JP2002352561A - Recorder and recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten any excessive time required for reproduction, and to improve convenience by preferentially reproducing desired data when reproducing data recorded in a prescribed compression format. SOLUTION: In this disk recording/reproducing device 10, a CD 11 is recorded in a magneto optical disk 21 in an MP3 format file, then a CPU 1a successively reads the MP3 format files recorded in the magneto optical disk 21 in the allowable range of the free space of the magneto optical disk 21, and collects the files whose track NO being additional information is 1, and automatically prepares a digest folder in the most significant hierarchy of the magneto optical disk 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a recording apparatus and a recording method.

[0002]

2. Description of the Related Art In recent years, digitalization of music has been advanced. Accompanying this, the capacity of music recording media has been increased, and magneto-optical disks having a capacity of 650 MB per sheet have appeared. On the other hand, the audio compression technology has also been improved, and according to the MP3 (MPEG-1 Audio Layer-3) system, which is a high-compression rate and high-quality compression technology or music data compressed using the technology, the compression ratio is uncompressed. Can compress digital sound data of about 1 minute of CD quality corresponding to about 10 MB to about 1/10 of 1 MB. By recording in the MP3 format, tens to hundreds of music pieces can be recorded on one magneto-optical disk.

[0003]

However, when reproducing music recorded in an MP3 format file on a magneto-optical disk, in the case of a magneto-optical disk recorded by a conventional recording device, one of the folders in the highest hierarchy is used. They were playing sequentially from the song. Therefore, it took too much time to listen to all the music recorded on one magneto-optical disk.

[0004] In particular, a single CD is used for a magneto-optical disk.
When a large number of P3 format files are recorded, for many users, even if the first song of the single CD is the main song that is preferred, if the subsequent karaoke music is not reproduced, the next main song is not reproduced. I couldn't hear.

SUMMARY OF THE INVENTION An object of the present invention is to reduce unnecessary time required for reproduction and improve convenience by reproducing desired data preferentially when reproducing data recorded in a predetermined compression format. It is to make it.

[0006]

In order to solve the above-mentioned problems, the invention according to claim 1 is a method for storing a file in which data recorded for each track on a first recording medium and a track No. In a recording device having a recording means for compressing in the form of the above and recording on the second recording medium, after recording the file by the recording means, obtain the free space of the second recording medium, and create a temporary folder A temporary folder creating means for copying a file whose track number is a predetermined NO among files recorded on the second recording medium to the temporary folder within a free space of the second recording medium. File copying means for creating a folder (digest folder) on the second recording medium by copying the temporary folder to the highest level of the second recording medium Means.

According to a second aspect of the present invention, in the first aspect of the present invention, the file copying means stores a file whose track number is 1 among files recorded on the second recording medium into a temporary folder. It is preferable to copy.

According to a third aspect of the present invention, a file in which data recorded on each track on a first recording medium and a track number are associated with each other is compressed in a predetermined format, and the compressed In a recording method for controlling recording, a step of obtaining a free space of the second recording medium after recording a file and creating a temporary folder, and a step of obtaining a track number of a file recorded in the second recording medium. Copying a file having a predetermined NO to the temporary folder within the free space of the second recording medium, and copying the temporary folder to the highest level of the second recording medium. Creating a folder (digest folder) on the second recording medium.

[0009]

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

FIG. 1 is a diagram showing the overall configuration of a disk recording / reproducing apparatus 10 according to the present embodiment. As shown in FIG. 1, the disk recording / reproducing apparatus 10 includes a system controller 1, a display unit 2, an operation unit 3, a reproducing unit 4, an MP3 encoder / decoder 5, an amplifier circuit 6, an audio output terminal 7, and a recording / reproducing unit 8. And the system controller 1
Has a CPU 1a, a ROM 1b, and a RAM 1c therein.

