JP3711614B2 - Disk unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a disk device. Specifically, after the audio data read from the first disk is analog dubbed to the second disk provided on the disk dubbing side, each second disk is designated by the flag information of the first disk. The track number is sequentially assigned to each address of the second disc by using the enter key while sequentially performing the intro reproduction from the address, and the track number can be easily dubbed together with the audio data.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a disk device (MD playback device) that reproduces audio data from a mini-disc (hereinafter referred to as “MD”) and a disk device (MD recording / reproduction device) that can also record audio data on a recording / playback MD. Proposed. As is well known in the art, audio data is recorded on the recording / reproducing MD in a state where the data amount is compressed to about 1/5 by an audio signal compression technique called ATRAC (Adaptive Transform Acoustic Coding).
[0003]
In the MD for reproduction, track data such as the number of tracks, address data such as the start address and end address of each track, and character data such as a disk name and a track name are recorded as TOC (Table of Contents) data. Yes. The TOC data is recorded in the recording / reproducing MD for the first time during recording.
[0004]
4A and 4B show the MD area division and the sector division of the area where the TOC data is recorded.
[0005]
In FIG. 4A, the reproduction-only MD is divided into a TOC area (lead-in area), an audio data area, and a lead-out area, and the TOC data is recorded in the TOC area. On the other hand, the recording / playback MD is divided into a lead-in area, a UTOC area (user TOC area), an audio data area, and a lead-out area, and the TOC data read from the TOC area is re-recorded in the UTOC area.
[0006]
The TOC area and the UTOC area are each composed of a plurality of sectors as shown in FIG. In sector 0, track data such as first TNO and last TNO and address data of each track such as a start address and an end address are recorded. In sector 1 and sector 4, character data such as a disk name and each track name is recorded.
[0007]
[Problems to be solved by the invention]
By the way, the MD playback device and the MD recording / playback device are connected, the digital audio data of the MD played back by the MD playback device (master side) is converted into an analog signal, and then converted back to a digital signal. When analog dubbing is performed on the recording / playback MD set on the slave side, only audio data can be dubbed, so TOC data that is digital code data cannot be dubbed. As a result, since there is no TOC data, even if it consists of a plurality of tracks on the master side, it is handled as one track on the slave side. This is because the track number and the like are determined based on the track data and address data included in the TOC data, and therefore, if there is no TOC data, it is handled as one track.
[0008]
Since the TOC data cannot be recorded, the TOC data must be manually created by the user in order to separate the slave side MD as the same track as the master side MD. For example, when the head of each track of the master side MD is played back during dubbing of audio data, the user inputs a marker signal for creating the TOC data to the slave side MD or plays back all the songs on the slave side MD during that time. It is necessary to perform a marker signal driving operation. However, these methods require considerable time and labor.
[0009]
In order to solve this problem, there is an MD recording / playback apparatus having a LEVEL SYNC (level sync) function for detecting that an input audio signal has become below a predetermined level (silence) for a predetermined time or more. When analog dubbing is performed on an MD that has the same delimiter between the silent part and the track, this level sync function can be used to automatically generate and record a track number, which can be separated as the same track as the master side. it can.
[0010]
However, even when this level sync function is used, for example, when analog dubbing is performed for audio data that continues to the next movement, such as classical music, there is no silence between the movements. No breaks can be detected, and track numbers cannot be entered between these movements. Therefore, a plurality of tracks are handled as one track, and a specific movement cannot be designated and reproduced. The same applies to sources that move to the next track while fading out. Also, even if there is a silent part in the separation between tracks on the master side MD, the track number cannot be entered even if it is less than a specified time (for example, 3 seconds).
[0011]
Further, when the silent portion continues for a predetermined time or longer, the slave side separates the track even if the track is not separated, so that one track is treated as a plurality of tracks.
[0012]
Thus, in the case of analog dubbing, even if the level sync function is used, depending on the content of audio data of the master side MD (correspondence between the silence part and the track delimiter), the slave side MD uses the same track as the master side. There was a possibility that it could not be separated.
[0013]
Therefore, the present invention provides a disk device capable of assigning the same track number to the slave side disk as the master side disk, regardless of the contents of the audio data, when the audio data is analog dubbed between the disks. .
