Wireless Reception Device APL Generation for Stable Display
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Solution Overview
Problem
In wireless display systems, the transmission of average picture level (APL) data is not smooth due to obstacles or signal interference, leading to image quality deterioration such as flickering in the A/V reception device when the wireless signal deteriorates or disconnects.
Innovation Solution
A wireless reception device generates APL data by itself using previous image data or APL data stored in memory when the wireless quality is abnormal, allowing it to display a stable image frame based on detected wireless quality issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If APL data is transmitted wirelessly from transmission device to reception device, then image quality can be maintained, but signal interference and obstacles cause transmission instability leading to image flickering
Solution Approach 1:
The wireless reception device generates APL data independently by processing received image data itself, eliminating dependence on continuous APL data transmission from the transmission device. This self-service capability ensures stable image display even when wireless transmission of APL data is interrupted due to signal interference or obstacles.
Solution Approach 2:
The reception device calculates and stores APL data in advance based on received image data, so that when transmission interruptions occur, the pre-calculated APL data can be used to maintain stable image display without waiting for interrupted transmission to resume.
2Device complexity
If APL data transmission depends on wireless connection, then system simplicity is maintained, but image quality deteriorates when wireless signal is poor
Solution Approach 1:
The reception device performs self-service by independently calculating APL data from received image data, removing the critical dependency on continuous APL transmission. This maintains system simplicity while ensuring image quality stability during wireless transmission interruptions.
Solution Approach 2:
The system changes the parameter of APL data acquisition from external transmission-dependent to internal self-calculation, allowing the reception device to generate APL data locally from image data, thereby maintaining image quality stability regardless of wireless signal conditions.
3Measurement precision
If APL data is continuously transmitted, then image display accuracy is maintained, but wireless bandwidth is consumed and transmission delays occur
Solution Approach 1:
The patent extracts the APL data generation function from the transmission device and relocates it to the reception device. The reception device calculates APL data locally from received image data, eliminating the need for continuous APL transmission and reducing transmission delays while maintaining image display accuracy.
Solution Approach 2:
The reception device performs self-service by independently generating APL data from received image data, eliminating dependence on continuous transmission. This reduces transmission bandwidth consumption and delays while maintaining accurate image display.
Data Source
AI summary
A wireless reception device, according to the present disclosure, can autonomously generate APL data for a video signal, when the wireless reception device cannot receive APL data transmitted by a wireless transmission device due to deterioration and disconnection of a wireless signal.