JPH09288883A - Optical disk recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the rapid search of data unrecorded packets by controlling the data unrecorded packets in a track on an optical disk. SOLUTION: Each part is controlled by a controller 9, and the track controlling a beginning address and an ending address on the optical disk 1 as the indexing information is divided into plural packets, and the data are recorded for every divided packet, then the beginning address of the data unrecorded packet in the track of the optical disk 1 is recorded on the recording area on the optical disk 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording apparatus for recording data on an optical disk such as a re-recordable CD-R or CD-E as an information recording medium.

[0002]

2. Description of the Related Art In an optical disk recording apparatus, a track-at is used as a method of recording data on an optical disk such as a write-once compact disk (referred to as "CD-R") and a re-recordable compact disk (referred to as "CD-E"). There is a once recording method and a packet write recording method.

The track-at-once recording method is a method of recording data of one track on an optical disk at a time by one recording operation, and the recording operation cannot be interrupted during recording of data on one track. . The track is a recording unit capable of recording up to 99 pieces of data on the optical disc, and information such as a start address and an end address of each track is recorded in another area on the optical disc as table-of-contents information (referred to as “TOC”). To be done.

On the other hand, the packet write recording system is a system in which data of one track is divided into a unit of data called a plurality of packets, and the data is recorded for each packet, and the data recording for one track is performed in packet units. Therefore, the data recording on one track can be divided into a plurality of times.

That is, according to this packet write recording method, it is possible to record a packet up to the middle of a certain track of the optical disk, eject it from the drive, mount it again on the drive, and additionally write data to the track where the recording was interrupted. Is. For example, a certain track on the optical disk can be packet-written for 400 blocks, then ejected from the drive, re-inserted, and another information can be additionally written on the same track.

Conventionally, information such as a start (start) address and an end address of a track on which data is recorded on an optical disc is used as a TOC, and a lead-in area on the optical disc (TOC located on the inner circumference of the recording area of the optical disc is An optical disk recording device (for example, an actual recording flat area 6) for recording in an area for recording) or an intermediate recording area (referred to as "PMA").
-77080 gazette).

[0007]

In the conventional optical disk recording apparatus, the lead-in area and the P-shaped area on the optical disk can be recorded by either the track-at-once recording method or the packet write recording method.
It is possible to obtain a track in which no data is recorded by referring to the MA information.

However, in the conventional optical disk recording apparatus, when the data is additionally recorded by the packet write recording method, it is necessary to refer to the inside of the track from the first packet to search for the packet in which the data is not recorded. It takes time to get the start address of an unrecorded packet.

For example, in the case of a constant speed drive, when the start address of the packet of the data unrecorded portion in the track where the track length on the optical disk is 60 minutes and the data recording portion is 50 minutes is searched, the maximum search time is 50 minutes. It also costs. Therefore, in the conventional optical disk recording apparatus, when data is additionally recorded on the optical disk by the packet write recording method, there is a problem that it takes a long time to search an unrecorded portion of the data in the track, and the data cannot be additionally recorded.

The present invention has been made in view of the above points, and an object of the present invention is to manage a packet in which data is not recorded in a track on an optical disc and to quickly find the packet in which no data is recorded. .

[0011]

In order to achieve the above object, the present invention divides a track, which manages a start address and an end address as table-of-contents information on an optical disc, into a plurality of packets, and divides the divided packets. An optical disk recording apparatus provided with a packet write recording means for recording data for each packet is provided with a means for recording the start address of a data unrecorded packet in the track in a recording area on the optical disk.

Further, in the optical disk recording apparatus having the packet write recording means, means for recording the start address of the data unrecorded packet in the track in the last area of the track descriptor in the pregap of the track is provided. Good.

Further, in the optical disk recording apparatus provided with the packet write recording means, it is preferable to provide means for recording the start address of the data unrecorded packet in the track in the last packet of the track.

Furthermore, in the optical disc recording apparatus equipped with the packet write recording means, a special track for managing an unrecorded portion is provided on the optical disc for storing start addresses of data unrecorded packets of all tracks on the optical disc. A means for recording the start addresses of the data unrecorded packets of all the tracks on the optical disk may be provided on the special track for managing the unrecorded portion.

