JP2005176137A - Digital broadcast receiver, digital broadcast receiving method, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver capable of realizing printing service at a timing desired by a broadcast station. <P>SOLUTION: When a message processing means 101 receives a print event descriptor, a print request interruption is generated on the basis of mapping of the print event descriptor and an interruption I/F, and is supplied to an interruption event queue. An interruption processing means 500 performs print processing for data to be printed which are specified via a DOM-API202 on the basis of the print request interruption. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a digital broadcast receiving apparatus, a digital broadcast receiving method, a program, and a storage medium that receive and display broadcast data transmitted from a broadcast station.

  In BS digital broadcasting, an MPEG-2 transport stream is used as a transmission method, and video data, audio data, data used in data broadcasting as program data, subtitles for displaying characters superimposed on television broadcasting video, The character super data is transmitted in a packet called a TS packet. The contents of the MPEG-2 transport stream are described in ISO / IEC13818-1. Examples of data handled by the data broadcasting include a bml (Broadcast Markup Language) document described in a data broadcasting content description language, and monomedia data such as a moving image, a still image, a sound, and a character referred to by the bml document. These data are repeatedly transmitted from a broadcasting station by a data carousel system defined by ISO / IEC13818-6. The data carousel system transmits one component ES, and the component ES is composed of a plurality of modules, and the modules are composed of one or more resources. A resource is a bml document or monomedia data. Data broadcast data transmitted in one program is composed of a plurality of components ES. Some component ESs are transmitted by an event message method in addition to the data carousel method. The event message method is used for synchronous / asynchronous message notification from a broadcast station for an application operating on a digital broadcast receiving apparatus.

  FIG. 19 shows a block diagram of the data broadcast receiving apparatus. Broadcast data transmitted from a broadcast station is received via an antenna (not shown) and the like, and is separated into audio data, video data, and data broadcast data by the data separation means 1. The video data separated in the data separation means 1 is expanded / restored by the video processing means 2 and then delivered to the overlay processing means 5. The audio data separated by the data separation means 1 is reproduced from the speaker 7 after being decompressed and restored by the sound processing means 3. The data broadcast data separated in the data separation means 1 is converted into data that can be displayed on the screen by the data processing means 4 and then passed to the overlay processing means 5. Here, the data broadcast data is monomedia data including a bml document described by bml, which is one of structured documents, and a still image and a moving image for reference by the bml document. The overlay processing means 5 performs an overlay process for arranging the video data converted into displayable data and the data broadcast data on one screen. The display screen data processed by the overlay processing means 5 is displayed on the monitor 6.

  Next, the configuration of the data processing means 4 will be described with reference to FIG. FIG. 20 is a block diagram showing the configuration of the data processing means 4 of FIG.

  As shown in FIG. 20, the data processing means 4 handles a bml document, which is a structured document, and mono-media data referred to by the bml document as data broadcast data. Monomedia data includes JPEG, PNG and MNG as still images, MPEG1 and MPEG2 as moving images, MPEG2-AAC and AIFF as audio, and 8-unit codes as text. These data are transmitted via the monomedia processing means 204. And is delivered to the drawing processing means 400 or the speaker 7. The bml document is passed to the parser 201 which is a structured document interpretation unit. The parser 201 analyzes the bml document and generates internal data called a DOM object that holds the document structure. The parser 201 analyzes the style information described in the bml document to obtain CSS characteristics, This is a part of the DOM object. The CSS characteristic is a characteristic for designating the arrangement, background color, focus movement destination, etc. of each element in the bml document. The DOM object holds the structure information of the bml document and the attribute information of each element in addition to the CSS characteristics, and the attribute information is a user definition that is activated by designating display / non-display of the element and interruption There is a function specification. The DOM-API 202 is a document structure interface for acquiring / changing attribute information and CSS characteristic values of a DOM object. The composition processing unit 203 generates internal data called layout data using the DOM object including these CSS characteristics. The layout data and the decoded monomedia data are transferred to the drawing processing unit 400, which generates display data. The compiler 301 compiles script information described in a bml document and generates an executable script object as internal data. The script object is a function (user-defined function) defined in the bml document, and can call the script execution function 302 that is always held by the reception / display device compatible with data broadcasting. Such script execution functions 302 include embedded objects, broadcast extended objects, and broadcast extended functions. A built-in object is an object for handling numerical values, character strings, and the like. The broadcast extended object is an object for handling the table data, and the transmitted table data can be extracted and searched. The broadcast extension function is a function added to realize a broadcast-specific function, and thus a broadcast-specific function such as an electronic program guide (EPG), a timer function, a bidirectional (communication) function, and a permanent storage function. It is possible to handle. The operation control means 100 performs storage of data broadcast data in a memory, reception of a transmission system message signal by an event message method, remote control key control, focus movement of a data broadcast screen, document transition, and the like. The interrupt processing means 700 is for processing an interrupt derived with focus movement, transmission system message signal reception, or the like based on the DOM object.

  Next, a process for presenting a bml document will be described with reference to FIG. FIG. 21 is a flowchart showing a processing procedure when presenting a bml document.

  In order to present a specific bml document, as shown in FIG. 21, a module including the bml document is stored in a specific area (content memory) of the data processing means 4 (step S101), and the internal data is stored. It is created (step S102). Here, the internal data includes a DOM object generated by the parser 201, a script object generated by the compiler 301, layout data generated by the composition processing unit 203, and monomedia data generated by the monomedia processing unit 204. Then, an initial element to be focused is specified based on the generated DOM object (step S103), and a focus interrupt is generated (step S104).

