WO2011145157A1 - Content receiver, content usage system, viewing deadline establishment method, program, and recording medium - Google Patents
Content receiver, content usage system, viewing deadline establishment method, program, and recording medium Download PDFInfo
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- WO2011145157A1 WO2011145157A1 PCT/JP2010/006749 JP2010006749W WO2011145157A1 WO 2011145157 A1 WO2011145157 A1 WO 2011145157A1 JP 2010006749 W JP2010006749 W JP 2010006749W WO 2011145157 A1 WO2011145157 A1 WO 2011145157A1
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- Prior art keywords
- content
- viewing
- license
- time limit
- viewing time
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 70
- 238000010200 validation analysis Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 description 48
- 238000012545 processing Methods 0.000 description 22
- 238000010586 diagram Methods 0.000 description 15
- 230000001360 synchronised effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 238000012790 confirmation Methods 0.000 description 5
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- 238000007792 addition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 238000011069 regeneration method Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4627—Rights management associated to the content
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91321—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy protection control signal, e.g. a record inhibit signal
Definitions
- the present invention relates to a content receiver, a content use system, a viewing time limit determination method, and the like, in which encrypted content managed for viewing time limit is copied from a content receiver to a replaceable medium, and played back on a replay device of the replaceable medium.
- encrypted content managed for viewing time limit is copied from a content receiver to a replaceable medium, and played back on a replay device of the replaceable medium.
- a content provider that supplies content operates a content server and a DRM server, and a content receiver on the viewer side downloads encrypted rental content from the content server,
- the decryption key for the encrypted content and the viewing conditions for the content are acquired from the DRM server.
- the content viewing conditions include viewing time limit information for permitting viewing of the content, content duplication conditions, and the like.
- the content receiver When playing the rental content, the content receiver refers to the viewing time limit specified by the DRM server. If the viewing time limit has not been exceeded, the content receiver starts playing the content, and if the viewing time limit has been exceeded, Perform content deletion.
- the content receiver may write the rental content to a replaceable medium such as an SD card together with the viewing deadline.
- the SD card playback terminal tried to play the rental content or finished playback.
- the viewing time limit of the content is inspected, and if the viewing time limit is exceeded, the content is deleted.
- Patent Document 1 As a method for reproducing this type of content with a viewing time limit, there is a method described in Patent Document 1, for example.
- FIG. 17 is a sequence diagram in a case where a terminal that has downloaded content from a server moves content in order to view the content on another terminal in conventional content download as described in Patent Document 1. .
- the download terminal 601 can view the content by accumulating the content distributed from the server 600 and acquiring a viewing license for the content from the server 600.
- the content itself may be moved (moved) from the download terminal 601 to the viewing terminal 602, but the viewing license is linked to the download terminal 601 on the server 600. Therefore, the viewing terminal 602 reacquires a viewing license from the server 600 in order to enable viewing on another viewing terminal 602.
- a viewing license with a viewing deadline that is granted in a form in which the reproduction permission conditions for the target content are specified by an absolute date and time, and a viewing deadline when performing the first viewing on the terminal There is a viewing license with a viewing period in which an absolute date and time is not designated and only a viewable period such as 48 hours is designated.
- the terminal that plays the content does not acquire a viewing license from the server 600 again and starts playing the content for the first time.
- the date and time 48 hours after that time is determined and set as the viewing time limit for the content.
- rental sales as a rental content sales form.
- This is a form in which, for example, all 12 episodes of a drama are rented and sold as one content group, that is, a package, and provided at a lower price than purchasing 12 episodes individually.
- the viewing deadline is generally unified throughout the pack content. Specifically, after downloading 12 pieces of content, if viewing of any one of them starts, the viewing deadline for all 12 pieces is set to the same date and time.
- rental content for which the viewing deadline is not fixed (rental content with a viewing license with a viewing period) is written to a replaceable medium such as an SD card and viewed on a portable terminal or the like.
- a replaceable medium such as an SD card
- the viewing time limit for that pack has been finalized. It can be secured.
- the rental content that must share the viewing deadline is stored in a physically separate storage medium. Since each is stored, the viewing deadline is set separately at the first viewing time, and the viewing deadline cannot be synchronized.
- FIG. 18 is a sequence diagram when the download terminal 601 that has received the pack rental content from the server 600 writes out a part of the pack content to the SD card 606 and views the content on the SD card 606 with the viewing terminal 602. It is.
- the viewing time limit of all the contents of C1 to C12 is not fixed.
- the viewing period is specified such that 48 hours of viewing is possible after viewing. In this state, when the contents of C1 to C5 are written to the SD card 606, the contents to share the viewing deadline exist separately on the SD card 606 and the download terminal 601.
- the same problem occurs even in the case of one content, when the content is copied and written on a replaceable medium such as the SD card 606 while the content remains on the download terminal 601. . That is, when a copy of the content whose viewing time limit has not been determined is written to the SD card 606, the viewing time limit of the content left on the download terminal 601 is determined when the content is played back on the download terminal 601 while being written to the SD card 606. Since the viewing time limit of the content is determined when the content is played back on the viewing terminal 602, a different viewing time limit is set for one content.
- the present invention in consideration of the above-described conventional problems, even when some contents of a plurality of contents that should have the same viewing deadline are written on a replaceable medium before the viewing deadline is determined, the plurality of contents It is an object of the present invention to provide a content receiver, a content use system, a viewing time limit determining method, and the like that can synchronize the viewing time limit.
- the first aspect of the present invention provides: A content receiver that receives content managed for a viewing time limit from a content server and writes the content to a replaceable medium, A license invalidation validating unit for invalidating and validating a viewing license; and writing / reading the content and the viewing license of the content to the replaceable medium and reading at least the view license written in the replaceable medium A viewing deadline setting unit for setting a viewing deadline, and a control unit,
- the controller is When the content is written to the replaceable medium by the replaceable medium read / write unit before the content is played, the content viewing license is written to the replaceable medium together with the content viewing time limit.
- the license invalidation validating unit invalidates the viewing license of the related content belonging to the same predetermined content group as the content
- the viewing time limit setting is performed.
- the content receiver sets the viewing time limit of the related content to the same time limit as the viewing time limit of the content, and makes the viewing license of the related content valid by the license invalidation validating unit.
- the second aspect of the present invention A transmission / reception unit that transmits / receives data to / from a license server that supplies the viewing license;
- the content according to the first aspect of the present invention wherein when the viewing time limit setting unit sets the viewing time limit of the related content, the control unit causes the transmission / reception unit to notify the license server of the set viewing time limit. It is a receiver.
- the control unit causes the transmission / reception unit to notify the license server of the set viewing deadline only when there is content belonging to the predetermined content group that has not yet been downloaded from the content server. It is a content receiver of the present invention.
- the fourth aspect of the present invention is The controller is When the related content is played when the exchangeable medium in which the viewing license for the content whose viewing deadline has not yet been confirmed is loaded, the license invalidation validating unit validates the viewing license for the related content In addition, the viewing time limit of the related content is determined by the viewing time limit setting unit, and the viewing time limit of the content recorded on the exchangeable medium is set to the same time limit as the determined viewing time limit of the related content.
- the content receiver according to the first aspect of the present invention.
- the fifth aspect of the present invention provides The license invalidation validating unit invalidates the viewing license of the related content whose viewing deadline has not yet been determined, is to discard the viewing license of the related content,
- the content receiver according to the first aspect of the present invention wherein when the control unit validates the viewing license of the related content that has been discarded, the license invalidation validation unit reacquires the viewing license of the related content from a license server. It is.
- the sixth aspect of the present invention provides A content use system comprising: a content receiver that receives content whose viewing deadline is managed from a content server and writes the content to a replaceable medium; and a content player that reproduces the content recorded on the replaceable medium Because
- the content receiver includes a license invalidation validating unit that invalidates and validates a viewing license, writes the content and the viewing license of the content to the replaceable medium, and at least the view license written in the replaceable medium
- An exchangeable medium read / write unit for reading the content, a viewing time limit setting unit for setting a viewing time limit, and a control unit, When the control unit writes the content to the replaceable medium by the replaceable medium read / write unit before reproducing the content, the control unit writes the viewing license of the content to the replaceable medium, and When the viewing time limit of the content is undecided, the license invalidation validating unit invalidates the viewing license of related content belonging to the same predetermined content group as the content, When playing back the content recorded on the interchangeable medium, the content player sets
- a viewing time limit determining unit to be confirmed, and a viewing license writing unit for recording the viewing license of the content in which the determined viewing time limit is set in the replaceable medium When the content recorded on the replaceable medium is played back by the content player and the replaceable medium is attached to the content receiver, the control unit causes the viewing time limit setting unit to store the related content.
- the viewing deadline is set to the same deadline as the content viewing deadline, and the license invalidation validating unit validates the viewing license of the related content.
- a content use system comprising: a content receiver that receives content whose viewing deadline is managed from a content server and writes the content to a replaceable medium; and a content player that reproduces the content recorded on the replaceable medium Is a method for determining the viewing deadline of the content of
- the content receiver writes the content to the replaceable medium before playing the content
- the content receiver writes the content viewing license together with the replaceable medium, and the viewing time limit of the content is uncertain
- the viewing time limit is determined by setting the current time as the start time, and the determination is made.
- the eighth aspect of the present invention when the content receiver writes the content to the replaceable medium before playing the content, the content viewing license is written to the replaceable medium when the content receiver writes the content to the replaceable medium.
- the viewing time limit of the content is uncertain
- the content writing step of invalidating the viewing license of the related content belonging to the same predetermined content group as the content, and the content player After playing the content, when the replaceable medium is loaded in the content receiver, the viewing time limit of the related content is set to the same time limit as the viewing time of the content and the viewing license of the related content is valid
- a program for causing a computer to execute the viewing deadline synchronization step It is a non.
- the ninth aspect of the present invention provides A content receiver that receives content managed from a viewing time limit from a content server, stores the content, and copies the content to a replaceable medium, A license invalidation validating unit for invalidating and validating the viewing license of the stored content, and copying the stored content to the replaceable medium, and a viewing license for the copied content on the replaceable medium
- a removable medium read / write unit that reads at least the viewing license written in the replaceable medium, a viewing time limit setting unit that sets a viewing time limit, and a control unit, The controller is When the stored content is copied to the replaceable medium by the replaceable medium read / write unit before the stored content is reproduced, the viewing license of the copied content is also written to the replaceable medium.
- the license invalidation validating unit invalidates the stored content viewing license
- the interchangeable medium on which the viewing license of the copied content in which the viewing time limit determined by the content player reproducing the copied content written on the interchangeable medium is reproduced is loaded.
- the viewing time limit of the stored content is set to the same time limit as the viewing time of the copied content by the viewing time limit setting unit, and the viewing license of the stored content is set by the license invalidation validating unit. This is a content receiver to be activated.
- the tenth aspect of the present invention is The controller is When the stored content is played back when the exchangeable medium in which the viewing license of the copied content whose viewing time limit has not been determined is loaded is stored by the license invalidation validating unit. Validating the viewing license of the content, confirming the viewing time limit of the stored content by the viewing time limit setting unit, and setting the viewing time limit of the copied content to the same time limit as the confirmed viewing time limit, It is a content receiver of 9th this invention.
- the eleventh aspect of the present invention is The license invalidation validating unit invalidates the viewing license of the stored content whose viewing deadline is undecided is to discard the viewing license of the stored content,
- the license invalidation validation unit reacquires the viewing license for the stored content from a license server. Is a content receiver.
- the twelfth aspect of the present invention is A content receiver that receives content managed from the viewing deadline from a content server, stores the content and copies it to a replaceable medium, and a content player that plays back the copied content recorded on the replaceable medium
- a content use system comprising: The content receiver invalidates and validates a viewing license of the stored content, copies the stored content to the replaceable medium, and copies the copy on the replaceable medium
- the control unit also combines the viewing license of the copied content with the viewable license.
- the license invalidation validating unit invalidates the stored content viewing license
- the content player when reproducing the copied content recorded on the interchangeable medium, sets the current time as the start time if the viewing time limit of the copied content is uncertain
- the control unit sets the viewing time limit by the viewing time limit setting unit.
- a content use system that sets a viewing time limit for stored content to the same time limit as a viewing time limit for the copied content, and enables a license for validating the stored content by the license invalidation validating unit. .
- the thirteenth aspect of the present invention is A content receiver that receives content managed from the viewing deadline from a content server, stores the content and copies it to a replaceable medium, and a content player that plays back the copied content recorded on the replaceable medium
- a method for determining the viewing deadline of content in a content usage system comprising: When the content receiver copies the stored content to the replaceable medium before reproducing the stored content, the content receiver writes the viewing license for the copied content to the replaceable medium.
