DAVID J DAVIS, D.C.
Chiropractic at Court St, Clearwater, FL

License number

Florida CH 11342

Professional information

Non-Logic Printed Wiring Board Test System

US Patent:

4012625, Mar 15, 1977

Filed:

Sep 5, 1975

Appl. No.:

5/610581

Inventors:

Russell H. Bowen - Seminole FL
Allen L. Clark - Odessa FL
David C. Davis - Clearwater FL
Walter E. Gilbert - Largo FL
Wayne L. Glover - Odessa FL
Richard J. Walsh - Brooksville FL
Robert G. Wehling - Tampa FL

Assignee:

Honeywell Information Systems, Inc. - Waltham MA

International Classification:

G01R 3100

US Classification:

235153AC

Abstract:

An automatic printed circuit board tester to test printed circuit boards and diagnose faults in digital and analog electrical circuit networks is disclosed. The system is comprised of control, stimuli, and interconnection networks in combination with measuring instrumentation. For automated fault isolation, a moving probe assembly driven by stepping motors controlled by a minicomputer is utilized. The fault isolation system establishes a fault path from an output pin to a terminal point within the network. The location of the terminal point together with a directed graph is utilized to select branches that could cause the failure.

Forward Error Correction Hardware For A Data Adaptor

US Patent:

4644543, Feb 17, 1987

Filed:

Sep 26, 1984

Appl. No.:

6/654825

Inventors:

David C. Davis - Clearwater FL

Assignee:

Honeywell Inc. - Minneapolis MN

International Classification:

G06F 1110

US Classification:

371 37

Abstract:

An apparatus and a method is disclosed for correcting on-line error corrections in the digital transmission of voice or data utilizing forward error correction technique which avoids on-line calculations of the Massey or Berlekamp algorithms and the Chien search that it entails, and permits a simple hardware apparatus comprised of a ROM, shift registers, and exclusive OR gates, thus eliminating the requirement of a dedicated massive computer.