Projector Mode Switching via Indicator Proximity Detection
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Solution Overview
Problem
Existing display apparatuses require users to perform manual operations to switch modes, which can be labor-intensive and annoying, especially when the indicator is far from the user or not intended to be close to the device.
Innovation Solution
A display apparatus with a determining unit to measure the distance between an indicator and a distance measuring unit, switching modes automatically when the distance is within a threshold, and allowing control based on posture and intended use, reducing unintended mode switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is required to switch modes, then mode switching can be controlled precisely, but user labor and time increase
Solution Approach 1:
The system automatically detects the indicator's proximity to the distance measuring unit and switches modes without user intervention. The determining unit measures distance, and when it falls within the threshold, the switching unit automatically transitions between first mode and second mode, eliminating manual operation requirements.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated sensing system. The distance measuring unit uses optical or electromagnetic fields to detect indicator proximity, and the control system processes this information to trigger automatic mode switching, substituting physical user action with field-based detection and electronic control.
2Ease of operation
If automatic mode switching is implemented based on distance, then user labor is reduced, but unintended mode switching may occur
Solution Approach 1:
The system incorporates temporal dynamics by requiring the indicator to remain within the threshold distance for a predetermined time before triggering mode switching. This dynamic condition prevents accidental switching caused by brief or unintended proximity, while still allowing intentional switching when the user deliberately positions the indicator near the distance measuring unit.
Solution Approach 2:
The system continuously monitors the distance between the indicator and distance measuring unit, providing real-time feedback to the control system. When the distance enters the threshold range, the system prepares for mode switching but waits for the duration condition to be met, then executes the switching and provides feedback confirmation, creating a reliable closed-loop control mechanism.
3Ease of operation
If mode switching is triggered by proximity alone, then operation is simplified, but control precision is reduced
Solution Approach 1:
The control mechanism is segmented into distinct functional units: a distance measuring unit for detecting proximity, a determining unit for evaluating whether the distance is within threshold, and a switching unit for executing mode transitions. This segmentation allows each component to perform its specific function efficiently while maintaining overall system simplicity.
Data Source
AI summary
A projector includes a determining unit configured to determine whether the distance between an operation device and a distance measuring unit configured to measure a distance to the operation device is a first threshold or less, a switching unit configured to switch, when a mode of the projector is a first mode, the mode from the first mode to a second mode when it is determined that the distance between the operation device and the distance measuring unit is the first threshold or less, a detecting unit configured to detect the position indicated by the operation device, and a processing unit configured to, when indication of a first position on the screen is detected, perform first processing corresponding to the first position when the mode is the first mode and perform second processing different from the first processing corresponding to the first position when the mode is the second mode.