- a content writing step of invalidating the viewing license of the stored content when the viewing time limit of the copied content is uncertain;
- the content player reproduces the copied content recorded on the replaceable medium if the viewing time limit of the copied content is uncertain, the current time is set as the start time.
- a viewing time limit determining step for determining a viewing time limit of the copied content, and recording a viewing license of the copied content in which the confirmed viewing time limit is set on the replaceable medium;
- the viewing time limit of the stored content is the same as the viewing time limit of the copied content.
- a viewing deadline determination method including a viewing deadline synchronization step for setting a deadline and validating a viewing license for the stored content.
- the fourteenth aspect of the present invention is according to a thirteenth aspect of the present invention, when the content receiver copies the stored content to the replaceable medium before reproducing the stored content, the content receiver The content writing step of writing a viewing license together with the interchangeable medium, and invalidating the viewing license of the stored content when the viewing time limit of the copied content is uncertain, and the content After the reproducing device reproduces the copied content, when the replaceable medium is loaded into the content receiver, the viewing time limit of the stored content is set to the same time limit as the viewing time of the copied content.
- the viewing deadline synchronization process for setting and validating the viewing license for the stored content Tsu is a program to be executed by the up to a computer.
- the fifteenth aspect of the present invention provides A recording medium on which the program of the eighth or fourteenth aspect of the present invention is recorded, and is a recording medium that can be processed by a computer.
- the viewing time limits of the plurality of contents can be synchronized.
- a content receiver, a content use system, a viewing time limit determining method, and the like can be provided.
- A A schematic diagram showing a viewing license with a viewing time limit including information on a confirmed viewing time limit in each embodiment of the present invention.
- B Information on an undecided viewing time limit in each embodiment of the present invention.
- C A schematic diagram showing a viewing license with a viewing time limit including information on a confirmed viewing time limit in each embodiment of the present invention,
- d a schematic diagram showing a viewing license with a viewing period included, and
- each embodiment of the present invention A schematic diagram showing a viewing license with a viewing time limit including information on a confirmed viewing time limit in each embodiment of the present invention.
- FIG. 1 is a block diagram of a content use system according to Embodiment 1 of the present invention.
- a download terminal 903 is connected to the content server 901 and the license server 902 via the Internet (not shown).
- the network IF 904 of the download terminal 903 downloads the encrypted content from the content server 901 connected via the Internet, stores the content in the storage medium 915 such as an HDD as the content 905 and 906, and downloads the content 905 and 906. Are downloaded from the license server 902 and stored as a download content list 800.
- control unit 916 controls the reproduction unit 907 to download the license of the target content to the download content list
- the content is read from 800, the viewing condition is confirmed, the content decryption key is set in the decryptor 908, and the encrypted content 905 and 906 are read and decryption / reproduction is started.
- the playback unit 907 obtains the viewing deadline of the target content from the download content list 800 and compares it with the current time obtained from the clock 919 to determine whether the viewing deadline has been exceeded. If the time limit has not been exceeded, the content is determined to be reproducible and decrypted / reproduced.
- control unit 916 controls the SD card read / write unit 910 in accordance with an instruction (not shown) from the user to record a part or all of the accumulated contents 905 and 906 on the SD card 911, and The download content list 801 related to the content of the file is recorded on the SD card 911, or data is read from the SD card 911.
- the download terminal 903 corresponds to an example of the content receiver of the present invention
- the SD card 911 corresponds to an example of a replaceable medium of the present invention
- the network IF 904 corresponds to an example of the transmission / reception unit of the present invention
- the SD card read / write unit 910 corresponds to an example of the exchangeable medium read / write unit of the present invention.
- the SD card 911 in which the content 906 is written by the download terminal 903 is inserted into the viewing terminal 960, and the playback control unit 923 selects any of the contents 906 on the SD card 911 according to an instruction (not shown) from the user.
- the download content list 801 is read from the SD card 911 into the time limit determining unit 921.
- the playback control unit 923 acquires the content decryption key from the download content list 801 and sets it in the decrypter 924 according to the determination result acquired from the time limit determination unit 921, and also stores the encrypted content 906 in the SD card. Reading / reading by the read / write unit 920 starts decoding / playback.
- the time limit determining unit 921 acquires the viewing time limit information of the target content from the download content list 801 and compares it with the current time acquired from the clock 922 to determine whether the viewing time limit has been exceeded. If the viewing time limit has not been exceeded, it is determined that the content is reproducible. If the viewing time limit has been exceeded, it is determined that the content is not reproducible, and the determination result is notified to the playback control unit 923.
- the viewing terminal 960 corresponds to an example of the content player according to the present invention.
- the time limit determining unit 921 is an example of the viewing time limit determining unit of the present invention
- the SD card read / write unit 920 is an example of the viewing license writing unit of the present invention.
- the license transmission unit 913 returns a license corresponding to the designated content to the download terminal 903.
- the request receiving unit 912 receives a license request including a request for determining the viewing time limit (request for a license with a viewing time limit)
- the viewing time limit setting / determining unit 914 determines the viewing time limit of the specified content. Then, the license transmission unit 913 returns a license in which the confirmed viewing time limit is set to the download terminal 903.
- FIG. 2 is a diagram showing a viewing license and a writing license that the license server 902 supplies to the download terminal 903 in the first embodiment.
- FIG. 2A shows a viewing license 700 with a viewing time limit, which includes information on the confirmed viewing time limit.
- FIG. 2B shows a viewing license with a viewing period 701, which includes information on an undetermined viewing time limit.
- FIG. 2C shows a writing license 710 with a viewing time limit, which includes information on the confirmed viewing time limit.
- FIG. 2D shows a writing license 712 with a viewing period, which includes information on an undetermined viewing time limit.
- the viewing license with viewing deadline 700 is a license type 713 indicating that the license has a viewing deadline, a content ID 705 that is an identifier of the target content, a pack ID 714 that is a group identifier of the pack content, and a decryption key 702 for decrypting the encrypted content.
- the viewing license with viewing period 701 has the same configuration, but there is a difference in whether or not significant values are entered in the viewing period 703, the viewing period start and the viewing period end.
- the media type 711 indicating the media that can be written with this license is added to the export license with viewing time limit 710 and the export license with viewing period 712.
- the same pack ID 714 is assigned to each pack content belonging to the same content group. As described above, since the same viewing time limit must be set for pack contents belonging to the same content group, the same viewing time limit must be set for content assigned with the same pack ID 714.
- content 905 and content 906 are content having the same pack ID 714.
- the contents 906 are written to the SD card 911 and the contents 905 are left in the download terminal 903.
- the content 906 in the first embodiment is an example of content to be written on a replaceable medium of the present invention
- the content 905 is an example of related content of the present invention.
- the contents 905 and 906 having the same pack ID correspond to an example of contents belonging to the same predetermined content group of the present invention.
- FIG. 3 shows a download content list 800 which is a specific form of the viewing license stored in the download terminal 903 in the first embodiment.
- download content list 800 information included in the viewing license acquired when content is downloaded from the content server 901 is described for each content.
- the valid / invalid flag 808 of the download content list 800 is a flag indicating whether or not the viewing license is available.
- the viewing license state setting unit 917 sets the validity / invalidity of the valid / invalid flag 808 in accordance with an instruction from the control unit 916.
- the viewing license state setting unit 917 corresponds to an example of a viewing license invalidation validating unit of the present invention.
- FIG. 4 shows a download content list 801 which is a specific form of the viewing license written in the SD card 911 in the first embodiment.
- the download content list 801 is the same as the download content list 800 except for the presence / absence of the valid / invalid flag 808.
- download content list 801 is an example of a viewing license written on the exchangeable medium of the present invention.
- FIG. 5 is a flowchart of viewing license registration processing when the download terminal 903 of the first embodiment acquires viewing licenses for the contents 905 and 906 stored in the storage medium 915.
- FIG. 6 is a flowchart of the writing process when the download terminal 903 of the first embodiment writes the pack content 906 stored in the storage medium 915 to the SD card 911.
- FIG. 7 is a flowchart of the viewing start process when the pack content 905 stored in the storage medium 915 is played on the download terminal 903 in the first embodiment.
- FIG. 8 is a flowchart of the viewing start process when the viewing terminal 960 views the pack content 906 recorded on the SD card 911 in the first embodiment.
- FIG. 9 is a flowchart of the viewing license grant process in the license server 902 of the first embodiment.
- FIG. 10 is a flowchart of the writing license grant process in the license server 902 of the first embodiment.
- FIG. 11 is a flowchart of viewing time limit synchronization processing when the SD card 911 is inserted into the download terminal 903 in the first embodiment.
- the control unit 916 acquires the viewing license with viewing period 701 from the license server 902 using the network IF 904 (step S821), and pack ID 714, viewing period 703, and the like described in the obtained viewing license with viewing period 701.
- the decryption key 702 is added as an entry of the download content list 800 together with the content ID 705 (step S822), and the valid / invalid flag 808 of the entry is set to “valid” (step S823).
- control unit 916 of the download terminal 903 follows the flow shown in FIG. Control playback.
- the control unit 916 When receiving a playback instruction for the content 905 downloaded and stored in the storage medium 915 (not shown) from the user, the control unit 916 first searches the download content list 800 by the viewing license state setting unit 917, The setting of the valid / invalid flag 808 is confirmed (step S861). In this case, since the content having the same pack ID has not been written to the SD card 911, the valid / invalid flag 808 remains set to “valid” in step S823 in FIG. 5, and then the process in step S863 is performed. Is called.
- control unit 916 causes the viewing time limit setting unit 918 to search the download content list 800 and confirms whether or not the viewing time limit of the content has been determined (step S863). In this case, since the content is viewed for the first time, the viewing time limit has not been determined, and the process of step S864 is performed next.
- the control unit 916 acquires the viewing license 700 with the viewing time limit of the content from the license server 902 using the network IF 904 (step S864), and describes the viewing license 700 with the viewing time limit obtained by the viewing time setting unit 918.
- the values of the viewing deadline start and the viewing deadline end set as the viewing deadline 704 are entered in the corresponding area of the download content list 800.
- the viewing time limit setting unit 918 searches the download content list 800 for content having the same pack ID as the content, and performs the same processing for all corresponding content. That is, the same viewing time limit 704 value is set for all contents having the same pack ID as the content (step S865). In this case, since the viewing license 700 with the viewing time limit of the content 905 is acquired and the viewing time limit of the content 905 is determined, the viewing time limit of the content 906 having the same pack ID as the content 905 is the same as the determined content 905. A viewing time limit is set.
- the control unit 916 includes the playback unit 907.
- the content 905 is decrypted and reproduced using the viewing license (step S868).
- the license server 902 that has received the request for the viewing license with viewing time limit confirms and confirms the viewing time limit of the requested content according to the flow shown in FIG. 9, and includes the viewing time limit information (viewing time limit 704).
- the viewing license 700 is returned to the download terminal 903.
- the viewing time limit setting / determining unit 914 requests to confirm the viewing time limit for the content specified in the viewing license request with the viewing time limit. It is checked from its own history information (not shown) based on the content ID whether or not the viewing license request including “” is received for the first time (step S840).
- the viewing license request with a viewing time limit at this time is reception of a license request including a request for finalizing the viewing time limit for the first time.
- the viewing time limit of the target content may already be determined.
- the viewing deadline setting / determining unit 914 sets the current time as the viewing deadline start time and viewing at the viewing deadline start time. By adding the period and calculating the viewing deadline end time, the viewing deadline for the content is determined (step S841). At this time, the same viewing time limit is similarly determined for all contents having the same pack ID as the content (step S842).
- the license transmission unit 913 returns the viewing license 700 with the viewing time limit including the confirmed viewing time limit 704 to the download terminal 903 (step S843).
- the viewing license with viewing time limit 700 including the confirmed viewing time limit 704 is returned to the download terminal 903 (step S843).
- the control unit 916 of the download terminal 903 reads / writes the SD card according to the flow shown in FIG. The writing by the unit 910 is controlled.
- the control unit 916 first determines whether or not the viewing time limit of the target content to be written has been determined (step S857).
- the control unit 916 causes the viewing time limit setting unit 918 to determine whether or not the viewing time limit has been determined based on the information on the viewing period 703 and the viewing time limit 704 of the download content list 800.
- the viewing time limit of the target content 906 to be written is determined in step S865 in FIG.
- the write license is acquired from the license server 902 using the network IF 904 (step S858).
- control unit 916 causes the SD card reading / writing unit 910 to perform writing processing to the SD card 911 using the writing license (step S853).
