JPH08138352A - Optical disc device - Google Patents

Abstract

PURPOSE: To obtain an optical disc device in which the type of a disc is determined and a decision is made whether the disc is recordable and a TOC data, stored in a memory, is edited and used skeptically when the disc is not recordable depending on the type of the disc to reproduce an MD. CONSTITUTION: In the optical disc 11, TOC data in a TOC area of an MD 13 representative of the location for storing a digital data is entirely stored in a memory section 21 and an optical pickup 14 determines the type of a disc and makes a decision whether the disc is recordable. A system controller(SC) 23 controls each section to edit the TOC data depending on the type being determined and reproduces an MD 13 using the edited TOC data to deliver a voice to a D/A converter 27. When the MD 13 can not be edited, the SC 23 edits the TOC data skeptically to reproduces the MD 13 using the edited TOC data and delivers an edited TOC data to an external memory. Consequently, edition work can be carried out even for an MD on which a new data can not be recorded and extension can be attained using an external memory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a TOC (Table Of Contents) indicating a storage location of digital data on a disc.
) Relates to an optical disc device for reproducing an optical disc having a region.

[0002]

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

There are three types of MDs, a premaster dedicated for reproduction, a recordable recordable and recordable hybrid, and a hybrid having both characteristics. FIG. 26 shows a conceptual diagram of MD. The pre-master disc has a TO
The recordable disc and the hybrid disc have a C area and a TOC area and a UTOC (User's TOC) area.

The MD expresses each track by assigning a "section (part)" to each track (song). In some cases, a plurality of parts may be assigned, as in the m-th song in the figure. As shown in the figure, the recordable disc has a UTOC area in the recordable area, so its editing can be performed by changing the allocation of parts or dividing this section and changing the allocation. Be seen.

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 and LINK-P of the part in the TOC / UTOC, and is actually called "Part-Descriptor" in the TOC and "Area-Descriptor" in the UTOC. Called.

FIG. 10 shows a schematic diagram of the UTOC. Various information including flag information indicating whether this is a TOC or a UTOC is stored in the header part.
First TNO indicates the first song number. When it is 0, it is a raw disc, and when it is 1, it is at least 1
Indicates that the song is recorded. In the case of a hybrid, this may not be 1.

Last TNO indicates the last song number.
When this is 0, it is a raw disc, and when 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 / playback failure, etc.
It is filled with LL (0). P-EMPTY indicates a leading pointer of unusable part data.

In the MD, if the number of parts deleted by editing work is less than 6 clusters, it is managed as unusable. The number of the leading part data is stored here.
P-FRA indicates a leading pointer of reusable empty part data. That is, the leading part data number of an empty part having 6 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. In the parts data 1 to 255, the addresses on the disk of the parts that make up each song are stored. The contents are the start address, end address, and LINK-
P.

The LINK-P is called a "link pointer", and if there is part data that follows next in the music, the number (pointer) of the part data is stored. On the contrary, if there is no next part data,
That is, 0 is written in the case of the final part data. 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.
It is linked to either A or P-EMPTY. For raw discs, only the first part data is P-
All other parts data in FRA and P-EMPT
It is linked to Y, and the start address and end address in all part data are both 0.

This part data is consumed each time recording / editing is performed. On the other hand, a schematic diagram of TOC is shown in FIG. Unlike UTOC, TOC based on premaster
Does not need to introduce the concept that a song consists of multiple parts. Therefore, P-EMPTY, P-
Both the FRA and the buffer area are filled with NULL.

Since only one part data corresponds to one track data, LINK-P is always 0. In other words, 1 song = 1 part. Furthermore, since it is not necessary for empty part data to be linked to P-EMPTY and P-FRA, all part data after the number of recorded songs is filled with NULL.

[0014]

However, in an optical disc device such as a MD reproducing device, the premaster disc is a read-only disc like a CD and cannot be newly recorded. When playing back, it was something that could not be edited.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide an optical disc apparatus capable of performing an editing operation even on an optical disc that cannot be newly recorded.

