JP3924422B2 - Information recording apparatus and information recording method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information recording apparatus such as an optical disk apparatus that writes data to a data recordable information recording medium such as a CD-R disk, a CD-RW disk, a DVD-R disk, and a DVD-RW disk by a packet write method.
[0002]
[Prior art]
Usually, data is written to an information recording medium such as a CD-R disc, a CD-RW disc, a DVD-R disc, and a DVD-RAM disc in units of tracks by a track at once (TAO) method. If the timing of reading data from a host device such as a host computer is late, there is no data to be written in the buffer, and a buffer underrun that prevents the writing from continuing can occur.
[0003]
Since the information recording medium as described above cannot add data to the information recording medium such as the optical disk as described above, for example, in the case of a write-once optical disk such as a CD-R disk, When a buffer underrun occurs, the track is wasted.
[0004]
On the other hand, there is a packet write method in which data for one track is divided and written into a plurality of recording units called packets.
The packet write method has an advantage that writing can be performed without worrying about buffer underrun, because writing can be performed on a small amount of data on an optical disk.
[0005]
There are two types of packet write methods: a fixed-length packet write method and a variable-length packet write method.
The fixed-length packet write method is a method in which the packet length indicating the number of user data blocks in the packet is fixed in the track, and the variable-length packet write method is a method in which packets of various packet lengths are mixed in the track. .
[0006]
A universal disk format (UDF) is a file system that uses this fixed-length packet write method.
[0007]
For example, a CD-R disc can be overwritten with a sequential UDF that is connected after a previously recorded packet, and a CD-RW disc can be overwritten with data. After the area is filled with fixed-length packets, data recording is performed randomly in units of packets, and recording by random UDF is performed in which data reproduction is performed in units of blocks.
[0008]
Conventionally, in a file system that records data by the packet write method as described above, when a large amount of data is written across a plurality of packets, information recording in which a plurality of packets are continuously written in order to reduce the writing processing speed. There was an apparatus (for example, see JP-A-11-126428).
[0009]
This information recording apparatus stores data extending over a plurality of packets in a buffer in its own apparatus, and starts writing the next packet following the end of writing one packet.
Further, in such an information recording apparatus, even when the recording positions of packets to be written are not continuous, if there is an empty area in the buffer, data is stored in the buffer in advance.
[0010]
[Problems to be solved by the invention]
However, in the conventional information recording apparatus as described above, when a write error occurs during continuous writing of packets, unwritten data remaining in the buffer of the information recording apparatus becomes invalid. .
[0011]
Also, if an error occurs during packet writing, when the error is detected, the writing process is interrupted and an error report is sent to the host computer. It becomes invalid without being recorded on the medium.
[0012]
Thus, for example, when retry processing of packet writing is performed on the host computer side, the host computer must transfer again the data transferred in all the write requests made following the packet write request in which the write error occurred. As a result, there was a problem that data could not be recorded efficiently.
[0013]
The present invention has been made to solve the above problems, and when a write error occurs during data write by the packet write method, the data of the unwritten packet stored up to that point becomes invalid. An object of the present invention is to reduce the processing load on the host computer at the time of data recording by avoiding the retry process of storing the unwritten packets again and rewriting them as much as possible.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the present invention divides and stores data supplied from the outside into packets having a predetermined data length, and stores a plurality of packets stored in the packet storage means as data. Packet writing means for continuously writing by forming a track on a recordable information recording medium, and writing for starting writing of the next packet following the end of writing of one packet when writing by the packet writing means In the information recording apparatus provided with the write control means, when the packet write error is detected, it is determined whether or not there is an unwritten packet in the packet storage means excluding the write error packet. And that it is determined that there is an unwritten packet by the means for determining whether or not there is an unwritten packet. An unwritten packet writing means for writing the unwritten packet to a predetermined area of the information recording medium, and a writing error report output means for outputting an error report to the outside after writing by the unwritten packet writing means. It is provided.
[0015]
Also, a packet storage means for dividing and storing data supplied from outside into packets having a predetermined data length, and a track on an information recording medium capable of recording a plurality of packets stored in the packet storage means. Information recording apparatus comprising: packet writing means formed and continuously written; and writing control means for starting writing of the next packet at the end of writing of one packet when writing by the packet writing means , When an error report output means for outputting an error report to the outside when a write error of the packet is detected, and when a write end request issued from the outside after outputting the error report by the error report output means, Whether there are unwritten packets in the packet storage means excluding packets that have been written errors Unwritten packet presence / absence determining means for determining whether or not there is an unwritten packet by the unwritten packet presence / absence determining means, and writing the unwritten packet to a predetermined area of the information recording medium Packet writing means may be provided.
