KR100839695B1 - Apparatus and method for ripping in digital recorder - Google Patents

Abstract

The present invention relates to a ripping apparatus and method for a digital recorder for ripping graphic data recorded on a CD to another recording medium. The ripping apparatus and method of the digital recorder according to the present invention are characterized by controlling the normal ripping operation of the graphic data recorded on the CD by controlling the decoding of the graphic data recorded on the CD and then encoding them again. For this control, the present invention decodes the graphic data contained in the subcode channel of the CD. After decoding, the graphic data stored in the memory is encoded in MP4 form by one frame and stored in the hard disk. With this control, the present invention can control the normal ripping operation of the graphic data, so that it is possible to rip the graphic data as well as the audio data contained in the CD. Accordingly, the present invention has the effect that users can store and reproduce various types of data stored in the CD on the hard disk.

Digital Recorder, Graphic Data, Subcode Channel, Rip

Description

Apparatus and method for ripping in digital recorder}

1 illustrates a control configuration for ripping CD graphic data of a conventional digital recorder.

2 is a control block diagram for ripping CD graphic data of a digital recorder according to the present invention.

Explanation of symbols on the main parts of the drawings

20: demodulation and error correction unit 21: MP3 encoder

22: control and display decoding unit 23: hard disk

24: display unit 25: control unit

26 MP4 encoder

The present invention relates to a digital recorder, and more particularly, to a ripping apparatus and method of a digital recorder for ripping graphic data recorded on a CD to another recording medium.

The modern is the digital age. Mobile phones, landlines, high-speed Internet communications, DVD players, and MP3 players commonly found around us are digital outputs. In addition, the digital wind is affecting home appliances in recent years. Due to these effects, video signals are displayed by digital broadcasting on televisions and settops used in homes and businesses.

Digital broadcast refers to a television broadcast that compresses and sends out a television signal in a digital form in which information signals are encoded and recorded. Conventional analogue television broadcasting can only carry one image in one radio wave, and voice has to be transmitted in another radio wave. On the other hand, since digital broadcasting can carry a plurality of video, audio, etc. in one radio wave and can compress information without degrading the quality, 4 to 8 channels in the frequency band of the conventional analog broadcasting channel Can be set. Accordingly, the digital broadcast can include various signals in addition to the television broadcast signal.

Recently, a digital recorder capable of receiving and watching or recording the digital broadcast is commercially available. The digital recorder uses a storage medium such as a DVD and a hard disk. The digital recorder is configured to reproduce CD data for compatibility with a CD (CD), which is an existing recording medium.

Accordingly, the digital recorder is configured to enable playback of CD data, playback and recording of DVD data, and reproduction and recording of auxiliary storage data such as a hard disk. In addition, as the capacity of the hard disk is expanded, many users rip CD data to a secondary storage device such as a hard disk.

1 is a control block diagram for ripping CD graphic data to a recording medium such as a hard disk in a conventional digital recorder.

The bit data read from the disk is demodulated and error corrected by the demodulation and error correction unit 10, and the MP3 encoder 11 converts the data read from the disk into a file format that can be processed by a computer. To do the job.

Therefore, the disk read data encoded by the MP3 encoder 11 is recorded on the hard disk 13, and the user can then obtain the same effect as playing the disk by using the data ripped on the hard disk 13. .

The demodulation and error correction unit 10 reproduces demodulation and error correction data, and the control and display decoding unit 22 decodes the control data and the image data. The decoded control data is provided to the control unit 25, and the decoded image data is provided to the display unit 14 to display on the screen.

The ripping method of the conventional digital recorder operating as described above has been exposed to the following problem.

As the CD evolved, it left extra space for graphics information such as audio. The audio CD has a separate byte for signal control in each sector and consists of 8 bits (= 8 subcode channels = 4MB of space each) of P, Q, R, S, T, U, V, and W. have. This bit is called a subcode channel. Of these, channels R through W contain graphic data. When the graphic data is decoded, a simple series of still images can be displayed on the screen.

Recently, song lyrics and related still images are stored in subcode channels of R to W and used as karaoke discs. Especially in certain areas, these functions are basically configured.

