JP2006127754A - Information recording and reproducing device and information recording and reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To shorten a time for disk format of a disk in which overwriting of data for a CD-RW disk or the like is enabled. <P>SOLUTION: A drive controller 7 records, reproduces, and erases tracks consisting of a plurality of packets for a CD-RW disk 1 in which data can be overwritten, at the time of formatting the CD-RW disk 1, data recording to a user data part on the disk is omitted, and data are recorded in only a track information recording region (TOC) and a program memory region (PMA). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information recording / reproducing apparatus and information for recording, reproducing, and erasing information on a CD-R disc, CD-RW disc, and other recording media capable of recording / reproducing information and requiring formatting. The present invention relates to a recording / reproducing method.

  2. Description of the Related Art Conventionally, an optical disc recording apparatus that manages packets in which data is not recorded in an optical disc on an optical disc, quickly finds the packets in which data is not recorded, and shortens the time when recording and reproducing packets directly on the optical disc (For example, see Patent Document 1).

  A compact disc (Compact Disc: CD) capable of recording information (data) includes a CD-R disc (Compact Disc Recordable: a disc on which data can be recorded only once in the same area), and a CD. -There is a RW disk (Compact Disc Rewriteable: a disk on which data can be overwritten in the same area).

As a feature of the CD-R disc and the CD-RW disc, there is ATIP (Absolute Time In Pre-groove) on the disc.
ATIP is a groove on a CD-R disc or CD-RW disc (referred to as “groove”), and the groove is subject to fine vibration (referred to as “wobble”). Time information, disc information, etc. are recorded in the ATIP format.

  When recording / reproducing data to / from a CD-R disc or CD-RW disc, it is possible to find a position for reading / writing by time information or know the intensity of laser light when recording data by disc information. it can.

  The smallest unit that can be played back on a CD-R disc or a CD-RW disc includes a unit called a block, and one block contains 2048 to 2352 bytes (bytes) of data.

  There is a unit called a packet as a minimum unit that can be recorded. One or more reproducible user data blocks, a preceding five link blocks (one link block (Link Block), and four run-in blocks ( Run-in block) and the following two blocks for links (referred to as run-out blocks).

The number of user data blocks in this packet is called the packet length.
As means for recording data on CD-R discs and CD-RW discs, there are recording methods called track-at-once method and packet write method.

The track-at-once method is a method in which tracks (recording units capable of recording up to 99) are recorded all at once in one packet.
Information such as the start address and the end address of the track is recorded as a PMA (Program Memory Area) or TOC (Table Of Contents) in another area on the medium.

  There is a pre-gap consisting of 150 blocks or 225 blocks in front of one track, and the user data field in the pre-gap records information on the attribute of the track such as the packet length of a fixed-length packet in the track. Has been.

  The packet write method is a method of dividing the track into a plurality of packets and recording each packet.

  There are two types of recording methods, a fixed-length packet write method and a variable-length packet write method. A method in which the packet length is fixed in the track is called a fixed-length packet write method, and the packet length of each packet in the track Various methods are called variable-length packet write methods.

As a file system using this fixed length packet, there is UDF (Universal Disk Format).
UDF is a file system that can be easily recorded / reproduced / erased in file units on a CD-RW disc, such as a hard disk drive (HDD) or floppy disk drive (FDD).

Since playback can be performed in units of blocks and recording can be performed in units of packets, recording / playback / erasing can be performed at random.
In UDF, in order to enable random access to a CD-RW disc in this way, it is necessary to perform format processing on the disc once.

The formatting process is an operation of recording and filling a fixed-length packet on the entire surface of a CD-RW disc or a designated area.
By performing this formatting process, data can be randomly recorded / reproduced / erased on the CD-RW disc.
JP 09-288883 A

  However, the above-described formatting process has a problem that the processing time becomes very long because the entire surface of the CD-RW disc or the designated area is filled with packets.

  For example, since the recording capacity of a CD-RW disc is 74 minutes (650 Mbytes) in time display, if TOC information is included, a format processing time of about 40 minutes is required even if recording is performed at double speed.

  In UDF, once a CD-RW disc is formatted, data can be recorded / reproduced / erased at random, but when using a blank disc, the user waits about 40 minutes. Will have to.