[0016]
Further, a packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a track on an information recording medium capable of recording data on a plurality of packets stored in the packet storage means. Information recording apparatus comprising: packet writing means formed and continuously written; and writing control means for starting writing of the next packet at the end of writing of one packet when writing by the packet writing means The packet storage means for determining whether or not there is an unwritten packet in the packet storage means excluding the packet with the write error, and the presence or absence of the unwritten packet. When it is determined by the determination means that there is an unwritten packet, the unwritten packet Determines whether data has been stored to the end, and when it is determined by the determining means that data has been stored to the end of the packet, the unwritten packet is stored in the information recording medium. When it is determined that the data has not been stored until the end of the packet is written to the predetermined area, an unwritten packet document that outputs a write error report to the outside without writing the packet to the predetermined area of the information recording medium It is preferable to provide a write and write error report output means.
[0017]
Also, a packet storage means for dividing and storing data supplied from outside into packets having a predetermined data length, and a track on an information recording medium capable of recording a plurality of packets stored in the packet storage means. Information recording apparatus comprising: packet writing means formed and continuously written; and writing control means for starting writing of the next packet at the end of writing of one packet when writing by the packet writing means The packet storage means for determining whether or not there is an unwritten packet in the packet storage means excluding the packet with the write error, and the presence or absence of the unwritten packet. When it is determined by the judging means that there is an unwritten packet, in the unwritten packet Determines whether or not data has been stored to the end, and when it is determined by the determining means that data has been stored to the end of the packet, the unwritten packet is designated as a predetermined value in the information recording medium. If it is determined that data has not been stored until the end of the packet is written to the area, the remaining area in the packet is filled with dummy data and then written to the predetermined area of the information recording medium. It is advisable to provide an insertion means.
[0018]
Further, a packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a track on an information recording medium capable of recording data on a plurality of packets stored in the packet storage means. Information recording apparatus comprising: packet writing means formed and continuously written; and writing control means for starting writing of the next packet at the end of writing of one packet when writing by the packet writing means The packet storage means for determining whether or not there is an unwritten packet in the packet storage means excluding the packet with the write error, and the presence or absence of the unwritten packet. When it is determined by the determination means that there is an unwritten packet, the unwritten packet Determines whether data has been stored to the end, and when it is determined by the determining means that data has been stored to the end of the packet, the unwritten packet is stored in the information recording medium. When it is determined that the data has not been stored until the end of the packet is written in the predetermined area, the remaining data is received from outside and filled in the remaining area in the packet, and then stored in the predetermined area of the information recording medium. An unwritten packet writing means for writing may be provided.
[0019]
Further, externally supplied data is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and a plurality of stored packets are written into one packet. In the information recording method of continuously writing while starting writing of the next packet following the end, when a write error of the packet is detected, an unwritten packet excluding the packet with a write error is stored in the stored packet. When it is determined whether or not there is an unwritten packet, the unwritten packet is written in a predetermined area of the information recording medium, and an error report is output to the outside after the writing.
[0020]
Further, externally supplied data is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are written into one packet. In the information recording method that writes continuously while starting writing the next packet continuously at the end, when an error in writing the packet is detected, an error report is output to the outside, and after that output, the writing issued from the outside is terminated When a request is received, it is determined whether or not there is an unwritten packet other than a packet with a write error in the stored packet. When it is determined that there is an unwritten packet, the unwritten packet It may be written in a predetermined area of the recording medium.
[0021]
Further, externally supplied data is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and a plurality of stored packets are written into one packet. In the information recording method of continuously writing while starting writing of the next packet following the end, when a write error of the packet is detected, an unwritten packet excluding the packet with a write error is stored in the stored packet. When it is determined that there is an unwritten packet, it is determined whether data is stored to the end in the unwritten packet, and data is stored to the end in the packet. If it is determined that the unwritten packet is written to a predetermined area of the information recording medium, the packet is When the last until the data in the bets is determined not to be stored, the packet may outputs the external to write error report not written in a predetermined area of the information recording medium.
