Patents by Inventor Leonard M. Napolitano, Jr.

Leonard M. Napolitano, Jr. 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: 5471623
    Abstract: The Lambda network is a single stage, packet-switched interprocessor communication network for a distributed memory, parallel processor computer. Its design arises from the desired network characteristics of minimizing mean and maximum packet transfer time, local routing, expandability, deadlock avoidance, and fault tolerance. The network is based on fixed degree nodes and has mean and maximum packet transfer distances where n is the number of processors. The routing method is detailed, as are methods for expandability, deadlock avoidance, and fault tolerance.
    Type: Grant
    Filed: February 26, 1991
    Date of Patent: November 28, 1995
    Inventor: Leonard M. Napolitano, Jr.
  • Patent number: 5291496
    Abstract: An internally fault-tolerant data error detection and correction integrated circuit device (10) and a method of operating same. The device functions as a bidirectional data buffer between a 32-bit data processor and the remainder of a data processing system and provides a 32-bit datum is provided with a relatively short eight bits of data-protecting parity. The 32-bits of data by eight bits of parity is partitioned into eight 4-bit nibbles and two 4-bit nibbles, respectively. For data flowing towards the processor the data and parity nibbles are checked in parallel and in a single operation employing a dual orthogonal basis technique. The dual orthogonal basis increase the efficiency of the implementation. Any one of ten (eight data, two parity) nibbles are correctable if erroneous, or two different erroneous nibbles are detectable. For data flowing away from the processor the appropriate parity nibble values are calculated and transmitted to the system along with the data.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: March 1, 1994
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: David D. Andaleon, Leonard M. Napolitano, Jr., G. Robert Redinbo, William O. Shreeve