JP2003199065A - Transmission apparatus, reception apparatus, reception method, medium recording reception program therefor and communication system for realizing interactivity by using broadcast - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission apparatus, a reception apparatus and a communication system which are capable of interactivity for a one-way communication system such as TV broadcast, etc. <P>SOLUTION: A data transmission device 110 of the communication system repeatedly transmits the predetermined number of image data stored in a display image information storage section 123 and control information stored in a link information storage section 125. Also, a data reception device 150 is provided with a reception/separation section 151 for separating a pair of image data and control information from a broadcast wave, a received data remaining section 152 and a reproduction section 153 for remaining and reproducing the result of separation, a reproducing means for reproducing the remaining image data and outputting a video signal, and a control means for controlling the separation means so that the other data indicated in the control information in the remaining means are separated corresponding to a user's operation. According to this arrangement, the image data desired by a user can be sequentially reproduced to realize the interactivity by using a broadcast wave. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses one-way communication such as television (hereinafter referred to as TV) broadcasting to allow a transmitting side to transmit a broadcast program in response to a transmission request from each receiving side. The present invention relates to a data transmission device, a data reception device, a data reception method, a medium recording a reception program thereof, and a data communication system which perform a pseudo bidirectional communication process as if it were received.

[0002]

2. Description of the Related Art Today, various information provided by servers around the world can be received and displayed on a personal computer at home (hereinafter referred to as a personal computer) via a network connected by a telephone line or the like. it can. As a typical example thereof, the World Wide Web (WWW) of the Internet is known. WWW server is
As data for displaying a display image of one page on a personal computer, image information and control information for displaying the image information by fitting the image information in character information are transmitted to the personal computer. If the page is composed only of character information, only control information for displaying the character information is transmitted. The control information is HTML (Hyper Text M).
It is written in a language called “arkup Language”, and the browser in the personal computer displays each page of the WWW home page by interpreting and executing the HTML. The figure or character string on the displayed page
Another page that describes information related to the figure or character string is associated, and when the operator selects the display part with a mouse or the like, the browser provides the page to the WWW server. To get the information to display that page. Then, the obtained information is interpreted and executed, and the page is displayed.

Japanese Unexamined Patent Publication No. 7-322226 discloses a technique for transmitting control information for generating the above-mentioned interactive screen by multiplexing it into a broadcast program by using a terrestrial wave for TV broadcasting. In this technique, the program transmitting apparatus multiplexes data for instructing the configuration of the interactive screen, which is described in a language similar to HTML, into a broadcast program and broadcasts it. Upon receiving this, the program receiving device interprets the configuration instruction of the dialogue screen, and according to the instruction, combines the basic display elements held inside to construct the dialogue screen and display it on the screen of the broadcast program. .

[0004]

However, since the control information described in the above language describes various control contents for display, in order to display according to the control information, The receiving device must interpret and execute this one by one. Further, when the receiving device attempts to display the image information as provided by the WWW server, the image compressed with a high resolution and a high technology is expanded according to a specific format and is displayed according to the control information. Processing must be done. As a result of requiring such high-level processing, there is a problem that the load on the receiving device increases and the cost of the receiving device increases.

Further, in the above program receiving apparatus, it is not possible to interactively change the content of the broadcast program using the constructed interactive screen. In view of the above problems, the present invention, in a one-way communication system such as a TV broadcast, suppresses an increase in the load of the data receiving device and also provides pseudo interactivity between the data transmitting device and the data receiving device. Transmitter that can be realized,
An object of the present invention is to provide a receiving device, a receiving method, a recording medium for a receiving program, and a communication system.

[0006]

In order to solve the above-mentioned problems, a transmitter in a communication system for realizing interactivity by using broadcast waves, which stores a plurality of image data corresponding to one frame. The storage device includes a storage device, a second storage device that stores control information indicating a link to another image data for each image data of the first storage device, and a transmission device that repeatedly transmits a predetermined number of image data together with the control information. ing.

The transmitting means repeatedly reads a predetermined number of image data and corresponding control information from the first and second storage means, and the image data and control information read by the reading means. Are respectively placed in the video section and the blanking section of the television signal to multiplex the image data and the control signal, and the sending section for sending the multiplexed television signal as an analog broadcast wave. It may be provided.

The image data and control information in the first and second storage means are digitized, and the transmitting means stores a predetermined number of image data and control information corresponding thereto in the first and second control means. Retrieval means for repeatedly reading from the storage means, multiplexing means for converting the image data and control information read out by the readout means into digital data streams, respectively, and generating a multiplexed stream, and the multiplexed stream for digital broadcasting. It may be configured to include a sending unit that sends out as a wave.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) FIG. 1 shows a data communication system 10 according to a first embodiment of the present invention.
It is a block diagram which shows the structure of 0. The data communication system 100 includes a data transmission device 110 and a plurality of data reception devices 150.

The data transmission device 110 includes an information acquisition unit 11
1, transmission data generation unit 112, transmission data holding unit 11
3, a transmission data reading unit 114, a multiplexing unit 115, and a transmission unit 116. The data receiving device 150 includes a reception separation unit 151, a reception data holding unit 152, a reproduction unit 153,
The display unit 154, the control unit 155, and the signal receiving unit 156 are provided. (Description of Configuration of Data Transmission Device 110) Each configuration of the data transmission device 110 will be described below. (Description of Configuration of Information Acquisition Unit 111) Information Acquisition Unit 111
Includes an acquisition list storage unit 121 and a buffer (not shown) that holds information acquired from an external database such as a WWW server.

The acquisition list storage unit 121 stores an acquisition list indicating the acquisition destination of the information to be acquired by the information acquisition unit 111 and the file name of the information to be acquired, in association with the acquisition order number indicating the acquisition order. It is stored in advance. FIG. 2 is an explanatory diagram showing an example of the acquisition list 200 stored in the acquisition list storage unit 121. The file name extension ". "HTML" indicates that the HTML document is stored in the file, and the extension ". “Gif” indicates that the image information compressed in the GIF format is stored in the file. In addition, the extension ". au ”
Indicates that audio information in AU format is stored in the file.

In the acquisition list storage unit 121, for example, the information acquisition unit 111 is connected to the Internet and W
When the information is set to be acquired from the WW server, the acquisition list 200 as shown in FIG. 2 is stored. In the acquisition list 200, the URL of the WWW server including the directory portion is stored as the acquisition destination name 202 in association with the acquisition order number 201. Further, the home page provided by each WWW server is represented by one HTML document and an image information file and a voice information file whose file name is specified in the HTML document. As the file name 203 to be acquired, the file name of the HTML document describing the page, the file name of the image information, and the audio information file name are stored page by page.

In the acquisition list storage unit 121, the acquisition destination and the file name do not have to be described separately, and may be represented by one URL. If the acquisition destination of the information acquisition unit 111 is not the WWW server, the acquisition destination is the device address of the external database, and the file to be acquired is represented by the file address.

The information acquisition unit 111 includes an acquisition list storage unit 1
21, the URL of the acquisition destination and the file name of the information to be acquired are read in the order of acquisition order number 201, and the URL is read.
The WWW server indicated by is accessed to obtain the file with the file name. The information acquisition unit 111 gives a file name to the acquired file and stores it in the buffer. (Exemplary Description of Acquisition File) The contents of the file acquired by the information acquisition unit 111 will be specifically described below with reference to FIGS. 3, 4, 5, and 6.

FIG. 3 shows an HTML document 301 "Report.
It is explanatory drawing which shows "html." In addition, HTML document 3
01 “Report. The notation "html" means that the file name is "Report. The HTML document 301 stored in the file "html" is shown. Further, in each HTML document, the control code represented by <(character string)> is called a tag, and in principle, it is used as a pair of <(character string)> and </ (character string)>. The character string in <> represents the control content of the tag.

<HTML> in line 311 and </ HTML> in line 323 have one character string sandwiched between <HTML> and </ HTML> as one HTML document 30.
It shows that it is 1. <H1> and <// in line 312
"H1>" indicates that the character string "weather forecast" between them is the heading of this document.

<CENTER> on line 313 and line 315
</ CENTER> indicates that the display elements of the document represented by the character string sandwiched between them are displayed in a centered manner. Line 314 <IMG SRC
= “Weather.gif”> is image information 401 “Weather.gif” shown in FIG. “Gif” is included as a display element of the document at this position. The attribute "SRC =" of the tag <IMG> indicates the designation of the image information file, and the attribute value "" We
other. “Gif ″” indicates the file name of the designated file.

FIG. 4 shows image information 401 "Wea" which is an example of an image displayed on the first page of the WWW home page.
ther. It is an explanatory view showing "gif". As shown in FIG. 4, the image information file “Weather. The image information 401 stored in "gif" represents an image of a schematic Japan map showing the weather in various parts of Japan.

Line 316 and line 31 of HTML document 301
7 means that the character string "Tomorrow will have a springy merry nationwide" enclosed in <P> and </ P> is one paragraph (paragraph) of the text of this document. Represent <UL> in line 318 and </ UL> in line 322 are the display elements of the document represented by the character string between them.
Indicates that items are displayed in a bulleted form with unnumbered headings.

<LI> in lines 319 and 320 indicates that the character string up to and including the next <LI> or </ UL> will be one item in the itemized list. Line 319
<A HREF="Tokyo.html"> Tokyo </A> from the character string "Tokyo" to H shown in FIG.
TML document 501 “Tokyo. It means that there is a link on "html". A character string or an image with a link to another file, such as the character string "Tokyo", is called a hot spot or an anchor point. For example, when the hotspot “Tokyo” displayed on the monitor of the personal computer by the browser is selected by the user's mouse operation, the HTML document 501 “Tokyo.com” linked to the character string “Tokyo”.
html ”is read by the browser, and the display image is displayed. In addition, the attribute of the tag <A> is “HR
“EF =” indicates the designation of the link destination of the tag <A>, and its attribute value ““ Tokyo.html ”” indicates the file name of the link destination.

On line 320, <A HREF = "Osak"
a. html "> Osaka </A> is the HTML document 601" Osak "shown in FIG.
a. html ”is linked. The character string “Osaka” on line 320 is also the character string “Tokyo” on line 319.
It is a hotspot similar to that, and if the character string "Osaka" is selected, the H linked to the character string "Osaka"
TML document 601 "Osaka. The display image of "html" is displayed on the monitor.

<A HREF = “Weath” on line 321
er. The au “> voice commentary </A>” indicates that a link is put from the character string “voice commentary” to the voice information “Weather.au.” The character string “voice commentary” is a hotspot, When the character string “voice commentary” is selected, linked voice information “Weather
r. au ”is reproduced.

FIG. 5 shows an HTML document 501 "Tokyo" describing an example of the second page of the WWW home page.
o. It is explanatory drawing which shows "html." HTML document 50
Since the tag described in 1 has already been described, the description thereof will be omitted except for the description of links to other pages. <A HREF = "Repo on line 511
rt. html “> return </A> starts from the character string“ return ”to the HTML document 301“ Report.
html ”is linked.

FIG. 6 shows an HTML document 601 "Osak" describing an example of the third page of the WWW home page.
a. It is explanatory drawing which shows "html." HTML document 60
Since the tag described in 1 has already been described, the description thereof will be omitted except for the description of links to other pages. <A HREF = "Repo on line 611
rt. html “> return </A>” is the HTML document 301 “Report.h” shown in FIG.
"tml" indicates that a link is set up.

The information acquisition unit 111 may continuously acquire all the files shown in the acquisition list storage unit 121 and store the acquired all files in the buffer. The file may be acquired and stored in the buffer, and the next file may be acquired each time the processing of the page by the transmission data generation unit 112 described later is completed. (Description of Configuration of Transmission Data Generation Unit 112) The transmission data generation unit 112 includes a data conversion table storage unit 122 and a storage area (not shown) that is a work area for transmission data generation. The data conversion table storage unit 122 stores each HT
A tag table showing the control contents of the ML tags and flags corresponding to them, a font file in which character fonts for TV display are recorded for each purpose, and a link indicating a format for the data communication system 100 of link information describing hot spots. And an information table. The work area is a file storage area for holding an HTML document of one file, a tag storage area for securing a character string enclosed by <> in tags, and a character string other than tags. Character string storage area and a flag storage area which is an area for setting a flag for controlling the generation of display image information representing image data corresponding to one frame.
The character string written in the tag storage area and the character string written in the character string storage area are erased each time the processing corresponding to the tag (flag) is completed. If there are a plurality of flags in the flag storage area, they are set in order from the higher order and reset in order from the lower order.

FIG. 7 shows the data conversion table storage unit 122.
5 is an explanatory diagram showing an example of a link information table 700 stored in FIG. Note that “9” shown in the link information table 700 represents a decimal digit. As shown in the link information table 700, the link information includes index information 701 and hotspot information 702, and the index information 701 and hotspot information 70.
2 is represented by a character string sandwiched between <>.

The index information 701 is an information identification portion "INDEX =" indicating that it is index information.
And a file identification number represented by a 4-digit decimal number. The file identification number indicates the identification number of the file of the transmission data to which this index information belongs. The hot spot information 702 includes an information identifying unit “HOTSPOT” indicating hot spot information and XY coordinates “X = 999, Y indicating a cursor display position in a display image represented by corresponding display image information. = 999, ”
The command "GO_TO_PAGE" associated with the cursor displayed on the X-Y coordinates and the variable value of the command represented by a 4-digit decimal number. The variable value of the command indicates the identification number of another transmission data file linked to the cursor.

Further, the transmission data generation unit 112 handles a set of display image information, audio information and link information generated based on one HTML document as one transmission data file. The transmission data generation unit 112 stores one file of transmission data in each of the display image information storage unit 123, the voice information storage unit 124, and the link information storage unit 125 provided in the transmission data holding unit 113 described later. A storage area for storing the displayed image information, the audio information, and the link information in association with each other is set. Hereinafter, the storage area in the display image information storage unit 123 will be referred to as a display image information storage area, the storage area in the voice information storage unit 124 will be referred to as a voice information storage area, and the storage area in the link information storage unit 125 will be referred to as a link information storage area.

Further, the transmission data generating unit 112 has a display image information storage area, a voice information storage area, and a link information storage area set to store the display image information, the voice information, and the link information of the same transmission data file. The same identification number for reading the transmission data is attached to each of the above. Further, the transmission data generation unit 112 manages the voice information and the link information belonging to the same transmission data file as one file, and gives them the same identification number.
The identification number is given as an acquisition order number 201 in the acquisition list 200, which corresponds to the file name 203 of the acquired file, for example.

The transmission data generation unit 112 is the information acquisition unit 1
The unprocessed HTML document file acquired by 11 is taken out from the buffer in the information acquisition unit 111 according to the acquisition order number 201 of the acquisition list 200, written in the file storage area of the work area, and the index information of the link information table 700 is acquired. Index information is generated according to the format of 701. Further, the generated index information is stored at the head of the link information storage area of the transmission data holding unit 113.

Further, the transmission data generator 112 is
When the tag is read in order from the beginning of the ML document, the read tag is compared with the tag table, and the control content of the tag is interpreted. To interpret the control contents, write the character string following the tag start character "<" one by one to the tag storage area of the work area until the tag end character ">" appears, and in principle, when the tag end character appears. Interpretation is performed by collating the character string written in the work area, that is, the character string sandwiched between "<" and ">" with the tag table.

If the read tag is <(character string other than "A", "IMG" or "character string starting with" /) ")>, the transmission data generation unit 112 first sets a flag indicating the interpretation result. It is set in the flag storage area of the work area, and the character string sandwiched between the tag <> and the corresponding tag </> in association with the flag is secured in the character string storage area of the work area. The method of securing the character string sandwiched between the corresponding tags in the character string storage area is the same as that of the character string in the tag. Next, the secured character string is converted into a character image using the character font in the font file, and display image information in which the character image is arranged according to the flag is generated. Next, the generated display image information is added to the display image information storage area set in the transmission data holding unit 113. Also, what follows the tag <> is not a character string,
If it is another tag <(another character string)>, only the flag corresponding to the previous tag <> is set in the flag storage area, and the corresponding tag <(another character string)> is added. Perform processing.

If the read tag is <IMG>, the transmission data generation unit 112 has the attribute “SRC =”.
The image information file of ““ file name ”” specified by is taken out from the buffer of the information acquisition unit 111, decompressed in a format according to the extension of the file name, and has a fixed format such as bitmap data or graphic data. It is converted into image information represented by. For example, the file name extension of the specified image information file is ". gif ”
If so, decompress the image information according to the GIF format,
Convert to image information in a predetermined format. If there is a higher-order flag indicating the control content for the converted image information, the display content is generated according to the control content, and if not, the image is arranged so that the image is arranged at the display position by the initial setting. Then
The generated display image information is added to the display image information storage area.

If the read tag is the tag <A>, the transmission data generator 112 has the attribute “H”, which is the attribute of the tag <A>.
The ““ link destination file ”” specified by REF = ”has the extension“. It is checked whether it is audio information such as "au". If it is voice information, the voice information is extracted from the acquisition list storage unit 121 and converted into voice information of a predetermined fixed format, and the voice information after conversion is stored in the voice information storage area.

If it is not voice information, a character image is generated from the character string sandwiched between the tag <A> and the tag </A>, and the generated character image is displayed at a display position where it is arranged by an upper flag, or The display image information is generated so that the area for displaying the cursor is opened from the display position by the initial setting. The generated display image information is additionally stored in the display image information storage area of the transmission data holding unit 113. Next, XY at the cursor display position, which is an empty area
Calculate the coordinates. Further, referring to the hotspot information 702 of the link information table 700, the calculated XY coordinates of the cursor display position and the attribute “HREF” of the tag <A>.
From the ““ link destination file name ”” specified by
Generate hotspot information. At this time, referring to the acquisition list 200, the acquisition order number 201 corresponding to the file name 203 is checked from the "" link destination file name "" of the tag <A>, and the acquisition order number 201 is identified for the file. Describe it in the hotspot information as a number. If the link destination file name does not exist in the acquisition list, the file name of its own file is set as the link destination file name. Next, the generated hot spot information is added and stored in the link information storage area of the transmission data holding unit 113.

When the transmission data generation unit 112 completes all the processing for the contents described in one HTML document by the above processing, the transmission data generating section 112 actually outputs the display image information stored in the display image information area. The identification number attached to the display image information area is imaged and written at a fixed position in the area not displayed. In addition, although the identification number is represented by a four-digit decimal number here, the identification number may be any number of digits, a binary number, or a number or a symbol with mixed characters. It may be. It may be represented by a figure or a barcode. It may also be a file name. Further, the voice information stored in the voice information storage area and the link information stored in the link information storage area are attached to the corresponding storage areas in the same manner as attached to a general digital data file. Attach the identification number.

By the above processing, the transmission data generating unit 112 transmits the first page of the WWW home page from the acquired HTML document 301, voice information (not shown), image information 401, HTML document 501 and HTML document 601. Data 800, second page transmission data 900, and third page transmission data 1000 are generated. (Example of transmission data generated by the transmission data generation unit 112) FIG. 8 shows an HTML document 301 and voice information “W”.
easer. au ”and the image information 401, the transmission data 800 of the first page of the WWW home page
FIG. FIG. 9 is an explanatory diagram showing the transmission data 900 of the second page of the WWW home page generated from the HTML document 501. FIG. 10 is an explanatory diagram showing the transmission data 1000 of the third page of the WWW home page generated from the HTML document 601.

The transmission data 800 shown in FIG. 8 represents the first page of the WWW home page, and includes display image information 801 and voice information 802, and link information 803 associated with the display image information 801. FIG. 8A shows
FIG. 8 is an explanatory diagram showing the content of display image information 801 using a display image displayed based on display image information 801.
FIG. 8B is an explanatory diagram showing the audio information 802. FIG. 8C is an explanatory diagram showing the content of the link information 803.

An area indicated by a broken line above the display image information 801 indicates a non-display area common to all display image information. The non-display area is not displayed on the display screen of the display unit 154. At the position of the upper right corner of the non-display area, the identification number “0001” represented as an image by the transmission data generation unit 112 is written.
In the displayed area, the character string represented by the character code in the original file is represented as an image, and together with the image represented as the image information, one screen is displayed as one image as a whole. Represents an image.

The voice information 802 is voice information linked to the character string "voice commentary" which is a hot spot in the HTML document 301. As shown in FIG. 8B, the identification number “0001” is attached to the file storing the audio information 802. Like the voice information 802,
As shown in FIG. 8C, the identification number “0001” is added to the file storing the link information 803. The link information 803 is not displayed because it is information for control. The line 811 in the link information 803 is the index information already described, and indicates that the file identification number of the transmission data 800 is “0001”.

Line 812 is the command "GO" at the position represented by the coordinate value (100, 600) on the display image information 801.
_TO_PAGE (0002) ”is associated with it, indicating that the image of the cursor held by the data receiving device 150 side should be displayed at this position. The instruction “GO_TO_PAGE (0002)” is “000
2 ”to display the page represented by the transmission data 900 having the identification number.

The line 813 is the command "GO" at the position represented by the coordinate value (100, 700) on the display image information 801.
_TO_PAGE (0003) ”is associated with it, indicating that the cursor image should be displayed at this position. Command "GO_TO_PAGE (000
3) ”is the transmission data 1 with the identification number“ 0003 ”
Indicates an instruction to display the page represented by 000.

Transmission data 900 shown in FIG. 9 represents the second page of the WWW home page, and display image information 901.
And the link information 9 associated with the display image information 901.
It consists of 02. FIG. 9A shows the display image information 9 using the display image displayed based on the display image information 901.
It is explanatory drawing showing the content of 01. FIG. 9B is an explanatory diagram showing the content of the link information 902.

The display image information 901 is the display image information 80.
Similar to No. 1, the identification number "0002" is written in the upper right corner of the non-display area indicated by the broken line. Also, FIG. 9 (b)
As shown in, the file storing the link information 902 is assigned the identification number "0002". A line 911 in the link information 902 indicates that the file identification number of the transmission data 900 is “0002”.

The line 912 is the command "GO" at the position represented by the coordinate value (050, 400) on the display image information 901.
_TO_PAGE (0001) ”is associated with it, indicating that the cursor should be displayed at this position.
The instruction “GO_TO_PAGE (0001)” is “00
01 ”to display the page represented by the transmission data 800 having the identification number.

The transmission data 1000 shown in FIG.
Represents the third page of the W homepage and displays image information 10
01 and link information 1002 associated with the display image information 1001. FIG. 10A is an explanatory diagram showing the content of the display image information 1001 using the display image displayed based on the display image information 1001. Figure 10
(B) is an explanatory view showing the contents of the link information 1002.

An identification number "0003" is written as an image in the upper right corner of the non-display area of the display image information 1001. In addition, as shown in FIG.
An identification number "0003" is attached to the file storing the link information 1002. Link information 1002
The middle row 1011 indicates that the identification number of the transmission data 1000 is “0003”.

On line 1012, the command "GO_TO_PAGE (0001)" is associated with the position represented by the coordinate value (050, 400) on the display image information 1001, and the cursor should be displayed at this position. It means that. The command "GO_TO_PAGE (0001)"
It represents a command to display the page represented by the transmission data 800 having the identification number “0001”. (Exemplary explanation of processing of information acquisition unit 111 and transmission data generation unit 112) Hereinafter, the files illustrated in FIGS. 3, 4, 5, and 6 are acquired, and the files illustrated in FIGS. 8, 9, and are used. Information acquisition unit 111 until 10 transmission data are generated
The process of the transmission data generation unit 112 will be specifically described. (Processing of Information Acquisition Unit 111) The information acquisition unit 111 uses the WW on the Internet shown in the acquisition list storage unit 121.
A request is made to the W server for connection, and the HTML document 301 “Report. html ”
To get. Then, the acquired HTML document 301 has a file name “Report. html ”and store it in the buffer. Similarly, the compressed image information 401, the HTML document 501, and the HTML document 6 are sent from the WWW server.
Get 01. (Processing of Transmission Data Generation Unit 112) Transmission Data Generation Unit 1
12 is the display image information 8 in the transmission data holding unit 113.
01 storage area, audio information 802 storage area, and link information 803 storage area is set for storing the transmission data 800, and the identification number for reading the transmission data 800 is set in the set storage area. 0001 ”is added. The unprocessed HT from the buffer of the information acquisition unit 111
The ML document 301 is extracted, and the extracted HTML document 3
01 is written in the file storage area of the work area.

The transmission data generation unit 112 uses the file name “Report. htm
l ”, the index information“ <INDEX = 0001> ”shown in the row 811 of the transmission data 800 representing the first page of the WWW homepage is generated, and the index information“ <INDEX = 0001> ”is generated at the head of the link information 803 storage area in the transmission data holding unit 113. Store.

The transmission data generation unit 112 reads the tag <HTML> in line 311 from the HTML document 301. The character string "HTML" in the read tag <HTML> is
It is secured in the tag storage area in the work area, and is interpreted by referring to the tag table in the data conversion table storage unit 122,
The start line of the TML document 301 is identified. After that, the character string "HTML" in the tag storage area is erased.

Next, the transmission data generator 112 determines the line 3
The tag <H1> of 12 is read, the tag <H1> is interpreted by referring to the tag table, and a heading flag is set in the flag storage area in the work area. The heading flag is the tag <H
The character string following 1> is a headline, indicating that it should be displayed using a headline font. Subsequently, until the tag </ H1> appears, the character string “weather forecast” is read as a result while writing the character string following the tag <H1> character by character in the character string storage area, and the tag </ H1>
Appears, the character string "weather forecast" in the character string storage area
Is converted into a display image information by a font for a predetermined heading. The generated display image information is added to the display image storage area set in the transmission data holding unit 113. Reset the heading flag set in the work area,
The character string "weather forecast" secured in the character string storage area and the character string "H1" secured in the tag storage area are deleted.

The transmission data generation unit 112 reads the tag <CENTER> in the line 313 and sets the centering flag in the work area. The centering flag indicates that the character string read subsequently to the flag should be displayed by centering. Next, when the character string following the tag <CENTER> is to be read, there is no character string, so the process moves to the reading of line 314.

The transmission data generation unit 112 reads the tag <IMG SRC = "Weather.gif""in the line 314 and reads the read tag <IMG SRC =" Wea ".
ther. The gif "> is interpreted by referring to the tag table. The transmission data generation unit 112 determines that the file name is" Wea ".
ther. It is checked whether or not the file of the image information 401 represented by "gif" exists in the buffer of the information acquisition unit 111, and the file is read, and thus it is read. Next, the image information compressed and stored in the read file. 401
Is converted into, for example, bitmap data according to the GIF decompression method.

The transmission data generation unit 112 reads the tag </ CENTER> on the line 315 and arranges the image information 401 converted into bitmap data according to the centering flag set in the work area. The display image information generated in this way is added to the display image storage area in the transmission data holding unit 113. Next, the centering flag of the work area is reset.

The transmission data generator 112 reads the tag <P> on line 316 and sets the paragraph flag. The paragraph flag indicates that the character string following the flag up to the tag </ P> should be displayed as one paragraph in which a blank line is inserted immediately after that. In the same way as the "weather forecast" in line 312, the character string "Tomorrow will be spring and nationwide will be cheerful" will be read and secured in the character string storage area of the work area. Then, read the tag </ P> and hold the character string "Tomorrow will be a nationwide spring cheerful mood."
Is converted into an image with the paragraph font stored in the font file, and the transmission data holding unit 113 is used as display image information.
To the storage area for the display image information 801 inside. Further, the work area is reset.

Similarly, the transmission data generator 112 determines that the line 3
The tag <UL> of 18 is read, interpreted, and the itemized flag is set in the work area. The itemized flag indicates that, after the flag, a character string that is interpreted as a character string of one item should be itemized and displayed as an item without a number.
The transmission data generation unit 112 reads the tag <LI> in line 319, refers to the tag table, interprets that it is the beginning of one item, and sets an item flag in the flag storage area. The item flag is tag <LI> or tag </ UL>
Indicates that the display position of the display image should be broken when the is read.

The transmission data generation unit 112 uses the tag <LI>.
To the tag <A HREF = "Tokyo.htm.
l ”> is read and written in the tag storage area. The transmission data generation unit 112 follows the tag <A H according to the tag table.
Interpret REF = “Tokyo.html”> and set a link flag in the flag storage area. The link flag checks whether the link destination file is voice information from the extension of the attribute value in the tag <A>. If the link information is voice information, the voice information is converted into a predetermined format, and the voice information after conversion is converted. Is stored in the voice information storage area, and the processing regarding the tag <A> should be ended. If the link destination file is not voice information, the link flag is placed immediately before the character string linked by the tag <A>, which is sandwiched between the tag <A> and the tag </A>. A space for two characters is provided as a display area to image a character string, display image information of the character string is generated, and further, hot spot information should be generated according to the format of the hot spot information 702. Showing.

The transmission data generator 112 uses the tag <A H
The character string "Tokyo" following REF = "Tokyo.html"> is read until the tag </A> appears, and the character string storage area of the work area is written. Transmission data generation unit 112
Reads the tag </A>, creates an image of the character string “Tokyo” with a blank space for two characters immediately before the character string “Tokyo”, and arranges the character string “Tokyo” according to the bulleted flag. Then, the display image information is generated and added to the display image information 801 storage area of the transmission data holding unit 113. Next, the transmission data generation unit 112 calculates the coordinates of the display position of the cursor. Furthermore, the calculated coordinate value (100, 600)
And the attribute value "T" stored in the tag storage area of the work area.
okyo. html ”, the hotspot information shown in the row 812 of FIG. 8 is generated. Next, the generated hotspot information is added to the link information 803 storage area in the transmission data holding unit 113. After that, the character string in the tag “A H written in the tag storage area of the work area is written.
REF = “Tokyo.html” ”and the character string“ Tokyo ”written in the character string storage area are erased, and the link flag is reset.

After reading the tag <LI> on line 320, the transmission data generation unit 112 breaks the display position of the display image because there is an item flag, and in the same way as the process on line 319, the character string “Osaka” is displayed. And the hotspot information shown in the row 813 of FIG. 8 is generated. The generated display image information is transmitted data holding unit 113.
Added to the storage area for display image information 801 inside the link information 8 in the transmission data holding unit 113.
Add to the 03 storage area. After this, the character string in the tag "A
HREF = “Osaka.html” ”and the character string“ Osaka ”are deleted, and the link flag is reset.

Next, the transmission data generating section 112 determines the line 3
After reading the tag <LI> of 21, there is an item flag, so the display position of the display image is changed to a line feed, and the tag <A HREF
= Set the link flag according to "Weather.au">. When the extension of the attribute value is checked according to the link flag, the linked file is audio information in the AU format. Therefore, the AU format is converted into a predetermined fixed format,
The converted voice information is stored in the voice information 802 storage area.

Next, when the tag </ UL> on the line 322 is read and the end of itemization is interpreted, the itemization flag and the item flag are reset. Further, when the tag </ HTML> in the line 323 is read and the end of the HTML document 301 is interpreted, the generation processing of the transmission data 800 is completed. After that, the transmission data generation unit 112 checks that there is an unprocessed HTML document 501, and in the transmission data holding unit 113, a storage area for display image information 901,
Transmission data 90 including a storage area for link information 902
Set a storage area for storing 0, and in both set storage areas,
An identification number “0002” for reading the transmission data 900 is assigned. The unprocessed HTML document 501 is retrieved from the buffer of the information acquisition unit 111, and the retrieved HTML document 501 is retrieved.
The document 501 is written in the work area.

The transmission data generation unit 112 determines the file name "Tokyo.txt" added to the HTML document 501. html ”
From the index information “<IN
DEX = 0002> ”, and the transmission data holding unit 1
It is stored at the head of the 13 storage areas for link information 902.
The transmission data 900 can be generated from the HTML document 501 and the transmission data 1000 can be generated from the HTML document 601 in the same manner as the transmission data 800 is generated from the HTML document 301 and the image information 401. Is omitted. (Transmission data holding unit 113, transmission data reading unit 114,
Description of Configurations of Multiplexing Unit 115 and Transmitting Unit 116) The transmission data holding unit 113 includes a display image information storage unit 123, a voice information storage unit 124, and a link information storage unit 125 that can be read simultaneously.

The display image information storage section 123 stores, for example, R
It is realized by an AM, a hard disk device, or the like, and has a plurality of display image storage areas set by the transmission data generation unit 112. Each display image information storage area is one of the display image information generated by the transmission data generation unit 112.
Holds files. The voice information storage unit 124 is RA
It is realized by an M or a hard disk device, and has a plurality of audio information storage areas set by the transmission data generation unit 112. Each audio information storage area holds the audio information for one file generated by the transmission data generation unit 112.

The link information storage unit 125 is realized by a RAM or a hard disk device, and has a plurality of link information storage areas set by the transmission data generation unit 112. Each link information storage area holds one file of the link information generated by the transmission data generation unit 112. The transmission data reading unit 114 simultaneously displays the display image information, the voice information, and the link information in the same transmission data file from the respective storage areas set in the transmission data holding unit 113 in the order of the identification number of the transmission data files. Read out and output each to the multiplexing unit 115. In addition, after the file of the transmission data corresponding to the identification number at the end is read, the transmission data having the identification number “0001” is returned, and the transmission data is read in the order of the identification numbers. That is,
The transmission data reading unit 114 cyclically reads the transmission data stored in the transmission data holding unit 113 in the order of the identification numbers, and outputs it to the multiplexing unit 115. At that time, the reading method is different as follows depending on whether or not the audio information is present. That is, the transmission data reading unit 114
If the voice information does not exist, the transmission data file is read once, and then the transmission data file having the next identification number is read. If voice information exists, read the voice information from the transmission data file,
Further, after the display image information and the link information of the transmission data file are read out a plurality of times during the time required to reproduce the audio information, the process proceeds to read out the transmission data file of the next identification number. For example, if the reproduction time of the audio information is 2 seconds, the transmission data reading unit 114 reads the audio information once, and also reads the display image information and the link information 60 times (2 seconds * 30 frames / second), and then Move to reading of the transmission data file of the identification number. This secures the transmission time of voice information.

The multiplexing unit 115 includes a transmission data reading unit 11
The display image information (including the audio information) read by 4 and the link information are multiplexed and output to the transmitting unit 116. As the multiplexing method, for example, a conventional character multiplexing technique for TV broadcasting is used. In this case, the display image information and the audio information are the same as in the conventional broadcast program composed of images and audio,
Also, the link information is multiplexed in the same manner as general character information multiplexed in a broadcast program. That is, when there is no audio information, the display image information is transmitted in the video section of the television video signal for one frame, and the link information is transmitted in the blanking section of the television signal for the one frame. . If audio information exists, the audio information is in the television audio signal, and the display image information and the link information are in the video section and the blanking section of the television video signal over a plurality of frames required for the reproduction time of the audio data. It will be posted and sent.

The transmitting section 116 sequentially transmits the transmission data multiplexed by the multiplexing section 115 by TV broadcast terrestrial waves. (Explanation of Transmission Method of Transmission Data) FIG.
FIG. 6 is an explanatory diagram showing a method of transmitting transmission data according to No. 6; Note that FIG. 11 illustrates a case where the transmission data from the first page to the n-th (n is a natural number) page are generated by the transmission data generation unit 112. In addition, FIG.
Represents a set of display image information and audio information having the same identification number as one transmission unit corresponding to a normal broadcast program of TV, and link information having one identification number is multiplexed with the broadcast program. 1 associated with general text information
It is expressed as a transmission unit.