  Next, global code is executed based on the generated script object (step S105), and if an interrupt occurs, the interrupt is input to the interrupt processing means 700. Based on the DOM object, the interrupt processing unit 700 specifies a user-defined function to be executed by the input interrupt, and if there is a user-defined function, executes it (step S106).

  Next, screen presentation is performed based on the generated layout data (step S107). Then, an interrupt (load interrupt) at the time of presentation occurs (step S108), a related user-defined function is specified based on the DOM object, and if there is this user-defined function, this is executed (step S109). After this, a standby state for interruption due to key input of the remote controller or the like is entered.

  Next, interrupt processing after waiting for an interrupt will be described with reference to FIG. FIG. 22 is a flowchart showing the procedure of interrupt processing after waiting for an interrupt.

  Interrupts handled by the interrupt processing means 700 include an intrinsic interrupt that occurs when a remote controller key is pressed or when the focus is applied, a transmission message from a broadcasting station, a monomedia decoder / caption processing means in a data broadcast receiving device, etc. There are two types of broadcast extended interrupts. When these interrupts occur, they are put into an area (interrupt event queue) managed by the interrupt processing means 700. As shown in FIG. 22, the interrupt processing means 700 constantly monitors this interrupt event queue (step S701). Here, if no interrupt is input, the monitoring is continued. On the other hand, if an interrupt is input to the interrupt event queue (Yes in step S701), the interrupt processing unit 700 accesses the DOM object via the DOM-API 202 and specifies the type of interrupt event (step S701). S702). Then, it is determined whether or not the interrupt is a broadcast extended interrupt (step S703). If the interrupt is an intrinsic interrupt (No in step S703), the element to which the intrinsic interrupt belongs via the DOM-API 202 is determined. If the user-defined function to be specified is specified, if there is a script object, the corresponding function is executed (step S705). If the interrupt is a broadcast extended interrupt (Yes in step S703), the interrupt processing unit 700 accesses the DOM object via the DOM-API 202, and the broadcast extended interrupt specified as an element that handles the broadcast extended interrupt is received. If it exists, it is further checked whether or not the generation of the broadcast extended interrupt is permitted (step S704). If the specified broadcast extended interrupt does not exist or does not exist in the DOM object (No in step S704), the broadcast interrupt is invalidated and the monitoring of the interrupt event queue is continued. If the specified broadcast extended interrupt exists in the DOM object and is allowed to be generated (Yes in step S704), the user-defined function specified by the broadcast extended interrupt is specified via the DOM-API 202, If there is, the corresponding function of the script object is executed (step S705). Thereafter, the monitoring of the interrupt event queue is continued again.

  Next, processing for channel selection and document transition will be described with reference to FIG. FIG. 23 is a flowchart showing a procedure of processing at the time of channel selection and document transition.

  When channel selection or document transition occurs, it is determined whether there is a bml document to be presented next (step S110). If there is a bml document to be presented next, a module including this bml document is determined. The content is stored in the content memory (step S111), and the process proceeds to step S112. On the other hand, if there is no bml document to be presented next (No in step S110), the process proceeds to step S112 by skipping step S111.

  Next, all interrupts existing in the interrupt event queue are discarded (step S112), an interrupt at the end of document presentation (unload interrupt) is generated, this interrupt is processed (step S113), and the internal data is discarded. (Step S114). Then, it is determined whether or not there is a bml document to be presented next (step S115). If there is a bml document to be presented next, a presentation process for the bml document is started (step S102). . On the other hand. If there is no bml document to be presented next (No in step S115), the data processing means 4 ends.

One of the services provided by such data broadcasting is a printing service. As a printing method in practical use, there is a method using a data broadcast receiving board of a personal computer and a dedicated application. A method for distributing print information to a dedicated terminal has been proposed (see, for example, Patent Document 1). A method of calling a print function with a script of a bml document has been proposed (see, for example, Patent Document 2). Further, a method has been proposed in which an interrupt generated by a printing apparatus connected to a data broadcast receiving apparatus is handled by a bml document (see, for example, Patent Document 2).
JP-A-11-313191 JP 2002-158979 A

  However, in the above-described prior art, since the call of the print function in the script of the bml document is based on the remote control operation, the print function cannot be called unless the viewer performs a predetermined remote control operation, and the broadcast station is forced to It is not possible to realize a service such as printing automatically. Further, the print target data needs to be distributed at the same time as the program, and it is impossible to realize a print service in which the print target data is changed or newly generated depending on the progress of the program such as sports.

  An object of the present invention is to provide a digital broadcast receiving apparatus, a digital broadcast receiving method, a program, and a storage medium capable of realizing a print service at a timing intended by a broadcasting station.

  To achieve the above object, the present invention provides a parser that interprets a structured document that is data broadcasting content and generates a document structure holding object, and a script that can interpret and execute a procedure description part included in the structured document. The compiler that generates the object, the drawing processing means that displays the screen, the script execution function that the script object calls, the document structure interface that acquires or changes the information of the document structure holding object, and the currently displayed screen An operation control unit for controlling, an interrupt processing unit for processing an interrupt generated by each of the operation control unit, the script execution function, and the document structure interface, and a print processing unit for generating print data in accordance with an instruction from the interrupt processing unit And the operation control means transmits the broadcast station. A function of receiving a message, and when the received message is a message related to printing, a print request interrupt is generated, and the print request interrupt is input to a specific area managed by the interrupt processing unit. .

