The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2007
Filed:
Nov. 15, 2002
James P. Durbano, Ridley Park, PA (US);
Dennis W. Prather, Landenberg, PA (US);
James P. Durbano, Ridley Park, PA (US);
Dennis W. Prather, Landenberg, PA (US);
EM Photonics, Inc., Newark, DE (US);
Abstract
The present invention is directed to an apparatus and methods that facilitate implementation of a practical Finite-Difference-Time-Domain (FDTD) hardware accelerator. The apparatus and methods of the present invention increase speed, reduce memory requirements, and/or simplify a FDTD hardware implementation. This is accomplished by providing one, some, or all of the following: a reformulated FDTD method to simplify the hardware implementation; a memory look-up table (MLUT) to decrease memory requirements; customized, floating-point arithmetic units optimized for speed to decrease execution time; a memory switching unit (MSU) that coordinates multiple memory reads and writes from/to multiple random access memories (RAMs) to simplify control; a data dependence unit (DDU) that determines all dependencies associated with a given calculation to simplify control; and/or a control unit based on a global counter to simplify control.