JP2006270139A - Data reproducer and data reproducing method and system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data reproducer which can display character information of a title, or the like, legibly even on a small screen. <P>SOLUTION: A portable terminal 100 comprises a tuner 101, a display section 113, a user input section 102, a number of display data calculating section 106, and a display period control section 109. The number of display data calculating section 106 calculates the number of pieces of character information which can be displayed simultaneously at a display section 113 based on the size of a screen for displaying the display data out of the screen of the display section 113, and a received display size. The display period control section 109 divides inputted display data into a plurality of sets each constituted of a calculated number of pieces of character information or a smaller number of pieces of character information, and displays respective sets of display data sequentially at the display section 113. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a playback apparatus that interprets and displays data sent from a network, and more particularly to a data display control technique.

  Digital terrestrial broadcasting has been started since 2003, and digitization of broadcasting is progressing. In digital broadcasting, not only video and audio data but also data such as program guides, data broadcasts, and captions can be multiplexed and transmitted, which is one of the major features. In addition, terrestrial digital broadcasting for portable terminals is started from 2005 to 2006. Since data is also transmitted in terrestrial digital broadcasting for portable terminals, it is possible to receive the same data service as that of a stationary receiver.

  In 2011, analog broadcasting was terminated and terrestrial broadcasting was to be integrated into terrestrial digital broadcasting. Digital terrestrial broadcasting is not only for entertainment, but also for daily life information, social information, disaster information, etc. Become the core media. Among them, the subtitle service and the character super service are important services as information acquisition means not only for subtitles of conventional movies but also for cases where it is difficult to hear audio. Note that subtitles, superimposing characters, and data broadcasting are defined in the third edition of ARIB TR-B14 as a digital broadcasting standard ARIB STD-B24 and operational rules.

  Subtitles in digital broadcasting are transmitted independently of video and audio, and are also processed and played back independently by a receiver. Since video and audio and subtitles cannot be played back synchronously as they are, the video and audio and subtitles can be played back synchronously by sending them with the timing information to be played and attaching them according to the time information. Realized.

  On the other hand, as a function of recent television receivers, simultaneous display of a plurality of images and simultaneous display of data broadcasting and images are possible. In this case, since the display size of the video is reduced, the subtitle display included in the video is also reduced, making it difficult to interpret the characters.

  For this reason, ingenuity and techniques have been developed to make the subtitles readable by the user even when the video size is reduced in this way.

In the invention of Patent Document 1, a method is proposed in which subtitle information is extracted from a sub-screen video when a plurality of videos are displayed, and the subtitle information is enlarged and displayed so as not to overlap with the subtitles of the main-screen video.
JP 07-236100 A

  In the invention of Patent Document 1, it is assumed that subtitles in a sub-screen are displayed outside the sub-screen, and that the subtitle display area itself is sufficiently large.

  However, in the case of a caption service for a mobile terminal, since the screen size is small, the size of characters is small, and it may be difficult to distinguish characters in the first place. However, a display area for displaying all the characters cannot be secured just by enlarging the subtitle characters. Patent Document 1 does not assume a case where all characters cannot be displayed, and an enlarged display that cannot display all characters cannot be performed.

  Also, subtitles are assumed to be displayed in synchronization with normal video and audio, and reproduction timing information necessary for this is sent out. However, for such characters that cannot be displayed once, the display timing is not known.

  The present invention has been made in view of these problems, and it is an object of the present invention to provide a data reproducing apparatus that can easily display character information such as subtitles even on a small screen.

  In order to achieve the above object, a data reproducing apparatus of the present invention includes a data input means for inputting aggregate data including display data including a plurality of character information, and one of the display data included in the input aggregate data. Display means for displaying a part or all of the display, display size receiving means for receiving an instruction from the user regarding the display size of the character information when the character information is displayed on the display means, and the display among the screens of the display means Character number calculation means for calculating the number of character information that can be displayed simultaneously on the display means based on the size of the screen for displaying data and the received display size, and the same or more than the calculated number A set is composed of a small number of character information, and the input display data is divided into a plurality of sets, and the display data is divided for each set. And display control means for controlling to display the next said display means, characterized in that it contains.

  As described above, according to the present invention, subtitles can be enlarged and displayed as specified by the user, so that subtitles can be read even in the case of a small screen such as a portable terminal. Further, compared with Patent Document 1, it is possible to perform an enlarged display that cannot display all subtitle character strings at once on a small-screen terminal, thereby further improving the determination of subtitle characters.

