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. 09, 1999
Filed:
Sep. 11, 1996
Hiroya Egoshi, Kawasaki, JP;
Fujitsu Limited, Kanagawa, JP;
Abstract
An apparatus for establishing synchronization between transmission signals transmitted from a signal source of a sending end to a receiving end via regular and alternative lines in a network using a transmission system such as the SDH and SONET. In the sending end, the present invention inserts a FP signal in the multiplexed information of the signal output from the signal source. On both regular- and alternative-line sides of the receiving end, it detects the pointer in the transmission signals received from the respective lines, separates the multiplexed information from the transmission signal based on the pointer, stores the separated multiplexed information in a memory unit which is capable of varying its storage capacity as specified and reading out the information when a time corresponding to the storage capacity has elapsed after the information is stored, outputs a detection signal when the FP signal is detected in the multiplexed information output from the memory unit, and specifies the storage capacity of at least one of the memory units so that the detection signals occur at the same time.