Projection Display Image Adjustment Across Installation States
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Solution Overview
Problem
Projection-type display devices face difficulties in intuitively adjusting projected images across various installation states, including horizontally installed, suspended, and vertically installed configurations, as the direction of image adjustment differs significantly, leading to user confusion.
Innovation Solution
A projection-type display device equipped with an operation signal detector, installation state detector, and controller that adjusts the projected image based on detected installation states, swapping the adjustment ranges and directions for left-right and up-down movements when transitioning between horizontal and vertical states, ensuring consistent intuitive control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the projection-type display device is used in different installation states (horizontally installed or vertically installed), then the device can adapt to various mounting environments and usage scenarios, but the direction of image adjustment becomes inconsistent leading to user confusion
Solution Approach 1:
The patent applies dynamics by making the control system adaptive rather than static. The controller dynamically adjusts the mapping between operation signals and image adjustment directions based on the detected installation state. When the device transitions from horizontal to vertical installation, the system automatically reconfigures the control logic to maintain intuitive operation, ensuring that up/down keys consistently adjust vertical positioning and left/right keys consistently adjust horizontal positioning regardless of physical orientation
Solution Approach 2:
The patent changes the control parameter mapping based on installation state detection. The system detects whether the device is horizontally or vertically installed and accordingly swaps or maintains the mapping between operation signal directions and image adjustment directions. This parameter reconfiguration ensures that the control interface remains intuitive across different physical installations, resolving the contradiction between versatility and ease of operation
2Ease of operation
If the device detects and switches adjustment directions based on installation state, then operational consistency is improved, but device complexity increases due to additional detection and control logic
Solution Approach 1:
The patent implements self-service by enabling the projection device to automatically detect its own installation state and autonomously adjust the control parameter mapping without user intervention. The built-in detection unit identifies whether the device is horizontally or vertically installed, and the controller automatically configures the appropriate adjustment direction mapping, eliminating the need for manual setup or complex user configuration procedures
Solution Approach 2:
The patent employs feedback by using the detection unit to continuously monitor the installation state and feed this information back to the controller. The controller then adjusts the operation signal interpretation based on this feedback, ensuring that the control system always operates in accordance with the actual physical orientation of the device, thereby maintaining operational consistency without requiring additional user input
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to intuitively and consistently adjust projected images regardless of the device's installation state, maintaining accurate control and clarity in image positioning and shape adjustments.
Implementation Method 1
an acceleration sensor to detect whether the projection-type display device is in the horizontally installed state or the suspended state
Data Source
AI summary
A projection-type display device includes: an operation signal detector, configured to receive an operation signal that indicates adjustment content of a projected image that was instructed by way of an operation unit; an installation state detector, configured to detect, as an installation state of the projection-type display device, a first state and a second state that is rotated 90 degrees from the first state around an axis that is parallel to an optical axis of a projection lens; and a controller that, upon detecting a signal that corresponds to a first direction by way of the operation signal detector in the first state and the second state, adjusts the projected image by causing the projected image to shift in the first direction, or adjusts the projected image by causing a correction-object site in the projected image to move in the first direction.