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:
Mar. 31, 1992
Filed:
Sep. 30, 1988
Applicant:
Inventors:
Yoshinori Bekki, Hadano, JP;
Hiroyuki Wada, Hadano, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ; H04J / ;
U.S. Cl.
CPC ...
370 8515 ; 370 56 ; 370 8512 ; 34082505 ;
Abstract
A line concentrator used in a ring network system which has line concentrators for accommodating ring lobes, and a ring trunk cable connecting adjacent line concentrators, wherein a signal transmitted from an upstream line concentrator is sent via the ring trunk cable to the ring lobes of an immediately downstream line concentrator. The line concentrator is provided with a circuit for regenerating a signal on the ring trunk cable received by the line concentrator, and repeating and sending the regenerated signal to the ring lobes.