[0014]
[Means for Solving the Problems]
The disc device according to the present invention reads audio data from the first disc, performs analog dubbing to the second disc provided on the disc dubbing side, and reads TOC data from the first disc to generate flag information. Thereafter, the analog dubbed audio data is read from the second disc, and the audio data is sequentially intro played from each address specified by the flag information of the first disc. In the disk device for sequentially assigning track numbers to the respective addresses according to the operation of the enter key for assigning numbers, the disk device has a cursor key for correcting the address data and finely adjusting the reproduction start position. the cursor key is operated a playback start position of each track By being moved to the head position, again the voice data from the head position of the track and intro play, according to the operation of the enter key, and is characterized in that so as to impart a track number to each address .
[0015]
The flag information is generated based on the TOC data read from the first disk, and is stored in, for example, memory means as digital data without being converted into analog data. The audio data read from the first disc is analog dubbed to a second disc provided on the disc dubbing side. Thereafter, dubbed audio is read from the second disc are sequentially intro play from the address specified in the stored in the memory unit flag information, enter into intro play when to enable the reproduction content By operating the key , a track number is sequentially assigned to each address of the second disk. On the assumption of this, in the intro playback, by being moved a playback start position the cursor key is operated to the head position of each track, audio data and intro play again from the head position of the track, enter key According to the above operation, a track number is assigned to each address .
[0016]
Therefore, the address specified by the flag information of the first disk can be finely adjusted regardless of the contents of the audio data of the first disk, and the same track number as that of the first disk side can be set to the corrected address. It can be applied in a short time and easily . Therefore, depending on the address specified by the flag information of the first disk, even if the audio data cannot be reproduced accurately from the beginning of each track on the second disk, the second disk is not accurate. Address data can be recorded. In addition, the user can enjoy various functions using the same track number as that of the first disk even on the second disk.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an MD recording / reproducing apparatus 200 as an embodiment of the present invention will be described with reference to FIG. FIG. 1 shows an MD playback apparatus 100 and an MD recording / playback apparatus 200.
[0018]
In FIG. 1, an MD playback apparatus 100 that plays back MD1 as a first disk includes an optical pickup 2, an RF amplifier unit 3, a decoder 4, a memory controller 5, a DRAM 6, a decoder 7, a D / A converter 8, an SRAM 9, and a system. It has a controller 10 and changeover switches SW1, SW2.
[0019]
Output signals of a plurality of photodetectors (not shown) constituting the optical pickup 2 are supplied to the RF amplifier unit 3. The tracking error signal and the focus error signal obtained from the RF amplifier unit 3 are supplied to a servo control circuit (not shown), and the servo control circuit moves the tracking servo and focus servo of the optical pickup 2 and the optical pickup 2 to a predetermined position. The rotation of the feed motor and spindle motor that move to the position is also controlled.
[0020]
The MD1 reproduction RF signal obtained from the RF amplifier unit 3 is supplied to the EFM and CIRC decoder 4 to perform demodulation processing and error correction processing. Among the data that has been error-corrected by the decoder 4, compressed and encoded data relating to audio data is temporarily stored in the DRAM 6 via the memory controller 5. The compressed encoded audio data stored in the DRAM 6 is sequentially read out by the memory controller 5, and when the movable terminal a of the changeover switch SW1 is connected to the b side, the compressed encoded audio data is supplied to the decoder 7 for decompression decoding. The linear digital audio data output from the decoder 7 is supplied to the D / A converter 8 when the movable terminal d of the changeover switch SW2 is connected to the e side, converted into an analog audio signal, and derived to the analog output terminal 11. Is done. On the other hand, when the movable terminal d of the changeover switch SW2 is connected to the f side, the digital audio data is led to the digital output terminal 12 as it is without being D / A converted.
[0021]
The TOC data relating to the audio data recorded in the TOC area or UTOC area of the MD 1 with the data corrected by the decoder 4 is stored in the SRAM 9 via the memory controller 5. The TOC data is stored in the SRAM 9 before the voice data is read. When the movable terminal a of the changeover switch SW1 is connected to the c side, the TOC data stored in the SRAM 9 is read out via the memory controller 5 and led out to the digital output terminal 12 as digital data.
[0022]
The operations of the decoder 4, the memory controller 5 and the changeover switches SW1 and SW2 are controlled by a system controller 10 including a microcomputer.
[0023]
The MD recording / reproducing apparatus 200 for recording / reproducing the MD 20 as the second disk includes an A / D converter 21, an encoder / decoder 22, a memory controller 23, a DRAM 24, an SRAM 25, an encoder / decoder 26, a system controller 27, and a head drive. A circuit 28, a magnetic head 29, and changeover switches SW3 and SW4 are included.
