JPH1040666A - Spin-up method for optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce spin-up processing time of a DRAW type optical disk in an optical disk device used in an information processing system. SOLUTION: The procedure of spin-up processing in an optical disk device is performed continuously in the recorded order of the collection operation of TOC information in the read-in area of each section and the collection operation of track information of a track selectively recorded by a fixed recording method. In this case, after the collection is performed of the TOC information in the read-in area of the initial session, the plural tracks in the same session are successively repeatedly processed (step 5 to 10). If the track during the processing is discriminated as the last track, the similar steps are repeated. With the collection no longer possible of the TOC information, the spin-up processing is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device having a reproducing function used in an information processing system, and more particularly to a spin-up process of a write-once optical disk device such as a CD-WO disk device. is there.

[0002]

2. Description of the Related Art There is a recordable write-once optical disk device in an optical disk device. As an example, a CD-WO (C
There is a write-once (write-once) disk device of the D standard. The optical disk used for it, ie, CD-W
O disk is Orange Book Part 2 (Orange
It is used for recording music information and computer information created according to the [Book Part 2] standard. Hereinafter, a CD-WO using the CD-WO disc will be described.
The spin-up process in the disk device and related matters such as standards related to the spin-up process will be described.

[0003] First, a related matter relating to a spin-up process of a CD-WO disk device will be described.
-The WO disk has an ATIP (Absolute Time) wobbled before recording data.
in Pre-groove) data is recorded. Since the ATIP data includes data relating to absolute time (minutes, seconds, and frames) on the CD-WO disk, a CD-WO disk device that can read the ATIP data seeks to an unrecorded area. Processing becomes easy.

FIG. 3 schematically shows the structure of a packet which is a recording unit of data recorded on a CD-WO disc.
User data 26 having one or more blocks of the minimum unit of bytes, the front seam data having the five blocks provided in front of the user data 26, and the rear of the user data 26 And rear joint data having the two blocks provided. The front seam data and the rear seam data are collectively called link blocks.

[0005] The total number of blocks constituting the user data 26 is called a packet size, and the blocks constituting the forward seam data are a link block (Link Block) 21 and a run-in 1 block ( Run-in2 block 22, Run-in2 block 2
3, Run-in3 block
k) 24, Run-in 4 b
The blocks constituting the backward seam data are, in order from the front, a run-out 1 block (Run-out 1 block) 27 and a run-out 2 block (Run-out 2 block) 28.
is called.

FIG. 4 shows a structure of a session which is a unit of data reproduction, and this session is a CD-W.
It is recorded so as to form a lead-in area 31, a program area 32, and a lead-out area 33 in this order from the inner peripheral side of the O disk. The program area 32 is an area in which user data transmitted from a host system (not shown) is recorded. The program area 32 is composed of a single track or a plurality of tracks each including a predetermined number of packets (Max 99 for the entire CD-WO disc). In the figure, as an example, the tracks are indicated by a first track 32a and a second track 32b arranged in the recording order. A state in which a plurality of sessions exist in the CD-WO disc is called a multi-session.

In order to manage data on the CD-WO disc for each track recorded in the program area 32 of the session, the lead-in area 31 has an index of each track of the session in which the lead-in area 31 is located. Information, for example, TOC (Table of
Contents) data has been written.

The TOC data includes a start time, a recording format (indicating either an audio track or a data track), recording division (collective recording (being a disk-at-once method or track-at-once method) / division recording ( Packet writing method)), the track number added to each track existing in the session, the start time of the program area 32 of the next adjacent session recorded next, and the like. The lead-out area 33 is data for indicating the end of the user data area.

A recording procedure when data to be recorded on an optical disk is formed as a session will be described.
More than one track is formed. When conditions for forming a session are established such that one continuous information is recorded by using an arbitrary number of tracks (32a,...), The lead-in area 31 and the lead-out area 33 are recorded. The session is determined by completing all the components.

When the session is confirmed, the CD-WO
Since the disc can be reproduced when one or more confirmed sessions exist, the user data in the program area 32 belonging to the session can be reproduced as information data for the first time.

Next, the recording method of the CD-WO disk device will be described in detail.
(Cat Once) method, a track-at-once (Tr) recording the program area 32 by dividing the program area 32 in track units.
ack at once), packet writing (Pa) that divides a track into a plurality of packets and records them
ticket writing). The packet writing method is a fixed-length recording method (Fixed Packet Write) in which the packet size is fixed.
ng) and a variable length recording method (Variab) having a variable length.
le Packet Writing).

