Method of recording/reproducing data of mesh pattern, and appara

Details Method of recording/reproducing data of mesh pattern, and appara Method of recording/reproducing data of mesh pattern, and appara

1989-08-03

1991-08-20

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 9, 382 22, 382 48, G06K 900

Patent

active

050420798

ABSTRACT:
A data reading apparatus reads data of dots from a recording sheet on which data is recorded in the form of a mesh pattern, and decodes the read data into binary data. The data reading apparatus has an image sensor to read black/white levels of dots of the mesh pattern using the image sensor and to binarize the read levels by a hardware component or CPU processing according to software. An image can have a high recording density by minimizing a dot size.

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patent: 4422361 (1983-12-01), Ishii et al.
patent: 4437378 (1984-03-01), Ishida et al.
patent: 4464966 (1984-08-01), Ishida
patent: 4589144 (1986-05-01), Namba
patent: 4783838 (1988-11-01), Matsunawa
patent: 4788598 (1988-11-01), Ochi et al.
patent: 4797940 (1989-01-01), Sato et al.

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