JPH10112168A - Editing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promote a user to process proper editing and to improve handleability in an optical disk by judging whether or not the data to be lost are retreated to a recordable area and notifying it to a user in editing processing between channels. SOLUTION: When the user selects the processing of copy, movement and erase at the time of editing between channels of a magneto-optical disk, a system control circuit 15 detects a data amount of an audio signal lost due to the editing processing and capacity of a retreatable area at a fixed period, and compares both with each other, and when the circuit 15 judges as retreatable, it performs the editing processing after it records the audio signal to be lost on the retreat area, and it turns on lighting of an operation element 7 of undoing. Further, when the retreat is impossible, the circuit 15 turns off the lighting of the operation element 7 to notify it to the user. At this time, when the user requires the undoing, the user erses unwanted pieces of music, and expands a recording area to execute editing work. Thus, even when the processing of the undo is impossible, the proper editing processing becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an editing device,
For example, the present invention can be applied to a case where an audio signal is edited by applying the present invention to a magneto-optical disk device. The present invention alerts the user by confirming whether or not the data at the editing destination lost by editing can be saved in the recordable area, and notifies the user of the editing. Enables processing to be performed.

[0002]

2. Description of the Related Art Conventionally, in a magneto-optical disk drive,
Continuous audio data is recorded in cluster units, and the recorded audio data is managed by UTOC.

FIG. 24 is a schematic diagram showing the configuration of this cluster. In the magneto-optical disk drive, the right and left channel audio data sequentially input are input to an audio compression circuit, and a predetermined period (11. 61 [msec]). Further, after time axis compression processing is performed for each block, audio data (R and L) of the right and left channels are multiplexed (FIG. 24 (D)) (hereinafter, time channel compressed two channels, 11.61 [mse]
c] Periodic audio data is called a sound group).

Further, the magneto-optical disk drive has a
A sound frame is formed by one sound group (FIG. 24C), and one sound frame is allocated to two sectors (FIG. 24B). Further, for 32 sectors to which audio data is allocated in this way, 3 sectors
Link sector L and one sub-sector S are added, and 36
One cluster is formed by sectors (FIG. 24A).
Here, the link sector L is a cluster connection sector to which predetermined data having no meaning is assigned instead of audio data, and the subsector S is a sector to which sub data is assigned.

As shown in a table format in FIG. 25, each sector is composed of 2352 bytes of data, of which an area represented by vertical addresses "0" to "3" is allocated to a header. In this header, the area of the vertical addresses “0” to “2”, 12 bytes, is the synchronization pattern (sy).
nc), and the cluster address is assigned to the first and second bytes of the subsequent vertical address “3”. Subsequently, a sector address is assigned, and subsequently, the mode of the magneto-optical disk is recorded. Following this header, a main data area of 2336 bytes is formed, and time-axis-compressed audio data is allocated to this area in units of sound groups.

In this type of magneto-optical disk device, sequentially input audio data is sequentially allocated to clusters as described above, and the audio data is sequentially recorded in an unrecorded area in units of the cluster, and an erasable area is recorded. The audio data is sequentially overwritten and recorded. At this time, if it becomes difficult to record a series of audio data in one continuous area, the remaining audio data is recorded in cluster units in another recording complete area or erasable area.

[0007] With respect to the recording of audio data in units of clusters, a recording area is formed on the inner peripheral side of the magneto-optical disk in the magneto-optical disk, and the audio data is recorded by the management data recorded in this management area. Manage.

That is, in the magneto-optical disk, UTOC data is assigned to the management data, and when the magneto-optical disk device is loaded, the UTO data is transferred to the magneto-optical disk device.
When the UTOC data is accessed and a UTOC rewrite request is made, such as when power is turned off or the magneto-optical disk is ejected, the UTOC data is rewritten as necessary.

In the UTOC data, the first to fourth sectors are set in units of sectors as in the case of the audio data, and the second to fourth sectors are set as options. As shown in FIG. 26, the first sector (that is, a sector 0) is assigned a cluster address following a header, and then has 00h data, predetermined code data (Maker code, Model code),
Data (First TNO, Last TNO) indicating the recording start position and the end position of the audio signal and the like are assigned.

[0010] The first sector is followed by disc identification data (DISC.ID), a pointer (P-DFA) indicating the position of a defective area in the program area, and the start position of a vacant slot for a slot to be described later. Pointer (P-EMPT
Y), a pointer (P-FRA) indicating the head position of the recordable area of the program area is assigned.

Subsequently, pointers (P-TNO1,..., P-
TNO255) is allocated, and in the area below the vertical address “76”, the area is allocated to a slot in units of 8 bytes. Here, each slot has a start address (Star
t address), an end address (End address), mode data (Track mode), and a link pointer (Link-P) are recorded.

Here, pointers (P-TNO1,..., P-TNO25)
5) corresponds to the music recorded on the magneto-optical disk and specifies the address of the corresponding slot. Start address, End address
Specifies a recording start position and a recording end position of continuous audio data by a cluster address, a sector address, and a sound group (hereinafter, a recording unit specified by the start address and the end address). And a link pointer (Link-P) corresponding to a subsequent audio signal (that is, a subsequent part) when a continuous audio signal is recorded separately in another area of the magneto-optical disk. Specify a slot. Note that the mode data (Track mod
In e), the mode of each part is recorded.

Thus, as shown in FIG. 27, for example, when audio data is recorded on a magneto-optical disk on which no audio data is recorded for the first time, a pointer (P) indicating the head position of a recordable area is recorded. -FR
According to the designation of A), the parts P1, P2, P corresponding to each performance are so arranged that the performance of the first music, the second music,...
3, P4 is formed, and the audio signal is recorded.
Corresponding to this, the start address and end address of each of the parts P1, P2, P3, P4 are sequentially recorded in slots, and the slot of each performance is designated by a pointer.

In the case where the second music piece is erased from the audio data recorded continuously in this manner, in the magneto-optical disk device, this erase is performed by a pointer (P-EMPTY) indicating the head position of an empty slot. The specified area. That is, in this pointer (P-EMPTY), a slot corresponding to the pointer (P-FRA, P-TNO1,..., P-TNO255) is designated, so that in the magneto-optical disk device, for example, When the second and fourth songs are deleted, the pointers (P-TNO1, P-TNO2, ...
..) Is designated by a pointer (P-EMPT) indicating the head position of an empty slot.
Y) and the link pointer (Link-P) of the slot specified by this pointer, so that the audio data can be easily erased.

Thus, in a magneto-optical disk drive,
In this manner, audio data is recorded in units of clusters, and the recorded audio data is managed by UTOC, so that even if recording and erasing processing is repeated, the UTOC is rewritten in accordance with this processing to continue the recording. Audio data can be recorded discretely, and audio data recorded discretely can be reproduced, so that the program area of the spectral magnetic disk can be used effectively.

On the other hand, at the time of editing, the magneto-optical disk device rewrites the pointers (P-TNO1, P-TNO2,...) Or uses each pointer (P-TNO1, P-TNO2,...). By rewriting each designated slot,
Change the playing order of audio data recorded on the magneto-optical disk. Further, as shown in FIG. 28, for example, the performance of one music is divided into two performances by dividing the part P1 of one music into two parts P11 and P12 and rewriting the corresponding pointers and slots (FIG. 28). (A)
And (B)).

Thus, in the magneto-optical disk device, audio data can be easily edited in units of clusters by a simple process of rewriting UTOC.

