JP4982990B2 - Copy apparatus and method - Google Patents

Description

  The present invention relates to a technique for selectively copying files and directories stored in a storage medium to another storage medium.

2. Description of the Related Art Conventionally, a technique for copying all files and directories stored in a certain storage medium to another storage medium is known. For example, in Patent Document 1, all information stored in a hard disk device is copied to an auxiliary storage device.
Japanese Patent Laid-Open No. 2001-14198

  Here, in the technique of Patent Document 1, all information is copied to the auxiliary storage device no matter what information is stored in the hard disk device. In other words, files stored in the hard disk device cannot be selectively copied.

  In addition, when a file or the like is selectively copied, it is convenient to use an API provided by the OS or the like. On the other hand, however, there is a problem that if API is used, overhead increases and processing takes time.

  Accordingly, an object of the present invention is to provide a technique for selectively copying files and directories stored in a storage medium to another storage medium at high speed.

  A copying apparatus according to an embodiment of the present invention copies a target directory and file from a first storage medium storing a plurality of files in a hierarchical directory structure to a second storage medium. . The copy apparatus includes a search list area for a search list including management information for each directory and file, including hierarchy information and attribute information for each of the directories and files stored in the first storage medium. The management information for each directory and file is read from the first storage medium, stored in the search list area, and stored in the first storage medium with reference to the search list. Means for determining whether each directory or file is a copy target based on the attribute information of each directory or file for all the files and directories that have been copied; If this is the case, based on the directory management information, When it is determined that the file is a copy target file by means for generating a directory on the second storage medium and the determination means, the file main body information is copied to the second storage medium based on the management information of the file. Means.

  In a preferred embodiment, the determination unit may perform the determination in parallel with the generation of the search list by the search list generation unit.

  In a preferred embodiment, the search list area includes a root area for storing management information of subdirectories and files generated in a root directory, and subdirectories and files generated in any of the subdirectories. And the search list generation means has a capacity of management information of the subdirectory and file generated in any one of the subdirectories exceeding the capacity of the data area. In some cases, the data area may be used cyclically.

  In a preferred embodiment, the determination unit may determine that the directory or file attribute is a copy target when the attribute of the directory or file is neither a hidden attribute nor a system attribute.

  Hereinafter, a multifunction peripheral according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a multifunction machine having both printer and scanner functions according to the present embodiment.

  That is, the multifunction device 1 executes a predetermined program to control the entire multifunction device 1, a ROM 102 storing a program executed by the CPU 101, a RAM 103 used as a temporary storage area, a print A printing mechanism 150 that performs printing, a printing control unit 104 that controls the printing mechanism 150 to execute printing, a scanning mechanism 160 that reads an image, and a reading control unit 105 that controls the scanning mechanism 160 to read an image. A memory card connector 107 to / from which a predetermined memory card 8 is attached / detached, a memory card control unit 106 for controlling reading / writing with respect to the memory card 8, a liquid crystal display (LCD) 109 and an operation panel 110 for a user interface, Display control unit 10 for controlling the liquid crystal display 109 Comprising the a USB interface for communication according to other devices and USB (Universal Serial Bus), and a USB host controller 115 and USB connector 116.

  A predetermined memory card 8 can be attached to and detached from the memory card connector 107. For example, the memory card 8 may be a card that is attached to a digital camera and stores data of an image photographed by the digital camera.

A predetermined USB device 3 can be connected to the USB connector 116. The USB device 3 may be, for example, a reader / writer of a predetermined storage medium 4 on which a USB device controller is mounted. In the present embodiment, the predetermined storage medium 4 is, for example, an MO (Magneto-Optic),
Zip, flash memory or the like may be used.

  In the MFP 1 according to the present embodiment, the memory card control unit 106 can read the image data stored in the memory card 8 and print it using the printing mechanism 150. Further, the image data read by the scanning mechanism 160 can also be printed by the printing mechanism 150.

  Further, the multifunction device 1 can store the image data read from the memory card 8 and the image data read by the scan mechanism 160 in the storage medium 4 via the USB interfaces 115 and 116 and the USB device 3.

  In particular, in this embodiment, all image data stored in the memory card 8 is backed up to the storage medium 4 at high speed. At this time, all data stored in the memory card 8 is not copied to the storage medium 4 but is copied except for the hidden attribute file and the system attribute file which are not directly related to the user.

  Further, in the following description, the file system of the memory card 8 and the storage medium 4 will be described with respect to a case where FAT (File Allocation Tables) is adopted. However, the present invention can be applied to a file system other than FAT. For example, when the storage medium 4 employs a file system other than FAT, format conversion may be performed in an appropriate format before data read from the memory card 8 is written to the storage medium 4.

  Hereinafter, processing for high-speed backup from the memory card 8 to the storage medium 4 will be described.

  First, FIG. 2 shows an example of a hierarchical directory structure stored in the memory card 8.

  As shown in the figure, the memory card 8 is provided with a hierarchy of directories and stores a plurality of files. That is, subdirectories “DCIM” and “MISC” are provided in the root directory. “DCIM” is further provided with a subdirectory “100EP”, in which three JPEG files are stored. Also, one file is stored in “MISC”.

