Manual scanning apparatus for reading an optical code representi

Details Manual scanning apparatus for reading an optical code representi Manual scanning apparatus for reading an optical code representi

1996-09-30

1999-03-23

Gross, Anita Pellman

Registers

Coded record sensors

Readout control

235472, 235454, 235460, G06K 0710

Patent

active

058863354

ABSTRACT:
A code read apparatus optically reads, by manual scanning, a two-dimensional code recorded on a recording medium. The code comprises a plurality of blocks having dot patterns arranged in accordance with multimedia information. An area sensor of an imaging section of the code read apparatus outputs an image signal in accordance with a clock signal generated by a clock generator. The area sensor is constructed and the clock signal is determined such that a maximum scan speed V of 160 mm/s to 200 mm/s, at which the code can be read at the time of manual scanning, is achieved, the maximum scan speed being given by ##EQU1## where m=the number of blocks in one imaging screen in the scan direction, lm=the length of one block in the scan direction, and t=the imaging cycle.

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Patent Abstracts of Japan, vol. 017, No. 471 (P-1601), Aug. 26, 1993 & JP-A-05 109068 (Wacom Co., Ltd.).
Patent Abstracts of Japan, vol. 015, No. 342 (P-1244), Aug. 29, 1991 & JP-A-03 137341 (Hitachi Ltd.).

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