  However, since the start address and end address of the track can be known from the TOC information and PMA information, and the packet length of the fixed length packet can be known from the pregap information, the entire surface of the disk or the designated area can be fixed length. Even if it is not filled with packets, it is possible to access the disk at random.

  The present invention has been made in view of the above points, and an object of the present invention is to reduce the format time for a recording medium such as a CD-RW disc capable of overwriting data in packet units.

In order to achieve the above object, the present invention provides the following information recording / reproducing apparatus and information recording / reproducing method.
(1) An information recording / reproducing apparatus comprising means for recording and reproducing information on a track composed of a plurality of recording units with respect to a recording medium capable of overwriting data, wherein the information on the track is recorded on the recording medium. When the recording unit is a blank portion when recording processing of data on the recording medium and reproduction processing of data from the recording medium are not performed, predetermined data is recorded on the track. An information recording / reproducing apparatus comprising means for preventing predetermined data from being recorded on the track when the recording unit is not a blank portion.
(2) The information recording / reproducing apparatus according to (1), wherein the track information is recorded in a lead-in area of the recording medium.
(3) The information recording / reproducing apparatus according to (1) or (2), wherein the track information is recorded at a start address of the track.
(4) The information recording / reproducing apparatus according to any one of (1) to (3), wherein the track information is recorded at an end address of the track.

(5) The information recording / reproducing apparatus according to any one of (1) to (4), wherein the recording unit is a fixed-length recording unit.
(6) In the information recording / reproducing apparatus according to any one of (1) to (5), the recording medium has a disk shape, and the means for recording the track information receives predetermined data from the inner circumference side of the track. An information recording / reproducing apparatus for recording.
(7) In the information recording / reproducing apparatus according to any one of (1) to (6), an address is detected from information formatted in a wobble of a groove formed on the recording medium, and based on the detected address An information recording / reproducing apparatus for recording data.
(8) An information recording / reproducing apparatus comprising means for recording and reproducing information on a recording medium capable of overwriting data, the means for storing a final address of data recorded on the recording medium, When the recording position of the data recorded by the means for recording data on the recording medium and the means for recording the data is larger than the final address, the recording position is recorded in the storing means, and the recording position is An information recording / reproducing apparatus provided with means for preventing the recording position from being recorded in the storage means when it is equal to or less than the final address.

(9) The information recording / reproducing apparatus according to (8), wherein the final address is read from information recorded in a wobble of a groove formed on the recording medium.
(10) The information recording / reproducing apparatus according to (8) or (9), wherein the means for storing the final address is a buffer.
(11) An information recording / reproducing method for recording and reproducing information on a track composed of a plurality of recording units with respect to a recording medium capable of overwriting data, the step of recording the information on the track on the recording medium; When recording processing of data on the recording medium and reproduction processing of data from the recording medium are not performed, if the recording unit is a blank portion, predetermined data is recorded on the track, and the recording unit An information recording / reproducing method comprising a step of not recording predetermined data on the track when is not a blank portion.
(12) The information recording / reproducing method of (11), wherein the track information is recorded in a lead-in area of the recording medium.

(13) The information recording / reproducing method according to (11) or (12), wherein the track information is recorded at a start address of the track.
(14) The information recording / reproducing method according to any one of (11) to (13), wherein the track information is recorded at an end address of the track.
(15) The information recording / reproducing method according to any one of (11) to (14), wherein the recording unit is a fixed-length recording unit.
(16) In the information recording / reproducing method according to any one of (11) to (15), the recording medium has a disc shape, and the step of recording the information on the track is performed by inputting predetermined data from the inner circumference side of the track. Information recording / reproducing method for recording.

(17) In the information recording / reproducing method according to any one of (11) to (16), an address is detected from information formatted in a wobble of a groove formed on the recording medium, and based on the detected address An information recording / reproducing method for recording data.
(18) An information recording / reproducing method for recording and reproducing information on a recording medium capable of overwriting data, the step of storing a final address of data recorded on the recording medium; When the data recording position recorded by the data recording step and the data recording step is larger than the final address, the recording position is recorded by the storing step, and the recording position is equal to or less than the final address. In the case, the information recording / reproducing method includes a step of not recording the recording position by the storing step.
(19) The information recording / reproducing method according to (18), wherein the final address is read from information recorded in a wobble of a groove formed on the recording medium.
(20) The information recording / reproducing method according to (18) or (19), wherein the step of storing the final address stores the final address in a buffer.