As shown in FIG. 11, the display image information, the audio information, and the link information stored in the same transmission data file are associated with the same identification number, and further, here, further. Corresponding to the time, it is transmitted. Then, the transmission data from the first page to the nth page held in the transmission data holding unit 113 is repeatedly transmitted in the order of the identification numbers.

Here, the transmission data reading section 114 is used.
However, the display image information storage unit 12 stores the display image information, the voice information, and the link information stored in the same transmission data file.
3 and the voice information storage unit 124 and the link information storage unit 125 are read at the same time, whereby the display image information, the voice information, and the link information are transmitted in association with both the identification number and the transmission timing. The display image information (including audio information) and the link information do not necessarily need to be transmitted at the transmission timing. For example,
The transmission data reading unit 114 is composed of two components, a first reading unit and a second reading unit, and the first reading unit is in the display image information storage unit 123 and the voice information storage unit 124.
And the combination of the display image information and the audio information generated in the link information storage unit 125 are continuously read and output to the multiplexing unit 115. The second reading unit continuously outputs only the link information generated in the link information storage unit 125. It may be read out and output to the multiplexing unit 115. In this way, even when the display image information and the link information stored in the same transmission data file are transmitted from the transmission unit 116 at the same timing, they may not necessarily coincide with each other. Since an identification number is attached to each of the link information, the data receiving device 150 is assigned with the identification number.
Corresponding display image information and link information can be captured on the side.

Further, the multiplexing unit 115 multiplexes the display image information (including audio information) generated by the transmission data generation unit 112 and the link information, and the transmission unit 116 TVs the multiplexed transmission data. Although it is assumed that the display image information and the link information are transmitted in a multiplexed manner, the display image information and the link information do not necessarily have to be transmitted in a multiplexed manner. The link information may be transmitted using a telephone line and a modem. Moreover, you may make it transmit using multiple channels.

Further, when satellite digital broadcasting is used as a data transmission method, for example, compression encoding technology and multiplexing technology based on the MPEG2 video standard and system standard are used, display image information is I picture, and audio information is Alternatively, the link information may be transmitted as private information. As described above, when the display image information, the voice information, and the link information can be transmitted as digital data, the imaged identification number is written in the non-display area in the display image information as described above. The display image information and the voice information can be simply added with the identification number and transmitted, like the link information.
The MPEG2 standard is described in detail in "Latest MPEG Textbook" (released by ASCII Publishing Co., Ltd.).

FIG. 31 is an explanatory diagram of a multiplexed stream transmitted when satellite digital broadcasting is used. The upper part of the figure shows a transport stream according to the MPEG2 standard. This transport stream is
It is multiplexed by the multiplexing unit 115. “V1, A1, L1” in the transport stream indicates display image information, audio information, and link information read from the transmission data file corresponding to the identification number 1 and multiplexed.
The same applies to “V2, A2, L2” to “Vn, An, Ln”.

"V1" is I in conformity with the MPEG2 standard.
This is a video elementary stream that represents the display image information converted into an (Intra) picture, and is given a PID (Packet IDentifier) “0x0100” for distinguishing the streams. The same applies to "V2" and thereafter. "A1"
Is an audio elementary stream representing audio information converted in accordance with the MPEG2 standard, and is given a PID “0X0101” for distinguishing the streams. The same applies to "A2" and thereafter.

"L1 to Ln" are private sections conforming to the MPEG2 standard for carrying each piece of link information, and are given a table ID "0xB0" for distinguishing the private sections and further distinguishing individual link information. To do this, an identification number is set in the table ID extension. In each link information, at least one set including a partial image area in the corresponding display image and information indicating a link to another display image is set. For example, in "L1", the coordinates (X, Y) =
Identifier 0 for the image area centered at (100, 600)
A link (GOTO_PAGE (0002)) to the display image of 002 is set, and a link (GOTO_PAGE (0002) to the display image of the identifier 0003 is set for the image area centered on the coordinates (X, Y) = (100, 700). 0002)) is set.

The correspondence between the PID and the identification number is based on the PMT (Prgram Map Ta) conforming to the MPEG2 standard.
ble) is set. As shown in the figure, component_ in PMT
The correspondence between the PID and the identification number may be described in the descriptor in the PMT, such as setting the identification number in tag. In this case, the video elementary stream, the audio elementary stream, and the private section are created by the transmission data generation unit 112 and stored in the transmission data holding unit 113.
One set of the video elementary stream, audio elementary stream, and private section held in the transmission data holding unit 113 corresponds to the above-mentioned transmission data file. Transmission data holding unit 113
The one set of the video elementary stream, the audio elementary stream, and the private section, which are held in, are all read once. The transmission data reading unit 114 cyclically reads all the transmission data files. Further, the transport stream of FIG. 31 is created by the multiplexing unit 115.

In this way, by multiplexing n sets of display image information, audio information, link information and PMT in the transport stream, it becomes possible to easily transmit using satellite digital broadcasting. (Schematic processing procedure of the entire data transmission device 110)
The processing procedure of the data transmission device 110 will be specifically described with reference to FIGS. 12 to 14.

FIG. 12 is a flow chart showing a schematic processing procedure of the entire data transmitting apparatus 110. The information acquisition unit 111 acquires predetermined information from an external database,
The data is stored in the internal buffer (step S1101). The transmission data generation unit 112 interprets the information acquired by the information acquisition unit 111, generates display image information, audio information, and link information, and stores the display image information, the sound information, and the link information in the transmission data holding unit 113 (step S1102).

The transmission data reading unit 114 cyclically reads the transmission data in the transmission data holding unit 113 in the order of the identification numbers (step S1103). The multiplexing unit 115 multiplexes the read display image information (including audio information) and the link information, and the transmitting unit 116 transmits the multiplexed transmission data using TV broadcast terrestrial waves ( Step S
1104). (Processing Procedure of Information Acquisition Unit 111) FIG. 13 is a flowchart showing an example of a procedure of information acquisition processing by the information acquisition unit 111.

The information acquisition unit 111 is the acquisition list storage unit 1.
The acquired information list in 21 is checked to check whether there is information that has not been acquired yet (step S120).
1). If it does not exist, the information acquisition process ends. If it exists, the acquisition destination address (UR
One L) is taken out (step S1202). A connection is requested to the external database based on the fetched address (step S1203), and it is confirmed whether the connection is successful (step S1204). In the case of failure, the process returns to step S1203 (step S1204).

When the connection is successful, the file name of the information not yet acquired is read from the acquired information list, the target file is acquired from the external database and stored in the internal buffer (step S1205). Step S
Return to 1201. (Processing Procedure of Transmission Data Generating Unit 112) FIG. 14 is a flowchart showing an example of a procedure of transmission data generating processing by the transmission data generating unit 112.

The transmission data generation unit 112 is the information acquisition unit 1
The buffer in 11 is referenced to check whether there is an unprocessed HTML document (step S1301). If not, the display image generation process ends. If there is, a storage area for storing transmission data is set in the transmission data holding unit 113, an identification number is assigned to the set storage area, and one unprocessed HTML document is taken out from the buffer (step S1302).

Index information indicating the file name of the transmission data is created from the file name of the extracted HTML document and added to the link information storage area set in the transmission data holding unit 113 (step S1303). One character is read from the extracted HTML document and written in the character string storage area (step S1304).

It is checked whether the read character is the tag start character "<" (step S1305). If it is the tag start character, the process moves to step S1307. If it is not the tag start character, the read character is added to the character string storage area in the work area and written, and the process returns to step S1304 (step S1306). The next character is read one character (step S1307). It is checked whether the tag end character is ">" (step S1308). For the tag end character,
It moves to step S1310. If it is not the tag end character,
The read character is added to the tag storage area in the work area and written, and the process returns to step S1307 (step S13).
09).

The character string in the tag storage area is collated with the tag table to check whether the character string starts with "/" (step S1310). When the character string starts with "/", it is checked whether the read tag is a </ HTML> tag (step S1311). In case of </ HTML> tag, all work areas are reset and step S13
Return to 01. If the tag is not the </ HTML> tag, processing corresponding to the lowest flag set in the flag storage area corresponding to the tag is performed, and the corresponding storage area in the work area is reset (step S1312). S
Return to 1304.

If the character string does not start with "/" in step S1310, it is checked whether the read tag is an <IMG> tag (step S1313). <I
In the case of the MG> tag, the image information file having the file name specified by the attribute value of the <IMG> tag is taken out from the buffer of the information acquisition unit 111 (step S131).
4). The extracted image information is converted into image information represented by bitmap data according to the GIF decompression method,
The procedure returns to step S1304 (step S1315).

When the read tag is not the <IMG> tag, the character string in the tag storage area is collated with the tag table,
A flag corresponding to the tag is set in the flag storage area, or a process corresponding to the tag is performed (step S13
16) and returns to step S1304. Note that various tags are used in the HTML document, and the processing corresponding to these tags can be processed in the same manner as an existing browser. Therefore, in the following, the data communication system 1
Only the processing for the </A> tag, which is related to the generation of link information generated in the 00-only format,
This will be described as an example of the process in step S1312.

FIG. 15 is a flowchart showing a partial specific example of the processing procedure in step S1312 of FIG. It is checked whether the tag is an <A> tag (step S140).
1). If it is not the <A> tag, the process moves to step S1408. In the case of the <A> tag, it is checked whether the linked file indicated by the attribute value is a voice information file (step S
1402). In the case of a voice information file, step S14
Move to 07.

If it is not a voice information file, the display area of the cursor graphic is opened and the display image information of the character string secured in the character string storage area is generated and added to the display image information storage area in the transmission data holding unit 113. (Step S140
3). XY coordinates indicating the display position of the cursor graphic are calculated (step S1404).

Hot spot information is generated from the calculated XY coordinates and the attribute value secured in the tag storage area, and is additionally stored in the link information storage area of the transmission data holding unit 113 (step S1405). The link flag in the work area is reset, and the character strings in the tag storage area and the character string storage area are erased (step S1406).

The voice information file is taken out, the voice information in the file is converted into a predetermined fixed format and stored in the voice information storage area (step S1407). The processing corresponding to the read tag is performed (step S140).
8). (Description of Configuration of Data Receiving Device 150) Hereinafter, each configuration of the data receiving device 150 will be described with reference to FIGS. 16 to 20. (Structure of Reception Separation Unit 151) The reception separation unit 151 includes a read buffer 161 for reading the identification number attached to the transmission data. Read buffer 161
Is the display image information for one file (including audio information)
And a storage area for temporarily holding link information for one file.

The receiving / separating unit 151 separates the display image information (including the audio information) and the link information from the received transmission data, and separates the display image information (including the audio information) for one file and the one file. Minute link information and the corresponding link information are stored in the corresponding storage areas in the read buffer 161. Regarding the display image information stored in the storage area, the identification number is read by character-recognizing the image written in a fixed position in the non-display area of the display image information. The link information stored in the storage area is read in the same manner as the identification number attached to a general digital data file is read. If the read identification number is the identification number designated by the control unit 155, the display image information (including audio information) or its link information held in the read buffer 161 is stored in the received data holding unit 152. Store in the corresponding storage area. At this time, regarding the voice information, the reception separation unit 151 stores the display image information and at the same time stores the voice information in the corresponding storage area in the reception data holding unit 152, and further, the same as the identification number instructed to the control unit 155. While the display image information of the identification number is continuously transmitted, the voice information is accumulated. This separates the audio information transmitted over a plurality of frames.

If the read identification number is not the identification number designated by the control unit 155, the read buffer 161
The new display image information (including the voice information) and the link information are discarded until the display image information (including the voice information) or the link information held in the And read buffer 161
, And the above process is repeated. (Reception data holding unit 152, reproduction unit 153, display unit 15
4 configuration) The reception data holding unit 152 includes the reception separation unit 15
Display image information separated by 1 (including audio information)
And the link information are stored in association with each other by the identification number.
The area for storing the display image information is realized by, for example, a RAM for storing a still image of one screen, a hard disk device, or the like.