[0024]
The analog audio signal output from the analog output terminal 11 of the MD playback apparatus 100 is supplied to the analog input terminal 31 of the MD recording / reproducing apparatus 200 via the analog code 40, and linear digital audio data is output from the A / D converter 21. Is converted to This digital audio data is supplied to the compression / decompression encoder / decoder 22 by connecting the movable terminals g and j of the changeover switches SW3 and SW4 to the h side and the k side, respectively. After being encoded, it is stored in the DRAM 24 via the memory controller 23.
[0025]
The digital audio data output from the digital output terminal 12 of the MD playback apparatus 100 is supplied to the digital input terminal 32 of the MD recording / playback apparatus 200 via the optical code (optical cable) 50, and the changeover switches SW3 and SW4 are movable. The terminals g and j are connected to the i side and the k side, respectively, so that they are encoded by the encoder / decoder 22 and then supplied to the DRAM 24.
[0026]
The compressed and encoded data relating to the audio signal stored in the DRAM 24 is sequentially read out via the memory controller 23 and supplied to the encoder / decoder 26 of EFM and CIRC for encoding processing and modulation for error correction processing. It is processed.
[0027]
The recorded audio data output from the encoder / decoder 26 is supplied to the head drive circuit 28. As a result, the output magnetic field of the magnetic head 29 is modulated by the recording audio data, and the recording audio data is magnetically modulated and recorded on the recording / reproducing MD 20 in cooperation with the laser light from the optical pickup 33.
[0028]
The operations of the memory controller 23 and the encoder / decoder 26 described above are controlled by a stem controller 27 including a microcomputer.
[0029]
The MD recording / reproducing apparatus 200 further includes an optical pickup 33 and an RF amplifier unit 34. At the time of reproduction, audio data recorded on the MD 20 is detected by the optical pickup 33, and the output signal is supplied to the RF amplifier unit 34. Then, the compressed encoded audio data that has been demodulated and error-corrected by the encoder / decoder 26 and temporarily stored in the DRAM 24 is read out via the memory controller 23, and the movable terminal of the changeover switch SW 4 is controlled by the system controller 27. When j is connected to the k side, the encoder / decoder 22 performs decompression decoding processing. The sound is output from a speaker (not shown).
[0030]
The system controller 27 is connected to an operation key unit 35 for a user to perform various operations, and is connected to a display 36 for displaying an operation procedure by the operation key unit 35 and a system state. The operation key unit 35 is also provided with an enter key, a skip key, a cursor key, and the like which will be described later. When the enter key is pressed during playback of the MD 20, a track number is given with the pressed position as the start address. When the skip key is pressed, playback is stopped, jumping to the next track, and playback is resumed. The cursor key is for finely adjusting the reproduction start position by correcting the address data.
[0031]
In the above configuration, a procedure for dubbing audio data and TOC data recorded in the MD 1 will be described with reference to the drawings. 2 and 3 are flowcharts showing control operations of the system controllers 10 and 27 and the memory controllers 5 and 23 in the dubbing mode.
[0032]
When the operation key unit 35 is operated to set the dubbing mode, the system controller 27 of the MD recording / reproducing apparatus 200 determines whether or not the master side medium is the same as the slave side medium (step ST1). When it is determined that they are not the same, the process proceeds to step ST101, where it is displayed on the display 36 that the dubbing mode is changed to a mode in which only audio data is dubbed. It is dubbed on the disk MD20.
[0033]
When it is determined in step ST1 that the media is the same, the process proceeds to step ST2 where it is determined whether analog dubbing or digital dubbing is performed. When the operation key unit 35 is operated and designated to perform digital dubbing, dubbing permission / non-permission data is read from the MD1 TOC data stored in the SRAM 9 via the memory controller 5. Whether or not digital dubbing is possible is determined. When it is determined that digital dubbing is possible, the process proceeds to step ST201 and the audio data is digitally dubbed. Then, the process proceeds to step ST202 and the TOC data of MD1 stored in the SRAM 9 is transmitted via the optical code 50. Digitally transmitted to the recording / reproducing apparatus 200 and dubbed to the MD 20.
