JP3427977B2 - 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 a recordable optical disc device such as a mini disc device, and more particularly to editing data recorded by the optical disc device.

[0002]

2. Description of the Related Art Minidiscs (MDs) are classified into read-only discs which can only be reproduced and record / reproduce discs which can be recorded and reproduced. The recording / playback disc is shown in FIG.
The TOC (Table of Contents) area 25, which is prerecorded by the pit row, has a structure as shown in FIG.
And a groove area in the range of 16 mm to 61 mm. The groove area is an area capable of recording / reproducing by MO (magneto-optical) method, and is a UTOC for recording user information (management information) such as a name of recorded data and a start / end address of the recorded data on the inner circumference side. (User's Tab
(le of Contents) area 26 and a program area 27 for recording recording data and the like.

The mini disk is housed in a cartridge, and when the cartridge is loaded in the mini disk device, the shutter of the cartridge opens and the TOC area 2
5 and the UTOC area 26 are read, and the user information such as the name of the recording data and the start / end address of the recording data are all taken into the mini disk device. The user selects the ERASE, MOVE,
When editing DIVIDE, COMBINE, etc.,
Move within the user information captured in the mini disk device,
Erasure, division, etc. are performed, and movement, erasure, division, etc. on the program area 27 do not occur.

Since the data in the program area 27 is reproduced according to the user information, if the user information is edited, it is reproduced as edited. For example, if the user information is erased, the data in the program area 27 corresponding to the erased user information will not be reproduced in the same way as it was erased (although it exists). The edited and changed contents of the user information taken in the mini disc device is the UTOC area 26 of the disc 1 when the eject key of the cartridge is operated or the power key of the mini disc device is turned off.
By updating the content of, the data is recorded on the disc 1.

[0005]

When the user information recorded in the UTOC area 26 is edited, the user conventionally confirms the edited content before confirming the edited content, and if the user does not like it, restores the original information. Although there was a function, there was a problem that once the edited contents were confirmed, it could not be undone.

As a technique for solving the similar problem, the user information is not stored in the mini disk device at the time of recording and is collectively recorded in the UTOC area 26 at the end of recording. User information of U
A "method of rewriting UTOC information of a recording / playback disc" is disclosed in which the UTOC information (user information) of a recorded song is recorded even if a power failure or an earthquake occurs during recording in the TOC area 26. -213055 gazette. The present invention has been made in view of the above-mentioned circumstances, and provides an optical disk device capable of returning to a previous state even when the content of editing is disliked or incorrect even when the content is edited. The purpose is to provide.

[0007]

According to a first aspect of the present invention, there is provided an optical disc device, a management information area for recording management information including a name and a recording position for each recording data, and recording data for recording the recording data at the recording position. An optical disc device for recording / reproducing an optical disc having an area, editing the management information, and updating the contents of the management information area with the edited management information; Means and second storage means for storing the management information stored in the first storage means as edited management information in response to an instruction from the outside, and power-off from the outside or
When there is an instruction to eject the optical disk, the first storage device
The management information stored in the last stage of the optical disc is stored in the above-mentioned optical disc.
And recording means at a predetermined position in the management information area .

In this optical disc apparatus, recording / reproduction of an optical disc having a management information area for recording management information including a name and recording position for each recording data and a recording data area for recording recording data at the recording position is performed. Also, the management information is edited, and the contents of the management information area are updated with the edited management information. The first storage unit stores the management information before editing, and the second storage unit stores the management information stored in the first storage unit as the management information after editing according to an instruction from the outside. In addition, power off or light from the outside
When there is an instruction to eject the disc, the means for recording is
The management information last stored in the first storage means is stored in the optical disc.
It is recorded at a predetermined position in the management information area. This allows
Even when you have made an edit, you like it
If you don't get it or make a mistake,
It can be returned and the latest management information before editing
It was possible to record it on an optical disc and put it on it, and edited it.
After that, if the power is turned off or the optical disc is ejected
But I didn't like the edit or I was wrong
When you do, you can return to the previous state.

[0009] the optical disc according to the second inventive device, the first storage means, each time an edit is performed sequentially stored with the order stored management information before editing the first memory means, said second storage The means is a finger according to the instruction from the outside.
It is characterized in that the management information corresponding to the determined order is stored as the edited management information.

