JP3148243U - DVD player with the ability to display multinational text-type sub-pictures simultaneously - Google Patents

Abstract

A DVD player having a function of simultaneously displaying a multinational text type subtitle is provided. In this DVD player, a hidden DVD multinational subpicture is basically converted into a text type subtitle by a text type subtitle creation module. Video subtitles and multinational text type subtitles are put together by the video subtitle composition unit, and then the multinational text type subpictures are displayed on DVD video without delay so as to provide both video viewing and language learning effects. To the video output device. [Selection] Figure 3

Description

  The present invention generally relates to a DVD player having a function of simultaneously displaying a multinational text type subtitle. More particularly, the present invention allows a sub-picture having two or more languages in a DVD video to be displayed in a text-type mode so that the user can view the displayed sub-picture and The present invention relates to a DVD player having a function of allowing a displayed sub-picture to be used for another use.

  According to FIG. 1, a prior art DVD player system is disclosed in US Pat. No. 5,907,658. In the disclosed DVD system, the digital data after being read from the DVD disk into the buffer memory area is separated by the demultiplexer unit 2 into a video stream, an audio stream, and a sub-picture stream.

The respective streams are then transmitted to MPEG video decoding unit 3, audio decoding unit 4 and sub-picture decoding unit 5, respectively.
These results are transmitted to the audio output device 6 by the audio decoding unit 4 to output a digital audio signal. These results are transmitted to the video / subtitle composition unit 7 as shown below. Only the sub-picture decoding unit 5 decodes the sub-picture data in a predetermined channel and then transmits these results to the video / subtitle composition unit 7. The video is transmitted to the video output device 8 by mixing by the video / subtitle composition unit 7.

  However, according to such a DVD system, the user can select and display only one subtitle from the multiple subtitles. Further, during display, the subtitle can only be shown in a single sentence. Since such a DVD system lacks a language comparison function, the user cannot learn a foreign language by comparing different languages. For this reason, a bilingual learning environment cannot be created for the user by such a DVD system.

  According to FIG. 2, another prior art DVD player system was described in Taiwan Patent Publication No. 200530940. In this system, a character recognition unit 11 is added to the DVD player in order to recognize a subtitle picture from the subpicture decoding unit and then convert the subtitle picture to a text code output on the screen.

  However, the DVD player described in this way is a kind of hardware for displaying a device capable of simultaneously displaying only one type of subtitle. Furthermore, the displayed sentence cannot be viewed by the user. When a system is intended to be able to display more than two types of sentences simultaneously, an additional subtitle database must be installed in the DVD disc.

  However, setting up an additional subtitle database within a DVD disc is such a DVD video that is severely limited when a user intending to provide bilingual education with traditional DVD video operates it. Can hardly be seen. Students who intend to learn a foreign language with such a restricted DVD display system can only achieve restricted results.

  Accordingly, an object of the present invention is to provide a DVD player having a function of simultaneously displaying multinational text type subtitles. In this DVD player, the hidden DVD multinational subtitle is basically converted into a text-type subtitle by the text subtitle creation module in either the real-time conversion mode or the batch conversion mode.

The video subtitle and the multinational text type subtitle are put together by the video subtitle composition unit and then transmitted to the video output device. Furthermore, the displayed multinational text type subtitle is marked with these corresponding display timecodes, which is useful to the user who selects the display text in this subtitle and serves as the starting position for the display video. In addition, subtitles with multinational characters can be displayed on the DVD video at once to provide both video viewing and language learning effects.
The present invention can be more fully understood by reading the following detailed description and examples with reference to the accompanying drawings.

  According to FIG. 3, the DVD player having the function of simultaneously displaying the multinational text type subtitle according to the present invention includes the user interface control unit 12. The user interface control unit 12 is provided to receive multinational language options and conversion mode options from the user.

  For example, when the user selects the third and fifth languages, the user interface control unit 12 outputs the SP3 and SP5 sub-picture control signals 13 to the preinstall unit 16. When the user selects the real-time mode in the conversion mode option, the user interface control unit 12 outputs the TM signal 14 to the demultiplexer unit 17 in real time setting.

