KR20120066210A - Method and apparatus for obtaining and storing text information from broadcast signals - Google Patents

Abstract

The present invention relates to the storage of information, for example, subtitles and teletext data, included in a received broadcast signal. According to an aspect of the present invention, there is provided a method of decoding a first video program from a tuned broadcast signal by tuning a broadcast signal, and extracting text display-oriented data such as subtitles or teletext data from the broadcast signal. Acquiring text data therefrom; recording the acquired text data in a first file including the title of the first video program in a file name; and synchronizing the broadcast signal according to time-lapse or channel switching. If a second video program different from the first video program is provided, close the first file, automatically generate a second file including the title of the second video program in the file name, and within the second file, currently tuned. Recording the text data obtained from the broadcast signal.

Description

Method and apparatus for obtaining and storing text information from broadcast signals {Method and apparatus for obtaining and storing text information from broadcast signals}

The present invention relates to a method and apparatus for acquiring text information from an image source such as a broadcast channel and storing the same in a storage medium.

Increasing broadcast services by terrestrial, cable, and satellite broadcasting have resulted in diversified broadcast channels, allowing viewers to enjoy rich video content, while the dispersal of viewers has put broadcasters in a more competitive state of video content. .

In order to attract more attention to the video contents of the viewers, the broadcaster not only enhances the contents of the video contents, but also provides additional information and professional information on various economic and living fields that may be of interest. For example, it provides a service for transmitting information on the economy, securities, leisure, sports, etc. in addition to the video content.

Such ancillary or professional information is usually provided in the form of text or at least in the form of text-oriented information. Since the text information is displayed on the screen and disappears, the viewer can check the text information for a short time, There is no way to see it again even if it is determined to be subtitle.

In the case of a broadcast service that mainly provides text information, for example, a tele-text service, the received text information is stored in the receiving device until the update information is received and can be viewed again. It is not easy to find a text page with the information required by the user on the screen, and there is an inconvenience that the text displayed on the screen is not recognized at a glance.

An object of the present invention is to provide a method and apparatus for extracting information directed to text display included in a broadcast signal and storing the information as a file of text information.

Another object of the present invention is to provide a method and an apparatus for storing stored text information so that the text information can be understood more quickly when viewed later.

Another object of the present invention is to provide a method and apparatus for generating and storing a text information file to facilitate retrieval of the stored text information file.

The object of the present invention is not limited to the explicit purpose described above, and of course includes achieving the effect that can be derived from the specific and exemplary description of the present invention.

According to an aspect of the present invention, there is provided a method of storing information included in a received broadcast signal, by tuning a broadcast signal and decoding and outputting a first video program from the tuned broadcast signal; Extracting text display oriented data and obtaining text data therefrom; recording the obtained text data in a first file including a title of the first video program in a file name; Accordingly, when a second video program different from the first video program is provided in the tuned broadcast signal, the first file is closed, and a second file including the title of the second video program in the file name is automatically generated. And recording the text data obtained from the currently tuned broadcast signal in the two files.

In an embodiment according to the present invention, the recording of the text data in the first file or the second file comprises: a video scene in the first video program or the second video program which is temporally associated with the text to be recorded. The reduced image is recorded together with the recorded text.

According to an embodiment of the present invention, the recording of the text data in the first file or the second file is performed only when the acquired text data includes at least one of preset search terms. Write in file or second file.

In one embodiment according to the present invention, the method further comprises: after closing the first file, checking whether the first file is valid and deleting the first file if it is determined to be invalid; It is checked whether the closed first file is valid based on at least one of the amount of text recorded in the first file, the size of the first file, and the continuous decoding output time for the first video program.

In one embodiment according to the invention, the first file and the second file are created on a removable storage medium which has been previously designated for file generation or on a fixed storage medium when the removable storage medium is not available.

