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:
Jan. 30, 2001
Filed:
Jul. 01, 1998
Patrick T. Crinion, San Jose, CA (US);
Vickie Pagnon, Sunnyvale, CA (US);
National Semiconductor Corporation, Santa Clara, CA (US);
Abstract
An apparatus for and method of assigning a VLAN tag to a frame received at a port of a switch are disclosed. The apparatus includes a content addressable memory, a data frame memory, a search circuit, and a tagging circuit. The content addressable memory stores tagging information, the tagging information including lookup data and associated tag data. The frame memory stores at least part of a data frame, the part including data frame information. The search circuit is connected to the content addressable memory and the data frame memory. The search circuit reads the data frame information, searches the content addressable memory for the lookup data corresponding to the data frame information, and reads a corresponding subset of the associated tag data. The tagging circuit is connected to the search circuit and the data frame memory. The tagging circuit writes in the data frame memory a VLAN tag including the corresponding subset of the associated tag data.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile