JP2007336372A - Method of display control in broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of display control in a broadcast receiving terminal by which a focus place can be displayed when returning to a preceding page in page switching of a data broadcast part in a digital broadcast. <P>SOLUTION: When receiving BML data (S1), a digital broadcast receiver reads the received BML data (S2) and reads memory information (S3). The digital broadcast receiver confirms a control flag within the memory information (S4) and when the control flag within the memory information is "1", the digital broadcast receiver confirms whether a corresponding element is present in the received BML or not (S5). When present, the digital broadcast receiver applies visualization process to the element (S6). Continuously, the receiver applies visualization process to other elements (S7). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a technique for optimally displaying page data transmitted together with a main line video in a terrestrial digital broadcast receiving terminal.

  The recently started terrestrial digital broadcasting 1-segment partial reception service (hereinafter referred to as “one-segment broadcasting”) enables program viewing on a mobile phone equipped with a dedicated browser. One-seg broadcasting is to simultaneously display data broadcasting that provides information with text and still images, in addition to program video and audio called main line video.

  Since it is difficult to present all information in such a one-seg broadcast on a limited screen area of a mobile phone, in the case of content that cannot be displayed on a single screen, a desired hyperlink or input form is displayed. Requires a scrolling operation.

  Data broadcasting content in digital broadcasting is page data described in a page description language called BML (Broadcast Markup Language). This language specification and browser operation specifications implemented in the receiver are stipulated by ARIB (Radio Industry Association), and the specifications for digital terrestrial broadcasting are "A profile" for stationary TV and one-segment broadcasting Are divided into “C profiles”. In the “A profile”, an ID name is given to a tag to be focused such as a hyperlink or an input form, and focus control can be performed by an operation of ECMA-SCRIPT incorporated in BML.

  However, in the “C profile”, in consideration of compatibility with the HTML browser installed in the mobile phone and the uniformity of the interface, it is specified that the operation from the script cannot be performed (the operation of focus transition depends on the implementation of the terminal) Become). In other words, focus control from the content side is not possible as in conventional stationary television data broadcasting (A profile), so the one-segment broadcasting terminal cannot return to the focus location of the previous page when switching pages, and again to the focus location. There is a problem that you have to scroll.

  Therefore, the present invention provides a display control method in a broadcast receiving terminal capable of displaying the original focus location when returning to the previous page when switching the page of the data broadcast portion in digital broadcasting. And

  In order to solve the above-described problems, the present invention provides a method for controlling the display of page data in an apparatus that receives digital broadcast, wherein the element ID recorded in a predetermined area in the memory is received at the step of receiving page data. A step of reading, a step of checking whether or not the read element ID is present in the received page data, and if the read element ID is present in the received page data, the element is transferred to other page data. Performing a visualization process prior to an element existing in the page, a visualization process for an unprocessed element present in the page data, and a step of displaying page data including the visualized element on a display screen. It is characterized by that.

  According to the present invention, when a link to another page is clicked while a certain page is displayed, the clicked element is recorded, and when the other page is received and returned to the original page, the recording is performed. Since the displayed element is first visualized, the clicked element can be displayed at a predetermined position on the screen.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.
(Device configuration)
FIG. 1 is a block diagram showing an embodiment of a digital broadcast receiving apparatus used in the present invention. In FIG. 1, 1 is an antenna, 2 is a tuner, 3 is an OFDM demodulator, 4 is a TS decoder, 5 is an audio decoder, 6 is a video decoder, 7 is a monomedia decoder, 8 is a BML browser, 9 is a speaker / earphone, 10 is a display device, 11 is a CPU, 12 is a storage area (ROM / RAM), 13 is a communication interface, 14 is a key interface, 15 is an operation key, and 16 is a communication function.