According to another aspect of the present invention, there is provided a method for storing information included in a received broadcast signal, by tuning a broadcast signal and decoding and outputting a video program from the tuned broadcast signal, and text from the broadcast signal. Extracting display-oriented data and obtaining a plurality of pages of text data therefrom; and selecting at least one specific text page including at least one of preset search terms from the plurality of pages of the obtained text data. Recording in a file of < RTI ID = 0.0 >

In one embodiment according to the present invention, if the text page obtained by extracting from the broadcast signal has the same page number as any one of a plurality of previously obtained pages, a new file is created and the new file is created in the new file. And recording the text page.

In one embodiment according to the present invention, the file includes at least one of the above-mentioned search terms in the file name. The recording may include: a first file including the first search term in a file name when the specific text page includes both first and second search terms belonging to the set search terms, and the first file. (2) The specific text page is recorded in each of the second files including the search word in the file name.

In one embodiment according to the present invention, the method includes closing a file and creating a new file upon channel switching, and in the new file, a plurality of pages of text data obtained from a broadcast signal tuned in the switched channel. Recording, and checking whether the closed file is valid and deleting the closed file if it is determined to be invalid. Then, it is checked whether the closed file is valid based on at least one of the amount of text recorded in the closed file, the size of the closed file, and the continuous decoding output time for the video program in the channel before the channel switching.

In one embodiment according to the invention, the at least one file is created on a removable storage medium which has been previously designated for file creation or on a fixed storage medium when the removable storage medium is not available.

According to still another aspect of the present invention, an apparatus for receiving and outputting a broadcast signal as a video signal includes a receiver for tuning and outputting a broadcast signal, and an image program and a first type from a broadcast signal tuned and output by the receiver. Or exchanging data by providing an interface according to a connection specification with a decoder for decoding and outputting a second type of text-oriented data, a first storage medium for storing data, and a second storage medium that is selectively connected. And a first medium connected with the first storage medium or the medium connection unit, when the first type of text display-oriented data is decoded and outputted from the decoder. And generating text data extracted from the text display-oriented data of the first type. And a control unit configured to record in the generated file.

In the above apparatus, when the second type of text display oriented data is decoded and output from the decoder, the controller acquires a plurality of pages of text data from the second type of text display oriented data and obtains the same. At least one of a plurality of pages of the text data, the specific text page containing at least one of the predetermined search terms, is selected and generated in the second storage medium connected to the first storage medium or the medium access unit. It is configured to write in the file of.

In one embodiment according to the present invention, when a broadcast signal tuned by the receiving unit is switched to another video program in accordance with time passage or channel switching, the control unit includes a file having the title of the video program before the switching as a file name. The first type which automatically generates a file in which the title of the converted program is included in a file name on the connected removable storage medium or the fixed storage medium and is decoded together with the converted video program in the generated file. It is also configured to record the text data extracted from the textual display oriented data of.

In one embodiment according to the present invention, the first type of text display oriented data is subtitle data and the second type of text display oriented data is teletext data.

At least one embodiment of the present invention described above and the present invention described in detail below includes storing other text display-oriented data such as subtitles or teletexts provided with the video signal as separate files. For example, a computer may run an application corresponding to the file format to browse or print a text file in the storage medium. This allows the user to view more freely through the keyboard or mouse or more conveniently through the ground.

In particular, if a broadcast program provides its subtitles in a foreign language, it can be reviewed again and again, thereby improving learning efficiency, and recognizing scene images in the subtitles as well. Even more effective.

FIG. 1 illustrates a configuration of a digital broadcast receiver in which a method of extracting text display orientation information from a broadcast signal and storing the text display orientation information according to an embodiment of the present invention is implemented.
2 is an example of a flowchart of a method of extracting text display orientation information from a broadcast signal and storing the text display orientation information according to an embodiment of the present invention;
3 is an example in which a broadcast program of a channel selected by a user is visually and audibly presented to the user together with subtitles.
4 is an example of a text capture setting screen provided to set an environment to be applied to capturing text from a broadcast signal according to an embodiment of the present invention.
FIG. 5 illustrates an example in which text obtained from a broadcast signal is stored in a file together with a reduced image obtained from an image program according to an embodiment of the present invention.
6 is an example of a text capture setting screen provided for setting an environment to be applied to capturing text from a broadcast signal according to another embodiment of the present invention.
FIG. 7 illustrates an example in which multiple pages of teletext data extracted from a broadcast signal are output on a screen;
FIG. 8 illustrates a method of recording teletext data extracted from a broadcast signal and continuously updated in a file, a method of generating each file, and a page numbering method of a teletext page according to an embodiment of the present invention. One,
9 illustrates an example of a method of generating a text file by dividing each search word and writing text in the file when a plurality of search terms are set according to an embodiment of the present invention.

