JP4230553B2 - Data recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a data recording apparatus that records file management information for managing a data body together with the data body on a recording medium during data recording processing on the recording medium.
[0002]
[Prior art]
  Recording media such as floppy disks, MOs (Magnet Optical Disks), and hard disks used in personal computers need to be initialized before data is recorded. In this initialization process, tracks and sectors for recording data are formed on the recording surface of the recording medium, and an IPL (Initial Program Loader) recording area, FAT (File Allcation Table) A recording area, a duplicate FAT recording area, a root directory information recording area, a data recording area, and the like are set corresponding to the recording method and recording capacity of the recording medium.
[0003]
  Here, in the IPL recording area, for example, when a recording medium is initialized so that the personal computer can be activated, a so-called boot loader for reading the activation program recorded on the recording medium into the main memory of the personal computer. Is recorded. Also, there is an IPL recording area when it is initialized for data recording. In this case, when trying to start the personal computer from the recording medium, the recording medium is initially set to be able to start the personal computer. A program for displaying on the display section that the information has not been converted or for sounding a warning sound is recorded.
[0004]
  On the other hand, in the FAT recording area, recording start sector numbers of files and subdirectories recorded on the recording medium, sector linkage information when one file is recorded across a plurality of sectors, files and subdirectories are recorded. A directory recording end sector number, a sector number of an unrecorded sector, a sector number of a bad sector, and the like are recorded. In addition, a copy of the sector information recorded in the FAT recording area is recorded in the duplicate FAT recording area in case the contents recorded in the FAT recording area are destroyed due to some abnormal situation. .
[0005]
  In addition, the root directory information recording area is recorded in the root directory.ThisFile name and subdirectory directory name created in the root directory, file extension, file attributes, file or subdirectory update time, file or subdirectory update date, FAT for that file or subdirectory A directory entry describing the FAT management number, file size, etc. recorded in the recording area is recorded. In the data recording area, the data body of the file recorded on the recording medium and the directory information related to the created subdirectory are recorded.
[0006]
  Specifically, for example, when recording a file called “data 1.TXT” on a recording medium, first, sector information recorded in the FAT recording area is read, and then unrecorded from the data recording area Search for a sector. When an unrecorded sector can be searched, file name directory information is recorded. Next, the data body of “DATA 1.TXT” is recorded in an unrecorded sector. Subsequently, the file name “Data 1”, the extension “TXT”, the FAT management number recorded in the FAT recording area regarding “Data 1.TXT”, and the like 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.
[0007]
  Thereafter, when “data 1.TXT” is read from the recording medium, first, it is checked whether or not the file name “data 1.TXT” is recorded on the recording medium by referring to the root directory information recording area. 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 is recorded. Read sector information. Next, the data body of “DATA 1.TXT” is read from the data recording area based on the read sector information. As a result, the data body of the file name “Data 1.TXT” is read from the recording medium.
[0008]
[Problems to be solved by the invention]
  However, the conventional data recording / 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 used for FAT recording. Recorded in the area. Thus, when the data body of the file recorded on the recording medium is read, the file is recorded from the data recording area based on the file management information recorded in the root directory information recording area and the FAT recording area for the file. The data body can be read. However, after the data body of the file is recorded in the data recording area, the file information or the like is recorded in the root directory information recording area or the sector information or the like is recorded in the FAT recording area. When the data recording device is stopped due to a power failure or the like, not only the file currently being recorded, but also the sector information and file information related to the file that has already been recorded before the data recording process are destroyed. Sometimes.
[0009]
  In such a case, for example, since the relationship between the data body and the sector number of the data recording area in which the data body is recorded becomes unclear, not only the file related to the data recording process but also the data recording process is performed. It becomes impossible to read the data body of the file recorded before the execution. Thus, 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. Even if the data body cannot be read, the root directory information recording area and the FAT recording area are recorded in the data recording area even though the data body related to the data recording process is recorded. The latest file information and sector information related to the data recording process may not be recorded in the use area. In such a case, there is a problem in that there is a contradiction regarding the data contents between the recorded data body and the file management information.
[0010]
  The present invention has been made in view of such problems, and provides a data recording apparatus capable of preventing destruction of recorded contents in a recording medium due to an unexpected situation occurring during data recording processing. The main purpose is to do.
