JP2000113591A - Recording/reproducing device and recording/reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording/reproducing device, which is capable of recording additional information without hindering information data from being recorded and a recording/reproducing method. SOLUTION: This recording/reproducing device which records or reproduces the information data into an optical disk 20, in which the information data are recordably formatted, by an optical pick up 17 and a magnetic head is provided with a RAM 11, which is capable of storing the information data and its additional information into respectively independent storing regions, a memory control circuit 10, which stores additional information into the RAM 11 even during the recording of the information data into the optical disk 20, and records the additional information into the optical disk 20 during the non- recording of the information data into the optical disk 20, and a microcomputer 13. Consequently, the additional information is recorded into the optical disk 20 without hindering the information data from being recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention can be applied to, for example, a recording / reproducing apparatus and a recording / reproducing method for recording additional information for audio data to be recorded on an optical disk.

[0002]

2. Description of the Related Art Conventionally, as a technique for recording additional information on a recording medium, for example, Japanese Patent Laid-Open Publication No. Hei 5-110975 instructs a recording apparatus for recording a still image signal on a recording medium and a writing of a still image signal. Register identification data for attribute declaration in the controller, record data indicating whether or not recording is possible in correspondence with the identification data on the recording medium, enable data to be changed only when the attributes match, and write the data when the attributes do not match. A still image file system has been disclosed in which prohibition increases the degree of freedom in write protection processing between a host and a disk.

[0003]

However, in the above-described technology for recording additional information on a recording medium, it has been required to record additional information while recording information data. In the still image file system described in JP-A-110975, it is necessary to register identification data as additional information in advance, and recording of the additional information while recording the information data hinders the recording of the information data. was there.

The present invention has been made in view of the above points, and is intended to propose a recording / reproducing apparatus and a recording / reproducing method capable of recording additional information without hindering recording of information data. .

[0005]

According to another aspect of the present invention, there is provided a recording / reproducing apparatus for recording or reproducing information data on or from a recording medium on which information data is recordable. A storage unit capable of storing the information data and the additional information in independent storage areas; and storing the additional information in the storage unit even while the information data is being recorded on the recording medium by the recording / reproducing unit. Control means for storing and recording the additional information on the recording medium by the recording / reproducing means while the information data is not recorded on the recording medium.

Further, the recording / reproducing method of the present invention is a recording / reproducing method for recording or reproducing information data by a recording / reproducing means on a recording medium on which information data is recordable. Enabling storage in independent storage areas of storage means, and during the intermittent recording of the information data on the recording medium by the recording / reproducing means, storing the additional information in the storage means;
While the information data is not being recorded on the recording medium, the additional information is controlled to be recorded on the recording medium by the recording / reproducing means.

According to the recording / reproducing apparatus and the recording / reproducing method of the present invention, the following operations are performed. First, when a recording operation is started, management information is read from a recording medium. The read management information is stored in the storage area of the storage unit. Then, the writing of the information data into the first area of the storage means is started. At this time, writing of the additional information is prohibited.

Next, it is determined whether or not the information data in the first area of the storage means is equal to or larger than a recording unit. When the information data in the first area of the storage means is equal to or larger than the recording unit, the free recording area of the recording data area of the recording medium is accessed. At this time, the information data recorded from the first area of the storage means to the recording medium is controlled to be recorded at the address of the data area based on the free area of the management information. Then, the information data of the recording unit is recorded on the recording medium.

If the information data in the first area of the storage means is not larger than the recording unit, it is determined whether the additional information in the second area of the storage means is larger than a predetermined amount. When the additional information in the second area of the storage means is equal to or more than a predetermined amount,
Access the free area of the recording data area of the recording medium.
At this time, the additional information recorded on the recording medium from the second area of the storage means is controlled to be recorded at the address of the data area based on the free area of the management information. Then, a predetermined amount of data is recorded on the recording medium.

Next, writing of the additional information to the storage means is permitted. If the additional information in the second area of the storage means is not equal to or more than the predetermined amount, it is determined whether or not the writing of the additional information to the storage means is OK. If writing is OK,
The additional information is written in the second area of the storage means. Here, writing of the additional information to the storage unit is prohibited.

Then, it is determined whether or not the recording operation is an end. When the recording operation is completed, the management information is written on the recording medium.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a magneto-optical recording / reproducing apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The optical disk applied to the magneto-optical recording / reproducing apparatus according to the embodiment of the present invention is constituted by, for example, an MD (mini-disc). The sector has a hierarchical structure, and addresses are assigned in binary numbers. In addition to the sector header of the main channel, this address is the sub-code Q in the reproduction-only MD software, and A in the recording MD.
DIP (Address In Pregroove)
Is also recorded.

