JP2012244444A - Contents receiver and contents reception method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a contents receiver to present contents to a user in consideration of the difference between a planar video and a stereoscopic video when planar video contents and stereoscopic video contents are mixedly supplied.SOLUTION: A contents receiver comprises: a downloader which receives video contents and metadata described to associate the video contents with attribute information of the video contents via a network and stores the metadata in a recording medium; a user operation unit which accepts input of an item used to search for stereoscopic video contents; a metadata processing unit which analyzes the metadata stored in the recording medium to acquire stereoscopic video contents information related to the stereoscopic video contents and identifies video contents having attributes corresponding to the input item on the basis of the acquired stereoscopic video contents; and means for displaying a list of the identified video contents.

Description

  The present invention relates to a receiver that receives content distributed from a distribution system via a network, a reception method thereof, and a content distribution method in a content transmission / reception system including the distribution system and the receiver.

As a background art in this technical field, there is International Publication No. 2004/100549 (Patent Document 1).
Patent Document 1 describes an embodiment that realizes a distribution system including a server that distributes content and a receiver that downloads and reproduces content from the server via the Internet.

  In this embodiment, an example is shown in which an Internet browser acquires a download control file in which content download execution contents are described from a server, the download agent interprets this file, and executes download.

International Publication No. 2004/100549

  In recent years, as stereoscopic video content as well as planar video content has become widespread, Patent Document 1 discloses processing of a content receiver when planar video content and stereoscopic video content are provided together. Not considered.

  The present invention makes it possible to present content to a user in consideration of the distinction between planar video and stereoscopic video when the content receiver provides a mixture of planar video content and stereoscopic video content. With the goal.

  In order to solve the above problems, for example, the configuration described in the claims is adopted.

The present application includes a plurality of means for solving the above problems.
Video content and a downloader that receives metadata describing the video content and the attribute information of the video content in association with each other via a network and stores the metadata in a recording medium; and search for stereoscopic video content A user operation unit that accepts input of items used in the recording, and analyzes the metadata stored in the recording medium to acquire stereoscopic video content information related to stereoscopic video content, and based on the acquired stereoscopic video content information, the input A content receiver comprising: a metadata processing unit that specifies video content having an attribute corresponding to the specified item; and means for displaying the specified video content.

  According to the present invention, when two-dimensional video content and stereoscopic video content are provided to a user in a mixed manner, user convenience in viewing the content can be improved.

It is an example of a structure of a content transmission / reception system. It is a structural example of a delivery system. It is a structural example of a receiver. It is a 1st example which shows the relationship between a receiver and a delivery system. It is a 2nd example which shows the relationship between a receiver and a delivery system. It is a 3rd example which shows the relationship between a receiver and a delivery system. It is a correlation diagram of ECG metadata. It is a structural example of package metadata. It is a structural example of download control information. It is an example of a structure of a reproduction | regeneration control metafile. It is a structural example of a license. It is an example of the content search screen of a receiver. It is an example of the search result screen of a receiver. It is an example of the content purchase screen of a receiver. It is an example of the content detail display screen of a receiver. It is an example of the content reproduction screen of a receiver. It is an example of the export screen of a receiver. It is an example of a transition of the Web content shown with the browser of a receiver. It is an example of the local navigation screen of a receiver. It is an example of a structure of the interface part of a receiver and a removable medium. It is an example of a structure of the interface part of a receiver and a network connection apparatus. It is an example of the processing flowchart in an ECG process part. It is an example of the export processing flow figure to a removable medium in a stream output process part. It is an example of the export processing flow figure to a network connection apparatus in a stream output process part. It is an example of the processing flow figure in local navigation. It is another example of a structure of the interface part of a receiver and a removable medium. It is another example of a structure of the interface part of a receiver and a removable medium. It is a structural example of content metadata. It is a structural example of series metadata. It is an example of the content search screen of a receiver. It is an example of the search result screen of a receiver. It is an example of the content purchase screen of a receiver. It is an example of the content detail display screen of a receiver. It is an example of the local navigation screen of a receiver. It is an example of a structure of a reproduction | regeneration control metafile. It is an example of the local navigation screen of a receiver. It is an example of the local navigation screen of a receiver. It is an example of the local navigation screen of a receiver. It is an example of the display of a thumbnail.

  Hereinafter, examples will be described with reference to the drawings.

In this embodiment, an example of a receiver 50 that receives content and a distribution system 60 will be described.
FIG. 1 is an example of a configuration of a content transmission / reception system to which the present embodiment is applied. The distribution network includes a content distribution network 40 that is connected to a home via the router 43 and guarantees network quality within the network, and an external Internet network 45 that is connected from the content distribution network 40. The distribution system 60 may be connected to the content distribution network 40 via the network switch 42 or may be connected to the Internet network 45 via the router 44 with emphasis on versatility.

Various network communication paths 46 such as coaxial cable, optical fiber, ADSL (Asymmetric Digital Subscriber Line), and wireless communication are assumed for home network connection, and modulation / demodulation suitable for each path is performed by the transmission line modem 45. And converted to an IP network.
In the home, the IP network demodulated by the transmission path modulator / demodulator 46 and converted into a network interface is connected to a device in the home via the router 48.
As home devices, a receiver 50, a storage device (Network Attached Storage) 32 corresponding to an IP network, a personal computer 33, an AV device that can be connected to a network, and the like are assumed. The receiver 50 may have a function of playing back and storing broadcasts received from the antenna 35.

  FIG. 2 is a configuration example of the content distribution system 40.

  The content distribution system 60 is a meta server that distributes a Web server 61 that distributes a Web document 71, ECG metadata 400 that describes attribute information of the content to be distributed, and reproduction control information 200 that describes information necessary for reproducing the content. Manages data server 62, content server 63 that distributes content body 75, DRM server 64 that distributes license 300 including information on the right to use content and the key necessary for decrypting the content, and customer information of the distribution service A customer management server 65, and a billing / settlement server 66 for charging and settlement of contents by the customer.

The servers are connected to each other by the IP network 67 and are connected to the Internet network 45 or the content distribution network 40 of FIG.
A part or all of each server may be directly connected to the Internet network 45 or the content distribution network 40 without going through the IP network 67 to communicate with each other.

  Each server included in the distribution system 60 is merely a convenient model, and an actual distribution system may have a configuration in which a plurality of types of servers are integrated, and there are no servers. It may be okay. In addition, a server used for distributing a plurality of data such as the metadata server 62 may be configured by dividing the actual server for each type of data. Each server is connected by a network such as the Internet.

FIG. 3 is a configuration example of the receiver 50.
The receiver 50 has a storage 550 that can reproduce the received content, output it to a removable medium or a network, and store the content. In the figure, solid arrows indicate the flow of content, and broken arrows indicate the flow of control.

  The receiver 50 is physically connected to the IP network, and transmits and receives IP (Internet Protocol) data packets. The communication I / F (Interface) 510 and the communication I / F 510 are used to transmit TCP (Transmission Control Protocol) and UDP. The communication processing unit 511 performs processing of various IP communication protocols such as (User Datagram Protocol), DHCP (Dynamic Host Configuration Protocol), DNS (domain name server), and HTTP (Hyper Text Transfer Protocol).

  The downloader 55 is a processing unit that performs processing for acquiring content and information related to the content. The DRM client 54 manages the copyright of the content and provides a function for controlling viewing and copying of the content according to the content purchase conditions. The decryptor 514 decrypts the content to be downloaded based on an instruction from the DRM client 54. The stream output processing unit 57 outputs the content to the removable medium 560 connected to the receiver 50. Alternatively, the stream output processing unit 57 outputs content to the network connection device 570 connected via the communication processing unit 511 and the communication I / F 510.

The removable medium 560 is a removable storage medium that can be accessed via the removable medium I / F 534 connected to the stream output processing unit 541.
The receiver 50 includes a remote control I / F 533 for operation, and is operated by the user according to the received remote control signal.
Further, the receiver 50 may have a function of receiving a streaming delivery service for on-demand video / audio content. In this case, a streaming reception processing unit 512 that processes real-time reception of video / audio content via the communication processing unit 511 is provided.

The AV player 53 decodes the downloaded content, the content distributed by streaming, or the content received by broadcasting, and converts it into video and audio signals.
The AV player 53 has a demultiplexer 521 inside, and the processing unit separates the content decoded by the decryptor 514 into video, audio, and subtitle packets, and each packet is divided into a video decoder 522, an audio decoder 523, Send to subtitle decoder 524. These decoders 522, 523, and 524 decode the video, audio, and subtitle information, respectively, and the video / audio output process 530 converts them into integrated video / audio signals. This video / audio signal is output from the receiver 50 to the outside via the video / audio output I / F 531.

For this reason, by connecting a television or the like to the video / audio output I / F 531, the user can view content composed of video / audio.
The video / audio output processing 530 and the video / audio output I / F 531 may be HDMI (registered trademark) standard interfaces that process and output video and audio in an integrated manner. Examples such as video composite signal output and analog audio output that are processed and output to the outside are also possible.

  Further, the receiver 50 may have a function of receiving and recording a digital broadcast. In this case, the receiver 50 receives a broadcast I / F 501 for inputting broadcast radio waves, a digital broadcast reception processing unit 502 that decodes a digital broadcast signal and converts it into a video / audio stream, and a copyright protection unit when decoding the digital broadcast signal. It has CAS (Conditional Access System) 503 for processing.

The receiver 50 can output the downloaded content directly to the stream output processing unit 57 and output it to the removable medium 560 or the like.
The receiver 50 can also temporarily store the downloaded content in the storage 550. In this case, thereafter, the stream output processing unit 57 outputs the content acquired from the storage 550 to the removable medium 560 or the like by the operation of the receiver.

  Even in the configuration having the storage 550, either the export process without storing the content in the storage 550 or the process of exporting the content once stored in the storage 550 may be performed.