An embodiment of a method and apparatus for extracting text display orientation information from a broadcast signal and storing the same as a text information file according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 illustrates a configuration of a digital broadcast receiver in which a method of extracting text display orientation information from a broadcast signal and storing the text display orientation information according to an embodiment of the present invention is implemented.

The digital broadcast receiver of FIG. 1 tunes a desired signal band from a broadcast signal (for example, a terrestrial wave, a cable, or a satellite broadcast signal) received through a connected RF signal line 1, for example, a coaxial cable, and the like. A signal demodulator 9 for demodulating and outputting a signal of a digital stream to a digital stream, and a single program selected from a transport stream (MPTS: Multi-Program TS) of a multiplexed program in each of the demodulated outputs; A demultiplexer 10 for selectively outputting a transport stream belonging to management information (for example, PSI) and an output stream of the demultiplexer 10 are stored under the control of the controller 20. The hard disk 13 and each transistor applied from the demultiplexer 10 or read out from the hard disk 13 under the control of the controller 20. A parser 11 for dividing and outputting transport packets of a spot stream by type of video, audio, and the like, and a PES packet by type, which is output through the parser 11, are divided into areas for each stream and temporarily Decoded buffer memory 12 and decoder 15 which decodes data classified for each area stored in the buffer memory 12 and restores and outputs the original AV (video and audio) signal, and a character and a symbol. Or a screen signal generator 18 for generating a video signal for a graphic symbol, a mixer 19 for synthesizing and outputting a video signal according to a set screen configuration, and a portable external storage medium, for example, an external device. Media connection unit 14 for exchanging data by providing an interface according to a connection specification with a memory or a USB device, and a broadcast selected according to a user's request and / or set conditions So that the call is displayed on the screen and is also configured to include the control unit 20 for controlling operation of the respective configuration means in order to store and extract the text information display orientation. The control unit 20 includes a system memory 20a in which information for a control operation and / or a setting environment, and various text information obtained from a broadcast signal during an operation operation are stored. Includes firmware (firmware) for various operations in a form that can be selectively executed.

Meanwhile, the configuration illustrated in FIG. 1 may be integrated with a TV or may be configured in the form of a device added to a computer or a notebook. In addition, the controller 20 receives a request from the user through a normal user interface, for example, a keypad, a remote controller, a touch pad, and the like, and if necessary, controls the screen signal generator 18 to control the request. The video signal for guiding the response is output. The output video signal is visually represented by an electronic device having a normal screen output function, for example, a TV, a monitor, or the like.

FIG. 2 is an example of a flowchart of a method of extracting text display orientation information from a broadcast signal and storing the text display orientation information according to an embodiment of the present invention. Hereinafter, an operation according to an embodiment of the present invention performed by the apparatus of FIG. 1 will be described in detail in parallel with the flowchart illustrated in FIG. 2.

When the user selects a channel to watch a specific broadcast program, the controller 20 causes the broadcast signal corresponding to the channel (or repeater) designated by the user to be tuned. According to the tuning command, the signal demodulator 9 controls to tune an RF signal corresponding to a designated channel (or repeater) in a signal band received through the connected RF signal line 1, and the demultiplexer 10 ) Video, audio and / or text data belonging to one program (corresponding to a designated subchannel if there are a plurality of programs) in the digital stream output from the signal demodulator 9 according to the tuning control. Selectively output the transport stream to transport. Evidence information for the demultiplexer 10 to selectively output only a transport stream corresponding to one program in the digital stream is program specification information (obtained and transmitted in a corresponding tuning channel before the output of the transport stream). A transport packet ID, i.e., PID, identified from PSI: Program Specific Information (PAT, PMT, etc.). The digital stream selected and output from the demultiplexer 10 is also stored in the hard disk 13 in a specific mode, for example, a time-shift mode or a recording mode, and particularly in the time-shift mode. The stream is read in a first-in first-out (FIFO) manner and applied to the parser 11.

