Wireless Receiving Apparatus Sub-stream Error Handling
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Solution Overview
Problem
Conventional wireless video transmission systems, such as those using WiHD, often experience reduced image quality when transmitting UHD video due to varying wireless channel conditions, leading to errors and degradation in received video.
Innovation Solution
A wireless receiving apparatus that determines the completion of sub-streams using total transmission period and time index information, temporarily stores incomplete sub-streams, merges them upon completion, and verifies channel index and CRC codes to generate and decompress video frames, ensuring stable transmission and error detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If video data of UHD resolution is transmitted using conventional WiHD-based wireless video transmission systems, then transmission of high-resolution video is enabled, but image quality is reduced depending on wireless channel conditions
Solution Approach 1:
The video frame is divided into multiple sub-streams that are transmitted through different wireless channels. This segmentation allows the system to distribute the transmission load across multiple paths, reducing the impact of poor channel conditions on overall image quality while maintaining reliable reception through diverse transmission paths.
2Reliability
If multiple sub-streams are transmitted through different wireless channels, then reception completion determination becomes complex requiring total transmission period and time index information, but this enables accurate synchronization and merging of sub-streams
Solution Approach 1:
The transmitting apparatus pre-assigns total transmission period information and time index information to each sub-stream before transmission. This preliminary action enables the receiving apparatus to determine reception completion and perform accurate synchronization without complex real-time analysis, reducing reception management complexity while maintaining high synchronization accuracy.
3Manufacturing precision
If sub-streams are temporarily stored in memory upon incomplete reception, then accurate merging can be performed when all sub-streams are received, but this increases memory requirements and processing time
Solution Approach 1:
The receiving apparatus uses time index information to identify when all sub-streams for a complete video frame have been received. This periodic completion detection enables the system to temporarily store sub-streams in memory and perform accurate merging only when the complete frame is available, ensuring video frame accuracy while managing processing time through structured batch operations.
Data Source
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AI summary
A wireless receiving apparatus includes a plurality of wireless receiving modules that receive a plurality of sub-streams constituting a video frame from a wireless transmitting apparatus and a data processing module that determine whether an error occurs in each of the plurality of sub-streams, in response to determining that an error does not occur in any of the plurality of sub-streams, merges the plurality of sub-streams to generate the video frame, transmits the video frame to a display electrically connected to the wireless receiving apparatus, and in response to determining that an error occurs in at least one of the plurality of sub-streams, transmits an immediately-preceding video frame to the display.