阅读说明：本技术 内容视听方法及其使用的便携式信息终端 (Content viewing method and portable information terminal used therefor ) 是由 吉泽和彦 桥本康宣 清水宏 冈田义宪 于 2017-06-08 设计创作，主要内容包括：本发明在持有便携式信息终端的用户利用附近的视听装置收看分发或者广播的希望租借的内容时提供具有较高便利性的视听环境。提供一种使用了视听系统的内容视听方法,该视听系统包括分发内容的内容分发服务器、便携式信息终端和用于再现内容的视听装置。(content viewing methods using a viewing system including a content distribution server for distributing content, a portable information terminal, and a viewing device for reproducing content are provided.)

1, A content viewing method using a viewing system including a content distribution server for distributing a content, a portable information terminal, and a viewing device for reproducing the content, the method comprising:

, the portable information terminal sends the user identification information and the user password to the content distribution server;

a second step in which the content distribution server authenticates the portable information terminal based on the received user identification information and the user password;

a third step of transmitting, by the portable information terminal, an account issuance request for requesting issuance of an account for reproducing the required content to the content distribution server;

a fourth step in which the content distribution server issues an account based on the received account issuance request, and transmits the issued account to the portable information terminal;

a fifth step of storing the received account by the portable information terminal;

a sixth step in which the portable information terminal transmits the stored account by short-range wireless communication;

a seventh step of the audio-visual device storing the account received by the short range wireless communication; and

an eighth step of the audio-visual device performing playback of the requested content using the stored account.

2. A method for viewing content as defined in claim 1, wherein:

the content distribution server, the portable information terminal, and the audio-visual device are connected via a network,

in the eighth step, the viewing apparatus transmits the account to the content distribution server via the network to make a viewing request, and receives and reproduces the requested content transmitted by the content distribution server in response to the viewing request.

3. A method for viewing content as defined in claim 2, wherein:

in the sixth step, the portable information terminal continuously transmits the stored account by short-range wireless communication,

the viewing apparatus executes a ninth step when the reception of the account that is continuously transmitted is interrupted while the eighth step is executed, and in the ninth step, a viewing stop request is issued to the content distribution server via the network, and the content distribution server stops transmitting the requested content in response to the viewing stop request, thereby interrupting the reproduction of the requested content.

4. A method for viewing content as defined in claim 3, wherein:

the viewing apparatus executes a tenth step when the reception of the account is resumed after the ninth step is executed due to a break in the reception of the account that is continuously transmitted, and in the tenth step, transmits the account to the content distribution server via the network to make a viewing request, receives the requested content transmitted by the content distribution server in response to the viewing request, and resumes the interrupted playback of the requested content.

5. A method for viewing content as defined in claim 3, wherein:

using a second audio-visual device different from the audio-visual device, after the audio-visual device executes the ninth step, executing the following steps:

a tenth step of transmitting the stored account by the portable information terminal through the short-range wireless communication;

a twelfth step of the second audio-visual device storing the account received through the short-range wireless communication; and

a thirteenth step of transmitting the account to the content distribution server via the network by the second viewing device to make a viewing request, receiving the requested content transmitted by the content distribution server in response to the viewing request, and resuming the interrupted reproduction of the requested content.

6. A method for viewing content as defined in claim 5, wherein:

in the ninth step, the first step is performed,

the viewing apparatus further transmits viewing interruption information indicating a viewing interruption position or viewing interruption time of the requested content to the portable information terminal when the continuously transmitted reception of the account is interrupted, the portable information terminal storing the viewing interruption information,

in the tenth step, it is,

the portable information terminal further transmits the stored viewing interruption information to the second audio-visual device through the short-range wireless communication,

in the thirteenth step, in the case of the first step,

the second viewing device resumes the interrupted playback of the requested content from the viewing interruption position or the viewing interruption time based on the received viewing interruption information.

7. A method for viewing content as defined in claim 3, wherein:

the portable information terminal starts or stops transmission of the stored account by the short-range wireless communication in accordance with an operation by a user.