In this case, even when the receiver has a storage 550 such as an HDD, the downloaded content can be exported to the removable medium 560 via the stream output processing unit 57, so the content is stored in the storage 550. There is also an advantage that downloading is possible even when there is not enough free space in the storage capacity of the storage.
In addition, when the receiver 50 of FIG. 3 performs only the service of directly exporting 560 to a removable medium without going through the storage 550, a cheaper receiver without the storage 550 can be realized. It becomes.
Further, the downloaded content is temporarily stored in the storage 550 without being decrypted, and the DRM client 54 receives a license from the DRM server 64 when the content stored in the storage 550 is reproduced or exported to the removable media 560 or the like. 300, and the decrypter 514 can decrypt the content stored in the storage 550 based on the content key 311 described in the license 300.

  In the case of content reproduction, the decryptor 514 decodes the content, and the demultiplexer 521 separates the video, audio, and caption data packets. The video decoder 522, the audio decoder 523, and the caption decoder 524 decode the separated video packets, audio packets, and caption data packets. The video / audio output processing unit 530 outputs the decoded video / audio to the outside via the video / audio output I / F 531. Through these processes, the user can view the content.

  In the case of content export, the decryptor 514 decrypts the content, and the stream output processing unit 57 outputs the decrypted content to the removable medium 560 or the like.

  3, the digital broadcast reception processing unit 502, CAS 503, communication processing unit 511, streaming reception processing unit 512, decryptor 514, demultiplexer 521, video decoder 522, audio decoder 523, subtitle decoder 524, video / video decoder, The audio output processing unit 530, the storage 550, the browser 51, the ECG processing unit 52, the AV player 53, the DRM client 54, the downloader 55, and the stream output processing unit 57 are integrated circuits as processing units for performing each processing. It can be realized by hardware.

  In addition, a digital broadcast reception processing program 502, a CAS program 503, a communication processing program 511, a streaming reception processing program 512, a decryptor program 514, a demultiplexer program 521, which are stored in a storage device such as a storage 550 or a memory (not shown). Video decoder program 522, audio decoder program 523, subtitle decoder program 524, video / audio output processing program 530, storage 550, browser program 51, ECG processing program 52, AV player program 53, DRM client program 54, downloader program 55, stream By processing the output processing program 57 and the like with an arithmetic processor such as a central control unit (not shown), all or a part of each It is also possible to realize the management by the software.

  In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

  Next, the data transfer relationship in the content distribution service between the receiver 50 having the system configuration in FIG. 3 and the content distribution system 60 in FIG. 2 will be described with reference to FIGS. 4, 5, and 6. 4 to 5 show only a part of the blocks used in the processing flow from the receiver 50 of FIG. 3, each having other processing units of the receiver 50 of FIG. The configuration described in FIGS. 4 to 5 is not always necessary. Some may be omitted.

The receiver 581 in FIG. 4 is a subset obtained by extracting blocks for exchanging data with the streaming distribution system from the receiver 50 in FIG. 3.
The content distribution system 60 distributes a Web server 61 that distributes a Web document 71, ECG metadata 400 that describes attribute information of the content to be distributed, and a reproduction control metafile 200 that describes information necessary for reproducing the content. The metadata server 62, the content server 63 that distributes the content body 75, the DRM server 64 that distributes the license 300 including the right to use the content and the key information necessary for the decryption of the content necessary for use, and customer information of the distribution service It comprises a customer management server 65 for managing, a billing / settlement server 66 for billing and settlement of contents by customers.
A transmission path 67 for data communication between the receiver 581 and the distribution system 60 assumes the distribution network of FIG.

  In the case of FIG. 4, the browser 51 presents the Web document 71 received from the Web server 61 and operates the operation device such as a remote controller to search and search for the content 75 that the user wants to see. As another method, the ECG (Electric Content Guide) processing unit 52 of the receiver application presents the ECG metadata 400 acquired from the metadata server 62 to the user in the form of ECG, and the content the user wants to see from the ECG. A method for searching and searching for 75 may be provided.

  When the content to be viewed is selected and the user issues a content playback instruction on the Web document 71, the browser 51 acquires the playback control metafile 200 in which the reference destination is described in the Web document 71 from the metadata server 62, and A reproduction request is made to the AV player 53. Alternatively, when the user issues a content playback instruction on the ECG displayed by the ECG processing unit 52, the ECG processing unit 52 transmits the playback control metafile 200 in which the reference destination is described in the ECG metadata 400 from the metadata server 62. Obtaining and making a playback request to the AV player 53.

  The AV player 53 acquires the content key described in the content license 300 and the signal output restriction / copy control information called RMPI (Right. Management and Protection Information) from the DRM client 54 in accordance with the content of the playback control metafile 200. Then, the content key is set in the decryptor 514, the output conditions such as video and audio are set in the video / audio output I / F 531 in accordance with RMPI, and the content 75 distributed from the content server 63 is streamed.

  The DRM client 54 holds a valid license 300 and, if requested by the AV player 53 or the stream output control unit 57, provides a content key or RMPI from the corresponding license 300. If the requested license 300 has not been acquired, the license 300 necessary for content reproduction is acquired from the DRM server 64.

The receiver 582 in FIG. 5 is a subset obtained by extracting blocks for exchanging data with the download distribution system from the receiver 50 in FIG. 3.
Also in the case of FIG. 5, the browser 51 presents the Web document 71 received from the Web server 61 and operates the operation device such as a remote controller to search and search for the content 75 that the user wants to see. As another means, the ECG processing unit 52 of the receiver application presents the ECG metadata 400 acquired from the metadata server 62 to the user in the form of an ECG, and searches the content 75 that the user wants to see from the ECG. A means of finding out may be provided.

  When the content to be viewed is selected and the user issues a content download instruction on the Web document 71, the browser 51 acquires the download control information 100 in which the reference destination is described in the Web document 71 from the metadata server 62, and the downloader. A download execution request is issued to 55. Alternatively, when the user issues a content download instruction on the ECG displayed by the ECG processing unit 52, the ECG processing unit 52 acquires the download control information 100 in which the reference destination is described in the ECG metadata 400 from the metadata server 62. Then, a download execution request is made to the downloader 55.

  The downloader 55 acquires the playback control metafile 200, and in accordance with the contents, downloader 55 controls the content key described in the content license 300 and signal output restriction / copy control called RMPI (Right. Management and Protection Information) from the DRM client 54. Information is acquired, the content key is set in the decryptor 514, the output conditions such as video and audio are set for the export destination removable media 560 and the network connection device 570 in accordance with RMPI, and the download control information 100 sets the distribution content. The content 75 specified by the URL indicating the location 156 is requested to the content server 63, the content 75 distributed from the content server 63 is downloaded, and the content decrypted by the decryptor 514 is stream output controlled. Outputs to section 57, performs the export process.

The receiver 583 in FIG. 6 has extracted and described blocks for exchanging data with the download distribution system via the storage 550 from the receiver 50 in FIG.
In the case of FIG. 6, the browser 51 presents the Web 71 received from the Web server 61 and operates the operation device such as a remote controller to search and search for the content 75 that the user wants to see. Although not shown in the figure, as in FIG. 5, the ECG processing unit 52 of the receiver application presents the ECG metadata 400 acquired from the metadata server 62 to the user, and searches for the content 75 that the user wants to view. May provide a means of finding out.

When the selection of the content to be viewed from the user is received and the user issues a content download instruction on the Web document 71, the browser 51 receives the download control information 100 in which the reference destination is described in the Web document 71 from the metadata server 62. Obtain the download and make a download execution request to the downloader 55.
The downloader 55 acquires the ECG metadata 400, the reproduction control metafile 200, and the content 75 of the content to be downloaded, and accumulates them in the storage 550.

The accumulated content 75 can be searched for, selected, reproduced, or exported by the ECG processing unit 52 of the receiver.
When the ECG processing unit 52 is instructed to reproduce the content, the AV player 53 is activated to request reproduction, and when the content is instructed to be exported, the stream output control unit 57 is activated to export the content. Request processing.

Next, the contents of information processed by the receiver will be described in detail.
FIG. 7 is a correlation diagram of ECG metadata 400 presented for content search by the ECG processing unit 52 as an ECG. The ECG metadata 400 is described in the XML format.

  ECG metadata 400 is content metadata 430 that describes attribute information such as the name and description of each distributed program, video, audio, genre, etc., and each program can be managed by grouping a series of series. Series metadata 410, license metadata 470 describing the purchase license of the program, and package metadata 450 describing the purchase conditions of the program or grouped program. The content metadata 430 can describe a series ID that uniquely identifies the series metadata 410 to which the program belongs, and the group metadata 410 describes the series ID of the series metadata 410 to which the program belongs. By doing so, a hierarchical group structure can be defined.

  The license metadata 470 has a content ID that uniquely identifies content metadata 430 of a program that can be used with the license, and a purchase ID that uniquely identifies package metadata 450 that can be used as a purchase condition. The package metadata 450 has a purchase ID and a content ID corresponding to each other. The content metadata 430 is the reference information for acquiring the playback control information 200 for streaming playback and the download control information 100 for downloading content when the content can be played back by streaming and / or downloaded. Can have.

FIG. 8 shows a configuration example of the package metadata 470 in the ECG metadata 400.
The package metadata 450 includes a billing validity period 451 describing the start date / time and end date / time of billing, a purchase ID 452 for uniquely identifying the package metadata 450, and a target content ID 453 for identifying the content to be purchased of the package metadata 450. Hold.
The package metadata 450 can describe a plurality of packages in one package metadata, and has the following information for each package.