In other words, except for the disk-at-once method, a CD-WO disk is divided into a plurality of pieces and recorded, and the recording method can be changed for each track. Further, whether or not each track has been recorded at a time can be determined from the TOC data. However, in order to determine the detailed recording method, a pre-gap ( PreGap)
It is necessary to read the data in.

For access to data reproduction processing on an optical disk, the host system and host interface use logical block addresses.
Since the absolute time (minute, second, frame) is used in the WO disk device, address conversion during that time is required, and two methods are adopted. These two methods are respectively address conversion method 1 (addressing method).
Method 1) and address translation method 2 (addres
Sing Method 2), and their conversion formulas are shown by (Equation 1) and (Equation 2).

[0014]

(Equation 1)

[0015]

(Equation 2)

In the first address conversion method 1, since the link block is included in both the logical block address and the absolute time, the relative relationship between the logical block address and the absolute time is linear, but the other address conversion method is used. In No. 2, since the link block is included in the logical block address but not included in the absolute time, the relative relationship between the logical block address and the absolute time has a step shape.

For this reason, the address conversion method 2 is used only for tracks recorded by the fixed-length recording method, and in order to convert the logical block address and the absolute time in accordance with the address conversion method 2, the address conversion method 2 is used. Information on the start time, end time, and packet size of a track using the method 2 is required for reproducing information data from a CD-WO disc.

The start time of a track is obtained by reading out the TOC data contained in the lead-in area of the session in which the track is located. The end time of the track is determined by each optical disk device. There are two possible acquisition methods depending on the difference in the performance of the apparatus caused by the difference in the standard and the difference in the recording form on the optical disk.

First, a CD-WO disk device and a CD-W
A first acquisition method that can be used with the O disk is to place an unrecorded area on the inner side of the optical disk in the lead-in area, which is the first session recorded first on the optical disk. Since there is a program memory area (hereinafter referred to as PMA) containing the start time and end time information of the recorded track, the ATIP
If it is a CD-WO disk device from which data can be read,
By reading the PMA, the end time of each track is obtained.

Also, an optical disk device having no function of reading the PMA, for example, a CD-DA device for digital audio (hereinafter, referred to as a CD-DA device) uses a CD-ROM.
A second acquisition method that can be considered when reading information data from a WO disk will be described.
Since the TIP data cannot be read, a pre-gap area (given as a recording area) located in front of the next track after the track whose end time is to be known is recorded with reference to the start time of the track read from the TOC data. The start time of the pre-gap area is estimated, and the information collecting means 49 is sought before the start of the pre-gap area (the end of the track whose end time is desired to be known) to start reading data. Then, the specific flag (index of the subcode Q) of the read pregap is set to 0.
The end time of the track whose end time is desired to be obtained is determined by determining where the pre-gap of the succeeding track starts from utilizing (zero).

The acquisition of the packet size can be obtained by reading the information of the packet size written in the pre-gap area of the track recorded by the fixed length recording method. As a result, based on three pieces of information on the start time, end time, and packet size of the track obtained by each of the above-described methods, the relative position in the track such that the designated position to be converted corresponds to the block of which packet in the track. By calculating the position, the address conversion of the logical block address-absolute time can be performed.

Therefore, by performing address translation in the address translation system 2 in the CD-WO disk device, there is obtained an advantage that the host system can continuously reproduce a plurality of packets without being aware of the link block. It will be.

FIG. 5 is a block diagram of a system device including a host system device for performing spin-up processing, reproduction processing, and the like, and a CD-WO disk device. In the figure, the control unit 45 of the CD-WO disk device 44 determines whether or not the optical disk 47 can be reproduced by using a disk determination unit 48 in the spin-up process. If the reproduction is possible, information data necessary for reproduction is collected from the optical disk 47 by using the information collecting means 49.

For stamp disks for CD-DA devices and CD-ROM devices, division recording, that is, 1
Since tracks are not recorded in multiple packets,
Only the TOC data of each session is read and stored in the buffer memory unit 46. Similarly, even in a reproducible CD-WO disc, if there is no track using the address conversion method 1 or 2 in the determined session, there is no division recording, so the TOC data of each session is read. It is only necessary to store the data in the buffer memory 46.

