JPH11175383A - Data recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the recording contents of a recording medium from being destroyed owing to an unexpected situation in a data recording process by recording on the recording medium data for restoring the recording medium to the state right before file management information of the recording medium is recorded or its normal state right before the data recording medium. SOLUTION: When a magnetooptic disk is initialized, an IPL recording area 20, etc., is generated. To record the data for restoration, a backup file recording area 25 is generated at the head of a waveform data recording area 29. Further, the backup file recording area 25 is composed of a new FAT recording area 26 for backup etc. A sector information recording area 28a, etc., to be processed is generated by an management information recording area 28. File information regarding a backup file is recorded in the directory information recording area 23a of the backup file in a protection area 23 of a root directory information recording area 22a, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording apparatus for recording file management information for managing a data body together with a data body in a data recording process on a recording medium.

[0002]

2. Description of the Related Art Floppy disks used in personal computers and the like, MOs (Magnet Optical Disks)
Recording media such as magneto-optical disks) and hard disks
Before recording data, it is necessary to perform initialization processing. In this initialization process, tracks and sectors for recording data are formed on the recording surface of the recording medium, and the IPL (Init) is sequentially formed from the head sector of the formed plurality of sectors.
ial Program Loader) recording area, FAT (File Allca)
An area for recording, an area for recording a duplicate FAT, an area for recording root directory information, an area for data recording, and the like are set according to the recording method and recording capacity of the recording medium.

[0003] In the IPL recording area, for example,
When the recording medium is initialized so that the personal computer can be started, a so-called boot loader for reading a starting program recorded on the recording medium into the main memory of the personal computer is recorded. Also,
The IPL recording area also exists when initialized for data recording. In this case, when the personal computer is started from the recording medium, the recording medium is initialized so that the personal computer can be started. A program is recorded for displaying on the display unit that no message has been issued or for sounding a warning sound.

On the other hand, in the FAT recording area, recording start sector numbers of files and subdirectories recorded on a recording medium, connection information of sectors when one file is recorded over a plurality of sectors, A recording end sector number of a file or a subdirectory, a sector number of an unrecorded sector, a sector number of a defective sector, and the like are recorded. In addition, in the duplicate FAT recording area, a copy of the sector information recorded in the FAT recording area is recorded in case the contents recorded in the FAT recording area are destroyed due to some abnormal situation. .

Further, in the root directory information recording area, a file name of a file recorded in the root directory, a directory name of a subdirectory created in the root directory, a file extension, a file attribute, and a file or subdirectory are stored. A directory entry is recorded which describes an update time, an update date of a file or subdirectory, a management number of the FAT recorded in the FAT recording area for the file or subdirectory, a file size, and the like. Also,
The data recording area records the data body of the file recorded on the recording medium and directory information on the created subdirectory.

[0006] Specifically, for example, when recording a file "data 1.TXT" on a recording medium, first, a FAT
After reading the sector information recorded in the recording area, an unrecorded sector is searched from the data recording area. When an unrecorded sector can be searched, the directory information of the file name is recorded. Next, the data body of “data 1.TXT” is recorded in the unrecorded sector. continue,
The file name of "data 1", the extension of "TXT", and the management number of the FAT to be recorded in the FAT recording area for "data 1.TXT" are recorded in the root directory information recording area. Next, the sector information of the sector in which the data body of “data 1.TXT” is recorded is recorded in the FAT recording area and also recorded in the duplicate FAT recording area. As a result, "data 1.TXT" is recorded on the recording medium.

Thereafter, when reading "data 1.TXT" from the recording medium, the file name "data 1.TXT" is first referred to by referring to the root directory information recording area.
"XT" is recorded on the recording medium. Next, based on the FAT management number for the file name “data 1.TXT” recorded in the root directory information recording area, the file name “data 1.TXT” recorded in the FAT recording area Read sector information. Then
The data body of "data 1.TXT" is read from the data recording area based on the read sector information. Thereby, the data body of the file name “data1.TXT” is read from the recording medium.

