KR20030025964A - Method for generating caption file of mp3 player and mp3 player displaying thereof - Google Patents

Abstract

PURPOSE: A method for creating caption files of an MP3 player, and an MP3 player displaying the caption files are provided to obtain the caption files of a various foreign languages, and display the caption files in characters having various fonts, sizes, and properties through the MP3 player. CONSTITUTION: Audio data including voice signals is selected(S110). At least one language is designated as languages of caption files among a plurality of languages(S120). Characters corresponding to the voice signals are input in the designated languages(S130). Caption files are created by the designated language, adding font information to the input characters(S140).

Description

METHOD FOR GENERATING CAPTION FILE OF MP3 PLAYER AND MP3 PLAYER DISPLAYING THEREOF}

The present invention relates to an MP3 player caption file generation method and an MP3 player device for displaying the caption file. More specifically, the caption file of the MP3 player is added by adding font information to a character corresponding to a voice signal of audio data. A method of generating a file and an MP3 player device for displaying the caption file thereof.

Moving Picture Experts Group (MPEG) is a video and multimedia expert group that is developed by experts in this field under the auspices of international standards bodies such as the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It provides technical criteria such as compressing a signal, transmitting it, and restoring it again.

MP3 is named after M, P and 3 at the end of the Moving Picture Experts Group Layer-3. Layer-3 is a version upgraded to Layer-3 after Layer-1 and Layer-2. In general, Layer-1 has a compression ratio of about 1: 4, Layer-2 has a compression ratio of about 1: 6 to 1: 8, and Layer-3 has the most excellent compression ratio of 1:10 to 1:12. Used.

Thanks to this innovative development of digital audio data processing technology, portable digital audio players, or MP3 players, have emerged. In addition, using a memory card, it is possible to play and output desired audio for a long time without any deterioration of sound quality using a memory card.

On the other hand, the MP3 player provides a caption function that allows the user to learn the song lyrics easily by outputting the words corresponding to the song lyrics on the LCD window of the MP3 player when the audio signal is a song. Is also used.

However, since the caption function provided by the conventional MP3 player provides the characters corresponding to the audio signal in the form of simple text, it is not suitable for expressing various foreign languages, which does not correspond to the international trend, but also in one simple font with a predetermined size. It is not enough to meet the needs of young people, the main consumer of MP3 players.

Accordingly, there is a need for a new caption file generation method for an MP3 player capable of expressing caption characters displayed in the MP3 player in various fonts, various character attributes, and various sizes, and a new MP3 player displaying the same.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and after selecting audio data including a voice signal, inputting a character corresponding to the voice signal in a designated language, and adding font information to the input character, the designated language The purpose of the present invention is to provide a caption file generation method of MP3 Player that generates a caption file for each.

It is another object of the present invention to provide an MP3 player device that outputs a voice signal and a character in synchronization with a character of a caption file including audio signal and font information of audio data.

Another object of the present invention is to provide a method for generating a caption file of an MPP player that generates a graphic screen corresponding to a voice signal of audio data as well as text, and an MPP player device for outputting the caption file.

1 is a flowchart illustrating a process of generating a caption file of an MP3 player according to the present invention.

2 is a diagram illustrating a user interface for generating a caption file of an MP3 player according to the present invention.

Figure 3 illustrates the structure of a caption file generated in accordance with the present invention.

4 is a block diagram of an MP3 player displaying a caption file generated according to the present invention.

5 illustrates an MP3 player displaying a caption file generated in accordance with the present invention.

6 is a flowchart illustrating a process of generating a caption file of an MP3 player according to another embodiment of the present invention.

FIG. 7 illustrates a user interface for generating a caption file of an MP3 player according to another embodiment of the present invention. FIG.

8 illustrates an MP3 player displaying a caption file generated according to another embodiment of the present invention.

