Patents by Inventor Marc J. L. Gillet

Marc J. L. Gillet 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).

  • Prolog interrupt processing
    Patent number: 5396632
    Abstract: An improved architecture for a Prolog interpreter/compiler is described to facilitate interrupt processing. The new architecture employs interrupt control words and a set of interrupt control blocks to enhance Prolog processing. As interrupts are detected, an interrupt control word is loaded with the address of an interrupt control block for managing interrupt processing. Then, each time a new predicate is fired, the interrupt control word is tested and control is passed to the interrupt processing routine if the control word is non-zero.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: March 7, 1995
    Assignee: International Business Machines Corporation
    Inventor: Marc J. L. Gillet
  • Prolog addressing
    Patent number: 5386520
    Abstract: An improved technique for processing Prolog objects is described. The first bit of the Prolog object word is used as a flag to indicate whether the object word is a type pointer or type descriptor. If the one-bit flag indicates that the object word is a type pointer, then the address is available for immediate processing without the unnecessary processing associated with the prior art.
    Type: Grant
    Filed: August 27, 1992
    Date of Patent: January 31, 1995
    Assignee: International Business Machines Corporation
    Inventor: Marc J. L. Gillet
  • Method and system for eliminating operation codes from intermediate prolog instructions
    Patent number: 5274820
    Abstract: An improved architecture for a Prolog interpreter is described. Implicit arguments are substituted for classical explicit arguments. The implicit arguments are supported by preassigned register allocation managed by the interpreter. The interpreter also exploits improved Prolog Object processing in which the first bit of the Prolog object word is used as a flag to indicate whether the object word is a type pointer or type descriptor. Significant improvements in interpreter execution result from the usage of these techniques.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: December 28, 1993
    Assignee: International Business Machines Corporation
    Inventor: Marc J. L. Gillet