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. 14, 1998
Filed:
Aug. 17, 1995
Applicant:
Inventors:
F Christian Rehl, Medway, MA (US);
Mark D Polomski, Hollis, NH (US);
Assignee:
VideoServer, Inc., Burlington, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
395283 ; 395281 ; 395308 ; 395309 ; 395311 ; 39518205 ; 39518206 ; 39518301 ;
Abstract
An apparatus and method for replacing circuit boards in a live communication system having an over-the-top ribbon cable data bus configuration. The ribbon cables are segmented and redirected between individual circuit boards and a backplane data bus. Each ribbon cable connects either directly to the backplane or to an interposer board coupled between the circuit board and the backplane. Isolation circuitry either on the backplane or on the interposer board isolates clock and data signals between the backplane and a circuit board selected for replacement.