[0008]

However, the conventional data recording and recording apparatus has the following problems. That is, in the conventional data recording apparatus, after recording the data body of the file in the data recording area, various information about the file is recorded in the root directory information recording area, and then the sector information about the data body is recorded in the FAT recording area. Recorded in the area. Thus, when reading the data body of the file recorded on the recording medium, the root directory information recording area and the FAT
The data body of the file can be read from the data recording area based on the file management information recorded in the recording area. However, while recording the file data itself in the data recording area, and then recording file information and the like in the root directory information recording area, and recording sector information and the like in the FAT recording area, When the operation of the data recording device is stopped due to a power failure or the like, not only the file in the data recording process but also the sector information and the file information of the file already recorded before the data recording process are destroyed. Sometimes.

In such a case, for example,
Since the relationship with the sector number of the data recording area in which the data body is recorded becomes unknown, not only the data relating to the data recording process but also the data relating to the file recorded before the data recording process was performed. The main unit cannot be read. As described above, the conventional data recording process has a problem that the recorded content of the recording medium is destroyed when a power failure occurs during the data recording process. Further, even if the situation that the data body cannot be read out does not occur, the data recording area has the root directory information recording area and the FAT recording area in spite of the fact that the data body related to the data recording process is recorded. The latest file information or sector information related to the data recording process may not be recorded in the use area. In such a case, there is a problem that inconsistency occurs in data contents and the like between the recorded data body and the file management information.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-described problems, and is intended to prevent data recorded on a recording medium from being destroyed due to an unexpected situation occurring during data recording processing. The main purpose is to provide a device.

[0011]

According to a first aspect of the present invention, there is provided a data recording apparatus in which, during data recording processing on a recording medium, file management information of the recording medium is recorded immediately before the data recording processing. Restoration data for restoring the recording medium to a state immediately before the recording processing or a normal recording state to be normally recorded by the data recording processing is recorded in at least one of the recording medium and the memory in the apparatus.

According to a second aspect of the present invention, in the data recording apparatus according to the first aspect, the recording medium can be restored to a state immediately before recording processing or a normal recording state based on the restoration data. Features.

In the data recording device according to the first and second aspects,
During the data recording process on the recording medium, the restoration data is recorded on the recording medium or the memory in the apparatus. On the other hand, when an unforeseen situation such as a power failure occurs during the data recording process, the recording medium that has not completely completed the data recording process is set to the state immediately before the recording process based on the recorded restoration data. Or restore to the normal recording state. In this case, for example, when the data body is not recorded on the recording medium, the data is restored to the state immediately before the recording process, and when the data body is recorded and only the file management information is not recorded, the data is restored to the normal recording state based on the restoration data. I do. For this reason, it is possible to prevent the recorded contents of the recording medium from being destroyed.

According to a third aspect of the present invention, there is provided the data recording apparatus according to the first or second aspect, wherein the repair data includes at least file management information of a file to be recorded, and further includes a recording process for the data recording process. The data body of the target file is excluded.

The data for restoration may include a data body. On the other hand, when the restoration data is recorded on the recording medium, if the data amount of the data body is large, the data recording area of the recording medium may not be effectively used. Further, generally, the data body is stored in a data recording device that intends to record the data body on a recording medium. Therefore, there is little advantage that the data itself is included in the restoration data. In this data recording device,
Since the file management information excluding the data itself is recorded as the restoration data, even if the recording is performed in the recording medium, the restoration data should be recorded without significantly reducing the use efficiency of the data area of the recording medium. And restoration data can be recorded quickly.

According to a fourth aspect of the present invention, in the data recording apparatus according to any one of the first to third aspects, the minimum recording unit area in which repair data and file information of the repair data are recorded. Is characterized in that each attribute is a hidden file.

The repair data can be composed of a file having an attribute that can be freely read and written in the same manner as a normal file. However, the file information of the repair data may be read and erased by another data recording device such as a personal computer. In such a case, the recording medium cannot be restored using the restoration data. On the other hand, in this data recording device, since the attributes of the file data of the repair data and the file information of the repair data are hidden files, they are not read by other data recording devices, and the data for repair can be protected. It becomes possible.

According to a fifth aspect of the present invention, there is provided the data recording apparatus according to any one of the first to fourth aspects, wherein the free area of the minimum recording unit area in the data recording apparatus recording the file information of the repair data. Preferably, predetermined information different from the restoration data is recorded.

