Input Source Search Support for Projectors
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Solution Overview
Problem
Existing input source search methods for projectors and image display apparatuses are cumbersome, as they require sequential checking of multiple input sources, including unavailable ones, and fail to visually indicate when no image signal is received from any source, leading to user confusion and decreased usability.
Innovation Solution
An input source search support method that visually indicates the presence or absence of image signals for each input source, automatically skipping unavailable sources and allowing selection of stand-by sources, with a control system that displays search status and returns to initial settings when no signal is detected, enhancing user experience and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sequential checking of multiple input sources is performed, then all input sources including unavailable ones are checked, but the process becomes complicated and inconvenient
Solution Approach 1:
The patent extracts and separates the checking process for available input sources from unavailable ones. The control unit detects which input sources are currently available (receiving image signals) and which are unavailable, then performs the search process only on available sources. This extraction eliminates the need to sequentially check all sources including unavailable ones, resolving the contradiction between completeness and convenience.
2Ease of operation
If automatic skipping of unavailable input sources is implemented, then search process is facilitated, but no visual indication is provided when no signal is received from any source
Solution Approach 1:
The patent implements feedback by having the control unit display information indicating whether an image signal is received from any input source. When no signal is detected from any source, the control unit displays a specific message or status to inform the user. This feedback mechanism maintains the simplified automatic skipping process while preventing information loss about signal availability status.
3Measurement precision
If all input sources are checked sequentially, then availability of each source can be confirmed, but user confusion increases when no signal is detected
Solution Approach 1:
The patent applies preliminary action by having the control unit proactively display information about signal reception status before the user experiences confusion. When the search is completed and no signal is detected from any source, the control unit immediately displays a clear indication message. This preliminary information provision prevents user confusion by maintaining accurate, real-time feedback throughout the search process.
Data Source
AI summary
An image display apparatus for displaying an image produced by image signals on a display section includes: a plurality of input terminals for receiving each of the image signals supplied from a plurality of input sources; an input selector for selecting a predetermined input terminal from the plural input terminals; a judging section for determining whether the image signals have been inputted to the input terminal selected by the input selector; an operating section which receives requirement of search processing for determining whether the image signals have been inputted to each of the plural input terminals; an image signal correcting section which generates image signals for producing a source search screen indicating search status for each of the input source names corresponding to the input terminals; and a control section for displaying an image of the source search screen produced by the image signals at least on the display section in response to search processing executed through the operation section.