The parser 11 removes the header of each transport packet, collects only payload data, and forms a packetized elementary stream (PES) packet on the buffer memory 12 for the received transport packets. Refer to the header information of the configured PES packet to the type (for example, video, audio, subtitle (also called subpicture) or text data, etc.) on the buffer memory 12. Classify. The decoder 15 applies PES packets sequentially stored in the buffer memory 12 to the corresponding internal decoding module according to the type thereof, and decodes and outputs the video and audio signals. Data of the subtitle is output in the form of subtitles that are overlaid on the video signal.

The broadcast program of the channel selected by the user according to the above-described process is represented to the user visually and audibly as illustrated in FIG. 3.

During the above operation, when the user inputs a command of 'text capture' through a menu provided by the controller 20 or through an input means, for example, a specific key on the remote controller (S210), the controller 20 The decoder 15 requires capturing. If the currently set " text capture setting information " designates a disabled state of capturing (S220), the controller 20 does not perform a command of 'text capture' from the user (i.e., Without requesting capturing to the decoder 15), a message informing that the current capturing is designated as inactive is output through the screen signal generator 18 (S222). The "text capture setting information" will be described in more detail below. If capturing is currently enabled, the decoder 15 receives the capturing request and, according to the request, the decoder 15 timestamps the subtitle packet being output at the time the capturing is requested. Decode one image (e.g., the head I-picture in the corresponding PES packet) belonging to a video packet having a timestamp closest to (Decoding Time Stamp (DTS) or Presentation Time Stamp (PTS)). The title packet is transmitted to the controller 20 together with the data of the title packet. Each time a new subtitle packet is decoded, the data transfer operation to the controller 20 is performed.

Meanwhile, the controller 20 determines a name for one file at the same time as the capturing request and generates a file with the name. The file to be created at this time has a format that can be read / written by another device, for example, an application running under a computer OS. This format is designated by the preset "text capture setting information" described below. The name of the file to be generated is determined using the title of the broadcast program currently tuned and output (S221). The title of the broadcast program can be confirmed from an EPG (Electronic Program Guide) previously acquired in the currently tuned channel. The file extension is named in a manner such as ".subtitle.txt" so that the attribute of the information to be captured is included.

The storage medium for creating the file uses the medium specified by the "text capture setting information" in the "system environment setting" previously set. The setting information designated by the "system environment setting" is stored in the system memory 20a, and in the "text capture setting information" as shown in FIG. 4, as shown in FIG. 41, a "storage medium" 42 for designating a medium for storing the text file, a "text file format" 43, an "add image" 44, and the like. The "text file format" 43 is a file type to be stored such as, for example, MicroSoft-Word, Notepad, PDF, etc., and the "add image" 44 includes images associated with time in addition to text. It is specified whether to save. In the example of FIG. 4, items marked relatively dark represent options currently set.

As illustrated in FIG. 4, when the designated medium is a USB or SD memory, the control unit 20 controls the medium connection unit 14 to transmit and receive a signal according to a connection protocol with the storage medium. If the storage medium suitable for the designated medium is connected and prepared (S230), a file generation is requested with the file name determined before (S232). If it is determined that the designated medium does not match or the storage medium is not connected, the control unit 20 outputs a notification message indicating the fact through the screen signal generator 18 and displays the designated storage medium. Instead, the hard disk 13 fixed in the apparatus is determined as a storage medium for recording a file (S231). According to another embodiment of the present invention, an operation of outputting a notification message through the screen signal generator 18 may be performed, and the hard disk 13 may not be designated as a medium to replace a designated storage medium. In this case, the user is notified of the unready state of the storage medium so that the user can access the medium or cancel the capturing request, thereby appropriately handling the unready state.

