Touch Panel Display Input Mode Detection and Switching
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Solution Overview
Problem
Existing display apparatuses require users to explicitly switch between handwriting input and controlling external devices, increasing operational steps and user complexity.
Innovation Solution
A display apparatus that automatically determines whether input is for handwriting or controlling an external device based on the type of input means used, such as a finger or stylus pen, by analyzing contact area, contact signal, pressing force, and number of contact coordinates, and adjusts accordingly to transmit coordinates or display stroke data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display apparatus requires explicit mode switching between handwriting input and external device control, then the function differentiation is clear, but the operational complexity increases and user convenience deteriorates
Solution Approach 1:
The display apparatus automatically detects the type of input means (finger or stylus pen) and autonomously determines whether to activate handwriting input mode or external device control mode without requiring user intervention for mode switching. The system serves itself by using detection results to automatically select the appropriate operation mode
Solution Approach 2:
The system changes the operational parameter (input mode) based on the detected input means type. When a stylus pen is detected, the system switches to handwriting input mode; when a finger is detected, it switches to external device control mode, thereby adapting the system behavior to the detected input device
2Ease of operation
If the display apparatus automatically detects input means type, then the ease of operation improves, but the detection complexity increases
Solution Approach 1:
The patent replaces complex mechanical or manual mode switching mechanisms with an automated detection system that identifies the input means type through electrical or electromagnetic signals. The touch panel detects whether the input means is a conductive stylus pen or a non-conductive finger through signal characteristics
Solution Approach 2:
The touch panel serves as an intermediary that mediates between the user's input action and the system's mode selection. It detects the input means type and translates this information into a signal that triggers the appropriate operation mode without requiring direct user intervention
Data Source
AI summary
A display apparatus includes circuitry to display, on a touch panel display, an image received from an external device that is external to the display apparatus; detect coordinates of a position of an input means that has approached the position within a threshold distance from the touch panel display; transmit the coordinates of the input means that has approached the position to the external device based on a first determination result indicating that a predetermined condition is satisfied. Based on a second determination result indicating that the predetermined condition is not satisfied, the circuitry displays stroke data based on the coordinates of the input means that has approached the position so as to be superimposed on the image on the touch panel display.