Vehicle Electronic Device Volume Control During Content Restriction
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Solution Overview
Problem
Conventional vehicle-mounted electronic devices with content protection technologies face usability issues when unauthorized content reproduction is restricted, as children on rear seats may mistakenly adjust the volume or ask drivers to do so, leading to unexpected high-volume audio output and poor usability for both drivers and passengers.
Innovation Solution
Incorporating an unauthorized content detecting unit that executes audio reproduction restrictions and displays messages indicating volume change operations during restrictions, allowing users to understand the restriction state and adjust accordingly, thereby improving usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If content protection technology is applied to restrict unauthorized content reproduction, then content security is improved, but usability deteriorates due to unexpected high-volume audio output when volume change operations are executed during audio reproduction restriction
Solution Approach 1:
The system provides visual feedback by displaying a message on the display device that clearly indicates the audio reproduction restriction state and informs users that volume change operations will not take effect. This feedback mechanism prevents users from mistakenly believing their volume adjustments are working, thereby avoiding unexpected high-volume audio output while maintaining content protection.
Solution Approach 2:
The control device acts as an intermediary between the reproducing device and the display device, intercepting volume change operations during audio reproduction restriction and preventing them from affecting audio output. Simultaneously, it communicates this restriction state to users through the display device, mediating between content protection requirements and user interaction.
2Reliability
If audio output is stopped to restrict unauthorized content reproduction, then content protection is improved, but user understanding deteriorates as children cannot comprehend why content goes into mute state
Solution Approach 1:
The system provides visual feedback through a message displayed on the display device that explicitly explains the audio reproduction restriction state. This message communicates to users (including children) that the muted state is intentional and protected, rather than indicating a defect or error, thereby improving user understanding while maintaining content protection.
3Measurement precision
If driver stops vehicle to confirm reproduction restriction state in rear seat, then accurate situation confirmation is improved, but productivity deteriorates due to interruption of driving
Solution Approach 1:
The front seat electronic device serves as an intermediary that receives information about the reproduction restriction state from the rear seat display device and presents it to the driver in the front seat. This allows the driver to confirm the situation without leaving the driver's seat or stopping the vehicle, maintaining both accurate information delivery and driving efficiency.
Data Source
AI summary
The present invention has an object to improve usability of a vehicle-mounted electronic device. The vehicle-mounted electronic device is configured to execute, when unauthorized content is detected by an unauthorized content detecting unit, an audio reproduction restriction on a display device, and when a volume change operation is executed during the audio reproduction restriction, to cause the display device to display a message indicating that the volume change operation has been executed during the audio reproduction restriction. More specifically, the displayed message indicates that the audio reproduction restriction associated with the unauthorized content reproduction is executed and the volume change operation is also executed during the execution. Therefore, the volume can be changed when next content is reproduced, resulting in preventing unexpected high-volume audio from being outputted and thus improving usability.