WO2016088512A1 - Système de traitement de données, dispositif hôte et mémoire amovible - Google Patents

Système de traitement de données, dispositif hôte et mémoire amovible Download PDF

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Publication number
WO2016088512A1
WO2016088512A1 PCT/JP2015/081412 JP2015081412W WO2016088512A1 WO 2016088512 A1 WO2016088512 A1 WO 2016088512A1 JP 2015081412 W JP2015081412 W JP 2015081412W WO 2016088512 A1 WO2016088512 A1 WO 2016088512A1
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Prior art keywords
data
removable storage
storage device
write
host device
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PCT/JP2015/081412
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English (en)
Japanese (ja)
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研 鈴木
秀次 高橋
安彦 岡田
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オリンパス株式会社
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Publication of WO2016088512A1 publication Critical patent/WO2016088512A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data

Definitions

  • the present invention relates to a data processing system including a host device and a removable storage device.
  • a system in which data recorded by a host device (host computer) is recorded on a removable storage device (for example, an SD (Secure Digital) memory card) and can be viewed on a general-purpose PC (Personal Computer) or the like.
  • a general-purpose PC or the like may not only view the data but also tamper (change of data that should not be originally performed due to intention or negligence). If the data is falsified, there is a risk of various troubles when the data is reused in the host device.
  • endoscopy data handled by a medical institution such as a hospital includes patient data and endoscopic image data, both of which are associated with each other. If such endoscopy data is recorded from the host device to the removable storage device as described above and is altered by a general-purpose PC or the like, the association between patient data and endoscopic image data is established. There is a risk of being unraveled. If the association is broken, there is a possibility that the endoscopy data cannot be reused in the host device.
  • an object of the present invention is to provide a data processing system, a host device, and a removable storage device that prevent falsification of data recorded in the removable storage device from the host device.
  • a first aspect of the present invention is a data processing system including a host device and a removable storage device, and the host device permits the removable storage device to write data from the host device to the removable storage device.
  • a write permission command generation unit that generates a write permission command to be written, and a write permission command generated by the write permission command generation unit to write data to the removable storage device that is permitted to write data from the host device A data writing unit; and a write prohibiting command generating unit that generates a write prohibiting command for prohibiting the removable storage device from writing data to the removable storage device, wherein the removable storage device receives the host device from the host device.
  • the removable storage device In response to the permission command, the removable storage device is set to a write-permitted state that permits writing of data from the host device, and in response to the write prohibition command from the host device, the removable storage device is set to data
  • a data processing system including a state setting unit that sets a write-inhibited state for prohibiting writing of the data is provided.
  • the host device records an operation content record that causes the removable storage device to record operation content information indicating a content of a data operation related to data writing by the data writing unit.
  • An operation content recording command generation unit for generating a command, wherein the removable storage device includes an operation content storage unit in which the operation content information is recorded, and the removable storage device receives the operation content recording command from the host device. Accordingly, a data processing system is provided that records the operation content information in the operation content storage unit.
  • the removable storage device includes a plurality of data storage areas, and in the host device, the write permission command generation unit sends the write permission command to the removable device. Generated for each data storage area of the storage device, and the data writing unit writes data to the corresponding data storage area of the removable storage device that is allowed to write data from the host device by the write permission command.
  • the write prohibit command generation unit generates the write prohibit command for each data storage area of the removable storage device, and the state setting unit of the removable storage device responds to the write enable command from the host device.
  • the corresponding storage area of the removable storage device Is set to a write-permitted state that permits writing of data from the host device, and writing of data to the corresponding storage area of the removable storage device is prohibited in accordance with the write-inhibiting command from the host device.
  • a data processing system for setting a write-protected state is provided.
  • the host device includes an identification information determination unit that determines whether the identification information of the removable storage device is predetermined identification information, and the host device
  • the write permission command generation unit provides a data processing system that generates the write permission command when the identification information determination unit determines that the identification information of the removable storage device is predetermined identification information.
  • the write permission command is a command for allowing the removable storage device to edit data recorded in the removable storage device by the host device.