1. Configuration An embodiment of the present invention will be described below with reference to FIGS.

1.1. Configuration of Mobile Terminal Device 100 An embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a block diagram illustrating a configuration of a mobile terminal device 100 according to an embodiment of the present invention.

  In FIG. 1, a mobile terminal device 100 includes a tuner 101, a user input unit 102, a demultiplexer 103, a clock unit 104, a data interpretation unit 105, a display data number calculation unit 106, a display period calculation unit 107, a display data generation unit 108, The display period control unit 109, the video / audio interpretation unit 110, the display area management unit 111, the video / audio reproduction unit 112, and the display unit 113 are included.

  The tuner 101 receives data from the broadcast network and outputs it to the demultiplexer 103.

  The user input unit 102 receives input from a remote controller, a keyboard, and the like, and outputs the input content to the display data number calculation unit 106 and the display period control unit 109. In this embodiment, the user input unit 102 inputs the size of character information to be displayed from the user. Hereinafter, the size of the input character information is referred to as a display character information size. The size is a multiple of the normal character size. The input size may be a numerical value, a level, “large”, “medium”, “small”, etc., and is not limited thereby. FIG. 2 shows an example of a screen when the size of character information is input by the user input unit 102. In FIG. 2, it means that an input for enlarging the width of the character information twice and the height twice is made. In this embodiment, the default size of the character information is 16 pixels wide and 16 pixels high. In this case, the size of the character information input by the user is twice as large as the width and height. It becomes 32 pixels. However, the value itself is not limited.

  In addition, the user input unit 102 accepts input of a character information display skip button. When this input is received, the display period control unit 109 is instructed to skip display so that display of the current divided character string data described later is stopped and the next divided character string data is switched.

  Further, the user input unit 102 receives an input indicating whether or not the character string data can be overlapped with the video area. When it is possible to overlap, a video information duplication flag (not shown) is set, and when it is not overlapped, it is reset and output to the display area management unit 111.

  In this specification, the character information includes information representing characters such as kanji, kana characters, English characters, and numbers. However, the present invention is not limited to this, and includes information such as pictographs, pictograms, and images. In short, it may be a set of information that can identify individual information.

  The demultiplexer 103 separates the video packet, the audio packet, the data packet, and the clock information from the data received by the receiving unit 101, and outputs them to the video / audio interpreting unit 110, the data interpreting unit 105, and the clock unit 104, respectively.

  The clock unit 104 includes a clock (not shown), receives clock information from the demultiplexer 103, and corrects the clock.

  The data interpretation unit 105 interprets the data packet output from the demultiplexer 103 and extracts display data information and reproduction timing information 300.

  The display data number calculation unit 106 acquires the displayable area size (hereinafter, data displayable area size) of the character information held by the display area management unit 111, and the character size (display character information) input by the user input unit 102 The number of characters that can be displayed at one time (hereinafter, the number of characters that can be displayed) is calculated from the size) and the data displayable region size. The display data number calculation unit 106 divides the character string data by the number of displayable characters, generates divided character string data, generates the divided character string table 700 using the divided number as the divided character string data number, The data is output to the display data generation unit 108. However, when the character string data is divided by less than the number of displayable characters, the display data number calculation unit 106 cuts out the divided character string data at that time and packs the characters of the next character string data into the divided character string data. I won't do that. Further, when the display character information size input by the user input unit 102 exceeds the data displayable area size, the display data number calculation unit 106 cannot display the character information in the first place. Requests enlargement of displayable area size. When the display area management unit 111 enlarges the data displayable area size, the display data number calculation unit 106 calculates the number of displayable characters using the size, and creates the divided character string table 700. If the display character information size still exceeds the new data displayable area size, the character size input by the user is ignored and the display character information size is returned to the default and displayed.

  The display period calculation unit 107 displays each divided character string data from the number of characters and the number of divided character string data calculated by the display data number calculation unit 106, the reproduction timing information, and the erasure time in the control information. Calculate the period. In the calculation of the display period in the display period calculation unit 107, first, with respect to the reproduction timing information of the entire data packet, the difference between the erasure times of the control information or the difference from the next reproduction timing information is used as the entire display period. This period is a period in which the entire character string data included in the data packet is displayed. When the display character information size is the default, the entire character string data may be continuously displayed during this period. The display period calculation unit 107 divides the entire display period by the ratio of the number of characters of each divided character string data divided from the character string data, and sets it as the display period of each divided character string data. In other words, the divided character string data having a longer number of characters has a longer display period. This is because the larger the number of characters, the longer it takes to read. In this way, the display period calculation unit 107 calculates the display start and display end periods of each divided character string data and writes them in the divided character string table. Although the display period is determined by the ratio of the number of characters, it may be equally divided by the number of divided character string data, or each divided character string data is weighted according to the content of the modification of the divided character string data, and accordingly You may determine the ratio of a display period.

