Tactile Lattice Cell Scheduling for Low-Complexity Output
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Solution Overview
Problem
Existing information output devices, particularly those using tactile sense for users with weakened visual abilities, face challenges in ease of manufacture, control complexity, and user convenience due to embedded circuits, limiting the improvement of information output through tactile sense.
Innovation Solution
An information output device with a lattice structure of tactilely sensed cells, a selection part for choosing cells to be driven, a scheduling plan generator for driving order, and a signal generator to transmit driving signals to the cells, optimizing operation time and preventing malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If display devices with multiple pixels are used for visual information output, then information output capability is improved, but device complexity increases due to embedded circuits
Solution Approach 1:
The information output device is divided into multiple independent cells arranged in a matrix, where each cell contains a limited number of information output units (e.g., 2-4 units). This segmentation reduces the complexity of control circuits compared to traditional display devices with numerous pixels, while still enabling comprehensive information output through coordinated cell activation.
2Ease of operation
If tactile sense information output is implemented, then user convenience for visually impaired users is improved, but control and driving difficulty increases
Solution Approach 1:
Each cell in the matrix is designed with specific local characteristics, containing a predetermined number of information output units (2-4 units) that can be independently controlled. This local quality approach simplifies the overall control system by breaking down complex tactile patterns into manageable cell-level operations, reducing driving difficulty while maintaining user convenience.
3Measurement precision
If multiple cells are driven simultaneously for information output, then information accuracy is improved, but interference between cells occurs
Solution Approach 1:
The control circuit is designed to select and activate cells in a predetermined sequence rather than simultaneously driving all cells. This preliminary action approach ensures that when one cell is active, adjacent cells are in a reset or standby state, preventing interference while maintaining accurate information output through sequential cell activation.
4Measurement precision
If operating time is extended for complete information display, then information accuracy is improved, but power consumption increases
Solution Approach 1:
The information output device uses periodic action by sequentially activating cells in groups rather than maintaining continuous operation of all cells. The control circuit divides cells into multiple groups and activates them in alternating time slots, reducing overall power consumption while ensuring complete information display through repeated cycles of cell activation.
Data Source
AI summary
An information output device may include an information output part in which cells including a predetermined number of information output units formed to be tactilely sensed when upward movement or downward movement occurs in at least one direction are arranged in a lattice structure, a selection part selecting a plurality of cells to be driven according to information to be output to the information output part, a first generation part for generating a scheduling plan specifying a driving order for the plurality of cells selected by the selection part, and a second generation part generating a driving signal according to the scheduling plan and transmitting the driving signal to the cells.