JP3811942B2 - Data record management system and data record management program - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data recording management system provided with a data recording management means for managing recording processing of data to be recorded on a recording medium in a data recording apparatus provided in the computer system, and recording of data to be recorded on the recording medium. The present invention relates to a data record management program for managing processing.
[0002]
[Prior art]
As for an aspect of recording data on a recording medium, there are conventionally various recording formats called a so-called file system.
In these recording formats, normally, in order to read / write data to / from the recording medium, for example, information such as the location of the data to be recorded on the recording medium is generated as management data, and the recording medium itself If an auxiliary storage means is provided, the information is recorded in the storage means.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, during the recording process, only the management data recording process and the recording target data recording process are executed. May not be completed normally, and the process after the energization recovery may not be executed normally. In particular, when the energization is stopped during the management data recording process and the management data is destroyed, it becomes impossible to access the data recorded on the recording medium.
The present invention has been made in view of such circumstances, and an object of the present invention is to reduce data loss as much as possible in the case where the recording process does not end normally due to an energization stop or the like.
[0004]
[Means for Solving the Problems]
  By providing the configuration according to claim 1,In the data recording device provided in the computer systemIn a data recording management system provided with data recording management means for managing recording processing of recording target data on a recording medium, the data recording management means is configured to record the recording target processing in writing the recording target data on the recording medium. Both the first management data for writing or reading the target data and the second management data for writing or reading the recording target data have a setting relationship and are written at any recording time. A management data recording process for creating and recording data that can detect whether an abnormality has occurred and a real data recording process for writing the recording target data to the recording medium are executed.The first management data recording process for creating and recording the first management data as data that can be detected as to whether or not a write error has occurred during the recording; A second management data recording process for generating and recording the second management data as data capable of detecting whether or not a write error has occurred during the recording; 1 management data recording process, the actual data recording process, and the second management data recording process are executed in this order, and the data recording management means includes information for identifying data and information on a write position The first management data and the second management data are composed of the same data including the actual data recording process in which the first management data and the second management data are the same Based on those recorded is determined whether the information for the said recording target data in the real data recording process is configured to determine whether successfully written.
[0005]
That is, the first management data and the second management data, which are management data for writing or reading the data to be recorded, are recorded, so that power is supplied at the timing of any of the management data recording processes. Even if a data write error occurs due to a stop or the like, and the management data becomes abnormal data, the other management data exists as normal data, and the first management data and Since it is possible to identify which of the second management data contains the normal management data, it is possible to restore all the management data by using the normal management data.
Therefore, when the recording process does not end normally due to energization stop or the like, data loss can be reduced as much as possible.
Whether the first management data and the second management data are abnormal is determined at which timing of the first management data recording process or the second management data recording process. Such as a method of making a data configuration that can identify a write abnormality, a method of determining which recording process an abnormality has occurred by judging both the first management data and the second management data, etc. It can be determined by various methods.
[0007]
  or,Since the writing abnormality does not occur during the recording process of the first management data and the second management data, the writing abnormality may occur due to the energization stop or the like when the recording target data is written to the recording medium. If it can be detected that a writing error has occurred during actual data recording processing, it can be used as useful information.
  In this case, it is possible to detect the writing abnormality by converting the recording target data itself into a data format capable of detecting the writing abnormality, but in general, the management data having a small amount of data and On the other hand, if such conversion processing is performed on data to be recorded, which is often very large data, the data recording processing time becomes very long due to the conversion processing time. is not.
[0008]
Therefore, as described above, whether or not a write error has occurred during the actual data recording process by executing the first management data recording process, the actual data recording process, and the second management data recording process in this order. It is possible to determine whether or not.
In other words, when the energization is stopped due to a power failure or the like during the actual data recording process, the recorded first management data is the management data for the recording target data for which the recording process is stopped, while the recorded first data 2. Since the management data is management data for the previously recorded data to be recorded, whether the writing error occurred during the actual data recording process by comparing the first management data and the second management data. Whether or not can be detected.
[0009]
  Even when a write error occurs in the first management data recording process or the second management data recording process, it is determined that the first management data and the second management data are for different recording target data. However, as described above, both the first management data and the second management data are prepared as data that can detect whether or not a write error has occurred during recording. Thus, a case in which a write error has occurred in the first management data recording process or the second management data recording process can be excluded from the determination target in advance.
  Therefore, it is possible to detect whether or not a writing abnormality has occurred during the actual data recording process while avoiding an increase in processing time.
  Further, the first management data and the second management data may have a relationship in which the second management data can be created from the first management data, or conversely, the first management data can be created from the second management data. If they are included, they do not necessarily have to be the same data, but the management of these management data can be simplified by configuring them with the same data as described above.
[0010]
  Also, the aboveClaim 2By providing the configuration described above, the data recording management means, in the management process for managing the recording contents of the recording medium, writes errors in the first management data recording process based on the read first management data A first management data discrimination process for discriminating whether or not there is a write abnormality in the second management data recording process based on the read second management data; The discrimination results in the first management data discrimination process and the second management data discrimination process, and the first management data and the second management data are recorded for the same actual data recording process. Based on the determination information as to whether or not the data to be recorded is the actual data for determining whether or not the recording target data has been normally written in the actual data recording process. It is configured to perform a data determination process.
[0011]
That is, it is determined whether or not there is a writing abnormality during the first management data recording process by the first management data determination process, and whether or not there is a writing abnormality during the second management data recording process by the second management data determination process When the first management data and the second management data are normally written, the first management data and the second management data are identical to the actual data recording process. By determining whether or not there is a write error due to the stop of energization during the actual data recording process depending on whether or not it has been recorded, it is possible to accurately identify at which processing timing the write error has occurred. The return process can be performed quickly.
[0012]
  Also, the aboveClaim 3With the configuration described above, when the data recording management unit determines that there is a writing abnormality in the first management data determination process, the data management unit stores the first management data based on the second management data. A management data repair that creates and records the second management data based on the first management data when it is determined that there is a write error in the second management data discrimination process. It is configured to perform processing.
