Display Input Signal Detection with Dynamic Time Adjustment
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Solution Overview
Problem
Display apparatuses often fail to receive external signals due to environmental factors, leading to inconvenience as users must manually switch input terminals, and existing systems do not effectively adjust detection times for late signal inputs.
Innovation Solution
A display apparatus with a signal detector that checks multiple input sources in sequence for a predetermined time, adjusting the detection time if no signal is detected, and a controller that calculates a maximum necessary time for signal input, storing this time for future reference to automatically switch to active input sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display apparatus uses a fixed predetermined time for detecting input signals, then the detection process is simple and fast, but it fails to recognize input sources that transmit signals later than the fixed time
Solution Approach 1:
The patent applies dynamics by making the detection time adjustable rather than fixed. The controller dynamically changes the detection time based on whether signals are received during the initial predetermined period. If no signal is detected within the fixed time, the system extends the detection period to a longer predetermined time, allowing late-arriving signals to be captured while maintaining simple fixed-time detection for normal cases.
Solution Approach 2:
The patent changes the time parameter of the detection process based on signal reception status. The detection time is set to a first predetermined time initially, and if no signal is received, it is changed to a second predetermined time that is longer than the first. This parameter change allows the system to adapt to different signal transmission scenarios without complex structural modifications.
2Ease of operation
If the display apparatus manually switches input terminals when signal reception fails, then the switching process is straightforward, but user convenience is reduced due to required manual intervention
Solution Approach 1:
The patent implements self-service by enabling the display apparatus to automatically detect signal reception status and switch input terminals without user intervention. The controller monitors whether signals are received during the detection period and automatically switches to alternative input terminals if signal reception fails, allowing the system to serve itself rather than requiring manual user operation.
Solution Approach 2:
The patent uses feedback by continuously monitoring signal reception status and using this information to control automatic switching decisions. The controller receives feedback about whether signals are detected within the predetermined time and automatically adjusts input terminal switching based on this feedback, creating a closed-loop control system that improves user convenience.
3Reliability
If the display apparatus extends detection time for all input sources, then late signals are captured, but the overall detection process becomes slower and less efficient
Solution Approach 1:
The patent applies partial action by extending the detection time only when necessary - specifically, only when no signal is detected during the initial first predetermined time period. For input sources that transmit signals on time, the system uses the shorter first predetermined time, avoiding unnecessary time extension. This partial application of time extension minimizes overall time loss while ensuring late signals are captured when needed.
Data Source
AI summary
A display apparatus capable of adjusting the time for detecting input signals from an external input source is provided. The display apparatus includes a signal detector which checks a plurality of input sources in sequence for a predetermined basic time and detects signals input from the plurality of input sources, and a controller which controls the signal detector to adjust the basic time and recheck the plurality of input sources if no signal is detected within the basic time. Accordingly, it is possible to recognize an input source from which input signals are detected late.