The control unit 20 generates and opens a text file of the file name previously determined for the designated storage medium (S232), and acquires text data from the subtitle data received from the decoder 15 (S233). The file is recorded in the opened file (S234). At this time, if the subtitle data is an image for text to be displayed, the control unit 20 executes an appropriate image-to-text conversion program to extract text from the image and write it as text data in the file. In addition, when the selection option of the "add image" 44 in the "text capture setting information" is designated as "addition", the control unit 20 moves from the decoder 15 as illustrated in FIG. The received image (or a reduced image obtained therefrom) 51 is first recorded, and then each text 52 obtained from the subtitle data is recorded next (S234). At this time, if the image received from the decoder 15 is large, as described above, the reduced image obtained by down-sampling to an appropriate level is recorded in the file.

As described above, the storage of the text data (or the image together) is continued until a stop of “capturing” is requested from the user or the system is powered off (S260), and there is a stop request from the user. If so, the controller 20 stops the recording operation and closes the file opened for the current recording.

If there is a stop request from the user, if the broadcast program currently being broadcast is terminated and another program is started (S240) (the EPG can know the switching time of the broadcast program.), The controller 20 Closes the file opened for the current recording, creates and opens a new file based on the name of the next broadcast program (S241), and then obtains the text (or a thumbnail and Together) is recorded (S233, S234). Similarly, when the user requests channel switching while the capturing request is not interrupted, a new file is generated based on the name of the broadcast program of the switched channel (S241), and the subtitle data of the switched channel is performed. The text obtained from the program is recorded in the new file (S233, S234). If the program is switched or the channel is switched (S240), of course, closes (close) about the previous program or the file generated in the previous channel.

If the user's frequent channel changes occur while the capture request is not interrupted, meaningless text files can be generated. Accordingly, when the control unit 20 closes one file and generates another new file by switching a channel or a program (S241), if it is determined that the file is not a valid text file by checking the validity of the closed file (S250). The closed file is deleted (S251). For example, the amount of text recorded in the closed file is tens of characters or less, the file size is several hundred bytes or less, or the viewing time of the subtitle data receiving channel that created the file (or creation of the closed file). If the time until closing afterwards is less than a few minutes or less, the text of the subtitle data in the corresponding channel is determined to be not the data to be noticed by the viewer and is deleted.

In one embodiment according to the present invention, when generating a file for text recording, the control unit 20 generates a specific name representing a type of text display-oriented information, for example, a folder named “Subtitle”. After the creation, the file of the file name determined in the same manner as described above may be generated under the folder.

In another embodiment according to the present invention, the aforementioned text capturing is optionally performed for specific specified terms. The search terms for this selective performance may be set in the "text capture setting menu" as illustrated in FIG. 6. Alternatively, a pop-up window may be presented when the capturing command is input by the user, and search terms may be input and set through the window. In the example of FIG. 6, at least one of search terms inputted into the text input field 61b in the “capture search term” setting item 61 (the search terms are separated by 'space' or 'tab', etc.). You will save a text phrase that includes (or both). Separately specified characters (eg, blank for AND and '+' for OR) are used to include AND and OR methods of the search terms. ). At this time, the text phrase to be stored is the entire text by data in one packet including text data (or data converted from text display-oriented data into text) containing the corresponding search word. If search terms are entered in the text input field 61b, and the control panel 61a of the search term-based capture is switched from 'set' to 'not set', the controller 20 ignores the entered search terms. As described above, all the received texts are captured and stored.

Meanwhile, the controller 20 controls the screen signal generator 18 to facilitate input of a search word for capturing text so that the consonant, the vowel, and / or the English alphabet are partitioned and displayed. Output to the image. The character input device allows the user to move to a specific phoneme through a moving key (up, down, left, right arrows), and when the 'selection' key is input, the search word is composed by considering the phoneme of the position.