[0011]
[Means for Solving the Problems]
  In order to achieve the above object, the data recording apparatus according to claim 1 is a state immediately before a recording process in which file management information of the recording medium is recorded immediately before the data recording process, or a data recording process. Recording repair data for restoring the recording medium to a normal recording state to be normally recorded by at least one of the recording medium and the in-device memoryThe data recording apparatus records predetermined information different from the repair data in an empty area of the minimum recording unit area in the data recording apparatus that records the file information of the repair data.It is characterized by that.
[0012]
  The data recording apparatus according to claim 2 is configured such that the recording medium can be restored to a state immediately before the recording process or a normal recording state based on the data for restoration in the data recording apparatus according to claim 1. .
[0013]
  In the data recording apparatus 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 internal memory. On the other hand, when an unexpected situation such as a power failure occurs during the data recording process, the state immediately before the recording process is applied to the recording medium that has not completely completed the data 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 state 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 state is restored to the normal recording state based on the restoration data. To do. For this reason, it becomes possible to prevent destruction of the recorded contents of the recording medium.In this data recording apparatus, for example, a floppy disk When a disk or MO is used as a recording medium, predetermined information such as dummy data different from the repair data is recorded in the sector which is the minimum recording unit area in which the file information of the repair data is recorded. Therefore, when the data body is recorded during the data recording process, the file information of the restoration data is not rewritten, and the file information of the restoration data can be reliably protected.
[0014]
  The data recording apparatus according to claim 3 is normally recorded in the state immediately before the recording process in which the file management information of the recording medium was recorded immediately before the data recording process or in the data recording process during the data recording process on the recording medium. A data recording apparatus that records data for repairing a recording medium in a normal recording state to at least one of the recording medium and the memory in the apparatus, and repairs processing state information corresponding to the processing state in the data recording process The recording medium is recorded as a part of data, and the recording medium is restored to a state immediately before a recording process or a normal recording state according to a processing state corresponding to the processing state information.
[0015]
  In the data recording apparatus according to the third aspect, during the data recording process on the recording medium, the restoration data is recorded on the recording medium or the internal memory. On the other hand, when an unexpected situation such as a power failure occurs during the data recording process, the state immediately before the recording process is applied to the recording medium that has not completely completed the data 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 state 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 state is restored to the normal recording state based on the restoration data. To do. For this reason, it becomes possible to prevent destruction of the recorded contents of the recording medium. In the data recording process, for example, processing such as creation of directory information for the data body, recording of the data body, and recording of sector information in which the data body is recorded is sequentially performed. In this data recording method of the data recording apparatus, the stepwise processing state in the data recording process is recorded as a part of the repair data. Therefore, when data is not normally recorded due to a power failure or the like during data recording processing, the data recording device restores the recorded contents of the recording medium according to the processing state that has already been executed by the time of the power failure. Is possible. Specifically, based on the processing status information, for example, when it is determined that only directory information creation has been executed, it is restored to the state immediately before the recording process, and when it is determined that the recording of the data body has been completed. Restore to normal recording state. For this reason, compared with the case where it is uniquely restored to the state immediately before the recording process, it is possible to make the work of the handler for an unexpected situation unnecessary or simplified.
[0016]
  The data recording device according to claim 4 is the data recording device according to claim 3, wherein the processing status information is formed from a plurality of bit data, and a value of a part of the plurality of bit data is a value of another bit data. The data structure is different from the above.
[0017]
  If the processing status information is configured with a data structure in which the value “1” or the value “0” continues, when the power is shut down due to a power failure or the like, whether the processing status information is recorded with the value “0” or not. Since it is unclear whether it is a record, it is difficult to specify at which stage of each process the power is shut off. In this data, not all of the plurality of bits are 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 determined that the processing has been performed up to that stage. Thus, it is possible to reliably specify, and it is possible to reliably execute the subsequent repair process.
[0018]
  Claim5The data recording apparatus according to claim 1.To any of 4In the described data recording apparatus, the restoration data includes at least file management information of the recording target file, and a data body of the recording target file related to the data recording process is excluded.