According to the optical disk recording apparatus of the first aspect of the present invention, since the start address of the data unrecorded packet in the track of the optical disk is recorded in the recording area on the optical disk, the unrecorded portion in the track on the optical disk is recorded. Can manage the packet.

Therefore, when an optical disc is inserted and data is additionally written in the packet of the unrecorded portion in the track of the optical disc, the data unrecorded packet is recorded based on the start address of the data unrecorded packet recorded on the optical disc. The search can be performed in a short time, and the data can be additionally written by the packet write recording method quickly.

Further, according to the optical disc recording apparatus of the second aspect of the present invention, the start address of the data unrecorded packet in the track is set to the last which is a normally unused free area of the track descriptor in the pregap of the track. Since the data is recorded in the area of No. 2, it is possible to manage the packet of the unrecorded portion in the track on the optical disc and effectively use the normally unused free space on the optical disc.

Further, according to the optical disk recording apparatus of the third aspect of the present invention, since the start address of the data unrecorded packet in the track is recorded in the last packet of the track, the data unrecorded packet is immediately recorded after the additional recording of the packet. The starting address can be recorded. Therefore, it is possible to manage the packet of the unrecorded portion in the track on the optical disc and efficiently perform the recording operation of the start address of the data unrecorded packet.

Further, according to the optical disk recording apparatus of the fourth aspect of the present invention, the start addresses of the data unrecorded packets of all tracks on the optical disk are recorded on the special track for managing the unrecorded portion provided on the optical disk. Therefore, it is not necessary to change the formats in other tracks except the track assigned for managing the unrecorded portion. Therefore, it is not necessary to manage the packet of the unrecorded part in the track on the optical disc and to change the format in each track for the management of the data unrecorded packet of each track.

[0020]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of an optical disc recording apparatus according to an embodiment of the present invention.

This optical disk recording apparatus is a CD-R, C
A spindle motor (hereinafter referred to as “motor”) 2 for rotating an optical disc 1 such as D-E, an optical pickup 3 for mounting a semiconductor laser and irradiating a recording area of the optical disc 1 with a laser beam L, and its optical pickup 3 Is provided with a coarse motor 4 for moving the disk in the radial direction of the optical disk 1 in cooperation with a seek motor provided therein.

A rotation control system 5 for controlling the rotation of the motor 2, a coarse movement motor control system 6 for controlling the drive of the coarse movement motor 4, a pickup control system 7 for controlling the optical pickup 3, and an optical pickup. 3, a signal processing system 8 for transmitting and receiving a signal of information read by 3 and a signal of information written in the recording area of the optical disc 1, and a controller 9 for performing the process according to the present invention together with the control of the control systems 5 to 7 and the processing system 8. Is equipped with.

Further, the controller 9 is connected to the host computer via the external interface 10, and also carries out the processing of sending the information read from the optical disk 1 to the host computer and receiving the information to be written on the optical disk 1 from the host computer.

Then, while rotating the optical disk 1 by the motor 2, the optical pickup 3 is moved in the radial direction of the optical disk 1, and the laser light L is emitted from the semiconductor laser of the optical pickup 3 to the recording area on the recording surface of the optical disk 1. Then, the information is recorded or reproduced.

In the optical disc recording apparatus, when the information is recorded under the control of the controller 9, the laser light L is emitted from the optical pickup 3 to the recording area of the optical disc 1 with the recording power.
And various information is recorded on the optical disc 1. When information is reproduced under the control of the controller 9,
The recording area of the optical disc 1 is irradiated with the laser light L from the optical pickup 3 with reproduction power, and the information recorded in the recording area is reproduced based on the reflected light.

Under the control of the controller 9, the optical disk recording apparatus performs the packet write processing of data for each track on the optical disk 1 according to the present invention and the recording processing of the start address of the data unrecorded packet in the track.

The optical disk recording apparatus according to claims 1 to 4 of the present invention will be described below in order with the optical disk recording apparatus. In the following description, the case where a re-recordable CD-E is used as the optical disc 1 will be described.

