Display Apparatus ARC eARC Auto-Detection
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Solution Overview
Problem
Existing display apparatuses face challenges in dynamically determining and initializing connections with external speakers supporting either ARC or eARC functions, requiring manual user settings and lacking efficient methods to differentiate between the two for optimal audio return channel establishment.
Innovation Solution
The display apparatus employs a method to detect external speakers by outputting a high-level Hotplug signal and monitoring for common-mode data packets, sending heartbeat packets, and determining the type of ARC function supported, allowing dynamic switching between initialization processes for ARC and eARC connections without user intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display apparatus uses a fixed initialization process for ARC connections, then compatibility with ARC devices is maintained, but the ability to support eARC function is lost and manual user settings are required
Solution Approach 1:
The patent implements dynamic initialization by detecting the type of external speaker (ARC or eARC) and automatically switching between different initialization processes. The processor monitors communication protocols and adaptively adjusts the initialization sequence, transforming a static fixed process into a dynamic adaptive one that resolves the contradiction between versatility and complexity.
Solution Approach 2:
The display apparatus performs self-detection and self-initialization by automatically identifying whether the connected device supports ARC or eARC functions. The system autonomously selects the appropriate initialization process without requiring manual user configuration, enabling the device to serve itself and eliminate the need for user intervention while supporting multiple functions.
2Extent of automation
If the display apparatus requires manual user settings to differentiate between ARC and eARC devices, then initialization accuracy is maintained, but user operation complexity increases and automation is reduced
Solution Approach 1:
The patent employs feedback mechanisms where the display apparatus sends detection signals to the external speaker and analyzes the response to determine device type. The system continuously monitors communication characteristics and uses this feedback to accurately identify whether the device supports ARC or eARC, achieving high precision automatic detection without manual intervention.
Solution Approach 2:
The patent introduces an intermediary detection mechanism that mediates between the display apparatus and the external speaker. This intermediary process automatically exchanges identification signals and protocols, enabling the system to accurately determine device type through automated communication rather than direct user input, thus maintaining precision while improving automation.
3Ease of operation
If the display apparatus implements automatic detection of external speakers, then user operation is simplified, but the detection and measurement complexity increases
Solution Approach 1:
The patent segments the detection process into distinct stages: initial connection detection, protocol capability inquiry, and device type classification. By dividing the complex detection task into manageable segments, the system simplifies the overall operation for users while systematically handling the technical complexity of differentiating between ARC and eARC devices through structured multi-step detection.
Data Source
AI summary
A display apparatus includes: a display; an input interface; and a processor in connection with the display and the input interface and configured to: upon detecting access of a first power amplifier device, output a high-level Hotplug signal at a Hotplug port of the display apparatus; monitor whether a common-mode data packet from the first power amplifier device is received within a first preset duration; in response to the common-mode data packet being received within the first preset duration, send a heartbeat packet to the first power amplifier device, and monitor whether a heartbeat response is received within a second preset duration; in response to the heartbeat response being received within the second preset duration, determine that the first power amplifier device supports e-ARC function; and in response to the heartbeat response being not received within the second preset duration, determine that the first power amplifier device supports ARC function.