  The display data generation unit 108 holds the divided character string table, generates display character string data (hereinafter referred to as display character string data) according to the divided character string table, and in accordance with the support from the display period control unit 109, The display character string data is output to the display unit 113. The display data generation unit 108 reads the divided character string table and converts each divided character string into character string data for display (hereinafter referred to as display character string data) according to the display character information size and control information. When the control information is red, red display character string data is generated. When the control information is BOLD, display character string data with a thick character is generated.

  The display period control unit 109 compares the time indicated by the clock unit 104 with each display start and display end time of the divided character string table held by the display data generation unit 108, and displays the display data generation unit when the display start time coincides with the display start time. The output of the divided character string data is instructed to 108, and when the display end time coincides, the display unit 113 is instructed to end the display. However, when a display skip instruction is issued from the user input unit 102, the display of the currently displayed divided character string data is terminated and the next divided character string data is displayed regardless of the display start time.

  The video / audio interpreting unit 110 interprets the video data, audio data, and reproduction timing information separated by the demultiplexer 103, and outputs them to the video / audio reproducing unit 112. Also, the display area of the video data is interpreted, and the video area information is output to the display area management unit 111.

  The display area management unit 111 calculates a displayable area size (data displayable area size) of the character information from the video area information and the display pixel number information of the receiver, and generates an area information table 800 including them. Hold. By default, the display area management unit 111 calculates the video display area so that it is displayed in the center both vertically and horizontally with respect to the number of display pixels of the receiver, and calculates the data displayable area size from the area. When the video information duplication flag output from the user input unit 102 is set, the display area management unit 111 may display the video area in an overlapping manner, so regardless of the video display area, A predetermined display area is set as a data displayable area. When this flag is reset, an area that is not a video area is set as a data displayable area so as not to overlap with the video area. In the following, it is assumed that the video information duplication flag is reset. When the display data number calculation unit 106 cannot display the character string data with this size, the display area management unit 111 receives an area expansion request from the display data number calculation unit 106 so that the display area of the video is at the upper left corner. Recalculate and recalculate the data displayable area size from that area. At this time, the video area may be the upper right corner, the lower left corner, or the lower right corner, not the upper left corner, and is not limited thereto.

  The video / audio reproduction unit 112 receives the video data and audio data interpreted by the video / audio reproduction unit 112, and outputs them to the display unit 113 when the reproduction timing information matches the time of the clock unit 104. The video / audio interpretation unit 110 and the video / audio reproduction unit 112 are realized by an LSI such as an AV decoder, but may be realized by software, and are not limited thereto.

  The display unit 113 outputs the video / audio output from the video / audio reproduction unit 112 and the display data output from the display data generation unit 108 to a screen or / and a speaker or the like. The display data is displayed in the display character information size.

  The mobile terminal device 100 is an example of the data reproducing device of the present invention, and is not limited to the mobile terminal device, and may be a mobile phone, a mobile TV, a car navigation system, a DVD device, a small game machine, Any device that inputs and plays back is not limited thereto.

  The tuner 101 is an example of means for inputting data of the present invention. In addition to the tuner receiving the broadcast in this embodiment, the tuner 101 is a network adapter such as a communication line or a telephone line, a modem, an HDD, a DVD, a memory card, etc. The storage device may be connected to receive data of the storage device, but is not limited thereby.

  The demultiplexer 103 is an example of means for separating data according to the present invention, and is assumed to be realized by a transport decoder or the like for separating streams in the present embodiment, but is not limited thereto.

  In addition, the data interpretation unit 105, the display data number calculation unit 106, the display period calculation unit 107, the display data generation unit 108, the display period control unit 109, and the display area management unit 111 are each a program or a recording medium on which the program is recorded or the program. Realization with a written processor or the like is assumed, but it is not limited thereto.

1.2. Structure of data and table 1.2.1. Configuration of Data Received by Tuner 101 An example of data received by the tuner 101 is shown in FIG. In this embodiment, the data is composed of video / audio, data, and clock information. Each is composed of small data units called packets, which are called video packets, audio packets, data packets, and clock information, respectively. In this embodiment, the video packet is indicated by VPn, audio packet APn, data packet DPn, and clock information CLn (n = 1, 2, 3,...). On the transmission side, the video packet VPn, the audio packet APn, the data packet DPn, and the clock information CLn are multiplexed into a single stream 250 and transmitted to the mobile terminal device. The tuner 101 receives the stream 250 and outputs it to the demultiplexer 103.