The reproducing unit 153 reproduces the display image information stored in the received data holding unit 152 and the graphic information (described later) input from the control unit 155 according to the instruction of the control unit 155, and the display unit 154. Output to. Also, in synchronization with the reproduction of the display image information, the audio information stored together with the display image information is reproduced and output to the audio output unit 157.

The display unit 154 is realized by a TV monitor or the like which displays images in accordance with the NTSC system or the like, and the reproduction unit 1
According to the input from 53, the display image and the cursor graphic are displayed on the screen. (Structure of Control Unit 155) The control unit 155 first sets an initial value in a register that stores a variable value, and, for example, an identification number “0001” corresponding to the page indicated by the initial value.
The reception separation unit 151 is instructed to take in the display image information (including audio information) and the link information.

The control unit 155 has a reception data holding unit 152.
Each time new display image information (including voice information) is stored in the, the reproduction unit 153 is instructed to reproduce the display image information (including voice information), and new link information is stored in the received data holding unit 152. Each time it is executed, the link information is interpreted to create a cursor figure correspondence table in which each cursor display position is associated with a later-described cursor figure. The cursor graphic is represented by graphic information internally held by the control unit 155. Further, the control unit 155 reproduces the graphic information representing the cursor graphic and the display position thereof in the reproducing unit 153.
, And instruct to reproduce the graphic information.

FIG. 16 is an explanatory diagram showing an example of the cursor graphic correspondence table created by the control unit 155 to control the display position of the cursor graphic. The cursor figure correspondence table is
Each cursor display position indicated by the hotspot information of the link information held in the received data holding unit 152,
The correspondence with the cursor number of the cursor graphic to be displayed at the display position is shown. The control unit 155, for example, attaches cursor numbers to the cursor display positions in the link information in ascending order of Y coordinate, and then in ascending order of X coordinate,
The display position is written in the item corresponding to the cursor number in the cursor figure correspondence table.

FIG. 17 is an explanatory diagram showing an example of graphic information held by the control unit 155. As shown in FIG. 17, the control unit 155 holds graphic information representing the cursor graphic when the cursor is selected and the cursor graphic when the cursor is not selected in association with each cursor number. There is. Further, the control unit 155 includes the signal receiving unit 156.
In response to the interrupt from the, the type of the input signal held by the signal receiving unit 156 is interpreted, the graphic information of the corresponding cursor graphic is selected, and output to the reproducing unit 153. Next, the fetching of the transmission data of the reception separation unit 151 is controlled according to the cursor for which the selection is confirmed. (Display Control Processing of Received Data) In the following, linking with display image information (including voice information) having the same identification number, which is stored in the corresponding storage area in the received data holding section 152 by the reception separation section 151. The set of information is referred to as received data, and the display control processing of the received data by the control unit 155 will be described more specifically.

The control unit 155 sets the variable P-Index representing the identification number of the received data to be displayed to a predetermined value, for example "1". Next, the variable Cur-Pos representing the selected cursor number is set to a predetermined value, for example "1". Control unit 155
Instructs the reception separation unit 151 to capture the transmission data indicated by the variable P-Index. Further, the link information of the reception data that is fetched according to the instruction and stored in the reception data holding unit 152 is interpreted, and the variable Cur-Pos is changed.
The graphic information of each cursor in the selected state is output to the reproducing unit 153 together with the corresponding display position. Then, when an interrupt is generated from the signal receiving unit 156, the input signal held in the signal receiving unit 156 is interpreted. First, check whether the input is "up" and then "up"
If so, the value of the variable Cur-Pos is decreased by 1. Check whether the input is "bottom", and if it is "bottom", the variable Cur
-Increase the value of Pos by 1. Whether the input is "fixed" is checked, and if it is "fixed", the coordinates of the display position are obtained from the cursor number indicated by the variable Cur-Pos, and the link destination file described in the hotspot information is calculated from the coordinates. Get the identification number of. Furthermore, the identification number is set to the variable P.
It is set to the value of −Index, and the reception separation unit 151 is instructed to take in the transmission data indicated by the variable P-Index.
(Structures of Signal Receiving Unit 156 and Audio Output Unit 157) When the signal receiving unit 156 receives an input signal from an external remote controller or the like (not shown), the signal receiving unit 156 generates an interrupt to the control unit 155 by receiving the input signal, and receives the received input. Hold the signal.

The voice output unit 157 is realized by a speaker or the like, and outputs the reproduced voice information as voice. (Example of display image) FIG. 18 shows the transmission data 800 of FIG.
5 is an explanatory diagram showing a display image 1800 of an initial screen displayed on the display unit 154 based on FIG.

As shown in FIG. 18, the display image 1800 is displayed at the display position (100, 600) in the display image represented by the display image information 801 according to the hotspot information shown in the row 812 of the link information 803. , A cursor graphic 1801 corresponding to the cursor number “1” is displayed. It should be noted that graphic information indicating the selected state is selected as the cursor graphic 1801 based on the initial value of the variable Cur-Pos of the control unit 155.

Similarly, according to the hotspot information shown in the line 813 of the link information 803, the display position (100, 7
00), a cursor graphic 1802 corresponding to the cursor number “2” is displayed. In addition, cursor number "2"
Is not the initial value of the variable Cur-Pos, the graphic information indicating the non-selected state is selected as the cursor graphic 1802.

Since the transmission data 800 includes the display image information 801 and the voice information 802,
The display image 1800 is displayed on the display unit 154, and “voice commentary” by voice is output from the voice output unit 157. FIG. 19 shows a display image 190 of the initial screen displayed on the display unit 154 based on the transmission data 900 of FIG.
It is explanatory drawing which shows 0.

Similar to the display image 1800 shown in FIG. 18,
In the display image 1900, the display image information 901 is displayed in accordance with the hotspot information shown in the row 912 of the link information 902.
The display position (050, 40
0), the cursor graphic 1 corresponding to the cursor number "1"
901 is displayed. Further, as the cursor graphic 1901, graphic information indicating the selected state is selected.

FIG. 20 is an explanatory diagram showing a display image 2000 of the initial screen displayed on the display unit 154 based on the transmission data 1000 of FIG. Similarly, the display image 200
At 0, according to the hotspot information shown in the row 1012 of the link information 1002, at the display position (050, 400) in the display image represented by the display image information 1001,
A cursor graphic 2001 corresponding to the cursor number "1" and showing the selected state is displayed. (Specific Example of Processing of Control Unit 155) Hereinafter, a processing procedure of the control unit 155 when the display image 1800 is displayed on the display unit 154 based on the transmission data 800 will be specifically described.

The control section 155 first sets the variable P-Inde.
The initial value of x is set to "0001" and the initial value of the variable Cur-Pos is set to "1". Then, the variable P-Index
The reception / separation unit 151 is instructed to fetch the display image information 801 (including the voice information 802) and the link information 803 with the identification number “0001” represented by. The control unit 155 controls the display image information 8 stored in the received data holding unit 152.
01 (including audio information 802) is reproduced by the reproducing unit 153.
Instruct. The reproduction unit 153 reproduces the display image information 801 of the first page and outputs it to the display unit 154.
The audio information 802 is reproduced and output to the audio output unit 157. The control unit 155 interprets the link information 803 stored in the received data holding unit 152, creates a cursor graphic correspondence table, and outputs the graphic information of each cursor and its display position to the reproducing unit 153. At this time, the variable Cur-P
The cursor indicated by os, that is, the first cursor is changed to the selected image.

The control section 155 waits for an input from the signal receiving section 156. Signal receiving unit 156 from an external remote controller or the like
Then, it is assumed that the “down” signal is input. Input signal is "bottom"
If so, the control unit 155 sets the value of the variable Cur-Pos to 1
increase. That is, the value of the variable Cur-Pos is set to "2". Then, the graphic of the cursor number “2” indicated by the new variable Cur-Pos is set as the graphic information of the selected state,
Cursor number "1" indicated by original variable Cur-Pos
The respective figures are output as non-selected state graphic information to the reproducing unit 153.

The control unit 155 waits for an interrupt from the signal receiving unit 156, and waits for the signal receiving unit 156 after the interrupt occurs.
In addition, it is assumed that the input signal indicating "confirm" is held.
If the input signal is “determined”, the control unit 155 determines that the variable C
The XY coordinates (100, 700) associated with the cursor number “2” indicated by ur-Pos are read from the cursor graphic correspondence table. Then, the read XY coordinates (10
0,700), the identification number "0003" of the link destination file of the hotspot information in line 813 is read out, and the identification number "000" of the read link destination file is read out.
3 ”. The obtained identification number "0003" is used as the variable P-
Set as the value of Index. Then, the variable P-In
Display image information 100 having an identification number indicated by dex
1 for receiving the link information 1002 and the link information 1002
Instruct 1. The control unit 155 initializes the value of the variable Cur-Pos to “1”.

Thereafter, the display image 2000 shown in FIG. 20 can be displayed on the display unit 154 by performing the same processing as described above. Further, when the value of the variable Cur-Pos is “1”, an interrupt occurs, and when the control unit 155 refers to the signal receiving unit 156 by the interrupt, the signal receiving unit 156 holds the input signal indicating “confirmed”. If so, the control unit 155 can display the display image 1900 shown in FIG. 19 on the display unit 154 in the same manner as described above. (Procedure of Display Control Processing) FIG. 21 is a flowchart showing an example of the procedure of display control processing of the control unit 155.

The control unit 155 sets the variable P-Index indicating the identification number of the transmission data to be fetched to the initial value (step S2101). The control unit 155 sets the variable Cur-Pos indicating the cursor number in the selected state on the initial screen of each display image to the initial value (step S21).
02). The control unit 155 instructs the reception separation unit 151 to take in the transmission data having the identification number of the variable P-Index. The reception separation unit 151 separates the display image information and the link information from the received transmission data according to the instruction of the control unit 155, and associates the corresponding display image information and the link information with the identification number to store the reception data holding unit. 152
(Step S2103).

The reproducing section 153 reproduces the display image information in the received data holding section 152 according to the instruction of the control section 155 and outputs it to the display section 154. If there is audio information associated with the display image information, the audio information is reproduced and output to the audio output unit 157 (step S2104). The control unit 155 interprets the link information in the received data holding unit 152, outputs the graphic information representing the cursor graphic together with the XY coordinates indicating the display position to the reproducing unit 153, and instructs the reproduction of the graphic information. To do. The reproduction unit 153 is the control unit 1
The graphic information input from 55 is reproduced and displayed on the display unit 154.
(Step S2105). As a result, the display unit 154 displays a one-screen display image.

The control unit 155 waits for an interrupt from the signal receiving unit 156 (step S2106), and when the interrupt occurs, checks whether the input signal held in the signal receiving unit 156 is "up". (Step S210
7). If it is "up", "1" is subtracted from the value of the variable Cur-Pos (step S2108). If it is not "up", it is checked whether it is "down" (step S).
2109).

If it is "lower", "1" is added to the value of the variable Cur-Pos (step S2110). If it is not "lower", it is further checked whether it is "fixed" (step). S2111). If “determined”, according to the value of the variable Cur-Pos at that time, each value is in the order of cursor number → cursor display position (X, Y) of cursor graphic correspondence table → identification number of linked file in hotspot information. And the obtained identification number is used as the variable P-Index.
Set to the value of. After this, the process returns to step S2102.

If not "determined", step S2106
Return to. As described above, according to the present embodiment, the display image information that should be generated by interpreting the control information on the data receiving device 150 side should be generated on the data transmitting device 110 side in advance. Since the data is transmitted, the load on the data receiving device 150 can be reduced. Further, compared to the large number of types of display control processing of the display character string described in the control information and the large number of processing, the type of control processing based on the link information is limited, so it is comparatively possible. The number of processes is small. Therefore, the data receiving device 150
By using such link information, pseudo bidirectional communication with the data transmission device 110 can be easily performed.