  A digital broadcast receiving apparatus (hereinafter referred to as “receiving apparatus”) 100 shown in FIG. 1 is a configuration of a commercially available mobile phone terminal compatible with one-segment broadcasting, and this configuration itself is not new at all. In the receiving apparatus 100, when a broadcast wave including main line video, attached audio, and BML is received via the antenna 1 and the tuner 2, the OFDM demodulator 3 performs OFDM demodulation, and then the TS decoder 4 Separate attached audio and BML. The attached sound is decoded by the sound decoder 5 and output from the speaker or the earphone 9. The main line video is decoded by the video decoder 6 and displayed on the display device 10. The BML is interpreted by the BML browser 8 and displayed on the display device 10. Among these, mono media described in BML is acquired from an external data server by the mono media decoder 7 via the communication interface 13 and the communication function 16 and displayed on the display device 10 by processing of the BML browser 8. . In addition, the BML browser can be instructed from the operation keys 15 via the key interface 14. The page data in BML format is composed of a plurality of pages linked to each other, but the broadcast wave includes only the first page P1, and the data server includes all pages including the first page. (For example, when one group is composed of N pages, P1 to PN) are stored.

  Here, FIG. 2 shows a screen state when the receiving apparatus 100 receives the one-segment broadcasting. As shown in FIG. 2, the screen of the display device 10 is provided with a main line video display unit and a data broadcast display unit. The main line video display unit displays a video of the received main line data, and the data broadcast display unit The received page data (in this embodiment, BML data) is displayed.

  The main line data is sequentially displayed by the video decoder 6. On the other hand, when the page data of the data broadcast is received, the BML browser 8 composes the screen data and displays it on the data broadcast display unit of the display device 10, but changes the displayed screen data according to the user's instruction. Will be processed. The present invention is characterized by the processing of page data displayed on the data broadcast display unit.

(Processing operation)
Next, a display control method according to the present invention will be described. As described above, the receiving apparatus 100 also performs display control of main line data, but this is not different from conventional processing, and a description thereof will be omitted. Therefore, hereinafter, a display control process for page data received simultaneously with main line data will be described. In this embodiment, a case where BML data is adopted as page data will be described as an example. Here, the structure of BML data is shown in FIG. As shown in FIG. 8, the BML data is composed of a declaration part, a HEAD part, and a BODY part, and the HEAD part has a TITLE element and a SCRIPT element, and the BODY part has a BODY element and a monomedia element. ing.

  When the BML browser 8 receives BML data as shown in FIG. 8, the BML browser 8 reads the declaration part and the HEAD part in this order, and executes the process described in the global script. The BML data used in the present invention is characterized in that a global script includes a description for writing memory information, and a description for performing visualization processing from the written element when the memory information is written. . The visualization process means a process of setting the visibility attribute of the BML tag element to “true” by the above-described ECMA-SCRIPT operation.

  FIG. 3 is a flowchart showing an outline of the BML data display control processing by the receiving apparatus 100. Here, a case where one group is configured by two pages P1 and P2 will be described as an example. Therefore, the first page P1 is transmitted along with the main line video from the broadcast wave, and P1 and P2 are stored in the data server. First, the BML browser 8 receives BML data (S1), and starts reading BML data (S2). Thereby, the BML browser 8 reads the declaration part in the BML data, the TITLE element of the HEAD part, and the SCRIPT element of the HEAD part. When the global script in the SCRIPT element is read, the BML browser 8 performs display control processing according to the description of the global script. Since the BML data global script used in the present invention describes an instruction to read memory information, the BML browser 8 reads the memory information in the storage area 12 (S3).

  Here, the memory information will be described. The memory information is information recorded in an area that can be referred to by the BML browser 8 in the storage area 12 in the receiving apparatus 100, and includes a control flag and an element ID. Among these, the control flag indicates whether or not the focus location is specified. When the control flag is “1”, it indicates that the focus location is specified, and when the control flag is “0”. Indicates that the focus location is not specified. The control flag is set to “0” in the initial state. The element ID indicates the ID of the element designated as the focus location. This control flag is specified to be initialized to “0” at the time of channel switching according to the ARIB convention.