[0019]
  It is possible to include a data body as the restoration data. On the other hand, when recording repair data on a recording medium, if the amount of data in the data body is large, the data recording area of the recording medium may not be used effectively. In general, the data body is stored on the side of the data recording apparatus that attempts to record the data body on the recording medium. Therefore, there is little advantage of including the data body in the repair data. In this data recording device, file management information excluding the data main body is recorded as restoration data, so that even if it is recorded in the recording medium, the data area of the recording medium is restored without significantly reducing the utilization efficiency. Data can be recorded, and the repair data can be quickly recorded.
[0020]
  Claim6The data recording device according to claim 1 fromOf 5In any one of the data recording apparatuses described above, the attribute of each of the data in the minimum recording unit area in which the restoration data and the file information of the restoration data are recorded is a hidden file.
[0021]
  The restoration data can be constituted by 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 restoration 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 apparatus, since the attributes of the restoration data and the file information of the restoration data are hidden files, the data for restoration can be protected without being read by other data recording apparatuses. It becomes possible.
[0022]
  Claim7The data recording device according to claim 1 from6In the data recording apparatus according to any one of the above, the restoration data is recorded on a recording medium on which predetermined identification information is recorded.
[0023]
  Claim8The data recording apparatus described in claim7In the described data recording apparatus, the identification information can be recorded on a recording medium.
[0024]
  Although it is possible to perform the repair data recording process on all the recording media, the processing time may be wasted if it is performed on the recording medium on which less important data is recorded. ThisTheseIn the data recording device, the identification information is recorded in advance according to the importance of the data to be recorded, so that even if no designation is made by the operator for the execution of the repair process, important data is stored. It is possible to execute the automatic recording process and the repair of the repair data only on the recorded recording medium.
[0025]
  Claim9The data recording apparatus described in claim8In the described data recording apparatus, the identification information is recorded in the IPL recording area.
[0026]
  The identification information can be recorded in any storage area of the recording medium. On the other hand, in 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 repaired when the recording medium is loaded. In general, the IPL recording area cannot be rewritten unless the recording medium is initialized. Therefore, erasure of identification information due to an erroneous operation is prevented.
[0027]
  Claim10The data recording apparatus described in claim7 to 9A data recording apparatus according to any one of the above, characterized by comprising a display unit, determining whether identification information is recorded on the recording medium, and displaying a predetermined display corresponding to the determination result on the display unit. To do.
[0028]
  In this data recording apparatus, it is determined whether or not the identification information is recorded on the recording medium. For example, when the identification information is not recorded, a warning is given by displaying that fact on the display unit. Therefore, when the important data is recorded, the operator can surely and easily perceive whether or not the recorded data can be restored with respect to the mounted recording medium by checking the alarm display on the display unit. It becomes possible.
[0029]
  Claim11The data recording device according to claim 1 from10The data recording apparatus according to any one of the above, wherein the measurement apparatus records measurement data.
[0030]
DETAILED DESCRIPTION OF THE INVENTION
  Hereinafter, an embodiment in which a data recording apparatus according to the present invention is applied to a waveform recording apparatus will be described with reference to the accompanying drawings.
[0031]
  First, the electrical configuration of the waveform recording apparatus 1 will be described with reference to FIG.
[0032]
  As shown in the figure, the waveform recording apparatus 1 includes an input signal processing unit 11 that generates waveform data DS from an input signal SIN to be recorded and outputs the waveform data DS to the CPU 12, a CPU 12, a backup processing program by the CPU 12, and the like. ROM 13 for storing the operation program, RAM 14, an operation unit 15 on which various keys are arranged, a display unit 16 constituted by an LCD panel, a cathode ray tube (CRT), and the like, and a display unit under the control of the CPU 12 16 includes a printer 17 that prints a signal waveform of a recording target signal displayed on the display 16 and a hard copy of a display screen, and an MO drive 18.
[0033]
  Here, the CPU 12 performs display control of a signal waveform based on the waveform data DS for the display unit 16 and print control for the printer 17, and controls file recording processing and reading processing by the MO drive 18. Input of key signals by operating 15 keys is processed. The RAM 14 temporarily stores calculation results of the CPU 12, print data output to the printer 17, waveform data recorded by the MO drive 18, waveform data read from the MO 2 by the MO drive 18, and the like. Although the MO drive 18 is not particularly limited, in this embodiment, the MO drive 18 is configured to be able to read from and write to a 3.5-inch magneto-optical disk (hereinafter also referred to as MO).