In this data recording apparatus, for example, when a floppy disk or an MO is used as a recording medium, a sector which is a minimum recording unit area for recording file information of the repair data is provided with another sector different from the repair data. Predetermined information such as dummy data is recorded. Therefore, the file information of the repair data is not rewritten when the data body is recorded during the data recording process, and the file information of the repair data can be reliably protected.

According to a sixth aspect of the present invention, in the data recording apparatus according to any one of the first to fifth aspects,
Recording the processing state information corresponding to the processing state in the data recording processing as a part of the restoration data, and restoring the recording medium to the state immediately before the recording processing or the normal recording state according to the processing state corresponding to the processing state information. Features.

In the data recording process, for example, creation of directory information for the data body, recording of the data body,
Processing such as recording of sector information in which the data body is recorded is sequentially executed. In the data recording method of the data recording apparatus, a stepwise processing state in the data recording processing is recorded as a part of the restoration data. Therefore, when data is not recorded normally due to a power failure or the like during the data recording process, the data recording device should restore the recorded content of the recording medium according to the processing state that has already been executed by the time of the power failure. Becomes possible. Specifically, based on the processing state information, for example, when it is determined that the processing has only been performed up to the creation of the directory information, the state is restored to the state immediately before the recording processing, and when it is determined that the recording of the data body is completed. , And restore to a normal recording state. For this reason, it is possible to eliminate or simplify the operation of the operator for an unexpected situation, as compared with the case where the state is uniquely restored to the state immediately before the recording process.

According to a seventh aspect of the present invention, in the data recording apparatus according to the sixth aspect, the processing state information is formed from a plurality of bit data, and a partial value of the plurality of bit data is changed to another bit. It is characterized by having a data structure different from the data value.

When the processing state information is constituted by a data structure in which the value "1" or the value "0" continues, when the power is cut off due to a power failure or the like, the processing state information is recorded in the state of the value "0". Since it is unclear whether the power has been turned off or not, it is difficult to specify at which stage of each process the power was cut off. In this data, since all of the plurality of bits are not continuous with the value “0” or “1”, when each bit of the processing state information matches all the predetermined bit data, it is determined that the processing has been performed up to that stage. It is possible to reliably specify the information, and thereby it is possible to reliably execute the subsequent repair processing.

The data recording apparatus according to claim 8 is the data recording apparatus according to any one of claims 1 to 7,
The recording of restoration data is performed on a recording medium on which predetermined identification information is recorded.

According to a ninth aspect of the present invention, in the data recording apparatus of the eighth aspect, the identification information can be recorded on a recording medium.

Although it is possible to perform restoration data recording processing on all recording media, it is possible to waste processing time if the processing is performed even on recording media on which less important data is recorded. . Claims 8 and 9
In the described data recording device, identification information is recorded in advance in accordance with the importance of the data to be recorded, so that even when the operator does not specify the execution of the restoration process, important information is recorded. It is possible to execute the automatic recording process and the restoration of the restoration data only for the recording medium on which the data is recorded.

[0027] According to a tenth aspect of the present invention, in the data recording apparatus of the ninth aspect, the identification information is stored in an IPL format.
It is characterized by recording in a recording area.

The identification information can be recorded in any storage area of the recording medium. On the other hand, with this data, since the identification information is recorded in the IPL recording area, the data recording apparatus can immediately recognize whether or not the recording medium is to be subjected to the restoration process when the recording medium is mounted. Also,
Generally, the IPL recording area cannot be rewritten unless the recording medium is initialized. Therefore, erasure of the identification information due to an erroneous operation is prevented.

A data recording device according to claim 11 is the data recording device according to any one of claims 8 to 10, further comprising a display unit, and determining whether or not identification information is recorded on the recording medium; A predetermined display corresponding to the determination result is displayed on the display unit.

In this data recording apparatus, it is determined whether or not identification information is recorded on a recording medium.
When the identification information is not recorded, a warning is given by displaying the fact on the display unit. Therefore, when recording important data, the operator can easily and reliably perceive whether or not the recorded data can be restored on the attached recording medium by checking the alarm display on the display unit. It becomes possible.