  • the write permission command is a command that allows the removable storage device to allow the host device to append data to the removable storage device.
  • a host device a write permission command generating unit for generating a write permission command for allowing the removable storage device to write data from the host device to the removable storage device, and the writing A data writing unit that writes data to the removable storage device that is permitted to write data from the host device to the removable storage device by the write permission command generated by the permission command generation unit; and
  • a host device comprising: a write prohibition command generation unit that generates a write prohibition command that prohibits the removable storage device from writing data.
  • a removable storage device wherein the removable storage device is set in a write-permitted state permitting data writing from the host device in response to a write permission command from the host device.
  • a removable storage device is provided that includes a state setting unit that sets the removable storage device in a write-inhibited state in which data writing is prohibited in response to a write-inhibit command from the host device.
  • FIG. 1 is a diagram showing a configuration example of a data processing system according to the first embodiment of the present invention.
  • the data processing system 100 includes a host device 200 and a removable storage device 300.
  • the data processing system 100 is an endoscope system used in a medical institution such as a hospital
  • the host device 200 is an endoscope video processor, for example
  • the removable storage device 300 is For example, an SD memory card or a USB (Universal Serial Bus) memory.
  • the removable storage device 300 is configured to be removable from the host device 200, and the removable storage device 300 is inserted into the host device 200, whereby the host device 200 and the removable storage device are configured. 300 is connected. Further, for example, the host device 200 converts an electrical signal captured by an imaging element at the distal end of an endoscope (not shown) into a video signal and displays it on a liquid crystal monitor (not shown), or displays it as image data as patient information. Etc., and the like, such as recording in the removable storage device 300 as endoscopy data.
  • the host device 200 includes a write permission command generation unit 210, a data writing unit 220, and a write prohibition command generation unit 230.
  • the write permission command generation unit 210 generates a write permission command that allows the state setting unit 310 of the removable storage device 300 to write data from the host device 200 to the storage area 320 of the removable storage device 300.
  • the data writing unit 220 writes data to the storage area 320 of the removable storage device 300 that is permitted to write data from the host device 200 by the write permission command generated by the write permission command generation unit 210.
  • the write prohibition command generation unit 230 generates a write prohibition command that causes the state setting unit 310 of the removable storage device 300 to prohibit data writing to the storage area 320 of the removable storage device 300.
  • the removable storage device 300 includes a state setting unit 310 and a storage area 320.
  • the state setting unit 310 sets the storage area 320 of the removable storage device 300 to a write permission state that permits data writing from the host device 200.
  • the storage area 320 of the removable storage device 300 is set to a write prohibit state in which data writing is prohibited.
  • each of the host device 200 and the removable storage device 300 includes, for example, a CPU (Central Processing Unit) and a ROM (Read Only Memory) not shown, and the CPU is in the ROM.
  • the functions of each part of the apparatus are realized by reading and executing the recorded program.
  • FIG. 2 is a diagram illustrating an operation example of the data processing system 100 according to the present embodiment. As shown in FIG. 2, in this operation example, when the removable storage device 300 is inserted into the host device 200 and the host device 200 and the removable storage device 300 are connected (S100), the host device 200 and the removable storage device are connected. The following operations are performed with the unit 300.
  • the write permission command generation unit 210 of the host device 200 generates a write permission command (S110), and the host device 200 transmits the write permission command to the removable storage device 300.
  • the state setting unit 310 sets the storage area 320 to a write permission state that permits writing of data from the host device 200 in accordance with the write permission command ( S120).
  • the data writing unit 220 of the host device 200 writes data to the storage area 320 of the removable storage device 300 (S130, S140).
  • the write prohibition command generation unit 230 of the host device 200 generates a write prohibition command (S150).
  • the host device 200 transmits the prohibit command to the removable storage device 300.
  • the state setting unit 310 sets the storage area 320 to a write prohibit state in which data writing is prohibited in accordance with the write prohibit command (S160).
