This is part 4 of 14 of the 2D Roguelike tutorial in which we write the BoardManager script which will procedurally or semirandomly generate our levels.
It relates in particular to a system for controlling a special reproduction a trick play such as time skip and fast-forward for a specific part of the digital contents in the terminal apparatus according to an intention of a provider.
Background Art In recent years, a content distribution service which is capable of distributing digital contents such as music, video and game hereafter referred to as content from a server apparatus to a terminal apparatus through communication such as Internet, digital broadcast, Cable Television CATVand of using the content in a terminal apparatus has developed for a practical use.
A common system used for the content distribution uses a copyright protection technique for protecting a copyright of content in order to prevent an illegal use of the content by a malicious user. The copyright protection technique is, in specific, a technique of securely controlling use of content by a user such as reproducing the content or copying it to a recording media using encoding technique, identification technique and the like.
Using the copyright protection technique allows a provider such as a content provider and a service provider to securely control the use of content in the terminal apparatus by a user. By the way, a usage pattern with high usability by the user in a terminal apparatus having a large storage unit such as a Hard Disk Drive HDD has examined.
The high usability includes temporally storing a distributed content to the terminal apparatus and viewing a content which the user wants to see at whenever the user wishes to. At an Association of Radio Industries and Businesses ARIB that is an organization of standardizing digital broadcast in Japan, a server-type broadcasting method is standardized as a digital broadcasting method using a large capacity storage function.
However, in the terminal apparatus having such storage function, a situation that users do not watch a commercial message CM is caused by temporally storing a content including the CM into the terminal apparatus, skipping, fast forwarding and rewinding a CM part while watching by a time shift.
Consequently, it is likely to cause demerits that a CM effect is weakened for the provider and the CM cost is lowered. As a technique resolving writing a play script format ks20 problem, for example, a patent literature: Accordingly, in the conventional content reproduction control system, it can prevent the use of content by a user contrary to the intention of the provider by embedding control information indicating that a special reproduction is prohibited in an area such as the CM part of the content and the like where the content provider wants to prohibit the use of the special reproduction.
However, the conventional content reproduction control system prevents a special reproduction of the CM part so that control information for controlling a CM viewing needs to be embedded into the content. In general, it is common that an encoder that digitally encodes the content does not have a function of identifying the CM part of the content or even a function of inserting information for the CM viewing control.
Therefore, it is necessary to have a specialized encoder to generate a content which can control the CM viewing. Consequently, it causes an increase of costs on the provider. Resolving these conventional problems, the present invention aims to provide a content reproduction control system capable of preventing the content use by the user contrary to the intention of the provider at low cost by securely realizing the use control of a specific part of the content such as CM part in the terminal apparatus without inserting control information to the content.
Disclosure of Invention In order to achieve the above-mentioned objective, the content reproduction control system according to the present invention comprises a server apparatus and a terminal apparatus that are connected to each other via a communication path, wherein the server apparatus includes: The present configuration makes it possible to securely control a specific portion of the content without embedding special information into the content for the use control.
According to the present invention, the CM viewing by a user can be securely controlled using secure time information pre-existed in the content without embedding the control information for controlling the CM viewing in the content body.
Therefore, the present invention can apply content generated using a general encoder and can reduce cost burdens on a provider.
Furthermore, securely binding the content such as when the preexisted time information is encrypted in the content, the CM viewing by the user can be securely controlled using the time information. Note that the present invention can be realized not only as a content reproduction control system but also as a server apparatus and a terminal apparatus that configures the content reproduction control system, a content reproduction control method having characteristic steps included in the server apparatus and the terminal apparatus, as well as a program that causes a computer to execute such steps.
Here, it is needless to say that such program can be distributed via recording medium such as CD-ROM or via a transmission medium such as Internet. As further information about technical background to this application, the disclosure of Japanese Patent Application No. Brief Description of Drawings These and other objects, advantages and features of the invention will become apparent from the following description thereof taken in conjunction with the accompanying drawings that illustrate a specific embodiment of the invention.
