JP3161323B2 - MD system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an MD (MiniDisable) having a cue-list reproducing function.
k) Regarding the system.

[0002]

2. Description of the Related Art Conventionally, a hard disk recorder (hereinafter, referred to as an HD recorder) has been known as a device capable of performing non-linear reproduction such as cue list reproduction.
The HD recorder has a function of synchronizing with a MIDI source using MMC (MIDI Machine Control) and MTC (MIDI Time Code), and has an advantage that more advanced editing work is possible.

[0003]

However, in the above-described HD recorder, the music information is ultimately transferred to a DAT (Digital Audio) due to the nature of the system in which music information created through editing work remains in the HD. Tape) and MO
(Magnetic Optical) must be backed up. Although the HD recorder is related to the number of tracks, it usually has tens of minutes for its backup, which is a factor that complicates the editing work. Further, since the HD recorder can be used only for the purpose of editing work, the cost of the total system including the player becomes expensive for general users.

SUMMARY OF THE INVENTION An object of the present invention is to provide an MD system which makes it possible to reproduce a cue list extremely easily by using a link pointer for ensuring continuity of time code addresses in a UTOC area. An object of the present invention is to provide an MD system that enables non-linear editing including synchronization of the MD.

[0005]

According to the present invention, there is provided an MD system for reproducing audio data recorded on a disk in an MD system. Means for setting a mark point at a position, and generating a new time code address by dividing a time code address including start position information and stop position information of the song based on the position information of the designated mark point. Means for linking these time code addresses by a link pointer and recording the time code addresses in the UTOC area on the disc; and a range delimited by start position information, stop position information of the song and a position designated by the mark point. The playback order of the audio data in units of Stage, means for referring to the time code address in accordance with the reproduction order specified by the means, and means for reproducing audio data on the disc in accordance with the time code address referred to by the means. I do.

According to another MD system for recording and reproducing audio data on a disk in an MD system, a mark point is set at an arbitrary position of a song formed by audio data to be recorded on the disk. Means for setting, a time code address is generated based on the start position information and stop position information of the music, and the position information of the designated mark point. Means for linking addresses to record in the UTOC area on the disk, and a reproduction order of the audio data in units of a start point information, a stop position information of the music, and a range delimited by a position designated by the mark point. And the means specified by this means. Means for referring to the time code address in the playback order and, characterized by comprising a means for reproducing the audio data on the disk according to the reference time code address in this section.

In the MD system, when the recording continuity cannot be ensured due to a disk failure or the like, the music is divided and recorded over the defective portion, and a start address and a stop address indicating each divided recording section are linked by a link pointer. By doing so, continuity of music during reproduction is ensured. According to the MD system of the present invention, when a mark point is set at an arbitrary position of a song by using this function, the time code address of the song is divided at the mark point position and linked by the link pointer. By doing so, it is possible to perform cueing in any range separated by the start position, stop position of the song and the position specified by the mark point, and it is possible to repeat the range of any song and change the playback order, etc. Will be possible. In addition, according to the present invention, it is possible to set and locate an arbitrary location point without losing the form of the current MD recording format. As a result, cue list reproduction can be easily realized.

If the present invention is applied to an MD system capable of recording / reproducing, a mark point is set at an arbitrary position of the music during recording, the time code address of the music is divided at the position of the mark point, and a link pointer is used. Can be linked.

According to a more preferred MD system of the present invention, character information indicating the contents of each cutout section on the disk specified by the mark point is recorded in the UTOC area on the disk, and the character information is displayed. By doing so, it is possible to easily specify the reproduction order and improve the operability at the time of editing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of an MD system having an MTR (multi-track recorder) function according to an embodiment of the present invention. The MD type disk 1 is a magneto-optical disk capable of recording and reproduction. The disk 1 is rotated by a spindle motor 2 at a constant linear velocity, for example.
Above and below the disk 1, a magnetic recording head 3 and an optical pickup 4 are arranged to face each other with the disk 1 interposed therebetween. The magnetic recording head 3 applies a magnetic field to the disk 1 when writing information to the disk 1. The optical pickup 4 has a function of optically reading information from the disk 1 and a function of writing information on the disk 1 in cooperation with the magnetic recording head 3. The optical pickup 4 can be moved in the radial direction of the disk 1 by a feed motor 5. The read output of the optical pickup 4 is amplified by a high frequency (RF) amplifier 6 and supplied to a servo controller 7. The servo controller 7 executes the rotation control of the spindle motor 2, the feed control of the feed motor 5, and the focus / tracking control of the optical pickup 4 based on the pickup output.

The reproduction system of the MD system is configured as follows. That is, the output of the RF amplifier 6 is EFM
(Eight to Fourteen Modulation) ・ ACIRC (Adva
ncedCross Interleave Reed-solomon Code) is also supplied to an encoder / decoder 8, where it is decoded by an error correction method based on ACIRC, and is demodulated from 14-bit data to 8-bit data. Is stored in the memory 10 such as a RAM. The reproduction address at that time is given by decoding the output of the RF amplifier 6 by the address decoder 11. The data stored in the memory 10 is appropriately read out by the memory controller 9,
After that, it is D / A converted by the D / A converter 13 and output as a reproduced audio output signal.