  FIG. 3 shows a data structure when the directory hierarchical structure shown in FIG. 2 is stored on the memory card 8 in accordance with the FAT.

  In the FAT, first, the storage area is divided into a root directory area 210 and a data area 220.

  In the root directory area 210, root directory information 310 is stored. The root directory information 310 stores management information 311 for subdirectories generated in the root directory and management information 311 for files stored in the root directory.

  Here, the management information 311 includes the name of the file or subdirectory, the extension, the attribute, the recording time, and the top cluster number in which the data of the subdirectory or file body is stored.

  The data area 220 stores subdirectory information 320 and file body information 330 of each subdirectory. The subdirectory information 320 stores own directory information 321, parent directory information 322, subdirectory management information 323 generated in the own directory, and file management information 323 stored in the own directory. In the following description, the subdirectory may be simply referred to as “directory”.

  Next, a processing procedure when the above-described multifunction device 1 backs up a predetermined file from the memory card 8 to the storage medium 4 will be described with reference to FIGS. In this embodiment, when receiving an instruction from the user to back up all data stored in the memory card 8 to the storage medium 4, the directory and file of the hidden attribute and the system attribute are excluded from the backup target. Backup of directories and files.

  First, the search list 500 illustrated in FIG. 6 will be described.

  The search list 500 is an area for saving the root directory information 310 and the subdirectory information 320 stored in the memory card 8 in the backup process described below, and is realized on the RAM 103, for example.

  The search list 500 is divided into a root directory area 510 for storing the root directory information 310 and a data area 520 for storing the subdirectory information 320 stored in the data area 220 of the memory card 8 as shown in FIG. ing. When the total capacity of the subdirectory information 320 stored in the data area 220 exceeds the total capacity of the data area 520, the data area 520 is used cyclically.

  The root directory area 510 and the data area 520 are both areas 512 and 522 for storing the management information 311 and 323, and areas for storing the cluster numbers on the memory card 8 in which the management information 311 and 323 are stored. 511, 521.

  Further, in the search list 500, areas 512 and 522 that are currently processed are indicated by a search pointer 600. That is, the search pointer 600 holds the cluster numbers of the areas 512 and 522 to be processed and the number of the area in the cluster.

  4 and 5 are flowcharts showing a processing procedure when a predetermined file is backed up from the memory card 8 to the storage medium 4. Hereinafter, it will be described according to the flowcharts of FIGS. 4 and 5 with reference to FIG.

  The multi-function device 1 reads the root directory information 310 of the memory card 8 attached to the memory card connector 107 and stores it in the root directory area 510 of the search list 500 (S101).

  Next, the search pointer 600 is set at the head of the root directory area 510 (S102). That is, the search pointer 600 at this time points to the first area of the cluster number “00” = root directory area.

  Here, the CPU 101 reads the area pointed to by the search pointer 600 (S103), and determines whether any management information is stored (S104). If the management information is stored in the read area (S104: Yes), it is determined based on the management information whether the directory or file related to the management information is a storage target (S201). .

  In the present embodiment, whether or not a directory or file is a storage target is determined based on attribute information included in the management information. That is, when the attribute of a directory or file is a hidden attribute or a system attribute, the directory or file is excluded from the storage target, and in the case of other attributes, the storage target is included.

  Here, when the file or directory related to the management information to be determined is not a storage target (S201: No), the process returns to step S103.

  On the other hand, when the file or directory related to the management information is to be saved (S201: Yes), it is determined whether the management information is a directory or a file (S202).

  If the target management information is that of a directory, the CPU 101 acquires the head sector number included in the management information. Then, the management information 323 of the subdirectory information 320 stored in the sector number area is additionally registered in the data area 520 of the search list 500 (S211).

  Further, the CPU 101 generates this subdirectory in the storage medium 4 based on the management information of the target directory (S212). As a result, a directory to be backed up is generated in the storage medium 4. At this time, if the long file name is saved, the saved long file name is also copied.

  Here, the contents of the search pointer 600 are saved in the stack, the search pointer 600 is moved to the head of the management information 323 added to the search list 500 in step S211, and the process returns to step S103 (S213).

  If it is determined in step S202 that the target management information is file management information, it is determined whether or not the management information stores a long file name (S203).

  If the management information is a long file name stored (S203: Yes), the management information is saved in the long file name saving area (S206).

  On the other hand, when the target management information does not store the long file name (S203: No), the storage medium is maintained while maintaining the hierarchical relationship on the memory card 8 based on the management information of the file. The file is copied to 4 (S204). That is, the CPU 101 specifies the position of the file body information 330 on the memory card 8 based on the head cluster number included in the management information, and copies it to the storage medium 4. At this time, if the long file name is saved, the saved long file name is also copied.

  Then, the CPU 101 moves the search pointer 600 to the next area and returns to step S103 (S205).

