JPH1146327A - Data broadcast receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable accessing the transmitter side for obtaining a file that is transferred in the data broadcasting, even when the file could not be received by acquiring the names corresponding to the numeric value set as the broadcast station identification (ST) of the transmitter side, the broadcast enterpriser (PV) and the service number (SV) respectively, based on a definition file. SOLUTION: A TCD signal extraction part 7 extracts the TCD signals, which are transmitted with the data signals from data broadcasting VBI signals extracted at a data broadcasting VBI signal extraction part 3. Then an ST/PV/ SV extraction part 8 extracts the numerical values which are set as the ST, PV and SV described to the TCD signals. A file transmitter side setting part 10 collates the set numerical values with a data broadcast service definition file, which is stored in a definition file store part 9 to check the names corresponding to the numerical values and to specify the position of an original file based on the broadcast station name, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data broadcast receiving apparatus for receiving a file transferred from a broadcast station in a data broadcast using a vertical blanking interval of a terrestrial broadcast.

[0002]

2. Description of the Related Art Conventionally, in data broadcasting, data is transferred from a broadcasting station as a file, and the receiving side stores the data for each file and displays it on a browser screen for processing. When the data is transferred from the broadcast station side, the transfer may fail for some reason such as a data signal failure, and the receiving side may not be able to receive a part of the data. In this case, since the data cannot be displayed on the browser screen, the data is transferred again from the broadcasting station and displayed again, or after the browser confirms that the data has not arrived many times. Displayed as an error.
Or, among the transferred files, specify a file that has not arrived at the receiving side and specify "There is a file that has not arrived." If the file name of the file is XX, "XX has not arrived. And others are displayed on the browser screen. This is because a list describing information about a file of data to be transferred from a broadcasting station is transferred as one file separately from the file together with the file of the data, and the file of the list and the received By comparing the data with the data file, the file name of the non-arrival file can be specified.

[0003]

However, when the user confirms which file has failed to be transferred, and determines from the file name of the file that the file is not necessary for the user, The file data obtained by ignoring the file can be used, but if the unarrived file is a necessary file, after all, there is no other way but to wait until it is retransmitted from the broadcasting station. On the other hand, the broadcast station cannot know that a part of the broadcast data file has failed to be transferred and has not arrived at the receiving side. May not be transferred again. Therefore, unless the file is notified to the broadcast station that the file has not arrived and a request is made to retransmit the file, the file cannot be obtained without fail. That is, the user needs to not only passively wait for the file transfer from the broadcasting station, but also access the transfer source file and actively obtain the file.

The present invention has been made in order to solve such a problem. Even if a file to be transferred in a data broadcast using a vertical blanking interval of a terrestrial broadcast cannot be received, the transfer source can be determined. It is an object of the present invention to provide a data broadcast receiving apparatus that can access and obtain the file.

[0005]

In order to solve the above-mentioned problems, a data broadcast receiving apparatus according to the present invention (claim 1) is capable of transmitting a VBI signal transmitted in a vertical blanking interval of a terrestrial broadcast radio wave. In accordance with the included data signal and the transmission control data signal, a plurality of data files each constituting a data program, a broadcast station identification (ST), a broadcaster (PV), and a service from which the data files have been transferred. A data broadcast receiving apparatus for receiving a data broadcast in which a numerical value set as a number (SV) is transmitted, comprising: a data signal extracting unit for extracting the data signal from the VBI signal; File storage means for storing the received data file;
Transmission control data signal extracting means for extracting the transmission control data signal from the VBI signal; ST / PV / SV extracting means for extracting numerical values set as ST, PV, and SV from the transmission control data signal; Multiple ST,
Definition file storage means for storing a definition file describing the names of ST, PV, and SV corresponding to the numerical values set as PV and SV, respectively, based on the definition file, as ST, PV, and SV. File transfer source setting means for acquiring the names of the ST, PV, and SV corresponding to the set numerical values; and file display instructing means for acquiring the data file by accessing the transfer source of the data file by external input. It is provided with.