[0018]

By the way, in a magneto-optical disk, not only is UTOC rewritten, but also
Editing can also be performed by actually updating the audio data.

That is, by reproducing audio data from the editing source and overwriting and recording the reproduced audio data at the editing destination, a desired performance can be rewritten into another performance in units of sound groups.

In this case, in the magneto-optical disk device, since random access is possible, so-called undo processing can be executed by temporarily saving audio data lost by editing to a recordable area.
That is, in response to the operation of the user, the temporarily saved audio data is recorded again at the editing destination, whereby the situation immediately before the editing can be reproduced.

However, in the editing process, the amount of audio data to be replaced changes, and in the case of a magneto-optical disk, when the data amount of recorded audio data increases, the capacity of the recordable area decreases accordingly. In some cases, it is difficult to save all audio data lost by editing. in this case,
The magneto-optical disk device cannot execute the undo process. Even in such a case, if the editing process can be appropriately performed, it is considered that the usability of the magneto-optical disk device can be improved.

The present invention has been made in view of the above points, and it is an object of the present invention to propose an editing apparatus which can appropriately execute an editing process even when an undo process cannot be executed.

[0023]

According to the present invention, in order to solve the above-mentioned problems, at the time of editing, a recordable capacity of a program area is detected based on management data, and the recordable capacity and an editing source are determined. Or compare with the capacity of the editing destination,
Based on the comparison result, it is notified whether or not the audio signal recorded at the editing destination can be saved.

At the time of editing, the recordable capacity of the program area is detected based on the management data, and the recordable capacity is compared with the capacity of the edit source or edit destination. It can be determined whether the audio signal can be saved. Thereby, based on this comparison result,
Inform the user whether or not the audio signal recorded at the editing destination can be evacuated, to alert the user when it is difficult to evacuate the audio signal, and to perform appropriate editing according to the instruction of the user who has been alerted. Can be.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(1) Overall Configuration FIG. 2 is a perspective view showing a magneto-optical disk according to an embodiment of the present invention. This magneto-optical disk drive 1 has an arrow A
As shown in the figure, the disk cassette 3 is inserted from the disk insertion slot 2 arranged on the side surface.
The audio signal is recorded on the magneto-optical disk held in the optical disk, and the audio signal recorded on the magneto-optical disk is edited and reproduced.

Here, in the magneto-optical disk applied to the magneto-optical disk device 1, a pre-groove forming a guide groove for a laser beam is formed in a meandering manner on an information recording surface, and a predetermined frequency is determined based on the frequency of the meandering. It is designed so that it can be driven to rotate at a rotational speed and that the address of the laser beam irradiation position can be detected. The information recording surface is divided into concentric circles, and the outer peripheral side is assigned to a program area for recording audio signals, and the inner peripheral side is assigned to a management area. In the magneto-optical disk, management data including PTOC and UTOC for managing the program area is recorded in this management area. The magneto-optical disk uses this PT
The UTOC is formed to be accessible on the basis of the OC, and the UTOC is formed in the format described above with reference to FIG.

The upper surface of the magneto-optical disk device 1 is set to an operation panel, and an audio signal of at least one channel is inputted through a connector 4 arranged on the upper portion of the operation panel and recorded on the magneto-optical disk. And output the recorded audio signal. Further, in the magneto-optical disk device 1, a master operator 5 is arranged for each channel on the left side of the operation panel, and the volume and the like can be adjusted by operating these operators 5.

In the magneto-optical disk drive 1, various controls 7 are arranged next to the controls 5, a jog dial 8 is provided below the controls 7, and a display panel 9 is provided above the controls 7. For example, the user can operate the jog dial 8 while checking the display on the display panel 9 to set an in point, an out point, and the like. An operation unit 10 for reproduction or the like is arranged adjacent to the jog dial 8 so that the operation unit 10 can be operated to record and reproduce an audio signal.

In the magneto-optical disk drive 1, one of the operators 7 used for setting the in-point and the like is set as an ANDO or REDO operator, and this operator is repeatedly pressed. Ando and Rido can be executed.

FIG. 3 shows the operator 7 of the Ando and Rido.
FIG. 4A is a plan view showing the operation element 7A. On the upper surface of the operation element 7A pressed by a finger, a display of "UNDO" indicating the function of the operation element is formed, and a window 7B is formed in the upper left corner. Here, the window 7B can be illuminated in green by a light emitting diode arranged inside. In the magneto-optical disk device 1, the window 7B can be illuminated as necessary to transmit various information to the user. Has been made.

FIG. 4 is a block diagram showing the configuration of the digital signal processing section of the magneto-optical disk device 1. In this magneto-optical disk drive 1, an analog-to-digital conversion circuit (A / D) 12 performs analog-to-digital conversion processing on audio signals SA1 to SA4 of up to four channels input from the connector 4 at a predetermined sampling frequency, and outputs a digital audio signal. Is output.

The data compression circuit 13 time-divisionally divides the digital audio signal output from the analog-to-digital conversion circuit 12 into 11.61 [msec] cycles, and performs data compression processing on the digital audio signal in units of blocks. .

The time correction circuit 14 includes the system control circuit 1
5, the digital audio signal output from the data compression circuit 13 is converted into one digital audio signal DA1 and output to the data bus BUS.

That is, as shown in FIG. 5, the time correction circuit 14 comprises four channels of audio signals SA1 to SA4 input from the connector 4 (FIGS. 5A1 to 5A4).
Is recorded, each block having a period of 11.61 [msec] is sequentially and cyclically time-division multiplexed to form a digital audio signal DA1 (FIG. 5B).

In this case, in the magneto-optical disk device 1, one sound group is formed by two consecutive blocks of the digital audio signal DA1 (FIG. 5).
(C)), eleven consecutive sound groups are allocated to two sectors (FIG. 5 (D)). Also, three clusters L and sub-sectors S are added before and after 32 consecutive sectors to form one cluster (FIG. 5E). In this case, a sound frame is formed by 22 sound groups.

On the other hand, as shown in FIG. 6, the time correction circuit 14 includes two channel audio signals SA1 to SA.
Similarly, when recording A2 (FIGS. 6 (A1) to 6 (A2)), similarly, each block having a period of 11.61 [msec] is sequentially and cyclically time-division multiplexed and the digital audio signal DA is recorded.
1 (FIG. 6B).

In this case, in the magneto-optical disk drive 1, as in the case of four channels, one sound group is formed by two consecutive blocks (FIG. 6C), and 11
Sound group is assigned to two sectors (Fig. 6
(D)). Also, a link sector L and a sub-sector S are added before and after 32 consecutive sectors to form one cluster (FIG. 6).
(E)) is formed. Note that, in this case, the sound frame is similar to the stereo case described above with reference to FIG.
It is formed by 11 sound groups.

On the other hand, as shown in FIG. 7, when recording the audio signal SA1 of one channel (FIG. 7 (A)), the time correction circuit 14 sequentially repeats each block of 11.61 [msec] cycle. The digital audio signal DA1 (FIG. 7B) is formed by time arrangement.

Also in this case, in the magneto-optical disk device 1, 4
As in the case of the channel, one sound group is formed by two consecutive blocks, and 11 sound groups are assigned to two sectors (FIG. 7C). A link sector L and a subsector S are added before and after 32 consecutive sectors to form one cluster (FIG. 7D). Also in this case, the sound frame is formed by 11 sound groups, as in the case of the stereo described above with reference to FIG. The number of channels is U
The mode data (TR) assigned to each slot of the TOC
ACK MODE) is set by the system control circuit 15 and recorded on the magneto-optical disk.