  After reading the memory information in S3, the BML browser 8 determines whether or not the control flag is “1” (S4). As described above, since the control flag is “0” in the initial state, the BML browser 8 reads each element and performs visualization (S7). As a result, each element is visualized and displayed on the data broadcast display unit. Specifically, the BML browser 8 performs rendering processing based on the visible attribute, performs rendering processing on the display device 10, and displays page data on the screen. When “false” is set in the visibility attribute, the BML browser 8 does not perform the rendering process, and thus the element is not displayed on the screen.

  As described above, in the initial state, all elements of the page data are visualized and displayed on the display device 10. However, when the page data is configured as image data, as shown in FIG. 4, the size of the normal page data is often larger than the screen display area of the data broadcast display unit, and cannot be displayed entirely. Therefore, the BML browser 8 displays the position of the element visualized first among the elements of the page data as the head. Usually, since visualization is performed in the description order of the elements written in the BODY portion, the upper end of the element described at the top is displayed so as to match the upper end of the screen display area.

  For example, consider a case where page data having three elements 1 to 3 is displayed. Element 1 to element 3 have IDs 1 to 3, respectively. In this case, the visualization process is executed from element 1 with ID = 1. Then, the display is performed by aligning the upper left corner of the element on which the visualization processing is first performed with the upper left corner of the screen display area. Therefore, in this case, as shown in FIG. 5, the upper left corner of the element 1 is displayed in alignment with the upper left corner of the screen display area. All the elements included in the page data are visualized, but since the size of the page data is larger than the screen display area, the elements 2 and 3 are not displayed. In such a case, by performing the scroll process, the elements 2 and 3 can be displayed as shown in FIG. In this way, the process of displaying with the element visualized first as a reference and the process of scrolling to display other elements are the same as the functions of the conventional BML browser.

  The feature of the present invention is that the element specified by the user is stored, and when the page data is displayed again, the stored element is first visualized. As shown in FIG. 5B, it is assumed that the user performs a process of clicking the element 3 with the operation key 15 in a state where the elements 2 and 3 are displayed. Then, the BML browser 8 recognizes the ID of the clicked element and executes a script described corresponding to the element. In the case of an element that performs focus control, a script for writing memory information is described. Therefore, when a script for writing memory information in association with element 3 is described, when element 3 is clicked, BML browser 8 writes the ID in a predetermined area of the memory and sets a control flag. Set to “1”. That is, as a result, the memory information is changed from the state shown in FIG. 6A to the state shown in FIG. 6B.

  When the element 3 is clicked, the process set in the element 3 is executed at the same time. For example, if a process for calling another page is set in the element 3, the BML browser 8 executes the process. When a process for calling another page is set in the element 3, the receiving apparatus 100 accesses a data server (usually managed by a broadcasting station) in which page data is stored via the communication function 16, and Requests transmission of a page corresponding to 3. When the requested page is transmitted, the BML browser 8 executes processing according to the flowchart of FIG.

  When the broadcast station side prepares a plurality of pages, each element is set so that its ID does not overlap. Therefore, the page P2 requested by the element 3 does not include an element with ID = 3. When the communication function 16 receives BML data corresponding to the page P2 (S1), the BML browser 8 reads the BML data (S2). Subsequently, the BML browser 8 reads memory information (S3). At this point, the memory information is present in the received BML data because the element having the element ID recorded in the memory information is “1” as shown in FIG. 6B. It is determined whether or not to perform (S5). As a result of the determination, if it exists, the BML browser 8 performs focus control. However, here, since the element ID recorded in the memory information is “3” and the ID of the element included in the BML data of the received page P2 is 4 to 7, the focus control is not performed, and each of the other IDs Elements are read and visualized (S7). As a result, each element is visualized and displayed in the screen display area.

