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:
Aug. 16, 2011
Filed:
May. 19, 2005
Kenji Tomizawa, Kanagawa, JP;
Kenji Tomizawa, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A filtering apparatus which includes first filters assigned first numbers different from each other and which detect packets having a previously specified identifiers. The apparatus includes information registers disposed in correspondence with the first filters and which store a predetermined number of bits, and includes a condition storage portion that stores second numbers different from each other and section conditions associated with the second numbers. The apparatus includes a determination portion that determines a number range specifying a part of the second numbers for each first filter as not overlapping each other based on the first numbers of each first filter and selects a second number from each number range per first filter based on values of bits in each information register, and a second filter that checks whether the packet detected by each first filter satisfies the section condition associated with the second number determined for each first filter.