  To achieve the above object, the present invention provides a parser that interprets a structured document that is data broadcasting content and generates a document structure holding object, and a script that can interpret and execute a procedure description part included in the structured document. The compiler that generates the object, the drawing processing means that displays the screen, the script execution function that the script object calls, the document structure interface that acquires or changes the information of the document structure holding object, and the currently displayed screen An operation control unit for controlling, an interrupt processing unit for processing an interrupt generated by each of the operation control unit, the script execution function, and the document structure interface, and a print processing unit for generating print data in accordance with an instruction from the interrupt processing unit A digital broadcast receiving method comprising: When the message transmitted by the broadcasting station is received by the operation control means, and the received message is a message related to printing, a print request interrupt is generated, and this print request interrupt is sent to a specific area managed by the interrupt processing means. It is characterized by charging.

  To achieve the above object, the present invention provides a parser that interprets a structured document that is data broadcasting content and generates a document structure holding object, and a script that can interpret and execute a procedure description part included in the structured document. A compiler that generates objects, a drawing processing module that performs screen display, a script execution function that is called by a script object, a document structure interface that acquires or changes information on a document structure holding object, and a screen that is currently displayed An operation control module for controlling, an interrupt processing module for processing an interrupt generated by each of the operation control module, the script execution function and the document structure interface, and a print processing module for generating print data in accordance with an instruction from the interrupt processing module And with The operation control module has a function of receiving a message transmitted by a broadcasting station. When the received message is a message related to printing, a print request interrupt is generated, and the print request interrupt is managed by the interrupt processing module. It is characterized by being put into a specific area.

  In order to achieve the above object, the present invention provides a storage medium in which the program according to claim 12 is stored so as to be readable by a computer.

  According to the present invention, it is possible to realize a printing service at a timing intended by a broadcasting station.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram showing a configuration of data processing means in the digital broadcast receiving apparatus according to the first embodiment of the present invention.

  The digital broadcast receiving apparatus according to the present embodiment is basically the same as the configuration shown in FIG. Further, in the data processing means in the present embodiment shown in FIG. 1, a parser 201 that performs document processing, a DOM-API 202, a composition processing means 203, a monomedia processing means 204, a compiler 301 that performs script processing, a script execution function 302, Since the description of the drawing processing unit 400 is as described in the conventional example (FIG. 20), it is omitted. Regarding the different points, the operation control unit 100 is as described in the conventional example, but a message (print event descriptor) that prompts printing is added to the transmission system message signal handled by the message processing unit 101 according to the event message system. Yes. Further, the interrupt processing unit 500 accesses a DOM object via the DOM-API 202 and executes a related user-defined function for an interrupt input to a specific area (interrupt event queue). Interrupts handled by the interrupt processing means 500 are Intrinsic interrupts and broadcast extended interrupts described in the conventional example, and interrupts (print request interrupts) derived by reception of print event descriptors are also set as broadcast extended interrupts. When the interrupt processing unit 500 fetches the print request interrupt from the interrupt event queue, the interrupt processing unit 500 requests the print processing unit 600 to perform the print processing before executing the related user-defined function.

  FIG. 2 shows a list of attributes necessary for print request interruption. The attribute of the print event descriptor is associated with the attribute of the interface (interrupt I / F) that handles the interrupt of the DOM-API 202. The bml document being displayed is associated with the interrupt I / F via an element that handles interrupt.

  Next, processing after reception of the print event descriptor will be described with reference to FIG. FIG. 3 is a flowchart showing a processing procedure after reception of the print event descriptor by the data processing means of FIG.

  The print event descriptor has, as attributes, a value for distinguishing from other transmission system message signals, a value for specifying a program to which the print event descriptor belongs, and a value for specifying a print target. The value indicating a print request interrupt is effective when there are multiple interrupts handled by the print event descriptor. As shown in FIG. 3, when the message processing unit 101 receives a print event descriptor, the message processing unit 101 specifies a program to which the descriptor belongs, and determines whether or not the program is a displayed program (step S121). . Here, when the program to which the print event descriptor belongs and the program being displayed do not match, this processing is terminated.

  On the other hand, when the program to which the print event descriptor belongs and the program being displayed match (Yes in step S121), the message processing unit 101 performs mapping with the interrupt I / F (step S122). The interrupt I / F is an interface that handles an attribute of an interrupt to be input to the interrupt event queue, and has an attribute for designating print target data as an effective attribute in a print request interrupt. If the interrupt I / F is an interface that handles all broadcast extended interrupts, the attribute that specifies the interrupt name is also required. The mapping between the print event descriptor and the interrupt I / F is performed by designating the attribute value of the print event descriptor as the corresponding attribute value of the interrupt I / F. A print request interrupt is generated based on the mapped interrupt I / F (step S123), and is placed in the interrupt event queue.

  Next, interrupt processing including a print request interrupt will be described with reference to FIG. FIG. 4 is a flowchart showing a procedure of interrupt processing including a print request interrupt according to the first embodiment of the present invention.

