Back to results
US 4,973,829 AGranted
Bar code reading method
AssigneeEastman Kodak Company
InventorsYoshitaka Ishida, Masaki Izumi
Life of this patent
Estimating the term…
Abstract
A method of reading bar codes which enables incomplete readings of bar code data produced by excessive misalignment between the bar code and the bar code scanning line to be assembled automatically into a complete reading of the bar code data. This is done by combining incomplete data obtained by multiple passes of the read scanner, using a superimposition technique.
Claims2
A method of bar code reading in which a scanner sequentially scans and reads data from a bar code, comprising the steps of:
- (a) storing incomplete data from a scan that includes either a start mark or a stop mark in a master memory;
- (b) storing data read in succeeding scans in a transaction memory;
- (c) comparing incomplete data stored in the master memory and read data stored in the transaction memory, superimposing coincident parts thereof and storing such coincident parts in the master memory as composite data;
- and
- (d) repeating steps a-c until the composite data includes a start mark and a stop mark.
2 more elements
Dependencies are inferred from the claim text.