[0013]
That is, when a write error occurs during the first management data recording process or the second management data recording process, the entire management data is restored with the normal management data, so the first management data If a writing error occurs during the data recording process, the state returns to the state before starting the recording operation of the recording target data. If a writing error occurs during the second management data recording process, the recording target data is stored. The recording process automatically returns to the completed state.
Therefore, the management burden on the operator can be reduced.
[0014]
  Also, the aboveClaim 4With the above-described configuration, the data recording management unit reads the first management data and the second management data that are read when the recording target data is determined not to be normally written in the actual data determination processing. It is configured to execute an abnormal data deletion process for creating and recording the first management data or the second management data based on the information related to the recording target data that is included in common for the management data.
[0015]
That is, when a writing error occurs during the actual data recording process, the first management data or the second management data is determined according to the information related to the recording target data that is included in common with the read first management data and second management data. By creating and recording data for recording, the information related to the data to be recorded for which writing has become abnormal is deleted from the management data, and the work to return to the stage before recording of the data to be recorded starts automatically. It is possible to reduce the work load on the operator.
[0016]
  Also, the aboveClaim 5By providing the configuration described above, the data recording management means includes the information related to the recording target data included in the first management data and the second management data read in the abnormal data deletion process. The non-volatile memory is configured to store information indicating that the first management data or the second management data created based on the information is being processed during the process of recording the data.
[0017]
In other words, in situations where a power outage has occurred due to a power failure due to a typhoon or lightning, even after recovering from a power outage, there is often a case where the power failure is repeated after that. When the abnormal data deletion process is being performed as an operation, the energization is stopped again, and the data being repaired may be destroyed.
Therefore, by storing the information during abnormal data deletion processing in the nonvolatile memory as described above, for example, the energization stop occurs during abnormal data deletion processing, and the writing abnormality of the first management data, etc. occurs. Even if it is done, the recovery operation can be resumed with reference to the stored contents of the nonvolatile memory after the power supply is restored, and the reliability can be further enhanced.
The non-volatile memory includes not only a memory that retains data in a non-powered state such as a flash memory but also a non-volatile memory such as an SRAM that is backed up by a battery.
[0018]
  Also, the aboveClaim 6By providing the configuration described above, the data recording management means for setting write abnormality identification for data that has not been normally written when it is determined that the recording target data has not been normally written in the actual data determination processing After the data is written, an abnormal data rewriting process is performed to create and record the second management data based on the first management data.
  That is, when a write error occurs during the actual data recording process, the setting write error identification data is written for the data that has not been normally written, and the second management data is changed based on the first management data. By creating and recording, the operation of shifting the recording operation of the data to be recorded to the state where the recording is completed normally is automatically executed, so that the burden on the operator can be reduced and the power supply can be restored. By using the setting write abnormality identification data later, it becomes possible to specify the location where the write abnormality has occurred in detail.
[0019]
In addition, when a write error occurs during the actual data recording process, if the recovery operation is performed by the above abnormal data rewrite process, the recovery operation can be performed without providing the non-volatile memory as described above. Simplification can be achieved.
In other words, if a write error occurs due to the stop of energization during the recording process of the second management data created based on the first management data, the second management data will be recovered at the next energization recovery. The write abnormality is detected by the data discrimination process, and for example, a recovery operation such as the management data restoration process can be executed.
On the other hand, if the writing abnormality occurs when the setting write abnormality identification data is being recorded and the writing abnormality occurs, the restoration work is executed in the abnormal data rewriting process at the next energization recovery.
The setting write abnormality identification data is set as data notifying the operator that the data is not normal without causing the computer system to operate abnormally when the operator uses the setting writing abnormality identification data. Is done.
[0020]
  Also, the aboveClaim 7By providing the configuration described above, when the data recording management unit determines that the recording target data has not been normally written in the actual data determination process, the data recording management unit is configured to notify the notification unit to that effect. Yes.
  Accordingly, since the operator is alerted by the notification of the notification means, it can be avoided that the operator overlooks the use of the setting write abnormality identification data after the restoration of energization.
[0022]
  Also, the aboveClaim 8With the configuration described above, the data recording management means records the basic management data having the same data contents a plurality of times in the first management data recording process or the second management data recording process. Whether the basic management data included in the read first management data or the second management data coincides with each other in the first management data determination process or the second management data determination process Is configured to detect the presence or absence of a write error.
[0023]
That is, for producing the first management data or the second management data as data that can detect a writing abnormality, for example, as a relatively simple form, the sum value of each bit of the data is added to the actual data. It is also possible to convert the data to a data format that can detect write errors, such as converting to the same data, but as described above, the basic management data having the same data content is recorded multiple times. By creating the first management data or the second management data as a set of a plurality of the same basic management data, the data processing can be simplified and the write error can be reliably performed by a simple comparison process. The presence or absence of can be detected.
[0024]
  Also, the aboveClaim 9A data recording management program for managing a recording process of recording target data on a recording medium in a data recording apparatus provided in a computer system by providing the configuration described above is a recording time process for writing the recording target data to the recording medium. In order to write or read the data to be recordedIncludes information for identifying data and information on write positionFirst management data recording processing for creating and recording first management data as data that can be detected as to whether or not a writing error has occurred during recording, and actual data for writing the recording target data to the recording medium For recording processing and writing or reading of the data to be recordedThe same data as the first management dataSecond management data record for creating and recording the second management data as data having a setting relationship with the first management data and capable of detecting whether or not a writing abnormality has occurred during the recording. First management for determining whether or not there is a writing abnormality in the first management data recording process based on the read first management data in a management process for managing the recording contents of the recording medium Data discriminating process, second management data discriminating process for discriminating whether or not there is a writing abnormality in the second management data recording process based on the read second management data, and the first management data discriminating process And the determination result in the second management data determination process, and the first management data and the second management data are recorded for the same actual data recording process. The first management data discriminating process is executed by executing an actual data discriminating process for discriminating whether or not the recording target data is normally written in the actual data recording process based on the judgment information as to whether or not the data When it is determined that there is a write abnormality, the first management data is created and recorded based on the second management data, and it is determined that there is a write abnormality in the second management data determination process. A management data repair process for creating and recording the second management data based on the first management data, and the recording target data is not written normally in the actual data determination process. When it is determined that the first management data or the second management data has been determined, a repair process for creating and recording the first management data or the second management data is executed.
