Touch Screen Cursor Projection for External Display Interaction
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Solution Overview
Problem
Conventional electronic devices with touch screens require users to alternate their gaze between the device and an external display to confirm that content is correctly projected, as they lack a cursor corresponding to finger movements, making the projection process inconvenient.
Innovation Solution
An electronic device with a touch screen, a transceiving unit, and a control unit that enables a touch pad projection mode, allowing the device to transmit its screen and cursor to an external display, enabling users to project content and interact without constantly switching their gaze.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless projection is used to display content on external display device, then content sharing capability is improved, but user operation convenience deteriorates due to lack of cursor feedback
Solution Approach 1:
The patent creates a visual copy of the touch interaction by projecting a cursor on the external display that mirrors finger movements on the touch screen. This cursor acts as a visual representation of the invisible touch input, allowing users to see where their touches are registering on the projected content without needing to look at the mobile device screen.
Solution Approach 2:
The system implements real-time feedback by continuously updating the cursor position on the external display to correspond with finger movements on the touch screen. This feedback loop allows users to immediately see the effect of their touch actions on the projected content, enabling accurate selection and interaction without visual verification on the small screen.
2Device complexity
If touch actions are performed without cursor projection, then device simplicity is maintained, but information visibility deteriorates as finger movements are not displayed on projected screen
Solution Approach 1:
The patent creates a visual copy of the touch interaction by projecting a cursor on the external display that mirrors finger movements on the touch screen. This cursor acts as a visual representation of the invisible touch input, allowing users to see where their touches are registering on the projected content without needing to look at the mobile device screen.
3Ease of operation
If users focus on external display during projection, then viewing comfort is improved, but operation accuracy deteriorates without visual feedback on touch positions
Solution Approach 1:
The system implements real-time feedback by continuously updating the cursor position on the external display to correspond with finger movements on the touch screen. This feedback loop allows users to immediately see the effect of their touch actions on the projected content, enabling accurate selection and interaction without visual verification on the small screen.
Data Source
AI summary
An electronic device and a screen content sharing method thereof are provided, adapted for sharing screen content between the electronic device and an external display device. The method includes the following steps. A current screen is displayed. A work mode of the electronic device according to connection status between the electronic device and the external display device is determined. A touch position and a touch mode of a touch action on the touch screen are determined according to the touch action received by the touch screen. A connection management program is executed, and the electronic device is controlled to enter a touch pad projection mode. When the connection management program is executed, the current screen is transmitted to the external display device so as to display the current screen, and a cursor is projected on the current screen displayed by the external display device according to the touch position.