Mobile Device Streaming Media Quality Assessment System
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Solution Overview
Problem
Existing methods fail to objectively evaluate and compare the performance of mobile telephone devices in varying radio environments for streaming media reception and playback, lacking consistency and ease of use for technicians.
Innovation Solution
A system that wirelessly receives and processes streaming audio-video content with marked video frames and audio segments, allowing for objective quality assessment of both audio and video output without requiring custom software or modifications to the device, and enabling testing in various environments, including moving vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional streaming media services are delivered via wire or cable, then transmission quality is highly consistent, but mobile telephone devices are subjected to varying radio environments which result in highly varying transmission quality
Solution Approach 1:
The patent introduces a standardized test signal as an intermediary that is embedded within the streaming media content. This test signal serves as a mediator between the variable radio environment and the quality assessment system, allowing objective measurement of transmission quality regardless of environmental conditions. The test signal is processed through the mobile device's reception and playback chain, enabling evaluation of how the device handles varying radio conditions.
Solution Approach 2:
The patent employs parameter changes by analyzing specific characteristics of the test signal (such as audio frequency responses and video frame markers) to determine quality metrics. By measuring changes in these parameters after transmission through the mobile device, the system can objectively assess transmission quality and correlate it with human-perceived quality across different radio environments.
2Adaptability or versatility
If multiple different designs of telephone devices are used, then device capability and features vary, but performance characteristics for data services differ due to design variations
Solution Approach 1:
The patent creates a universal test methodology that can be applied to all mobile telephone devices regardless of their specific design or capabilities. The standardized test signal and assessment protocol serve as a universal tool that works across different device types, enabling consistent performance measurement. This universal approach allows comparison of diverse devices on a common basis without requiring device-specific customization.
Solution Approach 2:
The patent uses a reference or baseline test signal that is copied and transmitted through each device under test. By comparing the output against the known input test signal, the system can precisely measure performance differences between devices. The test signal acts as a reference copy that enables objective comparison across multiple device designs.
3Measurement precision
If a testing system requires custom software or modifications to the telephone device, then measurement capability is enhanced, but ease of operation and deployment are reduced
Solution Approach 1:
The patent implements self-service by designing a test system that uses standard media players and common output devices already present in mobile devices. The system leverages the device's existing capabilities to process and output the test signal, eliminating the need for custom software or specialized hardware modifications. This self-service approach simplifies deployment and operation while maintaining measurement precision.
Data Source
AI summary
A system and method of determining the quality of audio-visual services of a mobile telephone is provided. In one embodiment, the method includes wirelessly receiving streaming audio-video content at the mobile telephone and wherein the audio-video content comprises video content and audio content. The video content is formed of a plurality of video frames with each encoded with one or more video symbols. The audio content is formed of a plurality of audio segments with each encoded with a sequence of tones. The method further includes outputting the audio content with the mobile telephone and displaying the video content with the mobile telephone. A computer processes the video symbols of each video frame of the displayed video content to determine a video quality of the displayed video content and processes the sequences of tones of the outputted audio content to determine an audio quality of the outputted audio content. The determined audio and video quality is then output by the computer.