[0016]

In order to solve the above problems, according to the invention of claim 1, in an optical disk device for reproducing an optical disk having a TOC area indicating a storage location of digital data on the disk, the TOC of the optical disk is provided.
Memory means for storing all the TOC data in the area; disc type detecting means for detecting whether or not the optical disc is recordable; editing means for editing the TOC data in response to the detection of the disc type detecting means; A reproducing means for reproducing the edited TOC data based on the edited TOC data.

Further, the invention of claim 2 further comprises an output means for outputting the edited TOC data to another memory means.

[0018]

As described above, the optical disk device according to the first aspect of the present invention includes the editing means for editing the TOC data stored in the memory means in response to the detection of the disk type detecting means.
Since the reproduction device has a reproducing means for reproducing the TOC data based on the edited TOC data, it is normally impossible to edit the TOC data when the optical disc cannot be recorded. The TOC data can be edited, and the reproduction can be performed based on the edited TOC data.

Further, since the optical disk device according to the invention of claim 2 further comprises an output means for outputting the edited TOC data to another memory means, the edited TOC data is stored in another memory. It becomes possible to expand by storing in the means and filing.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, an optical disk device 11 of the present invention records compressed data on an MD (mini disk) manufactured as a rewritable music disk for consumer music and reproduces the MD. It is a device that does. MD is an optical disc housed in a plastic cartridge, and has a CLV (Constant Linear) in a spiral track from the center.
Velocity) recording at 1/5 compression rate or 1 /
A signal recorded with a compression rate of 5 is reproduced.

There are three types of MDs: a premaster dedicated to reproduction, a recordable recordable and recordable hybrid, and a hybrid having both characteristics. The optical disk device 11 uses the system oscillator 26 to the memory unit 21,
The data is transmitted at a rate of 1.4 Mbit / s. An optical pickup 1 serving as detection means for the MD 13 which is rotationally driven by the spindle motor 12 in the CLV method.
A laser beam is emitted from the lens 4 through the objective lens 15.

The reproduced signal read by the reflected light at this time is read by the MD 13 at the same detection rate of 1.4 Mbit / s as 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) encoder / decoder 17.

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

The digital data obtained from the EFM / ACIRC encoder / decoder 17 is supplied to the vibration-proof memory controller 20. The anti-vibration memory controller 20 is connected to a memory unit 21 which is a memory means composed of a DRAM of several M bits. The vibration-proof memory controller 20 serves as a memory management unit, and
Digital data supplied from the M / A CIRC 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. To do.
In addition, the memory unit 21 has a TOC (Tabl
e Of Contents) data and UTOC (User'sTOC)
Data is also stored.

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

In response to this, the EFM / 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 part data currently being reproduced and checks whether or not the requested sector of the vibration-proof memory controller 20 is within the range of the address 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 is composed of a microcomputer, and has a CPU, ROM, RAM,
Includes I / O bus. The I / O bus is connected to a display unit 24, an operation unit 25, an EFM / ACIRC encoder / decoder 17, a vibration-proof memory controller 20, and the like. By checking the read request signal for each sound group sent from the anti-vibration memory controller 20 to the anti-vibration memory controller 20 from the audio compression encoder / decoder 22 and the memory unit 21, the encoder / decoder of the EFM and ACIRC. The read request signal for each sector sent to 17 is input to the system controller 23.

The audio compression encoder / decoder 22 is a demodulation circuit including compression data expansion processing, and expands 0.3 Mbit / s compressed digital data supplied from the anti-vibration memory controller 20. This is sent to the DA converter 27. As a result, voice can be output.
For recording on a recordable disc, voice is converted into digital data by the A / D converter 29, compressed by the encoder / decoder 22 for voice compression, and EFM and ACI are recorded.
The RC encoder / decoder 17 performs almost the same modulation method and error correction method as the CD, and the magnetic field modulation overwrite method that also uses the recording magnetic head 19 connected to the head drive circuit 18.

As shown in FIG. 1, such an optical disk device 11 reproduces an MD1 (MD13 described above) having a TOC area indicating a storage location of digital data on the disk, and the TOC in the TOC area of the MD1. Memory means 2 for storing all data (the memory unit 21)
A disc type detecting means 3 (the optical pickup 14) for detecting whether or not the MD 1 is recordable, an editing means 4 for editing the TOC data according to the detection of the disc type detecting means 3, and the edited type. The reproducing means 5 (the above-mentioned DA converter 2) for reproducing based on the TOC data.
7) and output means 6 for outputting the edited TOC data to another memory means.

