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. 22, 2009
Filed:
Oct. 26, 2004
Craig Glenn Fujikami, Honolulu, HI (US);
William Thomas Hatley, San Jose, CA (US);
Jocelyn Tamie Kunimitsu, Honolulu, HI (US);
Jon Kanji Otaguro, Honolulu, HI (US);
Carl Masami Uyehara, Kaneohe, HI (US);
Craig Glenn Fujikami, Honolulu, HI (US);
William Thomas Hatley, San Jose, CA (US);
Jocelyn Tamie Kunimitsu, Honolulu, HI (US);
Jon Kanji Otaguro, Honolulu, HI (US);
Carl Masami Uyehara, Kaneohe, HI (US);
Spirent Communications Inc., Calabasas, CA (US);
Abstract
Information is added to an encapsulated payload in a data field of a frame subsequently to placing a checksum into a checksum field of a header encapsulating the payload, wherein the checksum has been determined from byte values of the header and the payload, yet having the checksum remaining detectable as valid upon interpretation of the header and the payload. A signature field that contains the information is inserted into the data field. The signature field has a checksum cheater subfield. A one's complement of a checksum determined from byte values of the information is then placed into the checksum cheater subfield. Accordingly, the checksum in the checksum field of the header remains valid.