  There are two types of interrupts handled by the interrupt processing means 500: Intrinsic interrupts and broadcast extended interrupts. When these interrupts occur, the interrupts are put into the interrupt event queue. As shown in FIG. 4, the interrupt processing unit 500 constantly monitors the interrupt event queue (step S501). If no interrupt is input, the interrupt processing unit 500 continues monitoring. When an interrupt is input to the interrupt event queue (Yes in step S501), the interrupt processing unit 500 accesses the DOM object via the DOM-API 202 to identify the type of interrupt event (step S502). Is an extended interrupt for broadcasting (step S503). Here, when the interrupt is an intrinsic interrupt, the interrupt processing unit 500 identifies the user-defined function specified by the element to which the intrinsic interrupt belongs via the DOM-API 202, and if there is, executes the corresponding function of the script object. (Step S505).

  On the other hand, when the interrupt is a broadcast extended interrupt (Yes in step S503), the interrupt processing unit 500 determines whether the interrupt is a print request interrupt (step S506). If the interrupt is not a print request interrupt, the interrupt processing unit 500 accesses the DOM object via the DOM-API 202 and matches the broadcast extended interrupt name among the elements that handle the broadcast extended interrupt. Check if there is an element with the attribute value, and if it exists, check whether the attribute that allows interruption of this element specifies "Allow". If it is "Allow", check the other elements of this element. It is checked whether the valid attribute value matches the interrupt (step S504). If the specified broadcast extended interrupt does not exist in the DOM object, it exists but is not allowed to occur or the value of the valid attribute does not match, this broadcast interrupt is disabled and the interrupt event queue is monitored. I can continue.

  On the other hand, when the specified broadcast extended interrupt exists in the DOM object, the generation is permitted and the valid attribute values match (Yes in step S504), the interrupt processing unit 500 displays the DOM-API 202. The user-defined function specified by the broadcast extended interrupt is specified via the, and if it exists, the corresponding function of the script object is executed (step S505).

  If the interrupt is an extended interrupt for broadcasting (Yes in step S503) and a print request interrupt (Yes in step S506), the interrupt processing unit 500 accesses the DOM object via the DOM-API 202, and broadcasts. Check if there is an element with an attribute value that matches this print request interrupt among the elements that handle extended interrupts. If there is, check whether the attribute that enables interrupt generation for this element specifies "Allow" If it is “permitted”, it is checked whether the value of the other valid attribute of this element matches the interrupt (step S507). Here, if the print request interrupt does not exist in the DOM object, exists but is not permitted to occur, or the value of the valid attribute does not match, the print request interrupt is invalidated and the interrupt event queue is continuously monitored. It is done.

  On the other hand, when a print request interrupt exists in the DOM object, the generation is permitted, and the valid attribute values match (Yes in step S507), the interrupt processing unit 500 specifies the interrupt request via the DOM-API 202. Printing processing is performed on the print target data (step S508). The print target is specified using an attribute that designates the print target among the attributes of the print I / F corresponding to the print request interrupt. Next, the interrupt processing unit 500 specifies a user-defined function designated by the print request interrupt via the DOM-API 202, and if there is, executes the corresponding function in the script object (step S505).

  Next, the printing process in step S508 will be described with reference to FIG. FIG. 5 is a flowchart showing the procedure of the printing process in step S508 of FIG.

  As shown in FIG. 5, the print processing unit 600 determines whether the print target data specified by the interrupt processing unit 500 is stored in a specific area (print data memory or the like) (step S601). If the specified print target data is not stored, the print processing unit 600 acquires data (step S602) and advances the process to step S603. On the other hand, if the specified print target data is stored in the print data memory, step S602 is skipped and the process proceeds to step S603.

  Next, the acquired data or the print target data stored in the print data memory is converted into a data format interpretable by the printing apparatus (step S603) and transferred to the printing apparatus (step S604).

  In addition, the print processing unit 600 prompts the interrupt processing unit 500 to specify and execute a user-defined function immediately before or after data transfer to the printing apparatus is started.

  Next, FIG. 6 shows an example of a print service compatible bml document using a print event descriptor. From the value of the type attribute that specifies the interrupt name of the prn_item element that handles interrupts, it can be seen that this bml document supports print request interrupts. Further, it can be seen from the value of the subscribe attribute that designates permission of the print request interrupt, that the print request interrupt is permitted. When a print event descriptor is received while this bml document is being displayed, if the attribute specifying the program of this descriptor matches the program specified by the event_ref attribute of the prn_item element, the print request interrupt generated at this time is It becomes effective. Therefore, the print target data specified by the print event descriptor is acquired, converted, and transferred to the printing device. At the same time, the user-defined function print () specified by the onoccure attribute of the prn_item element is executed. The In the user-defined function print (), the text content displayed on the screen is changed. If the print event descriptor is transmitted only once during the broadcast of the program, the viewer can print the print target data only once.

  The user-defined function “print ()” is a function that is executed during printing or after printing. Therefore, the user-defined function “print ()” can be said to be a convenient function for performing post-printing processing such as printing history update and charging for paid printing. However, since this function is executed in response to a print request interrupt, the function may not be executed reliably if a channel selection or transition occurs before the print request interrupt is taken out after the interrupt event queue is entered or during print processing. .

  Processing for discarding interrupts during channel selection / transition will be described with reference to FIG. FIG. 7 is a flowchart showing a procedure of interrupt discarding processing at the time of channel selection / transition according to the first embodiment of the present invention.

  Since the processing at the time of channel selection / transition is as described in the conventional example, the description is omitted. Interrupt discarding (step S112 in FIG. 23) is performed when an interrupt exists in the interrupt event queue as shown in FIG. 7 (Yes in step S511). Next, the interrupt is specified through the DOM-API 202 (step S512), and it is checked whether or not there is a print request interrupt (step S513). If the interrupt is not a print request interrupt, this interrupt is discarded (step S517).