The CPU (Cent) in the system controller 1
ral Processing Unit) 1a is an operation unit 3 by a user.
With the key operation from, various control programs stored in the ROM 1b are read, expanded in the program storage area in the RAM 1c, and the operation of each unit is centrally controlled according to the control programs. Further, the CPU 1a executes various processes such as a digest folder creation process described later in accordance with the read program, and
It is temporarily stored in a work area formed in the AM 1c and is displayed on the display unit 2. Then, the processing result stored in the RAM 1c is stored in a predetermined storage destination such as the ROM 1b or a recording medium mounted on the recording / reproducing unit 8.

That is, when executing the digest folder creation processing, the CPU 1a stores the MP
When the recording in the three format files is completed, the free space of the magneto-optical disk is read, a temporary folder is created in the RAM 1c, and the MP3 format files recorded on the magneto-optical disk are sequentially read one by one from the top file. If the ID3TAG of the file contains information indicating track 1, the data size of the file and R
The result obtained by adding the data size copied to the temporary folder in AM1c to the free space of the magneto-optical disk is compared. If the free space is larger, the file is stored in RAM1.
Copy to a temporary folder in c. This operation is performed on all the MP3 format files recorded on the magneto-optical disk, and after completion, the temporary folder in the RAM 1c is copied to the highest hierarchy of the magneto-optical disk.

The ROM (Read Only Memory) 1b is composed of a magnetic or optical recording medium, or a nonvolatile memory such as a semiconductor. The ROM 1b stores in advance a system program corresponding to the disk recording / reproducing device 10, various processing programs such as a digest folder creation processing program executable on the system program, and data necessary for executing the program.

A RAM (Random Access Memory) 1c is
In the above various processes executed and controlled by the CPU 1a, the temporary storage area becomes a temporary storage area of a system program, a control program, input or output data, parameters, and the like, which can be executed by the disk recording / reproducing device 10 and read from the ROM 1b.

The display unit 2 is a liquid crystal display (LCD).
play), and information such as the total recording time of the disc, the number of songs in the entire disc, the number of the song currently being recorded or reproduced, and the like on the display screen in accordance with the instruction of the display signal input from the system controller 1. The operation mode and other information are displayed.

The operation unit 3 includes various function keys such as a recording key, a reproduction key, a numeric keypad, a SKIP UP / DOWN key, and a stop key, and outputs an operation signal by a key operation to the system controller 1.

The reproducing unit 4 includes an optical pickup (not shown),
It is composed of a DSP, a tracking thread servo circuit, a spindle servo circuit, a D / A converter, and the like. The control signal input from the system controller 1 searches for a target address on a disk mounted on the reproducing unit 4 and searches for the address. Play the corresponding data.

The optical pickup moves in the radial direction of the disk by a thread controlled by a tracking thread servo circuit described later at the time of reproducing the disk, and irradiates the disk with a laser beam, so that the intensity of the reflected light is reduced. Extract the data recorded on the disc.

A DSP (Digital Signal Processor)
E suppresses low-frequency components and high-frequency components of digital audio signals read from a disk by an optical pickup
Modulation processing such as FM (Eight to Fourteen Modulation) decoding is performed.

The tracking sled servo circuit moves the optical pickup in the radial direction of the disk by applying a sled drive signal to the sled motor based on various signals input from the DSP during disk reproduction.

The spindle servo circuit controls the spindle motor to a constant linear velocity by applying a spindle drive signal to a spindle motor supporting the disk from below based on various signals input from the DSP during reproduction of the disk. Then, the disk is rotationally driven.

The D / A converter converts the digital audio signal processed by the DSP into an analog audio signal when the reproducing unit 4 reproduces the disk.

The MP3 encoder / decoder 5 functions as an encoding circuit when recording on a magneto-optical disk. At the time of reproduction, it functions as a decoding circuit, and decodes music data compressed and encoded in the MP3 format. The amplification circuit 6 amplifies the music data decoded by the MP3 encoder / decoder 5 and the music data input from the reproduction unit 4 and outputs the amplified music data to the audio output terminal 7.

