METHOD AND APPARATUS FOR IMPRINTING ID INFORMATION INTO DIGITAL CONTENT AND FOR READING OUT THE SAME

摘要

PURPOSE: A method for imprinting identification information(ID) into a digital content and for reading the information is provided for preventing illegal reproduction or modification and protecting CONSTITUTION: After a digital content is loaded into an information terminal such as a PC, ID information unique to a viewer or a user of the PC is imprinted into the content. The ID information is imprinted into a predetermined location of the content or alternatively, it may be imprinted over the entire content in the form of a spatial frequency. The content with an ID added thereto is then enabled to be used in the terminal.