John Mardirosian

US Patent:

46481001, Mar 3, 1987

Filed:

Mar 28, 1985

Appl. No.:

6/717288

Inventors:

John Mardirosian - Acton MA

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

H03D 322
H04L 2722

US Classification:

375 86

Abstract:

A carrier recovery circuit which phase aligns receiver-generated, quadrature-related carrier signals to incoming modulated, quadrature-related carrier signals is disclosed. The amplitudes of these modulated carriers determine data points in a signal-space diagram. In the carrier recovery circuit, the amplitude of each of said modulated carrier signals is sensed relative to thresholds which pass through the outermost data points in the signal-space diagram. These outermost data points form a periphery when interconnected by straight lines which encompass all of the data points. A phase error signal is generated which maintains phase alignment of the receiver-generated carriers to the incoming carriers when the sensed amplitudes fall in selected regions of the signal-space diagram lying outside of the aforementioned periphery.

US Patent:

20160030758, Feb 4, 2016

Filed:

Mar 14, 2014

Appl. No.:

14/776793

Inventors:

- AE Eindhoven, NL
William Douglas GRUBE - Windham NH, US
John MARDIROSIAN - Westford MA, US
Scott Alan WUTHRICH - Reading MA, US
Simon Edward KOZIN - Medford MA, US

International Classification:

A61N 1/39

Abstract:

A device () which includes a monitoring unit (), a therapy unit (), and a display () that includes a touch screen (). The monitoring unit () can be configured to monitor a person's vital signs, such as a person's electrocardiogram (ECG). The therapy unit () can be configured to administer an electric shock. The display () can be configured to display the ECG and enable a user to scroll the displayed ECG back and forth and/or to zoom in and zoom out the displayed ECG by touching the touch screen (). The display () can also be configured to enable the user to select two or more separate segments of the ECG to view together at the same time on the display (), which segments can be separated by intervening segments of the ECG that can be hidden from being viewed on the display (). The display () can have multiple user-interface windows (). One window () can be configured to only display functions related to the monitor unit () and/or the therapy unit (), while another window () can be configured to display software applications, including an electronic patient care record (ePCR) application.