JPH1196679A - Optical disk recording device - Google Patents

Abstract

(57) [Summary] An object of the present invention is to monitor a buffer memory in a write-once optical disc recording device, automatically perform a recovery process when recording fails, and allow a user to perform additional recording without performing a recovery process. SOLUTION: An optical disk recording apparatus 1 is provided from a host 101.
02 is monitored, and when the recording data in the buffer memory 108 becomes smaller than a certain number during recording on the optical disc, Run-out1 and Run-out1 are performed.
Run-out1, Ru automatically generated when the out2 block is automatically generated and all the recording data is lost.
By recording the n-out2 blocks on the optical disc and ending the recording in the same manner as when the recording is normally completed, the user can additionally record on the optical disc without performing the recovery process.

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, and more particularly to an error processing during data recording.

[0002]

2. Description of the Related Art In a CD-WO (write-once) optical disk recording apparatus, when recording data transferred from a host computer is recorded, the processing speed of the host computer is usually higher than the recording processing of the optical disk recording apparatus. Recording data in the buffer memory of the optical disk recording device will not be emptied during recording, but there are various types of host computers. The transfer speed of the recording data of the host computer may not be able to keep up. The optical disk recording device that has started recording on the optical disk records all the data recorded in the buffer memory on the optical disk, and if the recording data is not continuously transferred from the host computer, the data to be added is not in the buffer memory. However, there has been no choice but to stop recording on the optical disk and report the stop information to the host computer.

FIG. 1 shows a configuration in which a host computer 101 and an optical disk recording device 102 are connected by an interface bus 103.
5, the recording data is created using the optical disk recording apparatus 1 via the bus 103 from the interface control unit 104.
The write command and the recording data are transferred to the interface control unit 107 of No. 02. The recording data is stored in the buffer memory 108, sent from the buffer memory 108 to the disk recording control unit 110 by the buffer control unit 109, and recorded on the optical disk 111.

FIG. 5 shows a flowchart of data processing in a conventional optical disk recording apparatus. The conventional data processing will be described with reference to FIGS. In step S101, when a plurality of write commands and recording data transferred from the host computer 101 are received, the control CPU 203 of the buffer control unit 109 manages the recording data in the buffer memory 108 and stores the data in the buffer memory 108. In step S102, if the command received from the host computer 101 is the synchronized cache command indicating that the recording on the optical disc is the last, the process proceeds to step S102.
At 107, all the data stored in the buffer memory 108 is recorded on the optical disc 111, and the next S108
Then, Run-out1 and Ru are executed after the last recording data.
Record n-out2 blocks.

If the command received from the host computer 101 is a write command, the recording data is stored in the buffer memory 108, and if the recording data in the buffer memory 108 is full, recording on the optical disk 111 is started (S105). . At this time, the control CPU 203 transfers the data recorded in the buffer memory 108 to the optical disk 111.
While recording the next write command. In S104, when all the recording data in the buffer memory is exhausted before receiving the synchronization cache command indicating that it is the last command of recording, in S106, the host computer 1
01, it reports that the recording has failed and ends the recording.

[0006] In the above-described continuous recording, a recording error in a case where the recording data in the buffer memory is completely lost and the recording is interrupted and recording on the optical disk cannot be continued is generally called a buffer underrun error. The optical disk recording device stops recording data and reports information such as the reason for stopping to the host computer.
At this time, since the optical disc has been completed at the point when the recording data of all the recording data to be transferred from the host computer stored in the buffer memory has been recorded halfway, the recording is normally completed. Are completed without recording two blocks that can be referred to as additional marks, such as Run-out1 and Run-out2 blocks. For this reason, the optical disk is no longer in a state where additional recording is possible. Run-out1, Run-out2
These two blocks are collectively referred to as a run-out block, and the run-out block is a mark for additional recording defined by the standard. At the time of the additional recording operation, the joint is recorded so that the already recorded data portion and the data portion to be additionally recorded are overlapped, so that data of several overlapping blocks is destroyed. In order to prevent the recording data from being destroyed at the time of additional recording, a Run-out block is provided before the recording data and recorded on the optical disk.

