3 accepting and handling patent commission services unauthorizedly or beyond the approved business scope; and 五未经软件著作权人许可,修改翻译其软件的
Digital watermarking is a technique which can protect the copyright of multimedia data and prevent digital material from being tampered and distributed unauthorizedly etc . digital watermarking can be traced back as far as 1990 数字水印是保护数字作品版权,防止数字作品篡改和非法传播等的一门技术。