ADIP is a recording MD by making a track (pregroove) approximately 30 nm wobble (meandering) at a frequency of 22.05 kHz modulated with address information over the entire surface of a disk by a stamper at the time of manufacturing the disk. , CLV servo of the spindle motor 21 described later, and high-speed random access.

[0014] In addition to the audio data, Clip image data as compressed still image data is recorded on the MD as additional information related to the audio data.

[0015] Hereinafter, audio data and Clip data are recorded on an optical disc formatted in the MD-Clip format in which such Clip image data can be recorded.
A magneto-optical recording and reproducing apparatus according to an embodiment of the present invention for recording or reproducing p image data will be described.

FIG. 1 is a block diagram showing a configuration of a magneto-optical recording / reproducing apparatus according to an embodiment of the present invention. In FIG. 1, in a magneto-optical recording / reproducing apparatus 1, an audio input signal supplied to a terminal 3 is supplied to a buffer amplifier 6 as a recording system of audio data, and the buffer amplifier 6 amplifies the audio input signal to a signal processable level at a subsequent stage. . The audio input signal amplified by the buffer amplifier 6 is supplied to an A / D conversion circuit 8 and is converted into digital data.
This audio digital data is ATRAC (Ada
Ptive Transform Acoustic
(Coding) encoding circuit 9 for high-efficiency encoding. The ATRAC encoding circuit 9 compresses the data to 292 kbit / s, which is about 1/5 of the coding of the CD, and enables recording and reproduction of 74 minutes of audio data. Specifically, in the ATRAC encoding circuit 9, the audio data is divided into three bands of a low band, a middle band, and a high band by a band division filter, and the MDCT
(Modified Discrete Cosine
Transform) converts the time axis signal of each band into a frequency spectrum.

The compressed ATRAC audio data is stored in a designated area of the RAM 11 under the write control of the memory control circuit 10.

On the other hand, as additional information, JPEG (Joint Photograph) is used as an example of compressed still image information.
ic Image Coding Experts G
Considering the recording system of the (loop) image, the image input data supplied to the terminal 4 is supplied to the JPEG encoding circuit 22 and converted into compressed still image data. More specifically, the JPEG encoding circuit 22 performs DCT coding on the block-formed image input data by DCT, further quantizes it by a quantizer, and finally codes it by an encoder.

The compressed JPEG still image data is written into the RA by the write control of the memory control circuit 10.
It is stored in the designated area of M11. During playback, the compressed JPEG still image data is expanded by the JPEG decoding circuit 22 by an input operation of the key 24 and displayed on the display unit. At the time of reproduction, the compressed ATRAC audio data is expanded by an ATRAC decoding circuit 9 and output as an audio output signal from a terminal 2 via a D / A conversion circuit 7 and a buffer amplifier 5.

FIG. 2 shows the allocation of a memory area in a RAM (memory) for the MD-Clip format of the present embodiment. As shown in FIG. 2, from a storage area address of 0 to a maximum (max) area, a U-TOC (User Table Of) indicating management information of information data is provided.
(Contents) data area 28, AUX U-TOC data area 2 indicating management information of additional information
7, an area 1 (for the above-mentioned ATRAC data) 26, and an area 2 (for the above-mentioned JPEG data) 25 are sequentially stored.

When the data amount of the ATRAC audio data in the area 1 becomes equal to or more than one cluster, the data is read from the RAM 11 under the read control of the memory control circuit 10 and is read out from the MD format encoding circuit 12.
Supplied to MD format encoding circuit 12
Generates ATRAC data in a data format with 36 sectors as one cluster. MD format A
TRAC data is ACIRC (Advanced Cr)
oss Interleave Reed-Solom
(on Code) is supplied to the encoding circuit 14 and subjected to error correction coding. The ACIRC encoding circuit 14
This is a method in which deinterleaving is added only to data, data on the disk is arranged in real-time order, and only parity for error correction is interleaved.

The error-corrected ATRAC data is supplied to a driver 18 where the error-corrected ATRAC data is sent.
A drive signal is generated by the driver 18 from the RAC data and supplied to the magnetic head 19. Magnetic field modulation is applied by the magnetic head 19 to the optical disk 20 whose Curie temperature has been exceeded by the irradiation of the recording power laser beam from the optical pickup 17. Thus, the external magnetic field can be recorded on the optical disk 20 in accordance with the data directly.

At this time, area 2 (25) of RAM 11
The operation of writing the JPEG data to the optical disk 20 is prohibited when there is JPEG data not written to the optical disk 20 in the area 2.

