JP2010178190A - Data display device and data display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data display device and method achieving linked data broadcasting by an HTML (Hyper Text Markup Language) by using a BML (Broadcast Markup Language) browser and an HTML browser without changing BML and HTML specifications and a data transmission system. <P>SOLUTION: The BML browser receives an event message including timing control information of BML contents by data broadcasting, and subsequently transmits a command to the HTML browser in accordance with the timing of the event message and the BML browser controls the HTML browser. HTML contents are shown as linked data broadcast contents closely relating the HTML contents to data broadcasting. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a data display apparatus and a data display method for displaying data received via a broadcast system and a network.

  In digital broadcasting, data broadcasting in which various text information and interactive services are added to conventional video / audio contents is transmitted. The program-linked data broadcast displays data related to a program (video / audio) in synchronization with the video / audio, and is multiplexed with a video / audio stream and transmitted. In data broadcasting, a transmission method used for a storage-type service called carousel is used, and a data display device that receives data broadcasting and displays it on the screen acquires data from the data broadcasting that is broadcast at a fixed period. The method of doing is taken.

  In Japanese data broadcasting, ARIB (Association of Radio Industries and Broadcast) defines BML (Broadcast Markup Language) as a description language for data broadcasting. BML is a markup language similar to HTML (HyperText Markup Language). In addition to describing screens composed of text, graphics, photos, etc., for example, for data broadcasting such as synchronization with video and audio. It has a mechanism. A data display device that receives a data broadcast and displays it on a screen is equipped with software called a BML browser in order to reproduce content described in BML.

  BML is basically considered to incorporate HTML technology standardized by the World Wide Web (WWW) for broadcasting, but is not compatible with HTML. Therefore, it is not possible to browse the homepage of the Internet as it is using the BML browser. An HTML browser is required to browse Internet homepages.

  For example, in order to associate content created in BML with content created in HTML, in a method for producing TV flyer program data using data broadcasting, document data for each flyer is recorded and managed in a document database, and BML A BML template for creating TV flyer program data as a data file and an HTML template for allowing the appearance of a TV flyer to be confirmed in advance on a computer screen are prepared for each flyer layout pattern. A TV flyer production method has been devised in which the appearance of a TV flyer is confirmed by a WWW browser of a computer by reading this data into the HTML template after inputting the document data. (See Patent Document 1.)

Japanese Patent Laid-Open No. 2003-233749

  BML is a language created for broadcasting without compatibility with HTML. With respect to describing the screen, HTML is more sophisticated, and if it is possible to describe linked data broadcasting in HTML, more advanced and attractive content can be realized. Moreover, HTML is advantageous in terms of development environment, number of developers, and amount of developed assets. However, HTML does not have a mechanism for controlling data broadcasting that BML has to display data related to programs (video and audio) in synchronization with video and audio. It is difficult to realize.

  A simple way to solve the above problem is to add a function created for BML broadcasting to HTML, but to do so, a new dedicated language must be designed. In addition, an HTML browser corresponding to such extended HTML is required, and it is necessary to mount it in the data display device.

  Furthermore, in order to multiplex and transmit such data described in HTML with video / audio of a program, the current transmission method based on BML cannot be used as it is, and both the transmission side and the reception side are new. It becomes necessary to support the method.

  The present invention has been made in view of the circumstances as described above, and does not change the specifications and data transmission methods of BML and HTML, and uses the BML browser and the HTML browser to link the linked data by HTML. An object is to provide a data display device and a data display method for realizing broadcasting.

  In order to achieve the above object, the data display device of the present invention is connected via a communication line to a first browser that receives and interprets a first type of content that is transmitted by the carousel method and includes timing control information. A second browser for acquiring and interpreting a second type of content placed on the server, wherein the first browser is based on timing control information included in the first type of content Command sending means for sending a command to the second browser at a timing, and the second browser has command receiving means for receiving the command, and receives the second content in response to the command It is characterized by interpretation.

  In addition, the data display method of the present invention is installed on a server connected via a communication line with a first browser that receives and interprets a first type of content that is transmitted by the carousel method and includes timing control information. A second browser for acquiring and interpreting the second type of content, and the second browser at a timing based on timing control information included in the first type of content. A command transmission step for transmitting a command to the second browser, a command reception step for the second browser to receive the command, and a step for receiving and interpreting the second content in response to the command. To do.

  According to the present invention, linked data broadcasting by HTML can be realized using a BML browser and an HTML browser without changing the specifications and data transmission methods of BML and HTML.

