KR20160112572A - The small digital cinema projection system - Google Patents

Abstract

The present invention relates to a small-sized digital cinema projection system, which can implement a cinema projection technology for a movie theater by using a low-cost projection system, thereby enabling various types of cinema content to be distributed and shown at low costs even in regions isolated from enjoyment of culture. The small-sized digital cinema projection system comprises: a content playback device which plays back a digital cinema package (DCP), i.e., digital cinema content including a key delivery message (KDM), i.e., an encryption key standard for transfer of decryption information, and an XML subtitle file, and directly transmits the DCP to a small-sized projection device; a digital cinema content processing device which inspects digital cinema content, provided by a movie content provider, for image and sound quality, generates a DCP by packaging a digital cinema distributor master (DCDM), i.e., a final digital cinema content file having been inspected, a KDM, i.e., an encryption key standard, and an XML subtitle file, and distributes the DCP to the small-sized projection device over a virtual private network (VPN); and the small-sized projection device which displays the digital cinema content by projecting the digital cinema content, transmitted by the digital cinema processing device or the content playback device, onto a screen.

Description

[0002] The small digital cinema projection system

The present invention relates to a small-scale digital cinema screening system, and more particularly, to a movie screening technology for a theater as a low-cost screening system, so that a variety of movie contents can be distributed / A small digital cinema screening system.

Due to the development of multimedia technology and wired / wireless communication technology, technology for spreading image contents to users is developing. In particular, there is an increasing trend toward research on technologies for users to directly access and use contents displayed in movie theaters.

Unlike conventional film distributions, there is an increasing tendency to distribute and present digital cinema content in theaters. Digital cinema content refers to content that processes a movie taken by a film or digital camera into digital files and distributes it through wired / wireless communication or distributes it through a storage medium to provide a high-quality digital image service to the viewer.

Background Art [0002] A conventional technology for a system for providing digital cinema contents through a communication technology is disclosed in Patent Document 1 below.

The prior art disclosed in Patent Document 1 provides a plurality of movie / video contents provided from a movie / video producer or a content provider in a main server to a plurality of movie theater servers to which a merchant agreement is set, According to the selection, the movie / video contents are outputted to the display device by the auditorium server so that the user can view the movie / video contents. When the user watches the movie / video contents, the viewing / A server operator, and an auditorium by paying a fee from the user by calculating the cost according to the size of the movie / video material, and distributing the revenue to the movie / video producer or the content provider, the server operator, Title, movie / movie type, viewing time At the same time as receiving the data performs statistical processing and stores the resulting data receives a revenue share of the cost that you are paying.

Patent Document 1 of this type allows users to view movies / video images that they want to watch without having to search for a movie theater or videotape at a low cost and freely, and to create a digital distribution network, Implement distribution / distribution.

Korean Patent Laid-Open Publication No. 2001-0107173 (published Dec. 2001, 2001)

However, since the general digital cinema system and the conventional technology as described above use high quality and expensive digital cinema equipment and a screening system, it is difficult to easily apply the system to a cultural exclusion area.

Here, the term "cultural marginalized marginalized area" refers to a region with poor cultural facilities due to geographical discomfort such as farming and fishing villages, islands, mountainous wallpaper and industrial complexes.

It is an object of the present invention to provide a digital cinema screening system and a digital still image display system for a movie theater, And to provide a small digital cinema screening system capable of distributing / screening movie contents.

Another object of the present invention is to provide a small-scale digital cinema screening system that provides a variety of image contents including movies at low cost in real time, and enables the opportunity to enjoy a culture through various cultural contents in a culture-underserved area.

In order to achieve the above object, a small-scale digital cinema screening system according to the present invention includes a key delivery message (KDM) for transmitting decryption information and a digital cinema content (DCP (Digital Cinema Package) and directly transmits the content to a small-scale screening system; (Digital Cinema Distributor Master), which is the final cinema contents file, and KDM, which is the encryption key standard, and the caption file (XML), are packaged in the digital cinema package A digital cinema content processing apparatus for generating a digital cinema content (DCP) and distributing it to the small screening system through a virtual private network (VPN); And a small screening system for displaying the digital cinema content by projecting the digital cinema content transmitted from the digital cinema processing apparatus or the content reproduction apparatus onto a screen.

