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:
Apr. 24, 2007
Filed:
Sep. 18, 2002
Hidetoshi Shinoda, Tokyo, JP;
Hidetoshi Shinoda, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A multiplex transmission system according to the invention includes a transmitter and a receiver. The transmitter is provided with an idle frame inserting unit that inserts a specific idle frame different from an idle frame inserted into a surplus band of another signal into a surplus band of a predetermined signal and generates an internal signal, a multiplexing unit that multiplexes internal signals by time division and generates a multiplexed signal and a framing unit that transmits the multiplexed signal to a transmission line interface. The receiver is provided with a frame synchronizing unit that establishes synchronization of a transmission line interface and detects a multiplexed signal acquired by multiplexing internal signals acquired by converting signals by time division, a channel identifying unit that detects the specific idle frame in the multiplexed signal and specifies a position multiplexed by time division of each internal signal based upon a position of the specific idle frame, a demultiplexing unit that demultiplexes the internal signals, an idle frame extracting unit that removes the idle frame from the internal signal and a channel processing receiving unit that restores the internal signal from which the idle frame is extracted to a signal.