The block diagram which shows the structure of the Example of the data display apparatus by this invention. The block diagram which shows the structure of the program of a content reception display process. The flowchart of a process of a BML browser. The flowchart of a process of an HTML browser. The figure which showed the specific example of the analysis process of a BML document implemented with a BML browser.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an embodiment of a data display device 1 according to the present invention. Specifically, the data display device 1 has a function of receiving digital broadcasts, and is connected to the Internet 18 via the transmission / reception unit 17 and has a function of receiving content from a content distribution server on the network.

  The antenna 3 is an antenna for terrestrial digital broadcasting or satellite digital broadcasting for receiving broadcast radio waves transmitted from the broadcasting station 2. The tuner 4 demodulates the broadcast radio video signal and audio signal received by the antenna 2 and converts them into an MPEG2 transport stream.

  The demultiplexer 5 separates multiplexed signals, and separates video signal, audio signal, and data broadcast packets from the transport stream sent from the tuner 4. The video / audio decoder 6 decodes the MPEG2 stream data of the video signal separated by the demultiplexer 5 into video data or decodes the audio signal into audio data. Also, the data broadcasting signal is decoded into system data.

  The video processing unit 7 converts the digital video data input from the video / audio decoder 6 into a format that can be displayed on the display device 9 or arbitrarily adjusts the display color, and outputs it to the display device 9. To display the image. The audio processing unit 8 converts the digital audio data input from the video / audio decoder 6 into an analog audio signal that can be reproduced by the speaker 10, and then outputs the analog audio signal to the speaker 10 to reproduce the audio.

  In the data display device 1, all the operations including the above-described reception operation are comprehensively controlled by a CPU (Central Processing Unit) 12. The demultiplexer 5, the video / audio decoder 6, the video processing unit 7, and the audio processing unit 8 are connected to the CPU 12 via the data bus 11.

  A RAM (Random Access Memory) 13 is a read / write memory that stores various data necessary for the data processing of the CPU 12, and operates as a buffer memory that stores stream data. A ROM (Read Only Memory) 14 is a read only memory and stores a control program executed by the CPU 12.

  The system data of the data broadcast decoded by the video / audio decoder 6 is stored in the RAM 13 via the data bus 11. As will be described later, the CPU 12 acquires BML data based on the reception display program, generates display data from the BML data, and writes the display data in the RAM 13.

  The operation receiving unit 15 receives an operation signal transmitted from the operation unit 16 and transfers the operation signal to the CPU 12. The operation unit 16 is, for example, a remote controller using wireless communication using infrared rays, a wired or wireless mouse, a keyboard, and the like, and sends an operation signal. The operation receiving unit 15 receives operation signals from the remote controller, mouse, keyboard, and the like.

  The data display device 1 is connected to the Internet 18 via the transmission / reception unit 17. Thereby, the data display device 1 can perform information transmission via the transmission / reception unit 17 with a device such as a content distribution server on the network.

  FIG. 2 is a block diagram illustrating a configuration of a program for content reception display processing of the data display device 1. The data display device 1 simultaneously operates the BML browser 20 as the first browser and the HTLM browser browser 21 as the second browser.

  The BML browser 20 acquires the BML content broadcast by the data carousel method from the broadcasting station 2 by the BML content acquisition unit 22 that acquires the BML content that is the content of the first format, and stores the BML content in the RAM 13. Next, the BML browser 20 analyzes the BML content by the BML content analysis unit 23.

  Next, the BML browser 20 extracts the event message by the event message extracting means 24. Then, the BML browser 20 sends a command to the HTML browser by the command sending means 25 at a timing based on the timing control information included in the BML content.

  The HTML browser 21 acquires HTML content from a server connected to the Internet by HTML content acquisition means 26 that acquires HTML content that is content of the second format. Next, the HTML browser 21 analyzes and interprets the HTML content by the HTML content analysis means 27. Then, the HTML browser 21 generates display content in the display content generation means 28, displays an image on the display device 9, and generates sound from the speaker 10.

  The HTML browser 21 receives a command from the BML browser 20 by the command receiving unit 29. The HTML browser 21 receives and interprets HTML content in response to a command from the BML browser 20, and executes processing in accordance with the command from the BML browser 20.

  After the BML browser 20 receives the event message including the timing control information of the BML content by data broadcasting, the BML browser 20 sends a command to the HTML browser 21 in accordance with the timing of the event message, and the BML browser 20 The HTML browser 21 is controlled. By doing so, the HTML content can be viewed as linked data broadcast content that is closely associated with the data broadcast.

