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:
Sep. 21, 1999
Filed:
Sep. 27, 1996
Jon Ashor Loschke, Austin, TX (US);
Charley Michael Parks, Austin, TX (US);
Mark Franklin, Austin, TX (US);
Kenneth Wade Jones, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A circuit and method is provided for implementing a content addressable memory circuit (100) in which an output word is produced which corresponds to the content of a reference word containing an ATM header. According to a first aspect, a binary search logic circuit (104) binarily searches the memory array (101) to find a match word whose content is equal to that of the reference word. Output signals indicate either that a match has been found or that the binary searching of the memory array (101) should continue at addresses either above or below the location address of the match word. According to a second aspect, the content addressable memory circuit (100) performs a concurrent search of switching identifiers, virtual circuit identifiers and virtual path identifiers, to determine if a virtual path connection or virtual circuit connection exists for an ATM header.