The editing means 4 is included in the system controller 23. As shown in FIG. 3, the flowchart of the program of the system controller 23 starts the program at S (step) 0 and proceeds to S1. In S1, it is determined whether the MD 13 is loaded in the optical disc device 11. When it is loaded, the process proceeds to S3, and when it is not loaded, the process proceeds to S2.

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

In S2, standby processing is performed, and in S4, TO
A C / UTOC reading process is performed, a state display process is performed in S6, and a key input handling process is performed in S7. The standby process of S2 is shown in FIG. In S11, it is determined whether or not TOC information or UTOC information remains in the memory unit 21. If there are any, go to S12,
When there is no remaining, it returns to RET, that is, S1.

At S12, the TOC information or the UTOC information in the memory section 21 is erased. As a result, in the standby process, when the MD 13 is ejected from the device 11, the memory unit 2
The TOC information or UTOC information of No. 1 is erased, and the process returns to S1. The TOC / UTOC reading process of S4 will be described with reference to FIGS. In S21 of FIG. 5, MD13
The TOC information of the
Proceed to 22.

In S22, it is determined whether or not the MD 13 has UTOC information. If there is (MD13 is recordable or hybrid), proceed to S25, and if not (M
If D13 is a premaster, the process proceeds to S23 (the editing unit 4). In S25, the UTOC information of the MD 13 (recordable or hybrid) is read and loaded into the memory unit 21, and the process proceeds to S26.

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

In S150 shown in FIG. 6, it is determined whether or not the LAST TNO (last song number) in the TOC information stored in the memory unit 21 is 255, and if it is not 255, the process proceeds to S151 and 255. At some time, since the pre-master disk cannot be pseudo-edited, the process returns to S1.
For example, LAST T of TOC Sector 0 in FIG.
Since NO is 0Ch, that is, the 12th song, pseudo editing is possible.

In S151, the P-EMPT at UTOC is performed.
Byte position B located at the Y address is changed to PE
It is recorded as MPTY, and as shown in FIG. 8, it is rewritten to the hexadecimal number 0Dh of 13 by adding 1 to the last music number 12 (0CH), and the process proceeds to S152. As a result, song division (DIV
Editing such as IDE) and deletion of songs (ERASE) becomes possible.

That is, in order to divide, it is necessary to work one part into two parts. Therefore, a pointer for managing the empty part data is necessary. Then, set the empty bite position B to P-EM.
Register as PTY, P-EMPTY, L = LAST
By setting TNO + 1, it becomes possible to manage the parts data necessary for dividing the music.

In addition, at the time of deletion, the P-EM for changing the P-TNO defined in the TOC information and for registering the part data no longer belonging to any track.
Since PTY is required, the empty byte position B is registered as P-EMPTY, and P-EMP is registered.
By linking the TY with the part data that does not belong to any track, it is possible to manage the part data necessary for deleting the song.

At S152, L is obtained by adding 1 to the last song number.
Is 255, and if it is not 255, S
When it is 255, the process proceeds to S24 in FIG. In S153, the pointer NO. = L, the numerical value of L + 1 is written in the byte position of LINK-P on the UTOC of the part data, 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 part data E indicated by 0Eh ... Pointer No. 00h of the byte position L of the part data K indicated by FFh is rewritten as 0Fh ... 00h.

In this way, the LINK-P of the UTOC information is
By rewriting so as to correspond to the byte position of, it becomes possible to edit the combination (COMBINE). That is, the combination of the part data and the part data is LI
This is done by NK-P and by changing P-TNO defined in the TOC information.
By defining INK-P as described above, binding becomes possible.

By the way, since the pre-master disc cannot record, it is assumed that there is no recordable area. For this reason, it is not necessary to register empty part data and the like in the P-FRA, so leave it as it is (00h). Note that the order of songs (MOVE) is defined in TOC information.
-It is possible only by replacing TNO.

Therefore, the TO of the premaster disc
By converting the C information into that conforming to the UTOC information format, it is possible to realize the editing of division, deletion, combination, and replacement even in the premaster disc. In addition, Dis
About the input of the data of c name, Track name, TOC Sector1, TOC Secto
When r4 is used, the management is different between TOC and UTOC.