  • the data processing system 100 According to the data processing system 100 according to the present embodiment, falsification of data recorded in the removable storage device 300 from the host device 200 can be prevented. Note that the data processing system 100 according to the present embodiment can be variously modified.
  • FIG. 3 is a diagram illustrating a configuration example of the data processing system 100 according to a modification of the present embodiment.
  • FIG. 4 is a diagram illustrating an operation example of the data processing system 100 according to the modification.
  • the removable storage device 300 includes a plurality of storage areas 320.
  • the plurality of storage areas 320 are defined as a first storage area 320a and a second storage area 320b.
  • specific data is recorded in the first storage area 320a
  • the second storage area In 320b data other than specific data is recorded.
  • the write permission command generation unit 210 In the host device 200, the write permission command generation unit 210 generates a write permission command for each storage area 320 of the removable storage device 300.
  • the data writing unit 220 writes data to the corresponding storage area 320 of the removable storage device 300 that is permitted to write data from the host device 200 by a write permission command.
  • the write prohibit command generation unit 230 generates a write prohibit command for each storage area 320 of the removable storage device 300.
  • the state setting unit 310 of the removable storage device 300 writes to the corresponding storage area 320 of the removable storage device 300 to allow data writing from the host device 200.
  • the permission state is set, and the corresponding storage area 320 of the removable storage device 300 is set to a write-inhibited state in which data writing is prohibited in accordance with a write-inhibit command from the host device 200.
  • a series of processes A surrounded by a dotted line indicates a process for the first storage area 320a
  • a series of processes B surrounded by a dotted line indicates a process for the second storage area 320b.
  • the process B is performed after the process A is shown, but the process A may be performed after the process B, or only one of the process A and the process B may be performed. .
  • the write permission command generation unit 210 of the host device 200 generates a write permission command for the first storage area 320a of the removable storage device 300 (S110a), and the write permission command is sent to the host.
  • the device 200 transmits to the removable storage device 300.
  • the state setting unit 310 puts the first storage area 320a into a write permission state that permits writing of data from the host device 200 according to the write permission command.
  • Set (S120a)
  • the data writing unit 220 of the host device 200 writes data to the first storage area 320a of the removable storage device 300 (S130a, S140a).
  • the write prohibition command generation unit 230 of the host device 200 performs the first storage of the removable storage device 300.
  • a write prohibit command for the area 320a is generated (S150a), and the host device 200 transmits the write prohibit command to the removable storage device 300.
  • the state setting unit 310 sets the first storage area 320a to a write prohibition state in which data writing is prohibited in accordance with the write prohibition command (S160a). .
  • the write permission command generation unit 210 of the host device 200 generates a write permission command for the second storage area 320b of the removable storage device 300 (S110b), and the host device 200 receives the write permission command from the removable storage device 300. Send to.
  • the state setting unit 310 puts the second storage area 320b into a write permission state that permits data writing from the host device 200 in accordance with the write permission command.
  • Set (S120b)
  • the data writing unit 220 of the host device 200 writes data to the second storage area 320b of the removable storage device 300 (S130b, S140b).
  • the write prohibition command generation unit 230 of the host device 200 performs the second storage of the removable storage device 300.
  • a write prohibit command for the area 320b is generated (S150b), and the host device 200 transmits the write prohibit command to the removable storage device 300.
  • the state setting unit 310 sets the second storage area 320b to a write prohibition state for prohibiting data writing in accordance with the write prohibition command (S160b). .
  • the configuration example shown in FIG. 5 may be applied instead of the configuration example shown in FIG.
  • a plurality of state setting units 310 are provided corresponding to a plurality of storage areas 320, and each state setting unit 310 performs state setting for the corresponding storage area 320.
  • the plurality of storage areas 320 are the first storage area 320a and the second storage area 320b
  • the corresponding plurality of state setting sections 310 are the first state setting section 310a and the second state.
  • the setting unit 310b is used.
  • the data processing system 100 having such a configuration also basically performs the same operation as the operation shown in FIG. 4, and performs the same processing as S110 to S160 shown in FIG. Can be made.