The digital cinema content processing apparatus includes a Digital Cinema Distributor Master (DCDM), a final cinema content file, and a KDM and a caption file (XML) A cinema content operation server for generating a package (DCP), distributing the package (DCP) to a small screening system through a virtual private network (VPN), and remotely managing movie content screening status in the small use system; A database for storing the digital cinema content supplied from the movie content provider and the digital cinema package; And a transmission server (FTP server) for distributing the digital cinema package to a small screening system remotely located via a virtual private network.

Wherein the cinema content operation server comprises: a digital cinema content receiving module for receiving the digital cinema content supplied from the movie content provider; A cinema content storage module for storing the digital cinema content received by the digital cinema content receiving module; A digital cinema packaging module for packaging a Digital Cinema Distributer Master (DCDM), a KDM (Standard Encryption Key), and a subtitle file (XML), to generate a digital cinema package (DCP); A KDM generation module for generating a KDM which is an encryption key standard for reproducing the packaged digital cinema package; And a digital cinema content distribution module for transmitting the digital cinema package and the KDM to a remote small screening system.

The cinema content management server includes a content management module for managing the received digital cinema content, and managing digital cinema content transmitted to each of the small screening systems; And a remote monitoring module for monitoring a schedule of content screening and a screening status of the small screening system.

The small screening system includes a playback server for receiving and playing back digital cinema content received through the virtual private network and displaying the reproduced digital cinema content on a screen.

Wherein the playback server comprises: a digital cinema content receiving module for receiving a digital cinema package (DCP), which is digital cinema content, through the virtual private network; A KDM receiving module for receiving a KDM for reproducing the digital cinema package through the virtual private network; And a playback module for playing back the digital cinema package based on the KDM and displaying the digital cinema package on the screen.

The playback server checks whether the playback of the digital cinema package is completed in cooperation with the playback module, and deletes the played back digital cinema package by the KDM when the playback of the digital cinema package is completed And further comprising:

According to the present invention, localization of movie screening equipment for a theater, which is an expensive digital cinema content screening apparatus, is provided to provide a low-priced screening system, thereby providing a simple and convenient way to screen various movie contents at low cost.

In addition, according to the present invention, digital cinema contents are provided through a network, thereby enabling continuous service such as cost, time, and distribution.

1 is a schematic configuration diagram of a small-scale digital cinema screening system according to a preferred embodiment of the present invention,
Fig. 2 is a construction diagram of the small-scale digital cinema screening system of Fig. 1,
FIG. 3 is a block diagram of an embodiment of the cinema content operation server of FIG. 2;
FIG. 4 is a block diagram of an embodiment of the reproduction server of FIG. 2;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a small-scale digital cinema screening system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a small-scale digital cinema screening system according to a preferred embodiment of the present invention. The content playback apparatus 100, the digital cinema content processing apparatus 300, the virtual private network 400, .

In FIG. 1, reference numeral 200 denotes a movie content provider that provides movie content, and may be a Korean movie resource, a local government cultural industry promotion agency, a Korea Contents Agency, or the like.

The Korea Film Archive provides social contribution activities for distributors and the latest release films. Therefore, it is possible to proceed with the contents supply business which is extended to the supply business to the marginalized area of the specific region as the subject of the content provision of the Korean Film Archive.

The content reproduction apparatus 100 reproduces a digital cinema package (DCP), which is a digital cinema content including a KDM (Key Delivery Message) and a subtitle file (XML), which are cryptographic key standards for transmitting decryption information, To the system (500). This content reproduction apparatus 100 performs reproduction of the movie DCP (2K DCP) and MPEG-2 HD reproduction.

The digital cinema content processing apparatus 300 functions to relay digital cinema content between a movie content provider and a small screening system. The digital cinema content processing apparatus 300 inspects the image quality and sound quality of the digital cinema content supplied from the movie content provider 200 , The digital cinema package (DCP) is created by packaging the digital cinema distributor master (DCDM), the encryption key standard KDM, and the caption file (XML) (400) to the small screening system (500).