[0022]
Further, externally supplied data is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are written into one packet. In the information recording method of continuously writing while starting writing of the next packet following the end, when a write error of the packet is detected, an unwritten packet excluding the packet with a write error is stored in the stored packet. When it is determined that there is an unwritten packet, it is determined whether data is stored to the end in the unwritten packet, and data is stored to the end in the packet. If it is determined that the unwritten packet is written to a predetermined area of the information recording medium, When the last to data in Tsu bets is determined not to be stored may written from filling the dummy data in the remaining area in the packet in a predetermined area of the information recording medium.
[0023]
Furthermore, data supplied from the outside is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are combined into one packet. In the information recording method for continuously writing while starting writing of the next packet after the end of writing, when a write error of the packet is detected, an unwritten packet excluding the write error packet in the stored packet When it is determined that there is an unwritten packet, it is determined whether data is stored to the end in the unwritten packet, and the data is stored to the end in the packet. When it is determined that the packet has been written, the unwritten packet is written into a predetermined area of the information recording medium. When the last until the data in the packet is determined not to be stored may written receive the remaining data from the outside from filling the remaining space in the packet in a predetermined area of the information recording medium.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of an optical disk recording apparatus which is an embodiment of the information recording apparatus of the present invention.
[0025]
This optical disk recording apparatus (optical disk drive) includes a motor 1 that rotates an optical disk 11, a coarse motion motor 2 that moves an optical pickup 3 in the radial direction of the optical disk 11, an optical pickup 3, and a rotation control system 4 that controls each of them. , Coarse motor control system 5, pickup control system 6 and signal processing system 7.
In addition, since the function and process of each part of these 1-7 are well-known techniques, the detailed description is abbreviate | omitted.
[0026]
The controller 8 is realized by a microcomputer including a CPU, a ROM, and a RAM, controls the entire apparatus and executes various control processes according to the present invention, and operations when the controller 8 executes various processes. A buffer 9 is used for storing information such as packet data to be recorded on the optical disc 11 and data read from the optical disc 11 and an external interface 10 for exchanging data with an external host computer.
[0027]
That is, the buffer 9 functions as a packet storage means for dividing and storing data supplied from the outside (host computer) into packets having a predetermined data length.
[0028]
Further, the controller 8 or the like forms a track on an information recording medium capable of data recording of a plurality of packets stored in the packet storage means and continuously writes the packets, and writing by the packet writing means Sometimes, it functions as a writing control means for starting writing of the next packet following the end of writing of one packet.
[0029]
Further, the controller 8 or the like also functions as the following means (1) to (10).
(1) When a packet write error is detected, it is determined whether or not there is an unwritten packet in the packet storage means excluding the packet with the write error.
[0030]
(2) Unwritten packet writing means for writing an unwritten packet to a predetermined area of the information recording medium when it is determined by the unwritten packet presence / absence determining means that there is an unwritten packet.
(3) Write error report output means for outputting an error report to the outside (host computer) after writing by an unwritten packet writing means
[0031]
(4) Error report output means for outputting an error report to the outside when a packet write error is detected
(5) When a write end request issued from the outside (host computer) is received after the error report is output by the error report output means, whether or not there is an unwritten packet in the packet storage means excluding the packet in which the write error has occurred Means for determining whether there is an unwritten packet
[0032]
(6) Unwritten packet writing means for writing an unwritten packet to a predetermined area of the information recording medium when it is determined by the unwritten packet presence / absence means that there is an unwritten packet.
[0033]
(7) When the unwritten packet presence / absence determining unit determines that there is an unwritten packet, the determining unit determines whether or not data is stored to the end in the unwritten packet.
[0034]
(8) When it is determined by the determining means that data has been stored to the end of the packet, the unwritten packet is written in a predetermined area of the information recording medium, and it is determined that the data has not been stored to the end of the packet. If not, unwritten packet writing and writing error report output means for outputting a write error report to the outside without writing the packet in a predetermined area of the information recording medium
[0035]
(9) When it is determined by the determining means that data has been stored to the end of the packet, the unwritten packet is written in a predetermined area of the information recording medium, and it is determined that the data has not been stored to the end of the packet. Unwritten packet writing means for writing dummy data into a predetermined area of the information recording medium after filling the remaining area in the packet
[0036]
(10) When it is determined by the determining means that data has been stored to the end of the packet, the unwritten packet is written in a predetermined area of the information recording medium, and it is determined that the data has not been stored to the end of the packet. If not, an unwritten packet writing means for receiving the remaining data from the outside (host computer), filling the remaining area in the packet, and writing it in a predetermined area of the information recording medium
[0037]
FIG. 2 is a diagram showing a format of a re-recordable compact disc medium as an example of the optical disc 11 shown in FIG.