  The information recording / reproducing apparatus and the information recording / reproducing method according to the present invention can reduce the format processing time because a minimum recording process is required when formatting a disc such as a CD-RW disc.

Hereinafter, the best mode for carrying out the present invention will be specifically described with reference to the drawings.
FIG. 1 is a diagram showing the configuration of a CD-RW drive according to an embodiment of the present invention.
The CD-RW drive includes a motor 2 that rotates a CD-RW disc 1 that is a recording medium on which data can be overwritten at an arbitrary rotation speed, and a rotation control unit 3 that controls the motor 2.

  The pickup 4 that irradiates the CD-RW disc 1 with the laser beam L, the laser drive circuit 9 that drives the laser beam L of the pickup 4, and the actuator controller 5 that controls the pickup 4 to move in the radial direction. And a signal control unit 6 for controlling a signal from the pickup 4.

Furthermore, an external interface 10 for exchanging various data and command signals with the host computer 11, a buffer 8 which is a temporary storage location (temporary storage area) for data sent from the host computer 11, and the CD- A drive controller 7 that controls the entire RW drive and executes various processes according to the present invention is also provided.
The drive controller 7 is realized by a microcomputer including a CPU, a ROM, a RAM, and the like.

That is, the drive controller 7 or the like records, reproduces, and deletes a track made up of a plurality of packets with respect to a recording medium on which data can be overwritten, and user data on the recording medium during recording medium formatting It fulfills the function of simple formatting means that omits the recording of data to the copy.
Further, when data is not recorded and reproduced on the recording medium, it also functions as means for recording predetermined data on all blank portions existing in the format area on the recording medium.

Further, during the recording medium formatting process, data recording to the user data portion on the recording medium is omitted, and the function of means for recording only the track information recording area (TOC area) and the program memory area (PMA area) is achieved. .
In addition, an address is detected from the ATIP formed on the recording medium, and data is recorded based on the detected address.

  Further, the buffer 8 corresponds to a means for storing the final recording address in the format area on the recording medium when data is recorded on the recording medium, and the drive controller 7 or the like records data on the recording medium. When reproduction is not being performed, it functions as a means for recording predetermined data only to a blank portion located inside the last recording address stored in the means.

FIG. 2 is a diagram showing the format of the data recording area of the CD-RW disc 1.
The CD-RW disc 1 has a power calibration area (Power Calibration Area: PCA) 20, a program memory area (Program Memory Area: PMA) 21, a lead-in area (Lead-in Area) 22, a program area (from the inner periphery). Program area) 23.

The PCA 20 is an area for performing recording power calibration when data is recorded on the CD-RW disc 1.
The area has 100 test areas and 100 count areas. When this CD-RW drive records data (information) on the CD-RW disc 1 for the first time, the laser power of the PCA (the area) is Calibration (OPC) is performed, and an appropriate recording power value at the time of data recording is set for the CD-RW disc 1.

The PMA 21 is an area for recording track information.
The lead-in area 22 is an area indicating the beginning of the session 30, and is an area for recording track information (TOC) in the session 30.
The session 30 is one unit composed of one or a plurality of tracks (in the figure, tracks 1 and 2) and a lead-out area 25.

  The program area 23 is an area in which user data is recorded. Data is recorded in units of tracks 24. Information such as the start address, end address, and data mode of the track 24 is in the PMA 21 and the lead-in area 22. It is recorded with the content called TOC. Information on the track 24 included in the session 30 is recorded in the TOC.

The track 24 is an area where the user records data such as files and music.
The lead-out area 25 is an area indicating the end of the session 30.

FIG. 3 is a diagram showing an ATIP format on the CD-RW disc 1.
ATIP is a groove in an unused CD-RW disc, and time information and disc information are recorded in the groove by fine vibration (wobble). In the figure, “Minutes” and “Seconds” are expressed in 60-base numbers, and “Frame” is expressed in 75-base numbers.