  • FIG. 6 is a diagram illustrating a configuration example of a data processing system 100 according to another modification of the present embodiment.
  • FIG. 7 is a diagram illustrating an operation example of the data processing system 100 according to the modification.
  • the removable storage device 300 in the data processing system 100 according to the present modification, the removable storage device 300 further includes identification information 330 of the removable storage device 300.
  • the identification information 330 is recorded, for example, in a storage area different from the storage area 320, and the storage area is permitted to write and read data from the host apparatus 200, but is a device other than the host apparatus 200. Writing and reading data from is prohibited.
  • the host device 200 further includes an identification information determination unit 240 that determines whether or not the identification information 330 of the removable storage device 300 is predetermined identification information.
  • the predetermined identification information is identification information of the removable storage device 300 that is permitted to connect to the host device 200.
  • the host device 200 acquires the identification information 330 of the removable storage device 300 from the removable storage device 300 (S102). Subsequently, the identification information determination unit 240 of the host device 200 determines whether or not the acquired identification information 330 is predetermined identification information (S104, S106), and when the determination result is Yes (host device 200). The process proceeds to S110, and if No (when the connection with the host device 200 is not possible), the processes of S110 to S160 are skipped.
  • the processing of S110 to S160 can be performed only with the removable storage device 300 that is permitted to connect to the host device 200.
  • FIG. 8 is a diagram illustrating a configuration example of a data processing system 100 according to another modification of the present embodiment.
  • FIG. 9 is a diagram illustrating an operation example of the data processing system 100 according to the modification.
  • the write permission command generated by the write permission command generation unit 210 of the host device 200 is stored in the storage area 320 of the removable storage device 300 by the host device 200. This is a command that allows the status setting unit 310 of the removable storage device 300 to add or edit data to or from the file.
  • the state setting unit 310 of the removable storage device 300 permits the additional write permission state for allowing the host device 200 to add data or editing the data in the storage area 320 in accordance with the write permission command from the host device 200.
  • the edit permission state is set, and the storage area 320 is set to a write prohibition state in which data writing is prohibited in response to a write prohibition command from the host device 200.
  • the data writing unit 220 of the host device 200 applies to the storage area 320 of the removable storage device 300 that is permitted to add or edit data from the host device 200 by the write permission command generated by the write permission command generation unit 210. To add or edit data.
  • S110 to S140 shown in FIG. 2 are changed to S110c to S140c shown in FIG. More specifically, after S100, the write permission command generation unit 210 of the host device 200 adds or edits data in the storage area 320 of the removable storage device 300 by the host device 200 to the state setting unit 310 of the removable storage device 300. A write permission command to be permitted is generated (S110c), and the host device 200 transmits the write permission command to the removable storage device 300.
  • the state setting unit 310 When the removable storage device 300 receives the write permission command, the state setting unit 310 performs an additional write permission state or data editing that allows the host device 200 to add data to the storage area 320 according to the write permission command.
  • the editing permission state to be permitted is set (S120c).
  • the data writing unit 220 of the host device 200 adds or edits data in the storage area 320 of the removable storage device 300 (S130c, S140c).
  • the write permission to the storage area 320 of the removable storage device 300 can be permitted to add or edit data to the storage area 320.
  • the host device 200 includes a power supply unit that supplies power to the removable storage device 300, and the state setting unit 310 of the removable storage device 300 is a host only when power is supplied from the host device 200 to the removable storage device 300. You may make it maintain the setting of the write permission state by the write permission command from the apparatus 200.
  • FIG. As a result, when there is no power supply from the host device 200 to the removable storage device 300, the storage area 320 of the removable storage device 300 is not in a write-permitted state, and as a result, the storage area 320 is in a write-inhibited state. Therefore, thereafter, data cannot be written to the storage area 320 of the removable storage device 300 by a device other than the host device 200, and the data recorded in the storage region 320 can be prevented from being falsified.
  • the data processing system 100 according to the present embodiment or the data processing system 100 according to the modified example thereof is replaced by the configuration and operation of the data processing system according to the second embodiment to be described later or the data processing system according to the modified example.
