KR100209197B1 - The data copy method and apparatus for md/cd double deck - Google Patents

Abstract

The present invention relates to a method and an apparatus for copying information of an MD / CD double deck, in which when a piece of music recorded on each track of a CD is recorded in the MD, The information such as the number of tracks and the track time of the contents of the table of the CD is converted into a format suitable for the MD and copied.

According to the present invention, a table content of a disc is set in a user table content area of an MD and a variable value of each track and each track is determined. Writing the cluster / sector number of the current MD to an arbitrary start address of the contents of the user table and increasing an address variable value if the music piece is played back in an arbitrary track of the CD after setting the contents of the table; Setting a track / sector number of the current MD in an end address of the contents of the user table and setting the track to a track position of a start address of contents of the user table and increasing an address variable value; If the track is the last track number, the incremented address is set in the empty space of the contents of the user table, and if the track is not the last track number, the variable number of the track and the track number is incremented, and the process is repeated.

Description

MD / CD double deck information copying method and apparatus.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to information copying in a compact disc (CD) player having both a compact disc (MD) and a compact disc (CD) player. More specifically, the present invention relates to information recorded on a compact disc (MD) / CD (Compact Disc), which converts all information such as the number of tracks and track time in the table contents (TOC) area of the compact disc into a mini disc format, A method of copying information of a double deck, and an apparatus.

In general, a portable mini disc player or a compact disc player, which has been recently put on the market, is constructed so as to be able to reproduce only the corresponding disc, so that the portable mini disc player and the compact disc player are not only very small 2. Description of the Related Art As a device for reproducing contents recorded on a mini disc and a compact disc using an optical pickup while loading and rotating a compact disc, miniaturization is required for convenience of carrying.

However, in the conventional MiniDisc and CompactDisc player, when a user wants to record a song recorded on a compact disc to a MiniDisc via a MiniDisc player, a line is connected to the CompactDisc player and the MiniDisc player To record.

Even in the recording method, when it is desired to record each piece of music recorded on each track of the compact disc on the mini disc, the music for each of the tracks is melted on one track of the mini disc.

In other words, for example, when ten songs recorded on 10 tracks of a compact disc are recorded on a mini disc, ten songs are recorded on one track of the mini disc.

In the compact disk player, the increment (number of tracks) of each track can be known. However, since the MiniDisc player can not determine the increase of the track, 10 tracks of the compact disk are recorded in one track of the MiniDisc .

Therefore, when a user wishes to listen to a song through the MiniDisc by copying from the compact disc, the listener can not listen to the desired song through the MiniDisc and listen to 10 songs that are inevitably copied and recorded from the compact disc in order There is a problem that only the recording and reproducing function is performed.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a mini disc player for a compact disc player, which is capable of recording and playing back information recorded on a compact disc through a simple method, A method of copying information of a CD double deck, and an apparatus.

It is another object of the present invention to provide a compact disc readable recording medium which reads information such as the number of tracks and track time of a table content area of a compact disc into a mini disc format when copying information recorded on a compact disc to a mini disc, So that only desired songs can be selected and heard in the recorded tracks.

1 is a block diagram of an embodiment of an information copying apparatus in an MD / CD double deck of the present invention.

2 shows the table contents (TOC) of the compact disc (CD) of Fig.

FIG. 3 is a view showing a table content (TOC) of the mini disk MD of FIG. 1;

4 is a signal flow diagram illustrating a process of recording information of a compact disc in an MD / CD double deck of the present invention to a mini disc.