On this re-recordable compact disc medium, an area (Power Calibration Area: PCA) 21 for performing test recording and adjusting laser power, and intermediate recording for temporarily storing track table information An area (Program Memory Area: PMA) 22, a table of contents information (Table of Contents: TOC) such as a head address and an end address of the track, and a track 24 for recording user information. , There is a lead-out area 25. The track 24 is divided into a pre-gap 26 in which information of the track itself is recorded and user data 27 in which user information is recorded.
[0038]
FIG. 3 is a diagram showing a format example of a packet which is a recording unit of the re-recordable compact disc medium shown in FIG.
The packet 31 starts with a link block 32 and a run-in block 33 and ends with a run-out block 35.
User data 34 exists between the run-in block 33 and the run-out block 35.
[0039]
Next, packet recording processing according to claims 1 and 6 of the present invention in this optical disk recording apparatus will be described.
In this packet recording process, the controller 8 divides data supplied from the outside into packets having a predetermined data length and stores them in a buffer, forms a track on an information recording medium capable of data recording, and stores the data. Then, a control process for continuously writing a plurality of packets at the end of writing of one packet is performed while starting writing of the next packet.
[0040]
In addition, when a write error of the packet is detected, it is determined whether or not there is an unwritten packet other than a packet in which a write error has occurred in the packet stored in the buffer, and it is determined that there is an unwritten packet. At this time, the unwritten packet is written in a predetermined area of the information recording medium, and after the writing, a control process for outputting an error report to the outside is performed.
[0041]
FIG. 4 is a flowchart showing packet recording processing according to claims 1 and 6 of the present invention in the optical disk recording apparatus shown in FIG.
When the controller 8 receives a packet write request from the host computer in step (indicated by “S” in the figure) 1, it records the packet in step 2, and when step 3 detects a write error during packet recording, In step 4, the buffer is checked and it is determined whether or not there is an unrecorded packet (data of an unwritten packet) except for a packet in which a write error has occurred in the buffer.
[0042]
If it is determined in step 4 that there is no unrecorded packet, the process proceeds to step 6 and an error report is output to the host computer as it is. If there is an unrecorded packet, the process proceeds to step 5 and the unrecorded packet is placed in a predetermined area on the optical disk. Then, in step 6, an error report is output to the host computer, and this packet recording process is terminated.
[0043]
FIG. 5 is an explanatory diagram showing the relationship between the buffer 9 and the data on the optical disc 11 during the packet recording process shown in FIG.
Here, as an example, a case of random recording in which data recording is performed at random in units of packets using fixed-length packets will be described.
[0044]
When a write error occurs during recording of the packet 41, conventionally, the unrecorded packet 42 in the buffer 9 is not recorded, but an error is reported to the host computer and the writing process is terminated.
[0045]
On the other hand, in the packet recording process shown in FIG. 4, as shown in FIG. 5A, the packet 41 in the buffer is recorded in a predetermined area on the optical disc as shown in FIG. If a write error occurs during recording of the packet 42 in the predetermined area of the optical disk, the data of the unrecorded packet 43 existing in the buffer 9 is transferred to the predetermined area on the optical disk as shown in FIG. After recording, an error report is sent to the host computer, and the writing process is terminated.
[0046]
In this way, when a packet write error occurs, the data of the unwritten packet excluding the error packet in the buffer is recorded on the optical disc, and then an error report is sent to the host computer, so that the packet with the write error is recorded. It is possible to prevent the subsequent unwritten packet data from becoming invalid without being recorded on the optical disk.
[0047]
In addition, when performing retry processing of writing on the host computer side, the host computer does not perform useless processing of transferring again the data transferred by all the write requests made following the write request of the packet in which the write error has occurred. Therefore, data recording can be performed efficiently.
[0048]
Next, packet recording processing according to claims 2 and 7 of the present invention in this optical disk recording apparatus will be described.
Unlike the packet recording process described above, unwritten packets are not recorded when a write error is detected, but unwritten packets are recorded based on a write end request issued after an error report to the host computer. May be.
[0049]
In this packet recording process, when the controller 8 detects a packet write error, it outputs an error report to the outside, and when it receives a write end request issued from the outside after the output, it has already been stored in the buffer. It is determined whether or not there is an unwritten packet other than a packet in which a write error has occurred, and when it is determined that there is an unwritten packet, a control process of writing the unwritten packet to a predetermined area of the information recording medium is performed. Do.