[0025]
Accordingly, when a write error occurs during the first management data recording process or the second management data recording process, the entire management data is restored with the normal management data. If a writing error occurs during the data recording process, the state returns to the state before starting the recording operation of the recording target data. If a writing error occurs during the second management data recording process, the recording target data is stored. The recording process automatically returns to the completed state.
On the other hand, when a write error occurs during the actual data recording process, a repair process for creating and recording the first management data or the second management data is automatically executed.
Therefore, when power failure occurs due to a power failure, etc., and a write error occurs during recording of the data to be recorded, data loss is reduced as much as possible regardless of the processing timing of the write error. can do.
Note that the first management data recording process, the actual data recording process, and the second management data recording process, which are sequentially executed, do not necessarily need to be executed continuously. The case where the process is sandwiched is also included.
[0026]
  Also, the aboveClaim 10In the first management data recording process or the second management data recording process, the basic management data having the same data content is recorded a plurality of times, and the first management data is provided. In the determination process or the second management data determination process, the presence or absence of a write error is detected based on whether or not the basic management data included in the read first management data or the second management data matches each other. Is configured to do.
  Accordingly, the first management data or the second management data is created as a set of a plurality of the same basic management data, and the data processing is simplified and the write error is reliably ensured by a simple comparison process. The presence or absence of can be detected.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the data recording management system of the present invention is applied to a photo print system will be described with reference to the drawings.
{First embodiment}
The photographic print system DP exemplified in the present embodiment is known as a so-called digital minilab machine, and as shown in FIG. 2, developed photographic film 1 (hereinafter simply referred to as “film 1”). Image input device IR for inputting image data for producing a photographic print from a memory card, MO or CD-R, etc., and image data input by the image input device IR is exposed to photographic paper 2 And an exposure / development apparatus EP.
[0028]
[Schematic configuration of image input device IR]
As schematically shown in FIG. 1, the image input device IR includes a film scanner 3 for reading a frame image of the film 1, an external input / output device 4 including a memory reader, an MO drive, a CD-R drive, and the like. The main control device 5 is configured by a general-purpose small computer system and controls the film scanner 3 and the external input / output device 4 and performs management of the entire photo print system DP. A monitor 6 that displays a simulated image simulating a finished print image and various control information is connected to an operation console 7 for manually setting exposure conditions and inputting control information.
[0029]
The film scanner 3 includes a halogen lamp 10, a dimming filter 11 for adjusting the color balance of light emitted from the halogen lamp 10, a mirror tunnel 12 that uniformly mixes light that has passed through the dimming filter 11, and a conveyance A film mask unit 13 that is provided with a mechanism 13a, a film mask (not shown), and the like and positions the film 1 at a predetermined reading position, a CCD line sensor unit 14 for photoelectrically converting a frame image of the film 1, and a film 1 A lens 15 for forming an image of the image on the CCD line sensor unit 14, a mirror 16 for bending the optical path by 90 degrees, and a processing circuit for amplifying and A / D converting the output signal of the CCD line sensor unit 14. 17 and a reading control device 18 that controls the entire film scanner 3 are provided.
[0030]
The CCD line sensor unit 14 includes three lines of CCD line sensors in which about 5000 CCD elements are arranged in the width direction of the film 1, and the light receiving surface of each CCD line sensor has red, green, and blue colors, respectively. A color filter is formed to detect the frame image of the film 1 by color separation.
Based on the reading command from the main control device 5, the reading control device 18 starts the transport movement of the film 1 set on the film mask unit 13 and also outputs the frame image of the film 1 output from the processing circuit 17. The image data is output to the main controller 5.
[0031]
[Schematic configuration of exposure / development apparatus EP]
The exposure / development apparatus EP develops an exposure unit 20 provided with a PLZT print head 20a, an exposure control apparatus 21 for controlling the exposure unit 20, and the photographic paper 2 exposed by the exposure unit 20 inside the casing. A development processing unit 22, a development control device 23 for controlling a photographic paper transport system in the development processing unit 22 and managing a development processing liquid, a printer control device 24 for controlling the entire exposure / development device EP, and a housing There is provided a photographic paper transport system PT that transports the photographic paper 2 drawn from the photographic paper magazine 8 disposed on the upper surface to the development processing unit 22 by a number of transport rollers 25 and the like.
[0032]
Outside the housing of the exposure / development apparatus EP, a sorter 26 for classifying the photographic paper 2 developed and dried by the development processing unit 22 into orders, and the photographic paper 2 discharged from the discharge port 22a. Is provided with a conveyor 27 for conveying the control information to the sorter 26, and a console 29 for inputting various control information and a monitor 30 for displaying the various control information.
Further, a cutter 28 for cutting the long photographic paper 2 drawn out from the photographic paper magazine 8 into a set print size is provided in the middle of the conveyance path of the photographic paper conveyance system PT.
[0033]
[Photo print production operation]
Next, a photographic print production operation by the photographic print system DP having the above configuration will be schematically described.
When the operator inputs an instruction to make a photographic print for the frame image of the film 1, the main control device 5 instructs the film scanner 3 to read the film 1, and the image of the film 1 is read from the reading control device 18. Data is sequentially received and recorded in a hard disk drive 40 as a built-in data recording device RD.
On the other hand, when the operator inputs an instruction to create a photographic print for image data recorded on a recording medium such as a memory card, MO, or CD-R, the main controller 5 selects the corresponding drive of the external input / output device 4. The image data is instructed to be read, and the image data is sequentially received from the drive and recorded in the hard disk drive 40.
[0034]
In the present embodiment, the main control device 5 functions as data recording management means DC that manages the recording process of data to be recorded on the recording medium (magnetic disk) in the data recording device RD. Management is performed when image data received from the output device 4 is recorded as data to be recorded, and the image data is recorded in the hard disk drive 40. Specific processing will be described later.
[0035]
Based on the image data input as described above, main controller 5 calculates a simulated image that will be obtained when a print is produced using the image data by an image processing circuit (not shown). And display it on the monitor 6. The operator observes the simulated image on the monitor 6, and performs an exposure condition correction input operation from the console 7 if an appropriate image is not obtained.
