| 单词 | gif patents |
| 释义 | GIF patentsGIF patentsThe GIF format uses the LZW compression algorithm, which was patented by Unisys, and publishers of applications that read and write GIF87a and GIF89a images were required to obtain a license and pay royalties to the company. For example, publishers of Web browsers and image editors were licensees. The Unisys patents expired in June 2003 for the U.S. and in July 2004 for Canada and Europe; however, Unisys and other companies have patents on different variants of LZW used in other GIF formats. See LZW and GIF. |
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英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。