Capacitive Touch Screen Object Code Pattern Recognition
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Solution Overview
Problem
Current methods for detecting object information through optical code patterns are laborious and require direct adjacency to the reading device, involving separate steps for photographing and processing, which slows down the detection process.
Innovation Solution
A capacitive touch screen device receives an object code pattern with at least two conductive parts, interacting with the screen to change the electric field and produce a virtual code, allowing for direct and efficient identification of objects without the need for photographing or processing images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If optical code pattern detection is used, then object information can be detected, but the detection process becomes laborious and slow due to separate photographing and processing steps
Solution Approach 1:
The patent merges the photographing step and the code reading step into a single capacitive touch interaction. The conductive parts of the object code pattern directly interact with the capacitive touch screen, eliminating the need for separate photographing and image processing operations, thus improving detection speed and reducing operational complexity
Solution Approach 2:
The patent replaces the optical-mechanical system (camera photographing optical codes) with an electrical-capacitive system (capacitive touch screen detecting conductive patterns). This substitution eliminates the need for image capture and processing hardware, simplifying the operational process and accelerating detection
2Ease of operation
If optical code pattern reading is used, then object identification is achieved, but the code pattern must be directly adjacent to the reading device which limits usability
Solution Approach 1:
The capacitive touch screen acts as an intermediary that can detect conductive patterns through dielectric materials. This allows the object code pattern to be touched indirectly through substances with sufficiently high electric permittivity, providing operational flexibility while maintaining detection capability without requiring direct adjacency
3Measurement precision
If picture data processing is required, then optical code recognition is achieved, but this adds laborious steps and time to the detection process
Solution Approach 1:
The patent replaces the optical image processing pipeline with direct capacitive signal detection. The conductive parts of the code pattern generate electrical signals that are directly read by the capacitive touch screen, eliminating time-consuming image capture, transmission, and processing steps while maintaining recognition accuracy through electrical field interaction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method simplifies the detection process by enabling direct interaction between the object code pattern and the capacitive touch screen, allowing for fast and easy identification of objects and providing additional data for applications, while being difficult to reproduce and compatible with various touch screen resolutions.
Implementation Method 1
The object code pattern is adapted to interact, via electric field changes within an area of the capacitive touch screen, with the apparatus that performs the method
Implementation Method 2
Upon receiving the object code pattern by the capacitive touch screen, an electric field changes within an area of the capacitive touch screen that interacts with said at least two conductive parts
Implementation Method 3
An electronic circuit connected to the connection point and adapted to supply a time-variant pulsed signal to the object code pattern causing that the change of the electric field, in addition to being dependent on the conductive pattern formed by the at least two conductive parts in the object code pattern, is time-variant
Implementation Method 4
The object code pattern comprises at least two conductive parts, wherein each of the at least two conductive parts is electrically connected to each other of the at least two conductive parts and to a connection point, and wherein the at least two conductive parts form a conductive pattern that is individual for the object
Data Source
Figure 1a~1b
Figure 2a~2c
Figure 3
AI summary
A method comprises receiving by a capacitive touch screen (2) an object code pattern (7) being associated with an object (5), said object code pattern (7) comprising at least one conductive part (11a-11d), so that, upon receiving, electric field changes within an area of the capacitive touch screen (2) that interacts with said at least one conductive part. The method further comprises detecting the changes in the electric field to produce a virtual object code comprising an identifier code relating to the object, recognizing the object (5) by comparing the identifier code to a list of identifier codes, providing application data based on the object (5), and performing using the capacitive touch screen (2) at least one application based on the application data. In addition, a system, an apparatus and a computer program related to the method are presented.