Therefore, when inputting data, T
The formats of OC Sector 1 and TOC Sector 4 are the same as those of UTOC Sector 1 and UTOC S
It is necessary to change to the format of the vector of actor4. When data is not input, only the P-TNO needs to be changed as an operation associated with editing. Therefore, TOC Sector 1, TOC Secto
The format of r4 does not have to be changed.

Disc rec date and t
image, Track rec date and ti
For each data of me, when the TOC Sector 2 is used, the concept of P-EMPTY and LINK-P is introduced as in the case of the TOC Sector 0.
It is necessary to rewrite the file according to the TOC Sector 2 format. Or TOC Sector
There is also a method not using 2.

Catalogue Number, IS
RC (DIN-31-621 or ISO-3901)
When the TOC Sector 3 is used for each data of P, as in the case of TOC Sector 0,
-Introduced the concepts of EMPTY and LINK-P,
It is necessary to rewrite it according to the format of Sector2. Alternatively, there is a method that does not use TOC Sector 3.

When the TOC data of each option is not used, the TOC Sector 0 is set to Used Sec.
Change the bytes data of tors. In addition, the TOC information changed on the memory unit 21
The r3 paired with the Catalog Number is stored in a storage device inside or outside the system, which serves as another memory means, and filing is performed.

Next time, when this pre-master disc is loaded, the Catalog Number is checked, and if they match, the original TOC information is used by the user or the changed TOC information is used. Let me choose. Once again, the changed TOC information is fetched from the storage device into the memory unit 21, so that it cannot be recorded on the pre-master disc, but the changed T
It is also possible to realize reproduction using OC information.

Next, in S24 of FIG. 5, the premaster flag information is held, and the process proceeds to S27. This pre-master flag information is used for MD1 when MD13 is ejected.
It is used to make a decision not to write the pseudo UTOC information in 3. As shown in FIG. 9, the acquisition of the total playing time in S27 is performed in S50 by the FIR of the UTOC information (see FIG. 10).
Determine whether stTNO (first song number) is greater than 0,
When it is large, the process proceeds to S52, and when it is not large, the process proceeds to S51.

In S51, it is determined that the raw disc (disc not recorded), that is, the total performance time is 0 minutes, and the process returns to S1. In S52, variables Total and N are changed to Tot.
Initialization is performed with al = 0 and N = 1, and the process proceeds to S53. S5
3, it is determined whether P-TNO (N) ≠ 0 in FIG. 10 and the pointer of the leading part of the N-th music is not 0. If not 0, the process proceeds to S55, and if 0, the process proceeds to S54.

At S55, the address of P-TNO (N) is read, and the routine proceeds to S56. In S56, Total = En
d. Add-Start. The part length obtained by subtracting the start address from the Add and end addresses is calculated, the part length is added to Total, and the process proceeds to S57. In S57, Link
Whether or not P ≠ 0, the link pointer is read, the presence or absence of the following part is determined, and if there is the following part, S59
If there are no subsequent parts, proceed to S58.

In S59, the address of the next part is read, and the process 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, the reproduction pointer is set to the beginning of the first music piece, the reproduction pointer is stored in the RAM of the system controller 23, the standby state is set, and the process returns to S1.

The reproduction pointer may be reset to a predetermined music number or a point in the middle of an arbitrary music by the user operating a predetermined key. When the reproduction is interrupted, the reproduction pointer is held at the time of the interruption. Next, in the key input handling process of S7, as shown in FIG. 11, in S30, it is determined whether or not the reproduction button of the operation unit 25 is pressed, and when it is pressed, the process proceeds to S35, and when it is not pressed, Proceed to S31.

In the reproducing operation of S35, as shown in FIG. 12, in S60, when the reproduction button is pressed, the Total up to the previous tune is calculated, and the process proceeds to S61. In S61, the total of the parts up to the previous one in the same song is calculated, and the process returns to S1. As a result, the total playing time up to the point indicated by the playback pointer is calculated and stored in the RAM of the system controller 23.

