Display Device Non-Visual Status Detection and Audio Output
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Solution Overview
Problem
Conventional digital TV systems cannot provide program information and subtitle information to users who are unable to visually watch the display device, limiting interactive services like IPTV.
Innovation Solution
A display device and method that determine a user's watching status using face recognition, eye tracking, or mobile terminal sensors to provide information audibly or through a mobile terminal if the user is not visually watching, including program details and event notifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the system provides visual display information, then information delivery is effective for visual users, but users with visual impairments or non-visual watching status cannot access program information and subtitles
Solution Approach 1:
The information delivery system is segmented into multiple output channels: visual display for visual users and audio output for non-visual users. The control unit segments the information stream based on detected user watching status, directing program information and subtitles to appropriate output modalities to ensure all users receive accessible information.
Solution Approach 2:
The system changes the output parameter modality from visual-only to multi-modal (visual and audio). By detecting user watching status, the system dynamically switches between visual display and audio output parameters, enabling program information and subtitles to be delivered through the most appropriate channel for each user's current state.
2Measurement precision
If the system uses face recognition and eye tracking to detect user status, then accurate watching status detection is achieved, but device complexity increases
Solution Approach 1:
The control unit is designed with multi-functionality, integrating face recognition, eye tracking, and mobile terminal communication capabilities into a single component. This universal approach allows the control unit to perform multiple detection and control functions without requiring separate dedicated devices, thereby reducing overall system complexity while maintaining detection precision.
Solution Approach 2:
The system uses an intermediary approach by leveraging mobile terminal sensors as an extended detection mechanism. The mobile terminal acts as an intermediary device that complements the display device's detection capabilities, allowing accurate watching status detection to be achieved through coordinated sensing without significantly increasing the core display device's complexity.
Data Source
AI summary
A method for operating a display device according to an embodiment of the present invention comprises the steps of playing back a broadcast program; obtaining a user's watching status while the broadcast program is played back; and providing information of the display device if the obtained user's watching status is obtained as a non-visual watching status in which the user does not watch a display unit of the display device.