A data recording device according to a twelfth aspect is the data recording device according to any one of the first to eleventh aspects, wherein the data recording device is a measuring device that records measurement data.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a data recording device according to the present invention is applied to a waveform recording device will be described below with reference to the accompanying drawings.

First, the electrical configuration of the waveform recording device 1 will be described with reference to FIG.

As shown in FIG. 1, the waveform recording apparatus 1 includes an input signal processing unit 11 for generating waveform data DS from an input signal SIN to be recorded and outputting the waveform data DS to a CPU 12;
A PU 12 and a ROM 13 for storing an operation program such as a program for a backup process by the CPU 12,
RAM 14 and operation unit 15 on which various keys are arranged
A display unit 16 composed of an LCD panel, a cathode ray tube (CRT), etc., and a display unit 16 under the control of the CPU 12.
The printer 17 prints the signal waveform of the signal to be recorded displayed on the screen, a hard copy of the display screen, and the like, and the MO drive 18.

Here, the CPU 12 executes display control of a signal waveform based on the waveform data DS on the display section 16 and print control on the printer 17, and also controls file recording and reading processing by the MO drive 18. , And processes input of a key signal by operating various keys of the operation unit 15. The RAM 14 stores the calculation result of the CPU 12, print data to be output to the printer 17, M
The waveform data recorded by the O drive 18 and the waveform data read from the MO 2 by the MO drive 18 are temporarily stored. MO drive 18
Although not particularly limited, this embodiment is configured to be able to read from and write to a 3.5-inch magneto-optical disk (hereinafter, also referred to as MO).

As the personal computer P, a general commercially available product having a 3.5-inch MO drive can be used. By inserting MO2 initialized by a recoverable format initialization process described later into the MO drive, The waveform data and the like recorded on the MO 2 by the waveform recording device 1 can be read. On the other hand, MO2 corresponds to the recording medium in the present invention, and the waveform recording device 1
Is initialized so that it can be read by both the MO drive 18 and the personal computer P described above.

Next, with reference to FIGS. 2 and 3, a description will be given of the MO2 recoverable format initialization process and the MO2 recording area created by this process. Note that MO2
If the data to be recorded is not so important, the data can be initialized not in a recoverable format but in a normal format, and either of them can be selected. Here, a description will be given assuming that initialization in the recoverable format has been selected. The processing described below is executed by the CPU 12 according to a processing procedure program stored in the ROM 13 unless otherwise noted.

MO2 is the MO drive 1 of the waveform recording device 1.
8, the MO2 is initialized in a predetermined initialization format (step 31). As a result, tracks and sectors corresponding to the initialization format are formed on the recording surface of the MO2, and as shown in FIG.
0, FAT recording area 21a, duplicate FAT recording area 2
1b, a root directory information recording area 22a and a waveform data recording area 29 are created. At this time, the backup file recording area 25 shown in FIG.
Is created as the waveform data recording area 29. Next, identification information indicating that the recording medium has been initialized in a recoverable format is recorded in the created IPL recording area 20 (step 32). Next, a backup file for recording the repair data is created in the root directory (step 33). Thereby, as shown in FIG. 3, the backup file recording area 25 is created at the head of the waveform data recording area 29. FIG. 5 shows a state in which the backup file recording area 25 and the waveform data recording area 29 are distinguished. When a subdirectory is created later, the directory information is recorded in the subdirectory information recording area 22b in the waveform data recording area 29, but the root directory information recording area 22a and the subdirectory information recording area are recorded. When not distinguished from the area 22b, it is also simply referred to as “directory information recording area 22”. Further, data recorded in the FAT recording area 21a and the directory information recording area 22 correspond to the file management information in the present invention. The backup file recording area 25 includes a backup new FAT recording area 26, a backup current directory information recording area 27, and a management information recording area 28, as shown in FIG. .

