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:
May. 12, 2009
Filed:
Sep. 13, 2005
Takashi Usukura, Tokyo, JP;
Takashi Usukura, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A gateway apparatus includes a packet transmitting unit, duplicate packet detecting unit, and time measuring unit. The packet transmitting unit transmits to a counter apparatus the first packet that coincides with a packet transmitted immediately before reception of a delay measurement instruction for an IP (Internet Protocol) network between the gateway apparatus and the counter apparatus connected via the IP network. The duplicate packet detecting unit detects the second packet that is transmitted from the counter apparatus in response to reception of the first packet and coincides with a packet transmitted immediately before reception of the first packet. The time measuring unit measures the time until the duplicate packet detecting unit detects the second packet after the packet transmitting unit transmits the first packet. A communication system, delay measurement method, and recording medium are also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile