JP2002216421A - Sound recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound recording and reproducing device which easily manages a musical piece and excellently reduces the noise due to a seeking operation. SOLUTION: This sound recording and reproducing device records and reproduces a digital data of musical piece on a hard disk by means of a hard disk drive 5, and is provided with a CPU 1 which controls a hard disk drive 5 on the recording, when there is an unrecorded area on a recording track in the hard disk, successively performs the recording from the starting edge side of recording track of the unrecorded area toward the terminal edge side and, when there is no more unrecorded area, circulatively performs such an action as to successively perform the recording by superscription from the starting edge of the recording track to the terminal edge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a recording / reproducing apparatus for recording / reproducing digital music data on a disk-shaped recording medium by a recording / reproducing section.

[0002]

2. Description of the Related Art A general recording / reproducing apparatus such as a cassette deck, an MD deck, or a CD deck can record a maximum of about ten or more songs on one medium, and cannot record for a long time. .

[0003] On the other hand, it has been proposed to use a hard disk as a recording medium for storing music data. In this case, although the number of music can be stored as many as several thousands, for example, it is intended only to store music data. "Song name" and "Artist name" to manage it
And the like, and the input interface and the search system at the time of reproduction may become complicated.

Further, since the FAT format used in personal computers and the like is adopted as a data storage method, when data is deleted, sector fragmentation occurs, and new data is added to compensate for this. , Seek operations occur frequently during music playback,
Noise is generated.

[0005]

As described above, in the above-described conventional recording / reproducing apparatus, if a single recording medium can record for a long time, the management of music is complicated and noise is generated due to seek operation. There was a problem that would occur.

The present invention was conceived under such circumstances, and it is an object of the present invention to provide a recording / reproducing apparatus capable of easily managing music and reducing noise due to seek operation. It is an issue.

[0007]

DISCLOSURE OF THE INVENTION In order to solve the above-mentioned problems, the present invention takes the following technical means.

According to a first aspect of the present invention, there is provided a recording and reproducing apparatus for recording and reproducing digital music data on a disk-shaped recording medium by a recording and reproducing unit. When there is an unrecorded area in the recording track of the medium, the recording is sequentially performed from the recording track start end side to the end side of the unrecorded area. A recording / reproducing apparatus is provided which includes a recording / reproducing control unit for cyclically performing an operation of sequentially overwriting and recording up to the above.

According to another preferred embodiment, the recording track on the recording medium is divided into a large number of sectors from the starting end to the end, and the recording / reproducing control unit controls the recording / reproducing unit to thereby determine the starting end. A predetermined number of continuous sectors including a sector or a starting sector are used as a management area, and management information necessary for recording and / or reproducing music data over the entire recording medium is recorded in the management area;
Of the sectors other than the management area, the leading sector of each song or a continuous predetermined number of sectors including the leading sector is set as a header region, and recording and / or recording of the song in the header region.
Alternatively, header information necessary for reproduction is recorded.

According to another preferred embodiment, the recording / reproducing control unit controls the recording / reproducing unit to determine whether the sector is a header area sector at the head of all sectors except the management area. Sector attribute information indicating whether the music data is recorded in the sector is recorded.

According to another preferred embodiment, the recording / reproducing control unit controls the recording / reproducing unit at the time of recording, so that the latest recording position information for judging the sector number of the most recently recorded music piece is recorded. Record in the management area, and at the time of playback,
By controlling the recording / reproducing section, the music pieces whose recording timing is new are reproduced in order.

According to another preferred embodiment, the recording / reproducing control section controls the recording / reproducing section based on an instruction operation by the user to reproduce the music in the header area of the music designated by the user. At this time, reproduction inhibition information indicating that the music is not reproduced is recorded, and at the time of reproduction, the recording / reproduction unit is controlled so that the music whose reproduction inhibition information is recorded in the header area is not reproduced.

According to another preferred embodiment, the recording / reproduction control unit controls the recording / reproduction unit at the time of reproduction based on an instruction operation by the user, thereby interrupting the reproduction of the music currently being reproduced. To start playback of the next song.

According to another preferred embodiment, the recording / reproduction control unit randomly determines the reproduction order of the music pieces during reproduction based on an instruction operation by the user.

According to the present invention, the recording / reproducing control section controls the recording / reproducing section at the time of recording, and when an unrecorded area exists on a recording track of the recording medium, the recording track starts from the recording track start end side of the unrecorded area. Recording is performed sequentially toward the end, and when there is no unrecorded area, the operation of sequentially overwriting recording from the beginning to the end of the recording track is performed cyclically, so that sector fragmentation does not occur. ,
Music management is easy and noise due to seek operation can be reduced favorably.

Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a circuit block diagram of an audio system employing a recording / reproducing apparatus according to the present invention. This audio system includes a CPU 1, a ROM 2, a RAM
3, interface circuit 4, hard disk drive 5, operation unit 6, display unit 7, signal processing unit 8, D / A conversion unit 9, amplification unit 10, speaker system 11, MD recording / reproduction unit 12, CD reproduction unit 13, A magnetic tape recording / reproducing unit 14 is provided.

CPU (central processing unit) 1
Controls the entire audio system.

A ROM (read only memory) 2 has a CPU
1 is stored.

A RAM (random access memory) 3 is a C
A work area is provided to PU1, and various data are stored.

The interface circuit 4 controls communication between the CPU 1 and various peripheral circuits such as the hard disk drive 5.

The hard disk drive 5 is controlled by the CPU 1 to write data such as music data to a built-in hard disk and read music data and the like from the hard disk.

The operation unit 6 includes a plurality of key switches operated by a user and supplies operation signals to the CPU 1 according to the operation of the user.

The display unit 7 is controlled by the CPU 1,
The operation guide and the operation status of the apparatus are displayed on the display screen.

The signal processing unit 8 performs processing such as decompression of music data.
Performs digital signal processing.

The D / A converter 9 converts the music data expanded by the signal processor 8 into an analog music signal.

The amplifier 10 is controlled by the CPU 1 to amplify the music signal from the D / A converter 9.

The speaker system 11 includes a plurality of speakers, and converts a music signal from the amplifier 10 into an audible sound.

The MD recording / reproducing section 12 is controlled by the CPU 1 to read music data from an MD (mini disc) and write music data to the MD.

The CD reproducing section 13 is controlled by the CPU 1 to read music data from a CD (compact disc).

The magnetic tape recording / reproducing unit 14 is controlled by the CPU 1 to read music data from the magnetic tape and write music data to the magnetic tape.

FIG. 2 is a conceptual illustration of recording tracks on a hard disk. The recording track of the hard disk is divided into a number of sectors from the start end to the end, and numbers are assigned in order from the start end sector, such as 0, 1, 2,.

The sector 0 is always used as a management area, and no music data is written. The management area stores management information necessary for recording and reproducing music data over the entire hard disk. As the management information, for example, a sector number to start recording next,
There is a sector number of the header area corresponding to the music that has been reproduced last time, and the like.

Sector 1 and subsequent sectors are assigned to each song, and the number of sectors used by each song varies according to the amount of song data. The first sector of each song is used as a header area.

Header information is recorded in the header area.
As the header information, for example, the sector number of the header area, the header number, the deletion mark, the sector number of the header area of the previous music piece, the sector number of the header area of the next music piece,
The size of the music data of the music, the storage data format, and the like exist. The deletion mark is reproduction inhibition information for indicating an instruction not to reproduce the music at the time of reproduction.

For each song, song data is stored from the sector next to the header area. Since the size of the music data is stored in the header area, the last sector of the music can be grasped from the size.

For each song, a few bytes (for example, about 2 bytes) at the beginning of all the sectors except the management area are used as sector attribute areas as in the header area. In this sector attribute area, sector attribute information indicating whether this sector is a data sector or a header sector is stored. This sector attribute information is used to determine the possibility that the sector which was previously the header area will be changed to the music data area while overwriting and recording.

Next, the operation will be described.

For example, when a user wants to record music recorded on an MD on a hard disk, the user operates the operation unit 6 to select an MD as a playback target, select a hard disk as a recording target, and start recording. Let it.

Thus, the CPU 1 controls the MD recording / reproducing unit 12 to reproduce the MD. MD recording and playback unit 1
2 is stored in the hard disk by the hard disk drive 5. At this time, CPU1
Controls the hard disk drive 5. The RAM 3 is used as a buffer memory.

When an unrecorded area exists on the hard disk, recording is started from the head of the unrecorded area. For example, if no music has been recorded on the hard disk, header information is recorded in sector 2 and music data is recorded from sector 3.