Due to an error such as a buffer underrun,
When trying to record data again on the optical disc on which data recording has been stopped, the user first issues a repair track command from the host computer to the optical disc so that the optical disc recording device can be added to the optical disc. I have to recover. In the configuration of the host computer and the optical disk recording apparatus shown in FIG. 1, the repair track command is a state in which recording data transferred from the host computer is being recorded on the optical disk, and recording on the optical disk is interrupted due to a buffer underrun error or the like. If the data has been lost, the user issues a repair track command from the host computer to the optical disk recording device, and the optical disk recording device sends a few blocks of dummy data after the last recorded data on the optical disk whose recording has been interrupted. And Run-out
1. Run-out 2 blocks are added and recorded, and a mark for additional writing is added. As a result of this optical disk recovery process, a run-out block is added and the state becomes the same as when recording is normally completed, and additional recording is possible. In the repair track command, Run-out1, Ru are directly added to the last recording data of the optical disc.
When n-out2 blocks are recorded, the run-o
Since the ut1 block is crushed and cannot be read, several blocks of dummy data and Run-out1 and Run-out
Additional information is added together with the t2 block. With this, Run
-Out1 block can be read, but by adding several blocks of dummy data, an extra block that should not exist originally is recorded, complicating the management of the additional write address.

[0008]

In the conventional repair track command, after recording on the optical disk is completed, the optical disk recording device receives a command from the host computer and recovers the optical disk. This repair track command processing is performed on an optical disc that has been completed during recording due to a buffer underrun error or the like.
Following the last recorded data, Run-out1, Run-out1
Out2 block is added, but the joint part of additional writing is
Since the data is recorded so as to overlap the already recorded user data, the run-out 1 block at the joint cannot be read when the optical disk is read due to the collapse of the data.
ut1 and Run-out2 blocks had to be additionally written. As a result, the Run-out1 block can be read, but by adding several blocks of dummy data, an extra block that should not exist originally is recorded, and the management of the additional write address becomes complicated. There was a problem.

Further, since a recording seam is formed several blocks before the run-out block, there is a possibility that a seek operation at the time of reading may fail. At the end of the normal recording operation, the run-out block exists at the joint of the recording. Therefore, the seek processing of the additional write address is executed targeting the Run-out block. On the other hand,
The Run-out block does not exist at the original joint, and the Run-out block is arranged after the dummy data to be added. Therefore, it is difficult to set a target when detecting an added address, and there is a risk of erroneous detection. In addition, in these recovery processes, it is necessary to execute a series of recording procedures such as setting dummy data for recovery in a buffer memory of an optical disc recording device, detecting a seam of recording, and starting the recording process. The process required time and effort.

[0010]

In order to solve the above-mentioned problems, an optical disk recording apparatus of the present invention has an interface for transferring information to and from a host computer, and stores data transferred from the host computer. An optical disk recording device for storing data transferred from the host computer in the buffer memory, and then recording the stored data on an optical disk, while the data is being sequentially recorded on the optical disk. When the data stored in the buffer memory is less than a predetermined amount,
A run-out block serving as a postscript mark is automatically generated in the buffer memory, and when all the stored data to be recorded on the optical disk is exhausted in the buffer memory, the optical disk recording device automatically generates the run-out block. The run-out block is recorded at the end of the data.

According to the present invention, the recording can be completed in a recordable state without executing the repair track command which is the recovering process on the optical disk for which the recording has failed, and the user does not need to bear a load.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical disk recording apparatus according to a first aspect of the present invention comprises an interface for transferring information to and from a host computer, and a buffer memory for storing data transferred from the host computer. An optical disc recording apparatus having, after storing data transferred from the host computer in the buffer memory, recording the stored data on an optical disc,
While data is being sequentially recorded on the optical disk, if the amount of data stored in the buffer memory becomes smaller than a predetermined amount, Ru as an additional recording mark is used.
An n-out block is automatically generated in the buffer memory, and when all the stored data to be recorded on the optical disk are exhausted from the buffer memory, the Run generated automatically by the optical disk recording apparatus for the optical disk.
-Recording of an out block at the end of the data, without performing a repair track command as a recovery process on the optical disc for which recording has failed, and ending the recording in a recordable state. And no burden is imposed on the user.