Description of the Related Art [0002]

100: system control unit 101: first servo unit

102: ADIP decoder unit 103: first motor

104: mini disc 105: first optical device

106: first high frequency amplifier unit 107: compact disk decoder unit

108: summing interleave unit 109: compact disc decoder unit

111: analog / digital conversion unit 112: compression unit

114: shock proof part 115: compact disc chrome part

116: sum de-interleave unit 117: compact disc encoder unit

According to an aspect of the present invention, there is provided a method of copying information of an MD / CD double deck, comprising: reading contents of a table of a compact disk and a mini disk in a disk copy mode, And determining a value of the number of songs and an address variable; Writing the cluster / sector number of the current MiniDisc to an arbitrary start address of the contents of the user table and incrementing the determined address variable value by arbitrary bytes if the arbitrary song of the compact disc is reproduced after setting the contents of the table; If the arbitrary music piece has been reproduced, the cluster / sector number of the current mini disk is written to the arbitrary end address of the contents of the user table, the arbitrary music is set to the track position of the arbitrary start address of the contents of the user table, And repeatedly performing the process of incrementing by arbitrary bytes, thereby copying the contents recorded on the compact disc.

According to another aspect of the present invention, there is provided an information copying apparatus for an MD / CD double deck, comprising: compression means for compressing an audio signal reproduced from a compact disc player at a predetermined rate; A shock proof means for storing the audio data compressed by the compression means and the reproduction data of the mini disk in a data RAM to prevent a negative interruption; A compact disc encoder means for encoding the audio data compressed by the shock proof means into a compact disc format; A sum de-interleaving means for separating and outputting the encoded audio data and an error correction code; A compact disc encoder means for encoding the separated data into a compact disc format and recording the encoded data on a mini disc; Address pre-groove encoder means for recording the time data provided from the servo means in each track of the mini disk; A compact disc decoder means for decoding audio data read from a mini disc via an optical device; Sum interleaving means for synthesizing the decoded audio data and an error correction code; A compact disc decoder means for decoding the synthesized audio data in a compact disc chroma format and transmitting the decoded audio data through a shock proof means; Expansion means for expanding the transmitted audio data at a predetermined rate; And digital / analog converting means for selectively converting the stretched audio data and the audio data of the compact disc player into analog signals by the system control means and transmitting them.

As a result, when copying the information recorded on the compact disc to the mini disc, information such as the number of tracks and track time in the table content area of the compact disc is converted into a format suitable for the mini disc, There is an advantage that can be selected and listened to.

There may be a plurality of embodiments of the present invention, and the preferred embodiments will be described in detail below.

And it is to be understood that the objects, features and advantages of the present invention can be better understood through the preferred embodiments.

1 is a block diagram of an embodiment of an information copying apparatus in an MD / CD double deck of the present invention.