[0010] In this optical disk apparatus, the first storage means, each time an edit is performed, the management information before the editing
The data are sequentially stored together with the order in which they are stored in the first storage means .
Second SL 憶means, designated by an external instruction sequence
The management information corresponding to is stored as the edited management information.
It With this, even if the user has made an edit, when he / she does not like or is wrong with the edited content, it is possible to return to the state before the instructed order.

An optical disk device according to a third aspect of the present invention is the above-mentioned external device.
The order specified by the instruction from the section further includes an order in which the management information recorded in a predetermined position of the management information area is stored in the first storage unit.

In this optical disk device, an instruction from the outside
The order designated by includes the order in which the first storage means stores the management information recorded in the predetermined position of the management information area. Therefore, after the editing is performed, the power is turned off or the optical disc is ejected, and then the editing is performed again. If you don't like or are wrong with your edits, you can revert to the state just before the previous edit.

The optical disk device according to the fourth aspect of the present invention, when the power is turned off or the optical disk is ejected from the outside,
Storage means for storing the stored contents of the first storage means and specific information for specifying the optical disc, and the specific information from the loaded optical disc when the power is turned on or when the optical disc is loaded. When the means for reading and the means for comparing the specific information read by the means and the specific information stored by the storage means are different from each other by the means, the storage means stores them. It further comprises means for erasing the specified information and the stored contents.

In this optical disk device, when the power is turned off or the optical disk is instructed to be ejected from the outside, the saving means saves the contents stored in the first storage means and the specific information for specifying the optical disk, and the power is turned on. When the optical disc is loaded or when the optical disc is loaded, the reading means reads the specific information from the loaded optical disc. The comparing means compares the specific information read by the reading means with the specific information stored by the storing means, and when the comparing means determines that the two pieces of specific information do not match, the deleting means uses the storing means. The stored specific information and the stored contents of the first storage means are erased. This allows you to return to the state before the previous edit even if you do not like the edited content or you made a mistake when you edit it again after turning off the power or ejecting the optical disk. Done,
You can continue to edit.

The optical disc apparatus according to a fifth aspect of the present invention is characterized in that the specific information is a recording date and time of the last recorded data of the recording data.

In this optical disk device, since the specific information is the recording date and time of the last recorded data of the recorded data, it is not necessary to newly specify the specific information.
Further, it is not necessary to newly record the specific information on the optical disc.

The optical disk device according to the sixth aspect of the present invention further comprises means for displaying the management information stored in the first storage means and the management information recorded at a predetermined position in the management information area according to an instruction from the outside. Is characterized by.

In this optical disk device, the display means displays the management information stored in the first storage means and the management information recorded at a predetermined position in the management information area according to an instruction from the outside. You can check the management information before editing even afterwards.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings showing the embodiments thereof. FIG. 1 is a block diagram showing the configuration of an embodiment of an optical disk device according to the present invention. This optical disc device is a recordable / reproducible mini disc device. When the rectangular flat plate-shaped cartridge 2 accommodating the mini disc 1 is loaded in the mini disc device, the shutters on both sides of the cartridge 2 are opened to open the mini disc device. When the optical pickup 5 reads from one surface of the mini disk 1 through the objective lens 4 and performs recording, a magnetic field from the magnetic head 9 is applied to the other surface of the mini disk 1.

The mini disk 1 is a spindle motor 3
The optical pickup 5 is driven by the feed motor 6 to move in the radial direction of the mini disk 1 by being rotationally driven so as to have a predetermined constant linear velocity. During recording, the magnetic head 9 is driven by the head drive unit 10 to move in the radial direction of the mini disk 1, and the position thereof is controlled so that the same track is sandwiched from both sides together with the optical pickup 5. Spindle motor 3, optical pickup 5 and feed motor 6
Are controlled by the servo control circuit 7.

The signal detected by the optical pickup 5 is RF
It is sent to the amplifier 12 and amplified. Of the signals amplified by the RF amplifier 12, the focus signal and the track error signal are sent to the servo control circuit 7 and used for focus control and position control of the optical pickup 5, and the address signal is sent to the address decoder 11. Decrypted
It is given to the encoder / decoder 13. Encoder /
The address signal sent to the decoder 13 is used for position control of the magnetic head 9 by the head drive unit 10, and
Servo control circuit 7 sent to system controller 8
It is used for drive control of the spindle motor 3, the optical pickup 5, and the feed motor 6, etc.