The audio output terminal 7 is composed of an earphone or headphones connected via a connector (not shown) or a speaker built in the main body, and reproduces and outputs the audio amplified by the amplifier circuit 6 to the outside.

The recording / reproducing unit 8 comprises an optical pickup (not shown), a DSP, a tracking thread servo circuit, a spindle servo circuit, a D / A converter, a head driving unit, and the like, and is controlled by a control signal input from the system controller 1. It searches for a target address on a disk mounted in the recording / reproducing unit 8 and reproduces and records data corresponding to the address.

The head drive unit is disposed at a position facing the optical pickup with the magneto-optical disk interposed therebetween.
3 A signal supplied from the encoder / decoder 5 to the DSP or a magnetic field corresponding to the signal supplied from the DSP is applied to the magneto-optical disk. Thus, music data is recorded on the magneto-optical disk.

Next, the operation will be described. The digest folder creation processing executed by the disk recording / reproducing device 10 will be described with reference to the flowchart of FIG.

The CPU 1a of the system controller 1
When a predetermined key of the operation unit 3 is pressed and a state change signal indicating that recording is to be started is received, a recording process is started (step S1; Y). That is, the CPU 1a stores the music data recorded on the CD 11 mounted on the reproducing unit 4 in the RAM.
1c (step S2). When reading of all music data desired to be recorded is completed (step S3;
Y), the music data read into the RAM 1c is compressed by the MP3 encoder / decoder 5 (step S4),
A magnetic field corresponding to the compressed music data is applied to the magneto-optical disk 21 mounted on the recording / reproducing unit 8 (step S).
5).

Here, the MP3 format file includes a first generation (ID3v1), a second generation (ID3v1.1), and subsequent generations (ID3v2). In each generation, a storage area for additional information called ID3TAG is provided. And the track number of the music data recorded on the recording source CD 11 is stored as additional information. The track number is a number assigned to identify each of a plurality of tracks formed on the CD 11 serving as a recording source. The track number of the innermost track of the recording medium serving as the recording source is set to 1 and the track number is set to the outer side. The number increases toward 2, 3,. The track number corresponds to the number of the music to be reproduced.

The MP3 format file of the second and subsequent generations has an information area exclusively representing the track number itself.
In the first generation, there is no information area exclusively indicating the track number, but a two-digit number indicating the track number is written at the beginning of the title as information indicating the track number (01 is written for track 1). ing.). That is, at the time of recording, additional information including the track number of the recording medium of the recording source is recorded in the MP3 format file together with the music data.

MP from CD 11 to magneto-optical disk 21
When the recording in the three formats is completed (step S6), the CPU
1a reads the free space of the magneto-optical disk 21 into the RAM 1c (step S7), and
Then, a new temporary folder is created in the RAM 1c in the folder (step S8).

After the creation of the temporary folder, the CPU 1a reads out the MP3 format files recorded on the magneto-optical disk 21 one by one in order from the highest layer (step S1).
9) It is determined whether or not the ID3TAG of the MP3 format file has information indicating the track NO1 (step S10).

As a result of the determination, if there is information indicating the track NO1 (step S10; Y), the CPU 1a sets the RAM
The data size obtained by adding the total data size of the file already copied to the temporary folder created in 1c and the data size of the MP3 format file is compared with the free space of the magneto-optical disk 21 (step S11).

As a result of the comparison, if the free space of the magneto-optical disk 21 is larger (step S11; Y), the CPU 1
a determines that the file can be copied, copies the MP3 format file to a temporary folder in the RAM 1c (step S12), and adds the data size of the MP3 format file to the total data size of the file already existing in the temporary folder. Is added to update the total copy data size of the temporary folder (step S13). The CPU 1a repeatedly executes the processes of steps S9 to S13 within the allowable range of the free space of the temporary folder until the copying process of all the MP3 format files recorded on the magneto-optical disk 21 is completed.