Even when the play pointer is changed after pressing the stop button in the middle of one song, such as when the play button is pressed, the total playing time up to the point indicated by the play pointer is calculated. Output is possible. Next, S in FIG.
At 31, it is determined whether or not the record button of the operation unit 25 has been pressed. If so, the process proceeds to S36, and if not, the process proceeds to S32. In S36, the recording operation is performed, and the process returns to S1.

Next, as shown in FIG. 13, in the state display process of S6, it is determined in S40 whether the recording process or the reproducing process is in progress. If not, the process proceeds to S41. As shown in FIG. 14, in the time process 13 of S43, in S130, when the reproduction or recording operation is started, it is determined whether or not there is a read request from the sound compression encoder / decoder 22 for each sound group. When there is a request, the process proceeds to S131, and when there is no request, the process returns to S1.

In S131, it is determined whether or not there is a read for each sector from the EFM / ACIRC encoder / decoder 17, and if there is a request, the process proceeds to S132, and if there is no request, the process proceeds to S135. In S132, UTO
C is checked to determine whether or not the next sector is out of the range of the current part. If it is out of the range, the process proceeds to S133, and if it is not out of the range, the process proceeds to S135.

In S133, the next part is loaded into the memory unit 21.
Is read, the address length is acquired, and the process proceeds to S134.
In S134, the address length up to where the player is currently playing is calculated, and the flow advances to S135. In S135, the address length up to the current performance is converted into 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 on the parts currently playing. Next, a method of displaying time similar to that of a CD will be described with reference to FIG.

First, the play button of the operation unit 25 is pressed,
In FIG. 15, when the point P of the song number n is being reproduced,
When data is transferred to the audio compression encoder / decoder 22, the disk address is assigned to the system controller 2
It is possible to take in the RAM of No. 3 and obtain the absolute address on the MD 13 of the point P. First, in order to display the track elapsed time, first, the sum of the lengths of the sections before the current section and the sum of the lengths of the sections A and B included in the current track n are obtained.

This method of calculation is calculated by checking the lengths of the sections A and B from the UTOC information when a new reproduction is started. For data update 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, and a new one is obtained from the UTOC information.

Next, the start address of the current section C is obtained. This address will be
The start address of the section C including the point P for starting the reproduction is obtained from the C information. In updating the data during reproduction, reproduction is performed until the end of the section. When LINK-P ≠ 0, the section to be reproduced next 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 one is obtained from the UTOC information.

Then, the start address of the current section C is subtracted from the absolute address of the point P. This difference is referred to as section A,
The track elapsed address is obtained by adding it to the sum of the lengths of B. By converting this address into time, the track elapsed time can be displayed.

Secondly, in order to display the track remaining time, first, the length of the current track n is obtained. This method
When a new reproduction is started, or when a new track is reproduced, 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.

Thirdly, in order to display the disc elapsed time, the sum of the lengths of the tracks before the current track n and the lengths from the music number 1 to the music number n-1 are obtained. This method obtains the sum of the track lengths from the UTOC information when a new reproduction is started or when a new track is started to be reproduced. By obtaining the sum of the track length and the track elapsed address, the disc elapsed address can be obtained and the disc elapsed time can be displayed.

Fourth, in order to display the disc remaining time, the sum of the lengths of all tracks recorded on the disc is obtained from S54 of FIG. 9, and the disc elapsed address is subtracted from this sum. The disc remaining address is calculated, and the disc remaining time can be displayed. Therefore, even when the MD 13 that is not played back in the order of the absolute address is played back like the CD, the time can be displayed like the CD.

Next, in S32 of FIG. 11, it is determined whether or not the editing-related button of the operation unit 25 or the AB memory button is pressed. If so, the process proceeds to S37, and if not, the process proceeds to S33. move on. In the editing operation of S37, as shown in FIG. 16, in S70, it is determined whether or not the editing is deletion. If the editing is deletion, the process proceeds to S73. If not, the process proceeds to S71.

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

When 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. When only the B point is designated and there is no A point, the A point is automatically set to the start address of the music.