On the other hand, at the time of reproduction, the time correction circuit 14
Is controlled by the system control circuit 15 to demodulate the digital audio signal DA1 sequentially input from the data bus BUS into the original digital audio signal in reverse to the recording operation in accordance with the format of the audio signal recorded on the magneto-optical disk. And output.

The data decompression circuit 18 is a data compression circuit 1
Contrary to 3, during data reproduction, the data-compressed digital audio signal output from the time correction circuit 14 is decompressed and output. Digital-to-analog conversion circuit (D /
A) 19 performs digital-to-analog conversion processing on the digital audio signal output from the data decompression circuit 18,
The audio signals SA1 to SA4 are output.

The memory 20 is formed of a large-capacity memory circuit that operates under the control of the memory control circuit 21, and receives a digital audio signal DA1 output from the time correction circuit 14 via the data bus BUS during recording. And hold. Further, the memory 20 includes a memory control circuit 21
, The link sector L, the subsector S, the header of each sector, the cluster address, etc. are stored. With this, these data are added to the digital audio signal DA1 to record the cluster data described above with reference to FIGS. To form The memory 20 outputs the recording data to the data bus BUS in cluster units at a timing synchronized with the rotation of the magneto-optical disk.

On the other hand, at the time of reproduction, the memory 20 inputs decoded data output from the signal processing circuit 23 via the data bus BUS in cluster units and temporarily stores the decoded data. Further, extra data such as a header is removed from the decoded data to output a digital audio signal DA1.

On the other hand, at the time of editing, under the control of the memory control circuit 21, the memory 20 inputs decoded data output from the signal processing circuit 23 in cluster units and temporarily stores the decoded data. Further, according to the contents of the editing processing, the address is switched in units of blocks of the digital audio signal DA1 and updated by the data output from the memory control circuit 21, thereby processing the temporarily held decoded data. Further, the memory 20 outputs the temporarily held decoded data to the signal processing circuit 23 via the data bus BUS.

The disk unit 22 drives the magneto-optical disk stored in the disk cassette 3 to rotate, and irradiates a laser beam from the optical pickup in this state. Further, the disk unit 22 receives the return light of the laser beam by the optical pickup, and based on the reception result, rotationally drives the magneto-optical disk at a predetermined rotation speed with reference to the pre-groove of the magneto-optical disk. Detect the address of

Further, the disk unit 22 performs tracking control and focus control based on the result of receiving the return light, and moves the optical pickup to the recording / reproducing position specified by the system control circuit 15 based on the address of the laser beam irradiation position. Seek. With this seek, the disk unit 22 accesses the PTOC and UTOC when loading and unloading the magneto-optical disk, and accesses the program area during recording / reproduction, editing, and so on.

Further, the disk unit 22 generates a reproduction signal whose signal level changes in accordance with the change in the deflection surface of the return light, and generates a binary signal from the reproduction signal. Further, the disk unit 22 generates a reproduced clock from the binarized signal, and sequentially latches the binarized signal with the reproduced clock to generate reproduced data.

On the other hand, when recording, the disk unit 2
Reference numeral 2 denotes a recording / reproducing position designated by the system control circuit 15, which intermittently raises the light amount of the laser beam.
In this state, the disk unit 22
The modulation coil is driven by the modulation data output from the
A modulation magnetic field generated by the modulation coil is applied to a laser beam irradiation position. Thus, the disk unit 22 records the modulation data by applying the thermomagnetic recording method.

On the other hand, when editing, the disk unit 2
2 repeats the above-described processing at the time of reproduction and the processing at the time of recording as necessary, thereby outputting reproduced data to the signal processing circuit 23 and modulating the modulated data output from the signal processing circuit 23 Record on a magnetic disk.

The signal processing circuit 23 includes the disk unit 2
After decoding the reproduction data output from the reproduction data 2 and performing error correction processing, PTOC and UTOC are obtained from the reproduction data.
And demodulated data are generated and output to the data bus BUS. On the other hand, at the time of recording, the signal processing circuit 23 performs an encoding process after adding an error correction code to the recording data output to the data bus BUS, as opposed to at the time of reproduction, thereby generating modulated data. To the disk unit 22. Further, at the time of editing, the above-described processing at the time of reproduction and processing at the time of recording are repeated as necessary, thereby outputting decoded data to the memory 20 and generating modulated data from the recorded data output from the memory 20. And output.

The TOC memory 24 stores PTOC and UT output from the signal processing circuit 23 when a magneto-optical disk is loaded.
The OC data is input and held, and the held data is output to the system control circuit 15 as needed. At the time of recording and editing, the data held by the system control circuit 15 is output to the system control circuit 15 at the request thereof, and the held data is updated. Further, when the magneto-optical disk is ejected, the TOC memory 24 outputs the held UTOC data to the signal processing circuit 23, and updates the UTOC of the magneto-optical disk with the UTOC data.

The system control circuit 15 is composed of a microcomputer for controlling the operation of the entire magneto-optical disk device 1, and switches the entire operation in response to the operation of the operators 5, 7, 8, and 10. The display on the display panel 9 is switched.

That is, when the disk cassette is loaded, the system control circuit 15 drives the disk unit 22 to load the PTOC data into the TOC memory 24. Further, the PTOC loaded into the TOC memory 24
Then, the disk unit 22 is driven in accordance with the data of (1), and the following UTOC data is loaded into the TOC memory 24.

In this state, when the operator is operated to set the recording mode, the start address and the end address of the recordable area are sequentially detected by sequentially following the slots by the pointer (P-FRA) of the UTOC. The disk unit 22 is driven by the start address and the end address. Further, the system control circuit 15 sequentially accesses the recordable area of the magneto-optical disk by setting the operation of the time correction circuit 14 and the like to the operation mode at the time of recording, and transfers the sequentially input audio signals to the magneto-optical disk. Record. At this time, the system control circuit 15 drives the display panel 9 to display the recording time, the remaining recordable time, and the like.

When the recording of one audio signal is completed, the system control circuit 15 updates the UTOC data stored in the TOC memory 24. That is, the pointer (P-TNO1,..., P-TNO255) and the corresponding slot are updated with respect to the part in which the audio signal of this music has been recorded, thereby registering the audio signal of this music in the UTOC. Also, the pointer (P-FRA) indicating the recordable area is updated, and the part that records the audio signal is thereby deleted from the recordable area.

On the other hand, when the reproduction mode is set,
By sequentially following the slots specified by the pointers (P-TNO1,..., P-TNO255), the start address and end address of the corresponding slots are sequentially detected, and the disk unit 22 is driven by the detected addresses. Further, the system control circuit 15 sets the operation of the time correction circuit 14 and the like to the operation mode at the time of reproduction, thereby sequentially reproducing the audio signals recorded on the magneto-optical disk and outputting the signals to the external device.

At this time, the system control circuit 15
From the UTOC data stored in the memory 24, the sector 0
In accordance with the contents recorded in the predetermined UTOC other than the above, the title of the song to be played, the song number, the playback time, and the like are displayed on the display panel 9 and the song or channel designated by the user is selectively played back.

Further, the system control circuit 15 accepts setting of editing points such as an in point and an out point by the operation of the jog dial 8 and the operation of the operating element 7 by the user.
When reproduction by the edit point is instructed, the audio signal specified by the edit point is selectively reproduced.

(1-1) Editing Process When the user selects an editing operation mode, the system control circuit 15 responds to the user's operation to edit the music in units of songs and edit a part of the music. Execute processing and editing processing between channels.