  Although it is assumed that the BML browser 20 and the HTML browser 21 are activated at the same time, the BML browser 20 does not display anything on the display device 9, and the HTML browser 21 receiving the instruction from the BML browser 20 exclusively transmits to the display device 9. It can also be displayed.

  The command transmitted from the BML browser 20 to the HTML browser 21 may be equivalent to an event for notifying an operation signal for operating the HTML browser 21. In this case, as a method for the HTML browser 21 to receive a command from the BML browser 20, an operation signal issued by the HTML browser 21 from the operation unit 16, for example, an event such as movement or determination of the cursor up / down / left / right by the remote controller What is necessary is just to make it receive as a command similar to the command by the operation signal of the same format. By doing so, it is not necessary to construct a new mechanism for receiving commands from the BML browser 20 in the HTML browser 21.

  FIG. 3 is a flowchart of processing of the BML browser 20. In S <b> 10, the CPU 11 activates the BML browser 20. That is, the CPU 11 activates the application of the BML browser 20 stored in the ROM 14.

  In S <b> 11, the BML browser 20 acquires BML content broadcast from the broadcasting station 2 by the data carousel method, and accumulates the BML content in the RAM 13. In S 12, the BML browser 20 analyzes the BML content document stored in the RAM 13. A specific example of the BML document analysis process will be described later.

  In S13, the BML browser 20 extracts timing control information from the result of analyzing the BML content document, and generates a correspondence list of event actions. In S14, the BML browser 20 acquires the current time.

  In S15, the BML browser 20 determines whether the firing time of any event on the event action correspondence list based on the timing control information has come. If it is determined that the firing time of any event has come, the process moves to S16 to execute an action. When it is not the ignition time, the process returns to S14 to acquire the current time.

  In S17, the BML browser 20 transmits a command to the HTML browser 21, moves to S14, and acquires the current time. After the BML browser 20 receives the event message of the BML content by data broadcasting, the BML browser 20 sends a command to the HTML browser 21 in accordance with the timing of the event message.

  FIG. 4 is a flowchart of the processing of the HTML browser 21. In S <b> 20, the CPU 11 activates an HTML browser application stored in the ROM 14.

  In S <b> 21, the HTML browser 21 acquires HTML content from a server connected to the Internet 18. Specifically, a device such as the content distribution server 30 prepared by the broadcasting station 2 connected to the Internet 18 is accessed via the transmission / reception unit 16 to request a desired HTML content, and the content distribution server 30 or the like. Receive HTML content from the device. The broadcasting station 2 stores linked data broadcast content linked to data broadcasting in a device such as the content distribution server 30.

  In S22, the HTML browser 21 analyzes the acquired HTML content, and generates screen display content in S23. Also, audio data is generated, and screen display and audio are generated in S24.

  In S <b> 25, the HTML browser 21 waits for a command from the BML browser 20 or an operation instruction from the operation receiving unit 15. In S26, it is determined whether a command of the BML browser 20 has been received. If it is determined that the command has been received, the process proceeds to S27 to execute processing according to the command from the BML browser 20. If it is determined that the command is not the command of the BML browser 20, the process proceeds to S28 to execute processing according to the operation. For example, it is assumed that the user operates the remote controller and gives an instruction to move the cursor.

  In S29, the HTML browser 21 determines whether screen transition is necessary. It is determined by the command of the BML browser 20 whether it is necessary to transition to another URL (Uniform Resource Locator). If it is determined that the transition is necessary, the process proceeds to S21, and the transition destination HTML content is acquired. If it is determined that the transition is not necessary, the process proceeds to S25 to wait for a command from the BML browser 20 or an operation instruction from the operation receiving unit 15.

  The HTML browser 21 transitions to a URL at a timing instructed by the BML browser 20 by a command from the BML browser 20, and the HTML content for linked data broadcasting linked to the data broadcasting prepared by the broadcasting station 2 is sent to the content distribution server 30. Are displayed on the display device 9 and sound is generated from the speaker 10.

  FIG. 5 is a diagram showing a specific example of the BML document analysis process executed by the BML browser 20. Parts that are not necessary for the explanation are omitted. BML provides a mechanism for interlocking content called “bevent”, and has a mechanism for describing a target of interlock called “beitem” in a child element of “bevent”.

  In the example of FIG. 5, the BML document includes three beitem elements, each of which associates an event with an action. The first beitem element means that when an event message with id 16 is fired, the action “Action1” described in the onoccur attribute should be executed. The onoccur attribute describes a character string that specifies a procedure to be executed when an interrupt event occurs. Similarly, the second beitem element means that the action “Action2” should be executed when an event message whose id is 32 is fired.

