JP3134681B2 - Optical disk drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk apparatus for reproducing an optical disk having a table of contents information indicating a storage location of digital data on the disk. Above all, MD
TOC (Table Of Contents) like (mini-disc)
) Or an optical disk device for reproducing an optical disk having UTOC (User's TOC).

[0002]

2. Description of the Related Art In recent years, as optical disks used as recording media, CDs (compact disks) and LDs (laser disks) have become widespread. In addition, due to advances in light modulation technology and magnetic field modulation technology, M
O (magneto-optical disk) and MD (mini-disk) have appeared and become popular.

[0003] There are three types of MDs: a premaster dedicated to reproduction, a recordable that can be reproduced and recorded, and a hybrid having both characteristics. FIG. 26 shows a conceptual diagram of the MD. The pre-master disc has TO
The recordable disc and the hybrid disc have a TOC area and a UTOC area.

[0004] The MD expresses each track by assigning "sections (parts)" to each track (song). A plurality of parts may be assigned as in the m-th song in the figure. As shown in the figure, since the recordable disc has a UTOC area in a recordable area, editing is performed by changing the assignment of parts or changing the assignment by dividing this section. Will be

A part is a continuous area (actual data) in which digital audio data is stored.
The part data is an area (address data) including the address of the part in the TOC / UTOC and the LINK-P, and is actually called “ Area-Descriptor ” in the TOC, and “ Part-Descriptor ” in the UTOC. Called.

FIG. 10 shows a schematic diagram of UTOC. Various information is stored in the header section, including flag information indicating whether this is TOC or UTOC.
First TNO indicates the first song number. If this is 0, it is a raw disk; if it is 1, at least 1
Indicates that the song has been recorded. In the case of a hybrid, this may not be 1 in some cases.

[0007] Last TNO indicates the last music number.
If this is 0, it is a raw disk, and if it is 1 or more, it indicates that the number of songs has been recorded. The buffer area is for the purpose of preventing recording / reproducing failure and the like.
Filled with LL (0). P-EMPTY indicates the head pointer of the unusable part data.

[0008] In the MD, a part deleted by editing work or the like with less than 6 clusters is managed as unusable. The number of the head part data is stored here.
P-FRA indicates the head pointer of reusable free part data. That is, the leading part data number of an empty part having six or more clusters is stored here.

P-TNO (1) to P-TNO (255)
Stores the point of the head part data of each track, that is, each song, that is, the part data number. The part data 1 to 255 store the addresses on the disc of the parts constituting each piece of music. The contents are the start address, end address, and LINK-
P.

[0010] The LINK-P is called a "link pointer", and when there is the next part data in the music, the number (pointer) of the part data is stored. Conversely, if there is no next part data,
That is, in the case of the last part data, 0 is written. Each part data is P-EMPTY, P-FRA,
It is always linked to any one of P-TNO (1) to P-TNO (255).

That is, the empty part data is also P-FR
A or P-EMPTY. For raw discs, only the first part data is P-
All other parts data are P-EMPT in FRA
The head address and the end address in all the part data are 0.

Each time recording / editing is performed, this part data is consumed. On the other hand, a schematic diagram of the TOC is shown in FIG. Unlike UTOC, TOC pre-master
Need not introduce the concept that one song is composed of a plurality of parts. Therefore, P-EMPTY, P-
Both FRAs are filled with NULL like the buffer area.

Since only one part data corresponds to one track data, LINK-P always becomes 0. That is, one song = 1 part. Furthermore, since there is no need to link free part data to P-EMPTY and P-FRA, all part data after the number of recorded songs is filled with NULL.

[0014]

In [0005] M D, represented by combining the "interval" is represented by the absolute address on the disc recorded music data. It is also possible to change the combination of the sections. Therefore, the track No. May not be played in the order of the disk addresses even when playing in the order of
And the absolute time existing in the DAT cannot be obtained directly from the disc.

More specifically, since music pieces are sequentially recorded on a CD, the total playing time of all the music pieces can be easily understood by reading the TOC of the CD. For this reason, it was easy to find out the elapsed track time and how many minutes have elapsed since the first song at the point being reproduced. However, as shown in FIG. 26, in the MD, a plurality of parts may be scattered on the disk in one music, so it is difficult to directly obtain the track elapsed time only by reading the UTOC data. there were.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and has as its object to provide an optical disk apparatus capable of obtaining a track elapsed time.