  Here, returning to FIG. 4, when there is no management information in the area pointed to by the current search pointer 600 read in step S103 (S104: No), whether the search pointer 600 points to the root directory area 510 or not. Is determined (S105).

  Here, when a point other than the root directory area 510 is pointed (S104: No), that is, in the process immediately before this, the subdirectory information 320 stored in the data area 520 is searched, and the subdirectory is related. The process is complete. Therefore, in order to return to the directory one level higher and continue the processing, the information of the search pointer 600 saved in the stack is popped and the process returns to step S103 (S106).

  On the other hand, when the search pointer 600 points in the root directory area 510 (S105 Yes), the search of all the subdirectories is completed, and the processing for all the management information of the root directory is also completed. The process ends.

  According to the processing described above, management information including information indicating the hierarchical relationship between directories and files and attribute information is acquired in a search list, and each directory and file is sequentially backed up using this search list. Judgment of whether or not. As a result, it is possible to determine whether all directories and files are backup targets without duplication and omission.

  The above-described embodiments of the present invention are examples for explaining the present invention, and are not intended to limit the scope of the present invention only to those embodiments. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention.

  For example, in the above-described embodiment, the directory and the file are copied while generating the search list. However, after all the management information of the memory card is registered in the search list, the directory and the file are copied. Also good.

1 shows a configuration of a multifunction peripheral according to an embodiment of the present invention. An example of a hierarchical directory structure stored in the memory card 8 is shown. The data structure when the directory structure of FIG. 2 is stored according to FAT is shown. It is a flowchart which shows the process sequence when backing up a predetermined file. It is a flowchart which shows the process sequence when backing up a predetermined file. An example of a search list is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... MFP, 3 ... USB device, 4 ... Storage medium, 8 ... Memory card, 101 ... CPU, 102 ... ROM, 103 ... RAM, 150 ... Printing mechanism, 160 ... Scan mechanism, 500 ... Search list, 510 ... Route Directory area, 520... Data area, 600... Search pointer.

Claims (4)

An apparatus for copying a target directory and file from a first storage medium storing a plurality of files in a hierarchical directory structure to a second storage medium,
A search list area for a search list including management information for each directory and file, including hierarchy information and attribute information for each of the directories and files stored in the first storage medium;
Means for referring to management information for each directory and file included in the search list in the search list area and determining whether the directory or file stored in the first storage medium is a copy target;
A search list generating means for storing, in the search list, management information of subdirectories and files included in the copy target directory when the determination means determines that the directory is a copy target directory;
Means for generating a directory in the second storage medium based on management information of the directory to be copied;
Means for copying the file main body information to the second storage medium based on the management information of the file to be copied when the determining means determines that the file is to be copied ;
The search list area stores a root area for storing subdirectory and file management information generated in the root directory, and a subdirectory and file management information generated in any of the subdirectories. Data area, and
The search list generating means cyclically uses the data area when the capacity of the subdirectory and file management information generated in the directory to be copied exceeds the capacity of the data area. > Copy device. The determination means includes
The copying apparatus according to claim 1, wherein when the attribute of the directory or file is neither a hidden attribute nor a system attribute, the copying apparatus determines to be a copy target. A method executed by a copying apparatus for copying a target directory and file from a first storage medium in which a plurality of files are stored in a hierarchical directory structure to a second storage medium,
A search list area including management information for each directory and each file, including hierarchy information and attribute information for each of the directories and files stored in the first storage medium, and is generated in the root directory From the search list area having a root area for storing management information of subdirectories and files and a data area for storing management information of subdirectories and files generated in any of the subdirectories, Referencing management information for each directory and file included in the search list in the search list area, and determining whether the directory or file stored in the first storage medium is a copy target;
If it is determined by the determination that the directory is a copy target directory, if the capacity of the subdirectory and file management information generated in the copy target directory exceeds the capacity of the data area, the data area is cyclically selected. To store the management information of the subdirectories and files included in the directory to be copied in the search list,
Generating a directory in the second storage medium based on attribute information of the directory to be copied;
A method of copying file main body information to the second storage medium based on management information of the copy target file when it is determined by the determination that the file is a copy target file. A computer program for copying a target directory and file from a first storage medium storing a plurality of files in a hierarchical directory structure to a second storage medium,
When executed on a computer,
A search list area including management information for each directory and each file, including hierarchy information and attribute information for each of the directories and files stored in the first storage medium, and is generated in the root directory From the search list area having a root area for storing management information of subdirectories and files and a data area for storing management information of subdirectories and files generated in any of the subdirectories, Referencing management information for each directory and file included in the search list in the search list area, and determining whether the directory or file stored in the first storage medium is a copy target;
If it is determined by the determination that the directory is a copy target directory, if the capacity of the subdirectory and file management information generated in the copy target directory exceeds the capacity of the data area, the data area is cyclically selected. using the stores management information of sub directories and files included in the copied directory to the search list, based on the attribute information of the copy target directory, generating a directory in the second storage medium And
A computer program for copying file main body information to the second storage medium based on management information of a file to be copied when it is determined by the determination that the file is to be copied.

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