If there is no unrecorded area on the hard disk, the oldest music is deleted and a new music is recorded. Specifically, the header information and the music data relating to the new music are overwritten and recorded. For example, if the previous song used up to the last sector of the hard disk,
The header information of the new music is overwritten on the sector 1 and the music data of the new music is overwritten on the sectors 2 and thereafter. Of course, depending on the size of the song data of the new song, the middle sector of the original song may be overwritten, and not only the original song but also the next song or the last sector May be overwritten.

When a new music piece is recorded, track numbers are assigned sequentially from the newest music piece and recorded in the management area. Here, the track number is a music number of a music piece.

That is, in the recording operation, the sectors 1 to the last sector are sequentially and cyclically used, and this order is not changed. Therefore, the user does not need to be aware of the capacity of the hard disk, and after the hard disk has no unrecorded area, the oldest music is replaced with the newest music. The sector from which to start recording a new song is determined by the CPU.
1 is determined with reference to the management information of the management area.

The above-described recording operation has been described for the case where the music data from the MD recording / reproducing unit 12 is recorded.
The same applies to the case of recording music data from the D reproducing unit 13 and the magnetic tape recording and reproducing unit 14.

When the user operates the operation unit 6 to select a hard disk and instructs reproduction, the CPU 1 controls the hard disk drive 5 to sequentially reproduce music from the most recently recorded music. At this time, CPU1
Refers to the management information in the management area to determine the storage location of the most recently recorded music. Further, in the header area of each music, as the header information, the sector numbers of the header areas of the music immediately before and after the music are stored, so that the CPU 1 stores the header information in the header area. By referring to it, it is possible to determine the reproduction start position of the music before and after.

The music data read from the hard disk drive 5 is expanded by the signal processing unit 8 and
The signal is converted into an analog music signal by the A conversion unit 9, amplified by the amplification unit 10, and output from the speaker system 11. The amplifying unit 10 has a built-in sound quality adjustment circuit, and the CPU 1 controls the amplifying unit 10 to adjust the sound quality according to the setting of the user.

During playback, the user operates the operation unit 6 to
When the skip is instructed, the CPU 1 controls the hard disk drive 5 to stop the reproduction of the current music and start the reproduction of the next music.

When the user operates the operation unit 6 to instruct random reproduction, the CPU 1 randomly determines a music reproduction order and causes the hard disk drive 5 to reproduce music in that order.

During playback, the user operates the operation unit 6 to
When the deletion is instructed, the CPU 1 records a deletion mark in the header area of the music being reproduced. As a result, the music is not reproduced at the next and subsequent reproductions, and for the user, the same result as when the music is deleted from the hard disk is obtained. However, the data is not actually erased and remains recorded on the hard disk until overwriting is performed at the time of recording.

As described above, the CPU 1 controls the hard disk drive 5 so that, at the time of recording, if an unrecorded area exists in a recorded track on the hard disk, the unrecorded area is sequentially recorded from the recording track start end to the end. When the recording is performed and the unrecorded area no longer exists, the operation of sequentially overwriting from the beginning to the end of the recording track is performed cyclically, so that the fragmentation of the sector does not occur. , Noise can be satisfactorily reduced.

The user does not need to be basically conscious of deleting music. In other words, when a hard disk is used, the amount of music to be recorded becomes enormous, and when the remaining capacity of the hard disk is exhausted, the user specifies the music and deletes the music in order to record a new music. In the case of performing the configuration, the user needs to perform the operation from the specific operation of the music to be deleted, and the operation is very troublesome, and the program for the operation is also complicated. However, if the music recorded first is automatically overwritten and deleted as in this embodiment, the user does not need to perform any operation, and the usability is greatly improved.

In addition, an erasure mark is written in the header area as reproduction prohibition information based on the user's instruction, and the music is not reproduced thereafter. The same effect as the deletion of music can be provided.

Further, since a hard disk is used as a recording medium, long-time continuous reproduction can be performed without changing the recording medium. This is very effective, for example, when used as BGM.

Further, there is no need to manage song titles and artist names. In other words, the device is positioned as a temporary storage device for music, and instead of adopting a complicated data management method, the music is simply played back sequentially from the latest recorded music. Eliminates the need for an input interface for the user to instruct selection. Thereby, the user can easily perform the operation, and the usability is improved. In addition, since it has the same functions as a conventional CD player, such as random playback and skipping for each song,
The user does not feel inconvenience.

