Registers – Records – Particular code pattern
Patent
1995-04-18
1996-01-16
Shepperd, John
Registers
Records
Particular code pattern
235454, G06K 1906
Patent
active
054850002
ABSTRACT:
A filing system is provided for locating a particular file contained in a file holder which contains a plurality of files. The apparatus includes a machine-readable code mounted on each of the files, a guide attached to each file holder, a scanner for reading the codes on the files in a file holder, and an indicator for indicating when the particular machine-readable code corresponding to the particular file is located. The apparatus uses an improved bar code in which character boundaries are eliminated and the numbers of ONE's and ZERO's in a code are variable, resulting in increased data density. The unique numeric values which result from the improved bar code sparsely populate the possible range of values, and therefore a mapping algorithm is provided to map the bar code values to a sequential numeric system for case of use. The improved bar code system uses repeating basic patterns of bars separated by a MARK bar, and a basic pattern can be reconstructed if the scan view includes only one MARK bar surrounded by ONE and ZERO bars. The improved apparatus also utilizes an inventive perpendicular file tab which positions the bar code accurately for the scanner. Border bars are provided to allow the scanner to separate bar codes from each other and to aid in determining if a bar code is defective or damaged.
REFERENCES:
patent: 4263504 (1981-04-01), Thomas
patent: 5287414 (1994-02-01), Foster
Lee Michael G.
Shepperd John
Wild File, Inc.
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