The recording system of this MD system is configured as follows. That is, the audio input signal to be recorded is A / D converted by the A / D converter 14 and supplied to the audio compression / decompression unit 12. The data supplied to the audio compression / decompression unit 12 is compressed here, and then stored in the memory 10 under the control of the memory controller 9.
Data to be recorded in the memory 10 is supplied to the EFM / ACIRC encoder / decoder 8 under the control of the memory controller 9, and is supplied to the head drive unit 15 after being subjected to EFM modulation and ACIRC encoding. The magnetic recording head 3 is driven by the head driving unit 15 to record necessary data on the disk 1.

The MD system further includes a system controller 16 for controlling the whole system, a display section 17 for displaying various information, and a point for extracting data to be extracted from audio data recorded on the disk 1. Specifying this cutout data and MIDI
A plurality of operation keys 18 are provided for inputting a MIDI message for synchronizing with a source and for specifying a reproduction order of cutout data and the like. The system controller 16 has a function of recording addresses corresponding to both ends of the cut-out data in the UTOC area of the disk 1 in accordance with an input from the operation keys 18 and referring to these addresses based on a specified reproduction order.
A function of outputting a DI message and a tempo clock TM1.

FIG. 2 shows the UTO recorded on the disk 1.
It is a figure showing an example of C area information. UT of disk 1
In the OC area, a time table 21 and a title table 22 are provided. In the time table 21, a time code address 23 of audio data recorded on the disk 1 and a link pointer 24 for ensuring continuity of each data are recorded. The time code address 23 includes a cluster address 23a, a sector address 23b, and a sound group address 23c.
It is composed of When n pieces of music are recorded on the disc 1, the time table 21 stores in advance the time code addresses (0: 0 :) corresponding to the start point and the stop point of each track from track number 1 to n.
0, 100: 20: 30), (100: 20: 31,2,
00:50:10), and the corresponding link pointer 24 has "0" indicating that the data specified by the time code address 23 is a completed song.
Is recorded. On the other hand, in the title table 22,
Titles “mountain”, “river”,... Indicating the contents of data specified by the point information are recorded.

Next, a description will be given of a point designation process in the MD system configured as described above. Now, as shown in FIG. 3 (a), in the portion where each movement of the song "Mountain" composed of three movements of solo, chorus, and solo + chorus changes, as shown in FIG. Consider the case where one mark point is specified. FIG. 4 is a flowchart for explaining the point designation processing.
When a mark point "2" shown in FIG. 3B is designated by the operation keys 18 during monitoring of the reproduced sound (S1), as shown in FIG. 5A, the time table 21 and the title table 22 are displayed. , A new list is inserted (S
2). At this time, the track number is updated in the time table 21 and the time code address 2 of the track 2 is updated.
3 is an address (30: 5 :) that has a sound group corresponding to the designated mark point “2” as a minimum unit.
8) and the stop address (100: 20: 30) of track 1 before the point designation shown in FIG. 2 are recorded as the start address and stop address of track 2, respectively (S3). In the time code address 23 of the track 1, the address (30, 5, 7) immediately before the designated mark point “2” is recorded as the stop address of the track 1, and in the link pointer 24 of the track 1, The track number “2” of the track 2 linked to the track 1 is stored (S3).

Next, when the mark point "3" shown in FIG. 3B is designated by the operation key 18 (S1), as shown in FIG. 5B, the time table 21 and the title table 22 are displayed. , A new list is inserted (S
2). At this time, in the time table 21, the track number is updated, and the time code address 2 of the track 3 is updated.
3 is the address of the designated mark point “3” (60:15:22) and the stop address of the track 2 before the point designation shown in FIG.
30) are recorded as the start address and the stop address of the track 3, respectively (S3). The time code address 23 of the track 2 includes an address (60, 15,...) Immediately before the designated mark point “3”.
21) is recorded as the stop address of the track 2, and the link pointer 24 of the track 2 indicates the track 2
The track number "3" of the track 3 to which is linked is stored (S3). When the point designation is missed during the monitoring, the wrong key designation may be canceled by the operation keys 18 while continuing the reproduction, and the correct point designation may be performed. In this case, to cancel the point designation, specify the number of the mark pointer, delete the list corresponding to that number, rewrite the list so that the stop address and start address of the list before and after linking to it are rewritten, and What is necessary is just to link with a link pointer.