In the present embodiment, as shown in FIG. 17A, a case will be described in which point A is designated for the third piece and point B is designated for the sixth piece. Next, in S91 of FIG.
Then, as shown in FIG. 17B, the song is divided at the B point 11
And perform the song numbers after B. For details, see FIG.
As shown in, the division 1 of the song at the B point of S91
1 determines in S110 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, so the process proceeds to S111. S11
In No. 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. 17 (A), since the sixth music is designated, the seventh and subsequent music numbers are moved up as shown in FIG. 17 (B) to secure an empty number, No. 7, and the process proceeds to S113.

At S113, the head part data of the designated music is read, that is, the head part data of the sixth music is read, and the routine proceeds to S114. S114
Then, it is determined whether or not the address designated for division is included between the start address and the end address of the read part data. If it is included, the process proceeds to S116, and if it is not included, , S115.

In S115, the next part data of the designated sixth music is read, and the process proceeds to S114. S
At 116, B with the part data end address specified
The address of the point is rewritten, the link pointer is rewritten to 0, and the process proceeds to S117. In S117, the part data newly generated after the B point, that is, the part data having the head address next to the address of the B point is created, and the process proceeds to S118.

In S118, the created part data is set to 7
It is rewritten to the second music number and the process proceeds to S92. In S92, music division 11a is performed at point A shown in FIG. 17C, and music numbers after A are advanced. For details, as shown in FIG. 20, the song division 11a at the point A in S92.
Determines in S110a whether or not there is an empty parts area in the UTOC.

When there is no empty parts area and when 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), since the third music is specified, the fourth and subsequent music numbers are moved up to 5, 6, 7, ... As shown in FIG. Is secured and the process proceeds to S113a.

At S113a, the first part data of the third song is read, and the process proceeds to S114a. S11
In 4a, it is judged 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.
6a, and if not included, proceed to S115a.

In S115a, the next part data of the designated third song is read, and the process returns to S114a. In S116a, the end address of the part data is set to A
The address immediately before the address is rewritten, the link pointer is rewritten to 0, and the process proceeds to S117a. In S117a,
Part data is created with the address of the A point as the start address, and the process proceeds to S118a.

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

In S94, the steps shown in FIGS.
Join the next song of A to A, as shown in 1. Specifically, in S120 of FIG. 21, the link pointer of the leading part of the designated song A is read, and the process proceeds to S121. S12
At 1, it is determined whether or not the read link pointer is 0, which indicates the final 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 song A is rewritten so as to correspond to the beginning part of the next song (fifth song), and S124
Proceed to. In S124, the song numbers of the designated next and subsequent songs (sixth and subsequent songs) are moved down to 5, 6, 7, ...
It returns to S93 of FIG. As a result, the music number of B is reduced by one.

Then, as shown in FIG. 17E, if A is the start address of the fourth music and B is the last address of the fourth music, and the music number of A matches the music number of B, S95
Proceed to. In S95, as shown in FIGS. 17F, 17G, and 22, the fourth music is deleted. Specifically, in S140 of FIG. 22, the start 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 the length of the part is 6 clusters or more, and 6
If it is equal to or more than the cluster, the process proceeds to S144, and if it is less than 6 clusters, the process proceeds to S143. In S144, the link pointer is rewritten so that the leading pointers in the parts of 6 clusters or more can be added or added to the P-FRA series, and the process proceeds to S145.

In S143, the link pointer is rewritten so that the leading pointer in the parts of less than 6 classes can be inserted or added to the P-EMPTY series, and S145 is set.
Proceed to. In S145, it is determined whether or not the link pointer of the part to be deleted is 0, and if it is 0, the process proceeds to S146 and 0
If not, the process returns to S141. As a result, until the link pointer becomes 0, the head pointer of each part in the fourth music is assigned to the P-FRA series or the P-EMPTY series, and the fourth music is deleted, as shown in FIG. 17 (F).

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

If only the B point is designated and there is no A point, the B point is designated at the beginning address of the song in order to automatically set the A point to the beginning address of the song. , If you press the delete key without specifying the A point, it is convenient for removing the silent part before the start of the song.

Furthermore, without deleting the section AB,
This is convenient when performing reproduction or the like except between A and B. Next, in S71 of FIG. 16, it is determined whether or not the editing operation is insertion, and if it is insertion, the insertion processing 10 of S74 is performed,
If it is not the insertion, other processing of S72 is performed.