  In the case of page P2, since there are four elements, element 4 to element 7, the visualization process is executed from element 4 with ID = 4. Then, the upper left corner of the element 4 on which the visualization process is first executed is displayed in alignment with the upper left corner of the page display unit. As a result, the page P2 is displayed in a state as shown in FIG.

  Assume that the user clicks the element 7 in the state shown in FIG. Then, the BML browser 8 recognizes the ID of the clicked element and executes a script described corresponding to the element. If the element 7 is not an element that performs focus control, the script for writing the memory information is not described, so the memory information remains unchanged as shown in FIG. 6B.

  Then, the process set in the element 7 is executed. For example, if a process for calling the page P1 is set in the element 7, the BML browser 8 executes the process. When the process for calling another page is set in the element 7, the receiving apparatus 100 accesses the page server and requests transmission of the page P1. When the requested page P1 is transmitted, the BML browser 8 executes processing according to the flowchart of FIG.

  When the receiving device 100 receives BML data corresponding to the page P1 (S1), the BML browser 8 reads the BML data (S2). Subsequently, the BML browser 8 reads memory information (S3). At this point, the memory information is present in the received BML data because the element having the element ID recorded in the memory information is “1” as shown in FIG. 6B. It is determined whether or not to perform (S5). Here, the element ID recorded in the memory information is “3”, and the BML data of the received page P1 has the element 3 with the element ID “3”, so focus control is performed. Specifically, visualization is first executed for the element ID “3” recorded in the memory information (S6). Further, the BML browser 8 reads each element other than the element 3 that has already been visualized, and performs visualization (S7). As a result, each element is visualized and displayed in the screen display area.

  It is the same as the function of the conventional BML browser in that the display is performed by aligning the upper left corner of the element on which the visualization processing is first performed with the upper left corner of the screen display area. Therefore, in this case, as shown in FIG. 7B, the upper left corner of the element 3 is displayed in alignment with the upper left corner of the screen display area.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. For example, in the above embodiment, as shown in FIG. 6, the control flag and the element ID are recorded as the memory information. However, an impossible value may be set as the initial value of the element ID. . In this case, the control flag can be omitted.

It is a block diagram which shows one Embodiment of the digital broadcast receiver used by this invention. It is a figure which shows the display screen of the digital broadcast receiver used by this invention. It is a flowchart of the display control method in the broadcast receiver which concerns on this invention. It is a figure which shows the relationship between the page data of a display object, and the size of the screen display area of a data broadcast display part. It is a figure which shows the mode of the display of the page data in an initial state. It is a figure which shows the information of the memory in a digital broadcast receiver. It is a figure which shows the mode of a display of the page data at the time of performing focus control. It is a figure which shows the structure of BML data.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Antenna 2 ... Tuner 3 ... OFDM demodulator 4 ... TS decoder 5 ... Audio decoder 6 ... Video decoder 7 ... Mono media decoder 8 ... BML browser 9. ..Speaker / Earphone 10 ... Display device 11 ... CPU
12 ... Storage area (ROM / RAM)
DESCRIPTION OF SYMBOLS 13 ... Communication interface 14 ... Key interface 15 ... Operation key 16 ... Communication function 100 ... (Digital broadcasting) receiver

Claims (2)

A method for controlling display of page data in an apparatus for receiving digital broadcasting,
Receiving page data;
Reading an element ID recorded in a predetermined area in the memory;
Checking whether the read element ID is present in the received page data;
When the read element ID is present in the received page data, the element is visualized before the elements present in the other page data;
Visualizing unprocessed elements present in the page data;
Displaying page data including the visualized element on a display screen;
A display control method in a broadcast receiving apparatus, comprising: The step of reading the element ID recorded in the predetermined area in the memory into the broadcast receiving device, the step of checking whether or not the read element ID exists in the received page data, and the element ID read When present in the received page data, execute the step of visualizing the element prior to the element existing in the other page data, and the step of visualizing the unprocessed element present in the page data Page data that has a program for making it happen.

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