Portable Terminal and HMD Display Sharing for Privacy and Usability
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Solution Overview
Problem
Existing technologies face limitations in expanding the use of head-mounted displays (HMDs) due to screen size, processing ability, resolution, and weight, while portable terminals offer advanced processing and large displays but pose privacy concerns with screen visibility. The cooperation between HMDs and portable terminals lacks optimal usability and privacy protection in information sharing.
Innovation Solution
A cooperative display system that connects a portable terminal and a head-mounted display, allowing information to be shared and displayed on both devices, with the portable terminal transmitting at least a part of the information to the HMD for enhanced usability and privacy protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If information is displayed on the portable terminal's large screen, then visibility and ease of operation are improved, but privacy is compromised due to screen visibility to others
Solution Approach 1:
The display function is segmented between two devices: the portable terminal handles operation input and overall control, while the HMD handles private information display. This segmentation allows each device to specialize in its strengths while mitigating the portable terminal's privacy weakness.
Solution Approach 2:
The HMD acts as an intermediary display device between the user and the portable terminal. It receives information from the portable terminal and displays it in a private manner, serving as a mediator that protects user privacy while maintaining information accessibility.
2Object-affected harmful factors
If the HMD is used for display, then privacy is improved, but the screen size and resolution are limited
Solution Approach 1:
The display system is segmented into two parts: the HMD for private, close-view information and the portable terminal for detailed, large-screen content. This segmentation allows the HMD to provide privacy protection while the portable terminal compensates for its smaller screen area.
Solution Approach 2:
The system transitions from a single-dimension display (either HMD or portable terminal alone) to a two-dimension cooperative display system. Different types of information are displayed on different devices based on their characteristics, creating a multi-dimensional information presentation approach.
3Ease of operation
If the portable terminal is used for operation, then ease of operation is improved, but privacy protection is insufficient due to visible screen
Solution Approach 1:
The functional responsibilities are segmented: the portable terminal handles operation input (buttons, touchscreen) while the HMD handles information display. This segmentation separates the ease of operation function from the privacy protection function, allowing each to be optimized independently.
Solution Approach 2:
The HMD serves as an intermediary that receives operational commands from the portable terminal and executes them while displaying results privately. It mediates between the user's operational needs and privacy protection requirements.
4Ease of operation
If cooperative display between HMD and portable terminal is implemented, then usability is improved, but device complexity increases
Solution Approach 1:
The system implements a universal communication interface that allows the HMD and portable terminal to cooperate through standardized protocols. This multi-functionality enables various information sharing modes (full screen, partial screen, selective display) without requiring complex custom integration for each scenario.
Solution Approach 2:
A standardized external equipment interface acts as an intermediary layer between the HMD and portable terminal, simplifying the connection and communication protocols. This intermediary abstraction reduces the complexity of direct device integration.
Data Source
AI summary
In a cooperative display system that connects a portable terminal and a head mounted display to display information in cooperation, the portable terminal displays information on a first display, and transmits at least a part of the information that is displayed to the head mounted display, and the head mounted display shares and displays the information transmitted from the portable terminal on a second display. Here, the information displayed on the portable terminal is hierarchical information, and the information displayed on the head mounted display is lower-level information in the hierarchical information. In addition, whether a user is stationary or moving is detected by a sensor of the portable terminal, and in a case where the user is stationary, the display of the information on the portable terminal is stopped, and the information is displayed only on the head mounted display.