- the value of the download content list 800 is copied to each area of the download content list 801 written to the SD card 911.
- the viewing terminal 960 performs playback control of the content 906 on the SD card 911 according to the flow shown in FIG.
- the expiration date determining unit 921 determines whether the viewing time limit of the target content is determined. Whether or not is determined (step S871).
- the time limit determining unit 921 reads the download content list 801 recorded on the SD card 911 by the SD card read / write unit 920, and the viewing time limit is determined based on the information on the viewing period 703 and the viewing time limit 704 of the target content. Determine whether or not.
- the time limit determining unit 921 next exceeds the viewing time limit. It is determined whether it is not (step S874).
- the time limit determining unit 921 compares the determined viewing time limit 704 of the target content acquired from the download content list 801 with the current time acquired from the clock 922, determines whether the viewing time limit has already been exceeded, and the determination result Is notified to the reproduction control unit 923.
- the playback control unit 923 deletes the content 906 (step S875). If the viewing time limit has not been exceeded, the playback control unit 923 starts decoding / playback of the content 906 (step S876).
- the same pack ID is obtained when the content 906 is reproduced on the download terminal 903. Since the same viewing deadline as the content 905 reproduced as the viewing deadline of the content 906 is set (step S865), the viewing deadline of the content 906 written to the SD card 911 can be synchronized thereafter.
- the viewing license registration process for the contents 905 and 906 performed after the download is completed is the same as the process described using the flow of FIG.
- the content is downloaded from the content server 901 and stored in the storage medium 915. Any content 905, 906 having the same pack ID at the download terminal 903 has not been played yet, and has the same pack ID.
- the control unit 916 of the download terminal 903 controls the writing according to the flow shown in FIG.
- control unit 916 When the control unit 916 receives a pack content write request instruction from the user (not shown), the control unit 916 first determines whether or not the viewing time limit of the target content 906 to be written is fixed (step S857). In this case, since the contents 905 and 906 having the same pack ID as the target content 906 to be written have not been played on the download terminal 903 yet, the viewing time limit of the content 906 is unconfirmed, and then in step S850. Process.
- the control unit 916 sets the valid / invalid flag 808 of the target content 906 to be written to “invalid” by the viewing license state setting unit 917 (step S850), and among the contents that are not to be exported, The valid / invalid flag 808 of the content 905 having the same pack ID as the target content 906 to be written is also set to “invalid” (step S851).
- control unit 916 sends a write license request for the content to be written 906 to the license server 902, obtains a write license from the license server 902 (step S852), and writes to the SD card 911 using the write license. Take control.
- control unit 916 uses the SD card read / write unit 910 to change the target content without changing the download content list 800. Control is performed to write to the SD card 911 (step S853).
- step S854 If the export license acquired in step S852 is the export license 710 with a viewing time limit (step S854), the confirmed viewing time limit 704 is set, so the control unit 916 creates a target to be written in the download content list 800.
- the valid / invalid flag 808 of the content 906 is changed to “valid” by the viewing license status setting unit 917 (step S855), and the valid / invalid flag 808 of the content 905 having the same pack ID 714 as the target content 906 to be written is also “ It is changed to “valid” (step S856).
- control unit 916 uses the viewing time limit setting unit 918 to set the viewing time limit 704 of the content 905 having the same pack ID 714 as the target content 906 to be written to the confirmed viewing time limit set in the writing license 710 with a viewing time limit.
- the same viewing time limit as that of 704 is set (step S859).
- the license server 902 When the license server 902 receives a write license request from the download terminal 903, the license server 902 performs a write license grant process according to the flow of FIG.
- the viewing time limit setting / determining unit 914 retrieves from its own history information (not shown) whether or not the viewing time limit of the content has already been confirmed. (Step S845).
- the license transmission unit 913 returns the write license 710 with viewing time limit in which the confirmed viewing time limit is set to the download terminal 903 (step S846), and the viewing time limit has not been reached. If confirmed, the writing license with viewing period 712 with the viewing deadline being unconfirmed is returned to the download terminal 903 (step S847).
- the export license acquired in step S852 is the export license with viewing period 712, that is, the content 906 written to the SD card 911 has been written without being confirmed.
- the control unit 916 displays the flow in FIG. First, the setting of the valid / invalid flag 808 of the content to be played 905 is confirmed (step S861).
- step S851 Since the valid / invalid flag 808 of the reproduction target content 905 remains set to “invalid” in step S851, the control unit 916 ends without permitting reproduction of the reproduction target content 905 (step S862).
- the viewing terminal 960 performs playback control of the content 906 on the SD card 911 according to the flow shown in FIG.
- the reproduction control unit 923 When the reproduction control unit 923 is instructed to reproduce the content 906 recorded on the SD card 911 by an instruction (not shown) from the user, first, the expiration date determining unit 921 first displays the content column of the download content list 801. To determine whether or not the time limit for viewing the content 906 has been determined (step S871).
- step S871 since the target content 906 is written to the SD card 911 with the viewing deadline being undetermined, it is determined in step S871 that the viewing deadline is undetermined.
- the time limit determining unit 921 acquires the current time from the clock 922, sets the current time as the viewing time limit start time, and adds the viewing time period 703 to the viewing time limit start time. Then, the viewing deadline 704 is determined by calculating the viewing deadline end time, and these numerical values are written in the download content list 801 (step S872), and the content having the same pack ID 714 as the content 906 is downloaded. The above search is performed, and the same processing is performed for all corresponding contents (step S873).
- the reproduction control unit 923 starts decrypting / reproducing the content 906 using the decryption key 702 described in the download content list 801 (step S876).
- the download terminal 903 When the SD card 911 is inserted, the download terminal 903 performs viewing time limit synchronization processing according to the flow shown in FIG.
- the viewing time limit setting unit 918 refers to the download content list 801 on the SD card 911 and sets the pack ID 714.
- Content hereinafter referred to as content CA
- content 906 is extracted as content CA.
- the viewing deadline setting unit 918 refers to the download content list 800 and whether there is content having the same pack ID 714 (content CB). Is confirmed (step S883). In this case, content 905 is extracted as content CB.
- control unit 916 causes the viewing license state setting unit 917 to confirm the state of the valid / invalid flag 808 of the content CB (step S884).
- the control unit 916 sets the viewing deadline set for the content CA by the viewing deadline setting unit 918 as the viewing deadline for the content CB (downloaded content list) 800 (step S885). Then, the viewing license status setting unit 917 changes the valid / invalid flag 808 of the content CB to “valid” (step S886).
- the SD card 911 is mounted. If not, playback of the content 905 having the same pack ID as the content 906 taken out on the SD card 911 in the download terminal 903 is prohibited, and the same as the content 906 on the SD card 911 when the SD card 911 is attached. Since the viewing deadline is set and reproduction is permitted, the viewing deadlines of the contents 905 and 906 having the same pack ID on the download terminal 903 and the SD card 911 can be synchronized.
- step S863 when the content 905 stored in the storage medium 915 is played back, the case where the valid / invalid flag 808 is “invalid” and the viewing deadline has not been explained in the flow of FIG. However, if the viewing time limit has been determined in step S863, the processing from step S866 is performed. Since the viewing time limit is set in step S864 at the time of the first playback, for example, in the case of the second or subsequent playback of the same content, it is determined in step S863 that the viewing time limit has been fixed.
- step S866 the playback unit 907 compares the viewing time limit 704 of the download content list 800 with the current time acquired from the clock 919, and deletes the content if the viewing time limit has passed (step S867). ). If the viewing time limit has not been exceeded, decryption / playback of the content is started (step S868).
- the content in the download terminal having the same pack ID as the content is set to the non-viewable state, and the SD card is inserted into the download terminal.
- Packs that are stored separately on the download terminal and the SD card by setting the viewing deadline for the content having the same pack ID as the content whose viewing deadline is confirmed and canceling the viewing disabled state. Since the viewing time limit is set for the content based on the time when the user first viewed one of the pack contents, the time synchronization of the pack content can be guaranteed.
- the SD card read / write unit 910 records the license (download content list 801) related to the content 906 on the SD card 911.
- the license instead of recording the license, other copyrights are recorded. It may be converted into the parameter format of the protection method and written.
- the content can be flexibly used by writing in a copyright protection system that is easy to process by the viewing terminal 960, such as a low CPU processing load, a small memory usage, and a high reproduction compatibility.
- the viewing license and the writing license shown in FIG. 2 are merely examples, and do not prescribe the content description and configuration of the license.
- the viewing license registration process is performed after the content is downloaded.
- the viewing license registration process is performed after the content download is completed.
- the viewing license 700 with a viewing time limit, Needless to say, the effect of enabling viewing while downloading is obtained.
- the same pack ID as the first target content 906 and the target content 906 to be written is set.
- the valid / invalid flag 808 of the content 905 that is held is “invalid” (steps S850 and S851)
- the valid / invalid flag 808 is temporarily “invalid” for content that is written using the export license 710 with a viewing time limit. Needless to say, the same effect can be obtained without changing to "".
- the reproduction ends without starting (step S862).
- the same effect can be obtained even if the content in which the valid / invalid flag 808 is “invalid” is made invisible or cannot be selected. Needless to say.
- step S862 if the valid / invalid flag 808 is “invalid” in the flow shown in FIG. 7, the reproduction is not started and the process is terminated (step S862). Is inserted, and the content having the same pack ID as the content to be played back and all the content having the pack ID written out by the download terminal 903 are included on the SD card 911 Even if the viewing time limit of the content having the pack ID on the SD card 911 is unconfirmed, the valid / invalid flag 808 of the content to be reproduced is changed to “valid” and reproduced. Also good.
- the valid / invalid flag 808 of the content 905 is displayed. Is set to “invalid”, but if the SD card 911 to which the content 906 has been written is inserted into the download terminal 903 at this time, the content 906 has not yet been played back and the viewing time limit has not yet been determined. Alternatively, the valid / invalid flag 808 of the content 905 may be changed to “valid” and the process may proceed to step S863 in FIG.
- the viewing time limit of the content 906 remains undecided, but the content having the same pack ID as the content 905 has not yet been played back, and the viewing time limit does not differ for the same pack content.
- the content 905 may be reproducible. By starting the reproduction of the content 905 at this time, the viewing time limit of the pack content is determined, and the same date and time is set for the viewing time limit of each pack content, so that the viewing time limit of the pack content is synchronized.
- the download terminal 903 when the download terminal 903 reproduces the content 905 in which the viewing license availability state is “valid” and the viewing deadline is undetermined, as shown in the flow of FIG.
- the viewing deadline is determined by acquiring the attached viewing license 700 (step S864). Instead of requesting the viewing license 700 with the viewing deadline, the download terminal 903 itself views the content 905 by referring to the current time. You may make it fix a time limit.
- the license availability state is set and confirmed by the valid / invalid flag 808.
- the license is not usable.
- the viewing license may be temporarily deleted. In this case, in order to validate the viewing license once discarded, the viewing license is acquired again from the license server 902. Then, the content is decrypted and reproduced using the decryption key 702 included in the viewing license 700 with the viewing time limit acquired again at this time.
- the viewing time limit 704 when viewing content on the SD card 911, the content column of the download content list 801 is referred to. If the viewing time limit 704 is not set, the viewing time limit 704 is determined from the current time and the viewing time period 703. However, if a content with the same pack ID 714 as that content is searched in the download content list 801 and a viewing deadline 704 is set for any of them, the value is set as the viewing deadline for the content. May be.
- the viewing time limit 704 of the content when viewing a content on the download terminal 903 or the viewing terminal 960, if the viewing time limit 704 of the content is set, playback is started after confirming that the viewing time limit has been exceeded.
- the content having the same pack ID may be searched before the reproduction is started, and if the content exists, the same viewing expiration date start and viewing expiration date values may be entered for the viewing expiration date 704 of all the contents.
- the download terminal 903 and the viewing terminal 960 when the viewing time limit between the contents having the same pack ID does not match, the reproduction of the content may not be started. By this process, another effect is obtained that it is possible to prevent the content that is sold in packs from being viewed in an irregular state.
- the download terminal 903 and the viewing terminal 960 if the viewing deadlines between contents having the same pack ID do not match, the viewing deadlines are compared and the most recent viewing deadline is regarded as the viewing deadline in the pack. May be. This process also has the effect of unifying the viewing time limit of the contents sold in packs.
- the content on the SD card 911 is made unviewable at the time of writing, and when the SD card 911 is inserted into the download terminal 903, the same pack ID as the content made unviewable on the SD card 911 is set. If the viewing time limit of the content on the download terminal 903 that the user has has been confirmed, the content synchronization of the pack content can be synchronized even if the viewing time limit of the content on the SD card 911 side is updated and the viewing disabled state is released. Needless to say, it can be guaranteed.