(1) Optical disk recording apparatus according to claim 1 of the present invention The controller 9 uses the start address and the end address on the optical disk 1 as the table-of-contents information in the optical disk recording apparatus according to the embodiment of claim 1 of the present invention. A track to be managed is divided into a plurality of packets, and packet write recording means for recording data in each of the divided packets, and a start address of a data unrecorded packet in the track are recorded in a recording area on the optical disc 1. Fulfill the function of the means to do.

FIG. 2 is a diagram showing a format of an area for recording an unrecorded part start address on the optical disk by the optical disk recording apparatus according to the first embodiment of the present invention. The contents of the track format, packet, pregap, etc. in the packet write recording method are described in "Orange Book Part 2, Version 2.
Since it is known as "0", its detailed description is omitted.

The track 13 on the optical disc 1 on which the data is recorded by the packet write recording system has the pregap 2
1 and a plurality of packets, for example, as shown in FIG.
As shown in FIG. 5, the plurality of packets consist of a data recorded packet 22 and a data unrecorded packet 23.

Then, the unrecorded portion start address ad indicating the start address of the data unrecorded packet of the track 13 is recorded in the unrecorded portion information management area set on the optical disc 1. That is, the controller 9 controls each unit in the optical disk recording apparatus to perform additional recording of data in the track 13 and then start an unrecorded portion which is the start address of the packet next to the packet in which the last data is recorded. The address ad is recorded in the unrecorded partial information management area set on the optical disc 1.

FIG. 3 is a flowchart showing a packet additional recording process in the optical disk recording apparatus according to the first embodiment of the present invention. This process is a step (indicated by "S" in the figure) 1 when the packet additional recording process is started.
Then, the unrecorded portion start address ad is read from the unrecorded portion information management area on the optical disc 1, and the process proceeds to step 2 to additionally write data from the data unrecorded packet 23 indicated by the unrecorded portion start address ad.

After that, the operation proceeds to step 3 and the optical disk 1
The unrecorded portion start address ad in the upper unrecorded portion information management area is updated. That is, the start address indicating the data unrecorded packet 23 next to the data recorded packet 22 in which the data is additionally recorded is recorded in the unrecorded portion information management area, the unrecorded portion start address ad is updated, and this processing is ended. .

In this way, when the unrecorded portion start address in the track is recorded and managed in the unrecorded portion information management area on the optical disc, when the optical disc is once ejected and re-added for data recording, The data unrecorded packet can be quickly searched by the unrecorded portion start address to additionally write the data.

Therefore, by managing the start address of the unrecorded portion in the track on the optical disc, when the optical disc is inserted and the packet is additionally recorded on the track having the unrecorded portion, the recording start is performed without searching the inside of the track. Since the address can be obtained, the packet additional write operation can be performed quickly.

(2) Optical disk recording apparatus according to claim 2 of the present invention The controller 9 uses the start address and the end address on the optical disk 1 in the optical disk recording apparatus according to the embodiment of claim 2 of the present invention as table of contents information. The track being managed is divided into a plurality of packets, and the packet write recording means for recording the data for each of the divided packets, and the start address of the data unrecorded packet in the track are stored in the pregap of the track. It functions as a means for recording in the last area of the track descriptor.

FIG. 4 is a diagram showing a format of an area for recording an unrecorded part start address on the optical disk by the optical disk recording apparatus according to the second embodiment of the present invention. The contents of the track format, the format in the pre-gap, and the like in the packet write recording method are also known from "Orange Book Part 2 Version 2.0", and thus detailed description thereof will be omitted.

In this optical disc recording apparatus, as shown in FIG. 4, the last area of the track descriptor 31 in the pregap 21 of the track 13 on the optical disc 1 on which data is recorded by the packet write recording method is recorded as unrecorded partial information. Allocate to the management area 34. This last area is an unused area according to the standard of "Orange Book Part 2 Version 2.0" and can be used freely. The track descriptor 31 also has a track descriptor table 32, a plurality of track descriptor units 33, and a reserve area 35.

Then, the controller 9 controls each unit in the optical disk recording apparatus to write the data in the track 13 and then write the data to the start address of the packet next to the packet in which the data is recorded last. The recording part start address ad is set to the pregap 2 in the track 13.
It is recorded in the unrecorded part information management area 34 which is the last area of the track descriptor 31 of No. 1.