For example, in a predetermined amount unit such as a block unit,
After writing the JPEG data in the area 2 of the RAM 11 and recording the JPEG data on the optical disc 20, the writing of the next JPEG data to the area 2 of the RAM 11 is permitted. At this time, if the predetermined amount is less than one cluster, 0 data is added.

The recording of the JPEG data from the area 2 of the RAM 11 onto the optical disk 20 is performed according to the ATRA of the area 1.
This is performed while C data is not being recorded.

ATRAC data to be recorded on the optical disc 20 from the area 1 of the RAM 11 is recorded at an address of a data area based on Free Area indicating a free area of the U-TOC sector 0, and JPEG recorded on the optical disc 20 from the area 2. Data is AUX UT
Blank Area indicating a free area in OC sector 0
Is recorded in the address of the data area based on.

The operation of the magneto-optical recording / reproducing apparatus of this embodiment having the above-described configuration will be described below. FIG. 3 is a flowchart showing the recording operation of the present embodiment. In addition,
The following processing and determination are performed by the microcomputer 13 shown in FIG. In FIG. 3, it is determined whether or not to start a recording operation in step S1. Specifically, this is performed by the microcomputer (microcontroller) 13 recognizing a recording operation instruction from the key 24 shown in FIG. When the recording operation is started, U is determined in step S2.
-TOC, AUX Reads U-TOC. More specifically, the U-TOC and AUX U-TOC recorded in the U-TOC area of the optical disc 20 are irradiated with a read power laser beam from the optical pickup 17 so that the RF amplifier 16 and the ACIRC decoding circuit 1
4. Reproduction is performed via the MD format decoding circuit 12. Then, the U-TOC data area 28 and the AUX U-TOC data area 27 of the RAM 11 shown in FIG.
The U-TOC and the AUXU-TOC are written by the memory control circuit 10 into the memory.

At step S3, writing of audio data to area 1 is started. Specifically, the terminal 3, the A / D conversion circuit 8, and the ATRAC encoding circuit 9 shown in FIG.
The ATRAC data is written by the memory control circuit 10 into the ATRAC data area 1 (26) of the RAM 11 shown in FIG.

In step S4, writing of JPEG data is prohibited. Specifically, the JP of the RAM 11 shown in FIG.
The writing of JPEG data into the EG data area 2 (25) is prohibited by the memory control circuit 10.

Next, at step S5, the ATRA of area 1 is
It is determined whether the C data is one cluster or more. If the ATRAC data of area 1 is equal to or more than one cluster in step S5, the process proceeds to step S6 to access the free area. Specifically, when one or more clusters of ATRAC data in the area 1 of the RAM 11 are stored, the tracking and focus of the free area of the data area of the optical disc 20 are controlled by the optical pickup 17 via the servo circuit 15. . At this time, R
A recorded on the optical disc 20 from the area 1 of the AM 11
The TRAC data is controlled by the servo circuit 15 so as to be recorded at an address of a data area based on the Free Area indicating a free area of the U-TOC sector 0.

In step S7, data of one cluster from area 1 is recorded on the optical disk. Specifically, RAM1
ATRAC of one cluster stored in one area 1
The data is read by the memory control circuit 10, and the MD format encoding circuit 12, ACIRC
The data is recorded on the optical disk via the encoding circuit 14, the driver circuit 18, and the magnetic head 19. Then, returning to step S5, the determination and processing of steps S5 to S7 are repeated.

In step S5, the ATRA of area 1 is
If the C data is not one cluster or more, step S8
Then, it is determined whether or not the JPEG data in the area 2 is equal to or larger than a predetermined amount. If the amount of JPEG data in area 2 is equal to or greater than the predetermined amount in step S8, the flow advances to step S9 to access a blank area. Specifically, when a predetermined amount or more of JPEG data in the area 2 of the RAM 11 is stored, the tracking and focus of the blank area of the data area of the optical disc 20 are controlled by the optical pickup 17 via the servo circuit 15. . At this time, the JPEG data recorded on the optical disc 20 from the area 2 of the RAM 11 is stored in the servo circuit 15 so that the JPEG data is recorded at the address of the data area based on the Blank Area indicating the free area of the AUX U-TOC sector 0.
Is controlled by

In step S10, a predetermined amount of J
PEG data is recorded on an optical disc. Specifically, R
A predetermined amount of JPEG stored in area 2 of AM11
The data is read by the memory control circuit 10, and the MD format encoding circuit 12, ACIRC
The data is recorded on the optical disk via the encoding circuit 14, the driver circuit 18, and the magnetic head 19.