As shown in FIG. 23, the insertion processing 10 in S74 is performed in S100 as in A90 and A point as in S90.
The points are checked and complemented, and the process proceeds to S101. In S101, for example, when the segment AB is to be inserted at the point C as shown in FIG.
It is determined whether or not it is outside the range between the point and the B point. If it is outside, the process proceeds to S103, and if not, the process proceeds to S102.

In S102, an error is displayed on the display unit 24, and the process returns to S1. In S103, as in S91,
At point B, H song is divided into H1 song and H2 song, and S104
Proceed to. In S104, as in S92, F song is divided into F1 song and F2 song at A point, and the process proceeds to S105.

In S105, as in S94, F2 music, G music, and H1 music are combined, and the combined music is inserted after D1 music separated into D1 music and D2 music at C point, and S
Return to 1. Next, in S33 of FIG. 13, it is determined whether or not the memo point system button of the operation unit 25 has been pressed. If so, the process proceeds to S38, and if not, the process proceeds to S34.

In S34, the process corresponding to the other buttons of the operation unit 25 is performed, and the process returns to S1. In the memo point operation of S38, as shown in FIG. 25, in S81, it is determined whether or not the A key of the operation unit 25 is pressed. If the key is pressed, the process proceeds to S82, and if not, the process proceeds to S81. S8
In 2, 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 is pressed. If the B key is pressed, the process proceeds to S84, and if not, the process returns to S1. In S84, the current pointer is stored in the B key as the B point, and the process returns to S1. It should be noted that the A key of the operation unit 25 is a memory key used for playing from a designated point, and the B key is a memory key used for stopping at a designated point. It has been diverted.

Then, in S41 of FIG. 13, it is determined whether or not editing is in progress. If editing is in progress, the process proceeds to S44, and if not, the process proceeds to S42. In S44, edit display is performed on the display unit 24, and the process returns to S1. In S42, standby display is performed on the display unit 24, and the process returns to S1.

[0094]

As described above, according to the invention of claim 1,
Since it is configured to have an editing unit that edits the TOC data stored in the memory unit according to the detection of the disc type detecting unit and a reproducing unit that reproduces the TOC data based on the edited TOC data, When the optical disk cannot be recorded, the TOC data cannot be edited. However, the TOC data can be edited in a pseudo manner and the reproduction can be performed based on the edited TOC data.

According to the invention of claim 2, further,
Since the edited TOC data is output to another memory means, the edited TOC data is output.
Data can be stored in other memory means and expanded such as filing.

[Brief description of drawings]

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

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

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

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

FIG. 7: TOC of pre-master disc containing 12 songs
It is a figure which shows before change of Sector0.

FIG. 8: TOC of pre-master disc containing 12 songs
It is a figure which shows after change of Sector0.

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

FIG. 10 is a diagram showing UTOC information.

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

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

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

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

FIG. 15 is a diagram for explaining time display.

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

FIG. 17 is a diagram for explaining deletion editing.

FIG. 18 is a flow chart of an embodiment of the present invention.

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

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

FIG. 21 is a flow chart of an embodiment of the present invention.

FIG. 22 is a flowchart of an example of the present invention.

FIG. 23 is a flowchart of an 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 MD.

FIG. 27 is a diagram showing TOC information.

[Explanation of symbols]

 1 MD 2 Memory Means 3 Disc Type Detecting Means 4 Editing Means 5 Playing Means 6 Output Means 11 Optical Disc Devices 13 MD 14 Optical Pickups 17 EFM and ACIRC Encoders / Decoders 20 Anti-Vibration Memory Controllers 21 Memory Units 22 Audio Compression Encoders / Decoders

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[Procedure amendment]

[Submission date] December 4, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

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

Claims (2)

[Claims] 1. An optical disk device for reproducing an optical disk having a TOC area indicating a storage location of digital data on the disk, a memory means for storing all TOC data in the TOC area of the optical disk, and whether the optical disk is recordable or not. A disc type detecting means for detecting whether the disc type is detected, an editing means for editing the TOC data according to the detection of the disc type detecting means, and a reproducing means for reproducing the TOC data based on the edited TOC data. Characteristic optical disk device. 2. An optical disk device, further comprising an output means for outputting the edited TOC data to another memory means.