As described above, the track descriptors are described in the pre-gap of each track on the optical disk, and the start address of the track, the recording mode, etc. are described therein. The track descriptor has an area of 2048 bytes, of which the first 1592 bytes are "Orange Book Part 2.
Although it is specified in the current specification of "Version 2.0", the remaining 456 bytes are not specified, so the start address of the unrecorded portion is recorded in the last area of 2048 bytes. The area for recording the start address of the unrecorded portion may be 3 bytes or 4 bytes.

FIG. 5 is a flowchart showing a packet additional recording process in the optical disk recording apparatus according to the second embodiment of the present invention. In this process, when the packet additional recording process is started, step (indicated by “S” in the figure) 11
Then, the unrecorded part start address ad is read from the unrecorded part information management area 34 in the track descriptor 31 on the optical disc 1, and the process proceeds to step 12 where the data is recorded from the data unrecorded packet 23 indicated by the unrecorded part start address ad. Append.

Then, the process proceeds to step 13 to update the unrecorded part start address ad of the unrecorded part information management area 34 in the track descriptor 31 on the optical disk 1. That is, the start address indicating the data unrecorded packet 23 next to the data recorded packet 22 in which the data is additionally recorded is set to the unrecorded partial information management area 3 in the track 13.
4 and update the unrecorded part start address ad,
This processing ends.

In this way, by recording and managing the unrecorded part start address in the last area of the track descriptor for each track on the optical disk, the optical disk is once inserted and re-added for data recording. In this case, the unrecorded portion start address can be referenced to quickly add data to the data unrecorded packet, and the last area of the track descriptor, which is a normally unused free area on the optical disc, can be effectively used. be able to.

(3) Optical disk recording apparatus according to claim 3 of the present invention The controller 9 uses the start address and the end address on the optical disk 1 in the optical disk recording apparatus according to the embodiment of claim 3 of the present invention as table information. The track being managed is divided into a plurality of packets, and the packet write recording means for recording the data in each of the divided packets, and the start address of the data unrecorded packet in the track are set to the last packet of the track. Performs the function of recording means.

FIG. 6 is a diagram showing a format of an area for recording an unrecorded part start address on an optical disk by an optical disk recording apparatus according to a third embodiment of the present invention. In this optical disc recording apparatus, as shown in FIG. 6, the last packet in the track 13 on the optical disc 1 on which data is recorded by the packet write recording method is assigned to the unrecorded partial information management area 24.

Then, the controller 9 controls each unit in the optical disk recording apparatus to additionally record the data in the track 13, and then the unrecorded portion which is the start address of the packet next to the packet in which the data is recorded. The start address ad is recorded in the unrecorded partial information management area 24 which is the last packet in the track 13.

That is, since the data in the packets in the track is recorded in order from the one with the smallest address, the last one packet of the track is used as a dedicated area for recording and managing the start address of the unrecorded portion, and the start of the packet is recorded there. Record the address. Therefore, the actual user information is additionally recorded from the first packet (the one with the smaller address) of the track, and each time additional recording is performed, only the dedicated area for recording and managing the start address of the last unrecorded portion is updated separately. .

FIG. 7 is a flow chart showing a packet additional recording process in the optical disk recording apparatus according to the third embodiment of the present invention. This process is step (indicated by “S” in the figure) 2 when the packet additional recording process is started.
In 1, the unrecorded portion start address ad is read from the unrecorded portion information management area 24 (the last packet in the track 13) at the end of the track on the optical disc 1, and the process proceeds to step 22 and is indicated by the unrecorded portion start address ad. Data is additionally written from the data unrecorded packet 23.

After that, the process proceeds to step 23, and the unrecorded part start address ad of the unrecorded part information management area 24 in the track 13 on the optical disk 1 is updated. That is, the start address indicating the data unrecorded packet 23 next to the data recorded packet 22 with additional data recorded is recorded in the unrecorded portion information management area 24, which is the last packet in the track 13, and the unrecorded portion start address is recorded. The ad is updated, and this processing ends.

In this way, by recording and managing the unrecorded portion start address in the last packet of each track on the optical disk, when the optical disk is once inserted and re-inserted for additional data recording, Data can be quickly added to a data unrecorded packet by referring to the start address of the unrecorded portion, and the start address of the data unrecorded packet is immediately recorded in the last packet located after the added packet after the packet is added. The recording operation can be performed efficiently.