The package name 461, the package price 462, and the description 465 are information for presenting the package contents to the user. The purchase type 463 is information for identifying the purchase form of the package, such as whether the package is a single content purchase, a series batch purchase, or a monthly contract purchase. The distribution type 464 is a content distribution type. Is information for identifying a distribution form such as whether it is streaming distribution, download distribution, or both.
The purchase request URL 466 is information describing an access destination of a server that requests a purchase transaction based on a user's purchase operation.

  That is, the ECG processing unit 52 refers to the content metadata 430 or the series metadata 410, presents a search screen, finds the content to be used, and refers to the license metadata 470 of the content. The purchase condition of the content is presented to the user, and the purchase operation is performed according to the package metadata 450. When content streaming playback is instructed on the ECG presented by the ECG processing unit 52, the playback control information 200 is acquired according to the URL described in the content metadata 430, and the AV player 53 plays back the playback control information 200. Streaming playback is performed according to the description content.

  When content download is instructed on the ECG presented by the ECG processing unit 52, the download control information 100 is acquired according to the URL described in the content metadata 430, and the downloader 55 downloads the download control information 100. Download the content according to the description.

FIG. 9 is a configuration example of the download control information 100. The download control information 100 includes download control attribute information 110 describing the contents of the metafile itself, and download execution unit information 150 used to download one or more contents.
The download control information 100 is described by RSS (RDF Site Summary or Really Simple Syndication), for example. The download control information can be created (prepared) for a plurality of arbitrary contents in a certain package, but does not extend over a plurality of packages.

  It is also possible to prepare a plurality of packages for a certain package. However, download control information should be prepared so that all contents in the package can be downloaded. The download control information 100 may be updated, and the receiver checks at regular intervals and updates the difference. In the case of RSS, each content is uniquely identified by an enclosure url.

  The download control information 100 includes a download control information name 111 indicating the name of the corresponding download control information 100 (eg, download reservation name, file name, ID, etc.), and the location of the corresponding download control information 100 (eg, download reservation). The URL on the Internet of the website providing the URL, but not limited to the URL, it may be another address. The same applies to the following. The explanation of the download control information location 112 and the corresponding download control information 100 ( For example, it has information such as a description 113 of download control information indicating a download reservation, a language type, an update check flag 114, an update deadline date 115, and the like.

  The update check flag 114 is a flag for determining whether or not the contents of the download control information 100 on the metadata server 62 have been changed, and whether or not to check periodically. After acquisition, it takes a “single” value that is not periodically checked. The update deadline date and time 115 is valid when the update check flag 114 is “update”, and describes the date and time of the deadline to continue checking the update of the download control information 100.

  The update deadline date 115 indicates a deadline for monitoring content updates. The unit of time limit (day unit, hour unit, minute unit, etc.) is arbitrary. It is also possible to take a value indicating "no expiration", i.e. semi-permanent checking. Further, as another implementation method, a configuration in which the update check flag 114 is omitted by handling a special value (for example, all 0) of the update deadline date and time 115 as a value indicating the update check flag 114 “single” can be realized. .

  A plurality of download execution unit information 150 can be described in the download control information 100. For each content to be downloaded, the title 151 of the distribution content indicating the title of the content (may be a program name or the like, or a file name or ID), description of the content (features, remarks, etc.) A description 152 of the distribution content indicating the distribution date, a distribution date 153 indicating the date and time of distribution (may be in units of days or minutes), a content ID 154 of the distribution content uniquely identifying the content on the Internet, and distribution Content type 155, content location 156 indicating the acquisition destination URL of the distribution content, ECG metadata location 157 indicating the acquisition destination URL of ECG metadata corresponding to the content, and acquisition of a reproduction control metafile corresponding to the content Of the playback control metafile indicating the destination URL Standing 158, delivery content size 159, stores information such as the location 160 of the stream reproduction control information indicating the acquisition destination of the URL of the stream reproduction control information that provides such picture playback position information of the content.

  For example, the content ID identifier 154 is described by a character string defined by the schema “CRID: // authority / content_id”, and the authority part is a keyword that uniquely identifies the content distributor on the network. is there. In this embodiment, a domain name managed as a unique name on the Internet is used as authority.

  The content_id after authority / is an ID that uniquely identifies the content within authority, and the format of the character string may be freely operated with authority. Through such operations, it becomes possible to uniquely identify content on the Internet by the content identifier 154, and by accessing the content identifier 154 as a URL on the Internet, the target content and related metadata are acquired. It becomes possible to do.

  The distribution date and time 153 normally describes the date and time when the content is stored in the content server 63 and published. However, when the download control information 100 is distributed, the content is not yet released, and the distribution date and time 153 is scheduled to be distributed. Future date and time may be listed. In addition, once the content of the distributed content is updated, the updated date / time is described in the distribution date / time 153.

  The distribution content type 155 describes the type of video, photo, music, program, multimedia data distributed from the server, for example. The video may be further subdivided into movies, news, sports, etc., and the music may be further subdivided into classical, rock, jazz, etc. types.

  Distribution content metadata is auxiliary information necessary for content playback and execution. Examples include content search genre and keyword information, and, if the content is video information, its thumbnail and chapter information. .

  FIG. 10 shows an example of the configuration of the playback control metafile 200. A configuration of the reproduction control metafile 200 acquired by referring to the download control information 100 will be described.

  The playback control metafile 200 is decrypted by accessing the copyright management server in order to decrypt the content-specific attribute information 210, which is the AV stream information of the content necessary for content playback, and the encrypted content. 3 XML documents including license acquisition information 220 necessary for acquiring a content key and the like, and network control information 230 necessary for reproduction control in the case of streaming VOD. The network control information 230 is not necessary in the case of download distribution.

  The content unique attribute information 210 includes the file name and reference destination 211 of the content main body file, the identification information 212 indicating whether the content is encrypted, the time length 213 of the content, the video encoding method, the resolution / scanning / aspect ratio, etc. It provides video signal attribute information 214, audio signal attribute information 215 such as stereo / mono / multi-channel distinction, and the like.

  The content license acquisition information 220 includes copyright management server address information 221 as a license acquisition destination of the target content, copyright management method type information 223, a license ID 224 indicating the type of copyright protection range attached to the content, copyright Information such as the value 222 of the element to be signed and the reference destination 226, the license usage condition information 225, and the public key certificate 227 necessary for verifying a certain signature for performing server authentication between the management server and the client receiver. I will provide a.

  The network control information 230 includes various streaming server function information such as information 231 on the available streaming protocol method, special playback and content cueing method 232, whether paused playback can be resumed from the middle, In the case where the function allows variable-speed playback in a plurality of stages, information 233 indicating the magnification for each stage and information 234 on the playback method are described.

  As a playback method, a method that prepares and distributes a stream dedicated to variable-speed playback on the server side, a method that realizes pseudo high-speed playback by skipping and playing back still images included in the normal-speed playback stream, etc. Is done.

FIG. 11 shows a configuration example of the license 300. A configuration of the license 300 that is acquired by referring to the download control information 100, or acquired at the start of content reproduction or export starts will be described.
The license includes a reproduction license 310 that describes a right to view a program and an export license 320 that describes a right to output to an external medium or network.

The license holds the encryption keys 311 and 321 of the content necessary for decrypting the content. In the case of the playback license 310, the use start date and use end date 312, the signal output restriction at the time of playback and the copy control information 313 have.
The use start date / time and use end date / time 312 can be designated indefinitely.
In the export license 320, for each exportable medium (or network), use condition information 322 such as copy restriction and analog output restriction when outputting to each medium can be designated.

  The export license 320 can be exported once with one license, and N export licenses 320 are distributed from the DRM server 64 to the receiver 50 so that one content can be exported N times.

Next, an example of a user interface of a receiver application realized based on the above system configuration and data configuration will be described with reference to FIGS.
FIG. 12 is an example of a content search screen 1000 realized by the ECG processing unit 52.
Remote control On this screen, which is activated on this screen, choices such as keyword 1001, genre 1002, delivery date 1003, price 1004, provision form 1005, etc. and input fields are prepared. In response, the ECG metadata 400 is searched.

  FIG. 13 is a display example of the search result screen 1100 displayed by the ECG processing unit 52. In this example, a list of search results is displayed, and purchase or details 1104, VOD viewing 1105, and DL related buttons 1106 are displayed as title 1101, provision form 1102, purchase status 1103, and operation buttons for content.

In the provision form column 1102, if the content is provided in the package metadata 450 only by VOD distribution (streaming distribution), “DL” if it is provided only by download distribution, if “DL” is provided by both. It is assumed that “VOD / DL” is displayed. VOD stands for Video On Demand.
In the purchase status column 1103, information managed by the receiver, such as whether the content has been purchased by the user, not purchased, or free content, is presented.

The purchase or detail button 1104 displays a “purchase” button if the content has not been purchased, and displays a “detail” button if the content has been purchased or purchase is not required for free.
The “VOD viewing” button 1105 is displayed only when the content can be viewed by VOD (streaming). When this button is selected, VOD viewing is started.

  The DL-related button 1106 is displayed only for downloadable content, and according to the state, download is instructed, but for content that has not yet been downloaded, a “DL waiting” button that cannot be operated is displayed, and download starts. When the download is completed, “DL viewing” is displayed. When the “DL viewing” button is selected, the downloaded content can be viewed. Even in “in DL”, there may be a receiver that enables viewing of content as long as it is buffered to some extent.

FIG. 14 is an example of a content purchase screen 1200 displayed by the ECG processing unit 52. The content purchase screen 1200 is displayed when the “Purchase” button is selected on the search result screen 1100. Title 1201, content 1202, director 1203, performer 1204, genre 1205, viewing deadline 1206, playback necessary for content purchase When the time and video / audio information 1207, the number of times of export and the output destination information 1208, the provision form option 1209, the price 1210, etc. are presented based on the ECG metadata 400, and the provision form 1209 is selectable, You can choose VOD, download, or both.

