KR20030076055A - Language learning device with bilingual caption - Google Patents

Abstract

PURPOSE: A language learning machine having a bilingual caption function is provided to improve the learning effect by displaying first and second letter information on a displaying window according to a selection of a user. CONSTITUTION: An interface unit(1) receives data from outside. A memory(2-2) stores the received data. A CD(Compact Disk) driving unit(2-1) reads a CD which records learning information. A decoder(3) decodes compressed data. A bit detecting unit(4) detects bits of the decoded data. A demodulating unit(5) decodes 14-bit format data into 8-bit format. An error processing unit(6) restores errors in data. A channel distributer(7) divides one streamed data into right and left audio channels. Two DAC(Digital-to-Analog Converter)/LP(Low Pass) filters(8-1, 8-2) convert a digital signal into an analog signal to filter it. A clock regenerator(9) regenerates a clock from a detected signal line. A decoding control and display unit(11) decodes letters data received from the demodulating unit(5) to display it on the displaying window. A letters selecting unit(12) receives a language selection of a user to control the decoding control and display unit(11).

Description

Language Learner for 2 Language Subtitles {LANGUAGE LEARNING DEVICE WITH BILINGUAL CAPTION}

The present invention relates to a language learner with a caption function, and more particularly, to a language learner that a user can select one of two languages and view it as captions when playing voice information.

In the case of the conventional language that has a CD playback function, only one language is supported. Such a prior art is disclosed in Korean patent applications 2001-0077635, 2001-0061893 and the like. However, since the conventional language shows only the same language subtitles as the voice while reproducing the voice data, there is a problem that a user must look up a dictionary separately if the user does not understand the contents of the corresponding language subtitles.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to selectively display a language subtitle identical to a reproduced voice and a language subtitle used by a user by using a known CD format data processing technique and data compression technique. The present invention provides a language learner for storing language and voice information for language learning in an internal memory so that it can be used without a cassette tape or a CD.

1 is a block diagram of a bilingual subtitle language learner according to the present invention;

2 is a block diagram showing a CDP format data format used in the present invention.

For this purpose, the present invention provides a CDP for inputting CDP format data including voice information for language learning, first text information in the same language as the voice information, and second text information in a language different from the first text information. A format data input unit; A voice output unit for outputting voice information for language learning; A text output unit configured to output one of the first text information and the second text information; A character selector that allows the language learner to select one of the first character information and the second character information; CDP format data inputted from the CDP format data input unit and CDP format data for sending the voice information to the voice output unit and inputting the character information selected by the language learner to the character output unit by inputting the selection in the character selection unit by the language learner as an input. It provides a bilingual subtitle language learner comprising a processor.

The present invention also provides a bilingual subtitle language learner further comprising an interface for receiving the CDP format data from an external server, and a memory for storing the received CDP format data.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a bilingual subtitle language learner according to the present invention, which includes an interface for receiving data from the outside (1), a memory for storing the received data (2-2), and learning information. A CD driver (2-1) capable of reading the recorded CD, a decoder (3) for decoding the compressed data, a bit detector (4) for detecting the bits of the decoded data, and 8-bit data in a 14-bit format. A demodulator 5 for decoding to a format, an error processor 6 for recovering errors in data, a channel divider 7 for dividing data in one stream into left and right audio channels, converting a digital signal into an analog signal, Two digital to analog converter (DAC) / low pass (LP) filters 8-1, 8-2 for filtering, a clock regenerator 9 for reproducing a clock from the detected bit signal sequence, a synchronous detection and timing section 10 ), Decode the character data received from the demodulator The decoding control and display unit 11 displayed on the sight glass, and the character selection unit 12 for receiving the user's language selection input control the decoding control and display unit 11.

Hereinafter, each said component is demonstrated.

The language learner according to the present invention reproduces the data stored in the memory provided in the CD or inserted into the CD drive unit. At the time of external data input, learning data transmitted from a device equipped with an auxiliary memory device such as a user PC is stored in the memory 2-2 through the interface 1. On the other hand, data stored in the memory (2-2) of the two-language subtitle language learner according to the present invention can be implemented to be moved back to the auxiliary storage device of the user PC through the interface (1) more efficient learning data management Is possible.

The interface 1 may be configured by using devices capable of inputting and outputting data in a wired or wireless manner for exchanging data with a user PC. For example, it may be a serial port, a parallel port, a USB, an IEEE1394, a Bluetooth, an infrared port, or a wireless LAN. Such wired and wireless data exchange means may be, for example, manufactured in a modular manner and mutually mounted to the user PC and the language learner of the present invention.