  • the data processing system according to the second embodiment of the present invention differs from the data processing system 100 according to the first embodiment in part of the configuration and operation. Therefore, here, the different configuration and operation will be mainly described.
  • the same components as those of the data processing system 100 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • FIG. 10 is a diagram illustrating a configuration example of the data processing system according to the present embodiment.
  • the host device 200 further includes an operation content recording command generation unit 250.
  • the operation content recording command generation unit 250 records operation content information indicating the content of data operation related to data writing by the data writing unit 220 in the operation content storage area 321 of the storage area 320 of the removable storage device 300. Is generated.
  • the data operation related to the data writing by the data writing unit 220 is, for example, new data creation, appending, editing, duplication, or deletion.
  • the operation content recording command is a command including the operation content information.
  • the storage area 320 of the removable storage device 300 includes an operation content storage area 321.
  • the operation content storage area 321 stores the above operation content information. Further, the removable storage device 300 records the operation content information in the operation content storage area 321 in response to the operation content recording command from the host device 200.
  • FIG. 11 is a diagram illustrating an operation example of the data processing system 100 according to the present embodiment. Note that the operation example shown in FIG. 11 corresponds to the operation example shown in FIG. As shown in FIG. 11, in this operation example, in S200 to S240, the same processing as S100 to S140 shown in FIG. 2 is performed.
  • the operation content recording command generation unit 250 of the host device 200 performs a data operation (new data of data) related to writing of data to the storage area 320 of the removable storage device 300 by the data writing unit 220 performed in S230.
  • An operation content recording command including operation content information indicating the content of creation, appending, editing, copying, deletion, etc.) is generated (S250), and the host device 200 transmits the operation content recording command to the removable storage device 300.
  • the removable storage device 300 that has received the operation content recording command records the operation content information in the operation content storage area 321 of the storage area 320 in accordance with the operation content recording command (S260).
  • the data processing system 100 it is possible to prevent falsification of data recorded in the removable storage device 300 from the host device 200, as in the data processing system 100 according to the first embodiment. it can. At the same time, it is possible to record operation content information indicating the content of data operations related to data writing from the host device 200 to the removable storage device 300, and to prevent tampering.
  • the data processing system 100 according to the present embodiment can be variously modified.
  • the operation content storage area 321 of the storage area 320 of the removable storage apparatus 300 may be configured as an area that prohibits reading from apparatuses other than the host apparatus 200. Thereby, browsing of operation content information from devices other than the host device 200 can be prohibited.
  • the data processing system 100 according to the present embodiment is You may deform
  • the removable storage device 300 includes a storage area in which predetermined data (hereinafter, the predetermined data is referred to as “key data”) is recorded. In this storage area, data writing and reading from the host device 200 are permitted, but data writing and reading from devices other than the host device 200 are prohibited.
  • the host device 200 is configured to be usable only when key data is read from the connected removable storage device. Therefore, when the removable storage device connected to the host device 200 is something other than the removable storage device 300 having the key data, the host device 200 cannot be used.
  • the usage amount is calculated based on the operation content information recorded in the operation content storage area 321 of the storage area 320 of the removable storage device 300, and charging is performed according to the usage amount. Is done. According to the data processing system 100 modified in this way, there is no possibility that the operation content information is falsified, so that it is possible to appropriately charge according to the usage amount.
  • the data processing system 100 according to the present embodiment or the data processing system 100 according to the modification thereof is replaced with the data processing system 100 according to the first embodiment described above or the configuration of the data processing system 100 according to the modification. Further, it may be deformed by combination with a part of the operation.
  • the data processing system 100 for example, when the host device 200 writes endoscopy data to the removable storage device 300, the writing is performed at high speed.
  • the data processing system 100 may be modified as follows.
  • the file structure of an area in which the endoscopic examination data is recorded (hereinafter referred to as an examination data storage area) in the storage area 320 is fixed, and the examination data storage area needs to be in advance. Create all files (empty files).
  • FIG. 12 is a diagram showing an example of the file configuration of the inspection data storage area.