  The real-time conversion mode has a multinational subtitle that is converted into a text-type subtitle at the same time as the DVD video is played back. The batch conversion mode is a state before the DVD video is played back. Have multinational subtitles to be converted. In order to receive the multinational subpicture control signal 13 issued from the user interface control unit 12, a preinstallation unit 16 is provided. Here, SP1 is a sub-picture control signal in the first language of the subtitle, SP2 is a sub-picture control signal in the second language of the subtitle, and so on.

  Thereafter, the preinstall unit 16 simultaneously takes in the multinational subpicture data from the DVD disk 15 in response to the input of the subpicture control signal 13. Then, according to different language options and conversion mode options, the demultiplexer unit 17 performs various processes as follows.

(1) Real-time conversion mode:
In this mode, the device 17 and the text subtitle creation module 20 operate synchronously. The device 17 reads the digital data from the preinstall unit 16 and then separates the digital data into a video data stream, an audio data stream and a sub-picture data stream. The video data stream is transmitted to the video decoding unit 17. The audio data stream is transmitted to the audio decoding unit 18.

  The device 17 can receive a sub-picture data stream of only one language from the pre-installation unit 16, and then the sub-picture data stream containing one language is transmitted to the subtitle decoding unit 22. Therefore, when the user selects only one language from the user interface control unit 12, the demultiplexer unit 17 operates accordingly as a normal DVD player.

  On the other hand, the multinational subpicture data stream captured by the preinstall unit 16 is transmitted into the text subtitle creation module 20. Thereafter, the multinational text-type sub-picture is likely to be created by the device 20 and can be configured into a new video output along with the video output data from the device 18 and the sub-picture output from the device 22.

(2) Batch conversion mode:
Processing the digital data read from the DVD disk 15 is a two-pass processing procedure in the batch conversion mode. The second pass can only be activated after the first pass has ended.

  First pass: When the device 16 reads digital data from the DVD disc 15, a sub-picture data stream containing a multinational language is then transmitted into the text sub-picture creation module 20. At this point, the MPEG video data stream and the audio data stream are discarded, and the multinational sub-picture control signal 13 (SP1, SP2,... And SPN) is taken into the signal control unit 201.

  The user interface control unit 12 allows the user to determine the time during which the sub-picture data must be processed, for example 5-50 minutes of the DVD title. After the sub-picture data of the selected length is processed by the text sub-picture creation module 20, a multi-national text type sub-picture is created and stored in the text sub-picture buffering unit 206.

  Second pass: When device 16 reads digital data from DVD disc 15 again, some start with the same time code that was processed in the first pass. At this point, a sub-picture data stream containing only one language selected by the user at the first position is read and transmitted into the demultiplexer unit 17.

  Next, the demultiplexer unit 17 separates the digital data into an MPEG video data stream, an audio data stream, and a sub-picture data stream. The MPEG video data stream is transmitted to the video decoding unit 17. The audio data stream is transmitted to the audio decoding unit 18. The subpicture data stream is transmitted to the subpicture decoding unit 22.

  The text subpicture creation module 20 is provided for creating a display file for subpictures including multinational text. This module 20 converts the multinational subpicture data 202 (SUB1, SUB2,... SUBN) received from the preinstall unit 16 into a multinational picture type subpicture 204 (PIC1, PIC2,... PICN). A sub-picture image conversion unit 203 provided for this purpose is included.

  The signal control unit 201 of the text sub-picture creation module 20 continuously receives the variable enable signal in response to the multinational sub-picture control signal 13 (SP1, SP2,... SPN) received from the user interface control unit 16, and the character recognition conversion unit 205. Send to. The character recognition conversion unit 205 receives the multinational subpicture control signal 13 (SP1, SP2,... SPN) from the signal control unit 201, and then receives a multinational picture type sub-picture in the form of an image format such as BMP or JPG. It is provided to continuously perform character recognition in the picture 204 (PIC1, PIC2,..., PICN).

  Each multinational subpicture control signal 13 (SP1, SP2,... SPN) represents one country's subpicture control signal (eg, SP1 is English, SP2 is Traditional Chinese, SP3). Therefore, the character recognition conversion unit 205 captures a language recognition engine (for example, English, Chinese, and Japanese) by the corresponding multinational subpicture control signal 13 (SP1, SP2,... SPN).