8. A method for viewing content as defined in claim 1, wherein:

the content distribution server is connected to the portable information terminal via a network, the content is encrypted and then broadcast from the content distribution server via a wireless to the audio-visual device,

the account includes key information for decrypting the content transmitted over the wireless ,

in the eighth step, the av device receives the requested content broadcast from the content distribution server by wireless , decrypts the requested content using the key information, and reproduces the requested content.

9. A method for viewing content as defined in claim 8, wherein:

in the eighth step, the first step is performed,

the av device receives, from the content distribution server, the associated information that includes a scramble key for decrypting the requested content and is encrypted, decrypts the associated information using the key information, decrypts the requested content using the scramble key extracted by decrypting the associated information, and reproduces the requested content.

10. A method for viewing content as defined in claim 9, wherein:

the related information comprises th related information, th related information comprises th related information, a second key required for decrypting the required content and is encrypted,

the av device decrypts the -th related information using the key information, decrypts the second related information using the -th key extracted by decrypting the -th related information, decrypts the requested content using the second key extracted by decrypting the second related information, and reproduces the requested content.

11. A method for viewing content as defined in claim 1, wherein:

the content distribution server is connected to the portable information terminal via a network, the content is encrypted and transmitted from the content distribution server to the audio-visual device used as a second audio-visual device and a th audio-visual device different from the audio-visual device via wireless broadcast,

transmitting th related information and second related information along with the content in the wireless broadcast, the th related information including a th key required for decrypting the content and being encrypted, the second related information including a second key and being encrypted,

the th audio-visual apparatus and the second audio-visual apparatus can utilize the th device and the second device installed respectively,

the th device storing a th ID associated with the user identification information and a th master key unique to the th device,

the content distribution server previously stores the th ID and the th master key,

in the fourth step, the content distribution server issues the th ID and the th master key as the account based on the received account issuance request, and transmits the issued account to the portable information terminal,

in the fifth step, the portable information terminal stores the ID and the master key as the account,

in the sixth step, the portable information terminal transmits the ID and the master key as the account by short-range wireless communication,

in the seventh step, the second audio-visual device stores the th ID and the th master key as the account,

in the eighth step, the second audiovisual device decrypts the th related information with the th master key contained in the account, decrypts the second related information with the th key retrieved by decrypting the th related information, decrypts the content with the second key retrieved by decrypting the second related information, so that reproduction of the content is enabled.

12, A portable information terminal used in a content viewing method using a viewing system including a content distribution server for distributing a content, the portable information terminal, and a viewing device for reproducing the content, the portable information terminal comprising:

a control section, a memory section, an th communication section for communicating with the content distribution server, a second communication section for communicating with the av device at a shorter communication distance than the th communication section, and an input section,

the memory section stores user identification information and a user password,

the control section transmits the user identification information and the user password to the content distribution server through the th communication section,

the control section transmits an account issuance request requesting issuance of an account for reproducing the requested content to the content distribution server via the th communication section,

the control section stores the account received from the content distribution server through the th communication section in the memory section,

the control section continuously or periodically transmits the account through the second communication section.

13. The portable information terminal according to claim 12, wherein:

at least of the starting, continuing, interrupting, or resuming can be achieved by a user operating via the input for the continuous or periodic transmission of the account by the second communication section.

14. The portable information terminal according to claim 12, wherein:

the control unit stores viewing interruption information in the memory unit when viewing interruption information indicating a viewing interruption position or viewing interruption time of the requested content is received from the viewing device via the second communication unit.

15. The portable information terminal according to claim 12, wherein:

the content distributed from the content distribution server is broadcasted to the th and second audiovisual devices via broadcast apparatuses after being encrypted, the th and second audiovisual devices being capable of decrypting the content using the th and second key information stored respectively,

the control part receives the same information as the th key information stored in the th av device from the content distribution server through the th communication part, stores it in the memory part as the account,

the control unit transmits the th key information to the second viewing device by the second communication unit continuously or periodically transmitting the account.

Technical Field

The present invention relates to a content distribution system for distributing a content to a viewing device (viewing device) connected to a network, and a content viewing system for viewing a content by using a viewing device capable of receiving broadcast waves.