- the viewing terminal 960 when deleting the content 906 on the SD card 911 due to reasons such as the viewing time limit being exceeded, only the entity of the content 906 is deleted, and the entry corresponding to the content 906 is deleted from the download content list 801 You don't have to.
- viewing deadline synchronization processing may be performed if there is no actual content 906 on the SD card 911 and there is an entry in the download content list 801.
- the configuration of the content usage system of the second embodiment is the same as that of the content usage system of the first embodiment, and the configuration block diagram thereof is as shown in FIG.
- the operation when the SD card is inserted into the download terminal 903 and the operation of the license server 902 are different from those in the first embodiment.
- the download terminal 903 and the license server 902 perform the same processing as the download terminal 903 and the license server 902 in the first embodiment, except that the processing described in FIGS. 12 and 14 is performed.
- FIG. 12 is a flowchart for explaining viewing time limit synchronization processing in the download terminal 903 when the SD card 911 is inserted into the download terminal 903 in the second embodiment.
- the download terminal 903 When the SD card 911 is inserted, the download terminal 903 performs viewing time limit synchronization processing according to the flow shown in FIG.
- step S881 to step S885 is the same as the processing of the first embodiment shown in FIG.
- the control unit 916 of the download terminal 903 After setting the viewing time limit for the content CB having the same pack ID on the storage medium 915 (step S885), the control unit 916 of the download terminal 903 then sends the content ID 705 of the content CB to the license server 902.
- a viewing time limit notification 810 including the viewing time limit 704 (viewing time limit start and viewing time limit end) is transmitted using the network IF 904 (step S887).
- the control unit 916 causes the viewing license state setting unit 917 to set the valid / invalid flag 808 of the content CB to “valid”.
- FIG. 13 is a schematic diagram showing a format of the viewing time limit notification 810 in the second embodiment.
- the viewing time limit confirmation notification 810 transmitted from the download terminal 903 to the license server 902 includes at least a content ID 705 and a viewing time limit 704 (viewing time limit start and viewing time limit end).
- FIG. 14 is a flowchart of the viewing time limit synchronization process of the license server 902 when the viewing time limit notification 810 arrives at the license server 902 from the download terminal 903 in the second embodiment.
- the viewing time limit setting / confirmation unit 914 determines whether or not the viewing time limit of the content has been confirmed based on the content ID 705. A check is made from information (not shown) (step S890).
- the viewing time limit 704 included in the viewing time limit confirmation notification 810 is extracted and set as the viewing time limit for the content (step S891), and the same pack as the content Similarly, the same viewing time limit is determined for all contents having IDs (step S892).
- the pack content 906 whose viewing deadline has not been determined is written to the SD card 911
- the content 905 in the download terminal 903 having the same pack ID as the content 906 cannot be viewed.
- the viewing deadline is set for the content 905 having the same pack ID as the content 906 on the SD card 911 for which the viewing deadline is fixed
- the license server 902 is notified that the viewing time limit of the pack content 905 has been confirmed, and the pack content 905 and 906 are stored separately on the download terminal 903 and the SD card 911 by releasing the viewing-disabled state.
- the control unit 916 of the download terminal 903 sets the viewing time limit for the content CB having the same pack ID on the storage medium 915 (step S885)
- the viewing time limit is determined.
- the notification 810 is transmitted to the license server 902 (step S887).
- the same pack ID is not transmitted without transmitting the viewing time limit notification 810.
- the viewing time limit notification 810 may be transmitted only when there is content that has not yet been downloaded among the pack content that is held.
- the license server 902 that has received the viewing time limit notification 810 from the download terminal 903 has been notified that the viewing time period of the content has already been determined and is held by itself. If the viewing deadline does not match, an error notification including the content ID 705 of the content and the viewing deadline held by itself may be transmitted to the download terminal 903.
- the download terminal 903 when the download terminal 903 receives an error notification including the viewing time limit from the license server 902, the download terminal 903 sets the viewing time limit included in the error notification for the content having the content ID 705 included in the error notification. Also good.
- the viewing time limit notification shown in FIG. 13 is merely an example, and does not prescribe the content description and configuration of the notification.
- the viewing time limit synchronization with the pack content remaining on the content receiver is performed even for the pack content partially written on the interchangeable medium. It is possible to realize this, and there is an advantage that the pack rental content can be viewed even by a content player having no communication function with the license server.
- the viewing time limit of the rental content left in the download terminal 903, and the content of the content copied and written to the SD card 911 are written out.
- a method for synchronizing the viewing deadline will be described.
- the configuration of the content usage system according to the third embodiment is the same as that of the content usage system according to the first embodiment, as shown in the block diagram of FIG.
- the basic operation of each block shown in FIG. 1 is the same as the operation of each block in the first embodiment.
- each viewing license, each writing license, and each download content list is of the same format as that of the first embodiment shown in FIGS.
- the content 905 is a single rental content to which no pack ID 714 is assigned
- the content 906 is content that is copied and written to the SD card 911.
- the description will be made assuming that the content 905 is left in the download terminal 903 and the content 906 is written to the SD card 911. Since the content 905 and the content 906 are the same content, the viewing time limit of these contents must be set to the same date and time.
- the content 906 in the third embodiment is an example of the copied content of the present invention
- the content 905 is an example of the stored content of the present invention.
- the content of the entry number 1 is a single content to which the pack ID 714 is not assigned.
- a single content such as entry number 1 will be described.
- the flowchart of the viewing license registration process when the download terminal 903 of the third embodiment acquires the viewing license of the content 905 stored in the storage medium 915 is as shown in FIG.
- FIG. 15 is a flowchart of the writing process when the download terminal 903 of the third embodiment copies and writes to the SD card 911 while the content 905 stored in the storage medium 915 remains in the download terminal 903.
- FIG. 9 a flowchart of the viewing start process when the content 905 stored in the storage medium 915 is played back by the download terminal 903 is as shown in FIG.
- the flowchart of the viewing start process when the viewing terminal 960 views the copy content 906 recorded on the SD card 911 is as shown in FIG.
- the flowchart of the viewing license grant process in the license server 902 of the third embodiment is as shown in FIG.
- the flowchart of the writing license grant process in the license server 902 of the third embodiment is as shown in FIG.
- FIG. 16 is a flowchart of viewing time limit synchronization processing when the SD card 911 is inserted into the download terminal 903 in the third embodiment.
- a viewing license registration process for the content 905 is performed according to the flow of FIG.
- the valid / invalid flag 808 of the content 905 is set to “valid” (step S823).
- the control unit 916 of the download terminal 903 follows the flow shown in FIG. Therefore, the reproduction of content is controlled.
- the control unit 916 When receiving a playback instruction for the content 905 downloaded and stored in the storage medium 915 (not shown) from the user, the control unit 916 first searches the download content list 800 by the viewing license state setting unit 917, The setting of the valid / invalid flag 808 is confirmed (step S861). In this case, since the copied content 906 has not been written to the SD card 911, the valid / invalid flag 808 remains set to “valid” in step S823 in FIG. 5, and then the process in step S863 is performed.
- control unit 916 causes the viewing time limit setting unit 918 to search the download content list 800 and confirms whether or not the viewing time limit of the content 905 is fixed (step S863). In this case, since the content 905 is viewed for the first time, the viewing time limit is undetermined, and the process of step S864 is performed next.
- the control unit 916 acquires the viewing license 700 with the viewing time limit of the content 905 from the license server 902 using the network IF 904 (step S864), and the viewing time setting unit 918 obtains the viewing license 700 with the viewing time limit obtained.
- the viewing deadline start and the viewing deadline end values set as the viewing deadline 704 are entered in the corresponding area of the download content list 800.
- step S865 Since the content 905 is a single content that is not a pack content, the process of step S865 is skipped.
- step S868 Since a valid value in which the current time is set at the start of the viewing time limit is set by the license server 902 in the viewing time limit 704 of the viewing license 700 with a viewing time limit acquired in step S864, the control unit 916 In step S907, the content 905 is decrypted and reproduced using the viewing license (step S868).
- step S864 the operation for determining the viewing time limit in the license server 902 that has received the viewing license request with the viewing time limit transmitted from the download terminal 903 is the same as that in the first embodiment, and is performed according to the flow shown in FIG.
- step S840 since the target content 905 has not yet been played on the download terminal 903, it is determined in step S840 that it is the first reception, and the viewing time limit of the target content 905 has not yet been determined.
- the viewing time limit setting / determining unit 914 calculates the viewing time limit end time by setting the current time as the viewing time limit start time and adding the viewing time period to the viewing time limit start time. Thus, the viewing time limit for the content is determined.
- step S842 in FIG. 9 is skipped.
- the license transmission unit 913 returns the viewing license 700 with the viewing time limit including the confirmed viewing time limit 704 to the download terminal 903 (step S843).
- step S844 if the viewing time limit of the target content 905 has already been determined, that is, if a request for a viewing license with a viewing time limit for the content 905 has been received in advance, the determined time limit is determined.
- the viewing license with viewing deadline 700 including the viewing deadline 704 is returned to the download terminal 903 (step S843).
- the control unit 916 of the download terminal 903 writes the SD card read / write unit 910 according to the flow shown in FIG. Control.
- the control unit 916 Upon receiving a copy content write request instruction from the user (not shown), the control unit 916 first determines whether or not the viewing time limit of the copy source content 905 has been determined (step S830). The control unit 916 causes the viewing time limit setting unit 918 to determine whether or not the viewing time limit has been determined based on the information on the viewing period 703 and the viewing time limit 704 of the download content list 800. In this case, since the copy source content 905 has been reproduced on the download terminal 903, the viewing time limit has been determined in step S864 in FIG. 7, and the control unit 916 then writes from the license server 902 using the network IF 904. A license is acquired (step S832).
- control unit 916 causes the SD card read / write unit 910 to write the copy content 906 to the SD card 911 using the writing license (step S833).
- the value of the download content list 800 is copied to each area of the download content list 801 written to the SD card 911.
- the process of writing the copied content 906 to the SD card 911 in step S833 may be a process of temporarily creating the content 906 obtained by copying the content 905 in the download terminal 903 and then moving the content 906 to the SD card 911.
- the content 906 may be directly copied to the SD card 911 without writing the content 906 in the download terminal 903, and the content 906 may be written on the SD card 911.
- the viewing terminal 960 When viewing the content 906 written to the SD card 911 by the download terminal 903 in this way on the viewing terminal 960, the viewing terminal 960 follows the flow shown in FIG. Playback control of the above content 906 is performed.
- the expiration date determining unit 921 determines whether the viewing time limit of the target content is determined. Whether or not is determined (step S871).
- the time limit determining unit 921 reads the download content list 801 recorded on the SD card 911 by the SD card read / write unit 920 and determines the time limit for viewing based on the information on the viewing period 703 and the viewing time limit 704 of the target content 906. Determine whether or not.
- the time limit determining unit 921 next refers to the download content list 801 to view the content. It is determined whether the time limit has been exceeded (step S874). If the time limit determining unit 921 determines that the viewing time limit has already exceeded, the playback control unit 923 deletes the content 906 (step S875), and if the viewing time limit has not been exceeded, the content 906 is deleted. Starts decoding / reproducing (step S876).
- the viewing time limit of the content 905 is determined when the copy content 906 is reproduced on the download terminal 903 (step S864), it is possible to synchronize the viewing time limit of the content 906 that is subsequently copied and written to the SD card 911.
- the control unit 916 controls writing according to the flow shown in FIG.
- the control unit 916 Upon receiving a copy content write request instruction from the user (not shown), the control unit 916 first determines whether or not the viewing time limit of the copy source content 905 has been determined (step S830). In this case, since the copy source content 905 has not been played on the download terminal 903 yet, the viewing time limit is undetermined, and the process of step S831 is performed next.
- the control unit 916 sets the valid / invalid flag 808 of the copy source content 905 in the download content list 800 to “invalid” by the viewing license state setting unit 917 (step S831).
- control unit 916 sends a request for a write license for copying and writing the content 905 to the license server 902, acquires the write license from the license server 902 (step S832), and uses the write license to create an SD card. Copy / write control to the card 911 is performed.
- step 832 since the content 905 has not yet been reproduced and the viewing time limit has not yet been determined, in step 832, the writing license 712 with a viewing period is received.
- step S832 in FIG. 15 the operation of the license server 902 when the download terminal 903 requests the license license to be written to the license server 902 is the same as that in the first embodiment, and the license server 902 follows the flow in FIG. Therefore, the writing license grant process is performed.