  Accordingly, a picture-type subpicture is converted into its corresponding text-type subpicture that facilitates the installation of a text-type subpicture display file. In this case, the character recognition conversion described above is a traditional technique of optical character recognition (OCR). This OCR function can be invoked to execute in either the built-in mode or the built-out mode.

  When the character recognition conversion unit 205 receives the multinational sub-picture control signal 13 (SP1, SP2,... SPN) from the signal control unit 201, it converts each multinational picture-type subpicture 205 according to the status of the enable signal. (PIC1, PIC2,..., PICN) is transmitted from each provider to its corresponding OCR software, and a text-type sub-picture and a sub-picture display time code are created.

  The thus created subpicture and time code are then transmitted to the text subpicture buffering unit 206. The text sub-picture buffering unit 206 receives the enable signal from the control unit 201. Next, the unit 206 constructs the text type sub-picture and the sub-picture display time code from the character recognition conversion unit 205 into the text subtitle display file 206, and stores the file 206. After these text subtitle display files are completed, all text subpicture display files are sent together to the video subpicture composition unit 22.

  However, since the text sub-picture display file has already been completed in the first pass during the second pass of the batch conversion mode, the control unit 201 does not change the sub-picture image conversion unit 203 and the character recognition conversion unit. No signal is sent to both 205 to disable these operations again. The time code of the display text sub-picture is a time indicated by the text and a duration during which the text is kept displayed.

  This time code is provided to give information to the DVD player as to how much time zone and sentence should be displayed. The signal control unit 201 basically receives the multinational sub-picture control signal 13 (SP1, SP2,... SPN) and the conversion mode signal 14 (TM) from the user interface control unit 12, and then sends the enable signal to the sub-control signal. Transmit to the picture image conversion unit 203, the character recognition conversion unit 205, and the text sub-picture buffering unit 206.

Video decoding unit 18 has an input connected to the output of demultiplexer unit 17. Video decoding unit 18 decodes the video data stream received from this input, and then outputs the decoded video data to video subpicture construction unit 23.
The audio decoding unit 19 has an input connected to the output of the demultiplexer unit 17. The audio decoding unit 19 decodes the audio data stream received from this input end, and then outputs the decoded audio signal to the audio output device 21.

  The video sub-picture composition unit 23 is connected to the video decoding unit 18, the sub-picture decoding unit 22 and the text-type sub-picture creation module 20, respectively, for receiving video data, sub-picture data and text sub-picture display files. And are configured and connected to them.

  After this configuration and concatenation, the unit 23 transmits the result (sub-picture 243 including multinational text) to the video output device 24. While the video data stream and the sub-picture display file are combined and connected by the video sub-picture composition unit 23, a viewing area 165 where the user can view the display text, and play key, pause key, stop Player function keys such as keys, forward and backward keys are added to the video. At the same time, the sentence 244 shown in the sub-picture can be marked to indicate each of these corresponding display times and can act as a starting position for starting the display of the video.

  The video output device 24 has an input end connected to the output end of the video sub-picture composition unit 23. Device 24 is used to display a video that includes sub-pictures with text in a variable language so that a user can both watch the video and learn the language.

  According to FIG. 4, the video output device 24 is a screen 241. Through the video sub-picture composition unit 22, the video and the sub-picture inclusion multinational language are combined and concatenated to show the DVD video at a time a sub-picture containing three or more text-type languages. And then transmitted to the video output device 24. Since the displayed sentence is marked for each corresponding display time, the user can view both displayed sentences.

  The user can further select a sub-picture sentence to act as a starting position to start displaying the video. Thus, for the user, both video viewing and language learning objectives are achieved. In the embodiment according to the present invention shown in FIG. 4, the video 242 and the sub-picture 243 can be simultaneously displayed on the screen 241 by the DVD player having the function of displaying the sub-picture including the multinational text. .

  The display sentence 244 is marked by the combination and connection of the video data and the subtitle display file by the video subpicture composition unit 23. These display sentences can be searched in the browsing area 245. In addition, functions such as retrieval of displayed text, vocabulary explanation and vocabulary pronunciation can be performed in the viewing area 245.

  Display functions such as play, pause, advance, reverse, etc. in video 242 can be controlled by display function keys 246 to help the user to learn conversations on that DVD video, and thus Bilingual learning is promoted. The user seems to be more interested in bilingual learning, and the disadvantages found in conventional bilingual learning are eliminated by using the DVD playback apparatus according to the present invention.