According to the present embodiment, when text capturing is performed based on an input search word, a user is more likely to be displayed as a subtitle when the scene is a particular scene in a watching program, for example, a drama or a sports relay, for example. If you set search terms such as the name of your favorite actor's drama or 'goal', you can automatically capture thumbnails of the scenes with the subtitles containing the search terms. You can access the storage media you're storing to other computing devices to explore the contents of the file more freely and in various ways. In addition, when the program being broadcasted provides the subtitles in a foreign language, the subtitles may be generated as a file, and then printed in various ways, for example, printed and reviewed through the page, thereby improving learning efficiency. In addition, since the scene image in the subtitle can be recognized together, it is more effective in understanding the meaning or use case of the subtitle.

According to an embodiment of the present invention, when teletext data, which is another type of text display-oriented information, is provided through a broadcast signal, the above-described text capturing and storing process is applied to the teletext data. Teletext data is carried in the form of PES packets in a demodulated data stream on a tuning channel, and is distinguished from video, audio, and subtitles by the stream ID of the PES packet header. Accordingly, the decoder 15 applies and decodes PES packets stored for each type in the buffer memory 12 to a decoding module suitable for the type, and transmits the decoded text data to the control unit 20. . At this time, the page number to which the decoded text data belongs is also transmitted. Of course, the page number of the data is information obtained by decoding from the received teletext information.

The controller 20 stores the text data obtained as described above in the system memory 20a for each page as the teletext data of the corresponding channel. Alternatively, the hard disk 13 may be stored. The stored teletext data is read out from the system memory 20a (or the hard disk 13) according to the user's request for "viewing the teletext" and is output as illustrated in FIG. 7. If the text data stored in the system memory 20a has the same page number, the text data of the corresponding page is stored. If there is a stored page with a page number larger than the updated page that is not updated at this time, the page is deleted. If the same page does not exist in the previously stored text data page, a new page is added as the received page number and additionally stored in the system memory 20a (or the hard disk 13).

If there is a text capturing request from the user, the controller 20 reads text data which is teletext information of all pages stored on the system memory 20a (or the hard disk 13). In the same manner as in one bar, the files are recorded in the page order in the storage medium specified in the " text capture setting information ". At this time, the file name is designated by the program name and serial number and / or the current date / time that are being broadcast at the current time, and the extension name is a name for distinguishing the subtitle described above, for example, “.teletext. txt ”. In one embodiment according to the present invention, a folder with a specific name, for example, "Teletext" may be created in a designated storage medium, and a file of a file name determined under the folder may be generated.

When the text data of the new page number is stored in the system memory 20a by the text data received from the decoder 15, the control unit 20 stores the text of the corresponding page in the previously generated file for the text data. Add data with page numbers. If the text data of the previously stored page is updated by the text data received from the decoder 15, the controller 20 generates a new file in the same manner as described above and updates the generated file. One text data is recorded with the page number. In this case, when the file creation date and time are not used as the file name, as shown in FIG. 8, the text file generated by using the next number in the file name 81 following the serial number of the previously generated file name is the previous text file. To distinguish it from In the case of using the generated date and time as the file name, the serial number may not be assigned since each file can be distinguished from each other only by the date and time.

8 conceptually illustrates files created in this manner. The number assigned to each page when generating the file may be used as it is, or the number 82 assigned to the lowest numbered page starting from 1, as shown in FIG. 8.

On the other hand, when generating the file and recording the text data in the file as described above, the control unit 20 appropriately sets and uses the font size, letter spacing, line spacing, lines per page, and the like. In another embodiment according to the present invention, when the user sets the "text capture mode" in the "text capture setting menu" as shown in Figure 4 or 6, the font size, kerning, line spacing, number of lines per page, etc. A menu window is provided to the user so that each element can be set to a desired value through the menu window, and text data is recorded in the file according to the set value.

Selective capturing based on keywords for the above-described subtitle data can be applied to the teletext data as well. As illustrated in FIG. 6, when the search terms are input and set in the “capture search term” input item, the controller 20 is continuously stored in the system memory 20a (or the hard disk 13). Only text pages containing at least one (or all) of the set search words are read from the teletext data and recorded in the file.