  On the other hand, if the interrupt is a print request interrupt (Yes in step S513), the validity of the print request interrupt is checked through the DOM-API 202 (step S514). If the interrupt is invalid, the interrupt is discarded. (Step S517). If the print request interrupt is valid (Yes in S514), the printing process is performed (Step S515), and the associated user-defined function is executed (Step S516).

  When there is no interrupt in the interrupt event queue, an unload interrupt related to the display document is generated (step S113 in FIG. 23).

  As described above, according to the present embodiment, it is possible to realize a print service at a timing intended by a broadcasting station by generating a print request interrupt accompanying reception of a print event descriptor. Further, even when a channel selection or transition occurs after a print request interruption occurs and before printing is completed, printing or a user-defined function associated with printing is executed.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to the drawings.

  In the first embodiment, the print request interrupt generated by the reception of the print event descriptor has been described. In the present embodiment, execution of the print request function included in the script execution function 302 and printing provided in the remote controller are performed. A print request interrupt can be generated by pressing a button.

  FIG. 8 shows an example of a print service compatible bml document using a print request function. Assume that the user-defined function pre_print () associated with the p element is executed by the viewer's remote control operation. When the pre_print () function confirms that the viewer is not printing from the value stored in the fixed area (permanent storage area) of the data processing means 4, the print request function among the functions of the script execution function 302 Execute requestPrint (). At this time, a value for specifying print target data is designated as an argument of the function.

  Next, processing of the print request function will be described with reference to FIG. FIG. 9 is a flowchart showing the processing procedure of the print request function in the second embodiment of the present invention.

  When the print request function requestPrint () is called, as shown in FIG. 9, a value for specifying the program to which the bml document being displayed belongs is acquired (step S301). Then, the acquired value and the value for specifying the print target data specified by the argument of the function are mapped as the value of the attribute corresponding to the interrupt I / F (step S302). Next, a print request interrupt is generated based on the mapped interrupt I / F (step S303), and is placed in the interrupt event queue. Note that a value for specifying a program can be omitted.

  In the bml document shown in FIG. 8, it can be seen from the value of the type attribute that specifies the interrupt name of the prn_item element that handles the interrupt, that the bml document corresponds to the print request interrupt. Further, it can be seen from the value of the subscribe attribute that designates permission of the print request interrupt, that the print request interrupt is permitted. When a print request interrupt is generated by executing the user-defined function pre_print (), this print request interrupt is valid if the program specified by the interrupt matches the program specified by the event_ref attribute of the prn_item element. Therefore, the print target data specified by the argument of the print request function is acquired, converted, and transferred to the printing device. At the same time, the user-defined function post_print () specified by the onoccure attribute of the prn_item element is executed. Is done. In the user-defined function post_print (), the value stored in the permanent storage area is changed to “printed”. post_print () is always executed even if there is a channel selection or transition after a print request interrupt occurs. That is, the viewer can print the print target data only once.

  FIG. 10 shows an example of a print service compatible bml document using the print button of the remote control. In a load interrupt that occurs when this bml document is presented, the user-defined function pre_print () is executed. When pre_print () confirms that the viewer is printing from the value stored in the permanent storage area, the print button is invalidated. If the viewer is not printing, the print button is enabled as specified in the used-key-list property of the body element.

  Next, processing after the print button is pressed will be described with reference to FIG. FIG. 11 is a flowchart showing a processing procedure after the print button is pressed according to the second embodiment of the present invention.

  When this button is pressed while a bml document for which the print button is valid is displayed, a value for specifying the program to which the bml document belongs is acquired as shown in FIG. 11 (step S131). The print target data is data specified based on some restriction such as data having a fixed name or data stored in a fixed area, and the character string is acquired (step S132). The acquired value is mapped as the value of the corresponding attribute of the interrupt I / F (step S133). Then, a print request interrupt is generated based on the mapped interrupt I / F (step S134) and is put into the interrupt event queue. Note that a value for specifying a program can be omitted.

  In the bml document shown in FIG. 10, it can be seen from the value of the type attribute that specifies the interrupt name of the prn_item element that handles the interrupt, that the bml document corresponds to the print request interrupt. Further, it can be seen from the value of the subscribe attribute that designates permission of the print request interrupt, that the print request interrupt is permitted. When a print request interrupt is generated by pressing the print button, if the program specified by the interrupt matches the program specified by the event_ref attribute of the prn_item element, the print request interrupt becomes valid. Therefore, the print target data specified by the print request interrupt is acquired, converted, and transferred to the printing device. At the same time, the user-defined function post_print () specified by the onoccure attribute of the prn_item element is executed. . In the user-defined function post_print (), the value stored in the permanent storage area is changed to “printed” and the print button is disabled. post_print () is always executed even if there is a channel selection or transition after a print request interrupt occurs. That is, the viewer can print the print target data only once.

  According to this embodiment, by generating a print request interrupt associated with execution of a print request function and pressing of a print button, a print service can be realized at a timing depending on the viewer, and a print request interrupt is generated. Even when channel selection or transition occurs later and before printing is completed, user-defined functions associated with printing and printing are executed.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to the drawings.

  In the present embodiment, an automatic print service for a program being viewed will be described. Automatic printing is one in which all program-related printing services can be executed while an arbitrary screen of a program is being displayed.

