Marker Signal Pattern Segmentation for Resolution Adaptability

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Solution Overview

Problem

Conventional marker reading devices face challenges in efficiently decoding data from markers with varying shading patterns, especially when captured at different resolutions, leading to inaccuracies in data retrieval and information extraction.

Innovation Solution

A marker generating method that divides a bit string into partial signals with extended pattern cycles, generating a second signal pattern arrangement with varying levels, and sets gradations of shading based on these patterns, allowing for stepwise decoding of data from markers captured at different resolutions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional marker reading devices decode data from markers with varying shading patterns, then data retrieval is performed, but inaccuracies occur when markers are captured at different resolutions

Engineering Contradiction:

Improvedata decoding accuracyVSAvoidresolution adaptability

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The marker is divided into multiple signal patterns with different pattern cycles (first signal pattern with cycle T1, second signal pattern with cycle T2). Each signal pattern segment corresponds to different data bits, allowing the reading device to decode data at different resolution levels by analyzing only the appropriate segment, thereby resolving the contradiction between decoding accuracy and resolution adaptability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the marker (different signal patterns) are assigned different pattern cycles and shading variations. The first signal pattern uses a longer pattern cycle suitable for lower resolution captures, while the second signal pattern uses a shorter pattern cycle for higher resolution captures. This local differentiation allows the marker to be accurately read regardless of the capture resolution

Inventive Principle:

Principle #3Local quality

2Device complexity

If a single pattern cycle is used in the marker, then the marker structure is simple, but the ability to decode data accurately at varying resolutions is reduced

Engineering Contradiction:

Improvemarker structure complexityVSAvoiddata decoding precision

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The marker structure is segmented into multiple signal patterns, each with distinct pattern cycles. This segmentation increases structural complexity but enables the marker to provide accurate decoding at multiple resolution levels, as each segment can be independently analyzed according to the capture resolution

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an additional dimension of pattern cycle variation within the marker structure. By incorporating signal patterns with different pattern cycles (T1 and T2) rather than using a single uniform cycle, the marker gains the capability to be accurately decoded across different resolution dimensions without excessive complexity

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Measurement precision

If the marker uses extended pattern cycles for all signal patterns, then low-resolution decoding is improved, but high-resolution data extraction efficiency decreases

Engineering Contradiction:

Improvelow-resolution decoding accuracyVSAvoidhigh-resolution decoding efficiency

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

The marker is segmented into signal patterns with different pattern cycles matched to different resolution requirements. The first signal pattern uses an extended pattern cycle optimized for low-resolution decoding, while the second signal pattern uses a shorter pattern cycle optimized for high-resolution decoding. This segmentation allows each segment to be decoded efficiently at its appropriate resolution level

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the pattern cycle parameter across different signal patterns within the same marker. By varying the pattern cycle length (T1 for first signal pattern, T2 for second signal pattern), the marker optimizes decoding performance for different resolution scenarios, improving both low-resolution accuracy and high-resolution efficiency

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10142643B2Marker generating method, marker decoding method, and marker reading device

Publication Date: 2018.11.27 KK TOSHIBA

AI summary

According to one embodiment, a marker generating method is provided. In the marker generating method, a value in a bit string is replaced with a signal pattern to generate a first signal pattern arrangement. The first signal pattern arrangement is divided into a first partial signal and a second partial signal. The first partial signal having a pattern cycle extended to a pattern cycle of the second partial signal is added to the second partial signal to generate a second signal pattern arrangement. A gradation of shading which indicates a signal of the second signal pattern arrangement is set.