The image processing circuit of the main controller 5 generates exposure image data for each of red, green, and blue under predetermined calculation conditions according to the input image data and the correction input.
[0036]
The exposure image data is sent to the printer control device 24 of the exposure / development apparatus EP and stored in a memory provided in the printer control device 24.
When the printer control device 24 detects that the front end of the photographic paper 2 has been conveyed to a predetermined exposure start position based on the conveyance information of the photographic paper 2 obtained from the photographic paper conveyance system PT, the exposure control device 21. To start the exposure operation, and sequentially transmits the image data for exposure to the exposure control device 21 at a speed corresponding to the exposure processing speed of the exposure unit 20.
The exposure control device 21 activates each optical shutter of the PLZT print head 20a based on the received exposure image data to form a latent image of the print image on the photographic paper 2.
[0037]
The photographic paper 2 subjected to the exposure processing in the exposure unit 20 is transported to the development processing unit 22 by the photographic paper transport system PT, and is developed by sequentially passing through each development processing tank.
The developed photographic paper 2 is further dried and then discharged from the discharge port 22a onto the conveyor 27 and collected by the sorter 26 for each order.
[0038]
[Processing of data recording management means DC]
Next, the function as the data recording management means DC of the main controller 5 will be described. The main controller 5 assumes such a case that energization of the main controller 5 is stopped due to a power failure or the like while the image data is being written to the hard disk drive 40. Even in this case, the data recording management program shown in the flowcharts of FIGS. 3 to 5 is executed so that the loss of image data is minimized.
[0039]
The process will be specifically described below.
First, when the image data received from the reading control device 18 or the like is written to the hard disk drive 40, the recording process shown in the flowchart of FIG. 3 is executed.
In the recording operation shown in FIG. 3, management data recording processing for creating management data for writing or reading image data and recording it in a predetermined area of the hard disk drive 40, and writing actual image data are performed. The actual data recording process is executed.
The management data includes four pieces of basic management data including information for identifying image data to be written, such as a file name, and information on a writing position set by searching for a free recording area. Produced. However, these four basic management data have exactly the same data contents. By writing a single basic management data into different recording areas on the magnetic disk four times, substantially four basic management data. Is configured.
[0040]
The four basic management data are recorded on the magnetic disk after the actual data recording process, the first management data including two basic management data recorded on the magnetic disk prior to the actual data recording process. It is divided into second management data consisting of two basic management data.
That is, the two basic management data writes in step # 1 and step # 2 shown in the flowchart of FIG. 3 are the first management data recording process for recording the first management data, and the actual data recording in step # 3. The writing of the basic management data twice in step # 4 and step # 5, which is executed after the processing, becomes the second management data recording process for recording the second management data, and the first management data recording The process, the actual data recording process, and the second management data recording process are sequentially executed.
As described above, the four basic management data are all the same data. Therefore, the first management data and the second management data are completely the same data. In order to distinguish them, the basic management data written for the first time in step # 1 is the first basic management data, and the basic management data written for the second time in step # 2 is for the second basic management. Data, the basic management data written for the third time in step # 4 is called third basic management data, and the basic management data written for the fourth time in step # 5 is called fourth basic management data.
[0041]
Next, the processing of FIGS. 4 and 5 will be described.
The management processing of FIGS. 4 and 5 is executed when the main control device 5 is activated.
That is, when energization of the main controller 5 is started, first, it is confirmed whether the restoration storage flag stored in the nonvolatile memory 41 provided in the main controller 5 is set or cleared (step #). 11). As will be described in detail later, the restoration storage flag is set when the energization is further stopped during the restoration operation after the energization is stopped. The nonvolatile memory 41 is constituted by, for example, a flash memory or a battery backup memory.
[0042]
If the recovery storage flag is in the clear state (step # 11), the first management data on the magnetic disk, that is, the first basic management data and the second basic management data are read (step # 12), and the first basic data is read out. It is compared whether or not the management data matches the second basic management data (step # 13).
If the first basic management data and the second basic management data match, it means that the basic management data, that is, the first management data has been written normally, and is the same data. If the expected first basic management data and the second basic management data do not match, the energization is stopped at any timing during the writing of the first basic management data and the second basic management data. Therefore, it can be determined that the writing has not ended normally and a writing error has occurred. Accordingly, the process of step # 13 is a first management data discrimination process for discriminating a write abnormality in the first management data recording process based on the read first management data.
[0043]
If it is determined in step # 13 that a write error has occurred during the first management data recording process, the first management data is created and recorded based on the second management data. More specifically, the first and second basic management data on the magnetic disk constituting the first management data are updated by the fourth basic management data constituting the second management data (step # 14). .
This is because when the writing abnormality occurs in the first management data, the power supply is stopped at the time of writing the first management data, so the second management data is the data at the time of the previous recording process. Since the data is left as normal data, the first management data can be repaired with the normal second management data, and the image data recording operation (processing in FIG. 3) at the time when the writing abnormality occurs is started. It is restored to its previous state. Note that the third basic management data may be used instead of the fourth basic management data to update the first and second basic management data on the magnetic disk.
[0044]
If it is determined in step # 13 that no write abnormality has occurred during the first management data recording process, the second management data on the magnetic disk, that is, the third and fourth basic management data are then read ( Step # 15), it is compared whether or not the third basic management data matches the fourth basic management data (step # 16).
If the third basic management data and the fourth basic management data match, this means that the basic management data, that is, the second management data has been written normally, and they are the same data. If the expected third basic management data and the fourth basic management data do not match, the energization is stopped at any time during the writing of the third basic management data and the fourth basic management data. Therefore, it can be determined that the writing has not ended normally and a writing error has occurred. Accordingly, the process of step # 16 is a second management data discrimination process for discriminating a writing abnormality in the second management data recording process based on the read second management data.
[0045]
If it is determined in step # 16 that a write error has occurred during the second management data recording process, the second management data is created and recorded based on the first management data. More specifically, the third and fourth basic management data on the magnetic disk constituting the second management data are updated by the first basic management data constituting the first management data (step # 17). .
