Steven M 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:

20150347802, Dec 3, 2015

Filed:

Aug 10, 2015

Appl. No.:

14/821920

Inventors:

Xianju Wang - Bedford 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

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.