3/13/2024 0 Comments Barcodes clipartThe plates were read by a trackside scanner, located for instance, at the entrance to a classification yard, while the car was moving past. Two plates were used per car, one on each side, with the arrangement of the colored stripes encoding information such as ownership, type of equipment, and identification number. Developed by General Telephone and Electronics (GTE) and called KarTrak ACI (Automatic Car Identification), this scheme involved placing colored stripes in various combinations on steel plates which were affixed to the sides of railroad rolling stock. An early use of one type of barcode in an industrial context was sponsored by the Association of American Railroads in the late 1960s. However, it took over twenty years before this invention became commercially successful. The invention was based on Morse code that was extended to thin and thick bars. The barcode was invented by Norman Joseph Woodland and Bernard Silver and patented in the US in 1952 (US Patent 2,612,994). Later application software became available for devices that could read images, such as smartphones with cameras. Initially,were only scanned by special optical scanners called barcode readers. Later, two-dimensional (2D) variants were developed, using rhexagons and other geometric patterns, called matrix codes barcodes, although they do not use bars as such. Traditional barcodes systematically represent data by varying the widths and spacings of parallel lines, and may be referred to as linear or one-dimensional (1D). A barcode (also bar code) is an optical, machine-readable representation of data the data usually describes something about the object that carries the barcode.
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