JP3435710B2 - Editing device and editing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and method for recording and reproducing music data on a recording medium such as a magneto-optical disk.

[0002]

2. Description of the Related Art Conventionally, when recording music data such as music on a recording medium such as an optical disk, a TOC (Table Of Co) formed on the innermost track of the disk is recorded.
In the recording area of index information called "contents", music number information such as the first music and the second music is recorded. By recording such song number information,
By specifying the song number of the song you want to play, you can determine the location where the song data of this song number was recorded from the index information,
It is possible to perform playback control such that playback can be performed immediately from the corresponding location.

[0003]

By the way, the song numbers indicated by such song number information are the first song, the second song, ... It is designed to be performed in order according to the song order from the song. For this reason, for example, when the second song is first played and then the first song is played, a setting for changing the playback order in advance to the playback device (setting called program playback) is required. There is a need to do. Such a setting for changing the playback order needs to be made every time this disc is played back. Even if this playback device can store the playback order setting, if the disc is set in another playback device, , It is necessary to set the playback order again. It has been inconvenient and time-consuming to perform such work for changing the reproduction order each time the reproduction is performed.

In view of the above points, the present invention has an object to provide an apparatus and method capable of changing the order of music pieces of a recording medium of this type.

[0005]

The present invention is directed to a recording medium.
Start address and end address of recorded information parts and
Start of other information parts that continue from the end address
A connection consisting of connection information indicating the location where the address is stored.
Address table with multiple information parts
The start address of the first part of the track
A track consisting of track number information indicating the stored position.
Management information consisting of a serial number table and
The generated management information is stored in the memory and recorded on the recording medium.
Playback order of tracks composed of multiple information parts
Instruct to edit the order, and edit order to play the tracks
If the editing is done, in the memory based on the editing instruction.
Track number information stored in the track number table
Only, and the track number information
As recorded in the track number table of the above management information
It was done.

In this case, the recording medium is a reproduction-only area.
Area and recordable area, the rewritten management information
Based on the information recorded in the read-only area and recordable area
The information recorded on the
It

[0007]

[0008]

According to the present invention, since the data in the management table can be rewritten, it is possible to change the music order of the music data recorded on the recording medium.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

This example is applied to a recording / reproducing apparatus for a magneto-optical disk on which audio data is recorded. The structure of this recording / reproducing apparatus is shown in FIG. In FIG. 1, reference numeral 1 denotes a magneto-optical disk, and this magneto-optical disk 1
Is mounted in the recording / reproducing apparatus while being housed in the cartridge 2, and is rotationally driven by the spindle motor 3.
Then, the optical pickup 4 reads a recording signal recorded by magnetic field modulation, which will be described later, on a track formed in a spiral shape or a concentric shape on the disk 1, and a reproduction signal is supplied to a modulation / demodulation processing circuit 6 via an RF amplifier 5. The supplied data is demodulated for the data modulated for recording. The modulation / demodulation processing circuit 6 has a recording modulation / demodulation process of, for example, 8
Digital modulation called -14 modulation (EFM) is performed. The processing in the modulation / demodulation processing circuit 6 is performed under the control of the system controller 20.

Address data is previously recorded on each track formed on the magneto-optical disk 1 by wobbling (meandering), and the address decoder 9 detects this wobbling information. That is, the reproduction signal output from the RF amplifier 5 is supplied to the address decoder 9, the address data recorded by wobbling is decoded by this decoder 9, and the decoded address data is passed through the modulation / demodulation processing circuit 6. It is supplied to the system controller 20.

Then, the audio data demodulated by the modulation / demodulation processing circuit 6 is supplied to the memory controller 10 and temporarily stored in the RAM 11 connected to the memory controller 10. The RAM 11 is a data buffer for continuously outputting the audio data even when the reproduction data is temporarily interrupted, and supplies the data stored in the RAM 11 to the compression / expansion processing circuit 12. Then, the data compressed for recording by the compression / expansion processing circuit 12 is expanded to the original data amount, and this expanded data is converted into an analog audio signal by the digital / analog converter 13, and this analog audio signal Is supplied to the audio signal output terminal 14.

Further, the movement of the optical pickup 4 and the recording head 18, which will be described later, in the radial direction of the disk is based on a command from the system controller 20.
It is performed by driving the feed motor 8 under the control of. The reproduction signal output from the RF amplifier 5 is supplied to the servo control circuit 7, and servo control is performed to follow the reproduction track. Further, rotation drive by the spindle motor 3 is also performed under the control of the servo control circuit 7.

