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Title:
INFORMATION CODE, CODE GENERATION METHOD, AND CODE READING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228654
Kind Code:
A1
Abstract:
An information code (CQ2) is a combination of a secret code (Cd2) and a public code (Cd1) in which information is recorded by means of a two-dimensional array of a plurality of cells (Ce). The information code (CQ2) contains white cells (Cww) and black cells (Cbw) and also white dot cells (Cwc) and black dot cells (Cbc). In each white dot cell (Cwc), a white dot area enclosed by a black outer area is formed. In each black dot cell (Cbc), a black dot area enclosed by a white outer area is formed.

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Inventors:
KIKUCHI SHINICHI (JP)
OKUMURA MITSUO (JP)
OKABE TATSUYA (JP)
Application Number:
PCT/JP2023/015950
Publication Date:
November 30, 2023
Filing Date:
April 21, 2023
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
G06K19/06; G06K7/14
Domestic Patent References:
WO2021251317A12021-12-16
Foreign References:
JP2016201061A2016-12-01
Attorney, Agent or Firm:
YAHAGI Kazuyuki et al. (JP)
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