As described above, when a mark point is set at an arbitrary position of a song, the time code address of the song is divided at the position of the mark point and linked by a link pointer as shown in FIG. As a result, cueing can be performed in any range delimited by the start position, the stop position, and the position specified by the mark point of the music, and one music can be reproduced continuously. Here, at the end position of the music, if the recording ends in the middle of one sound group, the group is completed by filling “0” until the end of the sound group, but “0” is designated by the mark point. Do not fill. As a result, the position can be designated with a resolution of 11.6 ms, which is the unit of the sound group, and continuity is secured. Further, if the present invention is applied to an MD system capable of recording and reproduction, it is possible to set a mark point at an arbitrary position of a song during recording and generate a time code address so that the song is linked at the position of the mark point. . Note that the title may be input using the operation keys 18 when a mark point is specified in a portion where each movement changes.

Next, reproduction of a cue list by the MD system thus configured will be described. FIG. 7 (a)
FIG. 2 is a diagram showing one music piece for one channel along a time axis. As described above, the contents of the data of each track are as follows. start-m1 solo singing m1-m2 chorus m2-stop solo singing + chorus Next, the section data 'start-m2', 'm1-m
2 ',' m2-stop 'to music information data' sta
Consider a case in which clipping is performed from rt to stop 'and the order is rearranged as shown in FIG. In this case, a program for executing the cue list reproduction processing is stored in the RAM or the EEPROM, and is controlled from the system controller 16 based on the program.

FIG. 8 is a flowchart showing an operation for rearranging the order of cutout data. First, first (n =
When the prompt for specifying the track data of 1) is displayed on the display unit 17 (S11). The user responds by asking the start point of the first cut data =
'Start' is input (S12), and the stop point of the first cutout data = 'm2' is input (S1).
3) Input the number of repeats of the first cut data = '1' (S14). Next, to specify the second cutout data (S15), n = 1 is incremented to n = 2 (S16). Hereinafter, in the same manner, Track data repetition start-m2, 1 m1-m2, 1 m2-stop, and specify cutout data as shown in S2 to S1.
6) Determine the playback order.

According to this embodiment, since an arbitrary location point can be set and searched for without losing the form of the current MD recording format, cue list reproduction can be easily realized. Further, by displaying the title on the display unit 17, it is possible to easily specify the reproduction order and to improve the operability at the time of editing. Further, since the designated mark point is stored on the disc 1, the storage is excellent in storability and portability. The cut-out data may be specified by the above-described track number.

[0021]

As described above, according to the present invention,
When a mark point is set at an arbitrary position in the song by using the link function for ensuring the continuity of the song during playback, the time code address of the song is divided at the position of the mark point and the link pointer is set. By linking with, it is possible to perform cueing in any range delimited by the start position, the stop position of the music and the position specified by the mark point, and to repeat the range of any music and the reproduction order. Replacement becomes possible.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an MD system according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of UTOC area information recorded on a disc.

FIG. 3 is a diagram for explaining point designation.

FIG. 4 is a flowchart showing a point designation process.

FIG. 5 is a diagram showing an example of UTOC area information when a point is designated.

FIG. 6 is a diagram showing a list structure of a time code store.

FIG. 7 is a diagram showing one music piece for one channel along the time axis.

FIG. 8 is a flowchart showing cue list reproduction processing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Disk, 2 ... Spindle motor, 3 ... Magnetic recording head, 4 ... Optical pick-up, 5 ... Sending motor, 6 ... RF
Amplifier, 7 Servo control unit, 8 EFM / ACIRC encoder / decoder, 9 Memory controller, 10 ...
Buffer memory, 11 address decoder, 12 audio compression / expansion unit, 13 D / A converter, 14 A / D converter, 15 head drive unit, 16 system controller, 17 display unit, 18 display unit Operation keys, 21: time table, 22: title table, 23: time code address, 23a: cluster address, 23b: sector address, 23c: sound group address, 24: link pointer.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 19/02 G11B 11/10 G11B 27/10 G06F 3/06

Claims (2)

(57) [Claims] 1. An MD system for reproducing audio data recorded on a disk, wherein a mark point is set at an arbitrary position of a song formed by the audio data recorded on the disk; The time code address including the start position information and the stop position information is divided based on the position information of the designated mark point to generate a new time code address, and these time code addresses are linked by a link pointer. Means for recording the data in a UTOC (User Table Of Contents) area on the disk; and starting and stopping information of the music and the audio data in units of a range delimited by a position designated by the mark point. Means for specifying the playback order of the MD system characterized by comprising: means for referring to the time code address in accordance with the constant reproduction order, and means for reproducing the audio data on the disk according to the reference time code address in this section. 2. An MD system for recording and reproducing audio data on a disk, comprising: means for setting a mark point at an arbitrary position of a song formed by audio data to be recorded on the disk; A time code address is generated based on the start position information, the stop position information, and the position information of the designated mark point, and at the position of the mark point, these time code addresses are linked by a link pointer so as to be recorded on the disk. Means for recording the audio data in the UTOC area; means for specifying the reproduction order of the audio data in units of a range delimited by the start position information, the stop position information of the music, and the position specified by the mark point; The time according to the playback order specified by MD system characterized by comprising: means for referring to the over de address, and means for reproducing the audio data on the disk according to the reference time code address in this section.