Method of abolishing unauthorized copying of digital data stored on an optical disc

A method of abolishing unauthorized copying of digital data stored on an optical disc, comprising the steps of distributing a plurality of overwrite modules of a copy protection module into a data file that is to be protected against illegal copying, so as to form a copy-protected data file;

• and writing the copy-protected data file into a non-rewriteable optical storage media;
• wherein the overwrite modules of the copy protection module distributed into the data file are respectively arranged between any two adjacent data blocks of the data file, such that each data block and a following overwrite module together form a group and the copy-protected data file so formed includes a plurality of sequentially arranged first, second, third and more groups of data block and overwrite module;
• and
• wherein, when a user requests a readout device to read out the copy-protected data file stored on the optical storage media, the readout device first reads the data block of the copy-protected data file in the first group into a specified register in the readout device for decoding, and then reads the overwrite module in the first group, which requests the readout device to read the data block in the second group into the same specified register to thereby cover the first data block having been read into the specified register;
• and the readout device repeatedly reads out subsequent data blocks into the specified register one by one while covering preceding data blocks temporarily held in the specified register, so that no data of the copy-protected data file is stored in the specified register of the readout device.