Receiving device, receiving method, transmitting device, and transmitting method

Patent metadata

Field	Value
Publication number	US-11528539-B2
Application number	US-201514916507-A
Country	US
Kind code	B2
Filing date	Jul 17, 2015
Priority date	Aug 1, 2014
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A receiving device, a receiving method, a transmitting device, and a transmitting method. The receiving device acquires a digital broadcast signal that includes audio-video (AV) content and location information, the location information indicating a source from which application control information for controlling an operation of an application executed in conjunction with a progressing timing of the AV content is obtainable, acquires the application control information from the source indicated by the location information, the application control information including an application ID and a uniform resource locator (URL), obtains, from the URL included in the acquired application control information, control information during a polling period that is defined in accordance with an attribute specified in the acquired application control information, and controls the operation of the application based on the acquired application control information and the obtained control information.

First claim

The invention claimed is:

1. A receiving device comprising:
circuitry configured to
acquire a digital broadcast signal that includes audio-video (AV) content and location information, the location information indicating a source from which application control information for controlling an operation of an application executed in conjunction with a progressing timing of the AV content is obtainable;
acquire the application control information from the source indicated by the location information, the application control information including an application ID and a uniform resource locator (URL);
obtain, from the URL included in the acquired application control information, control information during a polling period that is defined in accordance with an attribute specified in the acquired application control information; and
control the operation of the application based on the acquired application control information and the obtained control information.

2. The receiving device according to claim 1 , wherein
the digital broadcast signal includes time information serving as a reference of a time to control the operation of the application, and
the circuitry is configured to
acquire schedule control information in which the operation of the application is prescribed in a time series; and
control the operation of the application based on action information for the application corresponding to a time when a time counted based on the time information passes through a time prescribed in the schedule control information.

3. The receiving device according to claim 2 , wherein
the application is constituted by a plurality of files, and
the circuitry is configured to
acquire cache control information for controlling a cache of a file group constituting the application; and
store the file group constituting the application in a cache memory based on the cache control information.

4. The receiving device according to claim 3 , wherein
the digital broadcast signal includes editing information for editing details prescribed in the schedule control information, and
the circuitry is configured to edit the schedule control information based on the editing information.

5. The receiving device according to claim 1 , wherein
the circuitry is configured to
acquire schedule control information in which the operation of the application is prescribed in a time series; and
acquire cache control information for controlling a cache of a file group constituting the application,

the location information indicates the source from which the schedule control information or the cache control information is obtainable, and
the application control information, the schedule control information, and the cache control information are correlated by identification information of the application.

6. The receiving device according to claim 1 , wherein
the digital broadcast signal includes action information for the application, and
the circuitry is configured to control the operation of the application based on the action information when the action information is acquired.

7. The receiving device according to claim 6 , wherein
the application is constituted by a plurality of files, and
the circuitry is configured to
acquire cache control information for controlling a cache of a file group constituting the application; and
store the file group constituting the application in a cache memory based on the cache control information.

8. The receiving device according to claim 1 , wherein
the circuitry is configured to acquire cache control information for controlling a cache of a file group constituting the application,
the location information further indicates the source from which the cache control information is obtainable, and
the location information, the application control information, and the cache control information are correlated by identification information of the application.

9. A receiving method of a receiving device, the receiving method comprising:
acquiring a digital broadcast signal that includes audio-video (AV) content and location information, the location information indicating a source from which application control information for controlling an operation of an application executed in conjunction with a progressing timing of the AV content is obtainable;
acquiring the application control information from the source indicated by the location information, the application control information including an application ID and a uniform resource locator (URL);
obtaining, from the URL included in the acquired application control information, control information during a polling period that is defined in accordance with an attribute specified in the acquired application control information; and
controlling the operation of the application based on the acquired application control information and the obtained control information.

10. A transmitting device comprising:
circuitry configured to
generate application control information for controlling an operation of an application executed in conjunction with a progressing timing of audio-video (AV) content, the application control information including an attribute that defines a polling period specifying a timing for obtaining control information for controlling the operation of the application, and the application control information including an application ID and a uniform resource locator (URL) for obtaining the control information; and
generate location information indicating a source from which the application control information is obtainable; and

a transmitter configured to transmit a digital broadcast signal that includes the AV content and the location information.

11. The transmitting device according to claim 10 , wherein
the circuitry is configured to
generate schedule control information in which the operation of the application is prescribed in a time series; and
generate cache control information for controlling a cache of a file group constituting the application,

the location information indicates the source from which the schedule control information or the cache control information is obtainable, and
the application control information, the schedule control information, and the cache control information are correlated by identification information of the application.

12. A transmitting method of a transmitting device, the transmitting method comprising:
generating application control information for controlling an operation of an application executed in conjunction with a progressing timing of audio-video (AV) content, the application control information including an attribute that defines a polling period specifying a timing for obtaining control information for controlling the operation of the application, and the application control information including an application ID and a uniform resource locator (URL) for obtaining the control information;
generating location information indicating a source from which the application control information is obtainable; and
transmitting a digital broadcast signal that includes the AV content and the location information.

13. The receiving device according to claim 1 , wherein the circuitry includes:
a digital broadcast signal receiver configured to receive the digital broadcast signal; and
a communication interface configured to acquire the application control information from the source, which is a server accessible over a network as indicated by the location information included in the received digital broadcast signal.

14. The receiving device according to claim 1 , wherein

Assignees

• Saturn Licensing Llc

Inventors

• Kitazato Naohisa
• Dewa Yoshiharu
• Kitahara Jun

Classifications

• H04N21/8547

  involving timestamps for synchronizing content · CPC title

• H04N21/8543

  using a description language, e.g. Multimedia and Hypermedia information coding Expert Group [MHEG], eXtensible Markup Language [XML] {(information retrieval of semistructured data, the underlying structure being taken into account, e.g. mark-up language structure data G06F16/80)} · CPC title

• H04N21/8456

  by decomposing the content in the time domain, e.g. in time segments · CPC title

• H04N21/435

  Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream · CPC title

• H04H60/13

  Arrangements for device control affected by the broadcast information · CPC title