Background

In the content distributed from a content distribution server connected via the internet and the content transmitted via a terrestrial broadcast or broadcast satellite, DRM (Digital Right Management: Digital rights protection) technology for controlling and restricting the use and copy of the content is used in order to protect the copyright of the content.

Thus, even if a content distributed or received in broadcasting is supplied to a different viewing device, the different viewing device does not have information unique to decrypting the content by removing the encryption, and therefore cannot decrypt the content, and can prevent the content from being viewed and copied, and as a method for decrypting the content only on the viewing device by using a key (key) which is information unique to the viewing device, there are a method for performing reproduction by matching with an identification code (user ID) of the viewing device read out on the viewing device, a method for performing decryption of the encrypted content by using the identification code (user ID) of the viewing device as a key, and a multiple encryption method for extracting the th other key (key) from information decrypted by using the key (key) of the viewing device, extracting the second other key (key) by using the extracted th other key (key) , and decrypting the encrypted content by using the second other key (key).

Further , there is proposed a content distribution system capable of distributing a content to other viewing devices in a rental form while protecting copyright by using the mechanism of the DRM technology, and patent document 1 describes, as examples, a content in which, if a content receiving apparatus of a lender acquires and stores the same content as a content held by a lender from the content distribution apparatus in advance, a content reproduction means of the content receiving apparatus of the lender reproduces the content stored by a content storage means based on rental authentication information, and thus the content can be freely rented.

Disclosure of Invention

Technical problem to be solved by the invention

However, patent document 1 does not particularly mention, for example, a case where a user holds a portable and easy-to-use portable information terminal of example as an authentication information transmission device, and is within a range where the user can view the content desired to be rented by a simple operation, and patent document 1 does not deal with a state or situation where the user views the rented content, for example, where the user holding the portable information terminal leaves the audiovisual device for some reason, the audiovisual device remains in a state of reproducing the rented content, and the user misses the rented content.

Patent document 1 does not describe anything about that the content broadcasted using electric wave is rented and viewed while protecting the copyright of the content in another viewing device that the user wants to use.

Therefore, it is desirable to provide types of content distribution systems and content viewing systems that can provide viewing environments with high convenience when a user having a portable information terminal views a content that is distributed or shows and is desired to rent, using a viewing device in the vicinity.

Means for solving the problems

aspects of the present invention provide a content viewing method using a viewing system including a content distribution server that distributes content, a portable information terminal, and a viewing device that reproduces content, the method performing the steps of , the portable information terminal transmitting user identification information and a user password to the content distribution server, a second step of authenticating the portable information terminal based on the received user identification information and user password by the content distribution server, a third step of transmitting an account issuance request requesting issuance of an account for reproducing the requested content to the content distribution server by the portable information terminal, a fourth step of transmitting the issued account to the portable information terminal based on the received account issuance request issuance of the account, a fifth step of storing the received account by the portable information terminal, a sixth step of transmitting the stored account by the portable information terminal by short-range wireless communication, a seventh step of storing the account received by the viewing device by the short-range wireless communication, and an eighth step of reproducing the requested content by the viewing device using the stored account.

Another aspects of the present invention provide portable information terminals for use in a content viewing method using a viewing system including a content distribution server for distributing content, a portable information terminal, and a viewing device for reproducing content, the portable information terminal including a control section, a memory section, a th communication section for communicating with the content distribution server, a second communication section for communicating with the viewing device at a shorter communication distance than a th communication section, and an input section, the memory section storing user identification information and a user password, the control section transmitting the user identification information and the user password to the content distribution server through the th communication section, the control section transmitting an account issuance request for requesting issuance of an account for reproducing the requested content to the content distribution server through the th communication section, the control section storing the account received from the content distribution server through the th communication section in the memory section, and the control section continuously or periodically transmitting the account through the second communication section.

Effects of the invention

In the case where a user having a portable information terminal views a content which is distributed or broadcast and desired to be rented using a viewing device in the vicinity, a viewing environment with high convenience can be obtained.

