Compressed Blanking Period Transfer Over Multimedia Links
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Solution Overview
Problem
Conventional HDMI and MHL links are not designed for compressed video content transfer, making it difficult to transfer high-resolution videos due to bandwidth limitations, especially for 8K resolutions.
Innovation Solution
Implementing a system that compresses video data and blanking period data using techniques like run length coding and video compression control information transmission via multimedia channels, allowing for efficient transfer over existing HDMI and MHL links by aligning compressed data with the data path and reducing bandwidth requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uncompressed video is transferred over HDMI and MHL links, then video quality is maintained at best level, but bandwidth requirements exceed link capabilities for high resolution videos
Solution Approach 1:
The patent applies video compression techniques that transform the data representation parameters, converting uncompressed video data into compressed formats (such as H.264, H.265) that require significantly fewer bits to represent the same visual information, thereby reducing bandwidth requirements while maintaining perceptual video quality
Solution Approach 2:
The patent creates a compressed digital representation (copy) of the original video data that contains the essential visual information in a more efficient format, allowing the same video content to be transmitted over links with limited bandwidth capacity
2Quantity of substance
If compressed video data is transmitted over multimedia links, then bandwidth requirements are reduced, but the links were not originally designed for compressed video transfer
Solution Approach 1:
The patent extends the functionality of existing HDMI and MHL links by implementing compression-aware transmission protocols that allow these links to handle both traditional uncompressed video and new compressed video formats, making the links versatile for multiple video transmission modes
Solution Approach 2:
The patent segments the video data transmission into compressed packets with associated metadata and control information, allowing the receiver to properly reconstruct and process the compressed video stream while maintaining compatibility with existing link protocols
3Productivity
If video compression is implemented, then data transfer efficiency is improved, but additional processing complexity is introduced
Solution Approach 1:
The patent performs video compression at the source device before transmission, preparing the data in advance to reduce the processing burden during real-time transmission and reception, thereby improving overall data transfer efficiency while managing complexity at the encoding stage
Data Source
AI summary
A transmitting device for communicating via a multimedia communication link includes a compression circuitry that receives blanking period data corresponding to blanking states of video blanking periods. The compression circuitry compresses the blanking period data into compressed blanking period data. The transmitting device also includes an interface that transmits signals corresponding to the compressed blanking period data via one or more multimedia channels of the multimedia communication link.