<Explanation of Signs of Major Parts of Drawings>

402 ... card interface 404 ... ROM

406 ... ram 408,410 ... control unit

412 ... codec part 414 ... command input part

416 ... LCD Driver 418 ... Audio Driver

420 ... Converter

In order to achieve the above object, a caption file generating method of an MP3 player according to a preferred embodiment of the present invention is a method for generating a caption file displayed on an MP3 player through caption editing means. Selecting audio data including at least one voice signal; (b) designating at least one of the plurality of languages; (c) inputting a character corresponding to the voice signal in the designated language; (d) adding the font information to the character to generate a caption file for each designated language.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail. DETAILED DESCRIPTION The following detailed description and the accompanying drawings are provided to provide a thorough understanding of the present invention so that those skilled in the art may readily practice the present invention. In addition, detailed description of the well-known structure and operation which may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a flowchart illustrating a process of generating a caption file of an MP3 player according to the present invention. Referring to the drawings, the process of generating the caption file of MP3 player according to the present invention includes audio data selection step S110, language designation step S120, character input step S130, and caption file generation step S140. It is made to include.

The caption file generation process of the MP3 player may be performed on a personal computer based on an operating system such as Windows or Linux, and is performed by a new caption editor application running on the OS.

The audio data selection step (S110) is a step of selecting an audio data file to be output through the MP3 player device. The audio data may include one or more voice signals, and is preferably a compressed data file of an MP3 coding method to which an auditory psychological model is applied, but is not limited thereto. WMA (Window Media Format), AAC (Advanced Audio Coding), Atrac3 ( It may be a compressed audio data file according to various coding schemes such as Adaptive Transform Acoustic Coding. Accordingly, it is preferable that the MP3 player device for reproducing these audio data files be provided with an integrated codec supporting the various coding methods as well as the MP3 coding method.

The language designation step (S120) is a step of selecting a specific country and designating one of a plurality of languages as a language of a caption character. The plurality of languages are specific languages used in each country such as Korean, English, Japanese, Chinese, French, German, and Spanish. One or more countries may be designated, and one or more countries may be specified through a user interface provided by the caption editor. You can also specify the language of the caption text by selecting a specific language directly without selecting a country.

The text input step S130 is a step of inputting a text corresponding to the voice signal in the designated language. Text is a visual transformation of the meaning of the audio signal. When the language of the voice signal and the language of the designated country are different, the text may be translated and input into the language of the designated country. If there is more than one language of the designated country, the caption editor preferably provides a user interface for inputting the text in more than one country.

In addition, the caption editor provides an interface for further inputting information on when a character is displayed so that the voice signal and the corresponding character are synchronized and output through the MP3 player device. The information on when the character is to be displayed may be implemented by a file pointer method or a timing method that is typically used when creating a caption file.

The caption file generating step (S140) is a step of generating a caption file by adding font information to the character and storing the caption file. The font information may include a font of a character, a style of a character, a type of a character, a size of a character, an attribute of a character, and the like. The font information may be configured to be recognized by the operating system of the personal computer to support the caption editor, and may be implemented to directly recognize the caption editor according to the present invention running on the operating system.

The font of the character is one of a bitmap method, a true type method, a vector method, an outline method, and an open type method for representing each character graphically. Can be. In particular, the outline method is an outline font type, which is effective in reducing the capacity of a file through a high compression ratio. Therefore, the outline method is preferable as an embodiment of the font according to the present invention. Therefore, it is more preferable in the embodiment of the font according to the present invention because it can be implemented with a small memory as well as the advantage of being able to input and output at high speed. When the character is in accordance with the bitmap method, the character may be represented by a size of 16 x 16 pixels [256 bit (32 bytes)], and the character may be implemented in the form of various pixels according to the resolution supported by the MP3 player's LCD.

The font of the character may be a conventional font such as a base, a roll, a Myungjo, a spring, a Gothic font, and may be a new font suitable for being displayed on the LCD of the MP3 Player according to the present invention.

