Methods to determine and selectively sample positive and negativ

Details Methods to determine and selectively sample positive and negativ Methods to determine and selectively sample positive and negativ

1997-05-12

1999-12-14

Hajec, Donald

Registers

Coded record sensors

Particular sensor structure

23546225, G06K 710

Patent

active

060006161

ABSTRACT:
Methods and associated apparatus are provided to analyze and selectively sample scan reflectance profile (SRP) signals by producing corresponding first derivative and second derivative signals, as the SRP signal is generated. The methods employ the occurrences of zero crossings of the first and or second derivative signals, along with occurrences of the level of the first derivative signal rising above, or dropping below, predefined positive or negative threshold levels, respectively. Sample values, including positive and negative peak sample values, are produced and made available for post processing to determine one or more figures of merit (or quality parameters) that are indicative of the quality of a bar code indicia that was scanned to generate the SRP signal analyzed and processed.

REFERENCES:
patent: 4000397 (1976-12-01), Hebert et al.
patent: 4219152 (1980-08-01), Couch et al.
patent: 4517455 (1985-05-01), Benitez, III et al.
patent: 4740675 (1988-04-01), Brosnan et al.
patent: 4798943 (1989-01-01), Cherry
patent: 5061843 (1991-10-01), Sato et al.
patent: 5103080 (1992-04-01), Barken
patent: 5140146 (1992-08-01), Metlitsky et al.
patent: 5272323 (1993-12-01), Martino
patent: 5294783 (1994-03-01), Hammond, Jr. et al.
patent: 5463211 (1995-10-01), Arends et al.
patent: 5484994 (1996-01-01), Routstaei
patent: 5557094 (1996-09-01), Barken
patent: 5633488 (1997-05-01), Spitz
American National Stndards Institute (ANSI), "Bar Code Print Quality Guideline", ANSI X3. 182--1990, Mar. 1990.
Uniform Code Council, "Quality Specification for the UPC Printed Symbol" [Not Submitted--Multiplicity of Above Item`AN`], Sep. 1994.

Affiliated with

Also associated with

Rating

Methods to determine and selectively sample positive and negativ does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods to determine and selectively sample positive and negativ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods to determine and selectively sample positive and negativ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-855893