  • an inspection data management file is created in the root directory of the examination data storage area, and a file for each endoscopic examination data is stored in each of a plurality (M) of directories in the examination data storage area.
  • M plurality
  • N endoscopic image data
  • one piece of endoscopic examination data includes one piece of patient information and a plurality (N pieces) of endoscope image data.
  • FIG. 13 is a diagram illustrating a format example of the inspection data management file.
  • the examination data management file includes information on the directory name, examination number (examination No.), examination date, and number of images for each directory (also for each endoscopic examination data).
  • the examination number is the examination number of the endoscopic examination data in the directory.
  • the examination number is a number uniquely given for each endoscopic examination. If this inspection number is empty, it indicates that the endoscopic inspection data in that directory is empty.
  • the number of images is the number of image data included in the endoscopic examination data in the directory. With the examination data management file having such a format, it is possible to recognize which endoscopic examination data is in which directory.
  • FIG. 14 is a diagram showing an example of data arrangement on the inspection data storage area.
  • a master boot record in the inspection data storage area, a master boot record, file system management information, a root directory directory entry table, a directory 1 directory entry table, and a directory 2 directory entry A table,..., A directory entry table of directory M are arranged in order. Note that these data are unchanged, and the same data as these data is also recorded in the host device 200 (except for the master boot record). At this time, these data in the removable storage device 300 are used when accessed from a device other than the host device 200. Further, the same data as these data of the host device 200 is used when the host device 200 accesses the inspection data storage area.
  • the examination data storage area further includes examination data management file data, patient information file data in the directory 1, and endoscope image data 1 file in the directory 1.
  • Endoscopic image file 1 data
  • Endoscopic image data 2 file in directory 1 Endoscopic image file 2
  • Endoscopic image data N file in directory 1
  • Internal Endoscopic image file N ..., patient information file data in directory M
  • endoscopic image data 1 file endoscopic image file 1
  • endoscopic image file 2 file in directory 1 Endoscopic image file 2
  • N Endoscopic image data N file in directory 1
  • Data Le endoscopic image file N
  • FIG. 15 is a diagram showing an example of data arrangement on the directory entry table of the root directory. As shown in FIG. 15, on the directory entry table of the root directory, the directory entries of the inspection data management file, directory 1, directory 2,.
  • FIG. 16 is a diagram showing an example of data arrangement on the directory entry table of each directory.
  • a patient information file an endoscope image data 1 file (endoscope image file 1), and endoscope image data in the directory.
  • Each of the directory entries of the second file endoscopic image file 2),...,
  • the endoscope image data N file is sequentially arranged.
  • the file system management information includes, for example, information such as the type of file system applied to the inspection data storage area, the size of logical sectors, the number of logical sectors, and the size of clusters.
  • information such as the type is FAT (File Allocation Tables)
  • FAT Fra Allocation Tables
  • information such as the number, size, and start position of the FAT is also included.
  • a recording completion flag indicating whether or not recording (writing) of endoscopic examination data from the host device 200 to the examination data storage area is completed in the nonvolatile memory of the host device 200, To be recorded.
  • the nonvolatile memory is a memory (for example, FeRAM (Ferroelectric Random Access Memory)) capable of writing and reading data at high speed.
  • the nonvolatile memory is also a memory in which endoscope inspection data is temporarily recorded before it is written into the inspection data storage area.
  • FIG. 17 is a diagram showing an example of data arrangement on the nonvolatile memory.
  • a recording completion flag and endoscopic examination data (examination number (examination No.), examination date and time, number of images (number of image data), patient information, endoscope Image data 1 (endoscopic image 1), endoscopic image data 2 (endoscopic image 2),..., Endoscopic image data N (endoscopic image N)) are sequentially arranged.
  • the endoscope inspection data is written from the host device 200 to the removable storage device 300 as follows.
  • the host device 200 determines a writing destination of endoscopy data. More specifically, the host device 200 first refers to an examination data management file (see FIG. 13) recorded in the examination data storage area and searches for a directory in which no endoscopic examination data is recorded. Alternatively, if there is no such directory, the directory in which the oldest endoscopy data is recorded is searched. Then, the searched directory is determined as a writing destination of the endoscopy data.
