Touch Input Device with Variable Sensor Density
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Solution Overview
Problem
Conventional touch input devices determine touch paths based on the sequence of touch signals, leading to mundane operation and limited functionality in electronic devices such as mobile phones and remote controls.
Innovation Solution
A touch input device with a multipoint touch panel featuring touch sensor groups arranged along a predetermined path, where the number of sensors changes gradually, allowing for the determination of touch paths that correspond to specific functions, enabling the control of parameters like brightness or volume through a processing unit and stored relationship table.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional touch input devices determine touch paths according to the sequence of touch signals, then the device can operate with simple structure, but the operation becomes mundane and functionality is limited
Solution Approach 1:
The touch panel is divided into multiple touch sensor groups arranged along a predetermined path, with each group containing a specific number of touch sensors. This segmentation enables the system to detect not just the sequence but also the pattern and density of touches along the path, thereby enhancing functionality while maintaining a structured layout.
Solution Approach 2:
The patent transitions from one-dimensional sequence detection to two-dimensional pattern detection by arranging touch sensor groups along a predetermined path and varying the number of sensors in each group. This allows the system to recognize different touch patterns (e.g., sweeping motions, tapping sequences) in addition to sequential order, enriching the operational capabilities without significantly increasing structural complexity.
2Adaptability or versatility
If touch sensor groups are arranged with varying numbers along a predetermined path, then diverse touch paths can be recognized, but the manufacturing complexity increases
Solution Approach 1:
Different regions of the touch panel (represented by touch sensor groups along the predetermined path) are designed with different numbers of touch sensors, creating local variations in sensing density. This allows the system to recognize diverse touch paths and patterns by analyzing which regions are activated, enhancing touch path recognition while maintaining a systematic manufacturing approach through modular group design.
Data Source
AI summary
A touch input device is provided. The touch input device includes a touch panel and a touch control. The touch panel includes a number of touch sensor groups, each touch sensor group includes a line of touch sensors, each touch sensor produces a touch signal in response to a user's touch, the touch sensor groups are arranged on the touch panel one by one along a predetermined path, the quantity of touch sensors of each touch sensor group is increased or decreased gradually, and the arrangement direction of the touch sensors of each touch sensor group is perpendicular to the direction of the predetermined path. The touch control is connected to the touch panel and is used to receive the touch signals produced by the touch sensor, and determine a touch path according to the changes of the quantity of the received touch signals.