Method of collecting and adjusting bar code data from a laser ba

Details Method of collecting and adjusting bar code data from a laser ba Method of collecting and adjusting bar code data from a laser ba

1994-11-28

1997-03-04

Shepperd, John

Registers

Coded record sensors

Particular sensor structure

G06K 710

Patent

active

056082002

ABSTRACT:
A method is disclosed for processing bar code data obtained from a bar code label including large and small bars. A light source such as a laser beam scans across the symbol on a bar code label. Light reflected from the bar code label is collected as the light source scans across the label. The collected light varies in intensity as the light source scans across the label. An electrical signal is generated which is indicative of the amplitude of the light collected in the collecting step. The electrical signal is sampled at a predetermined data rate to produce a sequence of samples representative of the electrical signal. A sequence of samples is stored in a memory. These stored samples include label space values (LSA's). The samples also include label bar values (LBA's) which include large bar values and small bar values. The sequence of samples is decoded. The label space reflectance (LSR) is determined by dividing the product of the calibration space reflectance (CSR) and a label space value (LSA) by the calibration space average (CSA). The disclosed method also provides for the normalization of label bar values (LBA's).

REFERENCES:
patent: 4251798 (1981-02-01), Swartz et al.
patent: 4360798 (1982-11-01), Swartz et al.
patent: 4508686 (1985-04-01), Shaber et al.
patent: 4705939 (1987-11-01), Ulinski, Sr.
patent: 4860226 (1989-08-01), Martin et al.
patent: 5218190 (1993-06-01), Hardesty et al.
patent: 5235056 (1994-02-01), Tedesco et al.
patent: 5369264 (1994-11-01), Rosa et al.
patent: 5406062 (1995-04-01), Hasegawa et al.

Affiliated with

Also associated with

Rating

Method of collecting and adjusting bar code data from a laser ba does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of collecting and adjusting bar code data from a laser ba, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of collecting and adjusting bar code data from a laser ba will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2147744