbaum, Michael A. Baxter
  • Patent number: 5933642
    Abstract: A compiling system and method for generating a sequence of program instructions for use in a dynamically reconfigurable processing unit having an internal hardware organization that is selectively changeable among a plurality of hardware architectures, each hardware architecture executing instructions from a corresponding instruction set. Source files are compiled for execution using various instruction set architectures as specified by reconfiguration directives. Object files optionally encapsulate bitstreams specifying hardware architectures corresponding to instruction set architectures with executable code for execution on the architectures.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: August 3, 1999
    Assignees: Ricoh Corporation, Ricoh Company Ltd.
    Inventors: Jack E. Greenbaum, Michael A. Baxter
  • Patent number: 5734866
    Abstract: For FPGAs and other logic devices using four-input function generators, several combinations of primitive functions are provided for mapping hardware descriptions of logic designs into the FPGAs or logic devices. Automatic tools using this library will reliably produce dense designs when implemented in coarse-grained architectures.
    Type: Grant
    Filed: July 18, 1995
    Date of Patent: March 31, 1998
    Inventor: Jack E. Greenbaum