Further, in the data broadcast receiving apparatus according to the present invention (claim 2), in the data broadcast receiving apparatus according to claim 1, the file storage means constitutes a data program transmitted by the data signal. One file described with respect to a plurality of data files to be stored is stored, and the number of the data files stored in the file storage unit is compared with the number of the plurality of data files described in the file. And a file accumulation ratio calculating means for calculating the file accumulation ratio by calculating the ratio of the received data files in the data files transferred from the server.

The data broadcast receiving apparatus according to the present invention (claim 3) is the data broadcast receiving apparatus according to claim 1 or 2, wherein the file display instruction means uses the Internet to transmit the data file. Access to the source of the transfer.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing an embodiment of the present invention, a data broadcast using a vertical blanking interval (VBI) of a terrestrial broadcast using a data broadcast receiving apparatus according to the present embodiment will be described. explain.

In the data broadcasting, data is transmitted by a data (HTML data, image, etc.) signal using a specific area of a VBI of the terrestrial television broadcasting, and a transmission control data (TCD) signal is transmitted together with the data signal. , And a time signal. The TCD signal includes a service number (SV) indicating a service broadcasting a data program, a broadcaster (PV) indicating a broadcaster providing the service, and a broadcast station serving as the broadcaster. Is described by a numerical value, and data for controlling the transmission of the data signal is described. The time signal describes an accurate time managed by the broadcasting station. The data transmitted as the data signal is managed as a plurality of files by the broadcasting station according to the content of the data. And
The data is packetized and transmitted, and after being received, the packet is returned and stored as a file. The VBI, TCD, ST, PV, and SV
Is defined by the ARIB standard, which is a standard of the radio wave industry.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Embodiment 1 FIG. FIG. 1 is a block diagram showing a configuration of a data broadcast receiving apparatus according to the first embodiment.
1 is a broadcast signal receiving unit for receiving terrestrial broadcast radio waves, 2 is a vertical blanking interval extracting unit for extracting a vertical blanking interval (VBI), and 3 is a data broadcasting for extracting a VBI on which a data signal is superimposed. VBI signal extraction unit 4 for data broadcasting V
A data signal extracting unit for extracting a data signal of the BI signal, a data file creating unit for managing a plurality of files in a broadcasting station, and returning a packetized and transmitted data to create a data file; 6 is a data file storage unit for storing the file created by the data file creation unit 5, 7 is a TCD signal extraction unit that extracts a TCD signal from a VBI signal for data broadcasting, 8 is ST, PV, and ST described in the TCD signal. “ST”, “PV”, and “SV” extraction units for extracting numerical values set as SVs;
A definition file storage unit that stores a definition file listing a numerical value set as V and SV and a name corresponding to the numerical value, and an extracted ST obtained by comparing with a data broadcasting service definition file. , PV, and SV, a file transfer source setting unit 11 for specifying a file transfer source from the names corresponding to the numerical values set therein, switches the display of the file displayed on the browser screen by an external input, A file display instructing unit 12 for accessing and acquiring a file, which corresponds to a browser screen,
Files stored in the data file storage unit 6, or
This is a file display unit that displays a file obtained from a file transfer source.

Next, the operation will be described. First, a data broadcast is received and a data file is stored in the same manner as a normal data broadcast. That is, the vertical blanking interval extraction unit 2 extracts a vertical blanking interval (VBI) from the terrestrial television broadcast radio wave received by the broadcast signal receiving unit 1,
The data broadcast VBI signal included therein is extracted by the data broadcast VBI signal extraction unit 3. The data broadcasting V
The BI signal includes a data signal, a TCD signal, a time signal, and the like. The data signal among them is extracted by the data signal extraction unit 4. The data signal is data that has been received as packetized transmission from a broadcasting station, and the data file creation unit 5 restores the received packet to create a data file. The data file is stored in the data file storage unit 6 as the same as a plurality of data files managed by the broadcasting station.

