The present invention provides a digital broadcast receiver capable of executing functions having higher added values. The broadcast receiver receives a broadcast wave of a digital broadcast service, controls an operation including activation and end of an application that is in cooperation with a broadcast program based on application-related information, and selects control relating to reactivation of the application based on a user's operation. If activation of the application is requested after the end of the application, the broadcast receiver controls the reactivation or non-reactivation of the application in accordance with the selection of control by the user.

The present invention provides a digital broadcast receiver capable of executing functions having higher added values. The broadcast receiver receives a broadcast wave of a digital broadcast service, controls an operation including activation and end of an application that is in cooperation with a broadcast program based on application-related information, and selects control relating to reactivation of the application based on a user's operation. If activation of the application is requested after the end of the application, the broadcast receiver controls the reactivation or non-reactivation of the application in accordance with the selection of control by the user.

A multimedia file and methods of generating, distributing and using the multimedia file are described. Multimedia files in accordance with embodiments of the present invention can contain multiple video tracks, multiple audio tracks, multiple subtitle tracks, a complete index that can be used to locate each data chunk in each of these tracks and an abridged index that can enable the location of a subset of the data chunks in each track, data that can be used to generate a menu interface to access the contents of the file and meta data concerning the contents of the file. Multimedia files in accordance with several embodiments of the present invention also include references to video tracks, audio tracks, subtitle tracks and meta data external to the file. One embodiment of a multimedia file in accordance with the present invention includes a series of encoded video frames, a first index that includes information indicative of the location within the file and characteristics of each encoded video frame and a separate second index that includes information indicative of the location within the file of a subset of the encoded video frames.

A multimedia file and methods of generating, distributing and using the multimedia file are described. Multimedia files in accordance with embodiments of the present invention can contain multiple video tracks, multiple audio tracks, multiple subtitle tracks, a complete index that can be used to locate each data chunk in each of these tracks and an abridged index that can enable the location of a subset of the data chunks in each track, data that can be used to generate a menu interface to access the contents of the file and meta data concerning the contents of the file. Multimedia files in accordance with several embodiments of the present invention also include references to video tracks, audio tracks, subtitle tracks and meta data external to the file. One embodiment of a multimedia file in accordance with the present invention includes a series of encoded video frames, a first index that includes information indicative of the location within the file and characteristics of each encoded video frame and a separate second index that includes information indicative of the location within the file of a subset of the encoded video frames.

A method and system is provided for displaying and updating electronic information on a display device. In an exemplary aspect, the method includes storing first and second digital information relating to first and second products, respectively, and transmitting this information to a display device to be displayed thereon by user interface pages navigable by a user. Moreover, the method includes determining a current page that is being displayed on the display device and determining whether either the first digital information or the second digital information product is being displayed on the current page. When the current page is displaying the first digital information, the method transmits unscheduled updates of the first digital information, such that the current page dynamically displays updated first digital information. Alternatively, when the current page is not displaying the second digital information, the method transmits scheduled updates of the second digital information.

A method and system is provided for displaying and updating electronic information on a display device. In an exemplary aspect, the method includes storing first and second digital information relating to first and second products, respectively, and transmitting this information to a display device to be displayed thereon by user interface pages navigable by a user. Moreover, the method includes determining a current page that is being displayed on the display device and determining whether either the first digital information or the second digital information product is being displayed on the current page. When the current page is displaying the first digital information, the method transmits unscheduled updates of the first digital information, such that the current page dynamically displays updated first digital information. Alternatively, when the current page is not displaying the second digital information, the method transmits scheduled updates of the second digital information.

A content source comprising a processor configured to generate a media presentation description (MPD) file, wherein the MPD file designates a dependent media content part to be assigned to at least one depended media content part, and wherein the MPD file indicates the dependent media content part is to be accessed by a client device when an access condition for the dependent media content part is satisfied, and a transmitter operably coupled to the processor and configured to transmit the MPD file to at least one of a content server, a control server, and the client device.

A content source comprising a processor configured to generate a media presentation description (MPD) file, wherein the MPD file designates a dependent media content part to be assigned to at least one depended media content part, and wherein the MPD file indicates the dependent media content part is to be accessed by a client device when an access condition for the dependent media content part is satisfied, and a transmitter operably coupled to the processor and configured to transmit the MPD file to at least one of a content server, a control server, and the client device.

Technology to provide quality of experience aware multimedia streaming is disclosed. In an example, a server operable to provide hyper-text transfer protocol (HTTP) adaptive streaming, can include computer circuitry configured to: determine a bandwidth available to the server for transmitting HTTP adaptive streaming content to a plurality of clients; receive HTTP requests from the plurality of clients for representations offered by the server in a manifest file for the HTTP adaptive streaming; and calculate an availability of each representation that is offered in the manifest file for the server. The availability can be calculated, at least in part, based on the determined bandwidth. The availability of each representation can be communicated from the server to the plurality of clients.

Technology to provide quality of experience aware multimedia streaming is disclosed. In an example, a server operable to provide hyper-text transfer protocol (HTTP) adaptive streaming, can include computer circuitry configured to: determine a bandwidth available to the server for transmitting HTTP adaptive streaming content to a plurality of clients; receive HTTP requests from the plurality of clients for representations offered by the server in a manifest file for the HTTP adaptive streaming; and calculate an availability of each representation that is offered in the manifest file for the server. The availability can be calculated, at least in part, based on the determined bandwidth. The availability of each representation can be communicated from the server to the plurality of clients.