In the example of FIG. 14, “VOD” is displayed as being invalid due to a strike-through line, and “Download” is displayed as valid. A check mark indicates that the user has selected “download”.
After the selection, by selecting a “Purchase” button 1223, a content purchase transaction occurs with the distribution system.
When the “Return” button 1224 is selected, the screen returns to the search result screen 1100.

FIG. 15 is an example of a content detail screen 1250 displayed by the ECG processing unit 52. After purchasing the content, the content detail screen 1250 is presented by selecting the “detail” button on the search result screen 1100.
In this screen, the displayed information is almost the same as the content purchase screen 1200, but since it has already been purchased, there is no “Purchase” button 1223. Instead, “VOD viewing” 1220, “download viewing” 1221, “export” 1222 Buttons are displayed, and the buttons are enabled and can be operated for the contents for which the respective functions are effective.
In addition, the provision form 1209 column cannot be selected because it has already been purchased, and only the provision form of the purchased content is displayed. For the contents that can be downloaded and viewed, the download progress status 1211 may be displayed. is there.

  FIG. 16 is an example of a content playback screen 1300 displayed by the ECG processing unit 52. When VOD viewing or download viewing is selected on the content search result screen 1100 or the content detail screen 1250, a content playback screen 1300 is presented.

  On the content playback screen 1300, based on the playback control information 200, the title banner 1302 displays the title of the content 1303, the playback time 1304, and detailed video / audio information 1305. In addition, some receivers 1406 display the current reproduction position in the entire reproduction time depending on the receiver.

FIG. 17 is an example of an export screen 1400 displayed by the ECG processing unit 52. When export is instructed on the content details screen 1250, an export screen 1400 is presented.
On this screen, the content title 1401, capacity 1402, and the like are displayed based on the ECG metadata 400, and allowed output destination options 1403 and the remaining number of exports 1404 managed by the receiver are displayed.
When the user selects an output destination and selects an “export destination check” button 1405, it is checked whether or not the content to be exported can be recorded on the export destination medium. The cause is displayed in the status column 1407.

When the “Export start” button 1406 is selected, a pre-check is performed in the same manner as when the “Export destination check” button 1405 is selected. If there is a problem, the cause is displayed in the status column 1407. In the case of the “start” button 1406, the export is started if it is normal.
The progress of the export is displayed as a progress status 1406. When the export is completed, an export screen 1400 in which the remaining number of times 1404 is reduced by one is displayed.
If it is desired to cancel the export before the completion of the export and return to the content detail screen 1250, the “Cancel” button 1409 is selected.

As described above, the ECG screen generated by the ECG processing unit 52 is configured.
As another example, the Web document 71 acquired from the Web server 61 can be presented by the browser 51 instead of the ECG processing unit 52, so that content search and reproduction can be performed.

FIG. 18 shows a transition example of the Web document 71 presented on the browser 51.
The browser 51 first displays the content sales portal page 1501 by accepting selection of a home page or bookmark when the browser 51 is activated. Here, when content search is instructed, the browser 51 displays a content list page 1502 of search results, and when content is selected from the search results, a content purchase page 1503 is displayed.

In the content purchase screen 1503, when purchase by the VOD is selected according to the distribution mode in which the distribution mode is selected and the content is purchased, the browser 51 displays the VOD playback start page 1504 and VOD playback is instructed. Then, the playback control metafile 200 is referred to, and the content playback screen of FIG. 16 is displayed.
In addition, when purchase by download is selected on the content purchase screen 1503, the browser 51 displays a download start page 1505. When the download start instruction is issued, the content is downloaded in the background based on the download control information 100. Start.

FIG. 19 shows an example of a local navigation screen 1600 displayed by the browser 51. The status of the content that is downloaded and distributed is displayed on the local navigation screen 1600.
On this screen, a list of contents that have been instructed to be downloaded or contents that have been downloaded are displayed, and a “Purchase” or “Details” button 1604 is displayed as an operation button for the content title 1601, download state 1602, purchase state 1603, and content. Then, a “view” button 1605 is displayed for contents that can be viewed as purchase conditions, and an “export” button 1606 is displayed for contents that can be exported. Further, a search condition input field may be provided on the local navigation screen 1600 so that the search can be made within the range of the content instructed to be downloaded to the receiver 50 or the content already downloaded. In this case, the local search screen shown in FIG. As in the navigation screen, “detail”, “view”, and “export” buttons may be provided. As a result, it is possible for the user to search for desired content from the content stored in the receiver 50 and to perform processing such as export. As will be described later with reference to FIG. 25, the ECG processing unit 52 performs processing when selection of an operation button or input of a search instruction is received from a user.

  In the download status column 1602, “DL waiting” in which download is instructed but not yet downloaded, “download in progress” that displays the progress status of download, “DL completed” in which download is completed, and an error occurs during download Then, a status display such as “DL error” is displayed.

In the purchase state column 1603, states such as unpurchased, purchased, and free are displayed.
As for the buttons, a “purchase” button is displayed for unpurchased content, and a “details” button is displayed for purchased content. The viewing button becomes valid and can be selected when buffering has progressed to the extent that downloading is complete or playback is possible even during downloading. When the content is ready for export, an “export” button 1606 is displayed as valid and can be selected.

When the “view” button 1605 is selected, the screen transitions to the content viewing screen 1300, and when the “export” button 1606 is selected, the screen transitions to the export screen 1400.
As described above, from the content search to the content reproduction can be performed on the Web site.

Next, the export process will be described in detail with reference to FIGS.
FIG. 20 is a configuration example of an interface portion between the receiver and the removable medium. As the removable medium, for example, a removable HDD such as iVDR (registered trademark) is assumed. However, it is not limited to iVDR.
In the figure, solid arrows indicate the flow of content, and broken arrows indicate the flow of control.

FIG. 20 shows a configuration example of the stream output processing unit 57 that performs export processing to a removable medium 560 having a copyright protection function. The stream output control unit 57 of the receiver 50 includes a media authentication processing unit 541 that authenticates with removable media, a content key generation unit 543 that generates an encryption key for encrypting content to be transferred to the media, and encrypts content based on the content key. Content encryption processing unit 542, and a key encryption processing unit 544 that encrypts and transfers the generated content key to a removable medium.
The content input to the content encryption processing unit 542 is input from the decryptor 514 or the demultiplexer 521 of the receiver 50.

Note that the media authentication processing unit 541, the content key generation unit 543, the content encryption processing unit 542, and the key encryption processing unit 544 illustrated in FIG. 20 are all or partly integrated as a processing unit that performs each process. It can be realized by hardware by making it into a circuit. In addition, the media authentication processing program 541, the content key generation program 543, the content encryption processing program 542, the key encryption processing program 544 and the like stored in the storage 550 or a storage device such as a memory (not shown) are controlled by a central control (not shown). By processing with an arithmetic processor such as a unit, all or a part of each processing can be realized by software.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

  The removable media 560 connected via the removable I / F 534 receives and decrypts the encrypted content key, the media authentication processing unit 561 that mutually authenticates with the media authentication processing unit 541 of the receiver 50. The key decryption processing unit 563 for extracting the content key and the protected storage area 564 that can be read and written only by the mutually-reliable and reliable receiver 50 indicate the received content key and the usage conditions (the number of copies, the expiration date for use) of the content. Information is stored in association with content.

Here, the number of times of copying indicates the number of recorded contents that can be further copied. If this number is M, M + 1 contents can be used in addition to the original contents body. The use time limit indicates the use time limit of the content on the removable medium, and the following description method is possible.
(1) Relative time from when content is written to removable media, etc. (2) Relative time from first access to content on removable media (3) Absolute use start date / time, use end date / time (any Can also be omitted, and the omitted start date and time and end date and time are considered to be unlimited)
Note that the media authentication processing unit 561 and the key decryption processing unit 563 described in FIG. 20 are realized by hardware by integrating all or part of them as a processing unit for performing each process. Can do. Further, the media authentication processing program 561, the key decryption processing program 563, etc. stored in the data storage area 562, the protected storage area 564, a memory area (not shown), and the like are processed by an arithmetic processor such as a central control unit (not shown). Thus, all or a part of each process can be realized by software.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

The content encrypted by the media encryption processing unit 542 is stored in the data storage area 562 through the removable I / F 534.
It is conceivable that the media authentication processing unit 541 authenticates the reliability of the removable media 560 and authenticates the reliability of both the removable media 560 and the receiver 50 including the removable I / F 534.

  When the mutually authenticated receiver 50 reads the content stored in the removable medium 560, the content key of the content is read from the protected storage area 564, and the encrypted content read from the data storage area 562 is received. It can be used by decrypting the content key using the device 50.

  FIG. 21 is a configuration example of an interface portion between the receiver and the network connection device. FIG. 21 shows a configuration example of the stream output processing unit 57 that performs export processing via a network having a copyright protection function. In this case, the stream output control unit 57 of the receiver 50 generates a communication key for encrypting content based on the communication authentication processing unit 545 that performs mutual authentication with the network connection device and the common key exchanged at the time of authentication. The key generation unit 547 includes a communication encryption processing unit 546 that encrypts content based on the generated communication key and sends out the content via the communication I / F 510.

Note that the communication authentication processing unit 545, the communication encryption processing unit 546, and the communication key generation unit 547 described in FIG. 21 are all integrated into a circuit as a processing unit that performs each processing. It can be realized with wear. Further, the communication authentication processing program 545, the communication encryption processing program 546, the communication key generation program 547, etc. stored in the storage device 550 or a storage device such as a memory (not shown) are processed by an arithmetic processor such as a central control unit (not shown). Thus, all or a part of each processing can be realized by software.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

The network connection device is connected to the network 580 via the communication I / F 571 and communicates with the receiver 50.
The communication authentication processing unit 572 performs mutual authentication with the communication authentication processing unit 545 of the receiver. The communication key generation unit 574 generates a communication key for decrypting the content based on the common key exchanged at the time of authentication. The communication decryption processing unit 573 decrypts the content received via the communication I / F 510 based on the generated communication key.