According to the present embodiment, an analog / digital converter 111 for converting an audio signal of a compact disc 203 input through an input terminal 110 into a digital signal and outputting the digital signal; A compression unit 112 for compressing and outputting the audio data obtained by the analog-to-digital conversion unit 111 in 1/5; A shock proof part 114 for preventing audio discontinuity by storing the audio data compressed through the compression part 112 and the reproduction data of the mini disc 104 in the data RAM 113 to prevent the audio data from being impacted, Wow; A compact disc encoder unit 115 for encoding the compressed audio data input through the shock proof unit 114 in a compact disc format and outputting the compressed audio data; A sum de-interleave unit 116 for synthesizing and outputting the audio data encoded through the compact disc encoder unit 115 and an error correction code; A compact disc encoder 117 for encoding the synthesized data in a compact disc format and recording the encoded data on a track of the mini disc 104; An address in pre-groove encoder section 118 which encodes time data input from the outside and writes to each track of the mini disk 104; First and second optical devices 105 for irradiating light beams to the mini disc 104 and the compact disc 203 on which digitized music information and address data are recorded in units of frames and receiving and outputting the reflected light therefrom, , 204; First and second high frequency amplifying units (106, 205) for amplifying and outputting high frequency signals obtained from the first and second optical devices (105, 204) to a set level; A compact disc decoder 107 for decoding and outputting audio data from a high frequency signal amplified by the first high frequency amplifier 106 of the mini disc player and generating a focus error signal and a tracking error signal; A summation interleave unit 108 for synthesizing the audio data decoded by the compact disc decoder unit 107 and an error correction code; A compact disc decoder unit 109 for decoding the synthesized audio data in a compact disc chroma format and transmitting the decoded audio data through the shock proof unit 114; A data decompression unit 120 for decompressing and outputting audio data transmitted through the shock proof unit 114 in 1/5; A pre-groove decoder unit 102 which is an address for reading and outputting time data recorded on each track of the mini disk 104; A waveform processing unit for removing a direct current component and a noise from the high frequency signal amplified by the second high frequency amplifying unit 205 of the compact disc player and outputting a phase correction and waveform shaping and outputting a focus error signal and a tracking error signal, (206); An EFM (Eight to Fourteen) demodulator 207 for converting a 14-bit digital signal processed and inputted by the waveform processor 206 into 8 bits and outputting the converted digital signal; An error-correcting-interleaved decoder unit 209 for error correction, demodulation and output of audio data input from the EFM demodulation unit 207; The error-deinterleaved decoder unit 209 converts the audio data of the error-correction-coded compact disc and the audio data of the mini disc input from the data decompression unit 120 into analog signals and outputs them through the output terminal 211 A digital-to-analog converter 210 for converting the analog signal into digital data; A subcode reproducing unit 208 for detecting and reproducing a subcode by referring to a data string input from the EFM demodulator 207; A key operation unit 119 for selecting an operation function of the compact disc player and the mini disc player; The mini disk 104 and the compact disk 203 to be reproduced by referring to the time data braked by the pre-groove decoder unit 102 and the subcode detected by the subcode reproducing unit 208, A control signal for selectively moving the first and second optical devices 105 and 204 and the mini disc 104 and the compact disc 203 according to a key signal from the key operation unit 119 A system controller 100; The control signal generated by the system controller 100 and the focus error signal and the tracking error signal input from the compact disc decoder 107 and the waveform processor 206 are input to the first and second optical devices 105, The first and second servo units 101 and 202 for adjusting the focus and tracking through the first and second motors 204 and 202 and rotating the mini disc 104 and the compact disc 203 through the first and second motors 103 and 202, ), And (201).

FIG. 2 is a view showing the table contents (TOC) of the compact disc (CD) of FIG. 1. As shown in FIG. 2, when disc copying is started through the key operation unit 119 The mini disk 104 and the compact disk 203 are rotated through the first and second servo units 101 and 201 and the table of the compact disk 203 through the first and second optical devices 105 and 204 while rotating the mini disk 104 and the compact disk 203. [ (ST101), (ST102) of reading the table of contents (TOC) and the table contents (TOC) of the mini disk 104; After reading the contents of the table, the first index and the last index indicating the number of tracks in the contents of the compact disc 203 are read, and the first track number (First TNO) and the last track number (Last TNO) of the user table contents (ST103), (ST104); The first start address 76 to be written after the index setting is set in the empty pointer P-EMPTY of the user table content UTOC and the corresponding number of songs B to be copied, the address variable value A, Determining and setting a value C (ST105), (ST106); A step (ST107) of searching for an arbitrary music reproduction of the compact disc (203) after setting the variable value; If the start of the random music piece is started, the cluster / sector number of the current MiniDisc 104 is set to a first start address 76 of the user table contents (UTOC) and an arbitrary start address 76 + A (ST108), (ST109), and (ST108), incrementing the address variable value A by 4 bytes; A step (ST110) of searching for a reproduction completion of a random music piece of the compact disc 203 after increasing the address variable value (A); If the reproduction of the arbitrary music piece is completed, the cluster / sector number of the current MiniDisc 104 is written into 3 bytes of the end address increased by 4 bytes with respect to the first start address 76 of the user table contents (UTOC) (ST111-ST113) of setting a first track number (P-TNO1 + C) indicated by the first start address 76 of the user table contents (UTOC) and increasing the variable value (A) of the address by 4 bytes ; A step (ST114) of retrieving whether or not any music piece after incrementing the address variable value (A) is equal to the last track number (Last TNO) set in the user table contents (UTOC); If the search result is not the last track number (Last TNO), repeating the process after step ST106 by incrementing the next track number and the track number variable value C (ST115); (ST116) if the arbitrary tune is the last track number (Last TNO), setting a 4-byte incremented address for the first start address 76 to an empty pointer (P-EMPTY) of the user table contents (UTOC) .

A preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 and 3. FIG.

When the user operates the key operation unit 119 to select and reproduce a compact disc player or a mini disc player, the system control unit 100 firstly drives the first and second servo units 101, which are configured in the mini disc player and the compact disc player, , And (201).

The first and second servo units 101 and 201 drive the first and second motors 103 and 202 in response to a control signal provided from the system control unit 100, The mini disc 104 and the compact disc 203 are reproduced through the first and second optical devices 105 and 204 while rotating the compact disc 203 and the compact disc 203 and the compact disc 203.

That is, as is well known, the first and second optical devices 105 and 204 include a laser light emitting element for irradiating a light beam onto the mini disc 104 and the compact disc 203, A high frequency signal detected from the light receiving elements of the first and second optical devices 105 and 204 is transmitted to the flat surface of the mini disk 104 and the compact disk 203 And becomes dark in the pit portion, and is output in the form of an analog signal depending on the presence or absence of the pit Pit.

That is, the data is determined according to the presence or absence of a pit in the mini disc 104 and the compact disc 203, and is output.

The high frequency signals detected by the first and second optical devices 105 and 204 are amplified up to a level set by the first and second high frequency amplifying units 106 and 205 to be supplied to the compact disk decoder unit 107, And the waveform processing unit 206, respectively.

The compact disc decoder 107 decodes the table contents (TOC) and the audio data as shown in FIG. 4 in the high frequency signal amplified by the first high frequency amplifier 106 of the mini disc player, To the system control unit 100 via the first servo unit 101 and supplies the audio data to the summing interleave unit 108 and also generates a focus error signal and a tracking error signal to the first servo unit 101 .

The first servo unit 101 adjusts focus servo on the surface of the MiniDisc 104 and focus servo of the first optical device 105 and information recording / reproducing beam on the pit array on the surface of the MiniDisc 104 And controls the accurate focus and tracking by referring to the tracking error signal and the focus error signal of the compact disk decoder 107.

The sum interleave unit 108 combines the audio data error correction code decoded and input by the compact disc decoder unit 107 and supplies the resultant audio data error correction code to the compact disc decoder unit 109. The compact disc decoder unit 109, Decodes the synthesized audio data into a format of a compact discrom, and provides the data to the data expanding unit 120 through the shock proof unit 114, which will be described later.

The high-frequency signal amplified and detected by the second high-frequency amplifying unit 205 of the compact disc player is removed from the DC component and the noise in the waveform processing unit 206 and is divided into 1 and 0 by phase correction, EFM demodulator 207 and a part of the detected signal is calculated according to the detection method of the focus error and tracking error signal and the calculated focus error signal and tracking error signal are input to the second servo unit 201. [

The second servo unit 201 is constructed in the same manner as the first servo unit 101 to precisely control the focus and tracking of the second optical device 204.

The EFM demodulator 207 converts the 14-bit digital data input from the waveform processor 206 into 8-bit data and provides the data to the subcode decoder 208 and the error de-interleaver decoder 209 .

In other words, in general, the compact disc 203 is divided into 8 bits + 8 bits by a 16-bit signal and converted into 14 bits + 14 bits for recording in order to prevent the minimum unit length of the pits from becoming very short.

Therefore, in order to demodulate it into the original signal, the above-described EFM demodulator 207 converts 14-bit data input from the waveform processor 206 into 8-bit data and outputs the data.

3, which is recorded in the lead-in area of the compact disc 203, with reference to the data stream input from the EFM demodulation unit 207 A subcode such as the number of songs, the number of songs, the time of each song, the total time, the first part of each song, and the address of an index part, is provided to the system control unit 100.