  Here, the firing time of the target event message is not described in the BML document, but the time is described in the event message multiplexed and transmitted in the data broadcast stream, and the BML browser 20 is designated. The firing time can be obtained by reading the time information from the event message having the id value. Details are described in the standard (data broadcasting encoding method and transmission method in RIB STD-B24 digital broadcasting), and details are not described here.

  The third beitem element is an example of using an event of “TimerFired” type instead of an event of type = “EventMessageFired” type as in the first and second. In this type of event, the firing time is included in the BML document. Described. In this example, it is 0:00:00 on January 1, 2011. However, it does not change from the first and second in the meaning of associating an event with an action, and indicates that action Action3 should be executed when this event is fired.

  Now, Action1, Action2, and Action3 specified by these beitem elements are described in the parts surrounded by “function Action1”, “function Action2”, and “function Action3” in FIG. Each has a specific definition. That is, the specific content of Action1 is to execute a process of browser.sendCommand ("OpenWindow", 100, 100, 320, 240); which is a width 320 in the coordinates (100, 100) on the HTML browser screen. In this example, a command requesting to open a window having a height of 240 is transmitted.

  Similarly, the specific content of Action2 is to send a command “Cursor_UP” to the HTML browser, and is an example of requesting that the cursor be moved upward on the HTML browser screen.

  The specific content of Action3 is to execute the following process: browser.sendCommand ("TransitionTo", "http://www.happy-new-year.com"); In this example, a command requesting a transition to the URL “http://www.happy-new-year.com” is transmitted.

  As described above, in the data display device 1, the BML browser 20 and the HTML browser 21 are activated, the data broadcast described in BML is received, and the information for synchronizing with the program (video / audio) in the BML browser 20. The BML browser 20 sends a command to the HTML browser 21 at a timing based on the synchronization information. The HTML browser 21 accesses the content distribution server 30 (Web server) prepared by the broadcasting station 2 at the timing instructed by the BML browser 20 to acquire HTML content (linked data screen), and the display device of the data display device 1 9 is displayed. Further, the contents of the displayed screen are changed at the timing instructed from the BML browser 20. When the HTML browser 21 is displaying, the BML browser 20 does not need to display on the screen.

  In this way, general HTML contents on the Internet can be linked data broadcast contents without making major changes to the BML browser 20 for data broadcasting and the HTML browser 21 which is a WWW browser. Can be displayed.

  The present invention is not limited to the above-described configuration, and various modifications can be made.

DESCRIPTION OF SYMBOLS 1 Data display apparatus 2 Broadcasting station 3 Antenna 4 Tuner 5 Demultiplexer 6 Video audio decoder 7 Video processing part 8 Audio processing part 9 Display apparatus 10 Speaker 11 Data bus 12 CPU
13 RAM
14 ROM
DESCRIPTION OF SYMBOLS 15 Operation reception part 16 Operation part 17 Transmission / reception part 18 Internet 20 BML browser 21 HTML browser 22 BML content acquisition means 23 BML content analysis means 24 Event message extraction means 25 Command transmission means 26 HTML content acquisition means 27 HTML content analysis means 28 Display content Generation means 29 Command reception means 30 Content distribution server

Claims (7)

A first browser that receives and interprets a first type of content that is transmitted in a carousel manner and includes timing control information;
A second browser for acquiring and interpreting a second type of content placed on a server connected via a communication line;
The first browser has command transmission means for transmitting a command to the second browser at a timing based on timing control information included in the first type of content;
The data display device, wherein the second browser has command receiving means for receiving the command, and receives and interprets the second content according to the command. The first type of content is content described in BML,
2. The data display device according to claim 1, wherein the content in the second format is content described in HTML. The first browser is a BML browser;
3. The data display device according to claim 1, wherein the second browser is an HTML browser.   2. The data display apparatus according to claim 1, wherein the command transmitted from the first browser to the second browser is equivalent to an event for notifying an operation signal for operating the second browser. A first browser that receives and interprets a first type of content that is transmitted in a carousel manner and includes timing control information;
A second browser for acquiring and interpreting a second type of content placed on a server connected via a communication line;
A command transmission step in which the first browser transmits a command to the second browser at a timing based on timing control information included in the content of the first type;
A data display method comprising: a command receiving step in which the second browser receives the command; and a step of receiving and interpreting the second content in response to the command. The first type of content is content described in BML,
6. The data display method according to claim 5, wherein the content in the second format is content described in HTML. The first browser is a BML browser;
The data display method according to claim 5 or 6, wherein the second browser is an HTML browser.

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