In step S11, writing of JPEG data is permitted. Specifically, J of the RAM 11 shown in FIG.
The writing of JPEG data to the PEG data area 2 (25) is permitted by the memory control circuit 10. Then, returning to step S5, steps S5-S
The determination and processing up to 11 are repeated.

In step S8, the JPEG of area 2
If the data is not equal to or more than the predetermined amount, the process proceeds to step S12, and it is determined whether the writing of the JPEG data is OK.
If JPEG data writing is OK in step S12, JPEG data is written in area 2 in step S13. Specifically, the terminal 2 and the JPEG data area 22 shown in FIG.
(25) JPEG data to memory control circuit 1
Write with 0.

In step S14, writing of JPEG data is prohibited. Specifically, J of the RAM 11 shown in FIG.
The writing of JPEG data to the PEG data area 2 (25) is prohibited by the memory control circuit 10.

Then, in a step S15, it is determined whether or not the recording operation is ended. Specifically, next, the microcomputer determines whether or not there is data to be recorded.

If the recording operation has been completed in step S15, the process proceeds to step S16, where the U-TOC, AUX U-
Write TOC. Specifically, the optical disk 20
New U-TOC, AUX U-
While irradiating the TOC with a laser beam of write power from the optical pickup 17, the U-TO
C data area 28, AUX New U-TOC, AUX stored in U-TOC data area 27
The U-TOC is read by the memory control circuit 10, and the MD format encoding circuit 12, ACIR
The data is recorded on the optical disk via the C encoding circuit 14, the driver circuit 18, and the magnetic head 19. In the above processing, the U-TOC data area 28 of the RAM 11 and the AUX U-TOC data area 27
, New U-TOC and AUX U-TOC are updated by the memory control circuit 10 and stored.

If the recording operation has not been completed in step S15, the process returns to step S5, and steps S5 to S15
The processing and determination up to are repeated.

The recording / reproducing apparatus according to the present embodiment is a recording / reproducing apparatus for recording / reproducing information data on / from an optical disk 20 as a recording medium on which information data is recordable by using an optical pickup 17 and a magnetic head 19 as recording / reproducing means. In the reproducing apparatus, the RAM 11 as a storage unit capable of storing the information data and the additional information in independent storage areas, and the recording and reproducing unit stores the information data during recording of the information data on the recording medium. A memory control circuit 10 and a microcomputer 13 as control means for storing information in the storage means, and recording the additional information on the recording medium by the recording / reproducing means while the information data is not recorded on the recording medium; The additional information is recorded on the recording medium without interrupting the recording of the information data. It is possible to record.

In the recording / reproducing apparatus according to the present embodiment, the information data is compressed audio data and the additional information is compressed still picture information. The compressed still image information can be separately recorded in each area of the recording medium by a predetermined amount.

Further, in the recording / reproducing apparatus of this embodiment, when the additional information not recorded on the recording medium is stored in the storage means, the other additional information is stored in the storage means. Since the storage is prohibited, the process of writing or reading the additional information to the storage means can be simplified, and the information data and the additional information can be separately recorded on the recording medium.

The recording / reproducing method according to this embodiment is a recording / reproducing method for recording or reproducing information data on a recording medium on which information data is recordable by a recording / reproducing means. And can be stored in independent storage areas of the storage means,
During the intermittent recording of the information data on the recording medium by the recording / reproducing means, the additional information is stored in the storage means, and the additional information is recorded while the information data is not recorded on the recording medium. Since the reproducing means controls the recording on the recording medium, the additional information can be recorded on the recording medium without interfering with the recording of the information data during the intermittent recording of the information data.

Further, in the recording / reproducing method according to the present embodiment, the information data is compressed audio data and the additional information is compressed still picture information. The compressed still image information can be separately recorded in each area of the recording medium by a predetermined amount.

In the recording / reproducing method according to the present embodiment, when the additional information not recorded on the recording medium is stored in the storage means, other additional information is stored in the storage means. Since the storage is prohibited, the process of writing or reading the additional information to the storage means can be simplified, and the information data and the additional information can be separately recorded on the recording medium.

In the above-described embodiment,
Although the optical disk 20 has been described as being an MD, other optical disks, for example, a digital versatile disk (D
VD), a rewritable CD-ROM, or a magneto-optical disk (MO).

[0047]

According to the present invention, there is provided a recording / reproducing apparatus for recording or reproducing information data by a recording / reproducing means on a recording medium on which information data is recordable. A storage unit that can be stored in an independent storage area, and the additional information is stored in the storage unit even while the information data is being recorded on the recording medium by the recording / reproducing unit. Control means for recording the additional information on the recording medium by the recording / reproducing means during non-recording on the recording medium, so that the additional information can be recorded on the recording medium without obstructing the recording of the information data. This has the effect.