Further, according to the present embodiment, when displaying the WWW home page on the Internet, the data communication system 100 uses the one-to-many TV broadcasting to perform the pseudo two-way communication. Compared with the case of using and displaying, it is not affected by the state of the transmission line,
A desired page can be promptly displayed on the display unit 154. Further, since the display image information previously expressed in the TV format is used, a full-color, high-resolution display image can be easily displayed on the display unit 154.
Further, when the display image generated by the browser is displayed on the TV, the configuration originally provided in the TV, such as the display image reproduction processing, has not been fully utilized, but in the present embodiment, the configuration originally provided in the TV is provided. The pseudo bidirectional communication can be performed by effectively using the provided memory and decoder.

In the present embodiment, as an example of the information to be acquired, the HTML document used in WWW and the compressed image information in the GIF format and the audio information in the AU format associated therewith are shown. It may be information described in other formats or languages. In this case, the processing relating to the <A> tag may be changed by a method corresponding to the format and the language. Further, in the present embodiment, an example of conversion of an HTML document including only limited tags is shown, but other tags may be included.

In this embodiment, the process of displaying another screen has been described as an example of the control of the pseudo bidirectional communication based on the link information. However, in addition to the pseudo bidirectional communication, the screen blinks. The processing may be described such as processing for causing or scrolling the screen, processing for starting and operating a device such as a FAX, a telephone, or a video connected to the data receiving device.

In the data communication system 100, the transmission data generating unit 112 describes the file in the link information by the identification number, but it does not always have to be described by the identification number. For example, the identification number of the file in the link information may be described in the original file name. In this case, at the time of transmission, display image information (including voice information) and link information of each transmission data are attached with an identification number and transmitted.
On the side of the data receiving device 150 which receives this, at the time of activation, one round of link information may be sequentially taken in advance and the correspondence between the file name and the identification number may be checked.

Further, the data receiving device 150 may store the display image information and the link information of all the loops repeatedly transmitted from the data transmitting device 110 in the received data holding section 152. Further, the transport stream shown in FIG.
When the data is transmitted from the PMT, the data receiving apparatus 150 first separates and acquires the PMT by the reception separating unit 151, reads the PID of the display image information to be captured from the PMT, and displays the display image from the transport stream using the PID as a filter condition. The information should be acquired separately. As for the link information, the PID of the private section carrying the link information is read from the PMT and the PID
Then, the link information may be separately acquired from the transport stream using the identification number (table ID extension) as a filter condition.

In the transport stream shown in FIG. 31, the video elementary stream is composed of I pictures, but it may be a video elementary stream containing P pictures and B pictures. Although the display image information is supposed to be encoded according to the MPEG2 standard, it is possible to use the MPEG1 format or JPE.
Other formats such as G format and GIF format may be used. further,
Although the display image information and the audio information are the video elementary stream and the audio elementary stream, they may be multiplexed in the private section format like the link information.

(Second Embodiment) FIG. 22 is a block diagram showing the structure of a data communication system 2200 according to a second embodiment of the present invention. In addition, in FIG.
The same components as those of the data communication system 100 shown in FIG. 1 are designated by the same reference numerals. Also, since these have already been described, description thereof will be omitted. Further, since the voice information may be processed in the same manner as the data communication system 100, the description thereof will be omitted below.

The data communication system 2200 includes a data transmission device 2210 and a data reception device 150.
The data transmission device 2210 includes a first acquisition unit 2211 and a second acquisition unit 2211 instead of the information acquisition unit 111 of the data transmission device 110.
An acquisition unit 2212 is provided, and a transmission data generation unit 2213 is provided instead of the transmission data generation unit 112.

The first acquisition unit 2211 is connected to the first external database 2221, and the information acquisition unit 11 of FIG.
It has the same configuration as that of 1. Further, similarly to the information acquisition unit 111, it acquires a file as shown in FIGS. 2 to 6 from the first external database 2221, assigns a file name and stores it in an internal buffer. First external database 2
221 is the same as the external database shown in FIG.

The second acquisition unit 2212 is connected to a second external database 2222 different from the first external database 2221, except that the files to be acquired are acquired one by one from the second external database 2222. It is similar to the information acquisition unit 111 and the first acquisition unit 2211. The second external database 2222 stores image information files created in advance in a fixed format and display size.

FIG. 23 shows image information 2301 acquired by the second acquisition section 2212 from the second external database 2222.
"CM0001. It is explanatory drawing which shows an example of BMP '.
As shown in FIG. 23, the image information 2301 is created with a fixed display size and represents a display image which is the advertisement content of the personal computer. The file name extension of the image information file ". "BMP" indicates that the image information 2301 is represented by bitmap data.

The transmission data generation unit 2213 includes a data conversion table storage unit (not shown) and a storage area (not shown) which is a work area for transmission data generation. The data conversion table storage unit is the data conversion table storage unit 1.
In addition to storing the same storage content as that of No. 22, the reduction ratio of the display image based on the display image information generated from the HTML document of the first acquisition unit 2211 is also stored. The work area includes a storage area similar to the work area of the transmission data generation unit 112, and further includes a first acquisition unit 221.
1 generated based on the HTML document acquired from 1.
A holding area for temporarily holding display image information for the screen is provided.

The transmission data generation unit 2213 generates first display image information and link information, which will be described later, from the HTML document acquired by the first acquisition unit 2211, and the first display image information and link information, which will be described later, from the image information acquired by the second acquisition unit 2212. 2 Display image information is generated. Specifically, the transmission data generation unit 2213 extracts the HTML document of one file from the buffer in the first acquisition unit 2211 and stores the extracted HTML document in the file storage area in the work area. Then, the contents of the HTML document are interpreted in the same manner as the transmission data generation unit 112,
In accordance with the interpretation result, the display character string is imaged or designated image information is expanded to generate display image information representing those display images. Further, the display image information of the portion generated by converting the display character string into an image or the display image information of the image generated by decompressing the designated image information is retained in the work area each time it is generated. Sequentially add to the area and store.

The transmission data generation unit 2213 interprets up to the end of the retrieved HTML document, and after generating the corresponding display image information and link information, displays the display image information stored in the holding area in the work area. The display image represented by is reduced at the ratio stored in the data conversion table storage unit, and the first display image information representing the reduced display image is generated. The generated first display image information is stored in the display image information storage area in the display image information storage unit 123.

The transmission data generation unit 2213 further recalculates the cursor display position of the hot spot in the reduced display image, and recalculates the XY coordinates of the hot spot information in the link information storage unit 125. Update to the value. Next, the image information of one file is extracted from the second acquisition unit 2212, the second display image information is generated from the extracted image information, and the generated second display image information is additionally stored in the display image information storage area. . It is assumed that the image information file stored in the second external database 2222 is created in a display size and format that can be used as it is as the second display image information.

In this way, the transmission data generator 221
3 is the first display image information and link information generated according to the HTML document of one file in the first acquisition unit 2211 and the second display image information generated from the image information of one file in the second acquisition unit 2212. From the above, when the transmission data for one file is generated, an identification number corresponding to the generated display image information and link information is added.

In the same manner, transmission data is generated one file at a time. FIG. 24 shows the transmission data generation unit 221.
3 is an explanatory diagram showing an example of transmission data generated by No. 3 of FIG. FIG. 24A is an explanatory diagram showing the content of the first display image information 2401 using the display image displayed based on the first display image information 2401. FIG. 24 (b) shows
It is explanatory drawing which shows the audio | voice information matched with the 1st display image information 2401. FIG. 24C shows link information 240.
It is explanatory drawing which shows the content of 3.

The transmission data 2400 includes the first acquisition section 221.
2, the HTML document 301 of FIG. 2 acquired from the voice information “Weather. au ”and the image information 401 of FIG. 3 and FIG. 2 acquired from the second acquisition unit 2212.
3 image information 2301 and the image information 2301. The display image represented by the first display image information 2401 is similar to the display image according to the image display image information 801 of FIG. 8 generated by the transmission data generation unit 112, which is reduced by a predetermined ratio. The display image represented by the second display image information 2402 is the same as that according to the image information 2301 acquired from the second acquisition unit 2212. The first display image information 2401 and the second display image information 2402 constitute the display image information for the transmission data 24001 file, and the display image of one screen showing the first page of the WWW home page is displayed.

The XY coordinates of the hotspot information shown in the row 2411 of the link information 2403 are obtained by updating the XY coordinates shown in the row 812 of the link information 803 according to the reduction ratio. The XY coordinates of the hotspot information shown in the row 2412 are the X-Y coordinates of the row 813 of the link information 803.
The Y coordinate is similarly updated. FIG. 25 corresponds to FIG.
6 is an explanatory diagram showing a display image of an initial screen displayed on a display unit 154 based on transmission data 2400 of No. 4 of FIG.

As shown in FIG. 25, in the display image 2500, the display image represented by the first display image information 2401 and the second display image information 2402 according to the hotspot information shown in the row 2411 of the link information 2403. At the middle display position (080, 480), a cursor graphic 2501 corresponding to the cursor number "1" is displayed. A cursor graphic 2501 shows the selected state of the cursor number “1”. Similarly, according to the hotspot information in the row 2412 of the link information 2403, the display position (080, 560)
The cursor graphic 25 corresponding to the cursor number "2"
02 is displayed. A cursor graphic 2502 shows a non-selected state.

FIG. 26 is a flow chart showing an example of the procedure of the transmission data generation processing of the transmission data generation unit 2213. The transmission data generation unit 2213 uses the first acquisition unit 221.
It is checked whether or not there is an unprocessed HTML document in 1 (step S2601). If so, one file is taken out (step S2602), display image information is generated in the holding area, and link information is generated in the link information storage unit 125, similarly to the transmission data generation unit 112 of the first embodiment. Yes (step S2603).

Firstly, the display image represented by the display image information generated in the holding area is reduced at a predetermined ratio.
The display image information is generated and stored in the display image information storage unit 123 (step S2604). Calculate the cursor display position (X, Y) in the display image based on the first display image information,
The cursor display position (X, Y) of the hot spot information is updated according to the calculation result (step S2605).

The image information file is retrieved from the second acquisition section 2212 (step S2606), the second display image information is generated (step S2607), and is additionally stored in the display image information storage area of the display image information storage section 123. . The display image information and the link information stored in the display image information storage unit 123 and the link information storage unit 125 are respectively given identification numbers (step S2608), and the process returns to step S2601.

As described above, according to the data communication system 2200 of this embodiment, the different external database 2
Even when the display image of the display unit 154 is synthesized according to a plurality of pieces of information supplied from 221 and the external database 2222, the same effect as that of the data communication system 100 in the first embodiment can be obtained. In addition, in this Embodiment, although the data transmission apparatus 2210 provided with the two information acquisition parts of the 1st acquisition part 2211 and the 2nd acquisition part 2212 was shown, the number of information acquisition parts is not limited to two, but three. You may have the above-mentioned information acquisition part.

Further, in the present embodiment, the second external database 2222 stores image information in which a display image of a predetermined display size is represented by bitmap data, but the second external database 2222 stores it. The displayed image information does not necessarily have to be represented by bitmap data, and may be compression-encoded according to the GIF format or another format. In this case, the transmission data generation unit 2213 expands and decodes the image information extracted from the second acquisition unit 2212 according to the format, and generates the second display image information. Further, the second external database 2222 may be a WWW server different from the first external database 2221. In this case, the transmission data generation unit 2213
The second display image information and the link information corresponding to the second display image information are generated by the same process as the generation of the first display image information and the corresponding link information.

(Third Embodiment) FIG. 27 is a block diagram showing the structure of a data communication system 2700 according to a third embodiment of the present invention. Note that in FIG. 27,
The same components as those of the data communication system 100 shown in FIG. 1 are designated by the same reference numerals. Also, since these have already been described, description thereof will be omitted.