  For example, it is assumed that the program being viewed has a configuration as shown in FIG. In program A, there are five data broadcast display screens from bml document 1 to bml document 5. Then, regardless of which bml document is being displayed, it is assumed that printing is performed by a print request interrupt accompanying reception of a print event descriptor belonging to program A. In order to perform printing, it is necessary that the bml document being displayed has an element (for example, the prn_item element in FIG. 6) that permits a print request interruption. If there is a user-defined function associated with this element, this function will also be executed. Thus, if all bml documents belonging to program A have this element and an associated user-defined function, automatic printing will occur. However, when there are a plurality of user-defined functions, there are many overlapping portions between bml documents. Therefore, an automatic print service when only one bml document in program A is compatible with all print services will be described.

  Processing of the automatic print setting function will be described with reference to FIG. FIG. 13 is a flowchart showing the processing procedure of the automatic print setting function in the third embodiment of the present invention.

  The automatic print setting function is one function of the script execution function 302, and can be assumed to prompt the viewer to perform automatic printing when the initial bml document is displayed. When the automatic print setting function setAutoPrint () is called, as shown in FIG. 13, it is checked whether automatic printing has already been set (step S304). If automatic printing has already been set, this processing ends. .

  On the other hand, if automatic printing is not set (No in step S304), bml documents corresponding to all print services are specified (step S305), a DOM object is generated (step SS306), and this is printed. It is set as DOM (step S307). Then, this process ends.

  As the bml document for all print services, an initial bml document, a bml document having a specific name, a bml document specified by a function argument, and the like are assumed.

  Next, processing of the automatic print setting cancellation function will be described with reference to FIG. FIG. 14 is a flowchart showing the processing procedure of the automatic print setting cancellation function in the third embodiment of the present invention. This function is one function of the script execution function 302. When the automatic print setting cancel function resetAutoPrint () is called, as shown in FIG. 14, it is checked whether or not automatic printing has already been set (step S308), and if not set, this processing ends.

  On the other hand, if automatic printing is set (Yes in step S308), the print DOM is discarded (step S309).

  Next, interrupt processing for automatic printing will be described with reference to FIG. FIG. 15 is a flowchart showing the procedure of an interrupt process corresponding to automatic printing in the third embodiment of the present invention.

  There are two types of interrupts handled by the interrupt processing means 500: Intrinsic interrupts and broadcast extended interrupts. The processing of the broadcast extended interrupt other than the Intrinsic interrupt and the print request interrupt is the same as in the first embodiment, and is omitted here.

  As shown in FIG. 15, if the interrupt is a broadcast extended interrupt (Yes in step S503) and a print request interrupt (Yes in step S506), the interrupt processing unit 500 checks whether automatic printing is set. (Step S509). If automatic printing is set, the DOM object to be used is changed to printing DOM (step S510).

  Next, the interrupt processing unit 500 accesses the DOM object or the print DOM via the DOM-API 202, and determines whether there is an element having an attribute value that matches the print request interrupt among the elements that handle the extended interrupt for broadcasting. Check to see if the attribute that allows interrupt generation for this element specifies "Allow" if it exists, and if it is "Allow", whether the interrupt matches the value of another valid attribute for this element (Step S507). If the print request interrupt does not exist in the DOM object or the print DOM, exists but is not allowed to occur, or the value of a valid attribute does not match, the print request interrupt is disabled and the interrupt event queue continues to be monitored. .

  On the other hand, when the print request interrupt exists in the DOM object or the print DOM, the generation is permitted, and the valid attribute values match (Yes in step S507), the interrupt processing unit 500 transmits the interrupt via the DOM-API 202. The printing process is performed on the print target data specified in step S508. The print target is specified using an attribute for designating the print target among the attributes having the interrupt I / F corresponding to the print request interrupt. Then, the interrupt processing unit 500 specifies the user-defined function designated by the print request interrupt via the DOM-API 202, and if there is, executes the corresponding function in the script object (step S505 ').

  As described above, according to the present embodiment, the automatic print setting function and the automatic print setting cancel function are added to the script execution function 302 to perform the print request interruption process using the bml document corresponding to all print services. It is possible to perform an automatic print service during display of an arbitrary bml document including two print service-compatible bml documents.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to the drawings.

  In each of the above embodiments, the print target data exists in one module that is transmitted by the data carousel method. However, in the present embodiment, the print target data is transmitted across two or more modules. A description will be given of the case.

  As such data to be printed, a pamphlet or the like is assumed because of the large amount of data. FIG. 16 shows the configuration of program B in which a printing brochure is divided into three modules. The brochure list in Module 1 contains information for identifying the components and modules that contain printed brochures, values that specify the order of combining the divided printed brochures, and divided printing It has at least a value for detecting the completion of acquisition of the pamphlet. As other information, a pamphlet name, a data retention time limit, the number of printable times, and the like are assumed.

  Next, processing of the divided print target data acquisition start function will be described with reference to FIG. FIG. 17 is a flowchart showing the processing procedure of the divided print target data acquisition start function according to the fourth embodiment of the present invention.

  The divided print target data acquisition start function is one function of the script execution function 302, and can be assumed to prompt the viewer to print a pamphlet when displaying an initial bml document. When the divided print target data acquisition start function collectPrintData () is called, as shown in FIG. 17, the division information (corresponding to the pamphlet list in FIG. 16) specified by the argument is acquired (step S311) and divided. The acquisition order of the print target data is calculated (step S312). The data acquisition order in the example of FIG. 16 is “module 3 → module 4 → module 5”. Next, acquisition completion information for each divided print target data is calculated (step S313). As the acquisition completion information, a data size, an end mark, or the like is assumed. The calculated data acquisition order and acquisition completion information are notified to the operation control means 100 (step S314), and acquisition of print data is started.

