Cloud Server Syncing Large Files Using Lossy Formats
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Solution Overview
Problem
Cloud storage systems face challenges in efficiently synchronizing and storing large personal files such as videos and high-resolution photographs, which require significant storage space and often exceed available capacity when stored in a lossless format, while also needing to accommodate devices with limited capabilities.
Innovation Solution
A cloud server system that synchronizes large personal files in a lossless format between local devices, allowing selective storage in lossless or lossy formats based on user preferences or file size, with lossy files used for cloud storage to minimize storage burden and facilitate syncing across devices with varying capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large personal files are stored in lossless format on cloud server, then data integrity is maintained, but cloud storage capacity is quickly exhausted
Solution Approach 1:
The patent applies local quality by storing files in different formats in different locations: lossless format is stored locally on user devices to preserve data integrity, while lossy format is stored on the cloud server to reduce storage burden. This spatial differentiation of file formats resolves the contradiction between maintaining data integrity and conserving cloud storage capacity.
2Manufacturing precision
If all files are stored in lossless format on cloud, then maximum quality is achieved, but storage efficiency decreases
Solution Approach 1:
The patent changes the format parameter of file storage based on location and usage requirements. Lossless format (high quality, large size) is used for local storage, while lossy format (lower quality, small size) is used for cloud storage. This parameter transformation resolves the contradiction between achieving maximum file quality and maintaining storage efficiency.
3Reliability
If lossless files are synced between devices, then data accuracy is preserved, but network bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by transmitting lossless files only between local devices (device-to-device synchronization) rather than through the cloud, preserving data accuracy while avoiding excessive cloud bandwidth consumption. The cloud server stores only lossy versions for remote access, further reducing network load.
4Quantity of substance
If cloud server stores only lossy versions, then storage burden is minimized, but devices with limited capabilities cannot access high-quality files
Solution Approach 1:
The patent implements universality by making the system adaptable to different device capabilities. The cloud server provides lossy versions for devices with limited storage or processing power, while devices with sufficient capabilities can obtain lossless versions through local synchronization. This multi-functional approach ensures broad device compatibility while minimizing cloud storage burden.
Data Source
AI summary
Disclosed are methods and systems for providing cloud services to personal computing devices that store large personal files such as personal videos and personal photographs in a lossless format. The methods and systems include a cloud server that synchronizes large personal files in a lossless format between first and second local computing devices. The cloud server may also store the personal large files in a lossy format on the cloud server. The lossy file can be used to facilitate syncing of the lossless file between a first and second local computing device. The lossy file stored on the cloud can also be provided to a third local computing device having limited capabilities (e.g., a mobile device with a limited internet connection or limited screen resolution).


