Media Playback Volume Control Under Maximum Volume Limits
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Solution Overview
Problem
Existing media playback systems with a maximum volume feature can misinterpret user volume adjustments, leading to a suboptimal user experience as the system sets the volume to a predefined maximum level instead of the requested level, causing confusion and perceived ignoring of user inputs.
Innovation Solution
Implementing a maximum volume state variable that allows playback devices to calculate an alternate volume level based on the requested level and share a representative volume level with other devices, ensuring user requests are honored while maintaining the maximum volume constraint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system enforces a maximum volume constraint to prevent harmful loud sounds, then safety and reliability are improved, but the system cannot fulfill user requests for higher volume levels, causing user input to be ignored and user experience to deteriorate
Solution Approach 1:
The patent introduces a representative volume level as an intermediary between the actual constrained volume level and the user's requested volume level. When a user requests a volume exceeding the maximum constraint, the system calculates a representative volume level that reflects the requested level while the actual volume is capped at the maximum. This intermediary representation allows the system to enforce safety constraints while still providing feedback that acknowledges and responds to user input, thereby maintaining ease of operation.
2Reliability
If the system sets volume to the maximum predefined level when a higher volume is requested, then the maximum volume constraint is maintained, but the user perceives their input as being ignored, leading to confusion and poor user experience
Solution Approach 1:
The patent implements a feedback mechanism where the controller device receives and displays the representative volume level that corresponds to the user's requested volume level, even when the actual volume is constrained to the maximum. This feedback loop ensures that user input is recognized and reflected in the system's response, preventing the perception that user input is being ignored while still maintaining the maximum volume constraint for safety reasons.
3Device complexity
If the system uses a single volume level variable to represent both actual and requested volume, then device complexity is reduced, but the system cannot simultaneously enforce maximum volume constraints and accurately represent user-requested volume levels
Solution Approach 1:
The patent segments the volume control system into distinct components: an actual volume level variable that enforces the maximum constraint, and a representative volume level variable that reflects user requests. This segmentation allows the system to maintain simple individual variables while achieving the flexibility needed to simultaneously enforce constraints and represent user intent, effectively resolving the contradiction between device complexity and adaptability.
Data Source
AI summary
Disclosed herein are embodiments for adjusting playback volume in a media playback system that utilizes a maximum volume feature. In one embodiment, when a playback device receives an instruction to change its playback volume to a requested volume level, the playback device will not necessarily set its playback volume state variable to the requested volume level, but rather will calculate a new (typically lower) alternate volume level based on the maximum volume state variable and instead set its playback volume state variable to that alternate volume level. Moreover, when a playback device shares certain of its state variables among the other devices of the media playback system, the playback device will not necessarily share its actual playback volume state variable, but rather will calculate a new (typically higher) representative volume level and instead share that representative volume level.