[0034]
  As the personal computer P, a general commercial product having a 3.5-inch MO drive can be used. By inserting MO2 initialized by a repairable format initialization process described later into the MO drive, the waveform recording apparatus 1 can read waveform data and the like recorded in MO2. On the other hand, MO2 corresponds to the recording medium in the present invention, and is initialized so that it can be read by both the MO drive 18 of the waveform recording apparatus 1 and the personal computer P described above.
[0035]
  Next, the MO2 repairable format initialization process and the MO2 recording area created by this process will be described with reference to FIGS. If the data recorded in MO2 is not so important, it 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 a repairable format is selected. The processing described below is executed by the CPU 12 in accordance with a processing procedure program stored in the ROM 13 unless otherwise noted.
[0036]
  When MO2 is inserted into the MO drive 18 of the waveform recording apparatus 1, 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. 3, the IPL recording area 20, the FAT recording area 21a, and the duplicate FAT recording area 21b. Then, 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 the figure is created as the waveform data recording area 29. Next, identification information indicating that the recording medium is initialized in a recoverable format is recorded in the created IPL recording area 20 (step 32). Next, a backup file for recording repair data is created in the root directory (step 33). As a result, a backup file recording area 25 is created at the head of the waveform data recording area 29 as shown in FIG. This figure shows a state where 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. However, the root directory information recording area 22a and the subdirectory information recording area are recorded. When not distinguishing from the area 22b, it is simply referred to as “directory information recording area 22”.Say. The data recorded in the FAT recording area 21a and the directory information recording area 22 corresponds 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. .
[0037]
  In the new FAT recording area 26 for backup, new sector information to be recorded in the FAT recording area 21a is recorded when a waveform data file is recorded later or a subdirectory is created. Also, in the backup current directory information recording area 27, backup data of directory information updated as the waveform data file is recorded and the subdirectory is created is recorded. On the other hand, the management information recording area 28 is composed of three sectors, and 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. 28c is created. Here, the sector number for the sector in which the file information to be copied to the backup current directory information recording area 27 is recorded in the processing target sector information recording area 28a. On the other hand, processing state information corresponding to the progress of file management information backup processing 1 and 2, which will be described later, is recorded in the processing state information recording first area 28b and the processing state information recording second area 28c.
[0038]
  Subsequently, file information relating to the backup file is recorded in the directory information recording area 23a of the backup file in the protection area 23 which is the first sector of the root directory information recording area 22a, and a dummy recording area which is an empty area of the sector In 23b, read-only dummy data whose attribute is a hidden file is written (step 34). In this case, in the waveform recording apparatus 1, since the MO drive 18 writes data in units of sectors, all of the protection area 23 is recorded with directory information and dummy data, so that protection can be achieved with the addition of other data. It is possible to effectively prevent the region 23 from being rewritten. Thereby, the file information about the backup file is protected. The repairable format initialization process is thus completed.
[0039]
  Next, backup processing of file management information accompanying data writing to MO2 in the waveform recording apparatus 1 will be described. This backup process includes a file management information backup process 1 (hereinafter also referred to as “backup process 1”) executed when recording a file or creating a subdirectory, a file name of an already created file, There are two types of file management information backup processing 2 (hereinafter also referred to as “backup processing 2”) executed when the directory name of a subdirectory is changed.
[0040]
  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 subjected to the above-described repairable format initialization process.
[0041]
  First, as shown in FIG. 4, a copy of the file information recorded in the directory information recording area 22 is recorded in the backup current directory information recording area 27 as pre-update file information of the current directory (step 41). Next, the rewritten sector number 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), the processing status information symbol SB indicating that the backup of the file information is completed is recorded in the management information recording area 28 as will be 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, the file size of “Data 1.DAT”, and the like are additionally recorded in the directory information recording area 22 in association with the file name. (Step 46).