  Next, the processing after the start of acquisition of the divided print target data will be described with reference to FIG. FIG. 18 is a flowchart showing a processing procedure after the start of acquisition of divided print target data according to the fourth embodiment of the present invention.

  When collectPrintData () is executed, a new writable data file is created in the print data memory as shown in FIG. 18 (step S141), and the first division is performed based on the designated data acquisition order. Data acquisition is started (step S142). In the example of FIG. 16, the data of module 3 is acquired.

  Next, it is determined whether or not the acquisition of the divided data is completed (step S143). If the acquisition of the divided data is not completed, the data writing is continued (step S414).

  On the other hand, when the acquisition of the divided data is completed using the specified acquisition completion information (Yes in step S143), it is determined whether acquisition of all the divided data is completed. Here, if the divided data to be acquired remains, acquisition of the divided data is continued (step S142). If there is no remaining divided data to be acquired (Yes in step S145), the writing of the data file written in the print data memory is terminated (step S146).

  Next, the value for designating the data file written in the print data memory and the value for specifying the program are mapped as the value of the corresponding attribute of the interrupt I / F (step S147), and the mapped interrupt is recorded. A print request interrupt is generated based on the I / F (step S138). Then, a print request interrupt is input to the interrupt event queue.

  Since the processing after the print request interrupt is generated is the same as that in the first embodiment, the description is omitted. Even in the case of a print request interruption upon completion of acquisition of all the divided data, any data broadcast screen in the same program is divided by using the print DOM as described in the third embodiment. Needless to say, the printed data to be printed can be printed.

  Here, the division information is used as the argument of the function, but it is also possible to use a value for specifying the first data of the divided data as the argument. For example, a method of determining that the next divided data exists from a value indicating that the data is not the final data and the own data size and specifying the next divided data from the data name is conceivable.

  As described above, according to the present embodiment, by adding the divided print target data acquisition start function to the script execution function 302 and performing the print request interruption process upon completion of acquisition of all the divided data, a plurality of print target data acquisition start functions are obtained. Even for print target data that spans modules, the print service can be executed. In addition, since the printing process is started after a print request interruption occurs, the data broadcast can be viewed even during acquisition of print target data.

  The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. The program code of the software that realizes the functions of the above-described embodiments is downloaded and executed via a network or the like, and a recording medium on which the program code is recorded is supplied to the system or apparatus, and the computer of the system or apparatus Needless to say, this can also be achieved by (or CPU or MPU) reading and executing the program code stored in the recording medium.

  In this case, the program code itself read from the recording medium realizes the functions of the above-described embodiment, and the recording medium on which the program code is recorded constitutes the present invention. As a recording medium for supplying the program code, for example, a floppy (registered trademark) disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like is used. be able to.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS running on the computer performs actual processing based on an instruction of the program code. It goes without saying that a case where the functions of the above-described embodiment are realized by performing part or all of the processing, is also included.

  Furthermore, after the program code read from the recording medium is written in a memory provided in a function expansion board inserted in the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows the structure of the data processing means in the digital broadcast receiver which concerns on the 1st Embodiment of this invention. FIG. 6 is a diagram showing a list of attributes necessary for a print request interrupt. 3 is a flowchart showing a procedure of processing after reception of a print event descriptor by the data processing means of FIG. 1. 4 is a flowchart illustrating a procedure of interrupt processing including a print request interrupt according to the first embodiment of the present invention. FIG. 5 is a flowchart illustrating a procedure of a printing process in step S508 of FIG. It is a figure which shows the example of a print service corresponding | compatible bml document using a print event descriptor. It is a flowchart which shows the procedure of the process of interruption discard at the time of channel selection / transition in the 1st Embodiment of this invention. An example of a print service compatible bml document using a print request function is shown. It is a flowchart which shows the procedure of the process of the print request function in the 2nd Embodiment of this invention. It is a figure which shows the example of the bml document corresponding to a printing service using the print button of remote control. It is a flowchart which shows the procedure of the process after the press of the print button in the 2nd Embodiment of this invention. It is a figure which shows an example of a structure of the program in view. It is a flowchart which shows the procedure of the process of the automatic print setting function in the 3rd Embodiment of this invention. It is a flowchart which shows the procedure of the process of the automatic printing setting cancellation | release function in the 3rd Embodiment of this invention. It is a flowchart which shows the procedure of the interruption process corresponding to automatic printing in the 3rd Embodiment of this invention. It is a figure which shows an example of a structure of the program B in which the brochure for printing is divided | segmented into three modules. It is a flowchart which shows the procedure of the process of the divided printing object data acquisition start function in the 4th Embodiment of this invention. It is a flowchart which shows the procedure of the process after the acquisition start of the divided | segmented printing object data in the 4th Embodiment of this invention. It is a block diagram of the conventional data broadcast receiver. It is a block diagram which shows the structure of the data processing means 4 of FIG. It is a flowchart which shows the procedure of the process at the time of presenting a bml document. It is a flowchart which shows the procedure of the interruption process after interruption waiting. It is a flowchart which shows the procedure of the process in the case of channel selection or document transition.