[0034]
However, as is well known, due to limitations of SCMS (Serial Copy Management System), digital copying can only be performed once for serial copying. Therefore, in order to dubb both audio data and TOC data in the second and subsequent serial copies, analog dubbing described later must be performed.
[0035]
Hereinafter, a case where analog dubbing is selected in step ST2 will be described.
[0036]
First, the movable terminals a and d of the changeover switches SW1 and SW2 are connected to the b and e sides, respectively, and the compressed and encoded audio data temporarily stored in the DRAM 6 is supplied to the decoder 7 via the memory controller 5. After the decompression process and the decoding process, the D / A converter 8 converts the signal into an analog audio signal and derives it to the analog output terminal 11 (step ST3).
[0037]
This analog audio signal is supplied to the analog input terminal 31 of the MD recording / reproducing apparatus 200 via the analog code 40. Then, after being converted into linear digital audio data by the A / D converter 21, the movable terminal g of the changeover switch SW3 is connected to the h side so that it is compressed and encoded by the encoder / decoder 22 (step ST4).
[0038]
The compression-encoded digital audio data is supplied to the encoder / decoder 26 via the memory controller 23 and the DRAM 24 when the movable terminal j of the changeover switch SW4 is connected to the k side, and is encoded for error correction processing. After the processing and the modulation processing are performed, magnetic modulation recording is sequentially performed on the MD 20 by the magnetic head 29 via the head driving circuit 28 (step ST5). The operations from step ST3 to step ST5 are continued until it is determined in step ST6 that all the audio data of the MD1 on the master side has been dubbed.
[0039]
If it is determined in step ST6 that the audio dubbing has been completed, the MD1 TOC data stored in the SRAM 9 of the MD playback apparatus 100 is sequentially read out via the memory controller 5. Based on this, flag information (MS (Music Search) signal) of each track is generated. Then, when the movable terminal a of the changeover switch SW1 is connected to the c side under the control of the system controller 10, the flag information MS is transmitted to the MD recording / reproducing apparatus 200 side via the optical code 50. The flag information MS is sequentially stored in the SRAM 25 as the memory means via the memory controller 23 when the movable terminal j of the changeover switch SW4 is connected to the l side under the control of the system controller 27 (step ST7).
[0040]
Subsequently, the flag information MS is read from the SRAM 25 via the memory controller 23 (steps ST8 and ST9), and the audio data of the MD 20 is retrieved by the optical pickup 33 from the address indicated by the flag information MS. Under the control of the system controller 27, the movable terminal j of the changeover switch SW4 is connected to the k side, decoded by the encoder / decoder 22 and output from the speaker for 3 seconds (step ST10).
[0041]
When the user listens to the sound output from the speaker and determines that the reproduction is correctly performed from the beginning of the first track of the MD1 on the master side and presses the enter key (step ST11), the magnetic head 29 The address data specified by the flag information MS is recorded at the corresponding location in the UTOC area (step ST12), and the process proceeds to step ST13.
[0042]
In step 13, it is determined based on the flag information MS whether or not the track reproduced in step ST10 (in this case, the first track) is the last track. If it is determined that the track is not the last track, the process proceeds to step ST14, where the track to be played is changed to the next track (second track) in step ST10, and the step is repeated until it is determined in step ST13 that the playback track is the last track Each operation from ST9 to step ST13 is continued. When it is determined in step ST13 that the reproduction track is the final track, the dubbing mode is exited.
[0043]
If it is determined in step ST11 that the enter key has not been pressed, the process proceeds to step ST15 to determine whether or not the skip key has been pressed. If it is determined that the skip key has been pressed, the process proceeds to step ST12. On the other hand, when it is determined that the skip key has not been pressed, the routine proceeds to step 16 where it is determined whether or not the cursor key has been operated by the user. When it is determined that the cursor key has been operated, the process proceeds to step ST17. When it is determined that the cursor key has not been operated, the process from step ST10 is repeated again.
[0044]
In step ST17, the address specified by the flag information MS of the Nth track reproduced in step ST10 is corrected in accordance with the movement of the cursor key. And the process from step ST10 is repeated again.
