Electronic Device Data Reproduction with Partial Decryption
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Solution Overview
Problem
Current digital rights management (DRM) systems using lossless compression schemes for multimedia content result in low compression efficiency, leading to large file sizes and increased overhead for decryption and decompression, which can degrade device performance and prevent multimedia content from being viewed if decryption fails.
Innovation Solution
An electronic device with a communication module, audio module, and processor that receives and decompresses data using a predetermined compression scheme, decrypts the data, and reproduces it, even if decryption is partially successful, allowing for the reproduction of multimedia content with varying qualities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If lossless compression scheme is used to compress multimedia content, then compression efficiency is improved, but file size and decryption overhead increase
Solution Approach 1:
The patent segments multimedia content into multiple units, where each unit contains a header and payload. The header includes compression information that enables independent decompression of each unit without requiring decryption of the entire content. This segmentation allows partial decompression and playback even when decryption fails for certain units.
Solution Approach 2:
The patent implements partial decompression by allowing the electronic device to decompress only the header and necessary portions of the payload without fully decrypting the entire multimedia content. This partial action reduces processing overhead while maintaining the ability to reproduce content with acceptable quality.
2Reliability
If all multimedia content is decrypted before decompression, then content protection is ensured, but device performance deteriorates due to overhead
Solution Approach 1:
The patent performs preliminary decompression of the header portion before decryption. The header contains essential compression information that can be processed without full decryption, allowing the device to prepare decompression parameters in advance and reduce the computational burden during actual playback.
Solution Approach 2:
The patent implements partial decryption by only decrypting the portions of multimedia content that are immediately needed for playback, rather than decrypting the entire content beforehand. This partial action significantly reduces the overhead and improves device performance while maintaining adequate content protection.
3Manufacturing precision
If lossless compression is applied to multimedia content, then content quality is maintained, but decryption overhead increases and may cause playback failure
Solution Approach 1:
The patent divides multimedia content into segmented units with independent headers containing compression parameters. This segmentation allows the device to decompress headers quickly without waiting for full decryption, reducing playback delay while maintaining lossless quality for the portions that are successfully decrypted.
Solution Approach 2:
The patent allows partial decompression and playback of multimedia content without requiring complete decryption. By decompressing available portions immediately and continuing playback, the system reduces the perceived decryption overhead and prevents total playback failure even when some decryption operations are delayed or fail.
Data Source
AI summary
An electronic device and an operation method thereof, according to various embodiments, may: receive first data and second data compressed in a designated compression scheme; decompress the received first data and the received second data on the basis of at least the designated compression scheme; decrypt the decompressed second data; detect success of the decryption; and reproduce the decompressed first data and the decrypted second data.