However, there is a problem that the data recorded in the subcode channel is not recognized as normal graphic data even when the MP3 encoder 11 controls the encoding operation during the ripping operation of the disc data. That is, in the ripping method of the conventional digital recorder, when ripping CD data to the hard disk 13, only audio data is extracted and a ripping operation is performed. Therefore, the conventional ripping method has a problem that it is not possible to utilize the graphic data stored in the subcode channel of the CD when reproducing the data ripped on the hard disk 13.

Accordingly, an object of the present invention is to provide a ripping apparatus and method for a digital recorder for controlling ripping so that CD graphic data can be recognized.

A ripping apparatus for a digital recorder according to the present invention for achieving the above object comprises: first encoding means for performing encoding of audio data among data read from a disc; Decoding means for performing decoding of graphic data among data read from the disk; Second encoding means for encoding the decoded graphic data; And storage means for storing the encoding data of the first encoding means and the second encoding means.

The second encoding means of the present invention is characterized by encoding the decoded graphic data by one frame.

The second encoding means of the present invention is characterized by encoding the graphic data in the MP4 format.

The data encoded by the second encoding means of the present invention is characterized in that the data contained in the subcode channel of the CD.

The first encoding means of the present invention is characterized by encoding audio data in MP3 format.

The storage means of the present invention is characterized in that the hard disk.

A ripping method of a digital recorder according to the present invention for achieving the above object comprises: a first encoding step for performing encoding of audio data among data read from a disc; A decoding step for decoding the graphic data from the data read from the disk; A second encoding step for encoding the decoded graphic data; And a storing step of storing the encoding data of the first encoding step and the second encoding step.

Hereinafter, exemplary embodiments of a ripping apparatus and method of a digital recorder according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram for ripping control of a digital recorder according to the present invention.

The digital recorder of the present invention provides a ripping control configuration for ripping a signal reproduced from a CD to a hard disk. To this end, the digital recorder of the present invention includes a configuration for reproducing a CD. And a ripping configuration for storing the reproduced CD data in an auxiliary memory device such as a hard disk. It also controls the recording and reproducing of the DVD, the inflow and signal processing of video signals / audio signals from the outside, and the configuration for receiving and signal processing of broadcast signals. Of all these configurations, the present invention will be described only for the configuration of ripping data of a CD to a hard disk which is directly related to the present invention.

The digital recorder of the present invention includes a demodulation and error correction unit 20 for demodulating and error correcting digital data (bit data) read from a CD. And an MP3 encoder 21 for extracting an audio signal from the signal processed by the demodulation and error correction unit 20 and converting the audio signal into data in a file format that can be processed by a computer. The audio signal encoded by the MP3 encoder 21 is stored in a predetermined area (user designated audio storage area) of the hard disk 23.

In addition, the digital recorder of the present invention includes a control and display decoding unit 22 for decoding data for control and graphic data from the signal passing through the demodulation and error correction unit 20, and the control and display decoding unit 22. A control unit for controlling the signal display of the display unit 24 according to the control information decoded by the control unit), and controlling a control operation required for ripping CD graphic data to the hard disk, such as encoding operation control of the MP4 encoder 26. It is comprised including 25. Although not shown in the drawing, the control and display decoding unit 22 includes a memory for temporarily storing the decoded data and first outputting the first input data according to the principle of FIFO (First in first out). The signal output from the memory is scattered on the display unit 24, and the user is provided with signals such as still images and lyrics.

The digital recorder of the present invention includes a configuration for encoding the graphic data recorded in the subcode channel among the digital data read out from the CD and storing it in the hard disk 23. To this end, the present invention includes an MP4 encoder 26 that sequentially decodes and decodes graphic data stored in the internal memory decoded by the control and display decoding unit 22 one frame at a time. The graphic data encoded by the MP4 encoder 26 is stored in a predetermined area of the hard disk 23 (area set to be associated with data encoded and stored in the MP3 encoder 21).

In addition, although the MP3 encoder 21 and the MP4 encoder 26 are separately configured in the embodiment of the digital recorder of the present invention, the MP4 encoder 26 includes an MP3 encoder function for encoding audio data. Doing. Therefore, the MP3 encoder 21 and the MP4 encoder 26 may be included and represented by the MP4 encoder.