In the new FAT recording area 26 for backup, when recording a waveform data file or creating a subdirectory later, the FAT recording area 21 is used.
New sector information to be recorded in a is recorded. Also,
Backup current directory information recording area 2
7 stores backup data of directory information that is updated in accordance with recording of a waveform data file and creation of a subdirectory. On the other hand, the management information recording area 2
8 is composed of three sectors. Each sector includes a processing target sector information recording area 28a, a processing state information recording first area 28b, and a processing state information recording second area 28.
c are respectively created. Here, in the processing target sector information recording area 28a, a sector number of a sector in which file information to be copied in the backup current directory information recording area 27 is recorded. On the other hand, the processing state information according to the progress of the file management information backup processing 1, 2 described below is recorded in the processing state information recording first area 28b and the processing state information recording second area 28c.

Subsequently, the backup file directory information recording area 2 in the protection area 23 which is the first sector of the root directory information recording area 22a.
3a, file information relating to the backup file is recorded, and a dummy recording area 23 which is an empty area of the sector is recorded.
The dummy data whose attribute is a hidden file and which is read-only is written in b (step 34). In this case, in the waveform recording device 1, since the MO drive 18 writes data in sector units, all of the protection area 23 is recorded with directory information and dummy data,
It is possible to effectively prevent the protection area 23 from being rewritten with the addition of other data. As a result, file information on the backup file is protected. Thus, the recoverable format initialization process is completed.

Next, a description will be given of the backup processing of the file management information accompanying the writing of data to the MO2 in the waveform recording apparatus 1. This backup processing is a file management information backup processing 1 that is executed when recording a file or creating a subdirectory.
(Hereinafter also referred to as "backup processing 1") and file management information backup processing 2 (hereinafter referred to as "backup processing 2") executed when the file name of a file already created or the directory name of a subdirectory is changed. ).

First, the backup process 1 will be described by taking as an example a case where waveform data having a file name of “data 1.DAT” is recorded in the directory of the MO 2 that has undergone the above-described restorable format initialization process.

First, as shown in FIG. 4, a copy of the file information recorded in the directory information recording area 22 is used as the backup current directory information recording area 27 as the pre-update file information of the current directory.
(Step 41). Next, the number of the rewritten sector in the directory information recording area 22 is recorded in the processing target sector information recording area 28a. After the recording of the backup file is completed (Step 42), a symbol SB of the processing status information indicating that the backup of the file information is completed is recorded in the management information recording area 28 as described later (Step 43). Next, the file name of the waveform data file to be recorded (here, "data 1")
Is recorded in the directory information recording area 22 (step 44). Next, the data body of "data 1.DAT" is recorded in an unrecorded sector of the waveform data recording area 29 (step 45). Subsequently, the management number of the sector in which the data body of “Data 1.DAT” is recorded and the file size of “Data 1.DAT” are additionally recorded in the directory information recording area 22 in association with the file name. (Step 46).

Next, "data 1.DAT" to be recorded in the FAT recording area 21a and the duplicate FAT recording area 21b.
The new sector information including the sector information regarding the new FAT is recorded in the backup new FAT recording area 26 (step 47). Next, a symbol SC of the processing state information indicating that the backup of the sector information has been completed is recorded in the management information recording area 28 as described later (step 48). Thereafter, the new sector information recorded in the backup new FAT recording area 26 is recorded in the FAT recording area 21a and the duplicate FAT recording area 21b, respectively (step 49). Next, after the recording of the new sector information is completed (step 50), the symbol SA of the processing state information indicating that all the recording is completed is recorded in the management information recording area 28 as described later (step 51). ). As a result, the recording of the data body of “data 1.DAT” and the “data 1.DAT”
The backup process of the file management information regarding "T" is completed.

Next, the backup process 2 will be described with an example in which the file name of the waveform data file "data 1.DAT" recorded in the directory is changed to "data 2.DAT".

First, as shown in FIG. 5, a copy of the file information recorded in the directory information recording area 22 is set as pre-update file information of the current directory.
Backup current directory information recording area 2
7 (step 61). Next, the number of the rewritten sector in the directory information recording area 22 is recorded in the processing target sector information recording area 28a. After the recording of the backup file is completed (step 62),
The processing state information symbol SB indicating that the backup of the file information has been completed is recorded in the management information recording area 28 as described later (step 63). Next, the file name (here, “data 2”) of the waveform data file to be changed is recorded in the directory information recording area 22 (step 64). After the recording of the file name is completed (step 65), a symbol SA of the processing status information indicating that all recording is completed is recorded in the management information recording area 28 as described later (step 66). As a result, the process of changing the file name and backing up the file management information relating to “data 2.DAT” is completed.