Also, since the device is only a temporary storage device for music, the user is supposed to store the master data on another medium or the like.
Even if a hard disk crash occurs, the effect on the user is considered to be limited.

In the above embodiment, a hard disk is used as a disk-shaped recording medium. However, the present invention is not limited to a hard disk, and another recording medium such as a recordable / reproducible DVD may be used. However, a recording medium having a large capacity is preferable.

In the above embodiment, the management area and the header area of each music piece are each one sector, but two or more sectors may be used.

In the above-described embodiment, the case where digital music data is supplied from the MD recording / reproducing unit 12, the CD reproducing unit 13, and the magnetic tape recording / reproducing unit 14 has been described. In this case, an A / D converter for converting the music signal into digital data and a compressor for compressing the digital data converted by the A / D converter in a predetermined format are provided. The music data may be stored on the hard disk.

Further, in the above-described embodiment, during normal playback, the music that has been recorded most recently is played back sequentially, but the music that has been recorded first may be played back sequentially.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of an audio system employing a recording / playback apparatus according to the present invention.

FIG. 2 is a conceptual explanatory diagram of a recording track in a hard disk.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 2 ROM 3 RAM 4 Interface circuit 5 Hard disk drive 6 Operation part 7 Display part 8 Signal processing part 9 D / A conversion part 10 Amplification part 11 Speaker system 12 MD recording / reproduction part 13 CD reproduction part 14 Magnetic tape recording / reproduction part

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5B082 BA02 CA03 EA01 JA12 5D044 AB06 BC01 BC08 CC05 DE28 DE49 EF05 FG16 FG18 GK12 GK14 HH15 HL02 HL07

Claims (7)

[Claims] 1. A recording / reproducing apparatus for recording / reproducing digital music data on / from a disk-shaped recording medium by a recording / reproducing section, wherein the recording / reproducing section is controlled at the time of recording to record unrecorded data on a recording track on the recording medium. When an area exists, recording is sequentially performed from the recording track start end to the end side of the unrecorded area, and when the unrecorded area no longer exists, the overwriting recording is sequentially performed from the start end to the end of the recording track. Recording / reproducing apparatus provided with a recording / reproducing control section for performing the recording in a cyclic manner. 2. A recording track on the recording medium,
The recording / reproducing control unit controls the recording / reproducing unit, and the recording / reproducing control unit controls the recording / reproducing unit so that a predetermined number of continuous sectors including the starting-end sector or the starting-end sector are used as a management area. In the management area, management information necessary for recording and / or reproducing music data over the entire recording medium is recorded, and among sectors other than the management area, a leading sector of each music piece or a continuous sector including a leading sector is included. 2. The recording / reproducing apparatus according to claim 1, wherein a predetermined number of sectors are used as a header area, and header information necessary for recording and / or reproducing the music is recorded in the header area. 3. The recording / reproducing control unit controls the recording / reproducing unit to record music data at the head of all sectors other than the management area, whether the sector is a header area sector or not. 3. The recording / reproducing apparatus according to claim 2, wherein sector attribute information indicating whether the sector is a recorded sector is recorded. 4. The recording / reproducing control unit controls the recording / reproducing unit during recording to record the latest recording position information for judging the sector number of the most recently recorded music in the management area. 4. The recording / reproducing apparatus according to claim 2, wherein at the time of reproduction, the recording / reproducing unit is controlled to reproduce the music pieces in the order of recording time, starting from the newest. 5. The recording / reproduction control unit controls the recording / reproduction unit based on an instruction operation by a user, so that the music is not reproduced in a header area of the music specified by the user during reproduction. 5. The apparatus according to claim 2, wherein the control unit controls the recording / reproducing unit to reproduce the music in which the reproduction prohibition information is recorded in the header area during reproduction. Recording and playback device. 6. The recording / reproducing control unit controls the recording / reproducing unit at the time of reproduction based on a user's instruction operation, thereby interrupting the reproduction of the music currently being reproduced, and The reproduction is started.
6. The recording / reproducing apparatus according to any one of claims 5 to 5. 7. The recording / reproducing apparatus according to claim 1, wherein the recording / reproducing control section randomly determines a reproduction order of the music pieces during reproduction based on an instruction operation by a user.