Device-Specific Barcode Generation for Mobile Display

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Solution Overview

Problem

Bar codes generated from identical data appear differently on various mobile devices due to device-specific display resolutions and properties, leading to capture issues by reading devices, especially when users switch devices.

Innovation Solution

A method and system that ascertain the device type and properties of a mobile device to generate visually encoded image data, such as bar codes, in a device-specific format, ensuring optimal display and capture capabilities without requiring user intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If bar codes are generated with high resolution for large displays, then display quality is improved, but capture reliability by reading devices deteriorates

Engineering Contradiction:
Improvedisplay qualityVSAvoidcapture reliability
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The patent changes the display parameters (resolution, size, dimensions) of the bar code based on the detected properties of the reading device. The system generates multiple versions of the bar code with different resolutions and selects the appropriate version that ensures reliable capture by the specific reading device, thus resolving the contradiction between high display quality and capture reliability.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If bar codes are optimized for specific device properties, then display accuracy is improved, but device compatibility deteriorates

Engineering Contradiction:
Improvedisplay accuracyVSAvoiddevice compatibility
Core Design Contradiction:
Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic adaptation mechanism where the bar code display parameters are adjusted in real-time based on the detected properties of the reading device. The system detects device properties (resolution, size, type) and dynamically generates or selects the appropriate bar code version, making the system adaptable to various devices while maintaining optimal display accuracy for each specific device.

Inventive Principle:
Principle #15Dynamics

3Productivity

If device-specific image data representation information is stored, then image data generation speed is improved, but memory requirements increase

Engineering Contradiction:
Improveimage data generation speedVSAvoidmemory requirements
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent stores device-specific image data representation information in a structured manner, organizing memory resources according to device types and properties. Instead of storing all possible variations, the system stores only the necessary representation information for detected device categories, optimizing memory usage while maintaining fast generation speed for common device types.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS9934552B2Method and system for supplying visually encoded image data
Publication Date: 2018.04.03 GIESECKE & DEVRIENT EPAYMENTS GMBH
  • US9934552B2 patent drawing
  • US9934552B2 patent drawing
  • US9934552B2 patent drawing

AI summary

A method for supplying visually encoded image data for displaying through a mobile end device includes supplying a datum. A device type of the end device is ascertained on the basis of a user identity which is assigned to a security element integrated into the end device. On the basis of the device type of the end device, the device properties of the end device are ascertained which influence a displaying of visually encoded image data on the end device. On the basis of the ascertained device properties, an image data representation information item is generated for generating visually encoded image data for the end device in device-specific fashion. Finally, the visually encoded image data are generated based on the image data representation information item in device-specific fashion for representing the datum on the end device.