When all MP3 format files have been searched (step S14; Y), the CPU 1a sets the RAM 1c.
The temporary folder created in the folder is copied to the uppermost layer of the magneto-optical disk 21 to create a digest folder. If a digest folder already exists on the magneto-optical disk 21, the new digest folder is overwritten (step S15). When the creation of the digest folder is completed, a series of digest folder creation processing ends.

As described above, according to the disk recording / reproducing apparatus 10, after the CD 11 is recorded on the magneto-optical disk 21 in the MP3 format file, as long as the magneto-optical disk 21 has a free space, the track number of the additional information is not changed. Is 1, that is, MP which is the first song of the recording source CD11
A digest folder in which three types of files are collected is automatically created in the highest hierarchy of the magneto-optical disk 21. Thus, the reproduction of the magneto-optical disk 21 is performed sequentially from the music data in the folder created in the highest hierarchy. As a result, for example, when reproducing a magneto-optical disk in which a single CD is recorded in a large number of MP3 format files, the main tune having a higher preference for many users is preferentially reproduced, and extra time required for reproduction is obtained. And music can be enjoyed efficiently.

The description in each of the above embodiments is a preferred example of the disk recording / reproducing apparatus 10 according to the present invention, and the present invention is not limited to this. For example, the recording medium serving as a recording source is not particularly limited to a CD as long as it can be read, and may be a DVD or the like. The data compression format is not limited to MP3, and the compressed file is recorded on the track N of the recording medium that is the recording source.
What is necessary is just to have the information of O.

In each of the above-described embodiments, the digest folder creation processing is performed from the recording in the MP3 format on the magneto-optical disk 21. However, the recording / reproducing unit 8 records the magneto-optical disk already recorded in the MP3 format file. And a digest folder can be created by sequentially performing the processing from step S7 on the magneto-optical disk. Further, since the first song of the recording source CD may not always be the main song like an album CD, the user may designate whether or not to create a digest folder when recording. In addition, the detailed configuration and detailed operation of the present device can be appropriately changed without departing from the spirit of the present invention.

[0039]

According to the effects of the present invention, when reproducing data recorded on a recording medium in a predetermined compression format, desired data is preferentially reproduced, thereby shortening the time required for reproduction. Efficiency and convenience can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram conceptually showing the overall configuration of a disk recording / reproducing apparatus 10 according to the present invention.

FIG. 2 is a flowchart illustrating an operation of a digest folder creation process executed by a CPU 1a of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 System controller 1a CPU 1b ROM 1c RAM 2 Display part 3 Operation part 4 Reproduction part 5 MP3 encoder / decoder 6 Amplification circuit 7 Audio output terminal 8 Recording / reproduction part 10 Disk recording / reproduction device 11 CD 21 magneto-optical disk

Claims (3)

[Claims] 1. A recording means for compressing data recorded on a first recording medium for each track and a file associated with a track number in a predetermined format and recording the compressed file on a second recording medium. In the recording apparatus provided, after the file recording by the recording means, the free space of the second recording medium is obtained, and a temporary folder creating means for creating a temporary folder, and the temporary folder creating means is recorded on the second recording medium File copying means for copying a file whose track number is a predetermined number among the files to the temporary folder within the free space of the second recording medium; And a folder creating means for creating a folder on the second recording medium by copying to a higher layer. 2. The recording apparatus according to claim 1, wherein said file copying means copies a file whose track number is 1 among files recorded on said second recording medium to a temporary folder. . 3. A recording system for performing a control for compressing a file associated with a track No. with data recorded on each track on a first recording medium in a predetermined format and recording it on a second recording medium. Obtaining a free space of the second recording medium after recording the file, and creating a temporary folder; and wherein a track number among files recorded on the second recording medium is a predetermined number. Copying the file to the temporary folder within the free space of the second recording medium; and copying the temporary folder to the highest level of the second recording medium and saving the folder on the second recording medium. Creating a recording method.