  Video packets VP1 to VP3 and audio packets AP1 to AP3 are composed of compressed video and audio data and reproduction timing information 300 for decoding them.

  The data packets DP1 to DP3 are composed of display data describing contents such as subtitles, data broadcast content, and character superimposition, and reproduction timing information 300 for decoding the display data.

  The clock information CL1 to CL3 is time information serving as a reference for the reproduction timing information 300 for reproducing video / audio and data, and the time of the clock corrected at this time coincides with the time indicated by the reproduction timing information 300 of each data. At that point, decode and display. As a result, synchronized reproduction of video data, audio data, and display data is possible.

1.2.2. Configuration of Data Packets Data packets DP1 to DP3 received by the data interpretation unit 105 from the demultiplexer 103 are mainly composed of reproduction timing information 300 and display data information 400. FIG. 4 shows an example of data packets 500, 510 and 520 received. The display data information 400 stores character string data 410 and control information 420 such as the modification information of the character string display and the erasure timing of the character string data. In this embodiment, character information is used, but an image may be used, and the present invention is not limited to this. The reproduction timing information 300 indicates the timing for displaying the display data on the screen, and means that the character information is decoded and displayed when the clock unit 104 reaches the time of the reproduction timing information.

  FIG. 4 will be specifically described. In the data packet 500, the reproduction timing information 00:00:05 means that the subsequent character string data is displayed at 00:00:05. Control information color: red means that the subsequent character string data is displayed in red, and erasing 0:00:15 means erasing the subsequent character string data display at 0:00:15. Therefore, the data packet means that the character string “starts with the character string” is displayed in red at 00:00:05 and erased at 00:00:15.

  Similarly, the data packet 510 indicates that the character string data “ABCDEFGHIJKL” is displayed at 00:00:20. The control information BOLD of the data packet 520 means that the subsequent character is displayed in bold characters. This data packet 520 displays the character string “in 2005” “1 segment broadcasting” “starts in Japan” at 0:00: It is displayed in bold at 30 and erased at 00:00:55.

  The character string data in the above data packet is produced and transmitted on the transmission side so that it can be displayed on the screen at a time in the case of the default character size.

1.2.3. Detailed Description of the Divided Character String Table 700 FIG. 5 is a diagram showing an example of the divided character string table 700 generated by the display data number calculation unit 106 and the display period calculation unit 107.

  In FIG. 5, the divided character string data indicates an item of the divided character string data, and “starts with”, “starts with Japanese”, etc. are the contents of the divided character string data displayed at one time. The control information is an item of control information for the divided character string data, and in this example, “starts with” and “starts with Nihongo” in red characters, “in 2005,” “1 segment broadcasting”, “Japan "Starts with" means to display in BOLD. The number of characters indicates the number of characters of each divided character string data. The start time and end time indicate the time at which display of each divided character string data is started and ended, which is calculated by the display period calculation unit 107. In this example, “Drawing” is displayed from 00:00:05 to 00:00:10, and “Starting with Nihongo” is displayed from 00:00:10 to 00:00:15. means.

1.2.4. Detailed Description of Area Information Table 800 FIG. 6 is an example of the area information table 800 held by the display area management unit 111. In FIG. 6, the number of display pixels is the number of display pixels that can be output by this receiver, and indicates that the horizontal 256 vertical 192. The number of video pixels is the number of pixels of the video currently being played back, and indicates that the horizontal 256 vertical 160. The video display position is the position of the upper left corner of the area for displaying the video currently being played back, and is 0 horizontal and 16 vertical. Therefore, the video area indicates that the horizontal display is from 0 to 255 and the vertical display is from 16 to 175. The data displayable area size is the number of pixels of the data displayable area size, and indicates that the horizontal display is 256 vertical. The data display position is the position of the upper left corner of the area where data can be displayed, and is 0 horizontal and 176 vertical. Therefore, the area in which data can be displayed indicates that the horizontal range is 0 to 255 and the vertical range is 176 to 191 in this example.

  FIG. 7 is a screen display example corresponding to the area information table 800 of FIG. The abscissa 0 and the ordinate 16 to the horizontal 255 and the vertical 175 are image display areas, and the abscissa 0 and the ordinate 176 to the horizontal 255 and 191 are data display areas.

2. Operation 2.1. Description of Operation Flow of Portable Terminal Device 100 of the Present Invention Hereinafter, the flow of operation of the portable terminal device 100 of the present invention will be described with reference to FIGS.