The character style may be normal, italic, bold, bold italic, and the like, and the type of the character may be any of full-width, half-width, and pictograms. In addition, the size of the text may have a variety of sizes, such as 8, 9, 10, 11, and the properties of the text indicate the property of bringing a visual effect by assigning special embellishment to the text, such as text color, underline, subscript, and shadow.

In the type of the letter, the full-width character is a character whose ratio of the width and height of the character is 1: 1 and represents one Korean or Chinese character in two bytes, and the half-width character reduces the width of the full-width character to 1/2. Represents one letter of English or one number of characters. The pictogram may be a combination of special characters that enhance visual effects in expressing the contents of the voice signal. The combination of the special characters may be represented by emoticons commonly used in the young consumer layer.

Therefore, the caption file according to the present invention adopts a method in which the characters constituting the caption file are processed as graphics, unlike the existing text system, so that various types of fonts can be provided as well as the characters are enlarged. Edo characters are not broken. In addition, the visual effect of the caption character can be further enhanced according to the attribute information of the character added to the character.

After inputting text and font information corresponding to the voice of audio data, the caption file is stored by designating a file name for each designated language. In the step of saving the caption file, the caption editor is authorized by adding caption file information related to the caption file such as the caption editor program identifier, caption program version, user name, caption file creation date, caption file writing language, and error check code. Only the user who received the MP3 player device can output the audio data and the caption file.

Hereinafter, a user interface provided in a process of generating a caption file of an MP3 player according to the present invention will be described.

2 is a diagram illustrating a user interface for generating a caption file of an MP3 player according to the present invention. Referring to the figure, 'Effects of global warming.mp3' is selected 212 as the audio data file, and English and Korean are selected 222 as the language of the text corresponding to the audio signal of the audio data. The audio data file may be designated through the music file selection menu 210. In this case, the text corresponding to the voice signal of the audio data may refer to the pre-written text file (224) to additionally input 230 only the time information on which the caption text is displayed. In the present embodiment, a case where an English language corresponding to an audio signal of audio data is read into a text file and displayed on a user interface provided by a caption editor is illustrated.

When the content corresponding to the audio signal of the audio data is input as characters constituting English and Korean (220), the synchronization of the output of the English and Korean characters may be adjusted while simulating the state displayed on the LCD of the MP3 player. In this embodiment, the caption character corresponding to English at the time corresponding to '27: 19 'is' publication Nature. They say, 'and the caption character corresponding to Korean was announced. They're output 250 in sync.

After a character corresponding to a voice signal of audio data is input, a caption file is generated and stored for each designated language. If the designated language is English, the caption file is designated as 'Effects of global warming.KT1'. If the designated language is Korean, the caption file is designated as 'Effects of global warming.KT2' (222). This can be done through the selection of the lyrics file storage menu 240 shown.

In the above embodiment, when a selection menu for font information is not illustrated, a specific font is designated as a default. In the caption editor, a user interface may be added to the font information menu for selecting one of the fonts described in FIG. 1 or a new font suitable for being displayed on the LCD of the MP3 player as the font information of the character.

3 is a diagram illustrating a structure of a caption file generated according to the present invention. Referring to the figure, the caption file according to the present invention is composed of a file information unit and a data unit.

The file information section includes a caption editor program identifier (2 bytes), a caption editor program version (2 bytes), a user name (20 bytes), a creation date (8 bytes), a writing language (3 bytes), an error check code (2 bytes), and A spare area (27 bytes) is included.

The data portion includes a field indicating character type (1 byte), data (16 to 256 bytes), and character position (4 bytes). The basic unit of the data unit is preferably configured by a line unit displayed on the LCD of the MP3 player device. For example, when the data is 16 bytes, a text character having only character code (2 byte) information ( 2 bytes) shows 8 characters, and 256 bytes shows 8 characters of graphic characters (32 bytes) using the bitmap method using 16 x 16 pixels.

