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:
Apr. 04, 2006
Filed:
Nov. 02, 2001
Koichi Hata, Katano, JP;
Akihiro Miyazaki, Sakai, JP;
Koji Imura, Machida, JP;
Daiji Ido, Yokohama, JP;
Koichi Hata, Katano, JP;
Akihiro Miyazaki, Sakai, JP;
Koji Imura, Machida, JP;
Daiji Ido, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Abstract
A transmission end (header compression end) and a reception end (header decompression end) share the same timestamp calculation information which is previously prepared. At the transmission end, in the case that the timestamp of the current packet to be subjected to header compression cannot be compressed with the current timestamp calculation information, the history record which covers timestamp calculation information previously transmitted is referred to for determining whether to transmit a packet header carrying the timestamp without updating the current timestamp calculation information, or a packet header carrying the timestamp by updating the current timestamp calculation information.