FIG. 4 is a diagram showing a track format in which information is recorded by the track-at-once method.
The track 40 is composed of one packet.
When the track-at-once method is used, it is specified that the user data block 41 must be at least 300 blocks.

The pre-gap (PreGap) area 42 is composed of 150 blocks or 225 blocks, is located at the head of the track 40, and information on the attribute of the track is recorded in the user data field in the pre-gap area.
The link block 43 is composed of one block, and is a block that means a connection between tracks.

The run-in block 44 includes 4 blocks and is a block that represents the head of the track 40.
The user data block 41 is an area for recording data transferred from the user (host computer 11).
The run-out block 45 is composed of two blocks and means the end of the track 40.

FIG. 5 is a diagram showing a track format in which information is recorded by the packet write method.
The track 50 recorded by the packet write method is composed of a pre-gap area 51 and a user data part 52, and the user data part 52 is composed of a plurality of packets 53.

The pre-gap region 51 is the same as the content shown in FIG.
The packet 53 is a group of sectors existing in the track 50, and the minimum unit is one sector. In the packet write method, the packet 53 is recorded at a time.

A link block (Link Block) 54 is composed of one block and means a connection between packets.
The run-in block 55 is composed of four blocks and is a block that means the head of the packet 53.

The user data block 56 is an area for recording data transferred from the user (host computer 11).
A run-out block 57 includes two blocks and is a block that means the end of the packet 53.

The CD-RW drive records this packet 53 by one write process.
Compared to the track-at-once method, the user data block 56 can be recorded from a minimum of one block in the packet write method.

By using a file system, it can be handled like a hard disk or floppy disk. This is an advantage of the packet write method.
Furthermore, there are two types of packet write methods, a fixed-length packet and a variable-length packet, as a recording method.

FIG. 6 is a flowchart showing a simple format process of the CD-RW disc 1 in this CD-RW drive.
When the drive controller 7 receives the format processing command from the host computer 11, the drive controller 7 checks whether the CD-RW disc 1 is inserted, determines whether or not there is a disc (S1), and the CD-RW disc 1 If it is inserted, it is determined that there is a disk, and the pre-gap area of the recording area on the CD-RW disk 1 is recorded (S2).

  Thereafter, it is determined whether or not the recording of the pre-gap area is normally completed (S3). When the recording of the pre-gap area is normally completed, the PMA area is then recorded (S4).

Thereafter, it is determined whether or not the recording of the PMA area is normally completed (S5). When the recording of the PMA area is normally completed, the TOC area is recorded (S6).
Then, it is determined whether or not the recording of the TOC area has been completed normally (S7). If the recording of the TOC area has been completed normally, it is determined that the simple formatting process for the CD-RW disc 1 has been completed normally. finish.

  On the other hand, in the determination of whether or not there is a disc (S1), when it is determined that the CD-RW disc 1 is not inserted and there is no disc, or whether or not the recording of the pre-gap area has ended normally ( In S3), when the pre-gap area recording ends abnormally (error), or when the PMA area recording ends normally (S5), the PMA area recording ends abnormally (error). ), An error code is set for each (S8), and this process is terminated with an error.

  In this way, when the CD-RW disc 1 is formatted, the process of filling the entire surface of the disc or the designated area with fixed-length packets is omitted, and only the TOC area, PMA area, and pre-gap area on the disc are recorded. Thus, the formatting time can be greatly shortened.

FIG. 7 is a flowchart showing an information recording process for the CD-RW 1 that has been subjected to the simple formatting process in the CD-RW drive.
Normally, data is recorded also in the track area during formatting in the CD-RW drive, so that the recording address can be detected by the recorded sub code (Sub Code).

  However, since the sub-code is not recorded in the CD-RW drive of this embodiment, data is recorded by performing address detection by ATIP as in the case of the blank disk.

  When receiving a data recording processing command from the host computer 11, the drive controller 7 reproduces the ATIP on the CD-RW disc 1 (S11), and seeks to the recording position on the disc where the data is actually recorded (S12). The data is recorded on the seek destination on the CD-RW disc 1 (S13).