The song-by-song editing process is a so-called UTOC editing process executed in units of UTOC pointers (P-TNO1,..., P-TNO255). Executed when is selected. In the editing process for each music piece, the system control circuit 15
In response to a user's selection operation, processing of copy, move, exchange, delete, combine, or split is executed.

Here, as shown in FIG. 8, copying is a process of copying a music selected by the user to a recordable area of the magneto-optical disk. When the music is specified, the system control circuit 15 stores the TOC memory 24 in the TOC memory 24. The start address S1 and the end address E1 of this song are detected from the corresponding pointers (P-TNO1,..., P-TNO255) (FIG. 8)
(A)). Further, the system control circuit 15 drives the disk unit 22 based on the start address S1 and the end address E1, and reproduces the magneto-optical disk in cluster units within a range that can be stored in the memory 20,
The demodulated data obtained from the signal processing circuit 23 is stored in the memory 20
To be stored.

The system control circuit 15 controls the memory 20
To the demodulated data held in
After updating the cluster address, the sound group address, and the like with reference to No. 3, the data is output to the signal processing circuit 23, and the audio data is recorded in the copy destination (FIG. 8B). The system control circuit 15 repeats the reproduction and recording processes for the music specified by the user, and in this case, copies the first music as the third music.

Subsequently, the system control circuit 15 accesses the TOC memory 24 and registers the part having the start address S3 and the end address E3 of the third music piece (that is, forms a slot constituting the third music piece as necessary). ), And the corresponding pointers (P-TNO1, ……, P-TNO25
5) is registered, and the slot of the third music piece is deleted from the slot designated by the pointer (P-FRA) of the recordable area.

On the other hand, as shown in FIG.
In the process of moving the position of the designated song, the system control circuit 15 accesses the TOC memory 24 when the song is designated, and the parts designated by the corresponding pointers (P-TNO1,..., P-TNO255) Rewrite the address of That is, when the first, second, and third slots are sequentially designated by the first, second, and third pointers P-TNO1, P-TNO2, and P-TNO3 (FIG. 9A), the first , Second and third pointers P-TN
The address is rewritten by O1, P-TNO2, and P-TNO3 so as to designate the second, third, and first slots, and the order of the songs is changed (FIG. 9B).

On the other hand, as shown in FIG. 10, the exchange is a process of exchanging the designated music (FIG. 10).
(A) and (B)), similarly to the case of the movement, the system control circuit 15 sets the pointer (P-TN
O1, ..., P-TNO255) to rewrite the addresses of the parts specified, and change the order of the songs.

On the other hand, as shown in FIG. 11, the erasing is a process for erasing a designated music piece, and the system control circuit 1
No. 5 executes a process opposite to the updating process of the TOC memory 24 executed in the copy for the specified music piece.

That is, the system control circuit 15
Accessing the memory 24, the pointer (P-TNO1,..., P-TNO255) for specifying the part of the first music (consisting of the start address S1 and the end address E1) is released, and the specification of the part is released. Recordable area pointer (P-
The start address S
1. Add a slot consisting of the end address E1.

On the other hand, as shown in FIG. 12, the combine is a process of combining designated songs (FIGS. 12A and 12B), and in this case, the system control circuit 15 Is specified, the TOC memory 24 is accessed, and for the slot specified by the pointer P-TNO1 of the first song, the link pointer LINK-P of this slot is specified.
, An address for designating the slot of the second music is set.
Further, the pointer P-TNO2 is updated so that the slot of the third music is designated by the pointer P-TNO2 of the second music.

On the other hand, as shown in FIG. 13, division is a process of dividing one song into a plurality of songs. In this case, when the first song is designated, the system control circuit 15 accesses the TOC memory 24. Then, the end address E11 of the slot of the first music piece is updated by operating the jog dial 8 with the address of the editing point input. Further, the system control circuit 15 determines a start address S11 and an end address E1 corresponding to the end address E11.
, A new part is registered, and this part is designated by the second pointer P-TNO2.

On the other hand, the process of editing a part of a song is a so-called UTOC editing process of editing an audio signal in units of a sound group, which is a recording unit on a magneto-optical disk. The user can set the IN point IN and OUT point OU in a single song in sound group units.
This is executed when the editing mode is selected by setting T or the like. The system control circuit 15 executes insert, move, exchange, or delete processing in response to a user's selection operation.

Here, as shown in FIG. 14, the insert is a process of inserting a performance separately into one music piece. In this case, the system control circuit 15 indicates the insertion position in advance by operating the jog dial 8. The designation of the processing point DEST is received in advance, and the performance to be inserted is recorded on the magneto-optical disk in advance. The system control circuit 15 forms the part P2 based on the performance recorded on the magneto-optical disk in advance, and the part P1 of one music piece with the processing point DEST as a boundary.
Is divided into two parts P11 and P12,
The contents of the TOC memory 24 are updated. Further parts P1
The link pointers corresponding to the parts P11 and P2 are updated so that 1, P2 and P12 can be sequentially traced.

On the other hand, the movement is a process of cutting out a part and moving it in the music as shown in FIG. 15. In this case as well, the system control circuit 15 operates the jog dial 8 to set the in-point in advance. The designation of the IN and OUT points OUT and the processing point DEST indicating the destination is accepted. The system control circuit 15 divides one music part into four parts P1, with the in-point IN, the out-point OUT, and the processing point DEST as boundaries.
P2, P3, and P4, and each part is stored in the TOC memory 2
Register to 4. Further, so that the part between the IN point IN and the OUT point OUT is reproduced following the processing point DEST,
Set a link pointer between each part.

On the other hand, exchange is a process of exchanging parts in one music, as shown in FIG.
In this case as well, the system control circuit 15 updates the contents of the TOC memory 24 and executes the exchange processing, as in the case of the movement.

On the other hand, as shown in FIG. 17, the erasing is a process of erasing a part of one music piece. In this case, the system control circuit 15 also operates the in-point IN indicating the erasing start position and the end position. And the designation of the out point OUT is received in advance. The system control circuit 15 divides one music part into three parts P1 and P with the boundary between the IN point IN and the OUT point OUT.
2 and P3, and each part is registered in the TOC memory 24. Further, for the part between the IN point IN and the OUT point OUT, a link pointer of a corresponding socket is set so that the part can be traced with a pointer (P-FRA) indicating a recordable area, and IN and OUT are set at the IN point. A link pointer is set between the parts P1 and P3 so that the parts between the points OUT are omitted and reproduced.

On the other hand, the editing process between channels is as follows.
When four channels of audio signals are recorded on the magneto-optical disk, the editing process is performed between the four channels of audio signals at a time interval of a sound group unit. This processing is executed when the user sets the IN point IN, the OUT point OUT, and the like and selects the editing mode in units of sound groups. This editing process is executed, for example, when a performance by an individual musical instrument is assigned to each channel, and a part of each performance is repeated, replaced, or added to another music piece.

On the other hand, when a two-channel audio signal is recorded on a magneto-optical disk, or when a one-channel audio signal is recorded, the editing process between the channels is performed on the four-channel audio signal recorded on the magneto-optical disk. The processing is performed in the same manner as when processing the audio signal of the channel.