If a track using the address conversion method 2 exists in the determined session, the start of the track is performed in order to perform the address conversion processing in the optical disk apparatus in addition to the above-mentioned information collection. It is necessary to read data related to time, end time, and packet size and store the data in the buffer memory unit 46.

Therefore, when the control unit 45 of the CD-WO disk device receives the reproduction instruction of the reproduction instruction issuing unit 43 output according to the instruction of the control unit 41 of the host system device 40, the control unit 45 preliminarily sets the information collection unit. The information data of the optical disk 47 is reproduced and stored in the buffer memory unit 46 based on the information collected at the time of the spin-up processing of the optical disk 47 by the 49, and the stored information data is further stored in the buffer memory unit of the host system device 40. 42
Transfer to

Next, the spin-up processing in the CD-WO disk device from which the ATIP data can be read will be described with reference to FIGS. 6 and 7. When the optical disk 47 is inserted into the CD-WO disk device, as step 51, The control unit 45 determines whether or not the optical disk can be reproduced by the disk determination unit 48. Never recorded,
Alternatively, if the optical disc cannot be reproduced because there is no confirmed session or the like, the information collection by reproduction is not executed, and the spin-up processing ends.

If it is a playable optical disk, as step 52, the lead-in area 31 of the first session (FIG. 7
), And stores the TOC data in the buffer memory unit 46.

At step 53, it is determined whether or not the first session is the last session recorded on the CD-WO disc. If it is determined that the session is not the last session, the process proceeds to step 54, where the lead-in area 34 of the second session recorded after the first session (located next to the first session). In order to read the TOC from FIG. 7 (shown in FIG. 7), the control unit 45 updates the session number to update the second session as a read target, and places the information collection unit 49 in the lead-in area 34 in the seek S11 (see FIG. 7). 7 and returns to step 52.

Steps 52 to 54 are sequentially repeated, and if the updated session is the final session (the second session in FIG. 7), the process goes to step 53.
When the determination is made in step (5), the process proceeds to step 55, and it is determined whether or not the optical disc being reproduced is a CD-WO disc.

As a method for determining whether or not the session is the last session, a method for determining that there is no pit indicating a recording result at the scheduled lead-in area position in the next session after the seek S12 (shown in FIG. 7). Alternatively, there is a method of making a determination using the fact that the value indicating the program area start time of the next session is set as an invalid value in the TOC of the last session.

In step 55, the discrimination as to whether the disc is a CD-WO disc or not is made by determining whether the ATIP data has been read or read by the information collecting means 49 which has sought to the next session after the last session or to an appropriate position. Discrimination by the disc discriminating means 48. If it is determined that the disc is not a CD-WO disc, the spin-up processing ends.

If it is determined that the disc is a CD-WO disc, at step 56, the information collecting means 49 seeks S13 to the area where the PMA is recorded, and the end time data of each track recorded by the PMA is read from the PMA. The data is read out and stored in the buffer memory unit 46.

At step 57, step 52
First, it is determined whether the first track 32a (shown in FIG. 5) of the first session is batch recording or divided recording based on the TOC information stored in the buffer memory unit 46. If the discriminated first track 32a is batch recording, step 5b
Then, the track determination target is updated to the second track 32b recorded next. Conversely, if the first track 32a is divided recording, the process proceeds to step 58, where the information collecting means 49 seeks to the pre-gap of the first track 32a.

In step 59, it is determined from the pre-gap of the first track 32a whether the first track 32a is recorded by the variable length recording method or by the fixed length recording method. If the recording is performed by the variable length recording method, the process proceeds to step 5b, and the track determination target is updated to the second track 32b recorded next. Conversely, if the data is recorded by the fixed length recording method, the process proceeds to step 5a, where the conversion formula (Equation 2) is used.
And creates a conversion table for the address conversion method 2 based on the above, and stores it in the buffer memory unit 46. Then, the process proceeds to step 5b, where the track determination target is updated to the second track 32b recorded next.

As described above, the process goes through each of the different steps to step 5b, and when the processing target of the track is updated to the next track, the process goes to step 5c and the second updated to step 5b. Truck 32b
Is determined to be greater than the last track number of the last track included in the TOC information. Until it is determined that the updated track number has exceeded the final number, the process returns to step 57 and steps 57 to 5c are repeated. And
When it is determined that the updated track number has exceeded the final number, the spin-up processing ends.

Here, the first track 32a of the first session and the third track 35 of the second session
a is recorded by batch recording, and the second track 32b of the first session and the third track 35b of the second session are recorded by the fixed-length recording method of divided recording. Assuming the case, the operation of the information collecting means 49 along the flow of steps 55 to 5c will be described with reference to FIG.

