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:
Nov. 06, 2001
Filed:
Sep. 02, 1998
Address match determining device, communication control system, and address match determining method
Yukio Fujisawa, Hyogo, JP;
Kazutoshi Miyamoto, Hyogo, JP;
Christoph Gottschalk, Alsdorf, DE;
Hans-Michael Loch, Ratingen, DE;
Abstract
An address match determining device has an address filter memory (,) for storing a matrix or table having a plurality of elements each of which is a 1-bit address match determination data indicating whether or not a corresponding N-bit address code is available, and is distinguished by a pair of a first index composed of the m most significant or high-order m bits of the corresponding address code and a second index composed of the remaining lowest or low-order (N−m) bits of the corresponding address code. A received-address latch (,) extracts the high-order m bits and remaining low-order (N−m) bits from an address code latched thereinto. The device searches through the table for one 1-bit address match determination data specified by the first index composed of the extracted high-order m bits and the second index composed of the extracted low-order (N−m) bits, and then determines whether or not the latched address is available on the basis of the 1-bit address match determination data searched for.