According to the present invention having the above configuration, the audio data recorded on the CD is stored in the hard disk after encoding using an MP3 encoder as in the prior art. In the present invention, the graphic data contained in the CD is first controlled to be decoded and then encoded by the MP4 encoder and stored in the hard disk. The operation is performed as follows.

The digital data read out from the disk is subjected to signal processing in which the demodulation and error correction unit 20 performs error correction on bits in which demodulation and error have occurred with the original signal.

Among the reproduced signals processed as described above, audio data is input to the MP3 encoder 21, and the MP3 encoder 21 encodes the inputted reproduction signal. The audio data encoded by the MP3 encoder 21 is stored in the hard disk 23. In this way, a ripping operation is performed to convert the audio data recorded on the CD into a file format that can be processed by a computer and to store it on a hard disk.

On the other hand, graphic data recorded on the subcode channel of the CD disc is not normally ripping control despite the above ripping operation.

Therefore, the control and display decoding unit 22 decodes graphic data, which is not audio data, among the reproduction signals in which the demodulation and error correction unit 20 has corrected the error. Therefore, the graphic data recorded in the sub code channel of the CD disc is decoded into the original signal by the decoding operation. The decoded graphic data is temporarily stored in the built-in memory of the control and display decoding unit 22.

The graphic data stored in the memory is provided to the MP4 encoder 26 by one frame data so that an encoding operation is controlled, and the encoded graphic data is stored in the hard disk 23, thereby storing the graphic data stored in the CD. Also, the ripping operation is normally stored in the hard disk. At this time, the storage of the encoded graphic data on the hard disk 23 is stored in association with the audio data stored on the hard disk described above.

In the above process, the normal ripping operation of the audio data and the graphic data recorded on the CD is performed. Then, when the graphic data is reproduced in association with the audio data stored in the hard disk 23, the graphic data is reproduced on the screen during the output of the audio data. As the signal is displayed, information such as still images and lyrics is provided.

As described above, the ripping apparatus and method of the digital recorder according to the present invention is characterized by controlling the normal ripping operation of the graphic data recorded on the CD by controlling the decoding of the graphic data recorded on the CD and then encoding the data again. do. For this control, the present invention decodes the graphic data contained in the subcode channel of the CD. After decoding, the graphic data stored in the memory is encoded in MP4 form by one frame and stored in the hard disk. With this control, the present invention can control the normal ripping operation of the graphic data, so that it is possible to rip the graphic data as well as the audio data contained in the CD.

The above-described preferred embodiment of the present invention is disclosed for the purpose of illustration, and may be applied to ripping graphic data contained in a subcode channel of a CD. Therefore, those skilled in the art will be able to improve, change, substitute or add other embodiments within the technical spirit and scope of the present invention disclosed in the appended claims.

The ripping apparatus and method of the digital recorder according to the present invention as described above are characterized by controlling the normal ripping operation of the graphic data contained in the CD by controlling the decoding of the graphic data contained in the CD and then encoding the same again. do. For this control, the present invention decodes the graphic data contained in the subcode channel of the CD. After decoding, the graphic data stored in the memory is encoded in MP4 form by one frame and stored in the hard disk. With this control, the present invention can control the normal ripping operation of the graphic data, so that it is possible to rip the graphic data as well as the audio data contained in the CD. Accordingly, the present invention has the effect that users can store and reproduce various types of data stored in the CD on the hard disk.

Claims (7)

MP3 encoding means for encoding audio data read out from the CD (CD) into MP3 data; Decoding means for decoding graphic data read from the subcode channel of the cd; MP4 encoding means for encoding the decoded graphic data into MP4 data; And Storage means for storing the MP3 data encoded by the MP3 encoding means in a file format that can be processed by a computer, and storing the MP4 data encoded by the MP4 encoding means in a predetermined area in association with the file. Ripping apparatus for a digital recorder, characterized in that configured. The method of claim 1, The MP4 encoding means, the ripping apparatus of the digital recorder, characterized in that for sequentially encoding the decoded graphic data by one frame. delete delete delete delete Encoding audio data read out from the CD (CD) into MP3 data; Decoding the graphic data read from the subcode channel of the CD and encoding the MP4 data; And And storing the encoded MP3 data in a file format that can be processed by a computer, and storing the encoded MP4 data in association with the file.

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