[0017]

According to a first aspect of the present invention, there is provided an optical disk apparatus for reproducing an optical disk having a table of contents information indicating a storage location of digital data on the disk. A first integrating means for integrating by following the position from the beginning of the currently played music to the start point of the reproduction using the table of contents data in the table of contents information area when starting reproduction; and starting reproduction of the optical disk. A first calculating means for calculating all playing times up to immediately before the currently playing music using the table of contents data in the table of contents information area; The present invention is configured to include an integrating unit, and a second integrating unit that adds the result of the first integrating unit and the result of the first calculating unit to the integrated result.

[0018]

As described above, the optical disk apparatus according to the first aspect of the present invention uses the table of contents data in the table of contents information area from the beginning of the currently played music to the reproduction start point when starting reproduction of the optical disk. Using the first integration means for performing integration by tracing the position and the table of contents data in the table of contents information area when starting playback of the optical disc, calculate all the playing times up to the immediately preceding music to be played. A first calculating means for integrating from a reproduction start point to a reproducing point during reproduction, and adding a result of the first integrating means and a result of the first calculating means to the integrated result; With the configuration including the second integrating means, it is possible to obtain the track elapsed time of the optical disc having the index information area indicating the storage location of the digital data on the disc.

[0019]

As shown in FIG. 2, an optical disc apparatus 11 of the present invention records compressed data on an MD (mini disc) commercialized as a rewritable music disc for consumer music and reproduces the MD. It is a device to do. MD is an optical disk housed in a plastic cartridge, and is a CLV (Constant) in a spiral track from the center.
Linear Velocity) method, 1/5
A signal recorded at a compression ratio of or a signal recorded at a compression ratio of ５ is reproduced.

There are three types of MDs: a premaster for reproduction only, a recordable for reproduction and recording, and a hybrid having both characteristics. The optical disk device 11 is operated by the system oscillator 26 up to the memory unit 21.
In this configuration, data is transmitted at a rate of 1.4 Mbit / s. An optical pickup 1 serving as a detecting means for an MD 13 which is driven to rotate in a CLV manner by a spindle motor 12
4 irradiates a laser beam through an objective lens 15.

The reproduced signal read by the reflected light at this time is read from the MD 13 at the same detection rate of 1.4 Mbit / s as that of the CD, and is amplified by the RF amplifier 16 to be EFM (Eight to Fourteen Modulation).
And ACIRC (Advanced Cross Interleave Read Solom)
on Code).

A system oscillator 26 is connected to the EFM and ACIRC encoder / decoder 17. EFM and ACIRC encoder / decoder 17
Is a conversion circuit that converts a reproduction signal sent from the MD 13 into compressed digital data, performs EFM encoding and decoding, performs ACIRC encoding and decoding, performs ADIP (Address In Pregroove) decoding, performs EFM / It performs CLV control and the like by ADIP, and performs digital conversion substantially similar to that of a conventional CD device or the like.

The digital data obtained from the EFM and ACIRC encoder / decoder 17 is supplied to a vibration-proof memory controller 20. The vibration-proof memory controller 20 is connected to a memory unit 21 serving as a memory unit composed of a several-Mbit DRAM. The anti-vibration memory controller 20 becomes a memory management unit, and the EF
The digital data supplied from the M / ACIRC encoder / decoder 17 is temporarily stored in the memory unit 21, and the data stored in the memory unit 21 is output in response to a request from the audio compression encoder / decoder 22. I do.
The memory section 21 has a TOC (Tabl
e Of Contents) Data and UTOC (User'sTOC)
Data is also stored.

When the memory controller 20 outputs data for one sector, the memory controller 20 notifies the system controller 23 that data for one sector is requested. The system controller 23 reads the TOC or UTOC stored in the memory unit 21 through the vibration-proof memory controller 20, and instructs the EFM and ACIRC encoder / decoder 17 to read the next sector.

In response to this, the EFM and ACIRC encoder / decoder 17 passes the data of the next sector to the anti-vibration memory controller 20. However, when the end of the part of the MD 13 is reached, the head sector of the next part must be read by the optical pickup 14. Therefore, the system controller 23 always grasps the currently reproduced part data and checks whether or not the requested sector of the vibration-proof memory controller 20 is within the address range indicated by the part data. When the end is reached, the next part data stored in the TOC or UTOC stored in the memory unit 21 is read.

The system controller 23 comprises a microcomputer, and includes a CPU, a ROM, a RAM (not shown),
Includes I / O bus. The I / O bus is connected to the display unit 24 and the operation unit 25, as well as the EFM and ACIRC encoder / decoder 17, the anti-vibration memory controller 20, and the like. The memory controller 21 checks the read request signal for each sound group sent from the encoder / decoder 22 for audio compression to the memory controller 20 for vibration and the memory unit 21 to thereby provide the encoder / decoder for EFM and ACIRC. The read request signal for each sector, which is sent to the CPU 17, is input to the system controller 23.