That is, when recording audio signals of four channels on a magneto-optical disk, the magneto-optical disk drive 1
Then, the four-channel audio signal is time-division multiplexed to form a digital audio signal DA1, and each block of the digital audio signal DA1 is sequentially and cyclically assigned to a sound group (FIG. 5). On the other hand, when recording an audio signal of two channels on a magneto-optical disk, the magneto-optical disk device 1 forms a digital audio signal DA1 by time-division multiplexing the audio signals of the two channels. Are sequentially and cyclically assigned to sound groups (FIG. 6). When recording a one-channel audio signal on a magneto-optical disk, the magneto-optical disk device 1 forms the digital audio signal DA1 by dividing the one-channel audio signal into blocks by time division.
Each block of A1 is sequentially and cyclically assigned to a sound group (FIG. 7).

Thus, the magneto-optical disk device 1 executes editing processing between channels on the basis of recording audio signals of four channels on the magneto-optical disk.
When a two-channel audio signal and a one-channel audio signal are recorded on a magneto-optical disk, a four-channel audio signal is recorded on the magneto-optical disk with respect to the time-division multiplexed or time-division digital audio signal DA1. In the same manner as in the case of the above, the editing process between the channels is executed, thereby improving the usability.

In the process of editing between channels, the system control circuit 15 executes copy, move, exchange, or delete processing in response to a user's selection operation.

As shown in FIG. 18, the copy in the editing process between the channels is performed by converting the audio signal between the IN point IN and the OUT point OUT of the channel specified by the user into the processing point DEST of the channel specified by the user.
The copying process is described below (FIGS. 18A and 18B).

The system control circuit 15 drives the disk unit 22 by issuing address data on the basis of the in-point IN and the out-point OUT, and switches the editing source specified by the in-point IN and the out-point OUT to a predetermined cluster. Play in units. Further, the system control circuit 15 stores the reproduced decoded data of the editing source in the memory 20 according to the sector structure described above with reference to FIG.

The system control circuit 15 sets the processing point DE
The disk unit 22 is driven based on ST, and an editing destination below the processing point DEST is reproduced by the same data amount as the decoded data held in the memory 20. Further, the system control circuit 15 holds the reproduced decoded data of the editing source in the memory 20 in cluster units by the sector structure described above with reference to FIG.

Subsequently, the system control circuit 15 updates the decoded data of the editing destination stored in the memory 20 in accordance with the setting of the user. That is, the system control circuit 15
In this case, the decoded data of the first channel is copied to the region below the processing point DEST at the third channel of the editing destination in units of a sound group that is a unit of data compression, thereby rewriting the decoded data of the editing destination. . Subsequently, the system control circuit 15 outputs the rewritten decoded data of the editing destination to the signal processing circuit 23 for each cluster, and records the overwritten data at the editing destination.

The system control circuit 15 sequentially performs the reproduction, updating, and updating from the IN point IN to the OUT point OUT according to the data amount between the IN point IN and the OUT point OUT and the data amount that can be held in the memory 20. Repeat the recording process,
With this, a block consisting of the minimum unit of the digital audio signal (that is, when a 4-channel audio signal is recorded, it corresponds to two sound groups) is used as a unit, and at a different position between channels and further on the time axis. Copy the user specified part.

When the inter-channel editing processing is performed on a magneto-optical disk on which audio signals of two channels and one channel are recorded, the system control circuit 15 similarly stores the editing destination and the editing in the memory 20 in cluster units. After reading the original, in this case, the editing destination is updated by the editing source in units of one sound group, and the updated demodulated data is recorded in the editing destination.

On the other hand, as shown in FIG. 19, the movement in the editing process between the channels is performed by converting the audio signal between the IN point IN and the OUT point OUT of the channel specified by the user into the processing point of the channel specified by the user. DE
Copy below ST, IN point IN, OUT point OU
This is a process of setting the channel corresponding to T to silence (FIGS. 18A and 18B). System control circuit 15
Drives the disk unit 22 to reproduce the editing source and the editing destination in a predetermined cluster unit, as in the case of copying, and stores the reproduced decoded data of the editing source and the editing destination in the memory 20.

In response to the user's selection, the system control circuit 15 rewrites the decoded data of the editing destination stored in the memory 20 with the decoded data of the editing source, and writes the rewritten decoded data of the editing destination into the original recording data. Overwrite and record at the position. In addition to this, the system control circuit 15 also rewrites the corresponding edited destination channel with silent decoded data via the memory control circuit 21 with respect to the edited decoded data held in the memory 20. The original decrypted data is overwritten and recorded at the original recording position.

The system control circuit 15 sequentially performs the reproduction, updating, and updating from the in-point IN to the out-point OUT in accordance with the amount of data between the IN point IN and the OUT point OUT and the amount of data that can be held in the memory 20. Repeat the recording process,
With this, a block consisting of the minimum unit of the digital audio signal (that is, when a 4-channel audio signal is recorded, it corresponds to two sound groups) is used as a unit, and at a different position between channels and further on the time axis. Move a user specified part.

When the moving process is performed on a magneto-optical disk on which audio signals of two channels and one channel are recorded, the system control circuit 15 stores the editing destination in the memory 20 in cluster units in the same manner as in the case of copying. And the editing source is read and processed.

On the other hand, as shown in FIG. 20, the exchange in the editing process between the channels is performed by converting the audio signal between the IN point IN and the OUT point OUT of the channel specified by the user into the processing point of the channel specified by the user. This is a process for exchanging with DEST and below (FIG. 20).
(A) and (B)). The system control circuit 15 drives the disk unit 22 to reproduce the editing source and the editing destination in a predetermined cluster unit when moving, and decodes the reproduced decoded data of the editing source and the editing destination in the memory 2 according to the sector structure.
Hold at 0.

Further, after rewriting the decoded data held in the memory 20, the data is overwritten and recorded at the original recording position.
At this time, the system control circuit 15 rewrites the editing destination and the editing source audio data with the editing source and the editing destination audio data, respectively. The system control circuit 15
The reproduction, update, and recording processes are successively repeated, whereby a block that is the minimum unit of the digital audio signal (that is, when a 4-channel audio signal is recorded, corresponds to two sound groups) is used as a unit.
The parts specified by the user are exchanged between channels and at different positions on the time axis.

It should be noted that the system control circuit 15 also performs exchange processing on a magneto-optical disk on which audio signals of two channels and one channel are recorded.
Is the memory 20 in cluster units as in the case of copy.
, The editing destination and the editing source are read and processed.

On the other hand, the erasure in the editing process between the channels is a process of setting the audio signal between the IN point IN and the OUT point OUT of the channel specified by the user to be silent as shown in FIG. 21 (A) and (B)). In this case, the system control circuit 15 drives the disk unit 22 to reproduce the editing source in predetermined cluster units, and stores the reproduced decoded data in the memory 20.

Further, for the channel specified by the user, the decoded data stored in the memory 20 is rewritten with the silent decoded data, and then overwritten and recorded at the original recording position. As a result, the system control circuit 15 sets the part specified by the user to silence in units of audio signal blocks.

(1-2) Ando Process After performing such various editing processes, the system control circuit 15 presses the Ando / Redo operator 7A in the operator 7 and presses the same. In response to the operation, the processes of ANDO and REDO are repeated.

Here, the system control circuit 15 performs the editing processing in units of music pieces and the editing processing in units of sound groups in which the audio signal of the editing destination is not lost by the editing processing.
The immediately preceding UTOC held in the UTOC memory 24 is
The temporary state is temporarily held in a retreat area provided in the TOC memory 24, and when the operator 7A of the ANDO is pressed, the immediately preceding state is reproduced by exchanging the retreated UTOC with the original UTOC, Executes undo and redou processing.

