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:
Dec. 25, 2007
Filed:
Jun. 15, 2004
Daisuke Kobayashi, Yokohama, JP;
Hirofumi Yagawa, Yokohama, JP;
Toshinobu Tsunematsu, Yokohama, JP;
Katsuhiko Hirashima, Yokohama, JP;
Yoshinari Sugimoto, Yokohama, JP;
Daisuke Kobayashi, Yokohama, JP;
Hirofumi Yagawa, Yokohama, JP;
Toshinobu Tsunematsu, Yokohama, JP;
Katsuhiko Hirashima, Yokohama, JP;
Yoshinari Sugimoto, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A frame transmission device which does not require a separate supervisory line and enables supervisory frames to efficiently enter subscriber traffic for transmission without securing a fixed bandwidth. A supervisory token computing section gives supervisory frames supervisory tokens as permission to transmit within a minimum bandwidth. Subscriber token computing sections give subscriber frames subscriber tokens as permission to transmit within respective set transmission bandwidths. A best-effort token computing section gives the frames best-effort tokens as permission to transmit by using an extra bandwidth. The supervisory or subscriber tokens are given to read frames from a supervisory queue or subscriber queues, and if a frame queue length is smaller than or equal to the best-effort tokens remains in the queue, a queue read control section reads and outputs the remaining frames from the queue by using the extra bandwidth of best-effort tokens.