First, in step 53, the lead-in area 3 of the second session which is the last session
From step 4, the information collecting means 49 having sought S12 to the expected lead-in area position in the next unconfirmed session reads ATIP data at that position (or a predetermined sought position) as step 55, At step 56, the information collecting means 49 sets the PMA
The seek S13 to the area is performed.

First track 3 to be processed first
In the case of 2a, it is determined in step 57 that the data is recorded in the batch recording, so that step 5b
Then, the processing target is updated from the first track 32a to the second track 32b, and the process returns to step 57 via step 5c.

In the case of the second track 32b, it is determined in step 57 that the recording is divided, and the information collecting means 49 performs seek S14 and moves to the pre-gap of the second track 32b. Then, after the data read from the pre-gap is determined to be the fixed length recording method in step 59 and step 5a is performed, the process proceeds to step 5b and the processing target is set to the third track from the second track 32b.
The track is updated to the track 35a, and the process returns to the step 57 via the step 5c.

When it is determined in step 57 that the third track 35a has been recorded by batch recording, the process proceeds to step 5b, where the processing target is updated from the first track 35a to the fourth track 35b. 5
The processing returns to step 57 via c.

The fourth track 35b to be processed last.
Is determined to be divided recording in step 57, the information collecting means 49 performs seek S15 and moves to the pre-gap of the fourth track 35b. Then, after the data read from the pre-gap is determined to be the fixed-length recording system in step 59 and step 5a is performed, the process proceeds to step 5b to change the processing target to a track expected to exist next to the fourth track 35b. It is updated, and it is determined that there is no track expected to exist in step 5c, and the spin-up processing ends.

When the spin-up process is completed, the information collecting means 49 performs a seek S16 near the center of the lead-in area 31 of the first session in which tracking is stable, and ends the information collection related to the address translation system 2. It will be.

[0044]

As described above, in the spin-up method of the conventional optical disk apparatus, when performing the spin-up processing on the write-once optical disk, the TOC
Since the collection of information and the collection of track information using the address translation method 2 are performed independently of each other, a long-distance seek process has occurred. Therefore, in the conventional spin-up method of the optical disk device, it takes too much time to complete the spin-up process, and the host system device 41 must wait for the next instruction to the optical disk device until the spin-up process is completed. A loss time has to be generated, which is inconvenient as a system device.

[0045]

In order to solve the above-mentioned problems, a spin-up method for an optical disk apparatus according to the present invention comprises:
In an optical disc device capable of reproducing an optical disc recorded in a format conforming to various standards such as D-DA and CD-ROM, information collection is performed when it is determined that the disc is a recordable optical disc that can be reproduced. The operation of collecting the TOC information in the lead-in area of the session and the operation of collecting the track information of the tracks recorded by the fixed recording method are sequentially performed in the order of recording.

According to the present invention, in the spin-up processing of the optical disk device, when it is determined that the disk is a re-writable write-once disk, the TOC information of the lead-in area of each session is collected and recorded by the fixed recording method. Since the collecting operation of the track information of the recorded tracks can be performed continuously in the order of recording, the seek distance is shorter than in the conventional case, and the spin-up process can be sped up.

[0047]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A spin-up method for an optical disk device according to a first aspect of the present invention is a spin-up method for an optical disk device having an optical disk reproducing function.
At the time of collecting information from a recordable optical disc that can be reproduced, the collection of TOC information and the collection of track information of tracks recorded by a fixed recording method are performed continuously in the order of recording on the optical disc. Has the effect of shortening the accumulated seek distance and speeding up the spin-up processing.

(Embodiment 1) An embodiment of the present invention described in claim 1 of the present invention will be described below with reference to FIGS. FIG. 1 is a flowchart showing a spin-up method for a CD-WO disk device according to the present invention, and FIG. 2 is a diagram schematically showing the order of seeking by the information collecting means 49 of the CD-WO disk device.

In the figure, the reproduction instruction issuing means 43 output according to the instruction of the control unit 41 of the host system device 40
Is received by the control unit 45 of the CD-WO disk device, the spin-up process is started.

First, in step 11, the control unit 45 determines whether the optical disk 47 inserted in the CD-WO disk device is a reproducible optical disk by the disk determining means 48. If the optical disc 47 has not been recorded or cannot be reproduced because there is no confirmed session or the like, information collection by reproduction is not executed, and the spin-up processing ends.