Next, in the optical disk recording apparatus according to the present invention, after recording the Run-out block at the end of the data, a signal indicating a recording error is sent to the host computer. It is characterized in that it can be re-recorded on an optical disc for which recording has failed without performing a recovery process, the error content can be known, and a reliable additional recording process can be performed.

(Embodiment) An embodiment of the present invention described in claim 1 of the present invention will be described below with reference to FIGS. 1, 2, 3, and 4. FIG.

FIG. 2 shows a detailed block diagram of the buffer control unit 109. Reference numeral 201 denotes an address bus, and reference numeral 202 denotes a data bus. Each component is connected to a buffer memory. The control CPU 203 of the buffer memory 108
The host computer 101 controls transfer of recording data, counts the number of transfer data, manages recording data in the buffer memory 108, monitors the free space in the buffer memory 108, and issues a recording instruction to the disk recording control unit 110. The block counter 204 stores the number of blocks of recording data of the write command received from the host computer 101. The counter 205 stores transfer time data of the recording data measured by the timer 206. The counter 205 can store a plurality of measured values.

FIG. 3 shows a configuration of a write command received by the optical disk recording apparatus from the host computer 101, and comprises a write command section 301 and a recording data section 302. The number of blocks of recording data to be transferred is recorded in the write command 301, and it can be seen that the recording data group 302 of X blocks is transferred from the host computer 101 following the write command. Normal recording is performed by a plurality of write commands because the main memory capacity of the host computer is limited. Control CP of buffer memory 108
U203, when receiving the write command 301 from the host computer 101, the number of blocks X of the recording data
Is stored in the block counter 204. Control CPU 20
3 performs recording on the optical disk 111 while checking the recording data capacity of the buffer memory 108. Control CPU
Reference numeral 203 denotes a Run-out block for recording a Run-out block without a gap next to the data recorded on the optical disk 111 when the recording data in the buffer memory 108 becomes small, for example, when the last one block is reached.
The out1 and Run-out2 blocks 303 are stored after the last record data in the buffer memory 108.

FIG. 4 is a flowchart showing the flow of data processing after recording data is transferred from the host computer 101 to the optical disk recording apparatus according to the embodiment of the present invention. In recording data from the optical disc recording device 102 to the optical disc 111, normally, a plurality of write commands for transmitting the number of blocks necessary for recording are transferred from the host computer 101 from the first write command, and the last command of the recording is used. A synchronization cache command indicating that there is an instruction is issued, and all the recording data stored in the buffer memory 108 of the optical disk recording device 102 is recorded on the optical disk 111.

In S201, the optical disk recording device 1
When 02 receives a plurality of write commands and subsequent recording data from the host computer 101, the control CPU 203 of the buffer control unit 109 manages the recording data in the buffer memory 108 and stores it in the buffer memory 108. In step S202, if the command received from the host computer 101 is a synchronized cache command indicating the last command of recording on the optical disc, the process proceeds to step S202.
At 210, all the data stored in the buffer memory 108 is recorded on the optical disc 111, and at the next S211 following the last recorded data, Run-out1, Run-out1 are performed.
Record out2 block.

If the command received from the host computer 101 is a write command, the recording data is stored in the buffer memory 108. If the recording data in the buffer memory 108 is full, recording on the optical disk 111 is started in S206. At this time, the control CPU 20
Reference numeral 3 denotes an optical disc 1 which stores the data recorded in the buffer memory 108.
While recording the data at 11, the reception of the next write command is also monitored.