[0050]
FIG. 6 is a flowchart showing packet recording processing according to claims 2 and 7 of the present invention in the optical disc recording apparatus shown in FIG.
When the controller 8 receives a packet write request from the host computer at step (indicated by “S” in FIG. 11), the controller 8 records the packet at step 12, and when it detects a write error during packet recording at step 13, In step 14, an error report is output to the host computer, and in step 15, the packet recording process is temporarily terminated.
[0051]
Then, when a packet recording end request is received from the host computer in step 16, whether or not there is an unrecorded packet (unwritten packet data) excluding a packet in which writing error has occurred in the buffer in step 17 is checked. to decide.
[0052]
If there is no unrecorded packet as determined in step 17, the packet recording process is terminated as it is. If there is an unrecorded packet, the process proceeds to step 18 to record the unrecorded packet in a predetermined area on the optical disk. Exit.
[0053]
In this way, when a packet write error occurs, an error report is sent to the host computer, and when a write end request is received from the host computer, the data of the unwritten packet excluding the error packet in the buffer is recorded on the optical disc. As a result, it is possible to prevent the data of the unwritten packet following the packet having the write error from becoming invalid without being recorded on the optical disc.
[0054]
In addition, when performing retry processing of writing on the host computer side, the host computer does not perform useless processing of transferring again the data transferred by all the write requests made following the write request of the packet in which the write error has occurred. Therefore, data recording can be performed efficiently.
[0055]
Next, packet recording processing according to claims 3 and 8 of the present invention in this optical disk recording apparatus will be described.
In the packet recording process described above, when a write error occurs, there may be data in the unwritten packet existing in the buffer only halfway through the packet. If such an incomplete packet is written on the optical disc as it is, an illegal optical disc is produced.
Therefore, in this packet recording process, the creation of an illegal optical disc is prevented.
[0056]
In this packet recording process, when the controller 8 detects a packet write error, the controller 8 determines whether there is an unwritten packet other than the packet that has been written error in the packets already stored in the buffer. When it is determined that there is a packet, it is determined whether or not data is stored to the end in the unwritten packet. When it is determined that data is stored to the end in the packet, the data is not stored. Write a write packet to a predetermined area of the information recording medium, and if it is determined that no data is stored until the end of the packet, write the packet to the outside without writing the packet to the predetermined area of the information recording medium. Is output. The information recording method characterized by the above-mentioned.
[0057]
FIG. 7 is a flowchart showing packet recording processing according to claims 3 and 8 of the present invention in the optical disk recording apparatus shown in FIG.
When the controller 8 receives a packet write request from the host computer at step (indicated by “S” in the figure) 21, the controller 8 records the packet at step 22, and when step 23 detects a write error during packet recording, In 24, the buffer is checked to determine whether or not there is an unrecorded packet (data of an unwritten packet) excluding a packet in which a write error has occurred in the buffer.
[0058]
If it is determined in step 24 that there is no unrecorded packet, the process proceeds to step 27 and an error report is output to the host computer as it is. If there is an unrecorded packet, the process proceeds to step 25 and data is stored up to the end of the unrecorded packet. It is judged whether it is done.
[0059]
If it is determined in step 25 that data has not been stored up to the end of the unrecorded packet, the unrecorded packet is not recorded on the optical disc, and the process returns to step 24 to repeat the above processing for the next unrecorded packet.
[0060]
If it is determined in step 25 that the data has been stored up to the end of the unrecorded packet, the process proceeds to step 26 to record the unrecorded packet in a predetermined area on the optical disk, and the process returns to step 24 to perform the above-described process. Repeating the above process for all unrecorded packets, an error report is output to the host computer in step 27, and the packet recording process is terminated.
[0061]
In this way, when a packet write error is detected, unrecorded packets in which data has been sent only halfway are not written to the optical disc, so that an illegal optical disc can be prevented from being produced.
[0062]
Next, packet recording processing according to claims 4 and 9 of the present invention in this optical disk recording apparatus will be described.
Slightly different from the packet recording process described above, incomplete packets in which data is stored only halfway may be filled with dummy data and recorded as complete packets.
[0063]
In this packet recording process, when the controller 8 detects a packet write error, the controller 8 determines whether there is an unwritten packet other than the packet that has been written in the packets already stored in the buffer. When it is determined that there is data stored to the end in the unwritten packet, it is determined that data has been stored to the end in the packet. When a packet is written to a predetermined area of the information recording medium and it is determined that no data is stored until the end of the packet, dummy data is filled in the remaining area of the packet and then the predetermined area of the information recording medium is filled. Write control processing.
