Lossy Lossless Display Update Compression for Distributed Systems
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Solution Overview
Problem
Graphically intense applications in distributed computing systems experience performance issues due to large bandwidth requirements for frequent display updates, leading to delays and a poor user experience.
Innovation Solution
A method involving a shared queue and cache system that applies lossy compression to display updates before transmission, followed by a lossless compression after a predetermined time, to reduce network traffic and improve update efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If lossless compression is used for display updates, then image quality is preserved, but network bandwidth consumption increases and update speed decreases
Solution Approach 1:
The patent applies lossy compression selectively to portions of the display update that are less critical to visual quality, while preserving lossless compression for important regions. This partial application of compression allows faster processing and lower bandwidth consumption while maintaining acceptable overall display quality.
Solution Approach 2:
The patent dynamically adjusts compression parameters based on the specific characteristics of the display content, such as changing compression ratios for different regions or types of graphical elements. This allows optimization of the balance between quality and speed for each update scenario.
2Ease of operation
If frequent display updates are transmitted, then user experience is improved, but network bandwidth is exhausted
Solution Approach 1:
The patent extracts and transmits only the essential visual information from display updates, removing redundant or less important data elements. This extraction approach maintains user experience by preserving key visual changes while significantly reducing the quantity of data transmitted over the network.
Solution Approach 2:
The patent applies compression selectively to different portions of the display update, using lossy compression for less critical areas and lossless compression for important regions. This partial application reduces overall data transmission requirements while maintaining acceptable visual quality for the user.
3Measurement precision
If high-quality display updates are transmitted, then visual fidelity is maintained, but transmission time increases
Solution Approach 1:
The patent dynamically changes compression parameters based on the importance and characteristics of different display regions. By adjusting compression ratios and algorithms according to content type, the system maintains visual fidelity for critical elements while reducing transmission time for less important areas.
Solution Approach 2:
The patent divides the display update into multiple segments or regions of different importance, applying different compression strategies to each segment. This segmentation allows selective preservation of visual fidelity for critical regions while accepting higher compression for non-critical regions, overall reducing transmission time.
Data Source
AI summary
A system and method for updating a remote display unit that communicates with a computing system are described. The method includes accessing display update information from an update queue that stores drawing commands issued by an application executing on the computing system, caching the display update information, applying a lossy compression algorithm to the display update information to create a lossy display update, and transmitting the lossy update to the remote display. The method also includes applying a lossless compression algorithm to the display update information in the cache to create a lossless display update and transmitting the lossless display update a predetermined of time after transmitting the lossy update.