  FIG. 8 is a flowchart showing a rough flow from reception of display data to display in the mobile terminal device 100 of the present invention. It is assumed that the display character information size has been input in the user input unit 102 and the displayable area size has been calculated in the display area management unit 111 based on the area size of video and audio. Further, here, the reproduction of video and audio is omitted.

  The tuner 101 receives a stream including data packets and outputs it to the demultiplexer 103 (S101).

  The demultiplexer 103 separates the video packet, the audio packet, the data packet, and the clock information, and outputs the data packet to the data interpretation unit 105 (S102).

  The data interpreter 105 interprets the data packet, separates it into display data and reproduction timing information, and outputs it to the display data number calculator 106 (S103).

  The display data calculation unit 106 displays the data at a time from the size of the data to be displayed (display character information size) received from the user input unit 102, the area information table 800 held by the display area management unit 111, and the display data information. The number of displayable characters is calculated, the character string data of the display data is divided by the number of characters, output to the display data generation unit 108, and stored in the divided character string table 700 (S104).

  The display period calculation unit 107 uses the number of characters of the divided character string data divided by the display data number calculation unit 106 and the number of divided character string data, and the reproduction timing information output from the data interpretation unit 105 to determine the character string data of each divided character string data. Display start and display end times are calculated, output to the display data generation unit 108, and stored in the divided character string table 700 (S105).

  The display period control unit 109 reads the divided character string table 700 from the display data generation unit 108 and checks whether the display start time and the display end time of each divided character string data match the time of the clock unit 104. The display data generation unit 108 is killed to display the divided character string data, or the display unit 113 is instructed to end the display (S106).

2.2. Description of Method for Calculating Displayable Character Number by Display Data Number Calculation Unit 106 The display data number calculation unit 106 is input by the user input unit 102 with respect to the displayable area size (width = Wmax, height = Hmax). When the display character information size is set (width = Cw, height = Ch), the number N of displayable characters is calculated as follows.

(When displaying character string data horizontally)
N = Wmax / Cw (where Hmax> = Ch)
(When displaying character string data vertically)
N = Hmax / Ch (Wmax> = Cw)
When the data displayable area size does not satisfy Hmax> = Ch or Wmax> = Cw in the above, the display data number calculation unit requests the display area management unit 111 to increase the data displayable area size. Then, the number N of displayable characters is calculated again by the above calculation with the data displayable area size calculated again. If the above condition is still not satisfied, the display character information size is set to the default size instead of Cw and Ch.

2.3. Description of Method for Calculating Data Displayable Area Size by Display Area Management Unit 111 Hereinafter, a method for creating a data displayable area of the area information table by the display area management unit 111 will be described. The width and height of the number of display pixels that can be output by this receiver are DWmax and DHmax, respectively, and the width and height of the number of video pixels output from the video / audio interpretation unit 110 are Vw and Vh, respectively. The upper left point of the area to be calculated is Vx, Vy, the upper left point of the data displayable area to be calculated is Dx, Dy, and the width and height of the area are Dw, Dh.

  The video Vx and Vy are calculated as follows. Assume that an image is displayed in the center of the display area.

Vx = (DWmax-Vw) / 2
Vy = (DHmax−Vh) / 2
The data displayable area calculation method differs depending on whether the data is displayed vertically or horizontally.

  In the case of the vertical display, Dx = Vx + Vw, Dy = 0, Dw = (DWmax−Vw) / 2, and Dh = DHmax. Although the data display area is the right part of the video area, it may be the left part (Dx = 0).

  In the case of horizontal display, Dx = 0, Dy = Vy + Vh, Dw = DWmax, and Dh = (DHmax−Vh) / 2. Although the data display area is the lower part of the video area, it may be the upper part (Dy = 0).

  In addition, when the video information information duplication flag is set, it may overlap with the video area. Therefore, Dx = 0, Dy = 0, Dw = DWmax, Dh = DHmax may be the same as the number of display pixels, It may be an arbitrary area.

  FIG. 9 shows an example of the area information table 810 in which the display area management unit 111 re-creates the area information table shown in FIG. In FIG. 9, the number of display pixels and the number of video pixels are the same as in FIG. 6, but the video display position is moved to the upper left corner, so that the horizontal coordinate 0, vertical coordinate 0 to horizontal 255, vertical 159 The display area is a data display area from the horizontal coordinate 0 and the vertical coordinate 160 to the horizontal 255 and vertical 191. The data display area is enlarged in the vertical direction. FIG. 10 shows a screen display example corresponding to the area information table 810 of FIG.

