High density two dimensional bar code symbology

Details High density two dimensional bar code symbology High density two dimensional bar code symbology

1994-10-26

1996-04-02

Hajec, Donald T.

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235462, G06K 1906

Patent

active

055043224

ABSTRACT:
A nonvolatile electro-optical read-only memory includes a substrate on which is printed (or otherwise inscribed) a complex symbol or "label" with a high density two-dimensional symbology, a variable number of component symbols or "codewords" per row, and a variable number of rows. Codewords in alternating rows are selected from mutually exclusive subsets of a mark pattern such as a (17,4) mark pattern. The subsets are defined in terms of particular values or a discriminator function, which is illustrated as being a function of the widths of bars and spaces in a given codeword. In the illustrated embodiment, each subset includes 929 available codewords; that, plus a two-step method of decoding scanned data, permitting significant flexibility in defining mappings of human-readable symbol sets into codewords. The memory may be used in conjunction with a scanner and a suitable control system in a number of applications, e.g., robotic operations or automated microfilm searching.

REFERENCES:
patent: 3360659 (1967-12-01), Young
patent: 3685723 (1972-08-01), Berler
patent: 3699321 (1972-10-01), Gibson
patent: 4000397 (1976-12-01), Hebert et al.
patent: 4109316 (1978-08-01), Snyder
patent: 4113343 (1978-09-01), Pole et al.
patent: 4114033 (1978-09-01), Okamoto
patent: 4115703 (1978-09-01), Dobras
patent: 4118675 (1978-10-01), Rahn et al.
patent: 4158435 (1979-06-01), Nakanishi et al.
patent: 4160156 (1979-07-01), Sherer
patent: 4182956 (1980-01-01), Funk, Jr. et al.
patent: 4210802 (1980-07-01), Sakai
patent: 4259569 (1981-03-01), Passer
patent: 4277127 (1981-07-01), Smith et al.
patent: 4305646 (1981-12-01), Bechtold
patent: 4356389 (1982-10-01), Quirey et al.
patent: 4455485 (1984-06-01), Hosaka et al.
patent: 4528444 (1985-07-01), Hara et al.
patent: 4560862 (1985-12-01), Eastman et al.
patent: 4570057 (1986-02-01), Chadima, Jr. et al.
patent: 4578568 (1986-03-01), Tsuzuki
patent: 4578571 (1986-03-01), Williams
patent: 4740675 (1988-04-01), Brosnan et al.
patent: 4749879 (1988-06-01), Peterson et al.
patent: 4760248 (1988-07-01), Swartz et al.
patent: 4794239 (1988-12-01), Allais
patent: 4795224 (1989-01-01), Goto
patent: 4801788 (1989-01-01), Osaka
patent: 4870367 (1989-09-01), Nakase et al.
patent: 4883949 (1989-11-01), Kokubo
patent: 5047619 (1991-09-01), Zurbrick

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