[0042]
  Next, new sector information including sector information relating to “data 1.DAT” to be recorded in the FAT recording area 21a and the duplicate FAT recording area 21b is recorded in the backup new FAT recording area 26 (step 47). ). Next, a processing state information symbol SC indicating that the sector information backup has been completed is recorded in the management information recording area 28 as described later (step 48). Thereafter, new sector information recorded in the new FAT recording area 26 for backup 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 processing status information symbol SA indicating that all the recording has been completed is recorded in the management information recording area 28 as will be described later (step 51). ). This completes the recording of the data body of “DATA 1.DAT” and the backup processing of the file management information related to “DATA 1.DAT”.
[0043]
  Next, the backup process 2 will be described by taking as an example the case where the file name of the waveform data file “data 1.DAT” recorded in the directory is changed to “data 2.DAT”.
[0044]
  First, as shown in FIG. 5, a copy of the file information recorded in the directory information recording area 22 is recorded in the backup current directory information recording area 27 as pre-update file information of the current directory (step 61). . Next, the rewritten sector number 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 status information symbol SB indicating that the backup of the file information is completed is recorded in the management information recording area 28 (step 63) as will be described later. Next, the file name of the waveform data file to be changed (here, “data 2”) is recorded in the directory information recording area 22 (step 64). After the recording of the file name is completed (step 65), the processing status information symbol SA indicating that all recording has been completed is recorded in the management information recording area 28 as described later (step 66). Thus, the file name change and the file management information backup processing relating to “data 2.DAT” are completed.
[0045]
  Next, the processing state information recording process executed in steps 43, 48, 51, 63, and 66 in the backup processes 1 and 2 will be described in detail with reference to FIG.
[0046]
  In the backup processes 1 and 2, as described above, the processing status information symbol SB indicating that the backup of the file information before the change is completed and the newly recorded sector information backup are completed. Three symbols are recorded in accordance with the stage of processing, the symbol SC of the processing state information to be shown and the symbol SA of the processing state information to indicate that all recording has been completed. In this case, the processing state information is formed of a plurality of bit data, and has a data structure in which some values of the plurality of bit data are different from the values of other bit data. That is, the processing status information is not continuous with all of the plurality of bits having the value “0” or “1”. For this reason, when each bit of the processing state information coincides with all the predetermined bit data, it can be surely specified that the processing has been performed up to that stage. In this process, the process state information recording first area 28b and the process state information recording second area are prepared in case the process state information is not recorded or destroyed due to an unexpected situation such as a power failure. The processing state information is recorded in two areas 28c. Specifically, in this process, as shown in FIG. 6, first, a symbol of the processing state information is recorded in the first region 28b for processing state information recording (step 71). Next, after the recording of the symbol of the processing state information in the processing state information recording first area 28b is completed (step 72), the symbol of the processing state information is recorded in the second area of recording processing state information 28c (step 73). ). Thereby, the recording process of the processing state information is completed.
[0047]
  Next, with reference to FIG. 7, the file management information restoration process by the waveform recording apparatus 1 will be described.
[0048]
  First, when MO2 is inserted into the MO drive 18 of the waveform recording apparatus 1, the CPU 12 records identification information indicating that the recording medium is initialized in a recoverable format in the IPL recording area 20 of the MO2. (Step 81). If it is determined that the identification symbol is not recorded, the CPU 12 is an MO that cannot perform this process, and therefore the CPU 12 warns that the recording medium has not been subjected to the recoverable format initialization process. After the message is displayed on the display unit 16 (step 82), this process is terminated. 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 process. Is determined (step 83). If it is determined that it is different from the time of initialization, the CPU 12 displays a warning display “abnormal backup file” on the display unit 16 (step 84), and then ends this processing.
[0049]
  On the other hand, if it is determined in step 83 that they are the same, the CPU 12 determines whether or not 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 (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). When it is determined that the processing status information is recorded in the second processing status information recording area 28c, the processing status information is read (step 88). After displaying the warning “abnormal” on the display unit 16 (step 84), the process is terminated. Next, it is determined whether or not the processing state information read from the first processing state information recording area 28b or the second processing state information recording area 28c is the symbol SA (step 89).