Next, referring to FIG. 6, steps 43, 48, 51, and 6 in the above-described backup processing 1 and 2 will be described.
The recording processing of the processing state information executed in 3, 66 will be described in detail.

In the backup processes 1 and 2, as described above, the symbol SB of the processing status information indicating that the backup of the file information before the change has been completed and the backup of the newly recorded sector information have been completed. In this case, three symbols, ie, a symbol SC of the processing status information indicating that the recording has been completed and a symbol SA of the processing status information indicating that all recording has been completed, are recorded in accordance with the processing stage. In this case, the processing state information is formed from a plurality of bit data, and has a data structure in which some values of the plurality of bit data are different from values of other bit data. That is, in the processing state information, all of the plurality of bits are not continuous with the value “0” or “1”. Therefore, when each bit of the processing state information matches all of the predetermined bit data, it is possible to reliably specify that the processing has been performed up to that stage. In this processing, the processing state information recording first area 2 is prepared in case that the processing state information is not recorded or is destroyed due to an unexpected situation such as a power failure.
8b and the processing state information is recorded in two areas of the processing state information recording second area 28c. More specifically, in this process, as shown in FIG.
The processing state information symbol is recorded in the area 28b (step 71). Next, after completing the recording of the processing state information symbol in the processing state information recording first area 28b (step 72), the processing state information symbol is recorded in the processing state information recording second area 28c (step 73). ). This allows
The recording processing of the processing state information is completed.

Next, referring to FIG.
Will be described.

First, the MO drive 18 of the waveform recording device 1
When the MO2 is inserted into the storage medium, the CPU 12 determines that the identification information indicating that the recording medium has been initialized in the recoverable format is M
It is determined whether or not the data is recorded in the O2 IPL recording area 20 (step 81). If it is determined that the identification symbol is not recorded, the MO that cannot perform this process is
Therefore, the CPU 12 causes the display unit 16 to display a message for warning that the recording medium has not been subjected to the restorable format initialization processing (step 82), and thereafter ends this processing. On the other hand, if it is determined that the identification symbol is recorded, the directory information recording area 23a of the protection area 23 in the root directory information recording area 22a is the same as the content created by the recoverable format initialization processing. Is determined (step 83). If it is determined that it is different from the time of initialization, the CPU 12
After displaying a warning display of "backup file error" on the display unit 16 (step 84), the process is terminated.

On the other hand, if it is determined in step 83 that they are the same, the CPU 12 determines whether the processing state information is recorded in the processing state information recording first area 28b (step 85). If the processing state information is recorded, the processing state information is read out (step 86). If the processing state information is not recorded, the processing state information is recorded in the processing state information recording second area 28c. It is determined whether it has been performed (step 87). If it is determined that the processing state information has been recorded in the processing state information recording second area 28c, the processing state information is read out (step 88). After the warning display of "abnormal" is displayed on the display unit 16 (step 84), the process is terminated. Next, the processing state information recording first area 28
It is determined whether or not the processing state information read from b or the processing state information recording second area 28c is the symbol SA (step 89).

If it is determined that the processing state information is the symbol SA, it means that all recordings have been completed normally, and the CPU 12 does not need to repair the MO2 and executes this processing. finish. On the other hand, when it is determined that the processing state information is a symbol other than the symbol SA, it is determined whether the processing state information is the symbol SB or the symbol SC (step 90). If it is determined that the symbol is SB, the processing is interrupted due to a power failure or the like while the file information is being recorded in the directory information recording area 22 or the data body is being recorded in the waveform data recording area 29. Recording area 21a and copy F
This means that no new sector information is recorded in the AT recording area 21b. Therefore, the file information recorded in the backup current directory information recording area 27 is transferred to the processing target sector information recording area 28.
The information is recorded in the directory information recording area 22 indicated by the sector number recorded in a (step 91). As a result, with respect to the data body recorded up to the time when the recording was interrupted, new file information on the data body is discarded and replaced with the file information in the original state as it is, and as a result, MO2 becomes It is restored to the state before the data itself was recorded. Thereafter, when the recording of the file information is completed (step 92), the CPU 12
After recording the symbol SA indicating that all recording is completed as processing state information in the processing state information recording first area 28b and the processing state information recording second area 28c (step 93), finish.

