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. 12, 2006
Filed:
May. 22, 2002
Kenshin Yamada, Tokyo, JP;
Kenshin Yamada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An apparatus for scheduling packets for presenting a plurality of classes, includes (a) a buffer which accumulates received packets in each of the classes, (b) a token administrator which judges whether it is allowed to transmit a packet in each of the classes by virtue of a token associated with each of the classes, (c) a scheduler which determines a class to which a packet to be transmitted belongs, based on the judgment carried out by the token administrator, and (d) a controller which reads a packet of the class determined by the scheduler, out of the buffer, and transmits the thus read-out packet. The token administrator includes a single first circuit for carrying out subtraction of a token and a single second circuit for carrying out addition of a token, and carries out subtraction and addition of a token for each of the classes by means of the single first circuit and the single second circuit.