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Faced with drawbacks of JPEG 2000 lossless coding in network application as far as manipulation flexibility is concerned, this paper proposes a differential approach of implementation. By combining JPEG 2000 lossy coding with LZMA compression, we come to a novel pattern which is more flexible and convenient while maintaining high compression ratio comparable to JPEG 2000 lossless coding. We evaluate the performance of our implementation in line with experimental results regarding compression ratio and analyze the prospective fields this differential implementation may well apply. An outlook of future work is also included.