Projector Automatic Input Switching via Wireless Detection
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Solution Overview
Problem
Conventional display techniques require cumbersome switching operations when transitioning between projecting a PC screen and an image from a digital camera, as they necessitate manual connection and disconnection of cables or operation of a switching unit.
Innovation Solution
A display apparatus equipped with a detection unit for wireless interface connections and a display unit that automatically switches between video inputs from a video terminal and a wireless interface, allowing seamless switching by detecting connection or disconnection, thereby eliminating the need for manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual switching operation is used to switch between PC screen and digital camera image, then the switching function can be achieved, but the operation becomes cumbersome and time-consuming
Solution Approach 1:
The projector performs preliminary detection of the digital camera's presence through wireless communication before the user needs to switch inputs. When the camera is detected, the projector automatically prepares to receive and display its image, eliminating the need for manual switching operations and reducing switching time.
Solution Approach 2:
The projector autonomously detects the digital camera's connection status through wireless communication and automatically switches between PC screen and camera image display without requiring user intervention. The system serves itself by monitoring wireless signals and performing automatic input switching based on detected presence or absence of the camera.
2Extent of automation
If wireless interface is used for digital camera connection, then automatic switching becomes possible, but the system complexity increases
Solution Approach 1:
The projector incorporates a wireless communication interface that serves multiple functions: detecting the digital camera's presence, establishing connection status, and triggering automatic switching. This multi-functional approach enables automatic switching while minimizing additional system complexity by reusing the wireless interface for multiple purposes.
Data Source
AI summary
Upon bringing a digital camera having a near field wireless communication function close to a projector while a display apparatus displays a screen of a PC using the projector, the display apparatus decodes and displays an image from the digital camera in place of the screen of the PC.