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This patent is quite interesting. I've briefly review the main parts of the article. However, I'd like to know what problems this patent had sovled and How it did. Would anybody could give me a more sepicfic or detail summary for that because this article seems just writen in a vague way.

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Welcome to Ask Patents. You may have reached the site from a google patent's "discuss this patent" link but the number of the document you were looking at was not put into the question. Your question may or may not be considered on-topic here but to help at all please edit your question to include the patent document number. –  George White Jan 13 at 6:50
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