Michael Stephen Jaeger

US Patent:

20080297364, Dec 4, 2008

Filed:

Jun 1, 2007

Appl. No.:

11/809788

Inventors:

Edward E. Soderland - Oak Hill VA, US
Michael S. Jaeger - Oak Hill VA, US

Assignee:

Tellabs Reston, Inc. - Ashburn VA

International Classification:

G08B 21/00

US Classification:

340654

Abstract:

Redundant load sharing power supplies may use lower amperage pilot fuses to monitor the condition of higher amperage main line fuses carrying load current. An alarm monitoring circuit is activated when the pilot fuse has blown. The load sharing characteristics of these supplies may proportion current such that the pilot fuse may not be blown when the main line fuse is missing or blown. An embodiment of the present invention provides a system for ensuring activation of a power distribution alarm monitoring circuit in a load sharing power application using multiple loads to draw current from the power inputs. A control circuit enables current to flow in a controlled manner to blow the pilot fuse to ensure activation of a power distribution alarm monitoring circuit. Ensuring activation of the alarm monitoring circuit allows accurate identification of a faulty supply and satisfies a required operations condition of many telecommunications systems providers.

US Patent:

57683557, Jun 16, 1998

Filed:

May 16, 1996

Appl. No.:

8/649071

Inventors:

William Salibrici - Jobstown NJ
Kishan Shenoi - Saratoga CA
Thomas R. Spadaro - Burlington NJ
Michael S. Jaeger - Marlton NJ

Assignee:

Science Dynamics Corporation - Cherry Hill NJ

International Classification:

H04M 166

US Classification:

379189

Abstract:

Disclosed is a three-way call detection system that uses digital signal processing to identify a third party connection. The disclosed invention operates by establishing a baseline ambient, or background, noise level, and detecting when the signal noise level drops below the ambient noise level. When the current signal noise level drops below the ambient noise level, the system assumes that a three-way conference call has been attempted by the called party.