The data signal of the signals amplified by the RF amplifier 12 is sent to the encoder / decoder 13 for decoding, and the data signal is passed through the vibration-proof memory controller 14 to D
It is sent to the RAM 15 (Dynmic Random Acces Memory). The data sent to the DRAM 15 is once stored and then sent to the audio compression encoder / decoder 16 through the anti-vibration memory controller 14 to be decoded into audio data before audio compression, and the 16-bit D / A converter 18 Is output through.

The audio data input through the 16-bit A / D converter 17 is the audio compression encoder / decoder 1.
6 is voice-compressed and coded, vibration-proof memory,
It is sent to the DRAM 15 through the controller 14.
The data sent to the DRAM 15 is once stored and then
It is sent to the encoder / decoder 13 through the vibration-proof memory controller 14 to be encoded, and the magnetic head 9
And recorded on the mini disc 1 by the optical pickup 5.

Anti-vibration memory controller 14 and DR
AM15 is the time required for storage in DRAM15 and D
Utilizing the difference in the time required to read from the RAM 15,
Prevents skipping due to vibration. The system controller 8 is connected to the display unit 19, the clock circuit 20, and the operation unit 21, and includes the servo control circuit 7 and the encoder / decoder 13.
In addition to controlling the operation of the vibration-proof memory controller 14, the designated information is displayed on the display unit 19 according to the operation of the operation unit 21.

The mini-disc (MD) includes a read-only disc that can only be played back and a record / playback that can be recorded and played.
There is a playback disc, and the recording / playback disc is, as shown in FIG. 7, 14.5 mm to 16 mm from the center of the disc 1.
TOC pre-recorded by the pit row in the range
(Table of Contents) Area 25, 16mm-61mm
And the groove area of the range. The groove area is an area in which recording / reproduction can be performed by the MO (magneto-optical) method, and user information (management information) such as the name of the record data on the inner circumference side and the start / end address of the record data.
UTOC (User's Table of Contents) area 26 for recording data and program area 2 for recording recording data and the like
7 and 7.

As shown in FIG. 2, the DRAM 15 has a TOC (Table of Contents) area 2 of the mini disc 1 when the cartridge 2 is loaded in the mini disc device.
5 and UTOC (User's Table of Contents) area 2
TOC / UT that stores information read from 6 (FIG. 7)
When the OC storage unit 15a (second storage unit) and the user information (management information; UTOC information) in the UTOC area 26 are edited, the past UTOC storage unit 15b (first storage unit, storage unit) that stores the user information before editing ), A recording data storage section 15c for temporarily storing reproduction / recording data, and a specific data storage section 15 for storing data for specifying a disc.
d (storing means). Past UTOC memory 1
Power is supplied to the 5b and the specific data storage unit 15d even when the power of the mini disk device is off, and the stored contents are maintained.

The operation of the minidisk device having such a configuration will be described below with reference to the flow charts of FIGS. When the cartridge 2 is loaded into the mini disk device, the mini disk device will receive the TOC area 25 and the UTOC area 26 of the mini disk 1 (FIG. 7).
Read TOC information and user information from TOC / UT
The data is stored in the OC storage unit 15a (S2). Here, as shown in FIG. 6A, the UTOC area 26 of the mini-disc 1 is composed of eight sectors of UTOC sector 0 to UTOC sector 7, and the UTOC sector 0 has a start / end address ( (Track data) is UTO
The name (name data) of each recorded data is recorded in the C sector 1.

Next, the mini disk device checks whether or not the data for specifying the disk is stored in the specific data storage section 15d (S4), and if the data is stored, the specific data storage is performed. The data for specifying the disc (for example, the recording date and time of the last recorded recording data) is read from the section 15d , and the TOC / UTOC
From the storage unit 15a, the recording date and time of the last recorded recording data of the recording data of the mini disk 1 is read (S
6) Then, the read both data are compared (S7).

The minidisk device compares both data (S7), and when both data match (S7).
8), past UTOC storage unit 15b and specific data storage unit
The stored contents of 15d are maintained as they are, and when the two data do not match (S8), the stored contents of the past UTOC storage unit 15b and the specific data storage unit 15d are erased (S1).
0). When the data for identifying the disc is not stored (S4), the mini-disc device does not read the data for identifying the disc or compare the two data.