This is because when the writing abnormality occurs in the second management data, the energization is stopped at the time of writing the second management data, so the recording process of the first management data and the writing of the image data itself Is completed normally, the second management data can be restored with the normal first management data, and the image data recording process (processing in FIG. 3) at the time when the writing abnormality occurs is all normal. It is repaired to a completed state. Note that the second basic management data may be used instead of the first basic management data to update the third and fourth basic management data on the magnetic disk.
[0046]
The first management data is created based on the second management data when it is determined that there is a write error in the first management data determination process by the process of step # 17 and the process of step # 14. And when the second management data discriminating process determines that there is a write error, the management data repair process is configured to create and record the second management data based on the first management data. ing.
[0047]
When it is determined in step # 16 that no writing abnormality has occurred during the second management data recording process, the first management data and the second management data are recorded for the same actual data recording process. It is judged whether it is a thing. Specifically, it is determined whether or not the first basic management data matches the fourth basic management data (step # 18).
At the time of processing in step # 18, since both the first management data and the second management data have been normally recorded, the first basic management data and the fourth basic management data do not match. That is, the process is stopped by the energization stop at the time of the actual data storing process for writing the image data, and the first management data is the data set for the image data that is being recorded at that time, The second management data is data set for the image data of the previous recording work.
Therefore, in step # 18, the determination results in the first management data determination process (step # 13) and the second management data determination process (step # 16), the first management data and the second management data, Actual data discrimination processing for discriminating whether or not the data to be recorded has been normally written in the actual data recording processing based on the determination information as to whether or not the data is recorded for the same actual data recording processing. Will be running.
[0048]
If the first basic management data and the fourth basic management data match, the image data recording operation has been completed normally, and the management processing of FIGS. Migrate to
On the other hand, when it is determined in step # 18 that a writing error has occurred in the actual data recording process, a repair process for creating and recording the first management data or the second management data is executed. In the first embodiment, the abnormal data deletion process of step # 19 to step # 23 is executed as the repair process.
In this abnormal data deletion process, the first management data or the second management data is created and recorded based on the information relating to the image data that is included in common with the read first management data and second management data.
Specifically, management data is created at the coincident portion between the first basic management data and the fourth basic management data (step # 19), and the first and second data on the magnetic disk are created using the created management data. The second, third, and fourth basic management data are updated and recorded (step # 22). Accordingly, the image data in which the writing abnormality has occurred disappears from the management data, so that the data is substantially deleted.
[0049]
However, at this time, it was read because the power supply to the main controller 5 was stopped due to a power failure or the like during the update process of the first, second, third, and fourth basic management data. Information related to image data that is commonly included in the first management data and the second management data, that is, the management data created in step # 19 is written in the nonvolatile memory 41 (step # 20), and in step # 22. Before the update processing of the first, second, third, and fourth basic management data, the first management data or the second management data created by the management information created in step # 19 is recorded. The recovery storage flag in the non-volatile memory 41 is set to the set state as information indicating that processing is in progress during processing (step # 21). Then, after the update processing of the first, second, third, and fourth basic management data in step # 22 is completed, the restoration storage flag is cleared (step # 23).
[0050]
By taking measures to stop energization in this way, the main controller 5 is energized due to a power failure or the like in the update processing of the first, second, third, and fourth basic management data in step # 22. When stopped, the management data written in step # 20 is stored and held in the nonvolatile memory 41, and the recovery storage flag is maintained in the set state.
Accordingly, when energization to the main control device 5 is restored and execution of the management process of FIGS. 4 and 5 is newly started, it is confirmed that the recovery storage flag is set (step # 11). The management data stored in the non-volatile memory 41 is read (step # 24), and the first, first, second, third and fourth basic management data on the magnetic disk are updated with the management data. Then, the restoration storage flag is cleared (step # 23).
[0051]
In the above-described management data restoration process (steps # 14 and # 17), the power supply may be stopped due to a power failure or the like even during the restoration process. In this case, the first management data to be updated (step #) 14) or the second management data (in the case of step # 17) is originally broken, and the same processing is repeated again according to the determination in step # 13 or step # 16.
[0052]
{Second Embodiment}
The second embodiment of the present invention is different from the first embodiment only in the processing contents of the management processing of FIGS. 4 and 5 in the first embodiment, and the other parts are completely the same as the first embodiment.
Since the processing shown in the flowchart of FIG. 3 is also the same as that of the first embodiment, the data contents of the first to fourth basic management data, the basic management data, the first management data, and the second management data The relationship is also the same, and the description is omitted.
The management process executed by the data record management means DC in the second embodiment is executed by the data record management program shown in the flowcharts of FIGS.
The processes of FIGS. 6 and 7 are executed when the main control device 5 is activated, as in the first embodiment.
That is, the first management data on the magnetic disk, that is, the first basic management data and the second basic management data are read (step # 31), and the first basic management data and the second basic management data match. Whether or not to do so is compared (step # 32).
If the first basic management data and the second basic management data match, it means that the basic management data, that is, the first management data has been written normally, and is the same data. If the expected first basic management data and the second basic management data do not match, the energization is stopped at any timing during the writing of the first basic management data and the second basic management data. Therefore, it can be determined that the writing has not ended normally and a writing error has occurred. Accordingly, the process of step # 32 is a first management data discrimination process for discriminating a writing abnormality in the first management data recording process based on the read first management data.
[0053]
If it is determined in step # 32 that a write error has occurred during the first management data recording process, the first management data is created and recorded based on the second management data. More specifically, the first and second basic management data on the magnetic disk constituting the first management data are updated by the fourth basic management data constituting the second management data (step # 33). .
This is because when the writing abnormality occurs in the first management data, the power supply is stopped at the time of writing the first management data, so the second management data is the data at the time of the previous recording process. Since the data is left as normal data, the first management data can be repaired with the normal second management data, and the image data recording operation (processing in FIG. 3) at the time when the writing abnormality occurs is started. It has been restored to its previous state. Note that the third basic management data may be used instead of the fourth basic management data to update the first and second basic management data on the magnetic disk.
[0054]
If it is determined in step # 32 that no write abnormality has occurred during the first management data recording process, then the second management data on the magnetic disk, that is, the third and fourth basic management data are read ( Step # 34), it is compared whether or not the third basic management data matches the fourth basic management data (step # 35).