The data communication system 2700 includes a first data transmitting device 2710, a second data transmitting device 2720 and a data receiving device 2750. Data receiving device 2
750 includes a reception separation unit 2751, a reception unit 2752, and a combining unit 2753 instead of the reception separation unit 151 of the data receiving device 150. (First Data Transmission Device 2710) First Data Transmission Device 2
The 710 has the same configuration as the data transmission device 2210, except that the second acquisition unit 2212 is not provided. Also, it is connected to an external database similar to the first external database 2221.

A transmission data generation unit (not shown) inside the first data transmission device 2710 generates the first display image information and the link information in the same manner as the transmission data generation unit 2213. The difference from the transmission data generation unit 2213 is that, when the transmission data generation unit of the first data transmission device 2710 generates the first display image information, the area of the display image by the second display image information is blanked and the first display image information is displayed. It is to generate display image information including image information and the blank area.

FIG. 28 shows the HTML document 301 shown in FIG. 3 and voice information “Weather. au ”and the image information 401 in FIG. 4 and is an explanatory diagram showing transmission data 2800 generated by the first data transmission device 2710.
FIG. 28A shows the first display image information 280 using the display image displayed based on the first display image information 2801.
It is explanatory drawing showing the content of 1. FIG. 28B shows audio information associated with the first display image information 2801.
FIG. 28C is an explanatory diagram showing the content of the link information 2803.

As shown in FIG. 28, the first display image information 2
241, audio information and link information 2803 are shown in FIG.
The first display image information 2401, the voice information, and the link information 2403 shown in FIG. Transmission data 2
The difference between 800 and the transmission data 2400 is that the display area according to the second display image information 2402 is a blank area 2802.
It is said that. (Second Data Transmission Device 2720) Second Data Transmission Device 2
Reference numeral 720 internally includes a transmission data holding unit (not shown) and a timer (not shown) that measures a fixed time, and stores the transmission data generated in advance in a fixed format and stored in the transmission data holding unit as a plurality of files. The files are switched one by one in the order of storage and transmitted at regular intervals measured by the timer.

The method of transmitting the transmission data by the second data transmitting device 2720 is the same as the conventional TV broadcasting. In addition, the second data transmission device 2720 is a DVD (D
an digital versatile disc (CD) player, a CD (compact disc) player, etc.
It may be a recording medium reproducing device connected to the data receiving device 2750.

FIG. 29 is an explanatory diagram showing transmission data 2900 transmitted from the second data transmission device 2720.
As shown in FIG. 29, in the transmission data 2900, the display area based on the first display image information is set to a blank area 2901 of a certain size, and a display image based on the second display image information 2902 is displayed in advance below the blank area 2901. Has been created. (Data Receiving Device 2750) The receiving / separating unit 2751 is the same as the receiving / separating unit 151 shown in FIG. 1 except that the display image information and the link information held in the reading buffer are output to the synthesizing unit 2753.

The receiving unit 2752 is realized by a conventional TV tuner or the like having an analog / digital converting circuit, receives the second display image information transmitted from the second data transmitting device 2720, and receives the second display image information. The image information is output to the combining unit 2753. The synthesizing unit 2753 divides the display image information storage area for one screen provided in the received data holding unit 152 into an area for the first display image information and an area for the second display image information, and manages them. Synthesizer 2753
Writes the first display image information of the transmission data input from the reception separation unit 2751 in the area for the first display image information, and the second display image information input from the reception unit 2752 to the second display image information. Write in the area for. As a result, the display image 2500 shown in FIG. 25 is displayed on the display unit 154. In the present embodiment, the display content of the second display image of the display image 2500 is sequentially changed at the same time interval as the transmission data switching interval of the second data transmission device 2720.

As described above, according to the present embodiment, the display image represented by each display image information is displayed on one screen based on the transmission data transmitted from the plurality of data transmitting devices. Even in the case, the same effect as that of the data communication system 100 can be obtained. In addition,
In this embodiment, the reception separation unit 2751 and the reception unit 275 are included.
Although the data receiving device 2750 including the two receiving units 2 and 3 is illustrated, the data receiving device 2750 may include three or more receiving units.

Further, in the present embodiment, the second data transmitting device 2720 transmits the transmission data consisting of only the second display image information without multiplexing, but the first data transmitting device 2
Similarly to 710, transmission data including the second display image information and its link information may be multiplexed and transmitted. In this case, the reception unit 2752 is the reception separation unit 2751.
The synthesizing unit 2753 synthesizes the display image information in the received data holding unit 152 from the first display image information and the second display image information as described above.
The link information is added to the link information in the transmission data captured by the reception separation unit 2751, and the link information in the transmission data captured by the reception unit 2752 is stored in the reception data holding unit 152.

In the first to third embodiments described above, the data receiving device 150 holds the graphic information representing the cursor graphic inside the control unit 155 in advance, but the graphic information transmitted from the data transmitting device 110. May be stored inside the control unit 155. In this case, the data transmitting device and the data receiving device may be configured as shown in FIG. In the figure, an auxiliary figure adding unit 3211 is added to the data communication system 100 shown in FIG. 1, and an auxiliary figure acquiring unit 3253 is further added to the data receiving apparatus 150.
Has been added. The external database further stores graphic information indicating the cursor shape.

The auxiliary figure adding section 3211 reads out the figure information stored in the external database, and additionally stores the read out figure information in the link information stored in the transmission data holding section 113. Auxiliary figure acquisition unit 3253
Extracts only the graphic information from the link information stored in the received data holding unit 152 and stores it in the graphic information storage unit provided in the control unit 155. Next, only the graphic information is deleted from the link information stored in the received data holding unit 152. According to this configuration, the data transmission device 1
10 transmits the graphic information extracted from the external database to the data receiving device 150, and the data receiving device 3250
The auxiliary figure stored in can be changed to various types.

[0150]

The transmitting apparatus of the present invention is a transmitting apparatus in a communication system for realizing interactivity by using broadcast waves, and is a first storing means for storing a plurality of image data corresponding to one frame; A second storage unit that stores control information indicating a link to another image data for each image data of the storage unit, and a transmission unit that repeatedly transmits a predetermined number of image data together with the control information. According to this configuration,
The image data and the control information corresponding thereto are repeatedly transmitted, and the receiving device can reliably receive the image data of the link destination indicated in the control information in the next iterative transmission. You can interactively follow from one to the next. As a result, it is possible for the user to realize the interactivity as if bidirectional communication is being performed, by using the broadcast wave that allows only one-way communication.

Further, in the case of a general two-way communication server, the load greatly varies depending on the request amount from the receiving device, so that the response time from the user operation to the switching of the display image varies greatly. To do. On the contrary,
Since the load does not fluctuate in this transmission device, the cycle of repeated transmission can be kept constant. Therefore, the receiving device can switch the image data within a fixed response time, that is, within one cycle of repeated transmission at the longest.

Here, the transmitting means repeatedly reads out a predetermined number of image data and corresponding control information from the first and second storage means, and the image data and control information read out by the reading means. From the multiplexing means for multiplexing the image data and the control signal by placing them on the video section and the blanking section of the television signal, respectively, and the sending means for sending the multiplexed television signal as an analog broadcast wave. You may comprise. With this configuration, the analog broadcast wave can be used to realize the above-described interactivity.

The image data and control information in the first and second storage means are digitized, and the transmitting means stores a predetermined number of image data and control information corresponding thereto in the first and second control means. A reading means for repeatedly reading from the storage means, a multiplexing means for converting the image data and the control information read out by the reading means into digital data streams, respectively, and generating a multiplexed stream, and the multiplexed stream for digital broadcasting. It may be composed of a transmitting means for transmitting as a wave. According to this configuration, the digital broadcast wave can be used to realize the above-mentioned interactivity.

Here, each of the first and second storage means stores image data and control information together with an identifier, and the transmitter further stores a plurality of audio data to which the same identifier as the image data is added. A third storage unit may be provided, and the transmission unit may transmit the audio data together with the image data. With this configuration, a set of image data and audio data can be transmitted, and more attractive interactivity can be realized.

Here, the transmission device further obtains a plurality of page information representing a page in which characters and images are arranged, including link information indicating a link to another page, character information, and image information. First acquiring image data corresponding to one frame in which characters and images are arranged according to the acquisition means and the character information and the image information in the acquired link information.
It may be configured to include a creating unit and a second creating unit that interprets the link information in the acquired page information and creates control information indicating a link to another image data for each image data. With this configuration, page information acquired from the outside can be converted into image data and control information in a format suitable for broadcasting.

The acquisition means may acquire the page information from the World Wide Web on the Internet. According to this configuration, the transmitting device converts an HTML document or the like of a WWW server on the Internet into image data and control information and broadcasts it. Therefore, it is possible to provide a user with an interactive program as if he were surfing the Internet using the TV broadcast wave.

Further, the receiving device of the present invention is a receiving device in a communication system for realizing interactivity by using broadcast waves, wherein the broadcast waves are different image data and other image data for each image data. Control information indicating a link to the multiplex and repeatedly transmitted, the receiving device separates one image data from the broadcast wave and the corresponding control information, and the separated image. Holding means for holding data and control information, reproducing means for reproducing the held image data and outputting a video signal, operating means for accepting a user operation for instructing switching of image data, and holding means according to the user operation. And control means for controlling the separation means so as to separate the other image data indicated by the control information. According to this configuration, the receiving device receives the broadcast wave from the transmitting device, separates one image data, reproduces it, and outputs a video signal according to the user's operation, so that the interactivity can be realized. In addition, the receiving device can reliably receive the image data of the link destination indicated by the control information in the next repeated transmission, so that the image data of the link destination desired by the user can be interactively traced from one to the next. I can go. As a result, it is possible for the user to realize the interactivity as if bidirectional communication is being performed, by using the broadcast wave that allows only one-way communication. Further, in the case of a general two-way communication server, the load greatly changes according to the request amount from the receiving device, and therefore the response time from the user's operation to the switching of the display image greatly changes. On the other hand, the present transmission device can keep the cycle of repeated transmission constant because the load does not change. Therefore, the receiving device can switch the image data within a fixed response time, that is, within one cycle of repeated transmission at the longest.

Here, the separating means discriminates the first discrimination means for discriminating the identifier given to the image data in the broadcast wave and the second discrimination means for discriminating the identifier given to the control information in the broadcast wave. And holding means for fetching the image data and the control information when the discrimination results of the first and second discriminating means are specific identifiers.
The image data and the control information captured by the capturing means may be held. According to this configuration, the separation unit can separate the image data desired by the user and the control information corresponding thereto by determining the identifier in the broadcast wave.

The image data and the control information are transmitted as analog broadcast waves multiplexed in the video section and the blanking section of the television signal, respectively, and are displayed as an image at a fixed position in the non-display portion in the video section. The transmitted identifier is transmitted, and the first determining unit may be configured to recognize the identifier from the image of the fixed position of the non-display portion. The non-display part of the analog broadcast wave can be transmitted by effectively using the identifier.

Here, the same identifier is given to the image data and the corresponding control information, and the image data and the control information are converted into digital data streams, respectively, and then multiplexed into a multiplex stream. First identification information for identifying image data and second identification information for identifying control information are assigned to the converted digital stream that is broadcast as a wave, and the multiplexed stream includes the first identification information and the identifier of the image data. Correspondence with
A map table indicating the correspondence between the second identification information and the identifier of the control information and the digital data stream are multiplexed, and the holding means further holds the map table separated by the separation means, and the control means. Identifies the identifier of the image data of the link destination indicated by the control information, refers to the map table, converts the identifier into the first identification information and the second identification information, and causes the separating means to identify the first identification information and the second identification information. 2 identification information is designated, and the separation means determines a first identification information in the multiplex stream, a first determination means for determining the second identification information in the multiplex stream, a first determination means, When the first and second identification information discriminated by the second discriminating means match the designations of the control means, the image data and the control information may be taken in by taking-in means. According to this configuration, the transmitting device transmits the map table in addition to the image data and the control information by using the digital broadcast wave. Therefore, the receiving device can easily assign the identifier of the desired image data to each identification information. It is possible to convert, and each of the discriminating means discriminates the identification information, and the capturing means captures the desired image data.