- the viewing time limit setting / determining unit 914 retrieves from its own history information (not shown) whether or not the viewing time limit of the content has already been confirmed. If the viewing time limit for the content has already been confirmed, the license transmission unit 913 returns the writing license 710 with a viewing time limit in which the confirmed viewing time limit is set to the download terminal 903 (step S846). If the viewing deadline is not confirmed, the writing license 712 with the viewing period with the viewing deadline being undecided is returned to the download terminal 903 (step S847).
- the export license acquired in step S832 is the export license with viewing period 712, that is, the content 906 written to the SD card 911 is written without being confirmed.
- the control unit 916 follows the flow of FIG. First, the setting of the valid / invalid flag 808 of the reproduction target content 905 is confirmed (step S861).
- step S831 Since the valid / invalid flag 808 of the reproduction target content 905 remains set to “invalid” in step S831, the control unit 916 terminates without permitting reproduction of the reproduction target content 905 (step S862).
- the viewing terminal 960 performs playback control of the content 906 on the SD card 911 according to the flow shown in FIG.
- the reproduction control unit 923 When the reproduction control unit 923 is instructed to reproduce the content 906 recorded on the SD card 911 by an instruction (not shown) from the user, first, the expiration date determining unit 921 first displays the content column of the download content list 801. To determine whether or not the time limit for viewing the content 906 has been determined (step S871).
- step S871 since the target content 906 is written to the SD card 911 with the viewing deadline being undetermined, it is determined in step S871 that the viewing deadline is undetermined.
- the time limit determining unit 921 acquires the current time from the clock 922, sets the current time as the viewing time limit start time, and adds the viewing time period 703 to the viewing time limit start time. Then, the viewing deadline 704 is determined by calculating the viewing deadline end time, and these numerical values are written in the download content list 801 (step S872).
- step S873 since the content 906 is not a pack content and is not assigned a pack ID 714, the process of step S873 is skipped.
- the reproduction control unit 923 starts decrypting / reproducing the content 906 using the decryption key 702 described in the download content list 801 (step S876).
- the download terminal 903 When the SD card 911 is inserted, the download terminal 903 performs viewing time limit synchronization processing according to the flow shown in FIG.
- the control unit 916 Upon receiving a notification that the SD card 911 has been inserted from the SD card read / write unit 910, the control unit 916 causes the viewing time limit setting unit 918 to search the download content list 801 on the SD card 911 and store it in the storage medium 915.
- the content having the same content ID 705 as the current content is extracted (step S834). In this case, content 906 that is the same content as content 905 stored in storage medium 915 is extracted.
- control unit 916 causes the viewing time limit setting unit 918 to search the download content list 801 and confirms whether or not the viewing time limit of the extracted content 906 is fixed (step S835).
- the viewing time limit of the content 906 is determined and set in step S872.
- control unit 916 causes the viewing license state setting unit 917 to check the state of the valid / invalid flag 808 of the copy source content 905 that is the same content as the content 906 (step S836).
- the control unit 916 sets the viewing deadline set for the content 906 by the viewing deadline setting unit 918 as the viewing deadline for the content 905 (download)
- the content list 800 is entered) (step S837).
- the viewing license state setting unit 917 changes the valid / invalid flag 808 of the content 905 to “valid” (step S838).
- the copy source content 905 in the download terminal 903 is loaded when the SD card 911 is not attached. Playback is prohibited, and when the SD card 911 is inserted, the same viewing time limit as the copy content 906 on the SD card 911 is set and playback is permitted, so the same on the download terminal 903 and the SD card 911 The viewing deadlines of the contents 905 and 906 can be synchronized.
- the content of the copy source in the download terminal is set to the non-viewable state, and the SD card is inserted into the download terminal.
- the same content stored separately on the download terminal and the SD card by setting the same viewing deadline as the copy content whose viewing deadline is determined for the copy source content and canceling the viewing disabled state
- the viewing time limit is set based on the time when any one of the contents is first viewed, it is possible to guarantee the time synchronization of the copied content and the copied content.
- the valid / invalid flag 808 of the content 905 is set to “invalid”. If the SD card 911 that has written out the copy content 906 is inserted into the download terminal 903 at this time, the copy is performed even if the content 906 has not been played back and the viewing time limit has not yet been determined.
- the valid / invalid flag 808 of the original content 905 may be changed to “valid”, and the process may proceed to step S863 in FIG.
- the viewing time limit of the content 905 is determined, and the confirmed same date and time is set as the viewing time limit of the copy content 906 on the SD card 911, and the viewing time limits of the content 905 and 906 are set. Be synchronized.
- the license availability state is set and confirmed by the valid / invalid flag 808.
- the viewing license is used. May be deleted once.
- the viewing license is acquired again from the license server 902. Then, the content is decrypted and reproduced using the decryption key 702 included in the viewing license 700 with the viewing time limit acquired again at this time.
- the configuration of the present invention can be realized by hardware, but can also be realized by software by causing a CPU to execute a program.
- control unit 916 viewing license status setting unit 917, viewing time limit setting unit 918, and the like can be easily implemented by software to cope with changes or additions of license information, changes or additions of license formats, etc. can do.
- the program according to the present invention is configured so that when the content receiver writes the content to the replaceable medium before the content is reproduced, the content viewing license is combined with the content viewing license.
- the operation of the viewing deadline synchronization step for activating the viewing license A program to be executed by the computer, a computer in cooperation with a program that works.
- the content expiration license determination method described above is combined with the content viewing license.
- the operation of the viewing deadline synchronization step for activating the viewing license of A recording medium recording a program for executing a computer, readable and by a computer, a recording medium in which the program is utilized in cooperation with the computer read.
- the program of the present invention is copied when the content receiver copies the stored content to the replaceable medium before reproducing the stored content in the above-described viewing time limit determining method.
- the content writing step wherein the viewing license for the content that has been copied is written to the replaceable medium, and the viewing license for the stored content is invalidated if the viewing time limit of the copied content is uncertain,
- the replaceable medium is loaded in the content receiver after the content player reproduces the copied content, the viewing time limit of the stored content is the viewing time limit of the copied content.
- the recording medium of the present invention may be configured such that when the content receiver copies the stored content to the replaceable medium before reproducing the stored content in the above-described viewing time limit determining method, the copy is performed.
- the replaceable medium is attached to the content receiver after the content player reproduces the copied content, the viewing time limit of the stored content is set as the viewing time limit of the copied content.
- a recording medium recording a program for executing a viewing time limit computer operation of the synchronization step, readable and by a computer, a recording medium in which the program is utilized in cooperation with the computer read.
- step operation of the present invention means all or part of the operation of the step.
- one usage form of the program of the present invention may be an aspect in which the program is recorded on a recording medium such as a ROM readable by a computer and operates in cooperation with the computer.
- one use form of the program of the present invention may be an aspect in which the program is transmitted through a transmission medium such as the Internet or a transmission medium such as light / radio wave, read by a computer, and operates in cooperation with the computer. .
- the content receiver, the content use system, the viewing time limit determining method, etc. according to the present invention, even when a part of a plurality of contents that should have the same viewing time limit is written on a replaceable medium before the viewing time limit is determined.
- the encrypted content whose viewing deadline is managed can be synchronized and copied from the content receiver to a replaceable medium and taken out by the player of the replaceable medium. It is useful as a content receiver, a content use system, a viewing time limit determining method, and the like for reproduction.
- 600 server 601 download terminal 602 viewing terminal 605 HDD 606 SD card 700 Viewing license with viewing period 701 Viewing license with viewing period 702 Decryption key 703 Viewing period 704 Viewing period 705 Content ID 710 Export license with viewing period 711 Media type 712 Export license with viewing period 713 License type 714 Pack ID 800 Downloaded content list 801 Downloaded content list 808 Valid / invalid flag 810 Viewing time limit notification 901 Content server 902 License server 903 Download terminal 904 Network IF 905 content 906 content 907 playback unit 908 decoder 910 SD card read / write unit 911 SD card 912 request reception unit 913 license transmission unit 914 viewing time limit setting / determination unit 915 storage medium 916 control unit 918 viewing license state setting unit 918 viewing time limit setting unit 919 Clock 920 SD card read / write unit 921 Time limit determination unit 922 Clock 923 Playback control unit 924 Decoder 960 Viewing terminal
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Abstract
Description
視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを可換媒体に書き出すコンテンツ受信機であって、
視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記コンテンツおよび前記コンテンツの視聴ライセンスを前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを備え、
前記制御部は、
前記コンテンツを再生する前に前記可換媒体読み書き部によって前記コンテンツを前記可換媒体へ書き出させる際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記コンテンツの視聴期限が未確定の場合には、前記ライセンス無効有効化部によって前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化させ、
前記可換媒体に書き出した前記コンテンツをコンテンツ再生機が再生することにより確定された視聴期限が設定された前記コンテンツの視聴ライセンスが記録された前記可換媒体が装着された際、前記視聴期限設定部によって前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記関連コンテンツの視聴ライセンスを有効化させる、コンテンツ受信機である。 In order to solve the above-described problem, the first aspect of the present invention provides:
A content receiver that receives content managed for a viewing time limit from a content server and writes the content to a replaceable medium,
A license invalidation validating unit for invalidating and validating a viewing license; and writing / reading the content and the viewing license of the content to the replaceable medium and reading at least the view license written in the replaceable medium A viewing deadline setting unit for setting a viewing deadline, and a control unit,
The controller is
When the content is written to the replaceable medium by the replaceable medium read / write unit before the content is played, the content viewing license is written to the replaceable medium together with the content viewing time limit. Is invalidated, the license invalidation validating unit invalidates the viewing license of the related content belonging to the same predetermined content group as the content,
When the replaceable medium on which the viewing license of the content in which the viewing time limit determined by the content player reproducing the content written on the replaceable medium is recorded is loaded, the viewing time limit setting is performed. The content receiver sets the viewing time limit of the related content to the same time limit as the viewing time limit of the content, and makes the viewing license of the related content valid by the license invalidation validating unit.
前記視聴ライセンスを供給するライセンスサーバとの間でデータを送受信する送受信部を備え、
前記制御部は、前記視聴期限設定部によって前記関連コンテンツの視聴期限を設定させた際に、前記設定させた視聴期限を、前記送受信部によって前記ライセンスサーバへ通知させる、第1の本発明のコンテンツ受信機である。 The second aspect of the present invention
A transmission / reception unit that transmits / receives data to / from a license server that supplies the viewing license;
The content according to the first aspect of the present invention, wherein when the viewing time limit setting unit sets the viewing time limit of the related content, the control unit causes the transmission / reception unit to notify the license server of the set viewing time limit. It is a receiver.
前記制御部は、前記コンテンツサーバからまだダウンロードしていない前記所定のコンテンツ群に属するコンテンツがある場合にのみ、前記設定させた視聴期限を、前記送受信部によって前記ライセンスサーバへ通知させる、第2の本発明のコンテンツ受信機である。 The third aspect of the present invention
The control unit causes the transmission / reception unit to notify the license server of the set viewing deadline only when there is content belonging to the predetermined content group that has not yet been downloaded from the content server. It is a content receiver of the present invention.
前記制御部は、
視聴期限が未確定の前記コンテンツの視聴ライセンスが記録された前記可換媒体が装着されているときに前記関連コンテンツを再生する際、前記ライセンス無効有効化部によって前記関連コンテンツの視聴ライセンスを有効化させるとともに、前記視聴期限設定部によって前記関連コンテンツの視聴期限を確定させ、前記可換媒体に記録されている前記コンテンツの視聴期限をその確定した前記関連コンテンツの視聴期限と同一の期限に設定させる、第1の本発明のコンテンツ受信機である。 The fourth aspect of the present invention is
The controller is
When the related content is played when the exchangeable medium in which the viewing license for the content whose viewing deadline has not yet been confirmed is loaded, the license invalidation validating unit validates the viewing license for the related content In addition, the viewing time limit of the related content is determined by the viewing time limit setting unit, and the viewing time limit of the content recorded on the exchangeable medium is set to the same time limit as the determined viewing time limit of the related content. The content receiver according to the first aspect of the present invention.
前記ライセンス無効有効化部が、視聴期限が未確定の前記関連コンテンツの視聴ライセンスを無効化するとは、前記関連コンテンツの視聴ライセンスを破棄することであり、
前記制御部が破棄された前記関連コンテンツの視聴ライセンスを有効化させる場合、前記ライセンス無効有効化部は、ライセンスサーバから前記関連コンテンツの視聴ライセンスを取得し直す、第1の本発明のコンテンツ受信機である。 The fifth aspect of the present invention provides
The license invalidation validating unit invalidates the viewing license of the related content whose viewing deadline has not yet been determined, is to discard the viewing license of the related content,
The content receiver according to the first aspect of the present invention, wherein when the control unit validates the viewing license of the related content that has been discarded, the license invalidation validation unit reacquires the viewing license of the related content from a license server. It is.