2, the digital cinema content processing apparatus 300 includes a digital cinema distributor master (DCDM), which is a final cinema content file in which the digital cinema content supplied from the movie content provider 200 is completed, KDM and a caption file (XML) to create a digital cinema package (DCP) and distribute it to a small screening system 500 through a virtual private network (VPN) A cinema content operation server 310 for remotely managing the movie content screening status in the mobile terminal 500; A database 320 for storing the digital cinema content and the digital cinema package (DCP) supplied from the movie content provider 200; A transmission server (FTP server) 340 distributing the digital cinema package to a remotely located small screening system 500 through a virtual private network 400; And a live transmission server 330.

As shown in FIG. 3, the cinema content management server 310 includes a digital cinema content receiving module 311 for receiving digital cinema content supplied from the movie content provider 200; A cinema content storage module 312 for storing the digital cinema content received by the digital cinema content receiving module 311; A digital cinema packaging module 313 for packaging a digital cinema distributor master (DCDM), a final cinema content file, and an encryption key standard KDM and a caption file (XML) to generate a digital cinema package (DCP); A KDM generation module 314 for generating a KDM which is an encryption key standard for reproducing the packaged digital cinema package; And a digital cinema content distribution module 315 for sending the digital cinema package and the KDM to a remote small screening system 500.

In addition, the cinema content management server 310 includes a content management module 316 for managing the received digital cinema content, and managing digital cinema content to be transmitted to each small screening system; And a remote monitoring module 317 for monitoring the schedule of the content screening and the screening status of the small screening system 500.

The small screening system 500 includes a playback server 510 that receives and plays the digital cinema content received through the virtual private network 400 and displays the reproduced digital cinema content on the screen 520.

Here, the small-scale screening system 500 may include a local management server (LMS) installed in the cultural enjoyment alienated area to manage the playback server 510. For example, a local management server may be provided for each cultural enjoyment-free area, and a playback server may be provided under the local management server to reproduce the digital cinema content.

4, the playback server 510 includes a digital cinema content receiving module 511 for receiving a digital cinema package (DCP), which is digital cinema content, through the virtual private network 400; A KDM receiving module (512) for receiving a KDM for reproducing the digital cinema package via the virtual private network (400); A playback module (513) for reproducing the digital cinema package based on the KDM and displaying the digital cinema package on the screen; A playback file deletion module 514 for checking whether playback of the digital cinema package is completed in cooperation with the playback module 513 and deleting the played back digital cinema package by the KDM upon completion of playback of the digital cinema package, .

The operation of the small-scale digital cinema screening system according to the present invention will be described in detail as follows.

First, the present invention provides a low-cost small-scale screening system in a cultural enjoyment-underdeveloped area and a cultural enjoyment-less subdivision, transmits digital cinema contents from the remote site to the small screening system, and displays the digital cinema content in a real- .

Here, the cultural marginalized marginalized group can be divided into geographically marginalized, social marginalized, and economically marginalized marginal. The geographically marginalized marginalized group refers to the residents living in marginalized areas, , Social workers, multicultural families, settlers, foreign workers, etc. The economic underprivileged group refers to basic livelihood recipients, statutory surrogate households, and residents of rental housing.

The digital cinema contents can be transmitted to the small screening system 500 in two ways while the small screening system 500 is installed in the culture enjoyment marginalized area.

For example, a digital cinema package (DCP), which is a digital cinema content including a KDM (Key Delivery Message) and a caption file (XML), which is a cryptographic key standard for securing movie contents in the content reproduction apparatus 100, And transmitting the digital cinema content directly to the small screening system 500 is the first method.

As a second method, a digital cinema content processing apparatus 300 relays digital cinema content between a movie content provider 200 (for example, a Korean movie source) and a small screening system 500. For this purpose, the operator of the digital cinema content processing apparatus 300 preferably makes a distribution agreement (MOU) with the Korean video resource and the image contents. Here, video content is non-commercial content.

The cinema content management server 310 in the digital cinema content processing apparatus 300 checks the image quality and sound quality of the digital cinema content supplied from the movie content provider 200 and transmits the final cinema content file DCDM (DCP) by packaging the encryption key KDM and the subtitle file (XML), and distributing it to the small screening system 500 through a virtual private network (VPN) do.

That is, the cinema content operation server 310 of the digital cinema content processing apparatus 300 receives the digital cinema content master 200, which is a final cinema content file in which the digital cinema content supplied from the movie content provider 200 is completed, A key standard KDM and a caption file (XML) are packaged to generate a digital cinema package (DCP) and distributed to a small screening system 500 through a virtual private network (VPN) Remotely manages the movie content screening status in the system 500.