(4) Optical disc recording apparatus according to claim 4 of the present invention The controller 9 uses the start address and the end address on the optical disc 1 in the optical disc recording apparatus according to the embodiment of the present invention as index information. The track being managed is divided into a plurality of packets, and packet write recording means for recording data in each of the divided packets, and the start addresses of the data unrecorded packets of all tracks on the optical disc 1 are provided on the optical disc 1. An unrecorded portion management special track to be stored is provided, and the function of a unit for recording the start address of the data unrecorded packet of all tracks on the optical disk 1 is provided on the unrecorded portion management special track.

FIG. 8 is a diagram showing a format of an area for recording an unrecorded part start address on the optical disk by the optical disk recording apparatus according to the fourth embodiment of the present invention.

In this optical disk recording apparatus, as shown in FIG. 8, the final track on the optical disk 1 on which data is recorded by the packet write recording method is assigned to the unrecorded portion management special track 14. The unrecorded portion management special track 14 includes a plurality of unrecorded portions for recording the start addresses of the data unrecorded packets of all tracks (excluding the unrecorded portion management special track 14) for recording data on the optical disc 1. It is divided into partial information management areas 41.

Then, the controller 9 controls each unit in the optical disc recording apparatus to write data in the track 13 in the recording area 11 of the optical disc 1,
The unrecorded portion start address ad, which is the start address of the packet next to the packet in which the data is recorded, corresponds to the data-recorded track in the unrecorded portion management special track 14 which is the last track of the optical disc 1. The information is recorded in the partial information management area 41 and managed collectively.

That is, by providing a special management special track for recording and managing the start address of the unrecorded part of each track on the optical disk, the format and recording of other tracks (excluding the special management track) are performed. The start address of the unrecorded portion can be managed without changing the method as in the conventional method.

FIG. 9 is a flowchart showing a packet additional recording process in the optical disk recording apparatus according to the fourth embodiment of the present invention. This processing is step (indicated by “S” in the figure) 3 when the packet additional recording processing is started.
1 is a special track 1 for managing an unrecorded portion on the optical disc 1.
The unrecorded portion start address ad is read from the unrecorded portion information management area 41 of 4 (the last track), and the process proceeds to step 32 to additionally write data from the data unrecorded packet 23 indicated by the unrecorded portion start address ad.

After that, the process proceeds to step 33 to update the unrecorded part start address ad of the unrecorded part information management area 41 in the unrecorded part management special track 14 on the optical disc 1. That is, the start address indicating the data unrecorded packet 23 next to the data recorded packet 22 of the track 13 to which the data is additionally recorded is assigned to the track 13 in the unrecorded portion management special track 14 as unrecorded portion information management. The data is recorded in the area 41, the unrecorded portion start address ad is updated, and this processing ends.

In this way, the unrecorded part start address of each track on the optical disk is recorded on the last track of the optical disk and collectively managed,
When the optical disk is once ejected and then re-inserted for additional data recording, it is possible to quickly add additional data to the data unrecorded packet by referring to the unrecorded portion start address. Furthermore, it is not necessary to change the formats in other tracks except the track assigned for managing the unrecorded portion.

In the above-mentioned optical disc recording apparatus, the case where the CD-E is used as the optical disc has been described, but the same can be applied to other recordable optical discs such as the write-once type CD-R. .

Since the format of the CD-E is similar to that of the conventional CD and CD-R, it has attracted attention as a medium that can be used in an ordinary optical disk recording device.
Since R is a write-once medium, but it is a re-recordable medium, a recording method that makes the most of its characteristics is required.

In the case of the write-once CD-R, it is not easy to record the information of the unrecorded area somewhere on the medium, and if the information of the unrecorded area is recorded somewhere on the medium, It is not possible to easily update the information in the unrecorded area after the data is additionally written.

On the other hand, in the case of a re-recordable CD-E, it is easy to record the information in the unrecorded area somewhere on the medium, and the information in the unrecorded area is updated after the data is additionally written. Can be done easily.