2.4. Description of Method for Calculating Data Displayable Area Size by Display Area Management Unit 111 when an Area Expansion Request is Received from Display Data Number Calculation Unit 106 Hereinafter, a display area when an area expansion request is received from display data number calculation unit 106 A method for creating a data displayable area of the area information table by the management unit 111 will be described. The width and height of the number of display pixels that can be output by this receiver are DWmax and DHmax, respectively, and the width and height of the number of video pixels output from the video / audio interpretation unit 110 are Vw and Vh, respectively. The upper left point of the area to be calculated is Vx, Vy, the upper left point of the data displayable area to be calculated is Dx, Dy, and the width and height of the area are Dw, Dh.

  Assuming that the video is displayed at the upper left corner of the screen, Vx = 0 and Vy = 0. It is not limited to the upper left corner.

  The data displayable area calculation method differs depending on whether the data is displayed vertically or horizontally.

  In the case of the vertical display, Dx = Vw, Dy = 0, Dw = DWmax−Vw, and Dh = DHmax. Although the data display area is the right part of the video area, it may be the left part (Dx = 0).

  In the horizontal display, Dx = 0, Dy = Vh, Dw = DWmax, and Dh = DHmax−Vh. Although the data display area is the lower part of the video area, it may be the upper part (Dy = 0).

2.5. Processing Flow of Display Data Number Calculation Unit 106 The processing flow for creating the divided character string table 700 by the display data number calculation unit 106 will be described below with reference to FIG.

The display data number calculation unit 106 detects the number of characters in the character information of the data packet from the data interpretation unit 105. (S1001)
The display data number calculation unit 106 reads the data displayable area size from the area information table. (S1002)
When displaying the character information in the horizontal direction (S1003), the display data number calculation unit 106 checks whether the height of the display character information size is equal to or less than the height of the data displayable area size (S1004).

  If the display character information size exceeds the height of the data displayable area size, the display data number calculation unit 106 issues a request to enlarge the data displayable area size to the display area management unit 111 (S1005). When the display area management unit 111 enlarges the data displayable area size (S1006), the process returns to S1002 to perform the same processing with the data displayable area size. When the enlargement is not performed, the display character information size is set to the default (S1007), and the process returns to S1002.

  When the display character information size is equal to or smaller than the data displayable area size, the display data number calculation unit 106 calculates the displayable character number N by the following formula (S1008).

N = Wmax / Cw (Wmax: width of displayable area size, Cw: width of display character information size)
When displaying the character information in the vertical direction, the display data number calculation unit 106 checks whether the width of the display character information size is equal to or smaller than the width of the data displayable area size (S1009).

  When the display character information size exceeds the width of the data displayable area size, the display data number calculation unit 106 issues a request to enlarge the data displayable area size to the display area management unit 111 (S1005). When the display area management unit 111 enlarges the data displayable area size (S1006), the process returns to S1002 to perform the same processing with the data displayable area size. When the enlargement is not performed, the display character information size is set to the default (S1007), and the process proceeds to S1002.

  When the display character information size is equal to or smaller than the data displayable area size, the display data number calculation unit 106 calculates the displayable character number N by the following formula (S1010).

N = Hmax / Ch (Hmax: height of displayable area size, Ch: height of display character information size)
The display data number calculation unit 106 initializes the divided character string data (S1011), reads the character information from the data packet and adds it to the divided character string data (S1012), and can terminate or display the character information. It is checked whether or not the number of characters N has been reached (S1013), and if it has been reached, the generated divided character string data and the number of characters are recorded in the divided character string table (S1014). Otherwise, the process proceeds to S1012. When the end of the character information is reached (S1015), the interpretation of this data packet is terminated. If it is not the end, the process returns to S1011 to create the next divided character string data.

  By performing the above processing for all data packets, each divided character string of all data packets is generated.

2.6. Processing Flow of Display Period Calculation Unit 107 Hereinafter, the processing flow of calculation of the display period of divided character string data by the display period calculation unit 107 and registration of the display period in the divided character string table will be described with reference to FIG.

  The display period calculation unit 107 reads the reproduction timing information from the data packet and holds it as the entire display start time Tts (S1101).

  The display period calculation unit 107 checks whether there is an erasure time of the control information (S1102), and if so, reads the erasure time and holds it as the entire display end time Tte (S1103). If not, the reproduction timing information of the next data packet is read and held as the entire display end time Tte (S1104).

  The display period calculation unit 107 holds the total display time Tt = Tte−Tts, and holds the initial value of the display start time Tps of the divided character string data as Tts (S1105).