According to an embodiment of the present invention, when a plurality of search terms are set, a text file may be generated by dividing each search term. And, as illustrated in FIG. 9, a page including a search word by adding a corresponding search word 91 to each text file name and specifying a file in accordance with the search terms set by the user more easily (page N). Check the text content of the. If a plurality of set search terms is included in one page (92), the text of the page is repeatedly recorded in the corresponding search word file (93).

In one embodiment according to the present invention, when the teletext data is updated with the same page number, the text data of the updated page is compared with the text data of the corresponding page of the file in which the previous text data is recorded, and thus the same text data. If it is determined that the file for the text data of the updated page may not be generated. At this time, when the date and time are used as the file name, the previously generated file name is changed to the date and time when the updated teletext data was received.

Unlike the subtitle data, the teletext data is likely to be information transmitted by the viewer as determined by the viewer regardless of the video program of the corresponding channel. Therefore, in the case of generating a text file for the teletext data, the text file continues to the text file generated by the previous program without generating a separate file even when the broadcast program in the corresponding channel is switched to another program. It is also possible to record the received teletext data. When switching to another channel, close the current file and create a new file to record the teletext data on the switched channel. Then, the file may be deleted according to the validity check on the closed file, which is the same as in the above description of the embodiment.

In one embodiment according to the present invention, when both the subtitle and the teletext data are received in the currently tuned channel, each data type is independently performed or only one type is selected according to a user's setting. It can also be written to a file.

In accordance with the above description, a user may copy a file (or a file copied from the hard disk 13) generated on a removable storage medium connected to the medium connecting unit 14 to a corresponding file format on another device, for example, a computer. By running the corresponding application to view or print the text file in the storage medium, the user can view details more freely through the keyboard or mouse or more conveniently on the page.

On the other hand, the present invention is not limited to the above-described typical preferred embodiments, but can be carried out in various ways without departing from the spirit and the subject matter of the present invention in various ways that can be carried out in the art Those of ordinary skill can easily understand. If such improvement, change, substitution or addition is carried out within the scope of the appended claims, the technical spirit should also be regarded as belonging to the present invention.

9: signal demodulator 10: demultiplexer
11: parser 12: buffer memory
13: Hard disk 14: Media connection
15: Decoder 18: Screen Signal Generator
19: mixer 20: control unit
20a: system memory

Claims (23)