視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを可換媒体に書き出すコンテンツ受信機と、前記可換媒体に記録された前記コンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムであって、
前記コンテンツ受信機は、視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記コンテンツおよび前記コンテンツの視聴ライセンスを前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを有し、
前記制御部は、前記コンテンツを再生する前に前記可換媒体読み書き部によって前記コンテンツを前記可換媒体へ書き出させる際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記コンテンツの視聴期限が未確定の場合には、前記ライセンス無効有効化部によって前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化させ、
前記コンテンツ再生機は、前記可換媒体に記録された前記コンテンツを再生する際、前記コンテンツの視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記コンテンツの視聴期限を確定する視聴期限確定部と、その確定した視聴期限を設定した前記コンテンツの視聴ライセンスを前記可換媒体に記録する視聴ライセンス書き込み部とを有し、
前記制御部は、前記可換媒体に記録された前記コンテンツが前記コンテンツ再生機によって再生された後に前記コンテンツ受信機に前記可換媒体が装着された際、前記視聴期限設定部によって前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記関連コンテンツの視聴ライセンスを有効化させる、コンテンツ利用システムである。 The sixth aspect of the present invention provides
A content use system comprising: a content receiver that receives content whose viewing deadline is managed from a content server and writes the content to a replaceable medium; and a content player that reproduces the content recorded on the replaceable medium Because
The content receiver includes a license invalidation validating unit that invalidates and validates a viewing license, writes the content and the viewing license of the content to the replaceable medium, and at least the view license written in the replaceable medium An exchangeable medium read / write unit for reading the content, a viewing time limit setting unit for setting a viewing time limit, and a control unit,
When the control unit writes the content to the replaceable medium by the replaceable medium read / write unit before reproducing the content, the control unit writes the viewing license of the content to the replaceable medium, and When the viewing time limit of the content is undecided, the license invalidation validating unit invalidates the viewing license of related content belonging to the same predetermined content group as the content,
When playing back the content recorded on the interchangeable medium, the content player sets the current time limit for the content by setting the current time as the start time if the content time limit is not yet determined. A viewing time limit determining unit to be confirmed, and a viewing license writing unit for recording the viewing license of the content in which the determined viewing time limit is set in the replaceable medium,
When the content recorded on the replaceable medium is played back by the content player and the replaceable medium is attached to the content receiver, the control unit causes the viewing time limit setting unit to store the related content. In the content use system, the viewing deadline is set to the same deadline as the content viewing deadline, and the license invalidation validating unit validates the viewing license of the related content.
視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを可換媒体に書き出すコンテンツ受信機と、前記可換媒体に記録された前記コンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムのコンテンツの視聴期限確定方法であって、
前記コンテンツ受信機が、前記コンテンツを再生する前に前記コンテンツを前記可換媒体へ書き出す際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記コンテンツの視聴期限が未確定の場合には、前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化する、コンテンツ書き出しステップと、
前記コンテンツ再生機が前記可換媒体に記録された前記コンテンツを再生する際、前記視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記視聴期限を確定し、その確定した視聴期限を設定した前記コンテンツの視聴ライセンスを前記可換媒体に記録する、視聴期限確定ステップと、
前記コンテンツ再生機が前記コンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定するとともに前記関連コンテンツの視聴ライセンスを有効化する視聴期限同期ステップとを備えた、視聴期限確定方法である。 The seventh aspect of the present invention
A content use system comprising: a content receiver that receives content whose viewing deadline is managed from a content server and writes the content to a replaceable medium; and a content player that reproduces the content recorded on the replaceable medium Is a method for determining the viewing deadline of the content of
When the content receiver writes the content to the replaceable medium before playing the content, the content receiver writes the content viewing license together with the replaceable medium, and the viewing time limit of the content is uncertain A content writing step of invalidating a viewing license of related content belonging to the same predetermined content group as the content;
When the content player reproduces the content recorded on the interchangeable medium, if the viewing time limit is not yet determined, the viewing time limit is determined by setting the current time as the start time, and the determination is made. Recording a viewing license for the content set with the viewing deadline, and recording the viewing license on the replaceable medium;
After the content player reproduces the content, when the replaceable medium is attached to the content receiver, the related content viewing deadline is set to the same deadline as the content viewing deadline and the related content And a viewing deadline synchronization step for validating the viewing license.
第7の本発明の視聴期限確定方法の、前記コンテンツ受信機が、前記コンテンツを再生する前に前記可換媒体へ前記コンテンツを書き出す際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記コンテンツの視聴期限が未確定の場合には、前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化する、前記コンテンツ書き出しステップ、および、前記コンテンツ再生機が前記コンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定するとともに前記関連コンテンツの視聴ライセンスを有効化する前記視聴期限同期ステップをコンピュータに実行させるプログラムである。 In addition, the eighth aspect of the present invention
According to a seventh aspect of the present invention, when the content receiver writes the content to the replaceable medium before playing the content, the content viewing license is written to the replaceable medium when the content receiver writes the content to the replaceable medium. In addition, when the viewing time limit of the content is uncertain, the content writing step of invalidating the viewing license of the related content belonging to the same predetermined content group as the content, and the content player, After playing the content, when the replaceable medium is loaded in the content receiver, the viewing time limit of the related content is set to the same time limit as the viewing time of the content and the viewing license of the related content is valid A program for causing a computer to execute the viewing deadline synchronization step It is a non.
視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを格納するとともに可換媒体に複写するコンテンツ受信機であって、
前記格納されたコンテンツの視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記格納されたコンテンツを前記可換媒体へ複写し、前記可換媒体上の複写されたコンテンツについての視聴ライセンスを前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを備え、
前記制御部は、
前記格納されたコンテンツを再生する前に前記可換媒体読み書き部によって前記格納されたコンテンツを前記可換媒体へ複写させる際、前記複写されたコンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを無効化させ、
前記可換媒体に書き出した前記複写されたコンテンツをコンテンツ再生機が再生することにより確定された視聴期限が設定された前記複写されたコンテンツの視聴ライセンスが記録された前記可換媒体が装着された際、前記視聴期限設定部によって前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを有効化させる、コンテンツ受信機である。 The ninth aspect of the present invention provides
A content receiver that receives content managed from a viewing time limit from a content server, stores the content, and copies the content to a replaceable medium,
A license invalidation validating unit for invalidating and validating the viewing license of the stored content, and copying the stored content to the replaceable medium, and a viewing license for the copied content on the replaceable medium A removable medium read / write unit that reads at least the viewing license written in the replaceable medium, a viewing time limit setting unit that sets a viewing time limit, and a control unit,
The controller is
When the stored content is copied to the replaceable medium by the replaceable medium read / write unit before the stored content is reproduced, the viewing license of the copied content is also written to the replaceable medium. And when the viewing time limit of the copied content is undecided, the license invalidation validating unit invalidates the stored content viewing license,
The interchangeable medium on which the viewing license of the copied content in which the viewing time limit determined by the content player reproducing the copied content written on the interchangeable medium is reproduced is loaded. In this case, the viewing time limit of the stored content is set to the same time limit as the viewing time of the copied content by the viewing time limit setting unit, and the viewing license of the stored content is set by the license invalidation validating unit. This is a content receiver to be activated.
前記制御部は、
視聴期限が未確定の前記複写されたコンテンツの視聴ライセンスが記録された前記可換媒体が装着されているときに前記格納されたコンテンツを再生する際、前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを有効化させるとともに、前記視聴期限設定部によって前記格納されたコンテンツの視聴期限を確定させ、前記複写されたコンテンツの視聴期限をその確定した視聴期限と同一の期限に設定させる、第9の本発明のコンテンツ受信機である。 The tenth aspect of the present invention is
The controller is
When the stored content is played back when the exchangeable medium in which the viewing license of the copied content whose viewing time limit has not been determined is loaded is stored by the license invalidation validating unit. Validating the viewing license of the content, confirming the viewing time limit of the stored content by the viewing time limit setting unit, and setting the viewing time limit of the copied content to the same time limit as the confirmed viewing time limit, It is a content receiver of 9th this invention.
前記ライセンス無効有効化部が、視聴期限が未確定の前記格納されたコンテンツの視聴ライセンスを無効化するとは、前記格納されたコンテンツの視聴ライセンスを破棄することであり、
前記制御部が破棄された前記格納されたコンテンツの視聴ライセンスを有効化させる場合、前記ライセンス無効有効化部は、ライセンスサーバから前記格納されたコンテンツの視聴ライセンスを取得し直す、第9の本発明のコンテンツ受信機である。 The eleventh aspect of the present invention is
The license invalidation validating unit invalidates the viewing license of the stored content whose viewing deadline is undecided is to discard the viewing license of the stored content,
When the control unit validates the viewing license for the stored content that has been discarded, the license invalidation validation unit reacquires the viewing license for the stored content from a license server. Is a content receiver.
視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを格納するとともに可換媒体に複写するコンテンツ受信機と、前記可換媒体に記録された前記複写されたコンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムであって、
前記コンテンツ受信機は、前記格納されたコンテンツの視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記格納されたコンテンツを前記可換媒体へ複写し、前記可換媒体上の前記複写されたコンテンツについての視聴ライセンスをあわせて前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを有し、
前記制御部は、前記格納されたコンテンツを再生する前に前記可換媒体読み書き部によって前記格納されたコンテンツを前記可換媒体へ複写させる際、前記複写されたコンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを無効化させ、
前記コンテンツ再生機は、前記可換媒体に記録された前記複写されたコンテンツを再生する際、前記複写されたコンテンツの視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記複写されたコンテンツの視聴期限を確定する視聴期限確定部と、その確定した視聴期限を設定した前記複写されたコンテンツの視聴ライセンスを前記可換媒体に記録する視聴ライセンス書き込み部とを有し、
前記制御部は、前記可換媒体に記録された前記複写されたコンテンツが前記コンテンツ再生機によって再生された後に前記コンテンツ受信機に前記可換媒体が装着された際、前記視聴期限設定部によって前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを有効化させる、コンテンツ利用システムである。 The twelfth aspect of the present invention is
A content receiver that receives content managed from the viewing deadline from a content server, stores the content and copies it to a replaceable medium, and a content player that plays back the copied content recorded on the replaceable medium A content use system comprising:
The content receiver invalidates and validates a viewing license of the stored content, copies the stored content to the replaceable medium, and copies the copy on the replaceable medium A viewable license for a content that has been written to the replaceable medium, read at least the viewable license written in the replaceable medium, a view limit setting unit for setting a view deadline, and control And
When the stored content is copied to the replaceable medium by the replaceable medium read / write unit before the stored content is reproduced, the control unit also combines the viewing license of the copied content with the viewable license. In addition to writing to a replacement medium, if the viewing time limit of the copied content is unconfirmed, the license invalidation validating unit invalidates the stored content viewing license,
The content player, when reproducing the copied content recorded on the interchangeable medium, sets the current time as the start time if the viewing time limit of the copied content is uncertain A viewing time limit determining unit for determining a viewing time limit for the copied content, and a viewing license writing unit for recording a viewing license for the copied content in which the determined viewing time limit is set on the replaceable medium,
When the replaceable medium is attached to the content receiver after the copied content recorded on the replaceable medium is played back by the content player, the control unit sets the viewing time limit by the viewing time limit setting unit. A content use system that sets a viewing time limit for stored content to the same time limit as a viewing time limit for the copied content, and enables a license for validating the stored content by the license invalidation validating unit. .
視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを格納するとともに可換媒体に複写するコンテンツ受信機と、前記可換媒体に記録された前記複写されたコンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムのコンテンツの視聴期限確定方法であって、
前記コンテンツ受信機が、前記格納されたコンテンツを再生する前に前記格納されたコンテンツを前記可換媒体へ複写する際、前記複写されたコンテンツについての視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記格納されたコンテンツの視聴ライセンスを無効化する、コンテンツ書き出しステップと、
前記コンテンツ再生機が前記可換媒体に記録された前記複写されたコンテンツを再生する際、前記複写されたコンテンツの視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記複写されたコンテンツの視聴期限を確定し、その確定した視聴期限を設定した前記複写されたコンテンツの視聴ライセンスを前記可換媒体に記録する、視聴期限確定ステップと、
前記コンテンツ再生機が前記複写されたコンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定するとともに前記格納されたコンテンツの視聴ライセンスを有効化する視聴期限同期ステップとを備えた、視聴期限確定方法である。 The thirteenth aspect of the present invention is
A content receiver that receives content managed from the viewing deadline from a content server, stores the content and copies it to a replaceable medium, and a content player that plays back the copied content recorded on the replaceable medium A method for determining the viewing deadline of content in a content usage system comprising:
When the content receiver copies the stored content to the replaceable medium before reproducing the stored content, the content receiver writes the viewing license for the copied content to the replaceable medium. A content writing step of invalidating the viewing license of the stored content when the viewing time limit of the copied content is uncertain;
When the content player reproduces the copied content recorded on the replaceable medium, if the viewing time limit of the copied content is uncertain, the current time is set as the start time. A viewing time limit determining step for determining a viewing time limit of the copied content, and recording a viewing license of the copied content in which the confirmed viewing time limit is set on the replaceable medium;
When the replaceable medium is loaded in the content receiver after the content player reproduces the copied content, the viewing time limit of the stored content is the same as the viewing time limit of the copied content. A viewing deadline determination method including a viewing deadline synchronization step for setting a deadline and validating a viewing license for the stored content.