The error de-interleaved decoder unit 209 performs error correction and demodulation of the audio data input from the EFM demodulator 207 and outputs the error-corrected and demodulated audio data to the output terminal 211 through the digital / analog converter 210 .

In this manner, in the mini disc player and the compact disc player that operate, the user can copy the information recorded on the compact disc 203 through the key operation unit 119 in order to copy and reproduce the information recorded on the mini disc 104, The system control unit 100 stores the table contents (TOC) recorded in the read-in area of the compact disk 203 and the mini disk 104 in the subcode playback unit 208 and Is read through the compact disc decoder 107 (ST101) (ST102).

The first index in the table of contents (TOC) of the compact disc 203 is set to the first track number (First TNO) of the user table contents (UTOC) of the MiniDisc 104 Step ST103) and the last index is set to the last track number (Last TNO) of the user table contents (UTOC) (step ST104).

After the index is set, the first start address 76 to be written is set to the empty pointer P-EMPTY of the user table contents UTOC (step ST105), and the number of copies B to be copied is set to 1 And sets the address variable value A and the track number variable value C to 0 (step ST106).

When the first track of the compact disc 203 is copied (step ST107) in this state, the cluster / sector number of the current MiniDisc 104 is added to the first start address 76 of the user table contents (UTOC) (Step ST108), and the address variable value A is incremented by 4 bytes (step ST109). The address variable A is incremented by 3 bytes of the first start address (76 + A)

If it is determined that the first song of the compact disk 203 has been copied (ST110), the cluster / sector number of the current mini disk 104 is set to the first start address of the user table content (UTOC) (In other words, 3 bytes of 77 bytes, which is increased by 4 bytes from the address 76), and writes 0 to the link pointer (Link-P) of 1 byte (step ST111 ).

Thus, after writing the cluster / sector number in the user table content (UTOC), the first track (B) is written to the first track number (P-TNO1 + C (Step ST112). The address variable value A is again increased by 4 bytes, that is, from address 77 to address 78 (step ST113).

If the last track number is not the last track number, the number of the track B and the track number variable value C are retrieved (step ST114) The content of the compact disc 203 is copied to the MiniDisc 104. If it is determined that the copied music is the last one, the first start (step ST115) (Step ST116) and completes the copying. The address 78 is incremented by 8 bytes in the address 76 to the empty pointer P-EMPTY of the user table contents (UTOC).

Here, the process of copying the contents recorded on the compact disc 203 to the mini disc 104 will be described. First, audio data reproduced from the compact disc player is input to the input terminal 110 of the mini disc player and the analog / And is input to the compression unit 112 as a digital signal through the unit 111.

The compression unit 112 compresses the audio data input through the analog / digital conversion unit 111 by 1/5 and provides the compressed audio data to the shock proof unit 114.

The shock proof unit 114 stores the input audio data in the data RAM 113 and provides the audio data to the compact disc encoder unit 115 in order to prevent sound discontinuity due to an external impact.

The compact disc encoder unit 115 receives the compressed audio data from the shock proof unit 114, encodes the compressed audio data into a compact disc format, and provides the compressed audio data to the de-interleave unit 116.

The compression and deinterleaving unit 116 combines the encoded audio data with the error correction code and inputs the combined data to the compact disc encoder unit 117. The compact disc encoder unit 117 compresses the synthesized and inputted audio data, Encoded in the same format as that of the disc 203, and recorded on each track of the mini disc 104.

The time data of the compact disc 203 is recorded as an address in each track of the MiniDisc 104 through the first servo unit 101 and the ADIP encoder unit 118.

After the audio data recorded on the compact disc 203 is converted and recorded in accordance with the format of the mini disc 104 and then the reproduction key of the key operation unit 119 is pressed to reproduce through the mini disc player, The first optical device 105, the first high-frequency amplifier section 106, the compact disk decoder section 107, the sum interleave section 108, the compact disc decoder section 109, the shock proof section 114, a data decompression unit 120, and a digital-to-analog conversion unit 210, and is output to an output terminal 211.