That is, since the CD-R medium is write-once, once the start address of the unrecorded portion is recorded, the recording area is consumed each time the track is additionally written when the track is additionally written. As a result, the number of times the start address of the unrecorded portion is written is limited.

On the other hand, since the CD-E medium can be re-recorded, the start address can be updated many times,
It is most suitable for management of the start address of the unrecorded portion on the medium according to the present invention, and if the CD-E is used in the optical disc recording apparatus of the present invention, the characteristics of the re-recordable CD-E can be fully utilized. In addition, when a rewritable optical disk other than CD-E is used, the rewritable characteristics can be fully utilized. Therefore,
The optical disk recording apparatus of the present invention can exert the characteristics of the optical disk when a re-recordable optical disk such as CD-E is used.

[0065]

As described above, according to the optical disk recording apparatus of the present invention, it is possible to manage unrecorded data packets in a track on the optical disk and quickly find out the unrecorded data packets. Data can be quickly recorded on the optical disc depending on the recording method.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc recording apparatus according to an embodiment of claims 1 to 4 of the present invention.

FIG. 2 is a diagram showing a format of an area for recording an unrecorded part start address on the optical disc by the optical disc recording apparatus according to the first embodiment of the present invention.

FIG. 3 is a flowchart showing a packet additional recording process in the optical disc recording apparatus according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a format of an area for recording an unrecorded part start address on an optical disc by an optical disc recording apparatus according to an embodiment of claim 2 of the present invention.

FIG. 5 is a flowchart showing a packet additional recording process in the optical disc recording apparatus according to the second embodiment of the present invention.

FIG. 6 is a diagram showing a format of an area for recording an unrecorded portion start address on an optical disc by an optical disc recording apparatus according to an embodiment of claim 3 of the present invention.

FIG. 7 is a flowchart showing a packet additional recording process in the optical disc recording apparatus according to the third embodiment of the present invention.

FIG. 8 is a diagram showing a format of an area for recording an unrecorded portion start address on an optical disc by an optical disc recording apparatus according to an embodiment of claim 4 of the present invention.

FIG. 9 is a flowchart showing a packet additional recording process in the optical disc recording apparatus according to the fourth embodiment of the present invention.

[Explanation of symbols]

 1: Optical Disc 2: Motor 3: Optical Pickup 4: Coarse Motor 5: Rotation Control System 6: Coarse Motor Control System 7: Pickup Control System 8: Signal Processing System 9: Controller 10: External Interface 11: Recording Area 12: Lead-in area 13: Track 14: Special track for unrecorded portion management 21: Pregap 22: Data recorded packet 23: Data unrecorded packet 24, 34, 41: Unrecorded portion information management area 31: Track descriptor 32: Track Descriptor table 33: Track descriptor unit 35: Reserved area ad: Unrecorded part start address L: Laser light

Claims (4)

[Claims] 1. An optical disc provided with a packet write recording means for dividing a track in which a start address and an end address are managed as table of contents information on an optical disc into a plurality of packets and recording data in each of the divided packets. In the recording device, an optical disc recording device is provided with means for recording a start address of a data unrecorded packet in the track in a recording area on the optical disc. 2. An optical disk provided with a packet write recording means for dividing a track in which a start address and an end address are managed as index information on the optical disk into a plurality of packets and recording data in each of the divided packets. In the recording device, an optical disc recording device is provided with means for recording the start address of the data unrecorded packet in the track in the last area of the track descriptor in the pregap of the track. 3. An optical disk comprising a packet write recording means for dividing a track, in which a start address and an end address are managed as table of contents information on the optical disk, into a plurality of packets, and recording data in each of the divided packets. In the recording apparatus, an optical disk recording apparatus is provided with means for recording the start address of the data unrecorded packet in the track in the last packet of the track. 4. An optical disc provided with a packet write recording means for dividing a track in which a start address and an end address are managed as index information on the optical disc into a plurality of packets, and recording data in each of the divided packets. In the recording device, an unrecorded portion management special track for storing the start addresses of data unrecorded packets of all tracks on the optical disc is provided on the optical disc, and the unrecorded portion management special track is provided on all tracks on the optical disc. An optical disk recording apparatus comprising means for recording the start address of the data unrecorded packet.