Projector Limited Operation Mode for Multi-Unit Consistency
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Solution Overview
Problem
Existing projector systems that project identical images using multiple projectors cannot operate normally if one projector experiences an abnormality, leading to user operation failure and potential inconsistency in projection states between projectors.
Innovation Solution
A projector system with a determining unit to assess the operation state of another projector and a control unit that shifts to a limited operation mode, limiting specific functions when an abnormality is detected, allowing user operation without causing inconsistency in projection states, and enabling resumption of consistent projection upon the other projector's return to normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If multiple projectors are serially connected to improve brightness through stacked projection, then the brightness of the projected image is improved, but the system cannot operate when one projector experiences an abnormality
Solution Approach 1:
The patent divides the control of multiple projectors into independent segments. Each projector is equipped with independent operation capability and autonomous abnormality detection functionality. When one projector detects an abnormality, it can independently switch to a limited operation mode while other projectors continue normal operation, ensuring system reliability is maintained through segmentation of control functions.
Solution Approach 2:
The patent changes the operational parameters of the projector based on the detected abnormality state. When an abnormality is detected in another projector, the system transitions from a normal operation mode to a limited operation mode, adjusting parameters such as allowing independent operation and modifying remote controller responsiveness. This dynamic parameter change ensures the system adapts to maintain reliability while preserving brightness enhancement capability.
2Stability of the object's composition
If the projector is configured to receive all commands centrally to maintain consistent control, then control consistency is improved, but user operation fails when the central controller experiences an abnormality
Solution Approach 1:
The patent implements dynamic control architecture where the projector's operational mode transitions from centralized control to independent operation based on the abnormality state of other projectors. The system dynamically adjusts its control responsiveness - in normal states, it follows centralized commands for consistency; in abnormal states, it enables independent operation for user accessibility. This dynamic adaptation resolves the contradiction between control consistency and ease of operation.
Solution Approach 2:
The patent prepares the projector in advance by pre-configuring the limited operation mode and pre-establishing the abnormality detection mechanism. When an abnormality occurs in another projector, the system can immediately switch to the pre-prepared limited operation mode, allowing user operation without delay. This preliminary preparation ensures both control consistency is maintained where possible and ease of operation is preserved when needed.
3Ease of operation
If the projector independently executes functions according to user operation, then ease of operation is improved, but inconsistency in projection states occurs between projectors
Solution Approach 1:
The patent applies local quality by selectively limiting specific functions in the limited operation mode rather than disabling all functions. The system identifies and restricts only those functions that would cause projection state inconsistency (such as functions affecting projection geometry or synchronization), while allowing other functions to operate independently. This selective local restriction maintains ease of operation for safe functions while preventing inconsistency in critical projection states.
Solution Approach 2:
The patent implements a feedback mechanism where the projector continuously monitors the operation state of other projectors and adjusts its own operational permissions accordingly. When an abnormality is detected, the system provides feedback by switching to limited operation mode, preventing execution of functions that would create inconsistency. This feedback loop ensures that ease of operation is maintained within the bounds of projection state consistency, as the system automatically adapts its responsiveness based on real-time system state information.
Data Source
AI summary
A projector that performs projection in cooperation with another projector, the projector including a determining unit configured to determine an operation state of the other projector and a control unit configured to control the projector to shift to, when the determining unit determines that the operation state of the other projector is not a normal operation state, a limited operation mode for limiting execution of at least a part of functions.