Inverted Display Audio Synchronization with Sound Bar Feedback
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Solution Overview
Problem
The interlocking of display devices and sound bars often results in deteriorated audio output quality due to interference between audio outputs from downward-facing speakers in the display device and the sound bar.
Innovation Solution
A display device with an upside-down inverted structure and an HDMI Audio Return Channel (HDMI ARC) connection to a sound bar, where the display device requests and synchronizes audio delay information to determine output timing, ensuring synchronized audio output between the display device and the sound bar.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device and sound bar are interlocked with downward-facing speakers, then audio output functionality is provided, but audio output quality deteriorates due to interference between the display device speakers and sound bar
Solution Approach 1:
The display device is inverted upside-down so that the speakers face upward instead of downward, changing the direction of sound output to prevent interference with the sound bar while maintaining audio output functionality
2Reliability
If the display device is inverted upside-down, then audio interference with the sound bar is prevented, but audio synchronization timing must be adjusted
Solution Approach 1:
The control unit requests audio delay information from the sound bar through HDMI ARC, receives the delay information, and uses it to determine the output timing of audio, creating a feedback loop that ensures synchronized audio output between the inverted display device and sound bar
Data Source
AI summary
A display device according to an embodiment of the present disclosure may comprise: a display unit, an audio output unit disposed below the display unit, an external device interface unit connected to a sound bar through an HDMI Audio Return Channel (HDMI ARC) and a control unit configured to request audio delay information from the sound bar through the external device interface unit in a state in which the display unit is arranged in an upside-down inverted state, receive the audio delay information from the sound bar through the external device interface unit, and determine an output timing of audio based on the received audio delay information.