In the method for storing the information contained in the received broadcast signal,
Tuning a broadcast signal and decoding and outputting a first video program from the tuned broadcast signal;
Extracting text display oriented data from the broadcast signal and obtaining text data therefrom;
Recording the obtained text data in a first file in which a title of the first video program is included in a file name;
When a second video program different from the first video program is provided in the tuned broadcast signal according to time passage or channel switching, the first file is closed, and the second file including the title of the second video program in the file name. Automatically generating and recording the text data obtained from the currently tuned broadcast signal in the second file. The method of claim 1,
The recording of the text data in the first file or the second file may include recording an image obtained by reducing a video scene in the first video program or the second video program which is temporally associated with the text to be recorded. How to record with text. The method of claim 1,
The recording of the text data in the first file or the second file may include recording the text data in the first file or the second file only when the obtained text data includes at least one of preset search terms. How to be. The method of claim 1,
After closing the first file, checking whether the first file is valid and deleting the first file if it is determined to be invalid;
The confirmation of the validity is made based on at least one of the amount of text recorded in the first file, the size of the first file, and the continuous decoding output time for the first video program. The method of claim 1,
Wherein the first file and the second file are generated on a removable storage medium previously designated for file generation or on a fixed storage medium when the removable storage medium is not available. In the method for storing the information contained in the received broadcast signal,
Tuning a broadcast signal to decode and output a video program from the tuned broadcast signal;
Extracting text display oriented data from the broadcast signal and obtaining a plurality of pages of text data therefrom;
Selecting, from the plurality of pages of the obtained text data, a specific text page including at least one of the preset search terms and recording the selected text page in at least one file. The method according to claim 6,
If the text page extracted from the broadcast signal has the same page number as any one of a plurality of previously obtained pages, generating a new file and recording the text page in the new file. How to be. The method according to claim 6,
And the file includes at least one of the set search terms in the file name. The method of claim 8,
The recording may include: a first file including the first search term in a file name when the specific text page includes both first and second search terms belonging to the set search terms, and the second search term. Recording the specific text page in each of the second files containing? The method according to claim 6,
At the time of channel switching, closing the file and generating a new file, recording in the new file a plurality of pages of text data obtained from the broadcast signal tuned in the switched channel;
Checking whether the closed file is valid and deleting the closed file if it is determined to be invalid;
The confirmation of the validity is made based on at least one of the amount of text recorded in the closed file, the size of the closed file, and the continuous decoding output time for the video program in the channel prior to channel switching. The method according to claim 6,
Wherein the at least one file is created on a removable storage medium previously designated for file creation or on a fixed storage medium when the removable storage medium is not available. An apparatus for receiving a broadcast signal and outputting it as a video signal,
A receiver for tuning and outputting a broadcast signal;
A decoder for decoding and outputting an image program and text display-oriented data from the broadcast signal tuned and output by the receiving unit;
A first storage medium for storing data,
A media connection for exchanging data by providing an interface according to a connection specification with a second storage medium that is selectively connected;
When the text display-oriented data is decoded and output from the decoder, a file in which a title of the video program is included in a file name is generated on the first storage medium or the second storage medium connected to the medium connection unit, and the text display is performed. And a control unit configured to record text data extracted from the directional data into the generated file. 13. The method of claim 12,
When the broadcast signal tuned by the receiving unit is switched to another video program in accordance with the passage of time or channel, the control unit closes the file having the title of the video program before the switching as a file name, and the title of the switched program. To automatically generate a file included in the file name on the first storage medium or the second storage medium and to write, in the generated file, text data extracted from the text display oriented data decoded with the switched image program. The device. 13. The method of claim 12,
And the controller is configured to record a reduced image of the video scene in the video program that is temporally associated with the text display oriented data in recording the text data by the text display oriented data to a file. 13. The method of claim 12,
And recording the text data by the text display-oriented data in a file, wherein the control unit is configured to record in the file only when the text data includes at least one of preset search terms. 13. The method of claim 12,
The control unit is further configured to close the file generated for recording the text data by the text display-oriented data, and then confirm that the closed file is valid and delete the closed file if it is determined to be invalid.
The checking of the validity is based on at least one of the amount of text recorded in the closed file, the size of the closed file, and the time until the closing of the closed file after creation. 13. The method of claim 12,
And the textual display oriented data is subtitle data. An apparatus for receiving a broadcast signal and outputting it as a video signal,
A receiver for tuning and outputting a broadcast signal;
A decoder for decoding and outputting an image program and text display-oriented data from the broadcast signal tuned and output by the receiving unit;
A first storage medium for storing data,
A media connection for exchanging data by providing an interface according to a connection specification with a second storage medium that is selectively connected;
When the text display oriented data is decoded and outputted from the decoder, a plurality of pages of text data are obtained from the text display oriented data, and at least one of preset search terms in the plurality of pages of the obtained text data. And a control unit configured to select a specific text page including and record the selected text page in at least one file generated on the first storage medium or the second storage medium connected to the medium connection unit. 19. The method of claim 18,
If the text page obtained from the text display oriented data is the same as any one of a plurality of pages previously obtained, the controller generates the new file and obtains the new page from the text display oriented data in the new file. And configured to record a text page. 19. The method of claim 18,
And the file in which text data based on the text display-oriented data is recorded includes at least one of the set search terms in the file name. The method of claim 20,
In recording the text data based on the text display-oriented data, the controller may include the first search term as a file name when the specific text page includes both first and second search terms belonging to the set search terms. And record the specific text page in each of a first file that includes and a second file that includes the second search term in a file name. 19. The method of claim 18,
The control unit is further configured to close the file generated for recording the text data by the text display-oriented data, and then confirm that the closed file is valid and delete the closed file if it is determined to be invalid.
The checking of the validity is based on at least one of the amount of text recorded in the closed file, the size of the closed file, and the time until the closing of the closed file after creation. 19. The method of claim 18,
And the textual display oriented data is teletext data.

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