Touchscreen EQS-HBC Interface for Human Body Data Transfer
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Solution Overview
Problem
Existing touchscreen technologies fail to establish high-speed, low Signal to Noise Ratio (SNR) data communication between wearable devices and larger systems, such as kiosks in POS systems, due to limitations in data transfer speed, channel capacity, and susceptibility to communication losses.
Innovation Solution
A system utilizing Electro-Quasistatic Human Body Communication (EQS-HBC) that includes a capacitive touch sensing layer with electrodes at the edges to maximize field strength, a data communication module for transmitting and receiving data through the human body network, and a ground plane for reference, enabling high-speed data transfer of audio, images, and personalized data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional data communication technologies are used, then device compatibility is maintained, but data transfer speed is limited to less than 1 kbps
Solution Approach 1:
The patent uses the human body as an intermediary medium for data transmission. The touchscreen interface detects touch inputs and converts them into electrical signals that travel through the user's body to external devices, achieving high-speed communication without traditional wireless or wired connections.
Solution Approach 2:
The patent replaces traditional mechanical data transfer methods (wired connections, wireless radio frequency communication) with an electro-physiological system that uses the human body's electrical properties for signal transmission, enabling faster and more reliable data transfer.
2Ease of operation
If wireless technologies are used for data transfer, then communication flexibility is improved, but data transfer rate remains low and data efficiency is reduced due to high communication losses
Solution Approach 1:
The human body serves as a direct electrical conduit, eliminating the need for wireless signal transmission through air. This intermediary approach maintains the flexibility of wireless communication while achieving wired-like or superior data transfer rates with minimal signal loss.
3Measurement precision
If touchscreen technology is configured only for touch detection, then touch sensing accuracy is maintained, but data communication capability between devices is not established
Solution Approach 1:
The touchscreen interface is designed to perform multiple functions: it detects touch inputs for user interaction and simultaneously establishes electrical contact with the user's body to enable high-speed data communication. This multi-functionality allows the same hardware to serve both sensing and communication purposes.
Solution Approach 2:
The patent merges the touch sensing function with the data communication function into a single integrated system. The touchscreen electrodes that detect finger touches also serve as signal transmission points, combining two separate functions into one unified interface.
4Productivity
If electrodes are positioned to maximize field strength for data transmission, then communication efficiency is improved, but touch sensing coverage may be reduced
Solution Approach 1:
The patent implements different electrode configurations in different regions of the touchscreen. Edge regions have electrodes optimized for maximum field strength and data transmission, while central regions maintain full touch sensing coverage. This local differentiation allows each area to optimize for its primary function.
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
Enables high-speed, low-loss data communication with improved SNR and channel capacity, allowing simultaneous touch detection and data transfer, including user-specific data like personal information and content data, while reducing the risk of unauthorized interception.
Implementation Method 1
a capacitive touch sensing layer configured to detect touch input within surface area of the touchscreen interface
Implementation Method 2
The at least one electrode is configured to maximize a field strength captured during data transmission
Implementation Method 3
an Electro-Quasistatic Human Body Communication (EQS-HBC) transmitter configured to establish a communication channel with one or more external devices using human body network
Data Source
AI summary
A system and method for touch-based data communication using human body is disclosed. The present system provides touch-based data communication using a human body. The human body is used as a conducting medium for establishing a communication channel between plurality of communicating devices. The system includes an Electro-Quasistatic Human Body Communication (EQS-HBC) transmitter configured to send data signals to the one or more external devices through a human body based on the detected touch input. An EQS-HBC receiver is configured to receive data signals from the one or more external devices 104 through the human body based on the detected touch input. Further, the system includes a ground plane integrated within the touchscreen interface for acting as a ground electrode.