Further, in the recording / reproducing apparatus according to the present invention, the information data is compressed audio data,
Since the additional information is the compressed still image information, it is possible to record the compressed still image information in a predetermined amount separately in each area of the recording medium without obstructing the recording of the compressed audio data.

In the recording / reproducing apparatus of the present invention, when the additional information not recorded on the recording medium is stored in the storage means, the other additional information is stored in the storage means. Since this is prohibited, the process of writing or reading the additional information to or from the storage means can be simplified, and the information data and the additional information can be separately recorded on the recording medium.

The recording / reproducing method of the present invention is a recording / reproducing method for recording or reproducing information data on a recording medium on which information data is recordable by a recording / reproducing means. Enabling storage in independent storage areas of storage means, and during the intermittent recording of the information data on the recording medium by the recording / reproducing means, storing the additional information in the storage means;
During the non-recording of the information data on the recording medium, the additional information is controlled so as to be recorded on the recording medium by the recording / reproducing means. There is an effect that the additional information can be recorded on the recording medium without hindrance.

Further, in the recording / reproducing method according to the present invention, the information data is compressed audio data,
Since the additional information is the compressed still image information, it is possible to record the compressed still image information in a predetermined amount separately in each area of the recording medium without obstructing the recording of the compressed audio data.

In the recording / reproducing method according to the present invention, when the additional information not recorded on the recording medium is stored in the storage means, other additional information is stored in the storage means. Since this is prohibited, the process of writing or reading the additional information to or from the storage means can be simplified, and the information data and the additional information can be separately recorded on the recording medium.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a magneto-optical recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing allocation in a RAM (memory) according to the embodiment of the present invention.

FIG. 3 is a flowchart illustrating a recording operation according to the embodiment of the present invention.

[Explanation of symbols]

1 ... magneto-optical recording / reproducing device, 2 ... terminal, 3 ... terminal,
4 ... terminal 5 ... buffer amplifier 6 ... buffer amplifier 7 ... D / A conversion circuit 8 ... A / D conversion circuit
9 ATRAC encode / decode circuit 10 10
Memory control circuit, 11 ... RAM, 12 ...
MD format encoding / decoding circuit, 13 ...
Microcomputer, 14 ACIRC encode / decode circuit, 15 servo circuit, 16 RF amplifier, 17
... Optical pickup, 18 ... Driver, 19 ... Magnetic head, 20 ... Optical disk, 21 ... Spindle motor, 22 ... JPEG encode / decode circuit, 2
3 Display part, 24 Key, 25 Area 2 (JP
EG data), 26 ... area 1 (for ATRAC data), 27 ... AUX U-TOC data area, 2
8 ... U-TOC data area,

Continued on the front page (72) Inventor Tsutomu Harada 6-7-35 Kita-Shinagawa, Shinagawa-ku, Tokyo Sony Corporation F-term (reference) 5C052 AA03 AA17 AB04 AB06 CC11 DD06 5D044 AB05 AB08 BC06 CC04 DE03 DE17 DE49 DE57 EF05 FG18 GK08 GK12

Claims (6)

[Claims] 1. A recording / reproducing apparatus for recording / reproducing information data by a recording / reproducing means on a recording medium on which information data is recordable, wherein said information data and its additional information can be stored in independent storage areas. The additional information is stored in the storage means even while the information data is being recorded on the recording medium by the recording / reproducing means, and the additional information is stored while the information data is not being recorded on the recording medium. Control means for recording information on the recording medium by the recording / reproducing means. 2. The recording / reproducing apparatus according to claim 1, wherein said information data is compressed audio data, and said additional information is compressed still picture information. 3. The recording / reproducing apparatus according to claim 1, wherein when the additional information not recorded on the recording medium is stored in the storage means, other additional information is stored in the storage means. A recording / reproducing apparatus characterized in that recording is prohibited. 4. A recording / reproducing method for recording / reproducing information data by a recording / reproducing means on a recording medium on which information data is recordable, wherein said information data and its additional information are stored in independent storage areas of a storage means. During the intermittent recording of the information data on the recording medium by the recording / reproducing means, the additional information is stored in the storage means, and during the non-recording of the information data on the recording medium, A recording / reproducing method, wherein the additional information is controlled to be recorded on the recording medium by the recording / reproducing means. 5. The recording / reproducing method according to claim 4, wherein said information data is compressed audio data, and said additional information is compressed still picture information. 6. The recording / reproducing method according to claim 4, wherein when the additional information not recorded on the recording medium is stored in the storage means, other additional information is stored in the storage means. Recording / reproducing method, wherein the recording is prohibited.