The reproducing system circuit can also reproduce an exclusive-use optical disk in which data is recorded in pits formed during disk molding.

The recording system is configured such that an analog audio signal obtained at the audio signal input terminal 15 is converted into digital audio data by an analog / digital converter 16 and then this digital audio data is compressed / expanded. A compression process is performed at 12, and the compressed audio data is supplied to the memory controller 10 and temporarily stored in the RAM 11 connected to the memory controller 10.
Then, the voice data read from the RAM 11 is
The modulation / demodulation processing circuit 6 modulates for recording, and the modulated audio data is supplied to the head drive circuit 17 to drive the recording head (magnetic head) 18.

Here, the recording head 18 is arranged immediately above the position where the optical pickup 4 irradiates the disc 1 with laser light (on the side opposite to the disc). Then, at the time of recording, a process of recording the magnetic field generated by the recording head 18 is performed while heating the recording portion with the laser beam emitted from the optical pickup 4 to the disc 1.
This recording process is called a magnetic field modulation recording method.

An operation key 21 is connected to the system controller 20, and recording and reproduction are controlled based on the operation of the operation key 21. Further, the system controller 20 includes a display unit 30 including a liquid crystal display.
Is connected so that data relating to recording and reproduction can be displayed in characters and numbers. As the data to be displayed, data such as a track number and a reproduction time are displayed by numbers, and a disc name, a track name (song name), etc. are displayed by letters such as alphabets. In addition, the display unit 30 of the present example, as shown in FIG.
It has an area for displaying a predetermined number (25 in this case) of numbers 2, 3, 4, ...
In the case of a disc in which tracks (that is, 16 tunes) are recorded, as shown in A of FIG. 4, a number string of 1 to 16 is displayed. The number of tracks, the disc name, and the track name are determined by reproducing the index information described below from the disc.

In addition to the audio data, the magneto-optical disk 1 of this example has index information called TOC (hereinafter, TOC).
Data) is recorded on the innermost track in a predetermined format. The TOC data recorded on the innermost track is reproduced before recording or reproducing the audio data on the magneto-optical disc 1 (for example, when the disc 1 is mounted on the recording / reproducing apparatus),
It is stored in a memory (not shown) in the system controller 20. Then, the control of the recording address and the reproducing address when recording and reproducing are performed based on this TOC data. When audio data is recorded, the data such as the recorded address and track number is recorded as T
Processing to add to OC data (ie TO of corresponding area
C data update processing) is performed. In this case, one track number is given every time one unit of recording is performed, and the track numbers are increased in the order of recording. Further, only TOC data may be updated by editing work or the like. These TOC data update processes are performed by the TOC in the system controller 20.
A process for updating the data in the memory storing the data is performed, and when the magneto-optical disc 1 is taken out from the recording / reproducing apparatus, a process for writing the updated data in the memory on the innermost track is performed. Be seen.

The contents and data structure of the TOC data will be described. First, as the contents of the TOC data, the address data of the track numbers set on the disk 1 and the data recorded at the positions of the respective track numbers are described. The type data, the track name data given to each track number, and the disc name data given to the disc 1 are recorded.

The respective TOC data are shown in FIG.
As shown in (4), the data is divided into 8 bit areas and recorded. The track number described here is a number assigned by dividing the audio data recorded on the disc 1 into units. For example, when a plurality of music data is recorded on one disc, one track number is recorded. It is a number given for each and has no direct relation to the number of data recording tracks formed on the disc 1.

The address data for each track number and the data regarding the type of recording data are recorded as shown in FIG. That is, if it is assumed that N pieces of audio data from the track number 1 to the track number N (N is an arbitrary integer) are recorded on the disc 1, the area 4
The data indicating in which area the address data of track number 1 is recorded is recorded in 9, and thereafter the data indicating the recording area of the address data of the track number corresponding to the track number N is recorded one area at a time. . Here, the data indicating the recording area of the address data of each track number is referred to as point data.

From area 304, 8 areas are 1
Segments that are used as a set and are composed of each set are called parts. Each part has a start address of the part in the first 3 areas, type data in the next 1 area,
End address of the part in the next 3 areas, the last 1
Connection data is recorded in the area. In this case, the type of audio data to be recorded (discrimination between stereo and monaural, presence / absence of copy guard, emphasis on / off, etc.) is recorded as the type data, and the corresponding track number ends with that part as connection data. Information is recorded whether it is connected to other parts.