For example, the digital cinema content receiving module 311 of the cinema content operation server 310 receives the digital cinema content supplied from the movie content provider 200. The cinema content storage module 312 stores the digital cinema content received by the digital cinema content receiving module 311 in the database 320. [

Then, the digital cinema content stored in the database 320 is checked. Inspection is the final encoding of video and audio master contents in the post production screening room. Inspection method is to check the image quality and sound quality in the presence of cinematographers and directors.

Next, the KDM generation module 314 encrypts the digital cinema content, generates KDM, which is a cryptographic key standard for automatically deleting the file whose playback has been completed, and transmits the generated KDM to the digital cinema packaging module 313.

Digital movie contents are usually transmitted in the form of encrypted contents in order to prevent illegal outflow of related persons during distribution process or screening from distributor to auditorium. The KDM includes information on digital cinema package (DCP) that is permitted to use, identifier information on a screening device to be permitted to use, conditions for which use is permitted, and key information for decrypting the encrypted movie content.

The digital cinema packaging module 313 creates a digital cinema package (DCP) by packaging a digital cinema distributor master (DCDM), a final cinema content file, and a KDM and a caption file (XML).

The generated digital cinema package is stored in the database through the cinema content storage module 312, managed by the content management module 316, and transmitted to the transmission server 340 through the digital cinema content distribution module 315 .

The transmission server 340 distributes the digital cinema package to the remote small screening system 500 via the virtual private network 400. [

Meanwhile, the content management module 316 manages the received digital cinema content, and manages digital cinema content transmitted to each small-scale screening system.

After transmitting the digital cinema package, which is digital cinema content, to the small screening system 500, the remote monitoring module 317 continuously monitors the content screening schedule and the screening status of the small screening system 500. That is, it monitors the lighting and screen state of the screening system in real time. If an abnormality occurs in the monitoring result screening system, a message about the movement state is automatically generated and transmitted to the terminal of the registered administrator so that the administrator can recognize in real time where the abnormality occurs in the screening system located in the real time do.

The digital cinema package transmitted through the transmission server 340 is transmitted to the small screening system 500 through the virtual private network 400. At this time, the standard of the digital cinema content uses DCI (Digital Cinema Initiative) have.

DCI, the standard for digital cinema content, uses Link Encryption technology to encrypt data. Link Encryption technology is an AES-based encryption / decryption module that encrypts data to prevent image duplication in digital cinema system and projector link (BNC cable, etc.). Here, the Advanced Encryption Standard (AES) is a cryptographic scheme established by the National Institute of Standards and Technology (NIST) in 2001, which is a symmetric key algorithm that uses the same key during encryption and decryption.

Preferably, the small screening system 500 is installed in a cultural enjoyment-free area, and a local management server (LMS) for managing a plurality of playback servers 510 is provided for each local area. For example, a local management server is provided for each culture-enjoying marginalized area, and a playback server is provided under the local management server to reproduce the digital cinema content.

The playback server 510 receives a digital cinema package (DCP), which is digital cinema content, through the virtual private network 400 in the digital cinema content receiving module 511. The KDM receiving module 511 extracts KDM, which is an encryption key standard for reproduction, in the digital cinema package received by the digital cinema content receiving module 511. [ The extracted KDM is delivered to the playback module 513, and the playback module 513 plays the digital cinema package based on the KDM and displays it on the screen 520.

As a result, it is possible to enjoy digital cinema contents at low cost even in a culture-free area. In particular, if the reproduction server 510 is installed in a marginalized area but the marginalized area is expanded to the towns, villages, and cities, digital cinema contents can be displayed in areas where service, time, You can enjoy it at low cost.

In particular, residents, disabled people, and the elderly living in disadvantaged areas have limited access to the theater located in the center of the city center (there is no commercial theater below the military level), and in order to maximize the effectiveness of the cultural welfare policy, There is a need for a space in which the Government's support policy can be continuously shared. In addition, youths and residents in rural areas, in the rural areas and in the remote areas have a high interest and preference for movie services, and operate policy services such as 'visiting movie theaters' and 'issuing cultural vouchers'. However, There was a difficulty in the service, and a radical alternative was needed. In addition, fundamental cultural support policies are necessary for the cultural underprivileged, including multicultural families with social barriers, migrant youth and foreign workers.