In the exchange in editing between channels, the exchange process is repeated between the edit source and the edit destination, thereby executing the undo and redo processes.

On the other hand, in copying, moving, and erasing in editing between channels, the audio signal recorded on the magneto-optical disk is lost, and the system control circuit 15 converts the lost audio signal into a sound in advance. Evacuation is performed in units of groups, and the immediately preceding state is reproduced by the evacuated sound group, and the processes of undo and redou are executed.

At this time, when the user selects copy, move, or erase in editing between channels, the system control circuit 15 executes the processing procedure shown in FIG. 1 at a predetermined cycle and notifies the user whether or not the undo processing can be performed in advance. I do.

That is, the system control circuit 15 proceeds from step SP1 to step SP2, and detects the capacity A of the evacuable area. Here, as shown in FIG. 22, the system control circuit 15 accesses the TOC memory 24, sequentially follows the slot from the pointer (P-EMPTY) indicating the recordable area, and thereby changes the recordable area to the capacity of the saveable area. A is set (FIG. 22A).

At this time, in consideration of the case where the editing process is repeated, the system control circuit 15 records the saved audio signal on the magneto-optical disk and traces the slot of this audio signal from the pointer (P-FRA). If not, the capacity of the saved audio signal is added to the recordable area to set the capacity A of the saveable area. The capacity of the audio signal is detected by the address of the corresponding part or from the IN point IN and OUT point OUT in the immediately preceding editing process. Whether or not this audio data can be traced from the pointer (P-FRA) is determined by tracing the slot sequentially from the pointer (P-TNOl,..., P-TNO255). This is executed by detecting a slot set in the mode data (TRACKM0DE).

Subsequently, the system control circuit 15 proceeds to step SP3, and stores the capacity of the saveable area in a built-in work area. Further, the system control circuit 15 proceeds to step SP4, and detects the capacity B of the edit setting area by detecting the number of sound groups of data lost by editing from the in point IN and the out point OUT set by the user.

Subsequently, the system control circuit 15 proceeds to step SP5, where it determines whether or not the capacity A of the evacuable area is larger than the capacity B. If a positive result is obtained, the data lost by editing in this case is deleted. Since the sound group can be evacuated to the evacuable area, the process proceeds to step SP6, and the light emitting diode arranged on the Ando operator 7A is turned on. Accordingly, the system control circuit 15 illuminates the window 7B of the operation element 7A in green, and notifies the user that the undo processing can be performed.

On the other hand, if a negative result is obtained in step SP5, the system control circuit 15 proceeds to step SP7 and turns off the light emitting diode arranged on the Ando operator 7A. Thereby, the system control circuit 1
5 stops the illumination of the window 7B and notifies the user that the undo process cannot be performed.

When the user is notified in this manner, the system control circuit 15 proceeds to step SP6 or step S6.
The process moves from step P7 to step SP8 and ends this processing procedure. As a result, the user can confirm in advance whether or not the undo processing is possible and execute the editing processing, and the spectroscopic magnetic disk device 1 can appropriately perform the editing processing.

[0107] Note that the above-mentioned UTOC editing unit of music,
In editing in units of sound groups, since there is no audio signal lost by editing as in the editing between channels, the system control circuit 15 always illuminates the window 7B of the operation device 7A in green and gives the user an undo process. Notify that you can do it. Thus, in the magneto-optical disk device 1, regardless of which editing process is selected by the user, it is possible to execute the undo and redo processes at the same operation interval.

That is, the system control circuit 15 executes the processing procedure shown in FIG. 23 when the user sets the editing conditions and then operates the execution operator. Here, the system control circuit 15 performs steps SP11 to SP1.
The process proceeds to 2, where it is determined whether or not the capacity A of the evacuation area is larger than the capacity B. If a positive result is obtained, the process proceeds to step SP13.

Here, the system control circuit 15 accesses the TOC memory 24 and rewrites the contents of the UTOC, thereby setting the previously saved audio signal parts in the recordable area. Thereby, the system control circuit 1
5 performs processing corresponding to the case where the capacity of the saved audio signal is added to the capacity of the recordable area and the capacity A of the saveable area is set.

Subsequently, the system control circuit 15 proceeds to step SP14, where data lost by editing is recorded in a recordable area in units of sound groups (FIG. 22).
(A)). Here, the system control circuit 15 drives the disk unit 22 to output the IN point IN and the OUT point OUT.
The audio signal corresponding to the data amount between
The data is reproduced from T and stored in the memory 20, and the demodulated data stored in the memory 20 is recorded in a recordable area. Further, when the data amount of the audio signal to be saved is larger than the capacity of the memory 20, the reproduction and recording processes are repeated to save the data lost by editing. Incidentally, in the erasing process, the in-point IN and the out-point OUT to be erased are replaced with the data after the processing point DEST.
Interim data is saved.

Further, the system control circuit 15 accesses the TOC memory 24, registers the part in which the audio signal has been saved in the slot, and sets the corresponding address in the pointer. At this time, the system control circuit 15 sets the backup flag of the mode data (TRACK MODE) to register that this slot is a slot in which the audio signal has been saved. In this way, when the user simply operates the playback operator, the system control circuit 15 does not play back the part for which the backup flag is set, and displays the song name and song number on the display panel 9. The entire operation is controlled so as not to prevent the user from recognizing the saved audio signal, so that the user is not confused by the saved audio signal.

When all the lost data is saved in this way, the system control circuit 15 proceeds to step SP15 and executes the editing process set by the user (FIG. 22).
(B)), the process proceeds to step SP16, and this processing procedure ends. Thus, when the user operates the Ando operator 7A after completing this processing, the system control circuit 15 returns the editing destination and the editing source to the immediately preceding state by using the saved audio signal ( FIG.
(C)).

On the other hand, if a negative result is obtained in step SP12, the user recognizes that the undo processing cannot be performed and operates the operation operator, so that the process directly proceeds from step SP12 to step SP15, and After executing the editing process without saving the signal, the process proceeds to step SP16.

Further, in the process of updating the UTOC when there is a write request when the disk cassette 3 is ejected, the system control circuit 15 sets a pointer (P-pointer) indicating the recordable area for the part for which the backup flag is set. After the TOC memory 24 is updated, the UTOC of the magneto-optical disk is updated so that it can be traced by the FRA) and it is difficult to trace by the pointer (P-TNO1,..., P-TNO255) specifying the music. Update.

(2) Operation of the Embodiment In the above configuration, when the disk cassette 3 is loaded into the magneto-optical disk device 1, the disk unit 22 reproduces the management area of the magneto-optical disk, and the PTOC of this management area is reproduced. , UTOC are stored in the TOC memory 24.

Thereafter, when the magneto-optical disk drive 1 is set to the recording mode, the audio signals SA1 to SA4 input from the external device are converted to the analog-to-digital converter 1
After being converted into a digital audio signal in 2,
The data is input to the data compression circuit 13, where it is time-divided into 1
The data is divided into blocks in units of 1.61 [msec], and each block is time-axis-compressed by data compression processing.

The data-compressed digital audio signal is sequentially and cyclically time-division multiplexed in the subsequent time correction circuit 14 in units of blocks, thereby generating a one-channel digital audio signal DA1. At this time, the audio signal SA of four channels
In the case of recording 1 to SA4, the digital audio signals of four channels that have been time-axis-compressed are sequentially and cyclically switched on a block-by-block basis to generate a digital audio signal DA1 (FIG. 5). When recording two-channel audio signals SA1 and SA2,
The time-axis-compressed two-channel digital audio signals are sequentially and alternately switched in units of blocks to generate a digital audio signal DA1 (FIG. 6). When recording a one-channel audio signal, a digital audio signal DA1 is generated from a one-channel audio signal obtained by simply time-divisionally compressing data (FIG. 7).

