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:
Oct. 20, 1998
Filed:
Mar. 11, 1996
Keiichi Okuyama, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A termination cross-connect device, receiving the first and second digital signals from the previous cross-connect device through different routes, checks whether the sink-side J1 identification is included in the first and second digital signals. When it is included, the termination cross-connect device adjusts a phase difference between the first and second digital signals based on the J1 byte such that the first and second digital signals coincide in phase with each other. After the first and second digital signals coincide in phase with each other, the hitless switching is performed from the first path to the second path. Not only a route length delay differences but also interconnection delays developed in the previous cross-connect device may be canceled out by performing the delay adjustment when the cross-connect switch of the previous cross-connect device is active but when it is inactive.