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. 06, 2013
Filed:
Nov. 22, 2011
Kazuhiro Watanabe, Yokohama, JP;
Yoshihiro Ashi, Yokohama, JP;
Takayuki Kanno, Yokohama, JP;
Masayuki Takase, Fujisawa, JP;
Kazuhiro Watanabe, Yokohama, JP;
Yoshihiro Ashi, Yokohama, JP;
Takayuki Kanno, Yokohama, JP;
Masayuki Takase, Fujisawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Packet transfer device and method have both a processing procedure for uninterruptible-switching desiring packets and a processing procedure for low-delay desiring packets, and process each user packet according to a desired one of the processing procedures. The uninterruptible-switching desiring packets are set to be in phase by a delay unit and written into an uninterruptible-switching memory. The low-delay desiring packets are written into a low-delay memory without passing trough the delay unit, that is, without being delayed. A read-out controller reads out a packet from the uninterruptible-switching memory. When the read-out packet is an uninterruptible-switching desiring packet, the packet is directly output, and when the read-out packet is a low-delay desiring packet, the packet is discarded, and a low-delay desiring packet is read out from the low-delay memory and output.