The ADIP decoder unit 102 reads the address recorded in each track of the MiniDisc 104 as time data through the compact disk decoder unit 107 and the first servo unit 101, The system control unit 100 reads the track address of the MiniDisc 104 and continuously reproduces the audio data.

As described above, in the present embodiment, when each track recorded on each track of the compact disc is to be recorded on the mini disc, the track for each track of the compact disc is all recorded on one track of the mini disc It is possible to select and listen to a desired song through a mini-disc by converting the information such as the number of tracks and the track time of the table contents of the compact disc into a format suitable for the mini disc.

Moreover, although specific embodiments of the invention have been illustrated and described, it will be appreciated that the invention is not so limited, as many modifications are possible.

It is therefore to be understood that the invention and all modifications consistent with the true spirit and scope of the claimed principles set forth herein may be covered therein.

The present invention reads information such as the number of tracks and track time of the table contents of a compact disc into the mini disc format when the information recorded on the compact disc is copied to the mini disc, The audio data of the compact disc can be selected and heard only through a mini disc.

Claims (7)

A first step of reading the table contents of the disk in the disk copy mode and setting the contents of the contents of the disk in the user table contents area of the mini disk and determining the variable values of the corresponding number of tracks and each track; A second step of recording the cluster / sector number of the current MiniDisc to the arbitrary start address of the contents of the user table if the arbitrary song of the compact disc is reproduced after setting the contents of the table, and increasing the determined address variable value by arbitrary bytes; If the arbitrary music piece has been reproduced, the cluster / sector number of the current mini disk is written to the arbitrary end address of the contents of the user table, the arbitrary music is set to the track position of the arbitrary start address of the contents of the user table, A third step of incrementing by arbitrary bytes; After the address variable is incremented, the random music number is searched for the last track number. If it is the last one, an arbitrary byte is incremented in the arbitrary address to set the empty space in the contents of the user table. If not, And incrementing the variable value and repeating the above-described steps to copy the data to the MiniDisc. The method as claimed in claim 1, wherein the first step includes: reading the table contents of the compact disc and the table contents of the mini disc; Reading a first index and a last index indicating the number of tracks in the table contents of the compact disc after reading the contents of the table, setting the first index and the last index of the contents of the user table; Setting an arbitrary start address to be recorded after the index setting to an empty pointer of contents of a user table and setting and determining a corresponding number of tracks, an address variable and a track number variable to be copied. How to copy information on double decks. The method of claim 1 or 2, wherein the arbitrary start address is 76th. 3. The method according to claim 2, wherein the address variable value and the track number variable value are set to zero. The method of claim 1, wherein the address variable is incremented by 4 bytes. The method of claim 1, wherein the cluster / sector number of the MiniDisc is recorded in 3 bytes of the start address and the end address of the content of the user table, respectively. Compression means for compressing the audio signal reproduced from the compact disc player at a constant rate; A shock proof means for storing the audio data compressed by the compression means and the reproduction data of the mini disk in a data RAM to prevent a negative interruption; A compact disc encoder means for encoding the audio data compressed by the shock proof means into a compact disc format; A sum de-interleaving means for separating and outputting the encoded audio data and an error correction code; A compact disc encoder means for encoding the separated data into a compact disc format and recording the encoded data on a mini disc; Address pre-groove encoder means for recording the time data provided from the servo means in each track of the mini disk; A compact disc decoder means for decoding audio data read from a mini disc via an optical device; Sum interleaving means for synthesizing the decoded audio data and an error correction code; A compact disc decoder means for decoding the synthesized audio data in a compact disc chroma format and transmitting the decoded audio data through a shock proof means; Expansion means for expanding the transmitted audio data at a predetermined rate; And a digital / analog conversion means for selectively converting the extended audio data and the audio data of the compact disc player into analog signals by a system control means and transmitting the converted analog signals.