If the third basic management data and the fourth basic management data match, this means that the basic management data, that is, the second management data has been written normally, and they are the same data. If the expected third basic management data and the fourth basic management data do not match, the energization is stopped at any time during the writing of the third basic management data and the fourth basic management data. Therefore, it can be determined that the writing has not ended normally and a writing error has occurred. Accordingly, the process of step # 35 is a second management data discrimination process for discriminating a write abnormality in the second management data recording process based on the read second management data.
[0055]
If it is determined in step # 35 that a write error has occurred during the second management data recording process, the second management data is created and recorded based on the first management data. More specifically, the third and fourth basic management data on the magnetic disk constituting the second management data are updated by the first basic management data constituting the first management data (step # 36). .
This is because when the writing abnormality occurs in the second management data, the energization is stopped at the time of writing the second management data, so the recording process of the first management data and the writing of the image data itself Is completed normally, the second management data can be restored with the normal first management data, and the image data recording process (processing in FIG. 3) at the time when the writing abnormality occurs is all normal. It is repaired to a completed state. Note that the second basic management data may be used instead of the first basic management data to update the third and fourth basic management data on the magnetic disk.
[0056]
When it is determined that there is a write error in the first management data discrimination process by the process of step # 36 and the process of step # 33, the first management data is changed based on the second management data. A management data restoration process for creating and recording the second management data based on the first management data when it is determined that there is a writing abnormality in the second management data discrimination process. It is composed.
[0057]
When it is determined in step # 35 that no writing abnormality has occurred during the second management data recording process, the first management data and the second management data are recorded for the same actual data recording process. It is judged whether it is a thing. Specifically, it is determined whether or not the first basic management data matches the fourth basic management data (step # 37).
At the time of the processing of step # 37, since both the first management data and the second management data have been normally recorded, the first basic management data and the fourth basic management data do not match. That is, the process is stopped by the energization stop at the time of the actual data storing process for writing the image data, and the first management data is the data set for the image data that is being recorded at that time, The second management data is data set for the image data of the previous recording work.
Accordingly, in step # 37, the determination results in the first management data determination process (step # 32) and the second management data determination process (step # 35), the first management data and the second management data, Actual data discrimination processing for discriminating whether or not the data to be recorded has been normally written in the actual data recording processing based on the determination information as to whether or not the data is recorded for the same actual data recording processing. Will be running.
[0058]
If the first basic management data and the fourth basic management data match, the image data recording operation has been completed normally, and the management processing of FIGS. Migrate to
On the other hand, when it is determined in step # 37 that a writing abnormality has occurred in the actual data recording process, a repair process for creating and recording the first management data or the second management data is executed. In the second embodiment, as this repair process, the abnormal data rewrite process of step # 38 to step # 41 is executed.
In this abnormal data rewriting process, after setting write abnormality identification data is written for data that has not been normally written, second management data is created and recorded based on the first management data.
Specifically, for example, “NG” or “NG” is set as the setting write abnormality identification data in the recording area of the image data in which the write abnormality has occurred, which is specified by comparing the first management data and the second management data. The image data having characters such as “Trouble” is written (step # 40), and the third basic management data and the fourth basic management on the magnetic disk with the first basic management data including information about the setting write abnormality identification data. Update data is recorded (step # 41).
[0059]
However, at this time, in order to notify the operator that the image data to be written is replaced with the setting writing abnormality identification data, the image data writing abnormality has occurred on the screen of the monitor 6 as the notification means IM. Is displayed (step # 38), and when the operator confirms the screen display and inputs an instruction to start the recovery process from the console 7, the recovery process described above is executed ( Steps # 40 and # 41).
[0060]
In the above-described abnormal data rewriting process, even if the non-volatile memory 41 as in the first embodiment is not provided, a measure for substantially stopping energization is provided.
That is, when the power supply to the main control device 5 is stopped due to a power failure or the like during the process of rewriting the image data in which the write abnormality has occurred in step # 40 with the setting write abnormality identification data, the power supply to the main control device 5 is restored. When the management process of FIGS. 6 and 7 is newly started, it is determined in step # 37 that a writing error has occurred during the actual data recording process, and the processes in steps # 38 to # 41 are repeated. Become.
Further, when the power supply to the main control device 5 is stopped due to a power failure or the like during the update process of the third and fourth basic management data in the step # 41, the power supply to the main control device 5 is recovered, and a new FIG. When execution of the management process of FIG. 7 is started, it is determined in step # 35 that a write error has occurred during the second management data recording process, and the second management data is restored in step # 36. In some cases, it is determined in step # 37 that a writing error has occurred during actual data recording processing, and the processing in steps # 38 to # 41 is repeated.
[0061]
In the above-described management data restoration process (steps # 33 and # 36), the power supply may be stopped due to a power failure or the like during the restoration process. In this case, as in the first embodiment, the update target Since the first management data (in the case of step # 33) or the second management data (in the case of step # 36) is originally broken, the same processing is repeated again according to the determination in step # 32 or step # 35.
[0062]
{Other Embodiments}
Hereinafter, other embodiments of the present invention will be listed.
(1) In the first embodiment and the second embodiment described above, the first management data and the second management data are respectively data that can detect whether or not a write abnormality has occurred during recording. The same basic management data is written twice. For example, the data to be recorded is converted into data obtained by adding the sum of the bits of the data to the actual data. The first management data or the second management data is created by applying, to the basic management data, a conversion process that adds data from which features have been extracted, or a conversion process that cannot be restored to the original data by modifying the data. You may do it.
(2) In the first and second embodiments, each of the first management data and the second management data is created and recorded by writing the basic management data twice. You may write more than three times.
[0063]
(3) In the first embodiment and the second embodiment, not only the writing abnormality is specified for the management data of the first management data and the second management data but also the actual image data writing process. Although it is specified whether or not a write error has occurred during the data recording process, the detection of the write error during the actual data recording process may not be performed.
In this case, the basic management data is recorded twice in different recording areas in the first management data recording process, and the basic management data is recorded once in different recording areas in the second management data recording process. It is possible to simplify the configuration so that the first management data and the second management data are constituted by three pieces of basic management data.