On the other hand, if it is determined in step 90 that the read processing state information is the symbol SC, the file information recording, the data body recording, the FAT recording area 21a and the duplicate FAT recording area are performed. 2
1b after the backup process of the sector information to be recorded in the FAT recording area 21a or the copy F
This means that the recording was interrupted by a power failure or the like while recording new sector information in the AT recording area 21b. Therefore, in this case, the sector information to be recorded in the FAT recording area 21a and the duplicate FAT recording area 21b is read out from the backup new FAT recording area 26, and is read into the FAT recording area 21a and the duplicate FAT recording area 21b. Record (step 94). As a result, the sector information about the data body for which the recording has been interrupted is recorded in the area where it should be originally recorded, so that the MO2 can be restored to a state where the data body has been recorded normally. Thereafter, when the recording of the sector information is completed (step 95), the CPU 12 returns to the processing state information recording first area 28b and the processing state information recording second area 28.
Symbol SA indicating that all recordings have been completed successfully
Is recorded as processing state information (step 96),
This processing ends.

As described above, according to the waveform recording apparatus 1, when the data recording process is interrupted due to a power failure, equipment failure, or the like, the data recording process is performed according to the processing state that has already been executed by the time of the interruption. The recorded contents of MO2 can be restored.

It should be noted that the present invention is not limited to the configuration and the processing content described in the embodiment of the present invention. For example, in the embodiments of the present invention, an example has been described in which an MO is used as a recording medium. However, a recording medium such as a floppy disk or a removable hard disk may be used as the recording medium in the present invention. Also, a drive device such as the MO drive 18 may be connected to the waveform recording device 1 via a connection cable and used without being built in the waveform recording device 1.

The file management information restoring process for the recording medium is also performed by the SR built in the waveform recording device 1.
The restoration data according to the present invention may be recorded in an AM or the like, and the file management information restoration processing may be executed based on the recorded restoration data. However, if the file management information is overwritten by another personal computer or the like on the recording medium to be subjected to the restoration processing,
Since the file management information restoration process cannot be correctly executed, it is preferable to record restoration data in a recording medium to be subjected to the file management information restoration process.

[0057]

As described above, according to the data recording apparatus of the first and second aspects, the data for restoration is recorded on at least one of the recording medium and the internal memory during the data recording processing on the recording medium. Even in the event of an unexpected event such as a power failure during the data recording process,
The recording medium can be restored to the state immediately before the recording process or the normal recording state based on the recorded restoration data, thereby preventing the recorded contents of the recording medium from being destroyed due to a power failure or the like.

According to the data recording apparatus of the third aspect, the restoration data including the file management information of the recording target file and excluding the data body of the recording target file related to the data recording process is recorded. Even when the repair data is recorded in the recording medium, the restoration data can be quickly recorded while preventing the use efficiency of the data area of the recording medium from being reduced.

According to the data recording apparatus of the present invention, the data in the minimum recording unit area in which the repair data and the file information of the repair data are recorded are each formed as a hidden file. Thus, the restoration data can be effectively protected.

Further, according to the data recording apparatus of the present invention, predetermined information different from the repair data is recorded in an empty area of the minimum recording unit area in the data recording apparatus which records the file information of the repair data. This prevents the file information of the repair data from being rewritten, so that the file information of the repair data can be reliably protected.

According to the data recording apparatus of the sixth aspect, the recording medium is restored to the state immediately before the recording processing or to the normal recording state according to the processing state corresponding to the recorded processing state information, so that the recording medium is uniquely determined. Compared to the case where the recording process is restored to the state immediately before the recording process, the operation of the operator for the unexpected situation can be unnecessary or simplified.