  In the example of FIG. 21, the content decrypted by the communication decryption processing unit 573 is encrypted by the local encryption processing unit 575 according to the encryption method of the network connection device 570 and stored in the data storage area 578 of the network connection device 570. Saved. The encryption key at this time is generated by the local key generation unit 576, and information indicating the local key corresponding to the content and the usage condition (number of copies, expiration date for use) of the content can be accessed only by a trusted device or software. It is stored in the protected storage area 577.

Note that the communication decryption processing unit 573, the communication key generation unit 574, the local encryption processing unit 575, and the local key generation unit 576 described in FIG. 21 are all or partly integrated as a processing unit that performs each process. It can be realized by hardware by making it into a circuit. Further, a communication decryption processing program 573, a communication key generation program 574, a local encryption processing program 575, a local key generation program 576, etc. stored in the data storage area 578, the protected storage area 577, a memory area (not shown), etc. By performing processing with an arithmetic processor such as a central control unit (not shown), all or part of each processing can be realized by software.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

  In the example of FIG. 21, the network connection device 570 has a device-specific data storage area 578. However, the network connection device 570 has a removable I / F 534 as the receiver 50 of FIG. The content may be transferred to the removable medium 560 via the removable I / F 534. In this case, the configuration of the network connection device 570 conforms to the configuration of the receiver 50 in FIG.

With respect to the example of the receiver corresponding to the content distribution as described above, examples of processing performed by the receiver will be described with reference to FIGS.
FIG. 22 is an example of a processing flow diagram 2000 of the ECG processing unit 52.
The ECG processing unit 52 acquires ECG metadata from the metadata server (2001), converts the acquired ECG metadata into a database that can be easily processed, stores it in the storage (2002), and displays the content search screen 1000. Present (2003).

  Here, search conditions are input and set (2004), and when search execution is instructed, a search result screen 1100 is presented. When an operation for the content is accepted on this screen (2006) and the “purchase button” is selected, the ECG processing unit 52 displays the content purchase screen 1200 (2007). When the user selects purchase conditions and selects a purchase button on this screen (2008), the ECG processing unit 52 displays a content detail display screen 1250 (2009). The content detail display screen 1250 is also displayed by selecting the “detail” button from the search result screen 1100.

  When the user selects the “VOD viewing” button from the search result screen 1100, the AV player is activated and VOD viewing is started (2011). When the “DL viewing” button is selected, the AV player is activated and download viewing is started (2012).

  On the content detail display screen 1250, when the “VOD viewing” button is selected by a user operation, the AV player is activated and VOD viewing is started (2011). When the “DL viewing” button is selected, the AV player is activated and download viewing is started (2012). When the “export” button is selected, the screen transitions to the export screen 1400 (2013).

FIG. 23 is an example of a processing flow of the stream output processing unit 57 when exporting content to the removable medium 560 on the export screen 1400.
After the export screen 1400 is presented (2101), when the user selects an output destination by an operation on the screen (2102) and selects an “export destination check” button, the stream output processing unit 57 sets the output destination. It is checked whether the removable medium 560 is connected (2103). If not connected, an error message indicating unconnected is presented (2110).

  If connected, the media authentication processing unit 541 confirms authentication with the output destination removable medium 560 (2104), and performs a detailed check of the removable medium 560 (2105). If there is no abnormality for writing the content, a result indicating normality is presented (2106). If there is an abnormality, the cause of the error is presented (2110), and the operation returns to the operation accepting state on the export screen (2102). .

  The errors at this time include an authentication error caused by the cause of the removable medium 560 or the receiver 50, an error of insufficient remaining capacity necessary for writing the content, and a speed error of the removable media 560 that does not satisfy the speed necessary for reproducing the content. Various factors are conceivable, such as a storage format error when the file format specified by the removable medium 560 is not suitable for content storage, and a reading / writing error of the removable medium 560.

  When the “start export” button is selected on the export screen 1400, the stream output processing unit 57 checks whether the removable medium 560 is connected to the output destination (2107). If not connected, an error message indicating unconnected is presented (2110). If it is connected, the stream output processing unit 57 next confirms authentication with the output destination removable medium 560 (2108), and performs a detailed check of the output destination removable medium 560 (2109). Here, if there is an abnormality in writing the content, the cause of the error is presented (2110), and the operation reception state of the export screen is returned (2102). If there are no abnormalities, proceed to export processing.

  In the export process, first, the DRM client 54 acquires the export license 320 from the DRM server 64 (2118), and then the content key generation unit 543 generates a content key (2111). The key encryption processing unit 544 encrypts the key and exchanges the key with the output destination removable medium 560 (2112). Also, the content key generation unit 543 sets a content key in the content encryption processing unit 542 (2113). The content encryption processing unit 542 executes export processing to the removable medium 560 (2114).

  When the export is completed (2115), in the export end process (2116), the media authentication processing unit 561 performs processing such as saving the content key and content usage condition information to the removable medium 560, and updating the file management information. In other receivers and the like, the removable medium 560 can be read and written. Before the export is completed, if the user's cancel instruction or the removable media 560 is abnormal and the export is not completed normally, the cause of abnormal termination is presented (2117), and the export screen is displayed again ( 2101).

FIG. 24 is an example of a processing flow of the stream output processing unit 57 when exporting to the network connection device 570 on the export screen 1400.
After presenting the export screen 1400 (2201), when an output destination is selected by an operation on the screen (2202) and the “export destination check” button is selected, the communication authentication processing unit 545 connects to the output destination via a network. It is checked whether or not the device 570 is connected (2203). If not connected, an error message indicating unconnected is displayed (2210). If connected, the communication authentication processing unit 545 next confirms authentication with the network connection device 570 that is the output destination (2204), and performs a detailed check of the network connection device 570 (2105). If there is no abnormality for writing the content, a normal result is presented (2106). If there is an abnormality, the cause of the error is presented (2110), and the operation returns to the operation accepting state on the export screen (2102).

  Similar to the export to the removable medium 560, the error in this case is also an authentication error caused by the cause on the network connection device 570 or the receiver 50 side, an error of insufficient remaining capacity on the network connection device 570 side necessary for storing the content, Various errors such as a speed error of the network connection device 570 that does not satisfy the speed required for playback, a storage format error when the file format specified by the network connection device 570 is not suitable for storing contents, a device abnormality of the network connection device 570, etc. There are various factors.

  When the “start export” button is selected on the export screen 1400, the communication authentication processing unit 545 checks whether the removable medium 560 is connected to the output destination (2207). If not connected, an error message indicating unconnected is displayed (2210). If connected, next, the communication authentication processing unit 545 confirms the authentication with the output destination network connection device 570 (2208), and performs a detailed check of the output destination network connection device 570 (2209). Here, if there is an abnormality in writing the content, the cause of the error is presented (2210), and the operation reception state of the export screen is returned (2202). If there is no abnormality, the process proceeds to the export process.

  In the export process, first, the DRM client 54 acquires the export license 320 from the DRM server 64 (2218), and the communication key generated based on the key exchanged at the time of mutual authentication by the communication authentication processing unit 545 is converted into the communication encryption processing unit. The communication encryption processing unit 546 executes export processing to the network connection device 570 (2214).

  When the export is completed (2215), processing such as closing the communication session is performed in the export end processing (2216). Before the export is completed, if a user cancel instruction or an abnormality of the network connection device 570 occurs and the export is not completed normally, the cause of the abnormal termination is presented (2217), and the display returns to the export screen presentation. (2201).

FIG. 25 is an example of a processing flow diagram of the ECG processing unit 52 on the local navigation screen 1600 of FIG.
In the local navigation screen 1600, the ECG processing unit 52 reads the ECG metadata of the content of download distribution stored in a storage unit (not shown) (2301), and presents the local navigation screen 1600 based on the information (2302).

  In this state, the user's operation is accepted (2303), and when the “Purchase” button is selected, the ECG processing unit 52 displays the content purchase screen 1200 (2304). When the user selects purchase conditions on this screen and selects a “Purchase” button (2305), the ECG processing unit 52 displays a content detail display screen 1250 (2306). The content detail display screen 1250 is also displayed by selecting a “detail” button from the local navigation screen 1600.

When the “view” button is selected from the local navigation screen 1600, the ECG processing unit 52 activates the AV player 53 to start downloading and viewing (2308). When the “export” button is selected, the export screen 1400 is displayed. (2309).
Even on the content detail display screen, when the “view” button is selected by the user's operation (2307), the AV player 53 is activated and download viewing is started (2308). When the “export” button is selected, the export screen is displayed. A transition is made to 1400 (2309).

  According to the embodiment described above, the receiver 50 is connected to the network via the ECG displayed on the ECG processing unit 52, the Web screen displayed on the browser 51, or the local navigation 1600. Content can be acquired from and viewed.

  In FIGS. 22 and 25, the case where content is viewed or exported using the content search screen generated by the ECG processing unit 52 or the local navigation screen has been described. However, the present invention is not limited to this. The browser 51 may generate a content search screen or a local navigation screen and perform similar processing, or the AV player 53 may generate a content search screen or a local navigation screen and perform similar processing. .

Another example of the removable medium used by the receiver 50 is shown in FIGS.
FIG. 26 shows an example in which the removable medium is an optical disk medium. A media drive 580 is connected to the removable medium I / F 534, and the removable medium 585 is inserted into the media drive 580, and the Can read and write.

The stream output processing unit 57 includes a drive authentication processing unit 551, a content key generation unit 548, a key read / write processing unit 548, and a content encryption processing unit 550.
When a removable medium 585 having a copyright protection function is inserted into a media drive 580 having a copyright protection function, it is possible to read and write the copyright-protected content, but the stream output control unit 57 of the receiver 50 Performs authentication processing between the authentication processing unit 581 of the media drive 580 and the drive authentication processing unit 551 as to whether or not the removable media 585 and the media drive 580 support copyright protection.