[0064]
FIG. 8 is a flowchart showing packet recording processing according to claims 4 and 9 of the present invention in the optical disk recording apparatus shown in FIG.
When the controller 8 receives a packet write request from the host computer at step (indicated by “S” in the figure) 31, it records the packet at step 32, and when step 33 detects a write error during packet recording, In 34, the buffer is checked to determine whether or not there is an unrecorded packet (data of an unwritten packet) except the packet in which a write error has occurred in the buffer.
[0065]
If it is determined in step 34 that there is no unrecorded packet, the process proceeds to step 38 and an error report is output to the host computer as it is. If there is an unrecorded packet, the process proceeds to step 35 and data is stored up to the end of the unrecorded packet. It is judged whether it is done.
[0066]
If it is determined in step 35 that data has been stored up to the end of the unrecorded packet, the process proceeds to step 37 to record the unrecorded packet in a predetermined area on the optical disc, and the process returns to step 34 to return to the next unrecorded packet. The above processing is repeated for the packet.
[0067]
If it is determined in step 35 that the data has not been stored up to the end of the unrecorded packet, the process proceeds to step 36, where the remaining area in the unrecorded packet is filled with dummy data, and the process proceeds to step 37, where the unrecorded packet is stored. Recording is performed in a predetermined area on the optical disk, and the process returns to the process of step 34 to repeat the above process for the next unrecorded packet.
[0068]
In this way, when the above-described processing is completed for all unrecorded packets and there are no unrecorded packets as determined in step 34, the process proceeds to step 38 to output an error report to the host computer, and this packet recording process is terminated.
[0069]
In this way, when a packet write error is detected, an unrecorded packet in which data has been sent only halfway is written on the optical disk by filling the remaining area of the unrecorded packet with dummy data. Can prevent you from making.
[0070]
Next, packet recording processing according to claims 5 and 10 of the present invention in this optical disk recording apparatus will be described.
Slightly different from the packet recording process described above, in the case of an incomplete packet in which data is stored only halfway, the remaining data is received from the host computer, and the remaining area is filled with that data to form a complete packet. Recording may be performed.
[0071]
In this packet recording process, when the controller 8 detects a packet write error, the controller 8 determines whether there is an unwritten packet other than the packet that has been written in the packets already stored in the buffer. When it is determined that there is data stored to the end in the unwritten packet, it is determined that data has been stored to the end in the packet. When a packet is written in a predetermined area of the information recording medium and it is determined that no data has been stored until the end of the packet, the remaining data is received from outside and filled in the remaining area of the packet before recording the information. Control processing for writing in a predetermined area of the medium is performed.
[0072]
FIG. 9 is a flowchart showing packet recording processing according to claims 5 and 10 of the present invention in the optical disk recording apparatus shown in FIG.
When the controller 8 receives a packet write request from the host computer in step (indicated by “S” in the figure) 41, the controller 8 records the packet in step 42, and when step 43 detects a write error during packet recording, In 44, the buffer is checked to determine whether or not there is an unrecorded packet (data of an unwritten packet) excluding a packet in which a write error has occurred in the buffer.
[0073]
If it is determined in step 44 that there is no unrecorded packet, the process proceeds to step 48 and an error report is output to the host computer as it is. If there is an unrecorded packet, the process proceeds to step 45 and data is stored until the end of the unrecorded packet. It is judged whether it is done.
[0074]
If it is determined in step 45 that data has been stored up to the end of the unrecorded packet, the process proceeds to step 47, where the unrecorded packet is recorded in a predetermined area on the optical disc, and the process returns to step 44 to return to the next unrecorded packet. The above processing is repeated for the packet.
[0075]
If it is determined in step 45 that the data has not been stored up to the end of the unrecorded packet, the process proceeds to step 46 to receive the remaining data of the unrecorded packet from the host computer, and in step 47 the remaining data in the unrecorded packet is received. The area is filled and the unrecorded packet is recorded in a predetermined area on the optical disc, and the process returns to step 44 to repeat the above process for the next unrecorded packet.
[0076]
Thus, when the above-described processing is completed for all unrecorded packets and there are no unrecorded packets as determined in step 44, the process proceeds to step 48 to output an error report to the host computer, and this packet recording process is terminated.