Whether or not a write error has occurred in such management data recording processing can be determined by reading the three basic management data and checking whether or not they all match. Regarding which of the recording processes occurred, if the two basic management data match, the remaining basic management data is a write abnormality, and when the three basic management data are all different, It can be determined that the second basic management data written is abnormal.
[0064]
(4) In the first and second embodiments, the management process shown in FIGS. 4 and 5 and the management process shown in FIGS. 6 and 7 are configured to be executed when the main controller 5 is started. However, the configuration may be such that it is executed periodically after startup instead of at startup.
(5) In the second embodiment, in the abnormal data rewriting process, a display abnormality is displayed on the monitor 6 to indicate that a writing abnormality has occurred during the actual data recording process and that the image data in which the writing abnormality has occurred is replaced with the setting writing abnormality identification data. However, the monitor display may be omitted, and the process of immediately replacing the data with the setting write abnormality identification data may be executed.
[0065]
(6) In the first embodiment and the second embodiment, the hard disk drive 40 is exemplified as the data recording device RD. However, a magneto-optical disk drive using a magneto-optical disk as a recording medium or a flexible disk as a recording medium. The present invention can be applied to various data recording devices RD such as a flexible disk drive.
(7) In the first embodiment and the second embodiment, a small general-purpose computer is exemplified as the computer system. However, the present invention can be applied to various computer systems such as a device-embedded computer.
[0066]
【The invention's effect】
According to the configuration of the first aspect, the first management data and the second management data, each of which is management data for writing or reading the data to be recorded, are recorded, so that either management is performed. Even if a data write error occurs due to the power-off etc. at the timing of the data recording process, and the management data becomes abnormal data, the other management data exists as normal data. Moreover, since it is possible to specify whether the first management data or the second management data contains the normal management data, it is possible to restore all the management data using the normal management data. Therefore, when the recording process does not end normally due to energization stop or the like, data loss can be reduced as much as possible.
[0067]
  In addition,When the energization is stopped due to a power failure or the like during the actual data recording process, the recorded first management data is the management data for the recording target data for which the recording process is stopped, whereas the recorded second management Since the data for management is management data for the recording target data previously recorded, whether or not a writing error has occurred during the actual data recording process by comparing the first management data and the second management data. Can be detected.
  Therefore, it is possible to detect whether or not a writing abnormality has occurred during the actual data recording process while avoiding an increase in processing time.
  In addition, the first management data and the second management data may have a relationship in which the second management data can be created from the first management data, or conversely, the first management data can be created from the second management data. If they are included, they do not necessarily have to be the same data, but the management of these management data can be simplified by configuring them with the same data as described above.
[0068]
  Also, the aboveClaim 2According to the described configuration, the first management data discriminating process determines whether or not there is a write error during the first management data recording process, and the second management data discriminating process determines the second management data recording process. The first management data and the second management data are identical to each other when the first management data and the second management data are normally written. By determining whether or not there is a write error due to the energization stop during the actual data recording process depending on whether or not it is recorded for the recording process, it is accurately identified at which processing timing the write error has occurred. Therefore, the subsequent return process can be performed quickly.
[0069]
  Also, the aboveClaim 3According to the described configuration, when a write error occurs during the first management data recording process or the second management data recording process, the entire management data is restored with the normal management data. If a writing error occurs during the first management data recording process, the state returns to the state before starting the recording operation of the recording target data, and a writing error occurs during the second management data recording process. For example, the recording target data automatically returns to the state where the recording process has been completed normally.
  Therefore, the management burden on the operator can be reduced.
[0070]
  Also, the aboveClaim 4According to the configuration described above, when a writing error occurs during the actual data recording process, the first management data is determined based on the information related to the recording target data included in the read first management data and second management data. By creating and recording data or second management data, information related to the recording target data for which writing has become abnormal is deleted from the management data, and the process returns to the stage before starting the recording operation of the recording target data The work to be performed is automatically executed, and the burden on the operator can be reduced.
[0071]
  Also, the aboveClaim 5According to the configuration described above, by storing information during the abnormal data deletion process in the nonvolatile memory, for example, an energization stop occurs during the abnormal data deletion process, and the writing abnormality of the first management data or the like occurs. Even if it occurs, the recovery operation can be resumed by referring to the storage contents of the nonvolatile memory after the power supply is restored, and the reliability can be further improved.
[0072]
  Also, the aboveClaim 6According to the configuration described above, when a writing abnormality occurs during the actual data recording process, the setting writing abnormality identifying data is written for the data that has not been normally written, and the first management data is used to write the first data. (2) By creating and recording the management data, formally, the operation of shifting the recording operation of the data to be recorded to the normally completed state is automatically executed, and the work burden on the operator can be reduced. At the same time, by using the setting write abnormality identification data after the energization recovery, it becomes possible to specify in detail the location where the write abnormality has occurred.
  In addition, when a write error occurs during the actual data recording process, if the recovery operation is performed by the above abnormal data rewrite process, the recovery operation can be performed without providing the non-volatile memory as described above. Simplification can be achieved.
[0073]
  Also, the aboveClaim 7According to the configuration described above, the operator is alerted by the notification of the notification means, so that it is avoided that the operator overlooks the use of the setting write abnormality identification data after the energization recovery.it can.
  or,the aboveClaim 8According to the configuration described above, the basic management data having the same data content is recorded a plurality of times, and the first management data or the second management data is produced as a set of a plurality of the same basic management data. As a result, the data processing can be simplified and the presence or absence of a writing abnormality can be reliably detected by a simple comparison process.
[0074]
  Also, the aboveClaim 9According to the described configuration, when a write error occurs during the first management data recording process or the second management data recording process, the entire management data is restored with the normal management data. If a writing error occurs during the first management data recording process, the state returns to the state before starting the recording operation of the recording target data, and a writing error occurs during the second management data recording process. For example, the recording target data automatically returns to the state where the recording process has been completed normally.
  On the other hand, when a write error occurs during the actual data recording process, a repair process for creating and recording the first management data or the second management data is automatically executed.
  Therefore, when power failure occurs due to a power failure, etc., and a write error occurs during recording of the data to be recorded, data loss is reduced as much as possible regardless of the processing timing of the write error. can do.
