Video Projector Light Source Replacement Detection
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Solution Overview
Problem
In video projectors with multiple light sources, replacing a non-functional light source while others are still lit can result in partial image loss, as existing systems require displaying a setting screen to change the lighting state, disrupting the image display.
Innovation Solution
A video projector with a light source replacement detection unit, memory unit, and control unit that automatically or manually changes the lighting state of the remaining light sources without displaying a setting screen, ensuring continuous image projection by storing and retrieving lighting state information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a setting screen is displayed to change the lighting state after light source replacement, then the lighting state can be adjusted, but the image display is interrupted and partial image cannot be shown
Solution Approach 1:
The control unit stores in advance the lighting state information (which light sources should be lit) in a memory unit before replacement occurs. When replacement is detected, the control unit automatically retrieves and applies the stored lighting state information, eliminating the need for manual setting screens and maintaining continuous image display without interruption.
2Adaptability or versatility
If manual setting screen is used to select lighting combination after replacement, then lighting state can be changed, but image projection is stopped
Solution Approach 1:
The system performs self-service by automatically detecting the light source replacement and autonomously adjusting the lighting state based on pre-stored information. The control unit monitors the replacement event, retrieves the appropriate lighting configuration from memory, and applies it automatically without requiring user intervention or stopping the projection, thus eliminating both the setting screen requirement and projection downtime.
3Extent of automation
If light source replacement is detected automatically, then lighting state can be changed without setting screen, but device complexity increases
Solution Approach 1:
The control unit implements a feedback mechanism by detecting the light source replacement event (through monitoring the light source status) and automatically responding by adjusting the lighting state based on pre-stored information. This closed-loop feedback system enables automated replacement detection and response, achieving the desired automation while managing complexity through a straightforward detect-retrieve-apply sequence.
Data Source
AI summary
A video projector including a plurality of light sources is configured to project and display an image using light emitted from at least one of the light sources so that each light source is replaceable while other light sources are lit. The video projector includes a light source replacement detection unit that detects replacement of one or more light sources, a memory unit that stores information related to a combined lighting state of the light sources, and a control unit that changes the combined lighting state of the light sources when the replacement of at least one light source is detected without displaying, on the projected image, a setting screen used to change the combined lighting state.