Drawings

Fig. 1 is a block diagram showing a configuration example of a content distribution system.

Fig. 2A is a diagram showing a first half of an example of the operation flow of the content distribution system shown in fig. 1.

Fig. 2B is a diagram showing the second half of the operation flow example of the content distribution system shown in fig. 1.

Fig. 3 is a diagram illustrating an example of operation processing of the operation input section of the content distribution system shown in fig. 1.

Fig. 4 is a diagram illustrating an example of the action of the content distribution system.

Fig. 5 is a diagram showing another example of the operation flow of the content distribution system shown in fig. 1.

Fig. 6 is a block diagram showing a configuration example of the content viewing system.

Fig. 7A is a diagram showing a first half of an example of the operation flow of the content viewing system shown in fig. 6.

Fig. 7B is a diagram showing the second half of the operation flow example of the content viewing system shown in fig. 6.

Fig. 8 is a block diagram showing another configuration example of the content viewing system.

Fig. 9A is a diagram showing a first half of an example of the operation flow of the content viewing system shown in fig. 8.

Fig. 9B is a diagram showing the second half of the operation flow example of the content viewing system shown in fig. 6.

Detailed Description

Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. In the structure of the invention described below, the same portions or portions having the same functions may share the same reference numerals between different drawings, and redundant description thereof may be omitted.

The expressions "", "second", "third", and the like described in this specification and the like are used only for identifying the constituent elements, and are not limited to in terms of the number, the order, or the content thereof, and the numbers for identifying the constituent elements are used for each related paragraph, and the numbers used in related paragraph do not indicate the same configurations as in other related paragraph articles.

of the embodiment is a content distribution system in which a content distribution server, a portable information terminal, and an audiovisual device are connected via a network, the content distribution system characterized in that the portable information terminal transmits user identification information and a user password to the content distribution server, the content distribution server authenticates the portable information terminal based on the received user identification information and the user password, the portable information terminal transmits content identification information and an account issuance request for identifying a content program desired to be viewed to the content distribution server, the content distribution server issues an account including the content identification information based on the received content identification information and the account issuance request, and transmits the issued account to the portable information terminal, the portable information terminal transmits the received account to the audiovisual device using short-range wireless communication, the audiovisual device transmits the viewing request of the content program to the content distribution server together with the received account , the content distribution server performs content distribution of the content program to the audiovisual device based on the account, the audiovisual device enables viewing of the distributed content, and in an application mode of the portable information terminal, the audiovisual device continuously transmits the content transmission request to the content distribution server using the short-range wireless communication, and the audiovisual device interrupts the viewing of the transmitted account.

Another embodiment is a content viewing system configured using a portable information terminal, a viewing apparatus, and an broadcast-side apparatus including a content program distribution server, the portable information terminal transmits user identification information and a user password to the content distribution server, the content distribution server authenticates the portable information terminal based on the received user identification information and the user password, the portable information terminal transmits content identification information and an account issuance request for identifying a broadcast content program or a broadcast channel desired to be viewed to the content distribution server, the content distribution server issues an account including key information required to release encryption of a 634 broadcast content program or a broadcast channel based on the received content identification information and the account issuance request, transmits the issued account to the portable information terminal, the portable information terminal transmits the received account to the viewing apparatus using short-range wireless communication, the broadcast-side apparatus transmits the broadcast content program or a broadcast channel and related information including a scrambling key (scramblekey) for releasing encryption of a broadcast content program or a broadcast channel, and the encrypted content program or the broadcast content distribution information is extracted from the portable information terminal using the scrambling key (encryption key), and the decryption key information is used for enabling the viewing information to be decrypted by the decryption of the encryption key (7342).

The above-mentioned content program is not necessarily program units but may be channel units or category or group units, and according to the technique described in the embodiment, a user can acquire an account for viewing content on the portable information terminal, transfer the account to an audio/video device having a function of outputting images and sounds as necessary, and view the content on the audio/video device, and further, the portable information terminal and the audio/video device can detect that they are close to each other by confirming the continuous reception of the account, and control the interruption and resumption of the content reproduction.

The details will be described below.