| 1. | The rapid growth of the information technology , the development of e - commerce , the increasingly easy access to digital media , and the increasingly powerful digital media manipulation tools have made media security a very important issue
当前快速发展的新的it技术、电了商务及大量商用多媒体业务的涌现，使得各种多媒体数据的版权保护技术显得尤为重要。 |