第13の本発明の視聴期限確定方法の、前記コンテンツ受信機が、前記格納されたコンテンツを再生する前に前記格納されたコンテンツを前記可換媒体へ複写する際、前記複写されたコンテンツについての視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記格納されたコンテンツの視聴ライセンスを無効化する、前記コンテンツ書き出しステップ、および、前記コンテンツ再生機が前記複写されたコンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定するとともに前記格納されたコンテンツの視聴ライセンスを有効化する前記視聴期限同期ステップをコンピュータに実行させるプログラムである。 The fourteenth aspect of the present invention is
According to a thirteenth aspect of the present invention, when the content receiver copies the stored content to the replaceable medium before reproducing the stored content, the content receiver The content writing step of writing a viewing license together with the interchangeable medium, and invalidating the viewing license of the stored content when the viewing time limit of the copied content is uncertain, and the content After the reproducing device reproduces the copied content, when the replaceable medium is loaded into the content receiver, the viewing time limit of the stored content is set to the same time limit as the viewing time of the copied content. The viewing deadline synchronization process for setting and validating the viewing license for the stored content Tsu is a program to be executed by the up to a computer.
第8または第14の本発明のプログラムを記録した記録媒体であって、コンピュータにより処理可能な記録媒体である。 The fifteenth aspect of the present invention provides
A recording medium on which the program of the eighth or fourteenth aspect of the present invention is recorded, and is a recording medium that can be processed by a computer.
図1は、本発明の実施の形態1におけるコンテンツ利用システムのブロック図である。 (Embodiment 1)
FIG. 1 is a block diagram of a content use system according to
次に、本発明の実施の形態2のコンテンツ利用システムの動作について説明する。 (Embodiment 2)
Next, the operation of the content use system according to the second embodiment of the present invention will be described.
実施の形態1および実施の形態2では、パックコンテンツ内の分散されたコンテンツの期限同期について説明したが、パックではなくとも、ダウンロード端末903内に視聴可能な状態のレンタルコンテンツを残してSDカード911にそのレンタルコンテンツをコピーするようなケースにおいても、同様の方法でダウンロード端末903内のコンテンツの視聴期限と、SDカード911上のコンテンツの視聴期限とを同期させることができる。 (Embodiment 3)
In the first embodiment and the second embodiment, the deadline synchronization of the distributed contents in the pack content has been described. Even in the case where the rental content is copied, the viewing time limit of the content in the download terminal 903 and the viewing time limit of the content on the SD card 911 can be synchronized by the same method.
601 ダウンロード端末
602 視聴端末
605 HDD
606 SDカード
700 視聴期限付き視聴ライセンス
701 視聴期間付き視聴ライセンス
702 復号鍵
703 視聴期間
704 視聴期限
705 コンテンツID
710 視聴期限付き書き出しライセンス
711 メディア種別
712 視聴期間付き書き出しライセンス
713 ライセンス種別
714 パックID
800 ダウンロードコンテンツリスト
801 ダウンロードコンテンツリスト
808 有効/無効フラグ
810 視聴期限確定通知
901 コンテンツサーバ
902 ライセンスサーバ
903 ダウンロード端末
904 ネットワークIF
905 コンテンツ
906 コンテンツ
907 再生部
908 復号機
910 SDカード読み書き部
911 SDカード
912 要求受信部
913 ライセンス送信部
914 視聴期限設定・確定部
915 蓄積媒体
916 制御部
917 視聴ライセンス状態設定部
918 視聴期限設定部
919 時計
920 SDカード読み書き部
921 期限確定部
922 時計
923 再生制御部
924 復号機
960 視聴端末 600
606
710 Export license with
800
905
Claims (15)
- 視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを可換媒体に書き出すコンテンツ受信機であって、
視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記コンテンツおよび前記コンテンツの視聴ライセンスを前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを備え、
前記制御部は、
前記コンテンツを再生する前に前記可換媒体読み書き部によって前記コンテンツを前記可換媒体へ書き出させる際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記コンテンツの視聴期限が未確定の場合には、前記ライセンス無効有効化部によって前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化させ、
前記可換媒体に書き出した前記コンテンツをコンテンツ再生機が再生することにより確定された視聴期限が設定された前記コンテンツの視聴ライセンスが記録された前記可換媒体が装着された際、前記視聴期限設定部によって前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記関連コンテンツの視聴ライセンスを有効化させる、コンテンツ受信機。 A content receiver that receives content managed for a viewing time limit from a content server and writes the content to a replaceable medium,
A license invalidation validating unit for invalidating and validating a viewing license; and writing / reading the content and the viewing license of the content to the replaceable medium and reading at least the view license written in the replaceable medium A viewing deadline setting unit for setting a viewing deadline, and a control unit,
The controller is
When the content is written to the replaceable medium by the replaceable medium read / write unit before the content is played, the content viewing license is written to the replaceable medium together with the content viewing time limit. Is invalidated, the license invalidation validating unit invalidates the viewing license of the related content belonging to the same predetermined content group as the content,
When the replaceable medium on which the viewing license of the content in which the viewing time limit determined by the content player reproducing the content written on the replaceable medium is recorded is loaded, the viewing time limit setting is performed. A content receiver configured to set a viewing deadline for the related content to be the same as the viewing deadline for the content, and a license invalidation validating unit for validating the viewing license for the related content. - 前記視聴ライセンスを供給するライセンスサーバとの間でデータを送受信する送受信部を備え、
前記制御部は、前記視聴期限設定部によって前記関連コンテンツの視聴期限を設定させた際に、前記設定させた視聴期限を、前記送受信部によって前記ライセンスサーバへ通知させる、請求項1に記載のコンテンツ受信機。 A transmission / reception unit that transmits / receives data to / from a license server that supplies the viewing license;
The content according to claim 1, wherein the control unit causes the transmission / reception unit to notify the license server of the set viewing time limit when the viewing time limit of the related content is set by the viewing time limit setting unit. Receiving machine. - 前記制御部は、前記コンテンツサーバからまだダウンロードしていない前記所定のコンテンツ群に属するコンテンツがある場合にのみ、前記設定させた視聴期限を、前記送受信部によって前記ライセンスサーバへ通知させる、請求項2に記載のコンテンツ受信機。 The control unit causes the transmission / reception unit to notify the license server of the set viewing deadline only when there is content belonging to the predetermined content group that has not yet been downloaded from the content server. The content receiver described in 1.
- 前記制御部は、
視聴期限が未確定の前記コンテンツの視聴ライセンスが記録された前記可換媒体が装着されているときに前記関連コンテンツを再生する際、前記ライセンス無効有効化部によって前記関連コンテンツの視聴ライセンスを有効化させるとともに、前記視聴期限設定部によって前記関連コンテンツの視聴期限を確定させ、前記可換媒体に記録されている前記コンテンツの視聴期限をその確定した前記関連コンテンツの視聴期限と同一の期限に設定させる、請求項1に記載のコンテンツ受信機。 The controller is
When the related content is played when the exchangeable medium in which the viewing license for the content whose viewing deadline has not yet been confirmed is loaded, the license invalidation validating unit validates the viewing license for the related content In addition, the viewing time limit of the related content is determined by the viewing time limit setting unit, and the viewing time limit of the content recorded on the exchangeable medium is set to the same time limit as the determined viewing time limit of the related content. The content receiver according to claim 1. - 前記ライセンス無効有効化部が、視聴期限が未確定の前記関連コンテンツの視聴ライセンスを無効化するとは、前記関連コンテンツの視聴ライセンスを破棄することであり、
前記制御部が破棄された前記関連コンテンツの視聴ライセンスを有効化させる場合、前記ライセンス無効有効化部は、ライセンスサーバから前記関連コンテンツの視聴ライセンスを取得し直す、請求項1に記載のコンテンツ受信機。 The license invalidation validating unit invalidates the viewing license of the related content whose viewing deadline has not yet been determined, is to discard the viewing license of the related content,
The content receiver according to claim 1, wherein when the control unit validates the viewing license of the related content that has been discarded, the license invalidation validation unit reacquires the viewing license of the related content from a license server. . - 視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを可換媒体に書き出すコンテンツ受信機と、前記可換媒体に記録された前記コンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムであって、
前記コンテンツ受信機は、視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記コンテンツおよび前記コンテンツの視聴ライセンスを前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを有し、
前記制御部は、前記コンテンツを再生する前に前記可換媒体読み書き部によって前記コンテンツを前記可換媒体へ書き出させる際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記コンテンツの視聴期限が未確定の場合には、前記ライセンス無効有効化部によって前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化させ、
前記コンテンツ再生機は、前記可換媒体に記録された前記コンテンツを再生する際、前記コンテンツの視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記コンテンツの視聴期限を確定する視聴期限確定部と、その確定した視聴期限を設定した前記コンテンツの視聴ライセンスを前記可換媒体に記録する視聴ライセンス書き込み部とを有し、
前記制御部は、前記可換媒体に記録された前記コンテンツが前記コンテンツ再生機によって再生された後に前記コンテンツ受信機に前記可換媒体が装着された際、前記視聴期限設定部によって前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記関連コンテンツの視聴ライセンスを有効化させる、コンテンツ利用システム。 A content use system comprising: a content receiver that receives content whose viewing deadline is managed from a content server and writes the content to a replaceable medium; and a content player that reproduces the content recorded on the replaceable medium Because
The content receiver includes a license invalidation validating unit that invalidates and validates a viewing license, writes the content and the viewing license of the content to the replaceable medium, and at least the view license written in the replaceable medium An exchangeable medium read / write unit for reading the content, a viewing time limit setting unit for setting a viewing time limit, and a control unit,
When the control unit writes the content to the replaceable medium by the replaceable medium read / write unit before reproducing the content, the control unit writes the viewing license of the content to the replaceable medium, and When the viewing time limit of the content is undecided, the license invalidation validating unit invalidates the viewing license of related content belonging to the same predetermined content group as the content,
When playing back the content recorded on the interchangeable medium, the content player sets the current time limit for the content by setting the current time as the start time if the content time limit is not yet determined. A viewing time limit determining unit to be confirmed, and a viewing license writing unit for recording the viewing license of the content in which the determined viewing time limit is set in the replaceable medium,
When the content recorded on the replaceable medium is played back by the content player and the replaceable medium is attached to the content receiver, the control unit causes the viewing time limit setting unit to store the related content. A content use system in which a viewing deadline is set to the same deadline as the content viewing deadline, and the license invalidation validating unit validates the viewing license of the related content. - 視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを可換媒体に書き出すコンテンツ受信機と、前記可換媒体に記録された前記コンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムのコンテンツの視聴期限確定方法であって、
前記コンテンツ受信機が、前記コンテンツを再生する前に前記コンテンツを前記可換媒体へ書き出す際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記コンテンツの視聴期限が未確定の場合には、前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化する、コンテンツ書き出しステップと、
前記コンテンツ再生機が前記可換媒体に記録された前記コンテンツを再生する際、前記視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記視聴期限を確定し、その確定した視聴期限を設定した前記コンテンツの視聴ライセンスを前記可換媒体に記録する、視聴期限確定ステップと、
前記コンテンツ再生機が前記コンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定するとともに前記関連コンテンツの視聴ライセンスを有効化する視聴期限同期ステップとを備えた、視聴期限確定方法。 A content use system comprising: a content receiver that receives content whose viewing deadline is managed from a content server and writes the content to a replaceable medium; and a content player that reproduces the content recorded on the replaceable medium Is a method for determining the viewing deadline of the content of
When the content receiver writes the content to the replaceable medium before playing the content, the content receiver writes the content viewing license together with the replaceable medium, and the viewing time limit of the content is uncertain A content writing step of invalidating a viewing license of related content belonging to the same predetermined content group as the content;
When the content player reproduces the content recorded on the interchangeable medium, if the viewing time limit is not yet determined, the viewing time limit is determined by setting the current time as the start time, and the determination is made. Recording a viewing license for the content set with the viewing deadline, and recording the viewing license on the replaceable medium;
After the content player reproduces the content, when the replaceable medium is attached to the content receiver, the related content viewing deadline is set to the same deadline as the content viewing deadline and the related content And a viewing deadline synchronization step for validating the viewing license. - 請求項7に記載の視聴期限確定方法の、前記コンテンツ受信機が、前記コンテンツを再生する前に前記可換媒体へ前記コンテンツを書き出す際、前記コンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記コンテンツの視聴期限が未確定の場合には、前記コンテンツと同一の所定のコンテンツ群に属している関連コンテンツの視聴ライセンスを無効化する、前記コンテンツ書き出しステップ、および、前記コンテンツ再生機が前記コンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記関連コンテンツの視聴期限を前記コンテンツの視聴期限と同一の期限に設定するとともに前記関連コンテンツの視聴ライセンスを有効化する前記視聴期限同期ステップをコンピュータに実行させるプログラム。 8. The method according to claim 7, wherein when the content receiver writes the content to the interchangeable medium before reproducing the content, the content viewing license is also written to the replaceable medium. In addition, when the viewing time limit of the content is uncertain, the content writing step of invalidating the viewing license of the related content belonging to the same predetermined content group as the content, and the content player, After playing the content, when the replaceable medium is loaded in the content receiver, the viewing time limit of the related content is set to the same time limit as the viewing time of the content and the viewing license of the related content is valid A program for causing a computer to execute the viewing time synchronization step Grams.