[0012] Then, the user operates the file display instructing unit 11.
To the data file storage unit 6
Is displayed on the file display unit 12 which is a browser screen. At this time, the data content may not be displayed on the screen.
For example, the case where the radio wave condition at the time of file transfer from the broadcasting station is bad is cited. In this case, the source file in which the data file has been stored, which is located in the broadcasting station to which the data file has been transferred, is specified, accessed via a telephone line or the like, and the data file is acquired. Specifically, the TCD signal transmitted together with the data signal is extracted by the TCD signal extraction unit 7 from the data broadcast VBI signal extracted by the data broadcast VBI signal extraction unit 3, and the TCD signal is extracted.
Numerical values set as ST, PV, and SV described in the CD signal are extracted by an “ST”, “PV”, and “SV” extraction unit 8. As described above, the numerical values set as the ST, PV, and SV indicate the broadcasting station, the broadcasting company, and the service that transmitted the data signal, that is, the location of the original file. In the setting unit 10,
The numerical value is compared with the data broadcasting service definition file (see FIG. 2) stored in the definition file storage unit 9 to check the name corresponding to the numerical value. Identify by user name and service name. Then, by displaying the location of the specified original file on the file display instructing section 11, the file transfer source is accessed according to a user's instruction, and the file whose transfer failed is acquired. More specifically, the location of the original file specified by the file transfer source setting unit 10, that is, the name of the broadcasting station, the name of the broadcasting company, and the name of the service are displayed on the file display unit 12, and the user can display this. An input to the file display instructing unit 11 is made by clicking or the like using a mouse or the like, and by accessing the hard disk of the broadcast station that is the file transfer source,
Acquires the file that was not transferred and displays the file
2 is displayed. In this case, only the name of the file transfer source is displayed on the screen as the file display unit 12, but an address for accessing the Internet is set there, and the user inputs the address. The file transfer source can be accessed simply by clicking the name or the like without having to do so. Further, the file name of the file that has not been transferred can be specified only when the hard disk is accessed by comparing the file name described on the hard disk with the file name of the transferred file. The file with the specified file name will be obtained.

In the above description, the transfer source of the data file is accessed using the Internet. However, the means for accessing the transfer source is not limited to the Internet. In such a case, it goes without saying that the Internet address is replaced with the personal computer communication address. Here, the file display instruction unit 11
Corresponds to a browser of a personal computer, and a data file transferred from a broadcasting station is described in an HTML format, so that a general-purpose HTML browser can be used.

As described above, the data broadcast receiving apparatus according to the first embodiment includes a TCD signal extracting section 7 for extracting a TCD signal from a VBI signal, and a ST, P
"ST" for extracting numerical values set as V and SV
“PV” and “SV” extraction unit 8 and the ST, PV, and S
A file transfer source setting unit 10 for acquiring the names of ST, PV, and SV, which are the names of data file transfer sources, from a numerical value set as V, and a file display instructing unit 11 for accessing the data file transfer source. Therefore, even when the reception of the data file transmitted by the VBI of the terrestrial television broadcast fails, it is possible to access the transfer source of the data file and actively acquire the data file. In addition, since the file display instructing unit 11 accesses the transfer source of the data file using the Internet, it is possible to easily access the transfer source using a general-purpose HTML browser and acquire the data file.

In the data broadcast receiving apparatus according to the first embodiment, when data contents are not displayed on the screen,
Although it is assumed that there is a data file that failed to be transferred, one data program broadcasted from a broadcasting station is composed of a plurality of data files, and most of the data files are transferred and displayed. in case of,
It is difficult to recognize the existence of a data file that failed to transfer. Therefore, the data files transferred from the broadcasting station include, in addition to a plurality of data files constituting the data program, a data file describing the file names of the plurality of data files (hereinafter, referred to as a list file). Using the list file, the file names of the plurality of data files transferred and stored in the data file storage unit 6 and the contents of the list file are displayed on the file display unit 12 and compared. Thus, in addition to the existence of the file that has not been transferred, the file name of the file can be reliably specified.