[0077]
In this way, when a packet write error is detected, an unrecorded packet in which data has been sent only halfway is received from the host computer, and after filling the remaining area of the unrecorded packet, the optical disc Therefore, it is possible to prevent making an illegal optical disc.
[0078]
【The invention's effect】
As described above, according to the information recording apparatus and the information recording method of the present invention, when a write error occurs when data is written by the packet write method, the data of the unwritten packet stored up to that time is stored. It is possible to prevent invalidation, and it is possible to reduce the processing load of the host computer at the time of data recording because it is not necessary to perform the retry process of storing the unwritten packets again and writing them.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an optical disc recording apparatus which is an embodiment of an information recording apparatus of the present invention.
2 is a diagram showing a format of a re-recordable compact disc medium as an example of the optical disc 11 shown in FIG. 1. FIG.
3 is a diagram showing a format example of a packet which is a recording unit of the re-recordable compact disc medium shown in FIG. 2. FIG.
4 is a flowchart showing packet recording processing according to claims 1 and 6 of the present invention in the optical disc recording apparatus shown in FIG. 1; FIG.
5 is an explanatory diagram showing a relationship between the buffer 9 and data on the optical disc 11 during the packet recording process shown in FIG. 4;
6 is a flowchart showing packet recording processing according to claims 2 and 7 of the present invention in the optical disc recording apparatus shown in FIG. 1; FIG.
FIG. 7 is a flowchart showing packet recording processing according to claims 3 and 8 of the present invention in the optical disc recording apparatus shown in FIG. 1;
FIG. 8 is a flowchart showing packet recording processing according to claims 4 and 9 of the present invention in the optical disc recording apparatus shown in FIG. 1;
FIG. 9 is a flowchart showing packet recording processing according to claims 5 and 10 of the present invention in the optical disc recording apparatus shown in FIG. 1;
[Explanation of symbols]
1: Motor 2: Coarse motor
3: Optical pickup 4: Rotation control system
5: Coarse motor control system 6: Pickup control system
7: Signal processing system 8: Controller
9: Buffer 10: External interface
21: PCA 22: PMA
23: Lead-in area
24: Track 25: Lead-out area
26: Pre-gap 27: User data
31, 41, 42: packet
32: Link block 33: Run-in block
34: User data 35: Run-out block
43: Unrecorded packet

Claims (10)

A packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a plurality of packets stored in the means are continuously formed by forming a track on an information recording medium capable of recording data In an information recording apparatus comprising: a packet writing means for automatically writing; and a writing control means for starting writing of the next packet following the end of writing of one packet when writing by the means;
An unwritten packet presence / absence determining means for determining whether or not there is an unwritten packet other than a packet having a write error in the packet storage means when detecting a write error of the packet;
When it is determined by the means that there is an unwritten packet, an unwritten packet writing means for writing the unwritten packet to a predetermined area of the information recording medium, and an error report is output to the outside after writing by the means An information recording apparatus comprising a writing error report output means. A packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a plurality of packets stored in the means are continuously formed by forming a track on an information recording medium capable of recording data In an information recording apparatus comprising: a packet writing means for automatically writing; and a writing control means for starting writing of the next packet following the end of writing of one packet when writing by the means;
An error report output means for outputting an error report to the outside when the packet write error is detected;
Whether or not there is an unwritten packet in the packet storage means to determine whether or not there is an unwritten packet except for a packet that has failed to be written when an externally issued write end request is received after outputting an error report by the means Judgment means,
An information recording apparatus comprising: an unwritten packet writing means for writing an unwritten packet to a predetermined area of the information recording medium when it is determined by the means that there is an unwritten packet. A packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a plurality of packets stored in the means are continuously formed by forming a track on an information recording medium capable of recording data In an information recording apparatus comprising: a packet writing means for automatically writing; and a writing control means for starting writing of the next packet following the end of writing of one packet when writing by the means;
An unwritten packet presence / absence determining means for determining whether or not there is an unwritten packet other than a packet having a write error in the packet storage means when detecting a write error of the packet;
Means for determining whether data is stored to the end in the unwritten packet when it is determined by the means that there is an unwritten packet;
When it is determined by the means that data has been stored to the end of the packet, the unwritten packet is written to a predetermined area of the information recording medium, and it is determined that no data has been stored to the end of the packet. And an unwritten packet writing and writing error report output means for outputting a write error report to the outside without writing the packet in a predetermined area of the information recording medium. . A packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a plurality of packets stored in the means are continuously formed by forming a track on an information recording medium capable of recording data In an information recording apparatus comprising: a packet writing means for automatically writing; and a writing control means for starting writing of the next packet following the end of writing of one packet when writing by the means;