The audio compression encoder / decoder 22 is a demodulation circuit including a compressed data decompression process, and decompresses 0.3 Mbit / s compressed digital data supplied from the vibration-proof memory controller 20. This is sent to the DA converter 27. As a result, audio can be output.
For recording on a recordable disc, audio is converted into digital data by an AD converter 29, compressed by an encoder / decoder 22 for audio compression, and EFM and ACI
The RC encoder / decoder 17 performs almost the same modulation method and error correction method as those of the CD, and performs the magnetic field modulation overwrite method using the recording magnetic head 19 connected to the head drive circuit 18.

As shown in FIG. 1, such an optical disk apparatus 11 starts reproduction of MD1 in an optical disk apparatus for reproducing MD1 (MD13) having a UTOC area indicating a storage location of digital data on the disk. At the time, using the UTOC data in the UTOC area, the first integrating means 2 for integrating by tracing the position from the beginning of the music currently being played to the reproduction start point, and when the reproduction of the MD1 is started, First calculating means 3 for calculating all the playing times up to immediately before the currently playing tune using the UTOC data, and during playback, integrating from a playback start point to a point being played; There is provided a second integrating means 4 for adding the result of the first integrating means 2 and the result of the first calculating means 3 to the result obtained.

The first integrating means 2, the first calculating means 3, and the second integrating means 4 are included in the system controller 23. The flowchart of the program of the system controller 23 is as shown in FIG.
Then, the program is started and the process proceeds to S1. In S1, it is determined whether or not the MD 13 has been loaded into the optical disk device 11. If it is loaded, the process proceeds to S3. If it is not loaded, the process proceeds to S2.

In S3, it is determined whether the TOC information or the UTOC information recorded on the MD 13 is stored in the memory unit 21. If it is stored, the process proceeds to S5. If it is not stored, the process proceeds to S4. In S5,
It is determined whether a key of the operation unit 25 has been input.
If so, the process proceeds to S7; otherwise, the process proceeds to S6.

In S2, a standby process is performed.
A C / UTOC reading process is performed, a status display process is performed in S6, and a key input corresponding process is performed in S7. FIG. 4 shows the waiting process in S2. In S11, it is determined whether TOC information or UTOC information remains in the memory unit 21. If there are, go to S12,
If not, the process returns to RET, that is, S1.

In S12, the TOC information or UTOC information in the memory unit 21 is deleted. As a result, in the standby processing, when the MD 13 is ejected from the device 11, the memory unit 2
No. 1 TOC information or UTOC information is deleted, and the process returns to S1. The TOC / UTOC reading process in S4 will be described with reference to FIGS. In S21 of FIG.
Is read into the memory unit 21, and
Proceed to 22.

In S22, it is determined whether or not the MD 13 has UTOC information. If there is (MD 13 is recordable or hybrid), the process proceeds to S25, and if there is no (M
(D13 is the pre-master). In S25,
UTO of MD13 (recordable or hybrid)
The C information is read, fetched into the memory unit 21, and the process proceeds to S26.

In step S26, recordable flag information is held, and the flow advances to step S27. The recordable flag information is used to decide to write UTOC information to the MD 13 when the MD 13 is ejected. In S23, T
An OC → pseudo UTOC conversion patch 15 is performed, and the process proceeds to S24. Next, the TOC information of the premaster disk is
Convert to a format conforming to the format of C information, S23
6 to 12 of the TOC → pseudo UTOC conversion patch 15 of FIG.
This will be described with reference to FIG.

In S150 shown in FIG. 6, it is determined whether or not the LAST TNO (last track number) in the TOC information stored in the memory unit 21 is 255. If not, the process proceeds to S151 and proceeds to 255. In some cases, the pseudo-edit of the pre-master disc cannot be performed, so the process returns to S1.
For example, LAST T of TOC Sector 0 in FIG.
Since NO is 0Ch, that is, the twelfth music piece, pseudo editing is possible.

In S151, P-EMPT in UTOC
The byte position B located at the address of Y is
It is recorded as MPTY, and as shown in FIG. 8, rewritten to 13 hexadecimal 0Dh, which is obtained by adding 1 to the last music number 12 (0CH), and proceeds to S152. As a result, song division (DIV
IDE), song deletion (ERASE), and the like.

That is, in order to perform the division, it is necessary to convert one part into two parts. Therefore, a pointer for managing the empty part data is required. Therefore, the empty byte position B is replaced with the P-EM
Register as PTY, and set P-EMPTY as L = LAST
By setting TNO + 1, it becomes possible to manage the part data necessary for dividing the music.

