Registers – Coded record sensors – Particular sensor structure
Patent
1994-04-29
1995-11-21
Hajec, Donald
Registers
Coded record sensors
Particular sensor structure
235463, G06K 710
Patent
active
054689465
ABSTRACT:
This is a bar code decoding method and apparatus that decodes the bar codes from digital video data. The apparatus will decode multi-level bar codes, as well as bi-level bar codes, but only a single format bar code at any given time. Data acquisition is via an optical scanner that generates a data signal that is converted into a run-length pixel count of pixels per bar or space. An array of twelve latches sequentially stores the run-length data while a programmable, high-speed math module sums the pixel count for a predetermined number of elements. Multi-level thresholds are established and the pixel count of a given element is compared to a multiple range of pixel counts used to define the number of modules per element. The module count of each element is compared to a predetermined start or stop code pattern. Look-up tables are then used for character decoding based on the module count of each element after the start code has been detected.
REFERENCES:
patent: 4567361 (1986-01-01), Rosenthal
patent: 4687912 (1987-08-01), Ohta
patent: 4873426 (1989-10-01), Sarno et al.
patent: 4992650 (1991-02-01), Somerville
patent: 5077463 (1991-12-01), Sato
patent: 5142130 (1992-08-01), Sato
patent: 5196685 (1993-03-01), Izumi
patent: 5210397 (1993-05-01), Eastman
Arndt Dennis R.
Eastman Kodak Company
Hajec Donald
Wigmore Steven
LandOfFree
Method and apparatus for decoding multi-level bar codes or bi-le 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 and apparatus for decoding multi-level bar codes or bi-le, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for decoding multi-level bar codes or bi-le will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1139018