RICHARD T ELLISON, M.D.
Osteopathic Medicine in Worcester, MA

License number

Massachusetts 75165

Organization information

See more information about RICHARD T ELLISON at bizstanding.com

Richard T Ellison Iii MD

55 Lk Ave N, Worcester, MA 01655

Categories:

Infectious Disease Physicians & Surgeons

Phone:

(508) 856-3158 (Phone)

U Mass Memorial Medical Center - Richard T Ellison MD

119 Belmont St #J2, Worcester, MA 01605

Categories:

Infectious Disease Physicians & Surgeons

Phone:

(508) 334-8515 (Phone)

Professional information

Professor Of Medicine At Umass Medical School

Position:

Hospital Epidemiologist at UMass Memorial Medical Center, Professor of Medicine at UMass Medical School

Location:

Greater Boston Area

Industry:

Hospital & Health Care

Work:

UMass Memorial Medical Center since 2002 - Hospital Epidemiologist UMass Medical School since 1996 - Professor of Medicine UMass Medical School 1991 - 1996 - Associate Professor of Medicine University of Colorado Denver 1990 - 1991 - Associate Professor of Medicine Department of Veterans Affairs Medical Center - Denver, CO 1983 - 1991 - Infectious Disease Physician University of Colorado Denver 1984 - 1990 - Assistant Professor of Medicine

Education:

University of Colorado Health Sciences Center 1981 - 1983
Infectious Disease Fellowship Rhode Island Hospital 1977 - 1980
Hahnemann Medical College 1973 - 1977
Doctor of Medicine (MD) University of Virginia 1969 - 1973
Bachelor's degree

Richard Ellison, Worcester MA

Work:

Umass Memorial Medical Center - Memorial Campus
119 Belmont St, Worcester, MA 01605 Umass Memorial Medical Group
55 Lake Ave N, Worcester, MA 01655

Richard T Ellison, Worcester MA

Specialties:

Infectious Disease Specialist

Address:

55 Lake Ave N, Worcester, MA 01655

Analog Signal Verification Circuit

US Patent:

4552992, Nov 12, 1985

Filed:

Dec 12, 1983

Appl. No.:

6/560237

Inventors:

Edward Bruckert - Maynard MA
David Conroy - Acton MA
Richard Ellison - Worcester MA
Martin Minow - Arlington MA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

H04L 2502, G06F 1546

US Classification:

178 69G

Abstract:

The present system employs a high speed digital signal processor which is programmed to generate pairs of digitized waveforms, each pair representing a pair of different frequencies in response to coded input signals. Each pair of different digitized waveforms, when converted and combined into an analog signal, represents a "tone pair" as used in major telephone systems. The tone pairs are transmitted through an anti-aliasing filter circuit and therefrom through amplification circuitry to a tone pair decoder of the type used in major telephone systems. At the tone pair decoder the tone pair signals are reconverted into binary signals. The binary signals from the tone pair decoder are transmitted to a data processor in the system under test, whereat they may or may not be further decoded. Ultimately the binary signals are compared with the coded input signals originally sent. In this way, the system which is designed to handle digital signals and which is designed to handle digital to analog conversions, is tested.

Telephone Line Interface Option Module

US Patent:

4788717, Nov 29, 1988

Filed:

Mar 17, 1988

Appl. No.:

7/170664

Inventors:

Dennis R. Blanchard - Hampstead NH
Edward A. Bruckert - Maynard MA
David G. Conroy - Maynard MA
Richard D. Ellison - Worcester MA
Anthony J. Vitale - Northboro MA

Assignee:

Digital Equipment Corporation - Maynard MA

International Classification:

H04M 1100

US Classification:

379 98

Abstract:

36 Telephone interface option module circuit for interfacing an electronic device to a telephone network. Most electronic devices, for example, modems, telephone message systems and text-to-speech systems, when coupled to a telephone network must conform to specific telephone interconnect regulations. These regulations generally vary from country to country, and therefore, the electronic device generally has to be modified to conform to a specific countries telephone regulations. The option module circuit contains the country specific telephone regulations, and when plugged into the electronic device, ensures that the electronic device conforms to those regulations.