Copyright protecting method and device for publishing digital film and television by reproducible storage equipment

Abstract

The invention discloses a copyright protecting method and device for publishing digital film and television by reproducible storage equipment, which relate to the field of multimedia. A management device provided by the invention comprises an authorizing management system, a concentrating storage system, a publisher system and playing equipment. A digital copyright protecting safety system for publishing digital film and television by reproducible storage equipment is established by adopting a double-key pair asymmetric encryption technology, the authorizing management on the authorizing and concentrating storage systems, the publisher system and the playing equipment of the publisher is realized, the consumption demands of high-definition content publishing and education video publishing with great potential in China are met in an environmental-friendly copy publishing way, and the invention has the characteristics of energy saving, safety, reliability, rapid popularization, simplicity and convenience for maintenance and low operating cost.

Description

technical field [0001] The invention relates to the field of multimedia, in particular to a digital copyright protection method and a management device for distributing digital video content in a copy form through a rewritable storage device. Background technique [0002] With the rapid development of digitization and storage technology, the distribution of film and television content has gone through the DVD era and entered the high-definition era represented by Blu-ray (BD) and HD DYD. As the prices of rewritable storage devices (mobile hard drives, SD cards, U disks, solid state drives) continue to drop, USB3. It replaces the traditional CD-ROM distribution method, and at the same time, using rewritable storage devices to release film and television content is more in line with the industrial goals of energy conservation and environmental protection than CD distribution. However, as the user base of high-definition film and television content and educational video conten...

AI Technical Summary

Problems solved by technology

[0012] ①In terms of information security, the technology adopted by AACS is completely controlled by foreign manufacturers, and it is not in line with my country's national information security policy to directly apply it to my country as a security technology;

[0013] ② Expenses: The patents and systems involved in AACS technology are completely in the hands of foreigners, and the authorized use in my country requires expensive patent fees and management fees;

[0014] ③Management limitation issue: AACS technology does not involve the authorized management of replicator systems

[0016] ①Propagation medium problem: The distribution system with CD as the medium has not been broken away. The decryption key of the program content is obtained through the binding process of the CD-ROM copy protection mark and the program key, so the whole system cannot get rid of the distribution system with CD as the medium The CD-based distribution system itself has many problems: the storage space is limited, it is easy to cause a lot of plastic waste, and the service life of the CD-ROM is also related to the number of reads and writes of the laser head.

[0017] ②Mass production problem: Mass production cannot be realized, and discs are issued strictly in accordance with the authorization to playback devices, so that the advantages of mass copying and reducing production costs of discs have become a thing of the past. Only one unique disc can be produced for one customer and one film It also makes it difficult for publishers to maintain normal operations and limits the promotion of patent CN 101770794 A

[0018] ③Management loopholes: Although CN 101770794 A has made some improvements to the copier management, the film and television content is not encrypted when it enters the copier system and is stored in the copier system, and there is a security loophole for the copier to copy non-encrypted video content

And in real life, the functions of publishers and distributors are different, only for the management of replicators to create management loopholes

[0019] ④The restrictive problem of the system: the system key data packet described in CN 101770794 A contains the corresponding relationship between all replicator keys and replicator IDs, and the data packet is built into the playback device, but in reality due to actual operation The mode is constantly growing and developing, and the replicators are constantly being updated and eliminated. Therefore, it will result in the phenomenon that the built-in system data package of the playback terminal needs to be continuously upgraded to meet the daily viewing needs of consumers. This is called the restrictive problem of the system. The convenience of use, and the operation and promotion of this method in real society

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