12/12/2023 0 Comments Acdsee photo editor 6 license key![]() The patent describes a DCT-based image compression algorithm, and would later be a cause of controversy in 2002 (see Patent controversy below). Patent 4,698,672, filed by Compression Labs' Wen-Hsiung Chen and Daniel J. Other companies cited as patent holders include AT&T (two patents) and Canon Inc. The JPEG specification also cites three other patents from IBM.
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