The digital audio signal DA1 generated in this way is input to the memory 20 via the bus BUS, where the digital audio signal DA1
One block is arranged to form two sound groups, and an address, a header, and the like are added to form a data structure of a sector. At this time, the digital audio signal DA1 is arranged so that two sectors are formed by the eleven sound groups. When one cluster of sectors is formed, the link sector, the subsector, and the subsector are synchronized with the rotation of the magneto-optical disk. The data is output to the signal processing circuit 23 as recording data together with data such as a header.

Here, the recording data is added with an error correction code, encoded, and converted into modulated data. A modulated magnetic field is generated by the modulated data, and the audio signals SA1 to SA4 are transferred to a magneto-optical disk by thermomagnetic recording. Be recorded.

The audio signal recorded on the magneto-optical disk in this way is stored in the UC stored in the TOC memory 24.
As the TOC is updated, the song name, song number, and the like are displayed on the display panel 9 in response to the user's operation.

At this time, in the magneto-optical disk device (FIG. 26), the mode data (TRACK MODE) is detected by the system control circuit 15 for the slot corresponding to the pointer (P-TNO1,..., P-TNO255). For audio signals for which the backup flag is set in the mode data (TRACK MODE), the display of the song name, song number, etc. is stopped. As a result, of the audio signals recorded on the magneto-optical disk, the saved audio signal with the backup flag set is held so that the user cannot recognize it, and confusion of the user is effectively avoided.

When the user selects a music piece and selects the reproduction mode in such a state, reproduction data is generated from a reproduction signal obtained from the magneto-optical disk, and the reproduction data is decoded in the signal processing circuit 23. The decoded data obtained by this decoding is temporarily stored in the memory 20, and the extra data such as the header is removed, and the decoded data is input to the time correction circuit 14 by the digital audio signal DA1.

Here, the digital audio signal DA1
Is converted into a digital audio signal of the original number of channels in reverse to the recording mode in accordance with the mode data (TRACK MODE), and is then subjected to data expansion in the subsequent data expansion circuit 18. Further, the digital audio signal whose data has been expanded is converted into an analog signal by the digital / analog conversion circuit 19 and output.

In the reproduction of the audio signal recorded on the magneto-optical disk, the audio signal for which the backup flag is set is left without being reproduced, so that the retracted audio signal with the backup flag set is set. For, the user is prevented from listening, and confusion is effectively avoided.

On the other hand, when the user designates a song and selects the editing mode, the editing process is executed for each song, and the copy processing is performed mainly by so-called UTOC editing for updating the UTOC stored in the TOC memory 24. , Move, exchange, delete, combine, and split (FIGS. 8 to 13).

When the user sets the IN point IN, OUT point OUT, and the like in a single song in units of sound groups and selects an editing mode, the editing process in units of sound groups is performed by the same UTOC editing. Is executed, and the processing of insert, move, exchange or delete selected by the user is executed (FIGS. 14 to 17).

In such editing processing for each music piece and each sound group, the UTOC at the start of editing is stored in the save area in the TOC memory 24, and after executing the editing processing, without executing the subsequent editing processing. When the user operates the operator 7A of ANDO, the UTOC immediately before the start of the process is reproduced by the UTOC stored in the save area. As a result, the state immediately before the start of editing is reproduced in the reproduced UTOC, and the undo process is executed.

When the UTOC immediately before the start of the process is reproduced, the UTOC up to that time is stored in the save area, and when the user operates the operator 7A of ANDO again, the edit processing is performed using the UTOC stored in the save area. Is reproduced. As a result, the state after the editing process is reproduced in the reproduced UTOC, and the redrawing process is executed.

On the other hand, when the user selects the edit mode by setting the IN point IN, the OUT point OUT, etc. in units of a sound group within one song or between songs, an editing process between channels is performed. Is executed.

In the editing process between the channels, when copying is designated, the audio signal of the editing destination, which is the copy destination after the processing point DEST, is reproduced from the magneto-optical disk by a predetermined amount in cluster units, and The audio signal between the IN point IN and the OUT point OUT is reproduced from the magneto-optical disk by the corresponding data amount and stored in the memory 20.

At this time, these audio signals are stored in the memory 20 in the sector structure recorded on the magneto-optical disk.
The audio signal of the channel specified by the user from the editing source is selected in units of sound groups, and the sector of the editing destination is updated by this audio signal. As a result, in the memory 20, the audio signal of the editing source is copied to the editing destination in units of sound groups between the channels, and the copied editing destination is recorded at the original recording position of the magneto-optical disk. At the editing source and the editing destination, the reproduction and recording processes are repeated as many times as necessary, and the IN point IN and the OUT point OUT
Audio signal is copied to the editing destination (see FIG. 1).
8).

On the other hand, in the case of movement (FIG. 19), in addition to the update processing of the edit destination in this copy, the memory 20
Above, silent decoded data is recorded on the channel of the editing source. When recording the editing destination on a magneto-optical disk,
At the same time, the editing source is also recorded at the original recording position on the magneto-optical disk. As a result, in the magneto-optical disk, in the memory 20, the audio signal of the editing source is transferred to the editing destination in units of sound groups between channels, and the editing destination and the editing source are located at the original recording positions of the magneto-optical disk. Recording and reproduction are repeated as many times as necessary, and the audio signal between the IN point IN and the OUT point OUT is transferred to the editing destination.

On the other hand, in the case of an exchange (FIG. 2)
0), instead of recording the silent signal during the movement, the memory 2
On 0, the audio signal of the editing destination is recorded at the editing source. As a result, in the magneto-optical disk, in the memory 20, the sound group is set in units of channels between channels.
After the audio signals of the editing source and the editing destination have been exchanged, the editing destination and the editing source are recorded at the original recording position of the magneto-optical disk, and the reproduction and recording processes are repeated as many times as necessary to obtain the IN point. The audio signal between IN and OUT point OUT is exchanged with the audio signal to be edited.

In the case of erasing (FIG. 21), only the original audio signal is reproduced from the magneto-optical disk and
0, and a silent signal is recorded on the memory 20 in the channel selected by the user. Further, the editing source is recorded in the original area of the magneto-optical disk, and the reproduction and recording processes are repeated as many times as necessary. As a result, a desired channel between the IN point IN and the OUT point OUT is deleted in units of sound groups.

By such an editing process between the channels, the magneto-optical disk device 1 records the performances individually on, for example, four channels, and performs editing work for recording the performance parts repeatedly as necessary. Editing work or the like for exchanging parts can be executed, and editing work intended by the user can be easily executed accordingly.

In the editing process between the channels, when the IN point IN and the OUT point OUT are set and the user selects the copying, moving, or erasing process, the system control circuit 15 performs the editing at a fixed cycle. The data amount B of the audio signal lost by the processing and the capacity A of the area where the audio signal can be saved are detected (FIG. 1). Further, based on a comparison result between the detected data amount B and the detected data amount A, it is determined whether or not the audio signal lost by the editing process can be saved. In this case, this illumination is turned off.

As a result, the magneto-optical disk device 1 notifies the user in advance whether or not the undo processing is possible and waits for the user's judgment. In other words, if it is difficult for users who need ANDO to perform ANDO,
After erasing unnecessary songs to increase the recordable area, the editing process can be continued again, so that the editing process can be appropriately continued. Also, for a user who does not need an undo, even if it is difficult to execute the undo, the editing work can be continued and the editing process can be appropriately continued.

