Mobile Video Call Quality Adaptation for Driver Safety
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Solution Overview
Problem
Video calls on mobile devices often fail or suffer reduced quality due to insufficient resources, and existing solutions focus on hiding these issues rather than addressing them directly, while also posing safety risks and resource wastage when used by drivers, who may be distracted and causing excessive network traffic.
Innovation Solution
A method that restricts video information displayed on a mobile device based on its speed, limiting video frames, display size, or resolution when the device is traveling above a certain speed threshold to prevent distraction and conserve resources, with the communication client application receiving speed indications and adjusting the video call display accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video information is displayed at full quality during mobile video calls, then video call quality is improved, but driver distraction and safety risks increase when traveling at high speeds
Solution Approach 1:
The system dynamically adjusts video display quality based on the detected speed of the mobile device. When the device detects high-speed travel (above threshold 30 mph), it automatically reduces video frame rate, resolution, or disables video display entirely, while maintaining audio communication. This dynamic adaptation resolves the contradiction by making video quality flexible rather than fixed, allowing high quality when safe and reducing quality when safety is at risk.
Solution Approach 2:
The system changes key parameters of video display (frame rate, resolution, display activation) based on speed conditions. By monitoring device speed and adjusting video parameters accordingly, the system maintains optimal video quality during low-speed usage while preventing driver distraction during high-speed travel, thus resolving the contradiction between quality and safety.
2Duration of action of stationary object
If video calls are conducted at high speeds, then communication continuity is maintained, but device and network resources are wasted due to unnecessary high-quality video transmission
Solution Approach 1:
The system applies partial action by providing only the necessary communication function at high speeds rather than full video quality. When detecting high-speed travel, the system maintains audio communication (partial functionality) while eliminating or reducing video transmission, thus preserving communication continuity while conserving device battery and network bandwidth resources that would otherwise be wasted on unnecessary high-quality video.
Solution Approach 2:
The system changes video transmission parameters (frame rate, resolution, or complete disabling) based on speed conditions. This parameter adaptation ensures communication continuity is maintained through audio while preventing resource waste by adjusting video quality to match the actual usage context of high-speed travel.
3Manufacturing precision
If full video information is transmitted during mobile video calls, then video quality is improved, but network bandwidth consumption increases
Solution Approach 1:
The system dynamically adjusts video transmission quality based on detected speed conditions. During high-speed travel, it reduces video frame rate, resolution, or disables video transmission entirely, thereby significantly reducing network bandwidth consumption while maintaining audio communication. This dynamic adjustment resolves the contradiction by making bandwidth consumption adaptive to actual usage needs.
Solution Approach 2:
The system changes video transmission parameters (frame rate, resolution, activation status) based on speed thresholds. By monitoring device speed and adjusting video parameters accordingly, the system maintains high video quality when bandwidth is needed (low-speed conditions) while reducing bandwidth consumption during high-speed travel when video display is less critical.
Data Source
Figure 1
Figure 2a~2b
Figure 2c
AI summary
A mobile device, and a method and computer program product for displaying a streaming video image at the mobile device during a packet based video call via a channel established over a wireless communication network, the method comprising: receiving a speed indication of the mobile device and sending said indication to a communication client application; and responsive to receiving said indication, the communication client application configured to limit the amount of information in the streaming video image that is supplied for display on a display means of the mobile device during the video call when the speed of the mobile device is greater than, or equal to, a first predetermined speed threshold.