  The display period calculation unit 107 holds the number of characters in the character information of the data packet as the total number of characters Nt (S1106).

  The display period calculation unit 107 reads the number of characters Np of the divided character string data from the divided character string table (S1107). The display period calculation unit 107 calculates the display time Tp of the divided character string data from the total display time Tt, the total number of characters Nt, and the number of characters Np of the divided character string data by the following formula (S1108).

Tp = Np / Nt * Tt
The display period calculation unit 107 calculates the display end time Tpe from the display time Tp and the display start time Tps of the divided character string data by the following formula, and displays the display start time Tps and the display end time Tpe in the divided character string table. The next display start time Tps = the current display end time Tpe (S1109).

Tpe = Tps + Tp
If the display start and display end time recording of all the divided character string data in the data packet is completed (S1110), the process is completed. If not, the process returns to S1107, and the same process is performed for the next divided character string data. I do.

  By performing the above processing on all data packets, the display start and display end timings of the divided character strings of the display data of each data packet are determined, and by generating the divided character string table, which character string in all the data packets When and how long is to be displayed is determined, and the clock unit 104 and the display period control unit 109 control the display start and end timings so that the divided character string data is sequentially time-divided. The display will be switched.

  As described above, the mobile terminal device 100 according to the present embodiment includes the tuner 100, the display unit 113, the user input unit 102, the display data number calculation unit 106, and the display period control unit 109. Tuner 100 receives data packet DPn including display data including a plurality of character information. The display unit 113 displays part or all of the display data included in the input data packet DPn. The user input unit 113 receives an instruction from the user regarding the display size of the character information when the character information is displayed on the display unit 113. The display data number calculation unit 106 calculates the number of character information that can be simultaneously displayed on the display unit 113 based on the screen size for displaying the display data among the screens of the display unit 113 and the received display size. . The display period control unit 109 divides the input display data into a plurality of sets so that one set is composed of the same or less number of character information as the calculated number, and the display data is divided into sets. Control is performed so that images are sequentially displayed on the display unit 113.

  The data packets DP1 to DP3 may further include reproduction timing information 300 for obtaining a period for displaying the input display data on the display unit 113. In this case, the mobile terminal device 100 is based on the reproduction timing information 300 included in the input data packets DP1 to 3 and the screen size for displaying the display data among the screens of the display unit 113 and the received display size. The display period calculation unit 107 that calculates the display period of each group displayed on the display unit 113 is further provided. Then, the display period control unit 109 controls the display data to be displayed on the display unit for each group within the display period of each group calculated by the display period calculation unit 107.

  In this embodiment, subtitles are used. However, text superimposition, a set of images, or data broadcasting content may be used.

  In this embodiment, an example in which one line of subtitles is displayed is taken up. However, when the data displayable area can be displayed in a plurality of lines and a plurality of columns with respect to the display character information size, the character string is displayed in a plurality of lines or a plurality of columns. Data may be displayed. At this time, at the display switching timing, not only a plurality of character string data is switched to the next character string data at a time, but also the display position of each character string data is sequentially lined or lined one by one. The scroll display may be performed such that one line of new character string data is added by shifting.

  In this embodiment, the data displayable area is only the lower part of the video display area. However, any area may be used as long as the upper, lower, right, and left parts of the video display area are empty.

  In this embodiment, the data is enlarged in the vertical and horizontal directions. However, only the vertical or horizontal enlargement may be used. Conversely, the data is reduced in the vertical or horizontal or both directions, and more character string data is displayed at a time. You may do it.

  The data reproduction apparatus according to the present invention is an apparatus that interprets and displays received data, and can be applied to all apparatuses having a function of dividing and displaying data to be displayed according to a data display area and a data amount. It is. For example, the present invention can be applied to a 1-segment digital television reception viewer, a mobile phone terminal with a digital broadcast reception function, a digital camera with a digital broadcast reception function, a mobile terminal that can be connected to a network, and the like.