The recording / reproducing apparatus of this embodiment is adapted to control reproduction at the time of using the TOC data thus formed and recorded on the innermost track of the disc. For example, when a disc on which music data is recorded is pressed and the reproduction start key is pressed, reproduction is performed from the music recorded at the address of track number 1 indicated by the TOC data read from the disc, and the track numbers are sequentially added. Advance and play.

In this example, the track number of the music data recorded on the disc can be changed. That is, by operating a predetermined key 21 connected to the system controller 20 to instruct to change the track number, the data relating to the track number in the TOC data read in the memory in the system controller 20 is corrected. I can do it. The processing operation when changing the track number will be described below with reference to the flowchart of FIG.

First, when a predetermined key 21 is operated, an instruction to change the track number m to tune number n is given (step 1
01), the magnitude relationship between m and n is determined (step 10).
2). In step 101, the system controller 20 processes the track number m as TNOm.
The point data of NOm (that is, the data indicating the data area of the track number m) is held as the processing data A. In addition, the track number m is the process number i.

Then, when it is determined in step 102 that m and n are the same, it is not necessary to change the music number.
The process ends (step 103). When it is determined that m is smaller, the track number (TN) of the process number i (TN
Oi: That is, the value of the track number m) is incremented by 1, and the data of the track number of the original incremented value is made the data of the track number m. Then, the added track number is set as the process number i (step 104). Here, it is judged whether or not the added track number i has become the target track number n (step 105). If it is not the track number n, the process returns to step 104 to repeat the track number addition processing, and step 105 This process is repeated until the track number i added in step 1 becomes the target track number n. Then, when the track number becomes n, the point data of TNOm held as the processing data A is used as the point data of the track number n, and TO
The area corresponding to the C data is rewritten, and the process ends.

With the above processing, if the original track numbers are formed as 1, 2, 3, and 4, and the instruction to change the track number 2 to the track number 4 is given, the original track numbers are changed. The point data of 2 becomes the point data of the track number 4, and the original point data of the track numbers 3 and 4 are successively moved up to the point data of the track numbers 2 and 3.

When it is determined in step 102 that n is smaller than m, the value of the track number (TNOi: track number m) of the process number i is decremented by 1 and the original decremented value of 1 is subtracted. The data of the track number is changed to the data of the track number m. Then, the subtracted track number is set as the process number i (step 106). Here, it is judged whether or not the subtracted track number i has become the target track number n (step 107). If it is not the track number n, the process returns to step 106 to repeat the track number subtraction process, and step 106 This process is repeated until the track number i subtracted in step 1 becomes the target track number n. Then, when the track number becomes n, the point data of TNOm held as the processing data A is used as the point data of the track number n, and TO
The area corresponding to the C data is rewritten, and the process ends.

By processing in this way, for example, when the original track numbers are formed as 1, 2, 3, and 4, if an instruction to change the track number 4 to the track number 2 is given, the original track numbers are changed. The point data of 4 becomes the point data of the track number 2, and the original point data of the track numbers 2 and 3 are sequentially lowered to the point data of the track numbers 3 and 4.

These processes only change the point data of each track number in the TOC data, and the address data of each track itself (that is, parts 1 and 2 in FIG. 2).
Areas marked with 2, 3, ... Are not rewritten at all, and the processing is simply completed. Then, the rewritten TOC data is written in the TOC area of the disc when the disc is taken out, so that the TOC data in which the song number is corrected is recorded on the disc, and when the disc is reproduced thereafter. Will be played back in the order of the modified song number.

Here, the process of changing the track number of a certain music piece to another number has been described, but it is also possible to completely change the music piece number. At this time, for example, the music number may be selected while the music number is displayed on the display unit 30 by the processes shown in A, B, and C of FIG. That is, first, as shown in FIG. 4A, all the track numbers formed on the disk for correcting the song number at this time are displayed under the control of the system controller 20 (here, 1 to 1).
6) Once the song number correction mode is entered, the song number display is once erased. In this state, first, the music number desired to be the track number 1 is selected. The input operation for selecting this song number is
For example, the operation is performed by operating the ten keys of the remote control device attached to the recording / playback device. With this selection, the display unit 3
Only the selected original track number of 0 is displayed. FIG. 4B shows a state in which the original track number 3 is instructed to be the new track number 1. Then, after that, the original track numbers for making the new track numbers 2, 3, ... Are sequentially input, and the input original track numbers are sequentially displayed as shown in C of FIG. When the original track number is selected, all the song numbers are displayed as shown in A of FIG. 4, and the song number selection is completed.