  After the authentication is established, the key generated by the content key generation unit 548 is set in the content encryption processing unit 550, the content is encrypted and written to the removable medium 585, and the key is encrypted to the removable medium 585 through the key read / write processing unit 549. Information indicating the media key used for conversion and content usage conditions (number of copies, expiration date for use) is written.

Note that the drive authentication processing unit 551, the content key generation unit 548, the content encryption processing unit 550, and the key read / write processing unit 549 illustrated in FIG. 26 are all or partly integrated as a processing unit that performs each process. It can be realized by hardware by making it into a circuit. Further, a central control (not shown) controls a drive authentication processing program 551, a content key generation program 548, a content encryption processing program 550, a key read / write processing program 549, etc. stored in a storage device such as the storage 550 or a memory (not shown). By processing with an arithmetic processor such as a unit, all or a part of each processing can be realized by software.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

Note that the media read / write unit 582 and the authentication processing unit 581 illustrated in FIG. 26 can be realized by hardware by integrating all or part of them as a processing unit that performs each processing. . Further, the media read / write program 582, the authentication processing program 581 and the like stored in a memory area (not shown) are processed by an arithmetic processor such as a central control unit (not shown) so that all or a part of each processing can be performed by software. Can also be realized.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

FIG. 27 shows an example in which the removable medium is a memory card. A removable medium 590 is directly connected to the removable medium I / F 534.
The stream output processing unit 57 includes a drive authentication processing unit 552, a content key generation unit 553, a key read / write processing unit 554, and a content encryption processing unit 555.

  The direct removable medium 590 includes a general data storage area 591 and a protected storage area 592 that holds a key for encrypting data, and the drive authentication processing unit 552 protects whether the removable medium 590 is copyright protection-compatible. Judgment is made based on the presence / absence of the storage area 592, and after the authentication is established, the key generated by the content key generation unit 553 is set in the content encryption processing unit 555, and the content is encrypted and written to the data storage area 591 of the removable medium 590 Then, through the key read / write processing unit 554, the media key used in the protected storage area 592 and information indicating the usage conditions (the number of copies and the expiration date for use) are stored.

Note that the media authentication processing unit 552, the content key generation unit 553, the content encryption processing unit 555, and the key read / write processing unit 554 illustrated in FIG. 27 are all or partly integrated as a processing unit that performs each process. It can be realized by hardware by making it into a circuit. Further, the media authentication processing program 552, the content key generation program 553, the content encryption processing program 555, the key read / write processing program 554, etc. stored in the storage 550 or a storage device such as a memory (not shown) are controlled by a central control (not shown). By processing with an arithmetic processor such as a unit, all or a part of each processing can be realized by software.
In order to simplify the description, each process realized by executing various programs by the central control unit or the like is described mainly with respect to each processing unit realized by the program. When each processing unit is realized by hardware, each processing unit mainly performs each process.

  According to the above embodiment, the receiver 50 can export the copyright-protected content of the received content 75 to various forms of removable media.

  In this embodiment, a user uses a service for individually downloading a program content such as a movie via a network according to a user instruction, a so-called DL (Download) service, and 3D video (protruded from a display device by stereoscopic viewing). An example of a case of searching for content when purchasing content in which 3D video and 2D video (planar video) are mixed, and a case of displaying information related to 3D of the content after purchase will be described. In the present embodiment, parts different from those in the first embodiment will be mainly described, and the parts not specifically described are the same as those in the first embodiment.

  First, terms will be explained.

  As the 3D video format, SBS (Side by Side) that realizes 3D video by video that is arranged side by side on the right and left of one screen, independent of video codec, and H. The video format of H.264 / MPEG4 AVC format is expanded, and the main video data viewed from one viewpoint and the video viewed from the other viewpoint are composed of the difference information of the main video data, so that the compression rate is higher than that of SBS. There is MVC (Multiview Video Coding) that realizes 3D video. As a conventional technique, 3D content distribution forms in the format of SBS and MVC have become mainstream.

  Here, the number of viewpoints indicates a position on an angle at which a 3D image can be viewed stereoscopically with respect to the display device. In SBS, the number of viewpoints is composed of two left and right viewpoint images when viewed from the front of the display device. Therefore, only when viewed from the front, the human eye can obtain a stereoscopic effect.

In order to be able to view the displayed image stereoscopically even from an angle other than the front, prepare the image as fine as possible when viewed from other than the front, and select the optimal image according to the angle that the human sees. The three-dimensional effect can be obtained at an angle other than the front.
The number of videos corresponding to the angle viewed by humans is called the number of viewpoints, and by preparing videos with a larger number of viewpoints, it is possible to widen the viewing angle at which a stereoscopic effect can be obtained.

  For this reason, in this embodiment, the case where SBS and MVC are used as the 3D video format will be described, but the 3D video format is not limited to SBS and MVC.

  In this embodiment, as a precondition, a plurality of 3D video formats and the number of viewpoints are not mixed in the same content.

  First, the content metadata 430 and series metadata 410 included in the ECG metadata 400 of content will be described.

  FIG. 28 is a configuration example of the content metadata 430 included in the ECG metadata 400.

  The content metadata 430 includes title 431, genre information 432, parental information 433, and information 434 regarding 3D. The title 431 indicates the name of the content, and is “movie 1”, for example. The genre information 432 is information regarding the type of the content, and is, for example, “movie-foreign film / comedy”. The parental information 433 indicates a recommended minimum viewing age of the content, and is “R-18”, for example.

  The 3D information 434 includes 3D / 2D mixed information 4341, a 3D video format 4342, and the number of viewpoints 4343.

  The 3D / 2D mixed information 4341 indicates the mixed state of 3D and 2D of the content, and is “f3d” when the content is a full-length 3D video, and “p3d” when the content is only partly 3D. Information for distinguishing the 3D / 2D mixed situation of the content. In the case of full-length 2D video, the content metadata does not include 3D information 434. However, instead of not including the 3D information 434 in the content metadata, “f2d” may be described in the 3D information 434, and in this case, it is clearer that the entire 2D video is displayed.

  The 3D video format 4342 indicates the 3D video format used in the content. When the 3D video format of the content is “Side by Side format”, the 3D video format 4342 is “SBS”, and the 3D video format of the content is “MVC ( “Multiview Video Coding” format ”is described as“ MVC ”, and is information for distinguishing the 3D video format of the content.

  The number of viewpoints 4343 indicates the number of viewpoints of the 3D video of the content, and is “2” when the number of viewpoints of the content is 2, and “3” when the number of viewpoints of the content is 3. Information for distinguishing the number of viewpoints of the content.

  At this time, if the 3D video format of the content is “Side by Side format”, the number of viewpoints is fixed at “2”, so the number of viewpoints 4343 may not be included in the 3D information 434, Even if the score 4343 is included, there is no need to refer to it.

  Also, when the 3D video format of the content is “MVC (Multiview Video Coding) format”, if the number of viewpoints 4343 is not included in the 3D information 434, the number of viewpoints of the content is the minimum number of viewpoints. It may be “2”.

  The 3D information 434 is included in the content metadata 430 only when the content is fully or partially 3D compatible, and is not included in the content metadata 430 when the content is compatible only with 2D. .

  Also, other information can be added to the content metadata 430 as necessary.

  FIG. 29 is a configuration example of the series metadata 410 included in the ECG metadata 400.

  The series metadata 410 includes a title 411, genre information 412, parental information 413, information regarding 3D 414, and a content ID list 415. The title 411 indicates the name of the series, for example, “movie set”.

  By associating a plurality of contents as one content group called a series by the series metadata 410, the content group can be handled like one content in content search. For example, in the content search, not only the individual content metadata 430 of the content included in the content group but also the series metadata 410 corresponding to the content group is searched, so that the content can be grouped. Searchable. Further, for example, one series can be displayed in the same row as a single content like “movie set 1” in the search result screen 1150 of FIG. 31, and the search result screen 1150 is described later in the third embodiment. In the content purchase screen 1240, the content detail screen 1290, and the local navigation screen 1650, it is also possible to expand and display the contents associated with each other as a series in accordance with a user instruction.

  The genre information 412 is information regarding the type of the series, and is, for example, “movie-foreign film / comedy”. The parental information 413 indicates the recommended minimum viewing age of the series, and is “R-18”, for example.

  The 3D-related information 414 includes 3D / 2D mixed information 4141, a 3D video format 4142, and the number of viewpoints 4143.

  The 3D / 2D mixed information 4141 indicates the mixed status of 3D and 2D of the series. When all the contents of the series are full-length 3D videos, “f3d”, all the contents of the series are only partially 3D. In some cases or when the entire content and part of some content is 2D, it is described as “p3d”, and is information for distinguishing the 3D / 2D mixed status of the series.

  The 3D video format 4142 indicates the 3D video format used in the series. When the 3D video format of the series is “Side by Side format”, the 3D video format 4142 is “MVS ( “Multiview Video Coding” format ”is described as“ MVC ”and is information for distinguishing the 3D video format of the series.

  The number of viewpoints 4143 indicates the number of viewpoints of the 3D video of the series, such as “2” when the number of viewpoints of the series is 2, and “8” when the number of viewpoints of the series is 8. It is information for distinguishing the number of viewpoints of the series.

  At this time, when the 3D video format of the series is “Side by Side format”, since the number of viewpoints is fixed at “2”, the number of viewpoints 4143 may not be included in the 3D information 414, Even if the score 4143 is included, there is no need to refer to it.

  Also, when the 3D video format of the series is “MVC (Multiview Video Coding) format”, if the number of viewpoints 4143 is not included in the 3D information 414, the number of viewpoints of the series is the minimum number of viewpoints. It may be “2”.