At the time of deletion, the P-TNO defined in the TOC information is changed, and the P-EM for registering part data that no longer belongs to any track is registered.
Since the PTY is required, the vacant byte position B is registered as P-EMPTY, and P-EMP
By linking the TY with the part data that no longer belongs to any track, it becomes possible to manage the part data necessary for deleting the music.

At S152, L is obtained by adding 1 to the last music number.
Is 255 or not, and if not 255, S
The process proceeds to 153, and if it is 255, the process proceeds to S24 of FIG. In S153, the pointer NO. = L is written into the byte position of LINK-P on the UTOC of the part data indicated by L, and the process proceeds to S154.

That is, the pointer No. shown in FIG. 0D
The 00h of the byte position D of the part data C indicated by h (13) is rewritten to 0Eh shown in FIG. S1
At 54, L + 1 is converted to L, and the process returns to S154. As a result, as shown in FIG. Byte position F of the part data E indicated by the pointer No. 0Eh. 00h of the byte position L of the part data K indicated by FFh is rewritten as 0Fh... 00h.

As described above, the LINK-P of the UTOC information
Can be edited by rewriting to correspond to the byte position of (COMBINE). That is, the connection between the part data and the part data
Since this is performed by the NK-P and by changing the P-TNO defined in the TOC information,
Defining INK-P as described above allows binding.

Incidentally, it is assumed that there is no recordable area since the premaster disc cannot record. For this reason, there is no need to register empty part data or the like in the P-FRA, so that it is set to (00h). It should be noted that the music order change (MOVE) is based on the P defined in the TOC information.
-It is possible only by exchanging TNO.

Therefore, the TO of the pre-master disk
By converting the C information into a format conforming to the UTOC information format, editing of division, deletion, combination, and replacement can be realized even with a premaster disk. In addition, Dis
Regarding input of c name and Track name data, TOC Sector 1, TOC Secto
When r4 is used, the way of management differs between TOC and UTOC.

Therefore, when data is input, T
The format of OC Sector1, TOC Sector4 is changed to UTOC Sector1, UTOC S
It is necessary to change to the format of ector4 format. When data input is not performed, since only the P-TNO needs to be changed as an operation associated with editing, TOC Sector 1, TOC Sector
The format of r4 need not be changed.

Disc rec date and t
im, Track rec date and ti
When the TOC Sector 2 is used for each data of “me”, the concept of P-EMPTY and LINK-P is introduced similarly to the TOC Sector 0, and
It is necessary to rewrite the data according to the TOC Sector 2 format. Or, TOC Sector
There is also a method that does not use 2.

Catalog Number, IS
RC (DIN-31-621 or ISO-3901)
When TOC Sector 3 is used for each of the data, the same as in TOC Sector 0, P
-Introduce the concept of EMPTY, LINK-P and UTOC
It is necessary to rewrite the format according to the Sector 2 format. Alternatively, there is a method that does not use TOC Sector3.

When TOC data of each option is not used, TOC Sector 0 is changed to Used Sec.
Change the tors byte data. The TOC information changed on the memory unit 21 is stored in the TOC Secto.
A pair with the catalog number of r3 is stored in a storage device inside or outside the system as another memory means, and is filed.

Next time, when this pre-master disc is loaded, the Catalog Number is checked, and if they match, whether to use the original TOC information or to use the changed TOC information for the user. Let me choose. By retrieving the changed TOC information from the storage device into the memory unit 21 again, the changed TOC information cannot be recorded on the pre-master disk, but the changed T
It is also possible to realize reproduction using OC information.

Next, in S24 of FIG. 5, the flag information of the premaster is held, and the flow advances to S27. The flag information of the pre-master indicates that when the MD 13 is ejected, the MD 1
3 is used to determine whether to write the pseudo UTOC information. As shown in FIG. 9, the acquisition of the total performance time in S27 is performed in S50 in the Fir of the UTOC information (see FIG. 10).
judge whether stTNO (first song number) is greater than 0,
If it is large, the process proceeds to S52. If it is not large, the process proceeds to S51.

At S51, a raw disk (disk on which no data is recorded), that is, the total playing time is determined to be 0 minute, and the process returns to S1. In S52, the variables Total and N are set to Tot.
Initialize as al = 0 and N = 1, and proceed to S53. S5
In 3, it is determined whether P-TNO (N) ≠ 0 in FIG. 10 and the pointer of the leading part of the Nth music is not 0, and if it is not 0, proceed to S55, and if it is 0, proceed to S54.