- 視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを格納するとともに可換媒体に複写するコンテンツ受信機であって、
前記格納されたコンテンツの視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記格納されたコンテンツを前記可換媒体へ複写し、前記可換媒体上の複写されたコンテンツについての視聴ライセンスを前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを備え、
前記制御部は、
前記格納されたコンテンツを再生する前に前記可換媒体読み書き部によって前記格納されたコンテンツを前記可換媒体へ複写させる際、前記複写されたコンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを無効化させ、
前記可換媒体に書き出した前記複写されたコンテンツをコンテンツ再生機が再生することにより確定された視聴期限が設定された前記複写されたコンテンツの視聴ライセンスが記録された前記可換媒体が装着された際、前記視聴期限設定部によって前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを有効化させる、コンテンツ受信機。 A content receiver that receives content managed from a viewing time limit from a content server, stores the content, and copies the content to a replaceable medium,
A license invalidation validating unit for invalidating and validating the viewing license of the stored content, and copying the stored content to the replaceable medium, and a viewing license for the copied content on the replaceable medium A removable medium read / write unit that reads at least the viewing license written in the replaceable medium, a viewing time limit setting unit that sets a viewing time limit, and a control unit,
The controller is
When the stored content is copied to the replaceable medium by the replaceable medium read / write unit before the stored content is reproduced, the viewing license of the copied content is also written to the replaceable medium. And when the viewing time limit of the copied content is undecided, the license invalidation validating unit invalidates the stored content viewing license,
The interchangeable medium on which the viewing license of the copied content in which the viewing time limit determined by the content player reproducing the copied content written on the interchangeable medium is reproduced is loaded. In this case, the viewing time limit of the stored content is set to the same time limit as the viewing time of the copied content by the viewing time limit setting unit, and the viewing license of the stored content is set by the license invalidation validating unit. Enable content receiver. - 前記制御部は、
視聴期限が未確定の前記複写されたコンテンツの視聴ライセンスが記録された前記可換媒体が装着されているときに前記格納されたコンテンツを再生する際、前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを有効化させるとともに、前記視聴期限設定部によって前記格納されたコンテンツの視聴期限を確定させ、前記複写されたコンテンツの視聴期限をその確定した視聴期限と同一の期限に設定させる、請求項9に記載のコンテンツ受信機。 The controller is
When the stored content is played back when the exchangeable medium in which the viewing license of the copied content whose viewing time limit has not been determined is loaded is stored by the license invalidation validating unit. Validating the viewing license of the content, confirming the viewing time limit of the stored content by the viewing time limit setting unit, and setting the viewing time limit of the copied content to the same time limit as the confirmed viewing time limit, The content receiver according to claim 9. - 前記ライセンス無効有効化部が、視聴期限が未確定の前記格納されたコンテンツの視聴ライセンスを無効化するとは、前記格納されたコンテンツの視聴ライセンスを破棄することであり、
前記制御部が破棄された前記格納されたコンテンツの視聴ライセンスを有効化させる場合、前記ライセンス無効有効化部は、ライセンスサーバから前記格納されたコンテンツの視聴ライセンスを取得し直す、請求項9に記載のコンテンツ受信機。 The license invalidation validating unit invalidates the viewing license of the stored content whose viewing deadline is undecided is to discard the viewing license of the stored content,
10. The license invalidation validating unit re-acquires the stored content viewing license from a license server when the control unit validates the discarded viewing license of the stored content. Content receiver. - 視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを格納するとともに可換媒体に複写するコンテンツ受信機と、前記可換媒体に記録された前記複写されたコンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムであって、
前記コンテンツ受信機は、前記格納されたコンテンツの視聴ライセンスを無効化および有効化するライセンス無効有効化部と、前記格納されたコンテンツを前記可換媒体へ複写し、前記可換媒体上の前記複写されたコンテンツについての視聴ライセンスをあわせて前記可換媒体へ書き出し、少なくとも前記可換媒体に書き込まれている視聴ライセンスを読み込む可換媒体読み書き部と、視聴期限を設定する視聴期限設定部と、制御部とを有し、
前記制御部は、前記格納されたコンテンツを再生する前に前記可換媒体読み書き部によって前記格納されたコンテンツを前記可換媒体へ複写させる際、前記複写されたコンテンツの視聴ライセンスをあわせて前記可換媒体へ書き出させるとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを無効化させ、
前記コンテンツ再生機は、前記可換媒体に記録された前記複写されたコンテンツを再生する際、前記複写されたコンテンツの視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記複写されたコンテンツの視聴期限を確定する視聴期限確定部と、その確定した視聴期限を設定した前記複写されたコンテンツの視聴ライセンスを前記可換媒体に記録する視聴ライセンス書き込み部とを有し、
前記制御部は、前記可換媒体に記録された前記複写されたコンテンツが前記コンテンツ再生機によって再生された後に前記コンテンツ受信機に前記可換媒体が装着された際、前記視聴期限設定部によって前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定させるとともに、前記ライセンス無効有効化部によって前記格納されたコンテンツの視聴ライセンスを有効化させる、コンテンツ利用システム。 A content receiver that receives content managed from the viewing deadline from a content server, stores the content and copies it to a replaceable medium, and a content player that plays back the copied content recorded on the replaceable medium A content use system comprising:
The content receiver invalidates and validates a viewing license of the stored content, copies the stored content to the replaceable medium, and copies the copy on the replaceable medium A viewable license for a content that has been written to the replaceable medium, read at least the viewable license written in the replaceable medium, a view limit setting unit for setting a view deadline, and control And
When the stored content is copied to the replaceable medium by the replaceable medium read / write unit before the stored content is reproduced, the control unit also combines the viewing license of the copied content with the viewable license. In addition to writing to a replacement medium, if the viewing time limit of the copied content is unconfirmed, the license invalidation validating unit invalidates the stored content viewing license,
The content player, when reproducing the copied content recorded on the interchangeable medium, sets the current time as the start time if the viewing time limit of the copied content is uncertain A viewing time limit determining unit for determining a viewing time limit for the copied content, and a viewing license writing unit for recording a viewing license for the copied content in which the determined viewing time limit is set on the replaceable medium,
When the replaceable medium is attached to the content receiver after the copied content recorded on the replaceable medium is played back by the content player, the control unit sets the viewing time limit by the viewing time limit setting unit. A content usage system that sets a viewing time limit for stored content to the same time limit as the viewing time limit for the copied content, and that enables the viewing license for the stored content by the license invalidation validating unit. - 視聴期限が管理されたコンテンツをコンテンツサーバから受信し、前記コンテンツを格納するとともに可換媒体に複写するコンテンツ受信機と、前記可換媒体に記録された前記複写されたコンテンツを再生するコンテンツ再生機とを備えたコンテンツ利用システムのコンテンツの視聴期限確定方法であって、
前記コンテンツ受信機が、前記格納されたコンテンツを再生する前に前記格納されたコンテンツを前記可換媒体へ複写する際、前記複写されたコンテンツについての視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記格納されたコンテンツの視聴ライセンスを無効化する、コンテンツ書き出しステップと、
前記コンテンツ再生機が前記可換媒体に記録された前記複写されたコンテンツを再生する際、前記複写されたコンテンツの視聴期限が未確定の場合には、現在時刻を開始時刻に設定することにより前記複写されたコンテンツの視聴期限を確定し、その確定した視聴期限を設定した前記複写されたコンテンツの視聴ライセンスを前記可換媒体に記録する、視聴期限確定ステップと、
前記コンテンツ再生機が前記複写されたコンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定するとともに前記格納されたコンテンツの視聴ライセンスを有効化する視聴期限同期ステップとを備えた、視聴期限確定方法。 A content receiver that receives content managed from the viewing deadline from a content server, stores the content and copies it to a replaceable medium, and a content player that plays back the copied content recorded on the replaceable medium A method for determining the viewing deadline of content in a content usage system comprising:
When the content receiver copies the stored content to the replaceable medium before reproducing the stored content, the content receiver writes the viewing license for the copied content to the replaceable medium. A content writing step of invalidating the viewing license of the stored content when the viewing time limit of the copied content is uncertain;
When the content player reproduces the copied content recorded on the replaceable medium, if the viewing time limit of the copied content is uncertain, the current time is set as the start time. A viewing time limit determining step for determining a viewing time limit of the copied content, and recording a viewing license of the copied content in which the confirmed viewing time limit is set on the replaceable medium;
When the replaceable medium is loaded in the content receiver after the content player reproduces the copied content, the viewing time limit of the stored content is the same as the viewing time limit of the copied content. A viewing deadline determination method comprising: a viewing deadline synchronization step for setting a deadline and validating a viewing license for the stored content. - 請求項13に記載の視聴期限確定方法の、前記コンテンツ受信機が、前記格納されたコンテンツを再生する前に前記格納されたコンテンツを前記可換媒体へ複写する際、前記複写されたコンテンツについての視聴ライセンスをあわせて前記可換媒体へ書き出すとともに、前記複写されたコンテンツの視聴期限が未確定の場合には前記格納されたコンテンツの視聴ライセンスを無効化する、前記コンテンツ書き出しステップ、および、前記コンテンツ再生機が前記複写されたコンテンツを再生した後、前記コンテンツ受信機に前記可換媒体が装着された際、前記格納されたコンテンツの視聴期限を前記複写されたコンテンツの視聴期限と同一の期限に設定するとともに前記格納されたコンテンツの視聴ライセンスを有効化する前記視聴期限同期ステップをコンピュータに実行させるプログラム。 14. When the content receiver copies the stored content to the replaceable medium before reproducing the stored content according to the viewing deadline determination method according to claim 13, about the copied content. The content writing step of writing a viewing license together with the interchangeable medium, and invalidating the viewing license of the stored content when the viewing time limit of the copied content is uncertain, and the content After the reproducing device reproduces the copied content, when the replaceable medium is loaded into the content receiver, the viewing time limit of the stored content is set to the same time limit as the viewing time of the copied content. Setting and validating the viewing license for the stored content. Program for executing the steps on a computer.
- 請求項8または14に記載のプログラムを記録した記録媒体であって、コンピュータにより処理可能な記録媒体。 15. A recording medium on which the program according to claim 8 or 14 is recorded, which can be processed by a computer.
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JP2004227282A (en) * | 2003-01-23 | 2004-08-12 | Sony Corp | Contents distribution system, information processor or information processing method and computer program |
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JP2008252200A (en) * | 2007-03-29 | 2008-10-16 | Matsushita Electric Ind Co Ltd | Content processor |
JP2009038510A (en) * | 2007-07-31 | 2009-02-19 | Panasonic Corp | Download terminal, server, content distribution system, content utilization method, and content distribution method |
JP2010113607A (en) * | 2008-11-07 | 2010-05-20 | Panasonic Corp | Recording medium device, content utilization system, and control method of recording medium device, |
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JP2004227282A (en) * | 2003-01-23 | 2004-08-12 | Sony Corp | Contents distribution system, information processor or information processing method and computer program |
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