Next, if the optical disc is a reproducible optical disc, the information collecting means 49 executes ATIP in step 12.
The determination is performed by using the disk determination unit 48 to determine whether data has been read or not. If it is determined that the disc is a CD-WO disc, as a step 13, the information collecting means 49 seeks to an area of the PMA recorded before the lead-in area 31 of the first session, and The data of the end time of each track recorded in each session is read out and stored in the buffer memory unit 46.

Then, the process proceeds to step S14, where the information collecting means 49 seeks (S1) the lead-in area 31 of the first session which has become the first processing target, and moves from the lead area 31 to the first Read out TOC data having information such as the start time of each track recorded in the current session, and whether the recording method of each track is batch recording or divided recording, and data of the start time of the next session. , And those data are stored in the buffer memory unit 4
6 is stored.

On the other hand, in step 12, the CD-WO
If it is determined that the disc is not a disc, the process skips step 13 and shifts to step 14, where the CD-
As in the case where the disc is determined to be a WO disc, the TOC data for each track recorded in the first session is read from the read area 31 and the TOC data is read.
The C data is stored in the buffer memory unit 46. In addition, TO
If the C data cannot be read, the spin-up process ends.

In step 15, the data of the TOC stored in the buffer memory unit 46 in step 14 is the first to be processed first by being recorded first on the CD-WO disk. It is determined whether the first track 32a of the first session is batch recording or divided recording.

If the discriminated first track 32a is divided recording, the process proceeds to step 16, where the information collecting means 49 seeks to the pre-gap of the first track 32a (not shown in FIG. 7). If the first track 32a is for batch recording, the process proceeds to step 1a, where it is determined whether the first track 32a is the last track of the session.

Then, the process proceeds to step 17 to read the data of the pre-gap of the first track 32a, thereby obtaining the data of the packet size written only when the data is recorded by the fixed length recording method, and Data is obtained which can determine whether the recording is performed by the long recording method or the fixed recording method.

If it is determined that the data is recorded by the fixed-length recording method, the process proceeds to step 18 where the conversion formula (Equation 2) is obtained.
A conversion table for the address conversion method 2 based on the data is created, and the created data is stored in the buffer memory unit 46.
To be stored. Then, the process proceeds to step 1a to determine whether the first track 32a to be processed is the last track of the session. If it is determined that the data is recorded by the variable-length recording method, the process skips step 18 and proceeds to step 1a to determine whether the first track 32a to be processed is the last track of the session. I do.

If the first track 32a is not the last track of the session, the process proceeds to step 19, where the track to be processed is updated to the second track 32b, and the process returns to step 15, where the track to be processed is determined in step 1a. The last step 15 to step 19 are sequentially repeated until it is determined that the track is the last track of the session.

If it is determined in step 1a that the track to be processed is the last track of the session, the flow shifts to step 1b to update the processing target to the second session written next. And step 1
Returning to step 4, the information collecting means 49 seeks to the lead-in area 34 of the second session, thereby repeating steps 14 to 1b sequentially. Then, when the information is updated to an unconfirmed session beyond the last session in step 1b, the information collecting means 49 seeks to the expected position where the lead-in area of the unconfirmed session is expected to be located, and step 14 is executed. However, since the TOC information cannot be read from the lead-in area of the undetermined session, the spin-up processing ends.

Here, the first track 32a of the first session and the third track 35 of the second session
a is recorded by batch recording, and the second track 32b of the first session and the third track 35b of the second session are recorded by the fixed-length recording method of divided recording. Assuming this case, the operation of the information collecting means 49 in accordance with the flow of steps 14 to 1b will be described with reference to FIG.

First, the information collecting means 49 which seeks to the area of the PMA recorded before the lead-in area 31 of the first session in step 13
Seek to lead-in area 31 of first session
(S1) Then, in step 14, the TOC data for each track recorded in the first session is read from the read area 31, and the TOC data is stored in the buffer memory unit 46.

If it is determined in step 15 that the first track 32a to be processed first is to be collectively recorded, the process proceeds to step 1a. When it is determined that the first track 32a is not the last track of the session, the processing target is updated to the second track 32b in step 19, and the process returns to step 15.