In S55, the address of P-TNO (N) is read, and the flow advances to S56. In S56, Total = En
d. Add-Start. Add, calculates the part length obtained by subtracting the start address from the end address, adds the part length to Total, and proceeds to S57. In S57, Link
The link pointer is read to determine whether or not P ≠ 0, and it is determined whether or not there is a subsequent part.
If there is no subsequent part, the flow proceeds to S58.

In S59, the address of the next part is read, and the flow returns to S56. In S58, N is incremented,
Move to the next song number and return to S53. In S54, the calculated Total is stored in the RAM of the system controller 23, a reproduction pointer is set at the beginning of the first song, the reproduction pointer is stored in the RAM of the system controller 23, the apparatus enters a standby state, and returns to S1.

When the user operates a predetermined key, the reproduction pointer may be reset to a predetermined music number or a point in the middle of an arbitrary music. When the reproduction is interrupted, the reproduction pointer is held at the time of the interruption. Then, key input handling process S7, as shown in FIG. 1 3, the S30, it is determined whether or not the reproduction button of the operation unit 25 is pressed, the process proceeds to S35 when pressed, when not depressed Goes to S31.

[0054] S35 in playback operation, as shown in FIG. 1 4, in S60 (first calculating means) calculates the Total up the previous song when the play button is pressed, S61
Proceed to (first integrating means). In S61, the total of the previous part in the same music piece is calculated, and the process returns to S1.

As a result, the total playing time up to the point indicated by the reproduction pointer is calculated, and the RA of the system controller 23 is calculated.
Stored in M. Also, when the play pointer changes, such as when the play button is pressed after pressing the stop button in the middle of one song, the total playing time up to the point indicated by the play pointer is calculated and output. It is possible.

Next, in S31 in FIG. 1 3, it is determined whether the recording button of the operation unit 25 is pressed, the process proceeds to S36 when pressed, the process proceeds to S32 when not pressed. S36
Then, a recording operation is performed, and the process returns to S1. Next, the state display process of S6, as shown in FIG. 1 1, in S40, it is determined whether recording is in progress in progress or reproduction process proceeds to S43 when it is being processed, when not being processed Goes to S41.

Time processing 13 in S43 (second integrating means)
As shown in FIG. 1 2, in S130, it is determined if the operation of the reproducing or recording is started, whether or not come to read requests each sound group from the encoder / decoder 22 for audio compression, a request If so, proceed to S131,
If there is no request, the process returns to S1. In S131, it is determined whether or not there is reading for each sector from the encoder / decoder 17 of EFM and ACIRC.
The process proceeds to 132, and if there is no request, the process proceeds to S135.

In S132, the UTOC is checked, and
It is determined whether or not the next sector is out of the range of the current part. If the next sector is outside the range, the process proceeds to S133.
Proceed to 35. In S133, the next part is stored in the memory unit 21.
, The address length is obtained, and the process proceeds to S134.

In S134, the address length up to the place where the performance is currently performed is calculated, and the flow advances to S135. S135
Then, the address length up to where the music is currently being played is converted to time, the time is displayed on the display unit 24, and the process returns to S1. As a result, when there is a read request signal for each sound group, the total playing time up to the present is simply added and the time is displayed. When there is a read request signal for each sector, the total playing time is recalculated based on the information of the parts currently playing.

Next, a method of displaying time in the same manner as a CD will be described with reference to FIG. First, the play button of the operation unit 25 is pressed, and in FIG.
When data is transferred to the encoder / decoder 22 for audio compression during reproduction of the data, the disk address can be fetched into the RAM of the system controller 23, and the absolute address of the point P on the MD 13 can be obtained.

First, in order to display the track elapsed time, first, the sum of the lengths of the sections before the current section included in the current track n and the sum of the lengths of the sections A and B are obtained. This method is calculated by checking the lengths of the sections A and B from the UTOC information when starting a new reproduction. In updating data during reproduction, reproduction is performed until the end of the section, and when LINK-P ≠ 0, the length of the section is added. When LINK-P = 0, a new track is reproduced thereafter.
It is newly obtained from the OC information.

Next, the start address of the current section C is obtained. This address is set to UTO when newly starting playback.
From the C information, the start address of the section C including the point P where the reproduction is started is obtained. During the data update during reproduction, reproduction is performed until the end of the section, and when LINK-P ≠ 0, the next section to be reproduced is obtained from the UTOC information, and the start address is obtained. When LINK-P = 0, a new track is reproduced thereafter, and a new track is obtained from the UTOC information.

Next, the start address of the current section C is subtracted from the absolute address of the point P. This difference is calculated in section A,
The track progress address is obtained by adding the sum of the lengths of B. By converting this address into time, the track elapsed time can be displayed.

