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:
Feb. 11, 2003
Filed:
Oct. 20, 1998
Koji Arai, Kawasaki, JP;
Gen Nakagawa, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A transmission path interface apparatus compatible with a CSMA mode capable of responding to a fault occurring in a transmission path flexibly and at a high speed, including a transmission unit for holding serial transmission information and transmitting a frame modulated by both of the transmission information and a preamble to a CSMA mode transmission path; a reception unit for taking out a loopback frame transmitted by an opposing node in accordance with that frame, restoring the transmission information contained in this, and holding the same; a collision decision unit for determining a correlation between transmission information held by the transmission unit and the reception unit and notifying a result of this to an information source of transmission information; and a collision decision acceleration unit for comparing an elapsed time from a timing when the information source gave the transmission information to the transmission unit to a timing when the transmission information contained in the loopback frame is restored and a threshold value indicating the maximum time of a delay allowed with respect to the transmission of the frame containing the following transmission information and notifying the information source that the former exceeds the latter.