The decoder 3 converts a file compressed by an MP3 method or the like into original digital audio data and transmits the converted file to the bit detector 4. The compression method will be described later.

The decoded data is output to the demodulator 5 through the bit detector 4. The demodulator converts the data encoded by the EFM (Eight to Fourteen Modulation) method back to the original 8-bit format.

The clock regenerator 9 is for regenerating a clock from the bit string output by the bit detector. The synchronous detection and timing unit 10 finds the synchronization signal of the frame and informs the start and end of the frame and the reference to be used throughout the system. It is for generating a clock.

The error processing unit 6 recovers lost data due to errors in compact disc manufacturing or damage to the surface of the disc.

The channel distributor 7 divides the data of one continuous stream into a left channel and a right channel and outputs the same to the DAC / LP filter.

The DAC (Digital / Analog Converter) / LP (Low Pass) filters (8-1, 8-2) convert digital signals into analog voice signals and filter out those parts of the voice signals with very high frequencies outside the audio band. Then output to the amplifier.

The decoding control and display unit 11 receives the character data from the demodulator and decodes the character data into a character signal, and displays the character information in the corresponding language on the subtitle display window according to the input of the character selector 12. The character selector 12 may be implemented such that, for example, the language learner selects one of the voice data language subtitles and the user language subtitles using a toggle type key.

Next, the format and compression method of data used in the present invention will be described. The data reproduced by the bilingual subtitle language learner according to the present invention is compressed using a known compression method such as MP3, WMA, AAC, etc. in order to reduce the capacity of audio and subtitle data in a CDP standard format.

The CDP standard format is in accordance with the Red Book, a specification for compact discs and compact disc players developed in partnership by Sony, Philips and Polygram.

MP3 is one of the high-quality audio compression technology defined by MPEG1, and it can compress and transmit 50 times the music of "high quality" while maintaining the sound quality close to the CD record. WMA (Windows Media Audio) is a next-generation audio technology that offers better compression and sound quality than MP3, as well as streaming algorithms and security algorithms for copyright protection. The MPEG2 AAC (Advanced Audio Coding), a multi-channel audio coding method established by the MPEG Audio Group in 1997, has a sampling frequency band of 48 kHz and a data rate of 320 Kbps, which is 30% lower than the MP3, which has recently spread worldwide. It's high enough to deliver high quality sound similar to DVD's. The data compression method that can be processed by the language learner according to the present invention is not limited to the above methods.

2 shows the CDP standard format used in the present invention. This represents one frame of data, and one frame consists of a total of 588 channel bits. Voice data is recorded in the 0th to 11th bits, voice data language character data in the 16th to 27th bits, and user language character data in the 32nd to 43rd bits, respectively, and each data is a 4-bit parity bit. Are distinguished. In FIG. 2, bits 49 and below are not used in the embodiment of the present invention, but may be used to record image data and the like.

As described above, according to the present invention, learning can be performed while the first character information or the second character information is viewed on the subtitle display window according to the user's selection, and the learning data can be updated at any time using an online server. It works.

Claims (6)

In a two-language subtitle language learner capable of outputting a voice for language learning and a character in the same language as the voice and a character in a language different from the language according to a request of the language learner, A CDP format data input unit for inputting CDP format data including voice information for language learning, first text information in the same language as the voice information, and second text information in a language different from the first text information; Voice output unit for outputting voice information for the language learning, A text output unit configured to output one of the first text information and the second text information; A text selection unit for allowing the language learner to select one of the first text information and the second text information; The voice information is sent to a voice output unit by inputting the CDP format data input from the CDP format data input unit and a selection in the character selection unit by the language learner, and the character information selected by the language learner is transmitted. And a CDP format data processing unit for sending a text output unit. The method of claim 1, And the CDP format data input unit comprises an interface for receiving the CDP format data from an external server, and a memory for storing the received CDP format data. The method according to claim 1 or 2, And the CDP format data input unit comprises a CD drive unit for a compact disc containing the CDP format data. The method according to claim 1 or 2, And the CDP format data is in a compressed form, and the compressed CDP format data is input to the CDP format data processor through a decoder for decoding the CDP format data. The method of claim 3, wherein And the CDP format data is in a compressed form, and the compressed CDP format data is input to the CDP format data processor through a decoder for decoding the CDP format data. The method of claim 5, And the second text information is a language commonly used by the language learner.