[0075]
  Also, the aboveClaim 10According to the described configuration, the first management data or the second management data is created as a set of a plurality of the same basic management data, and the data processing is simplified and a simple comparison process is performed. Can reliably detect whether there is a write error.
[Brief description of the drawings]
FIG. 1 is a block diagram of a photographic print system according to an embodiment of the present invention.
FIG. 2 is an external perspective view of a photographic print system according to an embodiment of the present invention.
FIG. 3 is a flowchart of processing at the time of recording according to the embodiment of the present invention.
FIG. 4 is a flowchart of management processing according to the first embodiment of the present invention.
FIG. 5 is a flowchart of management processing according to the first embodiment of the present invention.
FIG. 6 is a flowchart of management processing according to the second embodiment of the present invention.
FIG. 7 is a flowchart of management processing according to the second embodiment of the present invention.
[Explanation of symbols]
DC data record management means
IM notification means
RD data recording device
41 Nonvolatile memory

Claims (10)

A data recording management system provided with data recording management means for managing recording processing of data to be recorded on a recording medium in a data recording apparatus provided in a computer system,
The data recording management means, in the recording process for writing the recording target data to the recording medium,
The first management data for writing or reading the recording target data and the second management data for writing or reading the recording target data have a setting relationship, and any recording A data recording process for management that creates and records as data that can detect whether a write error has occurred,
An actual data recording process for writing the data to be recorded on the recording medium, and
The management data recording process includes a first management data recording process for creating and recording the first management data as data that can be detected as to whether or not a write error has occurred during the recording, and the second management data recording process. The management data is composed of a second management data recording process for creating and recording data that can be detected as to whether or not a writing error has occurred during recording.
The data recording management means is configured to execute in the order of the first management data recording process, the actual data recording process, and the second management data recording process,
The data recording management means comprises the first management data and the second management data with the same data including information for identifying data and information on a write position,
Based on the determination information as to whether or not the first management data and the second management data are recorded for the same actual data recording process, the recording target in the actual data recording process A data record management system configured to determine whether data has been successfully written . In the management process for managing the recording contents of the recording medium, the data recording management means,
A first management data discriminating process for discriminating whether or not there is a writing abnormality in the first management data recording process based on the read first management data;
A second management data discriminating process for discriminating whether or not there is a writing abnormality in the second management data recording process based on the read second management data;
The discrimination results in the first management data discrimination process and the second management data discrimination process, and the first management data and the second management data are recorded for the same actual data recording process. An actual data determination process for determining whether or not the data to be recorded has been normally written in the actual data recording process based on determination information as to whether or not the data has been recorded. 1. The data record management system according to 1. The data record management means includes
When it is determined that there is a writing abnormality in the first management data determination process, the first management data is created and recorded based on the second management data,
When it is determined that there is a writing abnormality in the second management data determination process, a management data repair process for creating and recording the second management data based on the first management data is executed. The data recording management system according to claim 2, which is configured. The data record management means includes
When it is determined in the actual data determination process that the recording target data has not been written normally, information about the recording target data that is included in common with the read first management data and second management data 4. The data recording management system according to claim 2 , wherein abnormal data deletion processing for producing and recording the first management data or the second management data is executed. In the abnormal data deletion process, the data record management means
The information related to the recording target data included in common with the read first management data and the second management data, and the first management data or the second management data created based on the information are recorded. The data recording management system according to claim 4, wherein information indicating that processing is in progress during processing is stored in a nonvolatile memory. The data record management means includes
When it is determined in the actual data determination process that the recording target data has not been normally written, the setting write abnormality identification data is written for the data that has not been normally written, and then based on the first management data claim 2 or 3 data recording management system according is configured to perform the abnormal data rewriting process to be recorded by making the second management data Te. The data record management means includes
7. The data recording management system according to claim 6 , wherein when it is determined that the recording target data has not been normally written in the actual data determination processing, a notification means notifies the fact. The data record management means includes
In the first management data recording process or the second management data recording process, the basic management data having the same data content is recorded a plurality of times,
In the first management data discriminating process or the second management data discriminating process, whether or not the basic management data included in the read first management data or the second management data matches each other The data recording management system according to any one of claims 2 to 7 , wherein the data recording management system is configured to detect the presence or absence of a writing abnormality. A data recording management program for managing recording processing of data to be recorded on a recording medium in a data recording device provided in a computer system,
In the recording process of writing the data to be recorded on the recording medium,
The first management data including information for identifying data for writing or reading the data to be recorded and information on the writing position is used as data capable of detecting whether or not a writing abnormality has occurred during the recording. A first management data recording process for producing and recording;
An actual data recording process for writing the data to be recorded to the recording medium;
The second management data composed of the same data as the first management data for writing or reading the data to be recorded has a setting relationship with the first management data, and Sequentially performing a second management data recording process for producing and recording as data capable of detecting whether or not a writing error has occurred during recording;
In the management process for managing the recording contents of the recording medium,
A first management data discriminating process for discriminating whether or not there is a writing abnormality in the first management data recording process based on the read first management data;
A second management data discriminating process for discriminating whether or not there is a writing abnormality in the second management data recording process based on the read second management data;
The discrimination results in the first management data discrimination process and the second management data discrimination process, and the first management data and the second management data are recorded for the same actual data recording process. Based on the determination information as to whether or not the actual data recording process, the actual data determination process for determining whether or not the recording target data has been normally written in the actual data recording process,
Creating and recording the first management data based on the second management data when it is determined that there is a writing abnormality in the first management data determination process;
When it is determined that there is a writing abnormality in the second management data determination process, a management data repair process for creating and recording the second management data based on the first management data is executed,
When it is determined in the actual data determination process that the data to be recorded has not been written normally, a repair process is performed to create and record the first management data or the second management data. Data record management program. In the first management data recording process or the second management data recording process, the basic management data having the same data content is recorded a plurality of times,
In the first management data discriminating process or the second management data discriminating process, whether or not the basic management data included in the read first management data or the second management data matches each other 10. The data recording management program according to claim 9 , wherein the data recording management program is configured to detect the presence or absence of a writing abnormality.

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