Embodiment 2 FIG. 3 is a block diagram showing a configuration of the data broadcast receiving apparatus according to the second embodiment.
In the figure, the same reference numerals as those in FIG. 1 denote the same or corresponding parts. Reference numeral 13 denotes a file storage ratio calculation unit that calculates the ratio of files stored in the data file storage unit among the files transferred from the broadcasting station.

The operation will be described first. As in the first embodiment, a data broadcast is received and a data file is stored. That is, the vertical blanking section extraction unit 2
The vertical blanking interval (VBI) is extracted from the terrestrial television broadcast radio wave received by the broadcast signal receiving unit 1, and the data broadcast VBI signal included in the vertical blanking interval (VBI) is extracted therefrom.
The BI signal extraction unit 3 extracts the signal. The data broadcast VBI signal includes a data signal, a TCD signal, a time signal, and the like. The data signal among them is extracted by the data signal extraction unit 4. The data signal is transmitted and received as a packet from a broadcasting station,
To restore the packet and create a data file.
The data file is assumed to be the same as a plurality of data files managed by the broadcasting station,
Is accumulated in

Next, as described above, the data files transferred from the broadcasting station include, in addition to the plurality of data files constituting the data program, the file names, file capacities, file creation dates and the like of the plurality of data files. Is described, the file accumulation ratio calculation unit 13
Then, by dividing the number of the plurality of data files transferred and accumulated in the data file accumulation unit 6 by the number of files described in the list file,
The ratio (file storage ratio) of the files stored in the data file storage unit 6 among the files transferred from the broadcasting station is calculated. If the file storage rate is 100%, all the files transferred from the broadcasting station are stored in the data file storage unit 6, but if the file storage rate is less than 100%, for some reason. This indicates that there are files that could not be transferred and could not be stored. In the latter case, as in the first embodiment, the original file on which the data is broadcast is specified and accessed, and the data file is acquired. That is, the TCD signal transmitted together with the data signal is extracted by the TCD signal extractor 7 from the VBI signal for data broadcast extracted by the VBI signal extractor 3 for data broadcast, and described in the TCD signal. Numerical values set as ST, PV, and SV are extracted by the “ST”, “PV”, and “SV” extraction unit 8. The file transfer source setting unit 10 compares the above numerical value with the data broadcasting service definition file (see FIG. 2) stored in the definition file storing unit 9 to determine the location of the original file, the name of the broadcasting station, the broadcasting business. Identify by user name and service name. The specified broadcast station name, broadcaster name, and service name are displayed on the file display unit 12, and are input to the file display instruction unit 11 by the user clicking on the file display unit 12. By accessing the hard disk of the broadcasting station that is the file transfer source, the file not transferred is obtained. Note that the file accumulation rate can also be calculated from the file capacities described in the list file.

As described above, the data broadcast receiving apparatus according to the second embodiment uses the SCD from the received and extracted TCD signal.
“ST”, “PV”, and “SV” extraction unit 8 for extracting numerical values set as T, PV, and SV;
A file transfer source setting unit 10 for obtaining the names of ST, PV, and SV as data file transfer source names from numerical values set as V and SV, and a file display instruction unit 11 for accessing the file transfer source. And a file storage ratio calculation unit 13 for calculating the ratio of files stored in the data file storage unit 6 among the files transferred from the broadcasting station.
When the transfer of the data file fails in BI, even if the user does not recognize the existence of the untransferred file,
By automatically determining the existence of the data file, it is possible to access the transfer source of the data file and actively acquire the data file.

[0020]