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Best Mode for Carrying Out the Invention Hereafter, it explains about the content reproduction control system according to an embodiment of the present invention with references to figures. The content reproduction control system 1 is a system that securely controls a reproduction when a user uses in a terminal apparatus an encrypted content to be distributed from a distribution center that is, a service provider via a network and the like.
As shown in FIG. The distribution center includes a right management server a that manages the right usage rules of using the content held by the user; generates a license of the content; and distributes the license to the terminal apparatuses a to c, a distribution server b that distributes the content to the terminal apparatuses a to c, a billing server c that charges the user, a web server lOld that transmits a web screen for providing each service to the terminal apparatuses a to c through the networkand a LAN lOln mutually connecting those.
The right management server a is a server apparatus that manages the usage rules of the content held by the user and attaches a license for decrypting the content encrypted by the user.
In specific, the right management server a manages the usage rules of the contents held by each user or each terminal apparatuses a to c, and distributes, in response to a request from a user, a license to the terminal apparatuses a to c through the network Also, when a push-type content is distributed through the digital broadcast and a broadband Internet, a license may be distributed together with the content so that a generated license is transmitted to the content distribution server b.
Here, the license is made of an encryption key for decrypting the encrypted content, and usage rules such as restriction on the content use, the number of use and the like.
An example of a data structure of the license is explained later in detail using figures. Further, when data such as license to be secured is sent and received among the distribution center and the terminal apparatuses a to c via the networka Secure Authenticated Channel hereafter also referred to as "SAC" such as a Secure Socket Layer SSL and a Transport Layer Security TLS is set and data is sent and received.
The content distribution server b is a server apparatus that distributes the content to the terminal apparatuses a to c through the networkthe server being realized by a specific hardware, a work station or the like.
In particular, in a server-type broadcasting method in a digital satellite broadcasting and a terrestrial broadcasting, a method of distributing a stream-type content which can be commonly used for a real time viewing and a stored viewing is standardized and called as server-type broadcasting method type I, the stream type content multiplexing the contents of MPEG-2 and MPEG-4 Elementary Stream, hereafter referred to as ES by a Packetized Elementary Stream PES and a Transport Stream TS.
Here, it is briefly explained about an encryption key scheme in a content distribution based on the server-type broadcasting method type I.
Here, a sending side of distributing the content and the encryption key and receiving side of receiving the content and the encryption key are separately explained.
Firstly, on the sending side, the content is encrypted with an encryption key called a scramble key Ks, that is, scrambled, and sent to the receiving side. Also, the scramble key Ks is a time variant key which is changed for every few minutes in order to improve security against an illegal reception.
In addition, the scramble key Ks for scrambling the content is encrypted with a work key Kw and sent to the receiving side.Writing an action story ks20; Social relationships; A review of the characters in cosi a semi autobiographical play by louis nowra; Oral dissertation defense; Writing a short animation script format; Review sheet for wuthering heights; Child labour in india effects on education;.
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Battleship Game Ks20 Rogue Get Now. This is part 4 of 14 of the 2D Roguelike tutorial in which we write the BoardManager script which will procedurally or semirandomly generate our levels.
Strongest 40K Battleship an Executor SSD can defeat. A content reproduction control system (1) comprising a server apparatus (b) and a terminal apparatus () that are connected via a communication path (), wherein the server apparatus includes: based on time information attached to a content, a control information generation unit () operable to generate control information () for specifying a range for permitting or prohibiting a.
script format. JOE But why is the room empty? April and Joe look out across the room - rows of empty chairs and nary a person in sight.
APRIL Okay, okay. Don’t panic. to satisfy the people writing your checks. Joe balances on one leg atop the podium. JOE But when you’re like me, you should stick to format. Is that what you’re trying.