Further, the control information is represented by at least one set of a coordinate indicating a partial image area in the corresponding image data and an identifier of another image data to be a link destination, and the operation means. Accepts a user operation for designating the image area in the image data, and the control means
The identifier of the other image data as the link destination corresponding to the designated image area may be read from the holding means and designated to the separating means.

Here, the separating means further separates the sound data, and the holding means holds the separated sound data,
The reproducing means may reproduce the held audio data and output an audio signal. According to this configuration, a set of image data and audio data can be received and reproduced, and more attractive interactivity can be realized.

Further, the receiving method of the present invention comprises a separation step of separating one image data from the broadcast wave and control information corresponding thereto, and a storage step of storing the separated image data and control information in a memory. , A reproduction step of reproducing the image data stored in the memory and outputting a video signal, an operation step of accepting a user operation for instructing switching of the image data, and other information indicated in the control information stored in the memory according to the user operation. Discriminating step for discriminating the image data, and a re-separation step for discriminating the discriminated image data and the control information corresponding thereto.
This configuration also has the same effect as the above receiving device.

The receiving program storage medium of the present invention stores the receiving program including the above steps. When the receiving program stored in this storage medium is executed by the microcomputer in the broadcast wave receiving apparatus, the same effect as the above receiving apparatus can be obtained. Further, since the communication system of the present invention is configured to include the transmitting device and the receiving device, the same effect as the above can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a data communication system 100 according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an example of an acquisition list 200 stored in an acquisition list storage unit 121.

FIG. 3 is an HTML document 301 “Report. It is explanatory drawing which shows "html."

FIG. 4 is image information 401 “Weather. Image” that is an example of an image displayed on the first page of the WWW home page. g
It is an explanatory view showing "if".

FIG. 5 is an HTML document 501 “Tokyo.com” describing an example of the second page of the WWW home page. html ”
FIG.

FIG. 6 is an HTML document 601 “Osaka. html ”
FIG.

7 is an explanatory diagram showing an example of a link information table 700 stored in a data conversion table storage unit 122. FIG.

FIG. 8: HTML document 301 and voice information “Weathe”
r. au ”and the image information 401 are explanatory diagrams showing the transmission data 800 of the first page of the WWW home page.

9 is an explanatory diagram showing transmission data 900 of the second page of the WWW home page generated from the HTML document 501. FIG.

10 is an explanatory diagram showing transmission data 1000 of a third page of the WWW home page generated from the HTML document 601. FIG.

FIG. 11 is an explanatory diagram showing a method of transmitting transmission data by a transmission unit 116.

FIG. 12 is a flowchart showing a schematic processing procedure of the entire data transmission device 110.

FIG. 13 is a flowchart illustrating an example of a procedure of information acquisition processing by the information acquisition unit 111.

FIG. 14 is a flowchart illustrating an example of a procedure of transmission data generation processing by the transmission data generation unit 112.

FIG. 15 is a flowchart showing a partial specific example of the processing procedure in step S1312 of FIG.

FIG. 16 is an explanatory diagram showing an example of a cursor graphic correspondence table created by the control unit 155 to control the display position of the cursor graphic.

FIG. 17 is an explanatory diagram showing an example of graphic information held by a control unit 155.

FIG. 18 shows the display unit 1 based on the transmission data 800 of FIG.
It is explanatory drawing which shows the display image 1800 of the initial screen displayed on 54.

FIG. 19 shows the display unit 1 based on the transmission data 900 of FIG.
FIG. 14 is an explanatory diagram showing a display image 1900 of the initial screen displayed on 54.

20 is an explanatory diagram showing a display image 2000 of an initial screen displayed on the display unit 154 based on the transmission data 1000 of FIG.

FIG. 21 is a flowchart showing an example of a procedure of display control processing of the control unit 155.

FIG. 22 is a block diagram showing a configuration of a data communication system 2200 according to the second embodiment of this invention.

FIG. 23 is image information 2301 “CM000 acquired by the second acquisition unit 2212 from the second external database 2222”.
1. It is explanatory drawing which shows an example of BMP '.

FIG. 24 is an explanatory diagram showing an example of transmission data generated by a transmission data generation unit 2213.

25 is an explanatory diagram showing a display image of an initial screen displayed on the display unit 154 based on the transmission data 2400 of FIG.

FIG. 26 is a flowchart showing an example of a procedure of transmission data generation processing of the transmission data generation unit 2213.

FIG. 27 is a block diagram showing a configuration of a data communication system 2700 which is a third embodiment of the present invention.

28 is an HTML document 301 shown in FIGS. 2 and 3. FIG.
5 is an explanatory diagram showing transmission data 2800 generated by the first data transmission device 2710 from the image information 401 and the image information 401. FIG.

FIG. 29 is an explanatory diagram showing transmission data 2900 transmitted from the second data transmission device 2720.

FIG. 30 is a diagram illustrating another configuration example of the data communication system.

FIG. 31 is an explanatory diagram of a multiplexed stream transmitted when satellite digital broadcasting is used.

[Explanation of symbols]

100 data communication system 110 Data transmission device 111 Information acquisition unit 112 Transmission data generator 113 Transmission data holding unit 114 transmission data reading unit 115 Multiplexing unit 116 transmitter 121 Acquisition List Storage Unit 122 Data conversion table storage unit 123 display image information storage unit 124 voice information storage unit 125 link information storage unit 150 data receiver 151 reception separation unit 152 Received data holding unit 153 Playback section 154 display 155 Control unit 156 signal receiver 157 Audio output section

Continued front page    (72) Inventor Hidekazu Tanikawa             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yoshiyuki Miyabe             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor, Koichi Miki             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Takashi Sakao             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5C025 BA14 BA25 BA27 CA02 CA09                       CB10 DA01 DA05 DA10                 5C063 AB01 AB03 AB07 AC01 CA23                       DA03 DA07 DA13 DB01 DB10

Claims (19)

[Claims] 1. An acquisition unit that represents a page on which characters and images are arranged, links to other pages, a plurality of page information including character information and image information, and a plurality of acquired page information. From the above, the receiving device includes a generation unit that generates a plurality of transmission data files that are units separated from broadcast waves according to user selection, and a transmission unit that repeatedly transmits the generated plurality of transmission data files, The transmission data file is a transmission device including link information indicating a link to another transmission data file. 2. The transmission device according to claim 1, wherein the acquisition unit acquires the page information from the World Wide Web on the Internet. 3. The method according to claim 1, wherein the generation unit gives an identifier to each transmission data file, and the link information included in each transmission data file includes an identifier of a transmission data file of a link destination. Transmitter. 4. The first generating means for generating a transmission data file in which characters and images are arranged according to the character information and the image information in the acquired link information, and the generating means, in the acquired page information. A second creating means for interpreting the link information of the above and creating link information indicating a link to another sending data file in the sending data file, and a sending data file created by the first and second creating means. 4. The transmission device according to claim 3, further comprising a storage unit that stores the number. 5. Link information indicating a page on which characters and images are arranged and showing links to other pages, and character information,
An acquisition unit for acquiring a plurality of page information including image information, and a transmission data file that is a unit separated from a broadcast wave in which characters and images are arranged according to the character information and the image information in the acquired link information. A first creating means for creating the link information, a second creating means for interpreting the link information in the acquired page information, and creating link information indicating a link to another send data file in the send data file; 1. A transmission device comprising: a storage unit that stores a predetermined number of transmission data files created by the first and second creation units; and a transmission unit that repeatedly transmits a predetermined number of transmission data files. 6. The transmission device according to claim 5, wherein the acquisition unit acquires the page information from the World Wide Web on the Internet. 7. The first creating means gives an identifier to the transmission data file, the storage means stores the transmission data file together with the identifier, and the link information is represented by the identifier of the transmission data file of the link destination. The transmission device according to claim 5 or claim 6. 8. The transmitting means repeatedly reads all the transmission data files to which the identifiers are added from the storage means, and the transmission data files read by the reading means, respectively, in the video section of the television signal and the return signal. 8. The transmitter according to claim 7, further comprising: a multiplexing unit that multiplexes the transmission data file and the control signal by placing them on a line section, and a transmitting unit that transmits the multiplexed television signal as an analog broadcast wave. 9. The transmission device according to claim 8, wherein the multiplexing means puts an identifier represented as an image at a fixed position of a non-display portion in the video section. 10. The transmission means includes a reading means for repeatedly reading all of the transmission data files from the storage means, a transmission data file read by the reading means into a digital data stream, and a multiplexed stream obtained by multiplexing them. 8. The transmitting apparatus according to claim 7, further comprising: a multiplexing unit that generates the signal and a transmitting unit that transmits the multiplexed stream as a digital broadcast wave. 11. An image storing means for storing an image, and an image extracting means for extracting an image from the image storing means,
In the transmission data file created by the first creating means,
6. The transmission device according to claim 1, further comprising an image addition unit that adds the extracted image, wherein the transmission unit transmits the transmission data file to which the image is added. 12. A broadcast wave is a transmission data file which is a unit of separation, and a plurality of transmission data files including link information indicating links to other transmission data files are repeatedly transmitted, and Separating means for separating the transmission data file, holding means for holding the separated transmission data file, reproducing means for reproducing the held transmission data file and outputting a video signal, and reproduction output A receiving device comprising: a control unit that receives an instruction to switch to a transmission data file of a link destination indicated by link information in a data file and controls a separation unit to separate the transmission data file of the link destination. 13. An identifier is given to the transmission data file, the link information is represented by an identifier of a transmission data file of a link destination, and the separating means is given to the transmission data file in the broadcast wave. A discriminating unit that discriminates an existing identifier, a capturing unit that captures the transmission data file when the determination result of the determining unit is a specific identifier, and the retaining unit retains the transmission data file captured by the capturing unit. The receiving device according to claim 12. 14. The transmission data file is transmitted as an analog broadcast wave multiplexed in a video section and a blanking section of a television signal, respectively, and is displayed as an image at a fixed position in a non-display portion in the video section. The receiving device according to claim 13, wherein an identifier is transmitted, and the determining unit recognizes the identifier from the image of the non-display portion at the fixed position. 15. A page in which characters and images are arranged,
A step of acquiring a plurality of page information including links to other pages, character information, and image information, and a plurality of acquired page information are separated from broadcast waves according to user selection in the receiving device. It has a generation step of generating a plurality of transmission data files as a unit, and a transmission step of repeatedly transmitting the generated transmission data files, and the transmission data file indicates a link to another transmission data file. Transmission method including link information. 16. A transmission data file serving as a unit of separation, wherein a plurality of transmission data files including link information indicating a link to another transmission data file are repeatedly transmitted, and one transmission signal from the broadcast wave. A separation step of separating the data file, a storage step of storing the separated transmission data file in the memory, a reproduction step of reproducing the held transmission data file and outputting a video signal, and a transmission data being reproduced and output. A receiving step of receiving an instruction to switch to the transmission data file of the link destination indicated by the link information in the file, and controlling the separating means to separate the transmission data file of the link destination. 17. A recording medium recording a transmission program in a transmission device in a communication system for realizing interactivity using broadcast waves, wherein the transmission program uses the transmission method according to claim 15 in a computer in the transmission device. A program recording medium in which a program to be executed is recorded. 18. A recording medium having a receiving program recorded in a receiving device in a communication system for realizing interactivity using broadcast waves, wherein the receiving program stores the receiving method according to claim 16 in a computer in the receiving device. A program recording medium in which a program to be executed is recorded. 19. The transmitter according to claim 1, and claim 12.
A broadcasting system comprising: the receiving device according to claim 5;
A broadcasting system comprising the transmitting device according to claim 12 and the receiving device according to claim 12.