In the mini disk device, when the key for instructing the editing of the user information is operated in the operation section 21 (S12), the editing function is activated (S14), and the TOC /
From the UTOC storage unit 15a, a name for each recorded data and a start / end address (track data) for each recorded data are added with a number that can identify the order stored in the past UTOC storage unit 15b, and the past UTOC storage unit 15b is added.
(S142).

Next, the mini disk device is set to ERASE,
Operation unit 2 such as MOVE, DIVIDE, COMBINE
In accordance with the key operation in No. 1, the user information in the TOC / UTOC storage unit 15a is edited and a display accompanying the editing is performed (S144), and the key operation for instructing the end of the editing (S
146), the editing function is terminated (S148), and the process returns. When the key for instructing the editing of the user information is not operated (S12), the mini disk device operates according to the other key operation of the operation unit 21 (S34).

In the mini disk device, when the display of the name data for each recording data stored in the past UTOC storage unit 15b is instructed by the key operation together with the order stored in the past UTOC storage unit 15b (S15, S3
5), the name data of the order (before the number of times) is displayed (S
33, S36). The user can compare the displayed name data with the name data in the TOC / UTOC storage unit 15a.

Next, the mini disk device is used in the past UTOC.
The TOC / UTOC storage unit 15a (UTOC storage unit) of the name data for each recording data stored in the storage unit 15b
When the return to the command is instructed by the key operation together with the order stored in the past UTOC storage unit 15b (S16,
S37), the name of each recorded data and the start / end address (user information) of each recorded data in that order (before the number of times) are stored in the past UTOC storage unit 15b as TOC / UTO.
It is returned to the C storage unit 15a and stored (S18) (second)
Storage means).

In the mini disk device, when the eject key or the power off key is operated on the operation unit 21 (S2
0), the contents stored in the TOC / UTOC storage unit 15a (UTOC storage unit) are represented by the UTOC sector 0 shown in FIG.
And in the UTOC sector 1 (S22).

Next, the mini disk device is used in the past UTOC.
The name of each recorded data and the start / end address of each recorded data stored in the storage unit 15b at the end are stored in the past UT.
Recording is performed from the OC storage unit 15b to the UTOC sector 3 and the UTOC sector 5 shown in FIG. 6A (S24). As a result, when the editing (S14) is performed once, the name and start / end address of each piece of recorded data before editing is changed to UT as shown in FIGS. 6 (b) and 6 (c).
The OC sector 0 and the UTOC sector 1 are saved to the UTOC sector 3 and the UTOC sector 5.

On the other hand, the name of each recorded data saved in the UTOC sector 3 and the UTOC sector 5 (S24) and the start / end address order (before the number of times) of each recorded data are instructed, and the TOC / UTOC storage unit 15a is instructed. When the eject key or the power-off key is operated after being restored and stored (S18) (S20), the user information is saved in the UTOC sector 3 and the UTOC sector 5 as shown in FIG. 6D (S24). Will be returned to UTOC sector 0 and UTOC sector 1.

In the mini disk device, the eject key or the power off key is operated (S20), and the TOC / UTOC
The storage contents of the storage unit 15a are stored in the UTOC sector 0 and the UT.
After the user information recorded in the OC sector 1 (S22) and finally stored in the past UTOC storage unit 15b is recorded in the UTOC sector 3 and the UTOC sector 5 (S24), the storage content of the past UTOC storage unit 15b is saved. (S26),
The data for specifying the disk (for example, the recording date and time of the last recorded recording data) is stored in the specific data storage unit 15.
It is stored in d and saved (S28). The past UTOC storage unit 15b and the specific data storage unit 15d maintain their power supplies even if the power-off key of the minidisk device is operated, and the stored contents are saved. The data for identifying the disc is not limited to the recording date and time of the last recorded data, but an identification symbol uniquely created by the mini-disc device is recorded at a predetermined position on the disc, and the specific data storage section is also provided. You may make it memorize | store in 15d .

Next, in the mini disk device, when the (S20) key operated by the operation unit 21 is not the eject key (that is, the power off key)
In (S30), the power is turned off (S32). Operation part 2
When the key operated in step 1 (S20) is the eject key (S30), the disc is ejected (S38), and then the power is turned off (S32).