Second, to display the remaining track time, first, the length of the current track n is obtained. This method
When newly starting reproduction or starting reproduction of a new track, a section included in the track is obtained from the UTOC information, and the sum of the lengths of the sections is obtained. Next, the track remaining address is obtained by subtracting the track elapsed address from the length of the current track n, and the track remaining address can be displayed.

Third, in order to display the elapsed time of the disk, the sum of the track lengths before the current track n and the length from the track number 1 to the track number n-1 are obtained. In this method, when a new reproduction is started or when a new track is started to be reproduced, the sum of the track lengths is obtained from the UTOC information. By calculating the sum of the track length and the track elapsed address, the disk elapsed address is determined, and the disk elapsed time can be displayed.

Fourth, in order to display the remaining disk time, the sum of the lengths of all the tracks recorded on the disk is obtained from S54 in FIG. 9, and the elapsed disk address is subtracted from this sum. The remaining disk address is determined, and the remaining disk time can be displayed. Therefore, even when reproducing the MD 13 which is not reproduced in the order of the absolute address such as a CD, the time can be displayed like a CD.

Next, in S32 in FIG. 1 3, the editing system button of the operation unit 25 determines whether button AB memory is pressed, the process proceeds to S37 when pressed, to S33 if not pressed move on. In the editing operation of S37, as shown in FIG. 16, in S70, it is determined whether or not the editing is a deletion. If the editing is a deletion, the process proceeds to S73, and if not, the process proceeds to S71.

The deletion process in S73 will be described with reference to FIGS. In S90 of FIG. 18, FIG.
Check and complement of the A point and the B point stored in the memo point operation 5 are performed, and the process proceeds to S91. Specifically, it is checked whether the point A is before the point B because of the time. If the point is behind, the point A is converted to be before the point B.

If only the A point is designated and there is no B point, the function is such that the B point is automatically set to the end address of the music or the start address of the next music. When only the B point is specified and there is no A point, the function is such that the A point is automatically set to the head address of the music.

In this embodiment, as shown in FIG. 17 (A), a case will be described in which the A point is specified in the third music piece and the B point is specified in the sixth music piece. Next, S91 of FIG.
Now, the music division 11 at the B point shown in FIG.
Is performed, and the music number after B is moved up. For details, see FIG.
As shown in FIG.
In S110, it is determined whether or not there is an empty parts area in the UTOC.

When there are no empty parts areas and when all 255 parts are used, the process after S112 cannot be performed, and the process proceeds to S111. S11
In step 1, an error is displayed on the display unit 24, and the process returns to S1. If there is an empty parts area, the process proceeds to S112.
In S112, the pointer data after the designated music number is shifted one by one. That is, in FIG. 17A, since the sixth tune is designated, the seventh and subsequent tune numbers are moved up as shown in FIG. 17B, an empty number and a seventh number are secured, and the process proceeds to S113.

In S113, the head part data of the designated music piece is read, that is, the head part data of the sixth music piece is read, and the flow advances to S114. S114
Then, it is determined whether or not an address designated to be divided is included between the start address and the end address of the read part data. If the address is included, the process proceeds to S116. , S115.

In S115, the next part data of the specified sixth music piece is read, and the flow advances to S114. S
In step 116, the part data end address is designated B
Rewrite to the point address, rewrite the link pointer to 0, and proceed to S117. In S117, after the point B, the part data newly divided, that is, the part data with the start address following the address of the B point is created, and the process proceeds to S118.

In S118, the created part data is
Rewrite the song number and proceed to S92. In S92, the music division 11a is performed at the A point shown in FIG. 17C, and the music numbers after A are moved up. More specifically, as shown in FIG. 20, the music division 11a at the point A in S92
Determines whether there is an empty parts area in the UTOC in S110a.

If there is no empty parts area and if all 255 parts are used, the process proceeds to S111a. In S111a, an error is displayed on the display unit 24, and the process returns to S1. If there is an empty parts area, S1
Proceed to 12a. In S112a, the pointer data after the designated music number is shifted one by one. That is, in FIG. 17 (A), the third tune is specified, so the fourth and subsequent tune numbers are moved up to 5, 6, 7,... As shown in FIG. And the process proceeds to S113a.

At S113a, the leading part data of the third tune is read, and the routine proceeds to S114a. S11
In 4a, it is determined whether or not the address of A designated to be divided is included between the start address and the end address of the read part data.
The process proceeds to 6a, and if not included, proceeds to S115a.

At S115a, the next part data of the designated third tune is read, and the process returns to S114a. In S116a, the end address of the part data is set to A
Rewrite to the address immediately before the address, rewrite the link pointer to 0, and proceed to S117a. In S117a,
The part data with the address of the point A as the head address is created, and the process proceeds to S118a.

