Subscription Audio Device Emergency Call Compliance
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Solution Overview
Problem
The challenge lies in implementing a Device-as-a-Service model for audio devices, particularly headsets, where ensuring functionality for emergency calls is crucial, yet users often fail to return devices upon subscription termination, making it difficult to manage subscriptions effectively.
Innovation Solution
A subscription-enabled audio device is designed with a speaker, a subscription verification module, and an audio processor that provides a subscription state audio output when the subscription is unsubscribed, allowing the device to remain functional while informing the user of the subscription status, thereby ensuring continued use for emergency calls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the audio device blocks access to functionality upon subscription termination, then the service provider can enforce subscription compliance, but the device cannot remain functional for emergency calls
Solution Approach 1:
The patent applies local quality by differentiating between premium features and basic functionality. Premium features (noise cancellation, spatial audio, etc.) are blocked upon subscription termination, while basic functionality (emergency calls, media playback) remains accessible. This is achieved through the audio processor selectively enabling/disabling specific audio processing algorithms based on subscription status, allowing the device to serve multiple purposes with different quality levels.
Solution Approach 2:
The patent segments the audio device functionality into subscription-dependent features and subscription-independent features. The audio processor divides audio processing into premium algorithms (requiring subscription) and basic algorithms (always available). This segmentation allows independent control of different functional areas, enabling emergency calls to operate while premium features are restricted.
2Adaptability or versatility
If the audio device provides full functionality without subscription verification, then emergency calls remain operational, but users may not be aware of their unsubscribed state
Solution Approach 1:
The patent implements feedback by having the audio processor continuously monitor subscription status through the subscription verification module and provide real-time audio feedback to the user. When subscription is terminated, the system generates audible notifications (watermarking, tone sequences, or voice prompts) that inform users of their unsubscribed state without blocking emergency call functionality. This feedback loop maintains both functionality and awareness.
3Loss of information
If the audio device provides audible notifications of unsubscribed state, then users are informed of subscription status, but the device complexity increases
Solution Approach 1:
The patent merges the subscription verification function with the existing audio processing pipeline. The subscription verification module and audio processor work as an integrated system where subscription status checks are combined with audio rendering operations. Notification tones and watermarks are generated using the same audio synthesis capabilities already present in the device, avoiding the need for separate notification hardware or processing paths.
Data Source
AI summary
A subscription-enabled audio device is provided, which comprises at least a speaker for providing an application audio output; a subscription verification module, allowing to determine a subscription state indicator; and an audio processor for controlling the speaker. To provide an enhanced audio device that is particularly suitable for Device-as-a-Service application, the audio processor is configured to query the subscription verification module to obtain the subscription state indicator and to provide a subscription state audio output in addition to said application audio output to the speaker in case the subscription state indicator corresponds to an unsubscribed state.