Video Processor Mute Video Insertion for Noise Screen Prevention
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Solution Overview
Problem
Video processors fail to prevent noise screens at receiving terminals when the input video signal becomes idle, unstable, or terminated, leading to a poor user experience due to protocol differences between transmission and receiving terminals.
Innovation Solution
A video processing method and processor that detect signal instability and autonomously output a mute video by inserting a general control packet into output frames, preventing noise screens and improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the video processor directly transmits the input video signal without additional processing, then the device complexity is reduced, but noise screens appear on the receiving terminal when the input signal becomes idle or unstable
Solution Approach 1:
The video processor detects signal instability conditions (idle, unstable, or terminated status) in advance and proactively outputs a mute video before the receiving terminal displays noise. This preliminary action prevents the harmful effect from occurring by preparing a replacement video signal when instability is detected.
Solution Approach 2:
A mute video is introduced as an intermediary element between the unstable input signal and the receiving terminal. When the input video becomes idle or unstable, the video processor switches to outputting the mute video, which acts as a buffer to prevent noise from reaching the terminal. This intermediary solution resolves the contradiction by adding minimal complexity while effectively eliminating the harmful noise screen effect.
2Object-affected harmful factors
If the video processor outputs a mute video when the input signal is unstable, then the noise screen is prevented, but the device complexity increases due to additional detection and control modules
Solution Approach 1:
The video processor integrates multiple functions into a unified system: it simultaneously performs video signal conversion between different protocols, detects signal stability conditions, and switches between normal video output and mute video output. This multi-functionality approach reduces overall device complexity by consolidating what could be separate components into a single integrated processor.
Solution Approach 2:
The system changes the output video parameter from normal video signal to mute video signal based on the detected input signal status. By controlling the video output parameter (presence or absence of video content) rather than adding complex processing, the solution prevents noise screens while maintaining relatively simple device architecture. The general control packet mechanism also simplifies the switching control.
3Ease of operation
If the video processor switches to mute video output when input signal becomes idle or unstable, then user experience is improved, but the loss of video information occurs during the transition
Solution Approach 1:
The system converts the harmful effect of signal instability (which would cause noise screens) into a beneficial state by switching to a controlled mute video output. Instead of allowing uncontrolled noise to display, the system deliberately transitions to a known good state (mute video with proper control packets), which prevents the harmful effect while maintaining protocol compliance and user experience.
Data Source
AI summary
A video processing method and a video processor are provided. The video processing method can be utilized in a video processing system that includes a transmission terminal for generating an input video, the video processor, and a receiving terminal for receiving an output video. The method includes determining whether or not the input video is in at least one of an idle status, an unstable status and a terminated status; switching from outputting the output video to outputting a mute video when the input video is determined to be in at least one of the idle status, the unstable status and the terminated status; inserting a first general control packet for setting mute into one of a plurality of output frames of the mute video; and stopping outputting the mute video after the plurality of output frames of the mute video are outputted.