In step 15, the second track 32
If it is determined that “b” is divided recording, the process proceeds to step 16, and the information collecting unit 49 sets the second track 32 b
(S2). Then, the process proceeds to step 17, when data is read from the pre-gap and it is determined that the second track 32b is recorded by the fixed length recording method, the process proceeds to step 18 and based on the conversion formula (Equation 2). A conversion table for the address conversion method 2 is created, and the created data is stored in the buffer memory unit 46.

Then, the process shifts to step 1a to determine whether the second track 32b to be processed is the last track of the session. If it is determined in step 1a that the first track 32b to be processed is the last track of the session, step 1
b, the information is updated to the second session, and the process returns to step S14.
Then, seek (S3) is performed to read out TOC data for each track recorded in the second session, and store the TOC data in the buffer memory unit 46.

If it is determined in step 15 that the third track 35a to be processed first in the second session is recorded by batch recording, step 1a
Move to When it is determined that the third track 35a is not the last track of the session, the processing target is updated to the fourth track 35b in step 19, and the process returns to step 15.

In step 15, the fourth track 35
When it is determined that “b” is divided recording, the process proceeds to step 16, and the information collecting unit 49 sets the fourth track 35 b
(S4). Then, proceeding to step 17, when data is read from the pre-gap and it is determined that the fourth track 35b is recorded by the fixed length recording method, the process proceeds to step 18 where the fourth track 35b is calculated based on the conversion formula (Equation 2). A conversion table for the address conversion method 2 is created, and the created data is stored in the buffer memory unit 46.

Then, the process shifts to step 1a to determine whether the fourth track 35b to be processed is the last track of the session. In this step 1a, when it is determined that the fourth track 35b to be processed is the last track of the session, the second session having the fourth track 35b is the last session. After the transfer, it will be updated to an unconfirmed session. And step 14
Then, the information collecting means 49 is sought to the expected position where the lead-in area of the undetermined session is expected to be located (S5), and step 14 is performed. Since the TOC information cannot be read, the spin-up processing ends.
In the present embodiment, when ending the spin-up processing, the information collecting means 49 performs a seek (S6). Seek (S) to the lead-in area 31 of the first session
6) is to be done.

Therefore, according to the spin-up method for a CD-WO disk device of the present invention, when collecting information for reproducing a CD-WO disk, the TOC information collecting process and the track of the track recorded by the fixed recording method are performed. Since the information collecting process is performed continuously in the recording order recorded on the CD-WO disk, the accumulated seek distance during seek can be shortened, and the spin-up process can be sped up.

In the case of an optical disk device from which ATIP data cannot be read, when a track using the fixed length recording method can be determined, a portion corresponding to the pre-gap area of the next track is read and a specific flag (sub The number of seeks is further increased by utilizing the fact that the index of the code Q is 0 (zero), but the seek is increased by the spin-up method of the CD-WO disk device of the present invention. The accumulated seek distance at the time can be shortened, and the spin-up processing can be speeded up.

[0070]

As described above, according to the spin-up method of the optical disk apparatus of the present invention, the operation of collecting TOC information of the lead-in area of each session and the fixed recording method, when it is determined that the disk is a playable write-once disk, Since the operation of collecting the track information of the tracks recorded in the step (1) can be performed continuously in the order in which the tracks are recorded, the seek distance becomes shorter than in the past, and the spin-up processing can be performed at higher speed.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a spin-up method for an optical disk device according to Embodiment 1 of the present invention.

FIG. 2 is a diagram schematically showing a seek state of information collecting means performed in a spin-up method of the optical disc device according to the first embodiment of the present invention.

FIG. 3 is a diagram schematically showing a configuration of a packet which is a recording unit in a conventional recording method.

FIG. 4 is a diagram schematically showing a configuration of a session as a data reproduction unit in a conventional recording method.

FIG. 5 is a block diagram showing a conventional system device including a host system and an optical disk device.

FIG. 6 is a flowchart showing a spin-up method of a conventional optical disk device.

FIG. 7 is a diagram schematically showing a seek state of information collecting means performed in a spin-up method of a conventional optical disk device.

[Explanation of symbols]

 31 lead-in area 32a first track 32b second track 34 lead-in area 35a third track 35b fourth track 46 buffer memory unit 49 information collecting means

Claims (1)

[Claims] In a spin-up method for an optical disk apparatus having an optical disk reproducing function, when collecting information on a re-writable write-once optical disk, a TOC information collecting process and a track information collecting process of a track recorded by a fixed recording method are performed. And continuously performing the recording in the order of recording on the optical disk.