  The 3D information 414 is included in the series metadata 410 when the series is all or partly 3D compatible, and is included in the series metadata 410 when all contents of the series are only 2D compatible. exclude. However, similarly to the content metadata 430, it is possible to indicate that the entire content is 2D by describing “f2D” in the 3D / 2D mixed information 4141.

  In general, the information related to 3D of the content group indicated by the series metadata 410 is the same for each content. However, when the information related to 3D is different for each content, a plurality of pieces of information 414 related to 3D of the series metadata 410 are provided. Or, there may be a plurality of 3D / 2D mixed information 4141, 3D video format 4142, and number of viewpoints 4153 of 3D information 414 of the series metadata 410, respectively.

  Also, other information can be added to the series metadata 410 as necessary.

  FIG. 30 is an example of a content search screen 1050 realized by the ECG processing unit 52. Only differences from FIG. 12 will be described.

  The content search screen 1050 includes a search item group “3D” 1007 that is a set of search item choices regarding the 3D / 2D mixing status of content, a search item group “3D format” 1008 of the content 3D video format, When there is a search item group “number of viewpoints” 1009 for the number of viewpoints and the search start 1006 is selected by the user, the ECG processing unit 52 refers to the ECG metadata 400 according to the content of the specified search condition. Search for content that satisfies the search criteria. By accepting input of items necessary for the search in this way, it is possible to specify a search condition for 3D in the search for content. In the present embodiment, a plurality of search items in one search item group are combined with an or condition to form a search condition for each search item group, and the search condition created for each search item group is an and condition. The description will be made assuming that the search conditions for the content search are combined, but the present invention is not limited to this. For example, the content search screen 1050 is provided with means for accepting input for each search keyword and a combination condition (and, or, etc.) of the search keywords, and the search condition is determined by a combination of the input search keyword and the combination condition. It can be specified.

  At this time, the ECG processing unit 52 sets the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410 for the search condition specified by the search item group “3D” 1007. Search the contents satisfying the search condition with reference to the description. Further, the ECG processing unit 52 searches for the search conditions specified by the search item group “3D format” 1008 with reference to the descriptions of the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410. Search for content that meets conditions. Further, the ECG processing unit 52 refers to the description of the number of viewpoints 4343 of the content metadata 430 and the number of viewpoints 4143 of the series metadata 410 for the search conditions specified by the search item group “number of viewpoints” 1009. Search for content.

  The search item “3D” in the search item group “3D” 1007 corresponds to the “f3d” of the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410, and the search item The search item “3D / 2D mixed” of the group “3D” 1007 corresponds to “p3d” of the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410. The search item “2D” in the search item group “3D” 1007 corresponds to the case where the content metadata 430 does not include the 3D information 434 and the series metadata 410 does not include the 3D information 414. ing. That is, when “2D” is selected in the search item group “3D” 1007, the content corresponding to the content metadata 430 not having the information 434 about 3D and the series metadata 410 not having the information 414 about 3D Information indicating the content group corresponding to is displayed on the search result screen 1150 in the same row as each content.

  “SBS” of the search item of the search item group “3D format” 1008 corresponds to “SBS” of the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410, and the search condition of the 3D format 1008 “MVC” corresponds to “MVC” of the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410.

  The numbers in the search item group “number of viewpoints” 1009 correspond to the number of viewpoints 4343 in the content metadata 430 and the number of viewpoints 4143 in the series metadata 410.

  In the content search screen 1050, only “3D” is displayed alongside the check box as the search condition of the search item group “3D” 1007, so that only the 3D video is included can be set as the search condition. In this case, when “3D” is specified as a search item as a search condition, the contents of “f3d” and “p3d” are set as search targets, and when not specified, 2D content and series are set as search targets.

  Further, only “MVC” can be displayed side by side with a check box as a search condition of the search item group “3D format” 1008. When “MVC” is specified as a search condition, “MVC” is not specified as a search target. In this case, it is possible to search only “SBS”.

  Also, when “2D” is specified in the search item group “3D” 1007, the display of the 3D format 1008 and the number of viewpoints 1009 is deleted, or when “SBS” is specified in the search item group “3D format” 1008. It is also possible to delete the display of the score 1009.

  By reducing the display items on the content search screen 1050 as described above, it is possible to reduce processing in the ECG processing unit 52 and to improve visibility on the content search screen 1050.

  FIG. 31 is a display example of the search result screen 1150 displayed by the ECG processing unit 52. Only differences from FIG. 13 will be described.

  The search result screen 1150 includes 3D 1107 which is information on the 3D / 2D mixing status of content.

  3D 1107 corresponds to the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410, and indicates the 3D / 2D mixed status of the content and the series. .

  In the display, “f3d” and “p3d” that are the contents of the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410 may be shown as they are. It may be displayed in an icon format as shown below.

  In FIG. 31, 3D 1107 which is information on the mixing status of 3D / 2D content is illustrated, but the content corresponding to the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410 is illustrated. 3D video format, the number of viewpoints of content corresponding to the number of viewpoints 4343 of the content metadata 430 and the number of viewpoints 4143 of the series metadata 410 may be illustrated, and each information is displayed in an icon format as in 3D1107. May be. Thereby, it becomes possible to provide the user with more detailed information regarding the content.

  In addition, when the content indicates a series in the display of the title 1101, an icon indicating that the content is a series may be added to the head. For example, an icon represented by “S” of “movie set 1” in FIG.

  FIG. 32 is an example of a content purchase screen 1240 displayed by the ECG processing unit 52. Only differences from FIG. 14 will be described.

  The content purchase screen 1240 includes 3D 1211 that is information on the mixed status of 3D / 2D content. 3D 1211 corresponds to the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410, and indicates the 3D / 2D mixed status of the content and the series. .

  In the display, “f3d” and “p3d” that are the contents of the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410 may be shown as they are. It may be displayed in an icon format as shown below.

  Also, in FIG. 32, 3D1211 which is information on the 3D / 2D mixing status of content is shown, but the content corresponding to the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410 is shown. 3D video format, the number of viewpoints of content corresponding to the number of viewpoints 4343 of the content metadata 430 and the number of viewpoints 4143 of the series metadata 410 may be illustrated, and the 3D video format and / or the number of viewpoints may be 3D1211. Similarly, it may be displayed in an icon format. As a result, more detailed information regarding the content can be provided to the user.

  In addition, when the content indicates a series in the display of the title 1201, an icon indicating that the content is a series may be added to the head.

  FIG. 33 is an example of a content detail screen 1290 displayed by the ECG metadata 52. Only differences from FIG. 15 will be described.

  The content purchase screen 1290 includes 3D 1212 that is information on the mixing status of 3D / 2D content, 3D format 1213 that is information on 3D video format of content, and the number of viewpoints 1214 that is information on the number of viewpoints of content.

  The 3D 1212 corresponds to the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410. In the display, “f3d” and “p3d” that are the contents of the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410 may be shown as they are. It may be displayed in an icon format as shown below.

  The 3D format 1213 corresponds to the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410. For display, “SBS” and “MVC”, which are the contents of the 3D video format 4342 of the content metadata 430 and the 3D video format 4142 of the series metadata 410, may be displayed as they are, or may be displayed in an icon format. Good.

  The viewpoint number 1214 corresponds to the viewpoint number 4343 of the content metadata 430 and the viewpoint number 4143 of the series metadata 410. For the display, “2” and “8”, which are the contents of the viewpoint number 4343 of the content metadata 430 and the viewpoint number 4143 of the series metadata 410, may be displayed as they are, or may be displayed in an icon form.

  In addition, in the 3D1212, 3D format 1213, and the number of viewpoints 1214 of the content detail screen 1290, an item that does not correspond to the content is expressed by a double line, but is not supported by the content. If there are items, it is also possible to display only the items that the content supports in the first place. Thereby, it is possible to reduce the processing of the ECG processing unit 52 and improve the visibility on the content search screen 1050.

  FIG. 34 shows a local navigation screen 1650 displayed by the browser 51. Only differences from FIG. 19 will be described.

  The local navigation screen 1650 includes 3D 1607, which is information on the 3D / 2D mixing status of content.

  The 3D 1607 corresponds to the 3D / 2D mixed information 4341 in the content metadata 430 and the 3D / 2D mixed information 4141 in the series metadata 410. In the display, “f3d” and “p3d” which are the contents of the 3D / 2D mixed information 4341 of the content metadata 430 and the 3D / 2D mixed information 4141 of the series metadata 410 may be shown as they are. It may be displayed in an icon format as shown below.

  Also, in FIG. 34, 3D1607, which is information about the 3D / 2D mixing status of content, is illustrated, but content corresponding to 3D video format 4342 of content metadata 430 and 3D video format 4142 of series metadata 410 The number of content viewpoints corresponding to the 3D video format, the number of viewpoints 4343 of the content metadata 430 and the number of viewpoints 4143 of the series metadata 410 may be illustrated. As with 3D 1607, each icon may be displayed in icon format. As a result, more detailed information regarding the content can be provided to the user.

In addition, when the content indicates a series in the display of the title 1601, an icon indicating that the content is a series may be added to the head. For example, an icon indicated by “S” in “movie set 1” in FIG.
According to the above embodiment, the receiver 50 can display information related to 3D of the content at the time of search when purchasing the content or after the purchase, and when the user purchases or views the content. It is possible to confirm information related to 3D of content.

  Further, although the present embodiment has been described using an example at the time of DL service, a service in which a user individually distributes program content such as a movie via a network according to a user instruction, a so-called VOD (Video On Demand) service It is also applicable to.

