Proximity-Sensing Display Device With Mobile Screen-State Switching
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Solution Overview
Problem
Conventional display devices struggle with unreliable user proximity detection, leading to reduced functionality and inefficient power usage, and lack the ability to interwork seamlessly with external devices based on their screen states.
Innovation Solution
A display device equipped with sensors, a communication interface, and a processor that detects user proximity, performs automatic connection with a mobile terminal, and adjusts its display content based on the mobile terminal's screen state, enabling an always-on display (AOD) function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sensors are used to detect user proximity, then the device can detect movement, but the detection reliability is reduced due to false recognition of pets or other users
Solution Approach 1:
The system dynamically adjusts the detection strategy based on the operational context. When the mobile terminal is in a communication state, the display device prioritizes receiving communication information. When in a non-communication state, it switches to displaying screen content. This dynamic adaptation resolves the contradiction by making the detection system flexible rather than static, improving reliability without sacrificing precision.
Solution Approach 2:
The system changes the operational parameters of the display device based on the mobile terminal's screen state. When the mobile terminal screen is on, the display device displays communication information. When the mobile terminal screen is off, the display device displays its own screen content. This parameter change approach allows the system to adapt to different scenarios, resolving the reliability-precision contradiction.
2Ease of operation
If the display device continuously operates to provide full functionality, then user convenience is improved, but power consumption increases
Solution Approach 1:
The display device operates in periodic cycles, switching between different operational states based on the mobile terminal's screen state. When the mobile terminal screen is on, the display device activates to show communication information. When the mobile terminal screen is off, the display device enters a lower-power state showing only essential content. This periodic operation maintains user convenience while significantly reducing overall power consumption.
Solution Approach 2:
The system automatically detects the mobile terminal's screen state and adjusts its own operation accordingly without requiring user intervention. The display device self-manages its power consumption by activating only when necessary, based on the coupled mobile terminal's state, thus providing convenience while optimizing energy usage.
3Use of energy by moving object
If the display device provides limited functions after automatic connection, then power consumption is reduced, but functionality and user experience are limited
Solution Approach 1:
The display device dynamically adjusts its functionality based on the mobile terminal's screen state. When the mobile terminal screen is on, the display device provides full functionality by displaying communication information. When the mobile terminal screen is off, it provides limited functionality by displaying essential content. This dynamic adaptation resolves the contradiction between power consumption and functionality.
Solution Approach 2:
The system applies different functional qualities to different operational contexts. Instead of providing uniform functionality across all states, it tailors the display content and operational capabilities to the specific situation (mobile terminal screen on or off), thus optimizing the balance between power consumption and functionality.
4Device complexity
If the display device uses conventional sensor-based proximity detection, then the system is simple, but the detection accuracy is reduced due to false positives
Solution Approach 1:
The mobile terminal acts as an intermediary that provides screen state information to the display device. Instead of relying solely on complex sensor arrays in the display device, the system uses the mobile terminal's screen state as a mediator to infer proximity and operational context, thereby maintaining simple hardware while achieving high detection accuracy.
Data Source
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AI summary
A display device includes one or more sensors configured to obtain sensing data, a display, a communication interface configured to perform short-range wireless communication with a mobile terminal, and a processor configured to detect proximity of an object based on the obtained sensing data, perform automatic connection with the mobile terminal when the proximity of the object is detected, and display, on the display, information received from the connected mobile terminal.