In S118a, the created parts data is rewritten to the fourth music number, and the flow advances to S93 in FIG. S9
At 3, it is determined whether or not the music number including the address of the point A and the music number including the address of the point B are the same. If they are the same, the process proceeds to S95, and if not, the process proceeds to S94.

In S94, FIGS. 17D and 17E, FIG.
As shown in FIG. 1, the song following A is connected to A. Specifically, in S120 of FIG. 21, the link pointer of the leading part of the designated music piece A is read, and the process proceeds to S121.

In S121, it is determined whether or not the read link pointer is 0, which indicates the last part. If it is 0, the process proceeds to S123, and if it is not 0, the process proceeds to S122. In S122, the link pointer of the next part is read, and the process returns to S121. In S123, the link pointer of the last part of the designated music piece A is rewritten so as to correspond to the head part of the next music piece (fifth music piece), and the process proceeds to S124.

In S124, the song numbers of the next and subsequent songs (sixth and subsequent songs) following the designated one are moved down to 5, 6, 7,..., And the process returns to S93 in FIG. As a result, the track number of B is 1
Decrease. Then, as shown in FIG. 17 (E), when A becomes the head address of the fourth music piece and B becomes the last address of the fourth music piece, and the music piece number of A matches the music piece number of B, the process proceeds to S95.

In S95, FIGS. 17 (F), (G), and FIG.
As shown in FIG. 2, the fourth song is deleted. Specifically, FIG.
In S140 of No. 2, the head address of the designated music number (4) is read, and the process proceeds to S141. In S141, the link pointer of the leading part is read for the first time, and the process proceeds to S142.

In S142, it is determined whether or not the length of the part is equal to or more than 6 clusters.
The process proceeds to step S4, and if less than six clusters, the process proceeds to S143. S
In 144, the link pointer is rewritten so that the leading pointer in the parts of six or more clusters can be added to or added to the P-FRA sequence, and the process proceeds to S145.

In S143, the link pointer is rewritten so that the head pointer in the parts of less than 6 classes can be added to or added to the P-EMPTY sequence.
Proceed to. In S145, it is determined whether the link pointer of the part to be deleted is 0 or not.
If not, the process returns to S141. As a result, as shown in FIG. 17F, the head pointer of each part in the fourth tune is assigned to the P-FRA sequence or the P-EMPTY sequence until the link pointer becomes 0, and the fourth tune is deleted.

In S146, as shown in FIG. 17 (G), the music number (5) following the specified music number (4) is changed to 4, 5,.
.. And then proceed to S147. In S147, the last music number is rewritten, for example, from 7 to 5, and the process returns to S1. If only the A point is designated and there is no B point, the B point is automatically set to the end address of the music or the start address of the next music. Pressing the delete key of the operation unit 25 without specifying the point and specifying the B point is convenient for the operation of removing the silent part after the music ends.

When only the B point is designated and there is no A point, the B point is designated at the beginning address of the music in order to automatically set the A point to the beginning address of the music. Pressing the delete key without specifying the A point is convenient for removing silence parts before the start of the music. Further, section A-
This is convenient when performing reproduction or the like except for AB without deleting B.

Next, in S71 of FIG. 16, it is determined whether or not the editing operation is insertion. If it is insertion, the insertion process 10 of S74 is performed, and if not, other processes of S72 are performed. As shown in FIG. 23, in the insertion process 10 of S74, the point A and the point B
The points are checked and complemented, and the process proceeds to S101.

In S101, for example, as shown in FIG. 24, when the section AB is to be inserted at the point C, it is determined whether or not the insertion destination music number C is outside the range between the A point and the B point. If it is outside, the process proceeds to S103, and if it is not outside, the process proceeds to S102. In S102, the display unit 24
Is displayed to return to S1. In S103, S
Similarly to 91, the H music is divided into H1 music and H2 music at the B point, and the process proceeds to S104.

In S104, similarly to S92, the F music is divided into F1 music and F2 music at the A point, and the flow advances to S105.
In S105, as in S94, the F2 tune, the G tune, and the H1 tune are combined, and this combination is inserted into the D1 tune and the D1 tune separated from the D1 tune and the D2 tune at the C point, and the process returns to S1.

Next, in S33 of FIG. 13, it is determined whether or not a memo point system button of the operation unit 25 has been pressed. If the button has been pressed, the process proceeds to S38, and if not, the process proceeds to S34. In S34, a process corresponding to the other buttons of the operation unit 25 is performed, and the process returns to S1. As shown in FIG. 25, in the memo point operation of S38, it is determined in S81 whether the A key of the operation unit 25 has been pressed.
The process proceeds to S2, and if not pressed, proceeds to S81.