According to the data recording apparatus of the present invention, the processing state information is formed from a plurality of bit data, and a part of the plurality of bit data is different from the other bit data. With the structure, it is possible to reliably specify up to which stage the processing has been performed, so that the subsequent restoration processing can be reliably executed.

According to the data recording apparatus of the present invention, the restoration data is recorded on a recording medium on which predetermined identification information is recorded, and the identification information is recorded on an arbitrary recording medium. The automatic recording process and the restoration of the restoration data can be executed only for the recording medium on which the important data is recorded.

Further, according to the data recording device of the present invention, since the identification information is recorded in the IPL recording area, the erasure of the identification information due to an erroneous operation can be reliably prevented.

According to the data recording apparatus of the present invention, a predetermined display corresponding to the result of determining whether or not the identification information is recorded on the recording medium is displayed on the display unit, so that the operator can be provided with the information. On the other hand, it is possible to reliably and easily perceive whether or not the recording data of the recording medium mounted on the apparatus can be restored, thereby preventing the recording medium on which the important data is recorded from being destroyed.

According to the data recording apparatus of the twelfth aspect, when recording measurement data generally considered important, it is possible to effectively protect the recording medium on which the important data is recorded.

[Brief description of the drawings]

FIG. 1 is an electrical block diagram of a waveform recording device according to an embodiment of the present invention.

FIG. 2 is a flowchart of a recoverable format initialization process in the waveform recording device according to the embodiment of the present invention.

FIG. 3 is a recording area diagram for explaining a recording area of an MO on which a recoverable format initialization process has been performed by the waveform recording apparatus according to the embodiment of the present invention;

FIG. 4 is a flowchart of file management information backup processing 1 in the waveform recording device according to the embodiment of the present invention.

FIG. 5 is a flowchart of file management information backup processing 2 in the waveform recording device according to the embodiment of the present invention.

FIG. 6 is a flowchart of a process of recording processing state information in the waveform recording device according to the embodiment of the present invention.

FIG. 7 is a flowchart of a file management information restoration process in the waveform recording device according to the embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 waveform recording device 2 MO 12 CPU 16 display unit

Claims (12)

[Claims] At the time of data recording processing on a recording medium,
For restoration to restore the recording medium to a state immediately before the recording processing in which the file management information of the recording medium was recorded immediately before the data recording processing, or a normal recording state to be normally recorded by the data recording processing. A data recording device for recording data on at least one of the recording medium and a memory in the device. 2. The data recording apparatus according to claim 1, wherein the recording medium can be restored to the state immediately before the recording processing or to the normal recording state based on the restoration data. 3. The data for restoration includes at least file management information of the file to be recorded, and excludes a data body of the file to be recorded in the data recording process. 3. The data recording device according to 1 or 2. 4. The file according to claim 1, wherein each of the restoration data and the data in the minimum recording unit area in which the file information of the restoration data is recorded is a hidden file. The data recording device according to any one of the above. 5. The data recording apparatus according to claim 1, wherein predetermined information different from the repair data is recorded in a free area of a minimum recording unit area in the data recording apparatus in which the file information of the repair data is recorded. 5. The data recording device according to any one of items 1 to 4. 6. A processing state information corresponding to a processing state in the data recording processing is recorded as a part of the restoration data, and the state immediately before the recording processing or the processing state information is recorded in accordance with the processing state corresponding to the processing state information. 6. The recording medium according to claim 1, wherein the recording medium is restored to a normal recording state.
The data recording device according to any one of the above. 7. The processing state information is formed from a plurality of bit data, and a part of the plurality of bit data has a data structure different from values of other bit data. 7. The data recording device according to claim 6, wherein 8. The data recording apparatus according to claim 1, wherein the recording of the restoration data is performed on the recording medium on which predetermined identification information is recorded. 9. The data recording apparatus according to claim 8, wherein said identification information is recordable on said recording medium. 10. The data recording apparatus according to claim 9, wherein said identification information is recorded in an IPL recording area. 11. A display, comprising: determining whether or not the identification information is recorded for the recording medium, and displaying a predetermined display corresponding to the determination result on the display. Item 11. The data recording device according to any one of Items 8 to 10. 12. The data recording device according to claim 1, wherein the data recording device is a measuring device that records measurement data.