[0050]
  Here, if it is determined that the processing state information is the symbol SA, it means that all the recordings have been normally completed. Therefore, the CPU 12 ends the processing by making MO2 repair unnecessary. On the other hand, if 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 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 like, or the data body is being recorded in the waveform data recording area 29. This means that no new sector information is recorded in the recording area 21a and the duplicate FAT recording area 21b. Accordingly, the file information recorded in the backup current directory information recording area 27 is recorded in the directory information recording area 22 indicated by the sector number recorded in the processing target sector information recording area 28a (step 91). As a result, with respect to the data body recorded up to the time of the recording interruption, the new file information for the data body is discarded and rewritten to the original file information as a result. The data body is restored to the state before recording. Thereafter, when the recording of the file information is completed (step 92), the CPU 12 indicates that all the recording has been completed in the first area 28b for recording the processing state information and the second area 28c for recording the processing state information. After the symbol SA is recorded as process state information (step 93), this process is terminated.
[0051]
  On the other hand, if it is determined in step 90 that the read processing state information is the symbol SC, the file information is recorded, the data body is recorded, and the FAT recording area 21a and the duplicate FAT recording area 21b are recorded. This means that after the sector information backup process to be performed is completed, the recording is interrupted due to a power failure or the like when new sector information is recorded in the FAT recording area 21a or the duplicate FAT 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 from the new FAT recording area 26 for backup, 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 for the data body whose recording has been interrupted is recorded in the area to be originally recorded, so that MO2 can be restored to the state where the data body has been normally recorded. Thereafter, when the recording of the sector information is completed (step 95), the CPU 12 has successfully completed all the recordings in the processing state information recording first area 28b and the processing state information recording second area 28c. Is recorded as processing state information (step 96), and then this processing is terminated.
[0052]
  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 MO2 recording is performed in accordance with the processing state that has already been executed until the interruption. The contents can be repaired.
[0053]
  The present invention is not limited to the configuration and processing contents shown in the above-described embodiment of the invention. For example, in the embodiment of the present invention, the example in which the MO is used as the recording medium has been described. 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, the drive device such as the MO drive 18 may be used by being connected to the waveform recording device 1 by a connection cable without being built in the waveform recording device 1.
[0054]
  As for the file management information repair process for the recording medium, the repair data in the present invention is recorded in the SRAM or the like built in the waveform recording apparatus 1, and the file management information repair process is executed based on the recorded repair data. May be. However, if the recording medium to be subjected to the file management information repair process is overwritten by another personal computer or the like, the file management information repair process cannot be executed correctly, so the file management It is preferable to record restoration data in a recording medium to be subjected to information restoration processing.
[0055]
【The invention's effect】
  As described above, according to the data recording apparatus of the first and second aspects, during the data recording process, the restoration data is recorded in at least one of the recording medium and the memory in the apparatus during the data recording process on the recording medium. Even when an unexpected situation such as a power failure occurs, 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. The destruction of recorded contents can be prevented.Further, by recording predetermined information different from the repair data in the empty area of the minimum recording unit area in the data recording apparatus in which the file information of the repair data is recorded, the file information of the repair data is rewritten. Data file for repair Information can be reliably protected.
[0056]
  According to a third aspect of the present invention, the data for restoration is recorded in at least one of the recording medium and the memory in the apparatus at the time of the data recording process on the recording medium. Even when a situation occurs, it is possible to restore the recording medium to the state immediately before the recording process or the normal recording state based on the recorded restoration data, thereby destroying the recorded contents of the recording medium due to a power failure or the like. Can be prevented. In addition, by repairing the recording medium to the state immediately before the recording process or the normal recording state according to the processing state corresponding to the recorded processing state information, it is unexpected compared to the case where it is uniquely restored to the state immediately before the recording process. It is possible to make the work of the handler for the situation unnecessary or simple.
[0057]
  According to the data recording device of claim 4, 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 the values of the other bit data. As a result, it is possible to reliably specify to which stage the processing has been performed, so that the subsequent repair processing can be reliably performed.
[0058]
  Claims5According to the described data recording apparatus, the restoration data is recorded in the recording medium by recording 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. Even in such a case, the repair data can be quickly recorded while preventing the use efficiency of the data area of the recording medium from being lowered.