4 is a block diagram of an MP3 player displaying a caption file generated according to the present invention. Referring to the same figure, the MP3 player device according to the preferred embodiment of the present invention comprises a card interface 402 for connecting to a memory card storing audio data and a caption file, and a RAM 406 for storing the audio data and the caption file. A command input unit 414 for inputting a user command, a ROM 404 for storing an operating system for reproducing the audio data and the caption file, a codec unit 412 for converting the audio data into a voice signal, and the codec unit A converter 420 for converting an output signal into an analog signal, an audio driver 418 for outputting the analog signal, an LCD driver 416 for displaying characters of the caption file on the LCD, and a playback command through the command input unit The control unit 408 and 410 control the output of the voice signal and the text in synchronization with the voice signal and the text.

In particular, the audio data includes at least one voice signal, the caption file includes a character corresponding to the voice signal, and the character is added with font information in a predetermined language.

The memory card further stores a font file, and the font file is stored in the RAM 406 through the card interface 402. The memory card may use a smart media card (SMC) or a multi media card (MMC).

The control unit 408 or 410 controls to output the text according to the font information by referring to the font file when outputting a voice signal and a text.

The MP3 player device according to the present invention may further include an FM transmitter 422 for transmitting the voice signal through a predetermined frequency to the FM radio receiver mounted in the vehicle. As a result, the audio signal output from MP3 is reproduced in high quality through the audio speaker mounted in the vehicle. The predetermined frequency may be a channel to which no broadcast is allocated in the region in which the vehicle is operated among FM frequency channels existing in the 88.1 MHz to 107.9 MHz band, which may be designated through a manual or automatic channel selection function.

5 illustrates an MP3 player displaying a caption file generated according to the present invention. Referring to the drawing and the operation of outputting a caption file according to the present invention with reference to FIG. 6, first, a user accesses a website that provides an audio data file, a corresponding caption file, and a font file of a caption file. Download them. The personal computer may obtain the audio data file, the caption file, and the font file of the caption file not only online, such as the Internet, but also through an offline medium, ie, a floppy disk, a CD-ROM, or a floppy disk.

The memory card stores the audio data file, the caption file and the font file through the input / output interface of the personal computer, in particular the USB interface, and is then inserted into the MP3 player memory card interface 402.

The user first selects the load button 510 and loads the audio data file to be output as voice through the MP3 player device into the RAM 406. In this case, it is preferable that the caption file and the font file corresponding to the audio data file are simultaneously loaded into the RAM 406.

Then, when the play button is selected for outputting the loaded audio data file, the characters of the caption file are output to the LCD of the MP3 player device in synchronization with the audio signal. In this case, the user may select one or more of the provided caption files (512). Information about the selected caption file is preferably stored and managed as a file with the extension cfg.

In the present embodiment, a state 514 is displayed in which the English language 'atmosphere has begun to affect' and the Korean language 'influence life' are displayed at a time of '00: 14 '. In the present exemplary embodiment, two languages of English and Korean are selected. However, the present invention is not limited thereto, and when there are caption files generated in a plurality of languages, two or more languages may be selectively output.

Others have functions for normal operation of MP3 player devices, such as selecting the repeat section, stopping, and selecting the next audio file.

6 is a flowchart illustrating a process of generating a caption file of an MP3 player according to another embodiment of the present invention. Referring to the drawing, a process of generating a caption file of an MP3 player according to another embodiment of the present invention includes an audio data selection step (S610) and a graphic frame input step (S620).

The audio data selection step (S610) is a step of selecting an audio data file to be output through the MP3 player device as described above with reference to FIG. 1. The audio data includes one or more audio signals.

The graphic frame input step (S620) is a step of designating and inputting a graphic frame corresponding to the voice signal. The graphic frame represents an image representing the content of the audio signal as an image, and may be an image file such as a production graphic data, a photo, a video cut, or the like containing a fairy tale, cartoon, or advertisement. The graphics frame method may use a bitmap method or a vector graphics method, and in particular, when using a GIF or JPEG format bitmap method supported on the Internet, it is preferable to secure high compatibility.

