Touch Array Segmentation With Sub-Hosts For Active Pen Recognition
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Solution Overview
Problem
Electronic devices face challenges in efficiently supporting both finger and active pen touches while maintaining reliable touch recognition and display functionality, particularly with larger and faster displays, leading to degradation in sensing performance.
Innovation Solution
A touch system with a touch array, touch driver, sub-hosts, and main host that utilize capacitive coupling and radio communication to transmit and receive position information, enabling reliable touch recognition through a network of touch electrodes and communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If larger and faster displays are used to improve display performance, then display speed and size are improved, but sensing performance for touch recognition degrades
Solution Approach 1:
The host is divided into a main host and multiple sub-hosts. Each sub-host is responsible for receiving position information from specific objects through dedicated communication channels. This segmentation allows parallel processing of touch data from multiple objects simultaneously, improving both sensing performance and system speed without degrading measurement precision.
Solution Approach 2:
Sub-hosts act as intermediaries between the touch array and the main host. They receive position information from objects via communication channels (such as Bluetooth), process the data locally, and then transmit it to the main host. This intermediary structure enables reliable touch recognition by distributing the processing load and maintaining accurate position data throughout the system.
2Adaptability or versatility
If multiple objects are supported simultaneously to improve versatility, then adaptability is improved, but system complexity increases
Solution Approach 1:
The host system is segmented into a main host and multiple sub-hosts, where each sub-host manages communication with specific objects. This segmentation allows the system to support multiple objects simultaneously by distributing the communication burden across multiple sub-hosts, each handling a subset of objects through dedicated communication channels.
Solution Approach 2:
Each sub-host is designed with universal functionality to communicate with multiple different objects through standardized communication channels (such as Bluetooth). This multi-functionality allows the same sub-host structure to handle various object types without increasing overall system complexity, as each sub-host can adapt to work with different objects using the same communication protocol.
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
Enhances the reliability of touch recognition by accurately detecting both finger and active pen inputs, improving the overall performance and functionality of electronic devices.
Implementation Method 1
utilize capacitive coupling and radio communication to transmit and receive position information
Implementation Method 2
utilize capacitive coupling and radio communication to transmit and receive position information
Data Source
AI summary
A touch system may include a touch array including touch electrodes, a touch driver configured to apply touch driving signals including different codes to the touch electrodes to thereby transmit uplink signals to objects adjacent to the touch array, at least one sub-host connected to at least one object among the objects through a communication channel, and configured to receive, from the at least one object, position information corresponding to the at least one object through the communication channel, and a main host configured to receive the position information corresponding to the at least one object through the at least one sub-host.