Steven P Webster

US Patent:

6446102, Sep 3, 2002

Filed:

May 21, 1999

Appl. No.:

09/316892

Inventors:

David L. Kryger - Chelmsford MA
Steven Webster - Raymond NH

Assignee:

Schneider Automation, Inc. - North Andover MA

International Classification:

G06F 501

US Classification:

708208, 341 96

Abstract:

A method and a device for high-speed scale conversion wherein a value N within a range of N1 and N2 is converted into a small value M within a range of M1 and M2. The method includes the step of obtaining an approximate value of M by loading the value (N-N1+2 ) into a multi-bit shift register and right-shifting p bits. A binary search process is then used to determine the error value between the actual value of M and the approximate value of M. By avoiding actual multiplication processes, the conversion can be carried out using low-cost electronic hardware such as a microprocessor or a PROM to carry out the binary search process, a shift-register to obtain the approximate value of M, a multiplexer to receive an analog input data N and an A/D converter to convert the analog input data N into a digital data N.

US Patent:

48925080, Jan 9, 1990

Filed:

Jun 13, 1989

Appl. No.:

7/365380

Inventors:

Robert Ryan - Ashby MA
Steven Webster - Newburyport MA
Richard Prouty - Gloucester MA
Peter Rosa - Norwell MA

International Classification:

F16H 704
B61B 1200

US Classification:

474101

Abstract:

An improved safety control mechanism for a pulley apparatus of the type comprising main support bars having at least two wheels mounted at their centers a spaced distance apart between the bars and a swing arm assembly pivotally connected to the bars at a point between the centers of the wheels, the swing arm assembly comprising a pair of arms straddling opposing surfaces of the bars and pivotally connected to the bars by a main pivot mechanism extending through complementary aligned apertures in the arms and the bars, the improvement comprising a second bolt mechanism extending through a second complementary aperture disposed in either the bars or the arms and a slot disposed in the other of the bars or the arms; the second aperture or the slot provided in the bars being disposed in the second distance between the center mountings of the wheels; the second aperture or the slot provided in the arms being aligned with the other of the second aperture or the slot provided in the bars with the arms and the bars connected by the main pivot bolt; the slot having an arcuate engagement surface which follows the pivot of the arms and engages the second bolt mechanism against detachment of the arms upon failure of the main pivot bolt; the second aperture and the slot being disposed around the complementary aligned apertures through which the main pivot bolt extends.

US Patent:

20180012052, Jan 11, 2018

Filed:

Mar 20, 2017

Appl. No.:

15/463119

Inventors:

- Natick MA, US
Xiangyun Ye - Framingham MA, US
James A. Negro - Arlington MA, US
David Vekony - Budapest, HU
Robb Robles - Wilsonville OR, US
Jozsef Borovszki - Budapest, HU
Steven G. Webster - Tigard OR, US

International Classification:

G06K 7/14
H01L 21/00

Abstract:

Systems and methods are described for acquiring and decoding a plurality of images. First images are acquired and then processed to attempt to decode a symbol. Contributions of the first images to the decoding attempt are identified. An updated acquisition-settings order is determined based at least partly upon the contributions of the first images to the decoding attempt. Second images are acquired or processed based at least partly upon the updated acquisition-settings order.