  In this embodiment, a user uses a service for individually downloading a program content such as a movie via a network according to a user instruction, a so-called DL (Download) service, and 3D video (protruded from a display device by stereoscopic viewing). An example of displaying information related to 3D of chapters included in the content when purchasing content in which 3D video and 2D video (planar video) are mixed or when viewing the purchased content will be described. In the present embodiment, parts different from those in the second embodiment will be mainly described, and the parts not specifically described are the same as those in the second embodiment.

First, the reproduction control metafile 201 including information on the 3D / 2D configuration of the chapter start point content used in the present embodiment will be described with reference to FIG.
FIG. 35 is a configuration example of a playback control metafile 201 in which information related to the 3D / 2D configuration of the content at the chapter start point is added to the playback control metafile 200 of FIG. Differences from FIG. 10 will be described.
The content specific attribute information 209 is obtained by adding chapter information 216 to the content specific attribute information 210 of FIG. Since the chapter information 216 exists in each chapter included in the content, the chapter information 216 is configured in the content specific attribute information 209 by the number of chapters included in the content.
The chapter information 216 includes items such as a chapter number 2161, a chapter title 2162, a thumbnail URL (Uniform Resource Locator) 2163, and a 3D / 2D flag 2164, and other information is used to represent more detailed chapter information. There may be items.
A chapter number 2161 indicates a number indicating the order of the chapters.
A chapter title 2162 indicates a character string of a title which is the name of the chapter.
A thumbnail URL 2163 indicates the URL of thumbnail image data of the chapter. The thumbnail image data is assumed to be in the JPEG (Joint Photographic Experts Group) format, but other image formats may be used. The thumbnail image data may be in 3D format as well as in 2D format. The thumbnail URL 2163 may be video data.

The 3D / 2D flag 2164 indicates the 3D / 2D configuration of the chapter start point of the chapter. When the chapter start point of the chapter is in the 3D format, the 3D / 2D flag 2164 indicates a 3D format such as “3d”. When a character string is stored and the chapter start point of the chapter is in 2D format, a character string indicating a 2D format such as “2d” is stored. Further, when the chapter start point of the chapter is in 2D format, the 3D / 2D flag 2164 may not be included in the chapter information 216.
Next, an example of displaying information related to chapter 3D will be described.

  FIG. 36 is a screen of local navigation 1660 which is a different display method of local navigation screen 1650 displayed by browser 51 shown in FIG. Only differences from FIG. 34 will be described.

The “list” button 1608 is a button that is displayed only for the series displayed with reference to the series metadata 410 among the contents and series displayed in the local navigation 1660. In FIG. 36, since “movie set” is a series, a “list” button 1608 is displayed.
When the “list” button 1608 is selected by the user, the screen shifts to a screen of a local navigation 1670 displaying a content list included in the series shown in FIG. Thereby, it is possible to display a more detailed screen of the series.
FIG. 37 is a screen of local navigation 1670 displaying a list of contents included in the series displayed by browser 51. Only differences from FIG. 34 will be described.
The local navigation 1670 shows a list of contents included in the “movie set” series of FIG. Therefore, in the local navigation 1670, ““ movie set ”series content list” and the like are displayed.
The title 1609 is the title of the content included in the “movie set” series of FIG. 36, and displays the title 431 of the content metadata 430 of the content.
The “chapter” button 1610 is displayed only for content that can be obtained from the content-specific attribute information 209 of the playback control metafile 201 downloaded to the receiver 50 among the content displayed in the local navigation 1670. Button.
In addition, the information on the chapter does not necessarily need to be acquired from the reproduction control metafile 201, and the distribution system 60 such as the reproduction control metafile 201, the Web server 61, the metadata server 62, and the content server 63 in the metadata server 62 is internal. You may acquire from the information preserve | saved in the server of this, and the information hold | maintained inside the receiver 50. Thus, even if the playback control metafile 201 is not downloaded to the receiver 50, the chapter information can be handled by the receiver 50.
When the “chapter” button 1610 is selected by the user, a transition is made to a screen of a local navigation 1680 that displays a list of chapters included in the content shown in FIG. As a result, a more detailed screen of the content can be displayed.
If there is no chapter in the content and chapter information is not available, the “chapter” button 1610 is not displayed.
In the local navigation 1670, since all contents are not series, 3D 1607 corresponds to 3D / 2D mixed information 4341 of content metadata 430.
FIG. 38 shows a screen on the local navigation 1680 displaying chapters included in the content displayed by the browser 51. Only differences from FIG. 34 will be described.
The local navigation 1680 shows a list of chapters included in “movie D”, which is the content in which 3D / 2D is mixed in the 3D video format of FIG. Therefore, in the local navigation 1680, ““ movie set ”-“ movie D ”chapter list” or the like is displayed.
Reference numeral 1611 indicates the order of the chapters, and corresponds to the chapter number 2161 in FIG.
A title 1612 indicates the name of the chapter and corresponds to the title 2162 of the chapter in FIG.
3D 1613 indicates whether the chapter is at the start point of 3D or 2D. If there is a 3D / 2D flag 2164 of the chapter in FIG. 35 and “3d” is described, it is determined that the chapter is in 3D format, and a character string or icon representing 3D format such as “3D” is displayed. indicate. Further, if the chapter 3D / 2D flag 2164 in FIG. 35 is present and “2d” is described or the chapter 3D / 2D flag 2164 in FIG. 35 does not exist, the chapter is displayed in 2D format. It is determined that there is a character string and an icon representing a 2D format such as “2D”, or nothing is displayed.
A thumbnail 1614 indicates a thumbnail video of the chapter, and an image file indicated by the URL 2163 of the chapter thumbnail in FIG. 35 is displayed.
At this time, when the image data indicated by the URL 2163 of the thumbnail of the chapter in FIG. 35 is an image in the 3D format, the image is displayed on the thumbnail 1614 in the 3D format.
Further, even when the image file indicated by the URL 2163 of the thumbnail of the chapter in FIG. 35 is an image in 2D format, if the 3D 1613 of the chapter is in 3D format, the browser 51 of the receiver 50 is displayed. 2D image data may be converted into 3D format and 3D display may be performed. Alternatively, if the chapter is in 3D format and the image data to be displayed as a thumbnail is in 2D format, the browser 51 of the receiver 50 surrounds the thumbnail 1613 of the chapter with a thick frame, or the thumbnail 1613 is stereoscopic. Processing around the thumbnail 1613 may be performed so as to be visible.
The file indicated by the thumbnail URL 2163 may be video data without image data, and the same processing as described above is performed.
FIG. 39 shows a display example of image data of the thumbnail 1613. 39A is an original thumbnail 1613, FIG. 39B is a thumbnail 1613 surrounded by a thick frame, and FIG. 39C is a thumbnail 1613 having a three-dimensional periphery.
In this manner, when the chapter is in 3D format, the thumbnail 1613 is processed, so that it can be easily distinguished from the 2D-format chapter thumbnail 1613, and the user can distinguish between the 3D-format chapter and the 2D-format chapter. It becomes easy.
Furthermore, character strings and icons other than the thumbnails described above may be displayed in the browser 51 of the receiver 50 after being changed to the 3D format. As a result, the user can easily distinguish between the 2D format and the 3D format of series, content, and chapter.
Further, although the present embodiment has been described using an example at the time of DL service, a service in which a user individually distributes program content such as a movie via a network according to a user instruction, a so-called VOD (Video On Demand) service It is also applicable when displaying series, content, and chapters on the network.

  In this embodiment, the local navigation screen displayed by the browser 51 has been described. However, similar processing can be performed on the search result screen by the ECG processing unit 52. When the “list” button 1608 of the series is displayed on the search result screen by the ECG processing unit 52 and the selection of the “list” button 1608 is accepted by the user, the series content list screen similar to the local navigation screen 1670 of FIG. It can be displayed by the unit 52. Further, by using the chapter information 216 of the reproduction control metafile or by acquiring information about chapters by another method described in the third embodiment, in the content list screen by the ECG processing unit 52, FIG. A “chapter” button 1610 may be provided as in the local navigation screen, and a chapter list screen similar to the local navigation screen 1680 in FIG. 38 may be displayed by the ECG processing unit 52 upon user selection.

  The local navigation screens 1660 and 1670 may be provided with an “export” button for each video content as in the local navigations 1600 and 1650. The processing after accepting the selection by the user from any of the “detail” button, “purchase” button, “view” button, and “export” button on the local navigation screens 1660, 1670, and 1680 is the same as that in the first embodiment. This is the same as the corresponding processing after each button is selected in Example 2. In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. In addition, a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of a certain embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a recording device such as a memory, a hard disk, an SSD (Solid State Drive), or a recording medium such as an IC card, an SD card, or a DVD.

  Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. Actually, it may be considered that almost all the components are connected to each other.

50 Receiver 51 Browser 52 ECG Processing Unit 53 AV Player 55 Downloader 57 Stream Output Control Unit 60 Distribution System 100 Download Control Information 200 Playback Control Metafile 300 License 400 ECG Metadata 550 Storage 560 Removable Media 570 Network Connection Device

Claims (2)

A downloader that receives video content and metadata describing the video content and attribute information of the video content in association with each other via a network, and stores the metadata in a recording medium;
A user operation unit that receives input of items used for searching for stereoscopic video content;
Analyzing the metadata stored in the recording medium to obtain stereoscopic video content information related to stereoscopic video content, and identifying video content having an attribute corresponding to the input item based on the obtained stereoscopic video content information A metadata processing unit,
Means for displaying a list of the identified video content;
A content receiver comprising: In a content receiving method for receiving video content and metadata describing the video content and attribute information of the video content in association with each other via a network and storing the metadata in a recording medium,
Accepts input for items used to search for stereoscopic video content,
Analyzing the metadata stored in the recording medium to obtain stereoscopic video content information regarding stereoscopic video content,
Based on the acquired stereoscopic video content information, identify video content having an attribute corresponding to the input item,
Displaying the identified video content;
A content receiving method comprising:

Images