Concentric Circular 2D Code for Rugged Surface Readability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing two-dimensional codes, such as QR codes, are limited by low code density, require a flat surface for reading, and are prone to deformation, making them unsuitable for rugged surfaces and increasing the risk of unreadability.
Innovation Solution
A two-dimensional code comprising a plurality of positions arranged along concentric circles with a common center, featuring a reference pattern portion and rotational reference, allowing for increased code density and readability on both smooth and rough surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a QR code is used to achieve high code density, then code density is improved, but the code becomes unreadable on rugged surfaces and requires flat surfaces
Solution Approach 1:
The patent applies curvature by arranging code elements along concentric circular patterns instead of linear or grid structures. This circular arrangement allows the code to conform to curved and rugged surfaces, maintaining readability while preserving high code density. The concentric circles can adapt to surface variations without losing structural integrity.
Solution Approach 2:
The patent changes the geometric parameters of the code structure from conventional linear/grid arrangements to circular/concentric patterns. This parameter change enables the code to maintain its decoding properties while adapting to rugged surfaces, resolving the contradiction between high density and surface adaptability.
2Quantity of substance
If a QR code is placed close to fill the field of view, then code density is improved, but only one code per image can be used
Solution Approach 1:
The patent transitions from linear scanning patterns to two-dimensional concentric circular patterns, enabling multiple independent code regions to coexist within a single image frame. This dimensional reorganization allows simultaneous placement of multiple codes without interfering with each other's readability.
3Ease of operation
If a bar code is used for easy laser scanning, then ease of operation is improved, but code density becomes low
Solution Approach 1:
By using concentric circular patterns instead of linear bar code structures, the invention maintains optical scanability while dramatically increasing information density. The circular geometry allows for more efficient packing of code elements within the same area.
4Ease of manufacture
If a conventional code is printed on a wrinkled or deformed label, then manufacturing flexibility is improved, but the code becomes unreadable
Solution Approach 1:
The concentric circular pattern inherently accommodates surface deformations, wrinkles, and curvatures better than linear patterns. The radial symmetry and circular geometry distribute deformation effects uniformly, maintaining code integrity and readability even on non-planar surfaces.
Data Source
AI summary
The present disclosure relates to a two-dimensional code (100) comprising: a plurality of positions (110) arranged along a plurality of concentric circles (120), the plurality of concentric circles having a common center (130) and being arranged substantially on a two-dimensional plane, each of said positions (110) indicating presence of a symbol or absence of a symbol, each presence or absence of a symbol at each position being optically readable and representing a data value set to each of the plurality of positions (110); and a first reference pattern portion (140) including a set of the plurality of positions indicating at least the common center (130), wherein the first reference pattern portion (140) comprises all positions along the inner most circle of the plurality of concentric circles (120), wherein all positions along the inner most circle indicate presence of a symbol.