Explanation of symbols

100 operation control means 101 message processing means 200 document processing means 201 parser 202 DOM-API
203 Composition processing means 204 Monomedia processing means 300 Script processing means 301 Compiler 302 Script execution function 400 Drawing processing means 500 Interrupt processing means 600 Print processing means

Claims (13)

A parser that interprets a structured document that is data broadcasting content and generates a document structure holding object;
A compiler that generates an executable script object by interpreting the procedure description part contained in the structured document;
Drawing processing means for performing screen display;
Script execution function called by script object,
A document structure interface for obtaining or changing information of a document structure holding object;
An operation control means for dynamically controlling the displayed screen;
Interrupt processing means for processing interrupts generated by the operation control means, the script execution function, and the document structure interface;
Print processing means for generating print data in response to an instruction from the interrupt processing means,
The operation control means has a function of receiving a message transmitted by a broadcasting station, and when the received message is a message related to printing, generates a print request interrupt, and the interrupt processing means manages the print request interrupt. A digital broadcast receiver characterized in that it is put into a specific area.   The message received by the operation control means is transmitted by the broadcast station using an event message method, and at least a value for distinguishing from other messages, a value for identifying a program, and data for printing are identified. The digital broadcast receiving apparatus according to claim 1, wherein the digital broadcast receiving apparatus has a value.   The interrupt processing means has a function of specifying and executing a function associated with the fetched interrupt from among the functions in the procedure description part in the currently displayed structured document, and the interrupt to be handled is a print request interrupt. The print processing unit is requested to acquire data to be printed, convert it to a data format that can be processed by the printing apparatus, and transfer the converted data to the printing apparatus. 2. The digital broadcast receiving apparatus according to claim 1, wherein the function associated with the print interrupt is executed immediately before or after the transfer.   2. The interrupt processing unit processes the print request interrupt without discarding when interrupting the interrupt input to the specific area to be managed is discarded due to channel selection and document transition. The digital broadcast receiver as described.   The print request interrupt generated by the operation control means has at least a value for specifying data to be printed, and the value of the print request interrupt can be acquired using a document structure interface. The digital broadcast receiver according to claim 1.   When the interrupt processing unit extracts the print request interrupt, the interrupt processing unit checks whether there is an element that handles the print request among the elements of the structured document that is currently displayed. If there is, the element has the element. The value of the attribute permitting the print request interrupt is checked, and if it is permitted, the print processing unit requests the print processing unit to acquire the data to be printed designated by the print request interrupt, convert the data, and transfer the data. 2. The digital broadcast receiving apparatus according to claim 1, wherein an attribute designating a procedure description function name of the element is checked immediately before or after data transfer is started, and the designated function is executed.   The script execution function includes a print request function having at least a value for specifying print target data as an argument. When the print request function is called, the print request function generates a print request interrupt, 2. The digital broadcast receiving apparatus according to claim 1, wherein the print request interrupt is input to a specific area managed by the interrupt processing means.   The operation control means has a function of performing processing according to a remote control button operated by a viewer. When the remote control button for prompting printing is pressed, a print request interrupt is generated, and the print request interrupt is generated. 2. The digital broadcast receiving apparatus according to claim 1, wherein the digital broadcast receiving apparatus is placed in a specific area managed by the interrupt processing means.   The script execution function includes an automatic print setting function for enabling reception of all messages related to printing belonging to the currently displayed program, and an automatic print setting cancellation function for canceling this when automatic printing is set, The interrupt processing means performs processing of a print request interrupt using a document structure holding object generated based on a structured document having a procedure description related to a print request interrupt for the entire program when automatic printing is set. The digital broadcast receiver according to claim 1.   The script execution function includes a divided print target data acquisition start function that uses at least a value for specifying data holding print target data information as an argument, and the divided print target data acquisition start function is called. The divided print target data acquisition start function requests the operation control unit to acquire the print target data divided using the print target data information, and the operation control unit performs the division based on the print target data information. When all the print target data is acquired and one print target data is generated, a print request interrupt is generated, and the print request interrupt is input to a specific area managed by the interrupt processing means. The digital broadcast receiver according to claim 1. A parser that interprets a structured document that is data broadcasting content and generates a document structure holding object, a compiler that generates an executable script object by interpreting the procedure description part included in the structured document, and displays the screen Drawing processing means, script execution function called by a script object, document structure interface for acquiring or changing information of a document structure holding object, operation control means for dynamically controlling a screen being displayed, and the operation control means A digital broadcast receiving method comprising: an interrupt processing unit that processes an interrupt generated by each of the script execution function and the document structure interface; and a print processing unit that generates print data according to an instruction from the interrupt processing unit,
When the operation control means receives a message transmitted by the broadcast station, and the received message is a message related to printing, a print request interrupt is generated, and the print request interrupt is managed by the interrupt processing means. A digital broadcast receiving method, wherein A parser that interprets a structured document that is data broadcasting content and generates a document structure holding object;
A compiler that generates an executable script object by interpreting the procedure description part included in the structured document;
A drawing processing module that performs screen display;
Script execution function called by script object,
A document structure interface for obtaining or changing information of a document structure holding object;
An operation control module that dynamically controls the displayed screen;
An interrupt processing module that processes interrupts generated by the operation control module, the script execution function, and the document structure interface;
A print processing module that generates print data in response to an instruction from the interrupt processing module;
The operation control module has a function of receiving a message transmitted by a broadcasting station. When the received message is a message related to printing, a print request interrupt is generated, and the print request interrupt is managed by the interrupt processing module. A program characterized by being placed in a specific area.   A storage medium storing the program according to claim 12 in a computer-readable manner.

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