  Thereafter, it is determined whether or not the data recording on the CD-RW disc 1 has been normally completed (S14). If the data can be normally recorded on the CD-RW disc 1, the data recording process is normally performed. It is determined that the process has been completed, and the process ends.

  On the other hand, if the data recording process has ended normally (S14), if the data recording has ended abnormally without being performed normally, it is determined that the data recording process has not ended normally, and an error code is set. (S15) This process ends with an error.

  By the way, the CD-RW disc 1 that has been formatted by the above-described simple formatting process cannot be reproduced by a general CD-ROM drive as it is.

  This is because a general CD-ROM drive cannot reproduce the ATIP on the CD-RW disc 1, and therefore cannot recognize the position of the blank portion existing between the data, and reproduces the blank portion. This is because the position is lost and all data cannot be reproduced.

  In order to be able to reproduce the CD-RW disc 1 with the CD-ROM drive, it is sufficient that no blank portion exists in the formatted area on the disc.

  Therefore, when this CD-RW drive is not used by the user (host computer 11), data is recorded on the blank portion of the CD-RW disc 1 that has been subjected to the above-described simple formatting process. The recording unit is eliminated, and the CD-RW disc 1 can be reproduced by other CD-ROM drive devices.

FIG. 8 is a flowchart showing blank portion recording processing of the CD-RW disc 1 in this CD-RW drive.
The blank portion is detected by reproducing the packet 53 existing on the track 50 from the beginning.

The drive controller 7 sets the packet number n (the initial value of n is “1”) to be recorded first (S21).
The packet number n is packet numbers 1, 2, 3,... N from the beginning of the track.

  The drive controller 7 determines whether or not there is no access for a predetermined time from the host computer 11, and determines that there is no access when there is no access for a predetermined time since the last access to the drive from the host computer 11 (S22). ) The first packet is reproduced to check whether it is a blank part (S23).

  Thereafter, it is determined whether or not the first packet is a blank part. When it is determined that the first packet is a blank part (S24), the first packet is configured with data of a predetermined content (for example, “00h”). Data) is recorded (S25).

  When the first packet recording process is finished, it is determined whether or not n = the last packet number (S26). If it is not the last packet number, n is incremented by 1 (S27), and the next packet is processed from S22 to S22. The process of S27 is repeated.

When the packet number n becomes the number of the last packet existing on the CD-RW disc 1 in S26, this process is terminated.
On the other hand, if there is an access within a predetermined time since the last access to the drive from the host computer 11 in S22, this process is terminated without executing.

  If it is determined in S24 that the packet is not a blank part, or if the packet number n does not match the last packet existing on the disk in S26, "1" is added to the packet number n (S27). To return to S22.

  In this way, since the blank portion on the CD-RW disc 1 subjected to the above-described simple disc formatting process is eliminated, it is possible to reproduce with a general CD-ROM drive.

  Next, when the process of recording data having a predetermined content on the blank portion on the CD-RW disc 1 is performed on all the blank portions in the format area, the recording time increases as the amount of the blank portion increases. End up.

  For example, even when data is recorded only inside the format area, data with a predetermined content is recorded to the outside, and therefore it takes time for useless recording processing.

On the other hand, it is useless to repeat the blank portion recording process for all the packets 53 existing on the CD-RW disc 1.
This is because an OS such as Windows 95 (registered trademark) is not accessed after the last address where UDF data is recorded.

Therefore, even a general CD-ROM device does not reproduce after the address, and a reproduction error does not occur.
That is, it is not necessary to perform blank part recording processing after the last part in which data necessary for the OS is recorded, and on the contrary, time is wasted.

  Therefore, in order to omit wasted time, the final address where the user data block 56 is recorded is managed on the buffer 8, and in order to execute this processing, the address to be filled with predetermined data and the address It is always necessary to compare the last address.

FIG. 9 is a flowchart showing another data recording process for the CD-RW disc 1 in this CD-RW drive.
When receiving a data recording processing command from the host computer 11, the drive controller 7 sets a recording position (S31) and records data on the CD-RW disc 1 (S32).

  Thereafter, it is determined whether or not the data recording on the CD-RW disc 1 is normally completed (S33). If the data can be normally recorded on the CD-RW disc 1, it is determined that the data recording is normally completed. The current recording position is compared with the value recorded in the buffer 8 (this value is recorded in the buffer 8 during packet recording), and it is determined whether or not the value recorded in the buffer 8 is smaller than the current recording position. (S34).