When the graphic frame is in accordance with the bitmap method, one graphic frame may be expressed in a size of 128 x 16 pixels [204 bit (256 bytes)], and the four graphic frames are synchronized and displayed on the LCD of the MP3 player. The graphic screen is made. In the present exemplary embodiment, the LCD of the MP3 Player is configured with four lines, and a graphic frame is designated for each line to display one graphic screen. However, the present invention is not limited thereto, and the lines may be expanded or reduced. It is self-evident to. Therefore, when the entire LCD window is composed of one line, the graphic frame itself having a size of 128 x 64 pixels is composed of one graphic screen.

The process of storing the audio signal and the graphics frame and the caption file are the same as those described with reference to FIG. 1.

The caption file generated by the above process has a structure in which the caption file includes a caption file information unit and a data unit, and the caption file information unit includes at least one of a caption program identifier, a caption program version, a user name, a creation date, a creation method, and an error check code. The data unit includes one of graphic frame types, graphic frame data, and graphic frame display information. The creation method may be either a bitmap or vector graphic method, and the type of the graphic frame is the same as the content described with reference to FIG. 3 except that the information on the graphic format such as gif and jpeg is displayed.

Hereinafter, a user interface for generating a caption file of an MPS player according to another embodiment of the present invention will be described.

7 is a diagram illustrating a user interface for generating a caption file of an MP3 player according to another embodiment of the present invention. Referring to the figure, 'ildlife Reacting to Climate Changes.mp3' is selected as the audio data file, and a graphic frame corresponding to the audio signal of the audio data is input (710). By inputting the graphic frame at the time when the graphic frame of the input of the graphic frame is displayed. In this embodiment, the LCD of the MP3 Player is composed of four lines, and the corresponding graphic frames are input for each line, that is, 'irtccpic10-1.gif, irtccpic10-2.gif, irtccpic10-3.gif, irtccpic10-4.gif'. do. Here, irtccpic10-1 means a graphic frame corresponding to the first line constituting the 10th graphic screen.

In addition, as described above with reference to FIG. 2, the synchronization of the graphic screen may be adjusted while simulating the audio signal of the audio data and the output state 720 of the graphic screen corresponding thereto.

According to another exemplary embodiment of the present invention, an MP3 player device for displaying a caption file generated by the present invention includes a card interface for accessing a memory card storing audio data and a caption file, a RAM in which the audio data and the caption file are temporarily stored, A command input unit for inputting a command, a ROM storing an operating system for reproducing the audio data and the caption file, a codec unit for converting the audio data into a voice signal, a converter for converting the output signal of the codec unit into an analog signal, An audio driver for outputting the analog signal, an LCD driver for displaying the graphic frame of the caption file on the LCD, and when a play command is inputted through the command input unit, the audio signal and the graphic frame are synchronized with the audio signal It is configured to include a control unit for controlling the output .

The audio data includes at least one voice signal, and the caption file has the same configuration as the MP3 player apparatus described with reference to FIG. 4 except that the caption file includes a graphic frame composed of an image corresponding to the voice signal. In addition, the MP3 player device for displaying the caption file fish according to another embodiment of the present invention further comprises an FM transmitter for transmitting the voice signal through a predetermined frequency to the FM radio receiver speaker equipped with audio Can be output through

8 is a diagram illustrating an MP3 player displaying a caption file generated according to another embodiment of the present invention. Referring to the same figure, an MP3 player displaying a caption file generated according to another embodiment of the present invention outputs the audio data file generated in FIG. 7 and a caption file corresponding thereto. In the present embodiment, a grip pack screen composed of four graphic frames is displayed at a time of '00: 48 '. The operation method of the other MP3 player device is as described above.

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 gist of the present invention, various modifications, alterations, substitutions or additions are common in the art Those who have knowledge will easily understand. If the implementation by such improvement, change, substitution or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

As described in detail above, according to the present invention, by adding font information to a character corresponding to an audio signal of audio data to generate a caption file for each specified language, caption files of various foreign languages are kept in line with the trend of internationalization of MP3 players. Has the effect of providing.