  • the host device 200 temporarily records the endoscopic examination data for which the writing destination is determined in the nonvolatile memory, and indicates a recording completion flag recorded in the nonvolatile memory to indicate that recording has not been completed. Update to value.
  • the data writing unit 220 of the host device 200 writes the endoscopic inspection data recorded in the nonvolatile memory to the file in the directory of the inspection data storage area determined as the writing destination.
  • the host device 200 updates the examination data management file recorded in the examination data storage area, and sets the recording completion flag recorded in the nonvolatile memory, Update to a value indicating the completion of recording.
  • the host device 200 accesses the files recorded in the inspection data storage area (for example, the inspection data management file and the file in the write destination directory) as described in the description of FIG. This is performed based on management information of the file system regarding the inspection data storage area recorded in the host device 200, the root directory, and the directory entry table of each directory. Accordingly, the host device 200 does not need to refer to the file system management information recorded in the inspection data storage area in order to access the file recorded in the inspection data storage area. Endoscopy data can be written from the host device 200 to the removable storage device 300 at high speed.
  • the inspection data storage area for example, the inspection data management file and the file in the write destination directory
  • the host device 200 determines whether or not the value of the recording completion flag recorded in the nonvolatile memory is a value indicating that recording has not been completed. If it is determined that the value indicates that recording has not been completed, the endoscopic examination data recorded in the nonvolatile memory is written into the examination data recording area of the removable storage device 300.
  • the embodiment described above shows a specific example of the present invention in order to facilitate understanding of the invention, and the present invention is not limited to the above-described embodiment.
  • the present invention can be variously modified and changed without departing from the concept of the present invention defined in the claims.

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  • Storage Device Security (AREA)

Abstract

L'invention concerne un système qui comprend un dispositif hôte et une mémoire amovible. Le dispositif hôte comprend: une unité de génération de commande de permission qui génère une commande de permission qui permet l'écriture de données du dispositif hôte à la mémoire amovible; une unité d'écriture qui écrit des données dans la mémoire amovible dans laquelle l'écriture de données depuis le dispositif hôte est permise par la commande de permission; et une unité de génération de commande d'interdiction qui génère une commande d'interdiction qui interdit l'écriture de données dans la mémoire amovible. La mémoire amovible est dotée d'une unité de réglage d'état qui, en réponse à une commande de permission, règle la mémoire amovible sur un état de permission d'écriture qui permet l'écriture de données à partir du dispositif hôte, et en réponse à une commande d'interdiction, règle la mémoire amovible sur un état d'interdiction d'écriture qui empêche l'écriture de données.
PCT/JP2015/081412 2014-12-01 2015-11-06 Système de traitement de données, dispositif hôte et mémoire amovible WO2016088512A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11931010B2 (en) 2017-03-24 2024-03-19 Covidien Lp Endoscopes and methods of treatment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08263383A (ja) * 1995-03-20 1996-10-11 Hitachi Ltd 情報処理装置
JP2003030052A (ja) * 2001-07-17 2003-01-31 Sanyo Electric Co Ltd メモリアクセス方法および装置
JP2009181176A (ja) * 2008-01-29 2009-08-13 Hitachi Information Systems Ltd 可搬記憶媒体管理システム、可搬記憶媒体管理方法、および可搬記憶媒体管理プログラム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08263383A (ja) * 1995-03-20 1996-10-11 Hitachi Ltd 情報処理装置
JP2003030052A (ja) * 2001-07-17 2003-01-31 Sanyo Electric Co Ltd メモリアクセス方法および装置
JP2009181176A (ja) * 2008-01-29 2009-08-13 Hitachi Information Systems Ltd 可搬記憶媒体管理システム、可搬記憶媒体管理方法、および可搬記憶媒体管理プログラム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11931010B2 (en) 2017-03-24 2024-03-19 Covidien Lp Endoscopes and methods of treatment

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