[0059]
  Claims6According to the described data recording apparatus, the restoration data and the data in the minimum recording unit area in which the file information of the restoration data is recorded are formed as hidden files, thereby making the restoration data effective. Can be protected.
[0060]
  Claims7 or 8According to the described data recording device, the recording of the restoration data is performed on the recording medium on which the predetermined identification information is recorded, and the identification information can be recorded on the arbitrary recording medium. Automatic recording processing and restoration of repair data can be executed only for a recording medium on which important data is recorded.
[0061]
  And claims9According to the described data recording apparatus, since the identification information is recorded in the IPL recording area, it is possible to surely prevent the identification information from being erased by an erroneous operation.
[0062]
  Claims10According to the described data recording apparatus, a predetermined display corresponding to the determination result as to whether or not the identification information is recorded on the recording medium is displayed on the display unit, so that a record attached to the apparatus can be provided to the handler. It is possible to reliably and easily perceive whether or not the recording data can be restored with respect to the medium, thereby preventing the recording medium on which important data is recorded from being destroyed.
[0063]
  Claims11According to the described data recording apparatus, when recording measurement data that is generally considered to be 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 apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart of repairable format initialization processing in the waveform recording apparatus according to the embodiment of the present invention.
FIG. 3 is a recording area diagram for explaining an MO recording area that has undergone a recoverable format initialization process 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 apparatus according to the embodiment of the present invention.
FIG. 5 is a flowchart of file management information backup processing 2 in the waveform recording apparatus according to the embodiment of the present invention.
FIG. 6 is a flowchart of processing state information recording processing in the waveform recording apparatus according to the embodiment of the present invention;
FIG. 7 is a flowchart of file management information repair processing in the waveform recording apparatus according to the embodiment of the present invention.
[Explanation of symbols]
      1 Waveform recording device
      2 MO
    12 CPU
    16 Display section

Claims (11)

During the data recording process on the recording medium, the recording is performed in the state immediately before the recording process in which the file management information of the recording medium was recorded immediately before the data recording process, or in the normal recording state that should be normally recorded by the data recording process A data recording device that records data for repairing a medium in at least one of the recording medium and the memory in the device,
A data recording apparatus, wherein predetermined information different from the restoration data is recorded in an empty area of a minimum recording unit area in the data recording apparatus in which file information of the restoration data is recorded.   2. The data recording apparatus according to claim 1, wherein the recording medium can be restored to the state immediately before the recording process or the normal recording state based on the restoration data. During the data recording process on the recording medium, the recording is performed in the state immediately before the recording process in which the file management information of the recording medium was recorded immediately before the data recording process, or in the normal recording state that should be normally recorded by the data recording process A data recording device that records data for repairing a medium in at least one of the recording medium and the memory in the device,
The processing state information corresponding to the processing state in the data recording process is recorded as a part of the restoration data, and the state immediately before the recording process or the normal recording state according to the processing state corresponding to the processing state information A data recording apparatus for repairing a recording medium . It said process state information is formed from a plurality of bit data, and claim 3, wherein the values of some of the plurality of bit data, characterized in that it is composed of different data structures with the values of the other bit data Data recording device. Wherein the repair data contains file management information for at least the recorded object file, and any of claims 1-4, characterized in that said are data recorded data main body of the recording destination file of the process is removed data recording apparatus crab according. Said recovery data, and the data of the minimum recording unit area of the file information of the recovery data is recorded, according to any one of claims 1 to 5, characterized in that each is an attribute is a hidden file Data recording device. Data recording apparatus according to any one of 6 claim 1, characterized in that the predetermined identification information to perform the recovery data recorded on the recorded the recording medium. 8. The data recording apparatus according to claim 7, wherein the identification information is configured to be recorded on the recording medium. 9. The data recording apparatus according to claim 8, wherein the identification information is recorded in an IPL recording area. 10. The display device according to claim 7 , further comprising: a display unit that determines whether or not the identification information is recorded for the recording medium, and displays a predetermined display corresponding to the determination result on the display unit. The data recording device according to any one of the above. Data recording apparatus according to any one of claims 1 to 10, characterized in that the measurement data is a measurement device for recording.

Images