  The comparison between the system according to the present invention and the prior art system is performed as follows in order to make the progress and usefulness of the present invention remarkable.

Disadvantages in prior art systems 1. Only display subtitles containing one or two languages with one sentence,
2. You cannot view the displayed text without delay,
3. Cannot provide features such as search for displayed sentences, vocabulary explanation and vocabulary pronunciation,
4). It cannot provide full multilingual learning.

Advantages in the system according to the invention: 1. It is possible to display subtitles containing more than one language;
2. You can view the display text without delay in the video.
3. It has various functions such as display sentence search, vocabulary explanation and vocabulary pronunciation,
4). A better multilingual education environment can be provided.

  Although the invention has been particularly shown and described in connection with preferred embodiments, it is expected that changes and modifications will become apparent to those skilled in the art without doubt. Accordingly, the claims are intended to be construed to include all such changes and modifications that fall within the spirit and scope of the present invention.

1 is a schematic diagram of a prior art DVD player system. FIG. 1 is a schematic diagram of another prior art DVD player system. FIG. 1 is a schematic view of the structure of a DVD player according to the present invention. 1 is a schematic diagram during operation of a DVD player according to the present invention.

Claims (3)

A user interface control unit that receives a multinational language option from a user and then outputs a corresponding sub-picture control signal to a pre-install unit;
The pre-installing unit receives the multinational subpicture control signal from the user interface control unit, then reads digital data from a DVD storage medium, and then reads the digital data into a demultiplexer unit and a text type subpicture. A user interface control unit provided to output to each input terminal of the creation module and to output the multinational subpicture data to a subpicture image conversion unit capable of converting the subpicture data into an image picture;
Having three input terminals, one of which is connected to one of the output terminals of the pre-installing unit, one of the other two input terminals receiving a multinational subpicture control signal, and the remaining two inputs A text-type subpicture creation module, wherein the other end receives a conversion mode to the signal control unit, the text-type subpicture creation module having an output end connected to a video subpicture composition unit A text-type sub-picture creation module having a buffering unit;
A video decoding unit having an input connected to the output of a demultiplexer unit, wherein the video data stream received from the input is decoded and then the decoded video data is converted to the video subpicture A video decoding unit for output to the composition unit;
An audio decoding unit having an input connected to the output of a demultiplexer unit, the audio data stream received from the input being decoded, and then the decoded audio data to an audio output device An audio decoding unit to output;
With
The video sub-picture composition unit is connected to the video decoding unit and the text-type sub-picture creation module, respectively, and composes and connects the received video data and text sub-picture display file, and then a video output device And the video output device has an input connected to the output of the video subpicture composition unit,
DVD player with a function to display multinational text-type sub-pictures simultaneously.   The demultiplexer unit separates the digital data into an MPEG video data stream, an audio data stream, and a sub-picture data stream, the MPEG video data stream is output to a video decoding unit, and the audio data stream is the audio decoding The DVD player according to claim 1, wherein the sub-picture data stream is output to the sub-picture decoding unit. The text type sub-picture creation module
A sub-picture image conversion unit provided for receiving the multi-national sub-picture data stream from the output end of the pre-install unit and outputting the multi-national picture-type sub-picture to the character recognition conversion unit;
The multinational subpicture control signal from the control unit and the multinational picture type subpicture from the subpicture image conversion unit are received, and character recognition conversion is continuously performed on the multinational picture type subpicture. A text-type sub-picture and a sub-picture display time code, and the sub-picture and time code thus created are then transmitted to the text sub-picture buffering unit. A recognition conversion unit;
Receiving an enable signal from the signal control unit, and then configuring and storing the text-type subpicture and the text subpicture display time code from the character recognition conversion unit in a text subpicture display file; A text sub-picture buffering unit in which the file is then output to the video sub-picture composition unit;
A signal control unit having an input connected to an output of the user interface control unit, which basically receives the multinational subpicture control signal from the user interface control unit, and then receives the received signal A signal control unit for transmitting to the character recognition conversion unit and the text sub-picture buffering unit;
The DVD player according to claim 1, comprising:

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