At this time, the system controller 2
As the TOC data correction processing on the 0 side, the music piece number changing processing shown in the flowchart of FIG. 3 is performed every time a new track number is instructed. Therefore, for example, when changing the order of all 16 songs as described above, the song number changing process shown in the flowchart of FIG. 3 is performed 16 times.

In the above embodiment, the case of a recordable magneto-optical disk has been described, but the TOC data can be similarly corrected in the case of a disk in which a recordable area and a read-only area are mixed. it can. That is, for example, the inner circumference side of the disc is a read-only area in which data is recorded in a state that cannot be erased by pits, and the outer circumference side of the disc is a recordable area in which data can be rewritten by magnetic field modulation recording, When there is a disc provided with a TOC area for managing recorded data in both areas at a predetermined location, rewriting the data in this TOC area changes the song number across both areas. Is also good. For example, track numbers 1 to
When 10 songs of 10 are recorded and 10 songs of track numbers 11 to 20 are recorded in the recordable area, the track numbers are disordered between both areas such that the track number 11 is corrected to the track number 3. The song number may be changed as described above. This is convenient because it is possible to correct the track number of the disc in which the reproduction-only area and the recordable area are mixed to a convenient state.

Further, although the above-mentioned embodiment is applied to the recording / reproducing apparatus for the magneto-optical disk, it is also applicable to the recording / reproducing apparatus for other recording mediums in which the recording data is similarly controlled by the management table data such as TOC data. Of course, it can be applied.

[0035]

According to the present invention, since the data in the management table can be rewritten, the song order of the music data recorded on the recording medium can be easily changed, and the data can be recorded on the recording medium. It is possible to always play back the music data in good order.

In this case, by rewriting the data in the management table of the recording medium having the reproduction-only area and the rewritable area, it is possible to set the order of the songs across both areas, which is convenient. .

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a recording / reproducing apparatus to which an embodiment of the present invention is applied.

FIG. 2 is a configuration diagram showing a storage state of TOC data according to an embodiment.

FIG. 3 is a flowchart showing a music order changing process according to an embodiment.

FIG. 4 is an explanatory diagram showing a display state at the time of changing the song order according to an embodiment.

[Explanation of symbols]

1 Magneto-optical disk 20 system controller

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI G11B 27/00 G11B 27/00 D (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 27/10-27 / 34

Claims (4)

(57) [Claims] 1. A starting point of an information part recorded on a recording medium.
Address and end address and consecutive from that end address
The location where the starting address of the other information part is stored
Address table consisting of connection information indicating
Of the top information part of the track composed of information parts
Track number information indicating the position where the start address is stored
Management information consisting of a track number table with
A reproducing means for reproducing the information, and a memo for accumulating the management information reproduced by the reproducing means.
And a reproduction order of the tracks recorded on the recording medium.
Operation means for instructing the compilation, and editing instruction for the order of reproducing the tracks by the operation means
If the editing is performed, based on the editing instruction, the memory means
Each track stored in the above track number table in
A system computer that sorts only the
Each rearranged by the controller and the system controller
The track number information is the track number table of the above management information.
Editing device consisting of a recording means for recording in a file . Wherein said recording medium comprises a recording area and the reproduction only area, the information recorded on the information and the recording area recorded in the reproduction-dedicated area based on the management information that has been replaced the sequence The editing apparatus according to claim 1, wherein the editing apparatus is adapted to sequentially reproduce. 3. A starting point of an information part recorded on a recording medium.
Address and end address and consecutive from that end address
The location where the starting address of other information parts is stored
Address table that has a part consisting of
Bull and the end of the track consisting of multiple information parts
A tiger that indicates the position where the start address of the head part is stored.
Track number table with track number information
The management information is reproduced, the reproduced management information is stored in the memory, and is composed of a plurality of information parts recorded on the recording medium.
Directs editing playback order of tracks, if it is the edit instruction order to reproduce the track, the
Based on the editing instruction, the track number in the memory
Only the track number information stored in the
Instead, the rearranged track number information is added to the management information.
Editing method characterized by recording in the track number table of . Wherein said recording medium includes a recordable area and the reproduction only area, the information recorded on the information and the recording area recorded in the reproduction-dedicated area on the basis of the rewritten management information 4. The editing method according to claim 3, wherein the editing is performed sequentially.