[0039]

According to the optical disk device of the first aspect of the present invention, even when editing has been done, if the content of the editing is disliked or wrong, it is possible to return to the previous state, and at the same time, before editing. Latest management information
Information can be recorded on an optical disc and placed, and edited
After turning off the power or ejecting the optical disk
But I don't like the edits
If you do, you can return to the previous state .

According to the optical disk device of the second invention,
Even if you make an edit, if you don't like the edit or you made a mistake, you can revert to the previous state of the order you specified.

According to the optical disk device of the third invention,
After editing and turning off the power or ejecting the optical disc,
Even when the editing is performed again, if the user does not like or is wrong with the edited content, the state immediately before the previous editing can be restored.

According to the optical disk device of the fourth invention,
After editing and turning off the power or ejecting the optical disc,
Even when the editing is performed again, if the user does not like or is wrong with the edited content, the state before the previous editing can be restored, and the editing can be continued.

According to the optical disk device of the fifth invention,
Since the specific information is the recording date and time of the last recorded recording data of the recording data, it is not necessary to newly define the specific information and it is not necessary to newly record the specific information on the optical disc.

According to the optical disk device of the sixth invention,
The display means displays the management information stored in the first storage means and the management information recorded at a predetermined position in the management information area according to an instruction from the outside. Therefore, even after the editing, the management information before the editing is displayed. Can be confirmed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an optical disc device according to the present invention.

FIG. 2 is a block diagram showing a configuration example of a DRAM of the optical disc device according to the present invention.

FIG. 3 is a flowchart showing an operation of the optical disc device according to the present invention.

FIG. 4 is a flowchart showing an operation of the optical disc device according to the present invention.

FIG. 5 is a flowchart showing an operation of the optical disc device according to the present invention.

FIG. 6 is an explanatory diagram for explaining the operation of the optical disc device according to the present invention.

FIG. 7 is an explanatory diagram for explaining a structure of a recording / reproducing mini disc.

[Explanation of symbols]

1 mini disk 5 optical pickup 7 servo control circuit 8 system controller 9 magnetic head 15 DRAM 15a TOC / UTOC storage unit (second storage unit) 15b past UTOC storage unit (first storage unit, storage unit) 15c recording data storage unit 15d Specific data storage unit (storing means) 25 TOC area 26 UTOC area (management information area) 27 Program area (recorded data area)

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 27/00-27/06

Claims (6)

(57) [Claims] 1. Recording / reproducing of an optical disc having a management information area for recording management information including a name and recording position for each recording data and a recording data area for recording the recording data at the recording position, In the optical disc device for editing the management information and updating the contents of the management information area with the edited management information, first storage means for storing the management information before editing, and management information stored by the first storage means According to instructions from the outside
Second storage means for storing as management information after editing , and external
When there is an instruction to turn off the power or eject the optical disk
The management information last stored in the first storage means
Recording at a predetermined position in the management information area of the optical disc
Optical disk apparatus characterized by comprising a means that. Wherein said first storage means, each time an edit is performed, the storing management information before editing the first memory means
Sequentially stored together with the order, the second storage means stores
The optical disk device according to claim 1, wherein the management information corresponding to the order designated by the instruction from the section is stored as the edited management information. 3. The order designated by the instruction from the outside further includes the order of management information recorded in a predetermined position of the management information area, which is stored in the first storage means. Item 2. The optical disk device according to item 2 . 4. When a power-off or an optical disc eject instruction is given from the outside, a storage unit for storing the storage content of the first storage unit and specific information for identifying the optical disc, and a power source are turned on. When the optical disc is loaded or when the optical disc is loaded, a unit that reads the specific information from the loaded optical disc, a unit that compares the specific information read by the unit and the specific information stored by the storage unit, and the unit There is when the two specific information is mismatched, the optical disk apparatus according to any one of claims 1 to 3, further comprising a means for erasing the identification information and the stored contents said storage means is stored. Wherein said specific information, according to claim 4 wherein a last recorded date and time of recording data recorded among the recording data
The optical disk device described. 6. A management information recorded at a predetermined position in the management information the first memory means has stored and the management information area, claim 1-5, further comprising means for displaying an instruction from the outside The optical disk device described in 1.