When the current recording position is equal to or smaller than the value stored in the buffer 8 and the value recorded in the buffer 8 is not smaller than the current recording position, the process is terminated as it is.
If the recording position is larger than the value stored in the buffer 8, the recording position is stored in the buffer 8 (S35), and this process is terminated.

  On the other hand, if it is determined in S33 that a recording error has occurred and data recording on the CD-RW disc 1 has not been completed normally, an error code is set (S36), and this process ends in error.

FIG. 10 is a flowchart showing another blank portion recording process for the CD-RW disc 1 in this CD-RW drive.
The drive controller 7 first sets the packet number n (n = 1, 2, 3,...) (S41).

  Thereafter, it is determined whether or not there is no access from the host computer 11 for a predetermined time (S42). When there is an access from the host computer 11 within a predetermined time, this processing is not executed and the processing is terminated.

  On the other hand, when there is no access to the drive from the host computer 11 within the predetermined time in S42, it is determined that there is no access, and the nth packet is reproduced to check whether it is a blank part (S43). .

  Based on the nth packet reproduction process (S43), it is determined whether or not the nth packet is a blank part (S44). If it is determined that the packet is not a blank part, “1” is added to the packet number n. Then (S47), the process returns to S42.

  If it is determined in S44 that the nth packet is a blank part based on the nth packet reproduction process (S43), data having a predetermined content is recorded in the packet (S45).

Then, it is determined whether or not the packet number n ≧ the value (packet number) stored in the buffer (S46), and when the packet number n is smaller than the value stored in the buffer 8, The packet number n is incremented by “1” (S47), and the process returns to S42.
Alternatively, when the packet number n is greater than or equal to the value stored in the buffer 8, this process is terminated.

  In this way, at the time of the above-described disc format processing, data having a predetermined content is not only for all blank portions in the format area, but only for the blank portion inside the final recording address in the format area. Therefore, the blank part recording process can be performed only on the necessary packets, and the formatting process can be completed earlier.

According to this CD-RW drive, when formatting a recording medium for recording data in units of packets, the process of filling the entire surface of the recording medium or a designated area with fixed-length packets is omitted, and data recording and recording on the recording medium are performed. When reproduction is not being performed, a simple format process for recording predetermined data is performed on all blank portions existing in the format area on the recording medium. It can be played back by a drive such as a CD-ROM drive.
Further, since only the track information recording area and the program memory area are recorded at the time of the simple formatting process, the formatting time can be greatly shortened.
Furthermore, an address can be detected from the ATIP formed on the recording medium, and data can be recorded based on the detected address.
Furthermore, when processing the simple format as described above, data of a predetermined content is not only for all blank portions in the format area but only for the blank portion inside the final recording address in the format area. Since the recording process is performed, the formatting process can be completed more quickly.
In the above embodiment, the simple format process and the blank part recording process according to the present invention in the CD-RW drive have been described. However, the recording medium is not limited to the CD-RW disc, and information can be recorded and reproduced. The information can be re-recorded, and can be applied to all information recording / reproducing apparatuses for other recording media that require format processing.

It is a figure which shows the structure of the CD-RW drive of one Embodiment of this invention. 2 is a diagram showing a format of a data recording area of a CD-RW disc 1. FIG. FIG. 2 is a diagram showing an ATIP format on a CD-RW disc 1; It is a figure which shows the track format which recorded the information by the track at once system. It is a figure which shows the track format which recorded the information by the packet write system.

2 is a flowchart showing a simple format process of a CD-RW disc 1 in the CD-RW drive shown in FIG. 2 is a flowchart showing an information recording process for a CD-RW 1 subjected to a simple format process in the CD-RW drive shown in FIG. 2 is a flowchart showing blank part recording processing of a CD-RW disc 1 in the CD-RW drive shown in FIG. 1. 7 is a flowchart showing another data recording process for the CD-RW disc 1 in the CD-RW drive shown in FIG. 1. 6 is a flowchart showing another blank part recording process for the CD-RW disc 1 in the CD-RW drive shown in FIG. 1.