In the present invention, digital cinema equipment and a screening system are mostly not available in towns and villages, which are real cultural enjoyment marginal areas. Only a home theater, which is a low-priced screening system, is installed in such a town or a village office, a town hall or a school, It is possible to display digital cinema contents in a way.

Meanwhile, the reproduction file deletion module 514 confirms whether or not the digital cinema package is completely reproduced in association with the reproduction module 513, and when the reproduction of the digital cinema package is completed by the KDM, Is automatically deleted. Automatic deletion of such a digital cinema package is for content protection.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The present invention is based on the idea of expanding opportunities for enjoyment of culture by utilizing municipalities (small towns, towns, and villages in areas without a theater), military It applies to technologies that show digital cinema contents at low cost in a small space in a marginalized area.

100: Content playback device
200: Movie content provider
300: digital cinema content processing device
311: Digital Cinema Content Receiving Module
312: Cinema content storage module
313: Digital Cinema Packaging Module
314: KDM generation module
315: Digital Cinema Content Distribution Module
316: Content Management Module
317: Remote monitoring module
400: Virtual Private Network (VPN)
500: Small screening system
511: Digital Cinema Content Receiving Module
512: KDM receiving module
513: Playback module
514: Playback file deletion module

Claims (8)

A content playback apparatus for playing back a digital cinema package (DCP), which is a digital cinema content including a KDM (Key Delivery Message) and a caption file (XML), which is an encryption key standard for transferring decryption information, and directly transmitting the decrypted content to a small screening system;
(Digital Cinema Distributor Master), which is the final cinema contents file, and KDM, which is the encryption key standard, and the subtitle file (XML), are packaged in the digital cinema package A digital cinema content processing apparatus for generating a digital cinema content (DCP) and distributing it to the small screening system through a virtual private network (VPN);
And a small screening system for displaying the digital cinema content by projecting the digital cinema content transmitted from the digital cinema processing apparatus or the content reproduction apparatus to a screen.
The digital cinema content processing apparatus according to claim 1, wherein the digital cinema content processing apparatus includes a digital cinema distributor master (DCDM), a final cinema content file, and a KDM and a caption file (XML) A digital cinema package (DCP) is created and distributed to a small screening system through a virtual private network (VPN), and a cinema content operation server ; A database for storing the digital cinema content supplied from the movie content provider and the digital cinema package; And a transmission server (FTP server) for distributing the digital cinema package to a small screening system located remotely via a virtual private network.
The system according to claim 2, wherein the cinema content operation server comprises: a digital cinema content receiving module for receiving digital cinema content supplied from the movie content provider; A cinema content storage module for storing the digital cinema content received by the digital cinema content receiving module; A digital cinema packaging module for packaging a Digital Cinema Distributer Master (DCDM), a KDM (Standard Encryption Key), and a subtitle file (XML), to generate a digital cinema package (DCP); A KDM generation module for generating a KDM which is an encryption key standard for reproducing the packaged digital cinema package; And a digital cinema content distribution module for transmitting the digital cinema package and the KDM to a remote small screening system.
The system according to claim 3, wherein the cinema content operation server comprises: a content management module for managing the received digital cinema content, and managing digital cinema content transmitted to each small screening system; Further comprising a remote monitoring module for monitoring a schedule and a screening status of the contents of the small screening system.
The digital cinema display system according to claim 1, wherein the small screening system includes a playback server for receiving and playing back the digital cinema content received through the virtual private network and displaying the reproduced digital cinema content on a screen. .
The system of claim 5, wherein the playback server comprises: a digital cinema content receiving module for receiving a digital cinema package (DCP), which is digital cinema content, via the virtual private network; A KDM receiving module for receiving a KDM for reproducing the digital cinema package through the virtual private network; And a playback module for playing back the digital cinema package based on the KDM and displaying the digital cinema package on the screen.
7. The digital cinema package as claimed in claim 6, wherein the playback server confirms whether or not playback of the digital cinema package is completed in cooperation with the playback module, and when playback of the digital cinema package is completed, And a file deletion module.
The small-scale digital cinema screening system according to claim 5, wherein the small-scale screening system further comprises a regional management server which is provided for each cultural enjoyment marginalized area and transmits the digital cinema package to the playback server.

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