In S82, the current pointer is stored in the A key as the A point, and the process returns to S1. In S81, it is determined whether or not the B key of the operation unit 25 has been pressed. If the B key has been pressed, the process proceeds to S84, and if not, the process returns to S1. S8
At 4, the current pointer is stored in the B key as the B point, and the process returns to S1.

The A key of the operation unit 25 is obtained by diverting a memory key used when performing from a designated point, and the B key is used when stopping at a designated point. The memory key was diverted. Then, in S41 in FIG. 1 1, it is determined whether editing, the process proceeds to S44 when being edited, the process proceeds to S42 when not editing.

In S44, the editing display is performed on the display unit 24, and the process returns to S1. In S42, the standby display is performed on the display unit 24, and the process returns to S1. As described above, in the time display described above, the total playing time up to the immediately preceding music number is recalculated every time the music number changes, but 255 areas are provided in the RAM in the system controller 23, and when the disk is inserted, Alternatively, the system may calculate the playing time of each song and store the calculated playing time.

By doing so, the playing time for each music piece can be uniquely identified, so that recalculation becomes easier.

[0095]

As described above, according to the first aspect of the present invention,
When the reproduction of the optical disk is started, a first integrating means for integrating by following the position from the beginning of the currently playing music to the reproduction start point using the index data in the index information area; At the start, first calculating means for calculating all playing times up to one immediately before the currently played music using the table of contents data in the table of contents information area, and during playback, starting from the starting point of the playback. Integrating up to the point, and adding the result of the first integrating means and the result of the first calculating means to the integrated result. The track elapsed time of the optical disc having the table of contents information area indicating the storage location of the track can be obtained.

[Brief description of the drawings]

FIG. 1 is a flowchart of one embodiment of the present invention.

FIG. 2 is a block diagram showing an MD device of the present invention.

FIG. 3 is a flowchart of one embodiment of the present invention.

FIG. 4 is a flowchart of one embodiment of the present invention.

FIG. 5 is a flowchart of one embodiment of the present invention.

FIG. 6 is a flowchart of one embodiment of the present invention.

FIG. 7: TOC of a premaster disc containing 12 songs
It is a figure showing before Sector0 change.

FIG. 8: TOC of a premaster disc containing 12 songs
It is a figure which shows after Sector0 is changed.

FIG. 9 is a flowchart of one embodiment of the present invention.

FIG. 10 is a diagram showing UTOC information.

FIG. 11 is a flowchart of one embodiment of the present invention.

FIG. 12 is a flowchart of one embodiment of the present invention.

FIG. 13 is a flowchart of one embodiment of the present invention.

FIG. 14 is a flowchart of one embodiment of the present invention.

FIG. 15 is a diagram for explaining time display.

FIG. 16 is a flowchart of one embodiment of the present invention.

FIG. 17 is a diagram for explaining deletion editing.

FIG. 18 is a flowchart of one embodiment of the present invention.

FIG. 19 is a flowchart of one embodiment of the present invention.

FIG. 20 is a flowchart of one embodiment of the present invention.

FIG. 21 is a flowchart of one embodiment of the present invention.

FIG. 22 is a flowchart of one embodiment of the present invention.

FIG. 23 is a flowchart of one embodiment of the present invention.

FIG. 24 is a diagram for explaining insertion editing.

FIG. 25 is a flowchart of an embodiment of the present invention.

FIG. 26 is a conceptual diagram of an MD.

FIG. 27 is a diagram showing TOC information.

[Explanation of symbols]

 Reference Signs List 1 MD 2 First integrating means 3 First calculating means 4 Second integrating means 11 Optical disk device 13 MD 14 Optical pickup 17 EFM and ACIRC encoder / decoder 20 Vibration resistant memory controller 21 Memory unit 22 Encoder / decoder for audio compression

Claims (1)

(57) [Claims] 1. An optical disk apparatus for reproducing an optical disk having a table of contents information indicating a storage location of digital data on a disk, wherein when starting reproduction of the optical disk, the current performance is performed using the contents of table of contents in the table of contents information. A first integrating means for performing integration by tracing a position from the beginning of the song to be reproduced to a start point of reproduction; and one of the songs currently being played using the table of contents data in the table of contents information area when reproduction of the optical disk is started. A first calculating means for calculating all playing times up to the previous time; and a playback start point to a playing point during playback, and a result of the first integrating means; An optical disc device comprising: a second integrating means for adding a result of the first calculating means.