TV Remote Control for External Device Operation
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Solution Overview
Problem
Existing AV system technologies allow operation of TVs using a remote control for reproduction apparatuses but struggle to operate reproduction apparatuses using only a TV remote control, due to lack of power keys and menu key transfer capabilities.
Innovation Solution
A video display apparatus with a switching unit to switch inputs to connected reproduction apparatuses, a command input/output unit to manage power and video output commands, and a user input unit to convert user instructions for operation, enabling operation of reproduction apparatuses using a TV remote control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the TV is equipped with multiple external input terminals to connect to multiple external devices, then the adaptability and versatility of the TV is improved, but the device complexity and ease of operation deteriorate due to the need for manual input switching
Solution Approach 1:
The external device automatically performs input switching by sending an instruction signal to the TV when it starts reproduction or displays a menu screen. The TV automatically switches its input terminal based on received signals, eliminating the need for manual user operation. This self-service mechanism resolves the contradiction by maintaining multi-device connectivity while automating the switching process.
Solution Approach 2:
The external device sends an instruction signal in advance before the user needs to view content, automatically switching the TV input to the correct terminal. This preliminary action prevents the need for manual switching at the moment of use, improving ease of operation while preserving adaptability to multiple devices.
2Ease of operation
If the reproduction apparatus sends instruction signals to the TV for automatic input switching, then the ease of operation is improved by avoiding remote control changes, but the device complexity increases due to additional communication protocols
Solution Approach 1:
The instruction signal mechanism is designed to work across different external devices (VTR, DVD recorder, etc.) and TV models through standardized protocols like AV.link and CEC. This universal approach allows a single remote control to operate multiple devices without requiring device-specific complex protocols, resolving the contradiction between ease of operation and device complexity.
3Ease of operation
If the TV remote control is used to operate the reproduction apparatus, then the ease of operation is improved, but the reliability deteriorates due to lack of dedicated power and menu keys
Solution Approach 1:
The TV acts as an intermediary that receives commands from the TV remote control and translates them into appropriate signals for the reproduction apparatus. The TV's command input/output unit processes the remote control signals and sends the corresponding power or menu commands to the external device, ensuring reliable operation even without dedicated keys on the remote control.
Data Source
AI summary
The present invention has an object to operate a reproduction apparatus (an apparatus from which video is inputted) using only a remote control of a video display apparatus. A video display apparatus which displays video includes: a first display unit which displays a menu screen of the video display apparatus; a switching unit which switches a current input to an input from an input source device from which video is inputted when the input source device is indicated in the menu screen displayed by the first display unit; and a second display unit which displays a menu screen of the input source device when the switching unit switches the current input.