In S204, if all the recording data in the buffer memory is exhausted before receiving the synchronization cache command indicating that it is the last command of recording, in S207, the remaining recording data becomes one block in advance. The Run-out 1 and Run-out 2 blocks stored in the buffer memory 108 at the time of
At 9, the host computer 101 is notified that the recording has failed, and the recording is terminated. However, the optical disk 111 is in the same state as when the recording has been completed normally. That is, the error recovery process is performed and an error is returned to the host computer 101, so that the error countermeasure process can be easily performed. When the recording data of the buffer memory 108 becomes smaller than a certain amount, the control CPU 203 executes Run-out1, Ru
After storing the n-out2 block after the last record data in the buffer memory 108, the host computer 1
When a write command and recording data continued from 01 are received, the stored Run-out1 and Run-out2 are stored.
Since the block is not required, Ru is determined in S206.
The recording data received from the host computer 101 is stored in the buffer memory 108 so as to overwrite the position where the n-out1 and Run-out2 blocks are stored, and recording is continued as usual. Similarly, Run-out1, Ru
When the synchronized cache command is received from the host computer 101 after preparing the n-out2 block, in step S211 the run-out1 and the run-run1, which have been stored following the data recorded in the buffer memory, are stored.
-Out2 blocks are recorded on the optical disc 111, and the process ends.

[0021]

As described above, according to the optical disk recording apparatus and method of the present invention, when the recording data in the buffer memory becomes small during recording on the optical disk, the Run
-Out block is prepared, and when the recording proceeds and all the recording data in the buffer memory is exhausted,
By recording the prepared Run-out block on the optical disk and reporting the recording failure to the host computer, the optical disk recording device has performed a repair track command. The user can perform recording again on the optical disk for which recording has failed without performing recovery processing. Also, the optical disk recording device is a Run-
When the write command and the recording data are transferred from the host computer after preparing the out block, the recording data is overwritten and saved in the portion of the buffer memory where the Run-out block is recorded, and the recording can be continued as usual. Good. When the recording data in the buffer memory is recorded on the optical disc and all the data is lost, if the user intends to issue a synchronizing cache command, the optical disc recording apparatus stores the Run-out block after the recording data. Therefore, it is only necessary to record it on the optical disk, and the synchronization cache command is executed in advance, which is the same as the end of normal recording, and post-processing at the time of recording error can be automated.

[Brief description of the drawings]

FIG. 1 is an overall block diagram of an optical disc recording apparatus according to an embodiment of the present invention.

FIG. 2 is a detailed block diagram of a buffer memory control unit of the optical disc recording device according to the embodiment of the present invention.

FIG. 3 is a diagram schematically showing a configuration of a command used for transferring recording data of the optical disc recording apparatus of the present invention and the contents of a buffer memory;

FIG. 4 is a flowchart showing recording data processing of the optical disc recording apparatus according to the embodiment of the present invention;

FIG. 5 is a flowchart showing processing of recording data of an optical disk recording device according to a conventional embodiment.

[Explanation of symbols]

 107 Interface control unit 108 Buffer memory 109 Buffer control unit 110 Disk recording control unit 203 Control CPU 204 Block counter 205 Counter 206 Timer

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G11B 20/18 572 G11B 20/18 572F 572C

Claims (2)

[Claims] An interface for transferring information to and from a host computer, and a buffer memory for storing data transferred from the host computer, wherein the data transferred from the host computer is stored in the buffer memory. After storing, in an optical disk recording device that records the stored data on an optical disk,
While data is being sequentially recorded on the optical disk, if the amount of data stored in the buffer memory becomes smaller than a predetermined amount, Ru as an additional recording mark is used.
An n-out block is automatically generated in the buffer memory, and when all the stored data to be recorded on the optical disk are exhausted from the buffer memory, the Run generated automatically by the optical disk recording apparatus for the optical disk.
An optical disk recording apparatus, wherein an out block is recorded at the end of the data. 2. The optical disk recording apparatus according to claim 1, wherein a signal indicating a recording error is returned to a host computer after recording the Run-out block at the end of the data.