An unwritten packet presence / absence determining means for determining whether or not there is an unwritten packet other than a packet having a write error in the packet storage means when detecting a write error of the packet;
Means for determining whether data is stored to the end in the unwritten packet when it is determined by the means that there is an unwritten packet;
When it is determined by the means that data has been stored to the end of the packet, the unwritten packet is written to a predetermined area of the information recording medium, and it is determined that no data has been stored to the end of the packet. And an unwritten packet writing means for filling the remaining area in the packet with dummy data and then writing to the predetermined area of the information recording medium. A packet storage means for dividing and storing data supplied from the outside into packets having a predetermined data length, and a plurality of packets stored in the means are continuously formed by forming a track on an information recording medium capable of recording data In an information recording apparatus comprising: a packet writing means for automatically writing; and a writing control means for starting writing of the next packet following the end of writing of one packet when writing by the means;
An unwritten packet presence / absence determining means for determining whether or not there is an unwritten packet other than a packet having a write error in the packet storage means when detecting a write error of the packet;
Means for determining whether data is stored to the end in the unwritten packet when it is determined by the means that there is an unwritten packet;
When it is determined by the means that data has been stored to the end of the packet, the unwritten packet is written to a predetermined area of the information recording medium, and it is determined that no data has been stored to the end of the packet. And an unwritten packet writing means for receiving the remaining data from the outside and filling it in the remaining area in the packet and writing it in a predetermined area of the information recording medium. . Data supplied from the outside is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are written at the end of writing one packet. In the information recording method of continuously writing while starting the writing of the next packet,
When a write error of the packet is detected, it is determined whether or not there is an unwritten packet other than a packet with a write error in the stored packet. When it is determined that there is an unwritten packet, the unwritten packet An information recording method comprising writing a packet to a predetermined area of the information recording medium and outputting an error report to the outside after the writing. Data supplied from the outside is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are written at the end of writing one packet. In the information recording method of continuously writing while starting the writing of the next packet,
When a write error of the packet is detected, an error report is output to the outside. When a write end request issued from the outside is received after the output, an unwritten packet excluding the write error packet in the stored packet An information recording method characterized in that it is determined whether or not there is a packet, and when it is determined that there is an unwritten packet, the unwritten packet is written in a predetermined area of the information recording medium. Data supplied from the outside is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are written at the end of writing one packet. In the information recording method of continuously writing while starting the writing of the next packet,
When a write error of the packet is detected, it is determined whether or not there is an unwritten packet other than a packet with a write error in the stored packet. When it is determined that there is an unwritten packet, the unwritten packet Whether or not data is stored to the end of the packet, and when it is determined that data is stored to the end of the packet, the unwritten packet is written to a predetermined area of the information recording medium. When it is determined that no data is stored until the end of the packet, a write error report is output to the outside without writing the packet in a predetermined area of the information recording medium. Data supplied from the outside is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of recording data, and the plurality of stored packets are written at the end of writing one packet. In the information recording method of continuously writing while starting the writing of the next packet,
When a write error of the packet is detected, it is determined whether or not there is an unwritten packet other than a packet with a write error in the stored packet. When it is determined that there is an unwritten packet, the unwritten packet Whether or not data is stored to the end of the packet, and when it is determined that data is stored to the end of the packet, the unwritten packet is written to a predetermined area of the information recording medium. When it is determined that no data is stored until the end of the packet, dummy data is filled in the remaining area in the packet and then written in the predetermined area of the information recording medium . Data supplied from the outside is divided into packets having a predetermined data length and stored, a track is formed on an information recording medium capable of data recording, and the plurality of stored packets are written at the end of writing one packet. In the information recording method for continuously writing while starting the writing of the next packet in succession, when a write error of the packet is detected, there is an unwritten packet other than the packet in which the write error is included in the stored packet. When it is determined that there is an unwritten packet, it is determined whether data is stored to the end in the unwritten packet, and data is stored to the end in the packet. When it is determined that the unwritten packet is written in a predetermined area of the information recording medium, When it is determined that no data has been stored to the end, the remaining data is received from the outside, filled in the remaining area in the packet, and then written to a predetermined area of the information recording medium Method.

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