Explanation of symbols

1: CD-RW disk 2: Motor 3: Rotation control unit 4: Pickup 5: Actuator control unit 6: Signal control unit 7: Drive controller 8: Buffer 9: Laser drive circuit 10: External interface 11: Host computer 20: PCA 21: PMA 22: Lead-in area 23: Program area 24: Track 25: Lead-out area 30: Session 40, 50: Track 41, 56: User data block 42, 51: Pre-gap area 43, 54: Link block 44, 55: Run-in block 45, 57: Run-out block 52: User data part 53: Packet

Claims (20)

An information recording / reproducing apparatus comprising means for recording and reproducing information on a track composed of a plurality of recording units with respect to a recording medium capable of overwriting data,
Means for recording the track information on the recording medium;
When recording processing of data on the recording medium and reproduction processing of data from the recording medium are not performed, if the recording unit is a blank portion, predetermined data is recorded on the track, and the recording unit An information recording / reproducing apparatus, comprising: means for preventing predetermined data from being recorded on the track when is not a blank portion.   2. The information recording / reproducing apparatus according to claim 1, wherein the track information is recorded in a lead-in area of the recording medium.   3. The information recording / reproducing apparatus according to claim 1, wherein the track information is recorded at a start address of the track.   The information recording / reproducing apparatus according to claim 1, wherein the track information is recorded at an end address of the track.   The information recording / reproducing apparatus according to claim 1, wherein the recording unit is a fixed-length recording unit.   6. The information according to claim 1, wherein the recording medium has a disk shape, and the means for recording the track information records predetermined data from an inner circumference side of the track. Recording / playback device.   7. An address is detected from information formatted in a wobble of a groove formed on the recording medium, and data is recorded based on the detected address. The information recording / reproducing apparatus according to one item. An information recording / reproducing apparatus comprising means for recording and reproducing information on a recording medium capable of overwriting data,
Means for storing a final address of data recorded on the recording medium;
Means for recording data on the recording medium;
When the recording position of the data recorded by the means for recording data is larger than the final address, the recording position is recorded in the storing means, and when the recording position is equal to or less than the final address, the recording position is An information recording / reproducing apparatus comprising: means for preventing recording from being stored in the storing means.   9. The information recording / reproducing apparatus according to claim 8, wherein the final address is read from information recorded in a wobble of a groove formed on the recording medium.   10. The information recording / reproducing apparatus according to claim 8, wherein the means for storing the final address is a buffer. An information recording / reproducing method for recording and reproducing information on a track composed of a plurality of recording units with respect to a recording medium capable of overwriting data,
Recording the track information on the recording medium;
When recording processing of data on the recording medium and reproduction processing of data from the recording medium are not performed, if the recording unit is a blank portion, predetermined data is recorded on the track, and the recording unit And a step of preventing predetermined data from being recorded on the track when the data is not a blank portion.   12. The information recording / reproducing method according to claim 11, wherein the track information is recorded in a lead-in area of the recording medium.   13. The information recording / reproducing method according to claim 11, wherein the track information is recorded at a start address of the track.   14. The information recording / reproducing method according to claim 11, wherein the track information is recorded at an end address of the track.   15. The information recording / reproducing method according to claim 11, wherein the recording unit is a fixed-length recording unit.   16. The information according to claim 11, wherein the recording medium has a disk shape, and the step of recording the track information records predetermined data from an inner circumference side of the track. Recording and playback method.   The address is detected from information formatted in a wobble of a groove formed on the recording medium, and data is recorded based on the detected address. The information recording / reproducing method described. An information recording / reproducing method for recording and reproducing information on a recording medium capable of overwriting data,
Storing a final address of data recorded on the recording medium;
Recording data on the recording medium;
When the recording position of the data recorded by the step of recording the data is larger than the final address, the recording position is recorded by the storing step, and when the recording position is equal to or less than the final address, the recording position is An information recording / reproducing method comprising: a step of preventing recording by a storing step.   19. The information recording / reproducing method according to claim 18, wherein the final address is read from information recorded in a wobble of a groove formed on the recording medium. 20. The information recording / reproducing method according to claim 18, wherein the step of storing the final address stores the final address in a buffer.

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