In response to the user's selection, in the magneto-optical disk, when the user operates the editing execution operator, it is determined whether or not the audio signal lost by the editing process can be saved (FIG. 23). If possible, the audio signal lost by the editing is recorded in the save area in advance, and then the editing process is executed. If the evacuation is difficult, the editing process is executed directly.

When the audio signal is saved, the magneto-optical disk device 1 sets a backup flag and registers the saved audio signal part in the UTOC, thereby discriminating it from other audio signals.
At the time of reproduction, confusion of the user in displaying the song name, the song number, and the like is effectively avoided.

When the audio signal is saved, the UT
By the operation of the OC, the previously saved audio signal is erased, thereby effectively preventing a reduction in the recordable area when the saving process is repeated.

Further, when the disk cassette 3 is ejected, the parts of the evacuated audio signal are registered in the UTOC as recordable areas, so that even if the disk cassette 3 is reproduced and recorded by another magneto-optical disk device, The saved audio signal is held so that the user does not recognize it at all.

(3) Effects of the Embodiment According to the above configuration, when an audio signal is lost due to the editing process, it is determined in advance whether or not the lost audio signal can be saved and notified to the user. Thereby, it is possible to call the user's attention and execute an appropriate editing process according to the user's intention.

By notifying the user with the lighting of the operating element, the user who operates the operating element can be properly alerted. Thus, the configuration on the operation panel can be simplified.

When the audio signal is saved, the UT
By setting the saved audio signal area as a recordable area by operating the OC, it is possible to effectively avoid a decrease in the recordable area when the saving process is repeated.

(4) Other Embodiments In the above-described embodiment, a case has been described in which the user is notified that it is difficult to switch and undo the illumination of the operating element, but the present invention is not limited to this. The present invention is not limited thereto, and various display methods can be widely applied, for example, when notifying the user by switching the color of illumination, or when notifying by switching the display of the display panel.

Further, in the above-described embodiment, a case has been described in which the user is notified in advance that it is difficult to undo when the user sets the editing conditions, but the present invention is not limited to this. Instead, for example, a warning sound may be generated when an execution operator is operated, and the user may be notified accordingly. Note that, in this case, the editing process is executed when the user operates the operation element for repeated execution also by the warning sound, so that the editing process can be appropriately performed similarly to the above-described embodiment.

Further, in the above embodiment, the UTOC of sector 0,
Although the case where the backup flag is set in the mode data has been described, the present invention is not limited to this.
By setting the same flag or the like in the UTOC, the saved audio signal may be identified.

Further, in the above-described embodiment, a case has been described in which audio signals lost due to editing are saved in units of sound groups. However, the present invention is not limited to this, and audio signals lost due to editing are divided into clusters. The unit may be saved as a unit, or only the channel of the lost audio signal may be saved. In these cases, the above-described process of copying between channels may be executed to save the audio signal, or a new cluster may be created using only the audio to be saved.

Further, in the above-described embodiment, the case where the audio signal lost by editing is saved to the magneto-optical disk has been described. However, the present invention is not limited to this, and the working magneto-optical disk, hard disk device, memory May be evacuated. This makes it possible to omit the backup flag setting process described above.

Further, in the above-described embodiment, a case has been described where audio signals of four channels, two channels, and one channel are divided into blocks and recorded on a magneto-optical disk. However, the present invention is not limited to this, and various channels may be used. The present invention can be widely applied to a case where an audio signal is recorded by a number.

In the above-described embodiment, the case where the audio signal recorded on the magneto-optical disk is edited has been described. However, the present invention is not limited to this, and various types such as an optical disk, a hard disk device, a magnetic tape, and a semiconductor memory may be used. It can be widely applied when editing an audio signal recorded on a recording medium.

[0152]

As described above, according to the present invention, it is determined whether or not data lost by editing can be evacuated to a recordable area to notify the user that the data is lost. Even if it cannot be executed, the editing process can be performed appropriately.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a processing procedure of a system control circuit in a magneto-optical disk device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the magneto-optical disk device of FIG.

FIG. 3 is a plan view showing an operator of Ando.

FIG. 4 is a block diagram showing the magneto-optical disk device of FIG.

FIG. 5 is a time chart showing processing of an audio signal of four channels.

FIG. 6 is a time chart showing processing of a two-channel audio signal.

FIG. 7 is a time chart showing processing of an audio signal of one channel.

FIG. 8 is a time chart showing a copy process in editing in music units.

FIG. 9 is a time chart showing a movement process in editing in music units.

FIG. 10 is a time chart showing an exchange process in editing in music units.

FIG. 11 is a time chart showing an erasing process in editing on a music piece basis.

FIG. 12 is a time chart showing a combine process in editing in music units.

FIG. 13 is a time chart showing a division process in editing in music units.

FIG. 14 is a time chart showing an insert process in editing in units of sound groups.

FIG. 15 is a time chart showing movement processing in sound group unit editing.

FIG. 16 is a time chart showing exchange processing in sound group unit editing.

FIG. 17 is a time chart showing erasing processing in sound group unit editing.

FIG. 18 is a time chart showing a copy process in editing between channels.

FIG. 19 is a time chart showing movement processing in editing between channels.

FIG. 20 is a time chart showing exchange processing in editing between channels.

FIG. 21 is a time chart showing an erasing process in editing between channels.

FIG. 22 is a time chart for explaining an undo process;

FIG. 23 is a flowchart for explaining an undo process;

FIG. 24 is a time chart showing a structure of a cluster in a conventional magneto-optical disk device.

FIG. 25 is a table showing a sector structure of an audio signal.

FIG. 26 is a chart showing UTOC of sector 0;

FIG. 27 is a time chart for explaining recording of an audio signal;

FIG. 28 is a time chart for explaining editing of an audio signal;

[Explanation of symbols]

1 ... Magneto-optical disk device, 5, 7, 8, 10 ... Operator, 9 ... Display panel, 13 ... Data decompression circuit, 14
... time correction circuit, 15 ... system control circuit, 18 ...
... Data decompression circuit, 20 ... Memory, 21 ... Memory control circuit, 22 ... Disk unit, 23 ... Signal processing circuit

Claims (3)

[Claims] 1. An editing apparatus for editing an audio signal recorded on a recording medium, wherein the recording medium includes a program area for recording an audio signal, and a management area for recording management data for managing the program area. A recording / reproducing means for reproducing an audio signal from an editing source of the program area and recording the audio signal at an editing destination; and a recordable area of the program area based on the management data at the time of editing. Capacity detecting means for detecting the capacity of the storage area, comparing means for comparing the capacity of the recordable area detected by the capacity detecting means with the capacity of the editing source or the editing destination, and a comparison result of the comparing means. And a notifying unit for notifying whether or not the audio signal recorded at the editing destination can be saved. 2. The recording / reproducing means according to claim 1, wherein at the time of editing, based on a comparison result of said comparing means, a capacity of said recordable area is reduced by an audio signal lost by recording said editing source audio signal at an editing destination. 2. The editing apparatus according to claim 1, wherein when the data amount is larger than the data amount, the audio signal recorded in the edit destination is recorded in a recordable area of the program area, and the edit destination is saved. 3. The recording / reproducing means, when re-recording is instructed after editing, sets an area in which an edit destination has been saved as a recordable area and updates the management data. 3. The editing device according to claim 2, wherein