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.

Date of Patent:
Feb. 08, 1994

Filed:

Mar. 17, 1992
Applicant:
Inventors:

Narendra K Bansal, Londonderry, NH (US);

Sid Chaudhuri, East Brunswick, NJ (US);

Shahrukh S Merchant, Londonderry, NH (US);

Donald J Wemple, Plymouth, VT (US);

Assignee:

AT&T Bell Laboratories, Murray Hill, NJ (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
370 16 ; 370108 ; 371-82 ; 340827 ;
Abstract

An errorless line protection apparatus involves receipt of data from an active line and a standby line. A determination is made as to whether the data from the active line leads or lags the data on the standby line. A switching system directs the leading data to a lead channel containing a controllable amount of time delay up to the maximum amount that the leading data is expected to led the lagging data. Lagging data is directed to a lag channel. A selected one of the data from the lead channel or the lag channel is delivered to an output line.


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