Television Input Port Status Detection via Sub-Screen Processor
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Solution Overview
Problem
Users face difficulties in determining the status of multiple signal input ports on a television receiver without interrupting the broadcast signal, as conventional methods require manual selection and manipulation of each port through an on-screen display menu.
Innovation Solution
A method utilizing a sub-screen signal processor to detect signal presence at each port by placing the television receiver in a muted picture-in-picture mode, allowing automatic detection and recognition of valid input ports without interrupting the main screen viewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual selection of each signal input port is performed through OSD menu, then the user can determine the status of each port, but the operation becomes complex and time-consuming
Solution Approach 1:
The television receiver automatically performs input port status detection without requiring user intervention. The system self-services by sequentially switching through input ports and using the sub-screen signal processor to detect signal presence, eliminating the need for manual OSD menu operations while maintaining accurate status determination
Solution Approach 2:
The system performs preliminary signal presence detection at each input port before presenting information to the user. By pre-detecting which ports have active signals and preparing the status information in advance, the system eliminates the need for complex real-time user interaction during the detection process
2Measurement precision
If manual selection of each signal input port is performed through OSD menu, then the user can determine the status of each port, but the process interrupts broadcast signal viewing
Solution Approach 1:
The input port status detection is performed periodically in the background without interrupting the continuous broadcast signal viewing. The system uses periodic sequential switching through input ports and background signal detection, allowing both functions to coexist without mutual interruption
Solution Approach 2:
The sub-screen signal processor acts as an intermediary that enables simultaneous broadcast viewing and input port detection. By processing sub-screen signals separately from the main broadcast signal, the system allows both operations to occur concurrently without interference or viewing interruption
3Adaptability or versatility
If the television receiver provides multiple signal input ports for various peripheral devices, then the adaptability increases, but the device complexity increases
Solution Approach 1:
The system provides automatic feedback about which input ports have active signals connected to them. By detecting signal presence and presenting this information to the user, the system simplifies the management of multiple input ports, allowing users to quickly identify connected devices without manually checking each port
Solution Approach 2:
The television receiver automatically manages and monitors the status of multiple signal input ports without requiring user intervention. The system self-services by continuously detecting signal presence at each port and maintaining updated status information, reducing the complexity of managing multiple connections
Data Source
AI summary
A method of determining the status of a plurality of input ports in a television receiver having a plurality of signal input ports, and including a main-screen signal processor and a sub-screen signal processor, automatically verifies the presence or absence of an input signal at each signal input port. The port status determining method includes detecting signal presence at each of the plurality of signal input ports via the sub-screen signal processor to determine whether the corresponding input signal exists, by sequentially setting an input mode in correspondence to each of the plurality of signal input ports; and recognizing as a valid input port each signal input port at which signal presence is detected.