As described above, according to the data broadcast receiving apparatus of the present invention (claim 1), the data signal included in the VBI signal transmitted in the vertical blanking interval of the terrestrial broadcast radio wave, And a transmission control data signal, a plurality of data files constituting each data program, a broadcast station identification (ST) of a transfer source to which the data files are transferred,
What is claimed is: 1. A data broadcast receiving apparatus for receiving a data broadcast in which a broadcaster (PV) and a numerical value set as a service number (SV) are transmitted, wherein said data signal extracting means extracts said data signal from said VBI signal. File storing means for storing the data file transmitted and received by the data signal; transmission control data signal extracting means for extracting the transmission control data signal from the VBI signal; , PV,
ST / PV / to extract numerical values set as SV and SV
SV extracting means, ST, PV, and SV respectively corresponding to a plurality of numerical values set as ST, PV, and SV
Definition file storing means for storing a definition file in which the names of the above ST and ST are stored based on the definition file.
The above S corresponding to the numerical values set as PV and SV
Since there are provided file transfer source setting means for acquiring the names of T, PV, and SV, and file display instructing means for acquiring the data file by accessing the transfer source of the data file by external input, terrestrial television Even if the data file transfer fails in the broadcast VBI,
There is an effect that the transfer source of the data file can be accessed and the data file can be actively acquired.

According to the data broadcast receiving apparatus of the present invention (claim 2), in the data broadcast receiving apparatus according to claim 1, the file storage means stores the data program transmitted by the data signal. Accumulates one file described with respect to the plurality of data files constituting the file, and compares the number of the data files stored in the file storage unit with the number of the plurality of data files described in the file. A file accumulation ratio calculating means for calculating a file accumulation ratio by calculating a ratio of a received data file among data files transferred from a transfer source, so that the data file is transferred by VBI of terrestrial television broadcasting. If the file fails, the existence of the untransferred file is automatically recognized even if the user does not recognize the existence. It is determined in actively embodiment offers the advantage of being able to acquire the data file by accessing the transfer source of the data file.

According to the data broadcast receiving apparatus of the present invention (claim 3), in the data broadcast receiving apparatus according to claim 1 or 2, the file display instruction means uses the Internet to execute the file display instruction means. Access to the transfer source of the data file, so general-purpose HTML
There is an effect that the transfer source can be easily accessed to obtain the data file by using the browser.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a data broadcast receiving device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of a data broadcasting service definition file used in the embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a data broadcast receiving device according to a second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 broadcast signal receiving unit 2 vertical blanking section extraction unit 3 VBI signal extraction unit for data broadcasting 4 data signal extraction unit 5 data file creation unit 6 data file storage unit 7 TCD signal extraction unit 8 “ST” “PV” “SV "Extraction unit 9 Definition file storage unit 10 File transfer source setting unit 11 File display instruction unit 12 File display unit 13 File accumulation ratio calculation unit

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code FI H04N 7/088 // G06F 13/00 351 (72) Inventor Nobuya Kusuhara 1006 Kazuma Kazuma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (3)

[Claims] 1. A plurality of data files each constituting a data program by a data signal and a transmission control data signal included in a VBI signal transmitted in a vertical blanking interval of a terrestrial broadcast wave, and the data file The broadcast station identification (ST) and broadcaster (P
V), and a data broadcast receiving apparatus for receiving a data broadcast in which a numerical value set as a service number (SV) is transmitted, comprising: a data signal extracting means for extracting the data signal from the VBI signal; File storage means for storing the data file transmitted and received by a signal; transmission control data signal extraction means for extracting the transmission control data signal from the VBI signal; and ST, PV, and ST from the transmission control data signal. SV
ST / PV / SV extracting means for extracting a numerical value set as "", and a definition file describing names of ST, PV, and SV corresponding to the numerical values set as a plurality of ST, PV, and SV, respectively. Definition file storage means, and based on the definition file, the ST, PV, and S
File transfer source setting means for obtaining the names of the ST, PV, and SV corresponding to the numerical value set as V; and a file display instruction for accessing the transfer source of the data file by external input to obtain the data file And a means for receiving data broadcast. 2. The data broadcast receiving device according to claim 1, wherein said file storage means stores one file describing a plurality of data files constituting a data program transmitted by said data signal, By comparing the number of the data files stored in the file storage means with the number of the plurality of data files described in the file, a ratio of the received data file among the data files transferred from the transfer source is compared. A data accumulation ratio calculating means for calculating a file accumulation ratio by calculating the file accumulation ratio. 3. The data broadcast receiving device according to claim 1, wherein the file display instruction means accesses a transfer source of the data file using the Internet. Broadcast receiver.