[0045]
As described above, in the present embodiment, in the dubbing mode, the audio data of the master disk MD1 set in the MD playback apparatus 100 is analog dubbed to the slave disk MD20 set in the MD recording / reproducing apparatus 200. After that, flag information is generated based on the TOC data of MD1 stored in the SRAM 9 on the master side, and the SRAM 25 on the slave side remains as digital data without going through the decoder / encoders 7 and 22 for audio compression / decompression and modulation / demodulation. Is transmitted and stored. Then, each track of the MD 20 is sequentially reproduced intro from the address indicated by the flag information MS. When the track split enter key is pressed during reproduction, the address data specified by the flag information is recorded in the MD 20 and the same track number as that of the MD 1 is given.
[0046]
Further, during the reproduction, the user moves the cursor key to the head position of each track, and fine adjustment of the address specified by each flag information MS is performed. Thus, the track data can be assigned to the corrected address by intro-playing the audio data again from that position and operating the enter key by the user. Therefore, even if the slave disk MD20 cannot be accurately reproduced from the beginning of each track by the address specified by the flag information MS of the master disk MD1, the correct address data is stored in the UTOC of the slave disk MD20. Recorded in the area.
[0047]
In the present embodiment, the SRAM 25 is used as the memory means for the flag information MS, but other memories such as a flash memory and a DRAM may be used. Also, character data in the MD1 TOC data stored in the SRAM 9 of the MD playback apparatus 100 is transmitted to the MD recording / reproducing apparatus 200 via the optical code, stored in the SRAM 25, read out after the dubbing of the address data is finished, and MD20 You may make it dubbing to the UTOC area.
[0048]
In the present embodiment, an example in which the top address of each track is finely adjusted using the cursor key during the dubbing mode is shown. However, such adjustment is performed after the dubbing mode is finished, An approximate track start position (address data AddN) may be temporarily recorded. This further simplifies the work in the dubbing mode.
[0049]
Further, if a master-side disk on which characters or symbols are recorded, or a disk that can be recorded as a slave disk is used, other magneto-optical disk (MO), floppy disk (FD), digital video The present invention can also be applied to a disc (DVD) or the like.
[0050]
【The invention's effect】
According to the present invention, when analog dubbing of audio data from the first disk to the second disk is performed, the cursor key is operated during the intro reproduction based on the audio data read from the second disk, and the reproduction start position the by being moved to the head position of each track, again intro play the audio data from the address specified by the flag information of the first disk, in the intro playback, according to an enter key operation, with the second disc A track number is assigned to an address specified by flag information.
[0051]
With this configuration, the address specified by the flag information of the first disk can be finely adjusted regardless of the contents of the audio data of the first disk, and the same track as the first disk side can be set to the corrected address. A number can be easily assigned in a short time . Therefore, depending on the address specified by the flag information of the first disk, even if the audio data cannot be reproduced accurately from the beginning of each track on the second disk, the second disk is not accurate. Address data can be recorded. In addition, the user can enjoy the remarkable effect that the second disc can enjoy various functions using the same track number as the first disc .
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.
FIG. 2 is a flowchart showing a control routine in a dubbing mode.
FIG. 3 is a flowchart showing a control routine in a dubbing mode.
FIG. 4 is a diagram showing area division of a mini-disc.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mini disk 2,33 Optical pick-up 3,34 RF amplifier part 4 EFM and CIRC decoder 5,23 Memory controller 6,24 DRAM
7 Decoder for voice expansion 8 D / A converter 9, 25 SRAM
10, 27 System controller 11 Analog output terminal 12 Digital output terminal 20 Recording / playback mini disk 21 A / D converter 22 Audio compression / decompression encoder / decoder 26 EFM / CIRC encoder / decoder 28 Head drive circuit 29 Magnetic head 31 Analog input Terminal 32 Digital input terminal 33 Optical pickup 35 Operation key unit 36 Display 40 Optical code 50 Analog code 100 MD playback device 200 MD recording / playback device

Claims (2)

Audio data is read from the first disk and analog dubbed to a second disk provided on the disk dubbing side, and TOC data is read from the first disk to generate flag information. Operation of an enter key that reads analog dubbed audio data from the disc, sequentially reproduces the audio data from each address specified by the flag information of the first disc, and assigns a track number during the intro play In the disk device that sequentially assigns track numbers to the above addresses,
Has cursor keys to correct the address data and fine-tune the playback start position,
During the intro playback, the cursor key is operated to move the playback start position to the start position of each track, so that the audio data is re-intro played from the start position of the track, and according to the operation of the enter key , A disk device characterized in that a track number is assigned to each address. The disk device according to claim 1, wherein the character data included in the TOC data is recorded on the second disk after a track number is assigned.

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