Configuration diagram of portable terminal device 100 in an embodiment of the present invention FIG. 4 is an exemplary diagram of a screen for inputting a display character information size in the user input unit Illustration of video, audio, data packet and stream composed of them Example of data packet FIG. 4 is an exemplary diagram of a divided character string table 700 Example of region information table 800 Illustration of screen structure in case of area information table 800 Process flowchart of overall operation of portable terminal device 100 Example of region information table 810 Illustration of screen structure for region information table 810 Processing flow chart of display data number calculation unit 106 Processing flowchart of display period calculation unit 107

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Portable terminal device 101 Tuner 102 User input part 103 Demultiplexer 104 Clock part 105 Data interpretation part 106 Display data number calculation part 107 Display period calculation part 108 Display data generation part 109 Display period control part 110 Video / audio interpretation part 111 Display area management Part 112 video / audio reproduction part 113 display part

Claims (15)

Data input means for inputting set data including display data including a plurality of character information;
Display means for displaying part or all of display data included in the input set data;
Display size accepting means for accepting an instruction by the user for the display size of the character information when displaying the character information on the display means;
A number-of-characters calculating unit that calculates the number of character information that can be simultaneously displayed on the display unit based on the size of the screen for displaying the display data among the screens of the display unit and the received display size;
The input display data is divided into a plurality of sets so as to form one set with the same or less number of character information as the calculated number, and the display data is sequentially displayed for each set. Display control means for controlling to display on the means;
A data reproducing apparatus comprising: The aggregate data further includes time information for obtaining a period for displaying the input display data on the display means,
Each set displayed on the display means based on the time information included in the input set data and the screen size for displaying the display data among the screens of the display means and the received display size. A display period calculating means for calculating the display period of
The data according to claim 1, wherein the display control means controls the display data to be displayed on the display means for each set within the display period of each set calculated by the display period calculation means. Playback device. The time information is display time information indicating a time for displaying the input display data on the display means,
3. The data reproduction apparatus according to claim 2, wherein the display period calculation means calculates the display periods of the respective sets based on a difference between two display time information included in the aggregated data that changes in time. The data reproduction apparatus according to claim 2, wherein the display period calculation unit calculates the display period for each group according to the number of characters included in each group. 3. The display period calculation unit according to claim 2, wherein the display period calculation unit equally divides a period for displaying the input display data on the display unit by the number of sets of the display data, and calculates a display time of each group. Data playback device. The data reproducing apparatus according to claim 1, wherein the display data is any one of subtitles, superimposing characters, and data broadcasting data. The input means inputs a video signal together with the aggregate data,
The data reproducing apparatus according to claim 1, wherein the number-of-characters calculation unit calculates a size of a screen for displaying the display data by analyzing the input video signal. The input means inputs a video signal together with the aggregate data,
The display control means controls to display the input video signal on the display means, and shifts the display position of the video signal when displaying the display data compared to when not displaying the display data. The data reproducing apparatus according to claim 1, wherein a screen size for displaying the display data is increased. The input means inputs a video signal together with the aggregate data,
Further comprising superimposed display receiving means for receiving a user's selection as to whether or not to display the display data and the video signal in an overlapping manner;
The display control unit controls the input video signal to be displayed on the display unit, and sets a screen size for displaying the display data in accordance with the selection received by the superimposed display reception unit. The data reproduction device according to claim 1, wherein the data reproduction device is determined. The display control means detects whether or not the input display data is partitioned in advance, and when the display data is partitioned in advance, the display data is grouped even in the partition. Item 4. The data reproduction device according to Item 1. For part or all of the display data of each set, further comprising a timing receiving means for receiving display timing input by the user,
The data reproduction apparatus according to claim 1, wherein the display control unit controls the display unit to display another set at the received display timing after displaying any set of the display data. 2. The data reproducing apparatus according to claim 1, wherein the data number calculating means combines a plurality of display data and displays them at a time when the display size is changed. The data reproducing apparatus according to claim 1, wherein the display unit displays the display data in a plurality of lines in a scrollable manner. A data reproduction method in a data reproduction apparatus comprising display means for displaying character information,
Enter set data including display data including a plurality of the character information,
When displaying the character information on the display means, an instruction by the user is accepted for the display size of the character information;
Based on the size of the screen for displaying the display data among the screens of the display means and the received display size, the number of character information that can be simultaneously displayed on the display means is calculated,
The input display data is divided into a plurality of sets so as to form one set with the same or less number of character information as the calculated number,
A data reproduction method for displaying the display data on the display means sequentially for each set. Data input means for inputting set data including display data including a plurality of character information;
Display means for displaying part or all of display data included in the input set data;
A program for controlling a data reproduction device comprising: a display size receiving unit that receives an instruction from a user for a display size of the character information when displaying the character information on the display unit;
A function for calculating the number of character information that can be simultaneously displayed on the display unit based on the size of the screen for displaying the display data among the screens of the display unit and the received display size;
A function of dividing the input display data into a plurality of sets so as to form one set with the same or less number of character information as the calculated number;
A program for causing the data reproduction apparatus to realize a function of sequentially displaying the display data on the display unit for each set.

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