In addition, the caption file including the font information is displayed as characters of various fonts, sizes, and attributes through the MP3 player device, thereby having a different effect of satisfying various expression needs of young people who are the main demand class of the MP3 player.

In addition, there is another effect of viewing a graphic screen corresponding to a voice signal of audio data as well as text as a caption file to view a graphic screen such as a fairy tale book, a comic book, an advertisement through an MP3 player.

Claims (13)

In the method for creating a caption file displayed by the MP3 player through caption editing means, (a) selecting audio data including at least one voice signal; (b) designating at least one of the plurality of languages; (c) inputting a character corresponding to the voice signal in the designated language; and (d) generating a caption file for each designated language by adding font information to the character. The method of claim 1, The font information caption file generating method of MP3 player, characterized in that it comprises at least one of the font of the character, the style of the character, the type of character, the size of the character and the attributes of the character. The method of claim 2, The type of the character is a caption file generation method of MP3 player, characterized in that any one of full-width, half-width and pictograms. The method of claim 2, The font of the character is a caption file generation method of MP3 player, characterized in that the bitmap method, TrueType method, vector method, outline method and an open type method. According to claim 1, The caption file has a structure including a caption file information unit and a data unit, The caption file information unit includes at least one of a caption program identifier, a caption program version, a user name, a creation date, a writing language, and an error check code. And a caption file generating method of MP3 player, characterized in that the data unit comprises a character type, a character code, character display information, and font information of the character. A card interface for accessing a memory card storing audio data and caption files, a RAM for temporarily storing the audio data and the caption file, a command input unit for inputting a user's command, and an operating system for reproducing the audio data and caption file A codec unit for converting the audio data into a voice signal, a converter for converting the output signal of the codec unit into an analog signal, an audio driver for outputting the analog signal, and an LCD for displaying the characters of the caption file on the LCD. In the MP3 player comprising a driving unit, a control unit for controlling the output of the voice signal and the character in synchronization with the voice signal and the character when the command is input through the command input unit, The audio data includes at least one voice signal, the caption file includes a character corresponding to the voice signal, and the character is added with graphic font information in a predetermined language, A font file is further stored in the memory card, and the font file is stored in the RAM through the card interface. And the controller controls to output the character according to the font information by referring to the font file when outputting a voice signal and a character. The method of claim 6, And the font information includes at least one of fonts of characters, styles of characters, sizes of characters, and attributes of characters. The method of claim 6, And an FM transmitter for transmitting the voice signal through a predetermined frequency to an FM radio receiver. In the method for creating a caption file displayed by the MP3 player through caption editing means, (a) selecting audio data including at least one voice signal; and (b) generating a caption file by inputting a graphic frame composed of an image corresponding to the voice signal. The method of claim 1, Caption file generation method for MP3 player, characterized in that the graphics frame is created in a bitmap method. According to claim 1, The caption file has a structure including a caption file information unit and a data unit, The caption file information unit includes at least one of a caption program identifier, a caption program version, a user name, a creation date, a creation method, and an error check code. And the data unit includes a graphic frame type, graphic frame data, and graphic frame display information. A card interface for accessing a memory card storing audio data and caption files, a RAM for temporarily storing the audio data and the caption file, a command input unit for inputting a user's command, and an operating system for reproducing the audio data and caption file A ROM, a codec unit for converting the audio data into a voice signal, a converter for converting the output signal of the codec unit into an analog signal, an audio driver for outputting the analog signal, and a graphic frame of the caption file to be displayed on the LCD. In the MP3 player comprising a control unit for controlling the output of the audio signal and the graphic frame in synchronization with the audio signal and the graphic frame when a playback command is input through the LCD driving unit, the command input unit, The audio data includes at least one voice signal, and the caption file includes a graphic frame composed of an image corresponding to the voice signal. The method of claim 12, And an FM transmitter for transmitting the voice signal through a predetermined frequency to an FM radio receiver.