JP6441630B2 - Optical disc drive management apparatus, optical disc drive management method, and program - Google Patents

Description

  The present invention relates to an optical disk drive management apparatus, an optical disk drive management method, and a program therefor.

  There are two types of optical disk drives: a writable one and a non-writable ROM drive. Server devices or the like often have a non-writable drive because of security problems such as data theft. However, in terms of operation, a writable drive is more convenient.

  Patent Document 1 discloses a technique that can prevent confidential information stored in a computer from being copied and taken to a removable recording medium.

  Patent Document 2 can prevent data from being falsified (overwritten) by providing a mode changeover switch that can be physically switched between a normal mode in which a hard disk of a server system can be written and a read-only mode in which data cannot be written. The technology is disclosed.

  Patent Document 3 discloses a technique for detecting whether data has been recorded on an optical disk and preventing overwriting of data.

JP 2003-233538 A JP 2002-251324 A Japanese Patent Laid-Open No. 10-040646

  Patent Document 1 determines whether or not writing is possible based on the contents of information (flag) indicating that recording is possible / impossible to record, which is stored in a security information storage memory. For this reason, the optical disk drive cannot be made writable at the timing from when the flag switching request is issued until the flag is updated.

  In Patent Document 2, a hard disk is provided with a mode changeover switch that can be physically switched between write enable / disable. For this reason, it cannot be used in an environment where the setting to enable / disable writing to the optical disc is switched as appropriate.

  Japanese Patent Application Laid-Open No. 2003-228561 is a technique for protecting data in a flagged area by writing a non-writable flag in each data area on an optical disc and preventing overwriting of data. For this reason, it cannot be applied to suppression of writing to the entire optical disc.

  As described above, the technique used in the above-described document has a problem that it is not possible to efficiently switch between writable / unwritable to the optical disk.

  For this reason, an object of the present invention is to provide an optical disc drive capable of efficiently switching between write enable / disable on an optical disc.

An optical disk drive management apparatus according to the present invention includes a memory means for storing a writable flag indicating that data can be written to an optical disk medium, and a preset password, and a write command. When the writable flag is referred to and the writable flag indicates that the writable flag is writable, the data is written to the optical disk medium, and the writable flag indicates that the writable flag is not writable. And a control means for suppressing data writing to the optical disk medium, the control means receives a flag switching command for switching the writable flag so that the data can be written or cannot be written, The flag is turned off only when the entered password matches the set password. Based on the command, the write flag data writable or data writing impossible and so as to switch, further, the HDD drive bay for storing the HDD (Hard Disk Drive), allows the writing of data to the optical disk medium Or a change-over switch that makes the change impossible, and a drive bay cover having a physical key is attached to the HDD drive bay, and the change-over switch is housed in the HDD drive bay. Yes.

  The present invention can provide an optical disk drive capable of efficiently switching whether writing to an optical disk is possible or not.

FIG. 1 is a block diagram showing an example of the configuration of an optical disk drive management apparatus according to the first embodiment. FIG. 2 is a diagram illustrating an example of a data structure of the memory unit. FIG. 3 is a diagram illustrating an example of a configuration of the writable flag switching command. FIG. 4 is a flowchart showing the operation of the optical disc management apparatus. FIG. 5 is a block diagram showing an example of the configuration of the optical disc drive management apparatus according to the second embodiment. FIG. 6 is a block diagram showing an example of the configuration of the optical disc drive management apparatus according to the third embodiment.

  A first embodiment for carrying out the invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing an example of the configuration of the optical disk drive management apparatus 10.

  The optical disk drive management apparatus 10 includes a motherboard 20 and a built-in optical disk drive 30.

  The mother board 20 includes an I / F (InterFace) control unit 21. For example, the mother board 20 is formed of a wiring board on which various devices, circuits, and the like can be mounted.

  The I / F control unit 21 transmits a command to the control unit 31 of the built-in optical disk drive 30 in accordance with an instruction from an OS (Operating System) of the host device and software.

  The built-in optical disk drive 30 includes a control unit 31, a memory unit 32, an optical disk medium 33, and a head 34.

  The control unit 31 controls the operation of the head 34 based on the information in the memory unit 32 according to the command received from the I / F control unit 21.

  The memory unit 32 stores various types of information regarding the use of the built-in optical disk drive 30. The memory unit 32 is configured by, for example, a ROM (Read Only Memory). Details of the information stored in the memory unit 32 will be described with reference to FIG.

  The optical disk medium 33 is composed of a recording medium such as an optical disk or a magneto-optical disk. Note that the optical disk medium 33 can write and read data.

  The head 34 reads / writes data from / to the optical disc medium 33 in accordance with a command from the control unit 31. For example, the head 34 is a generic term for a laser diode, a pickup lens, an optical sensor, and the like that read and write information using laser light.

  Here, the I / F control unit 21 and the control unit 31 may each be configured by hardware such as a logic circuit. Further, the I / F control unit 21 and the control unit 31 function so that the processor of the optical disc drive management apparatus 10 that is a computer reads a program stored in a nonvolatile memory (not shown) and executes it. It may be realized.

  FIG. 2 is a diagram illustrating an example of a data structure of the memory unit 32.

  The memory unit 32 stores an inquiry data 321 for a DVD-ROM drive, an inquiry data 322 for a DVD writing drive, password information 323, a writable flag 324, and firmware 325.

  The inquiry data 321 for the DVD-ROM drive is used for the purpose of displaying various messages from the control unit 31 to the user via the I / F control unit 21 when the writable flag 324 is “not writable”.

  The inquiry data 322 for the DVD writing drive is used for the purpose of displaying various messages from the control unit 31 to the user via the I / F control unit 21 when the writable flag 324 is “writable”.

  The password information 323 stores a password set in advance (hereinafter referred to as a set password). It is assumed that the set password can be known only by a specific administrator.

  The writable flag 324 stores information indicating whether or not data can be written to the optical disc medium 33. The writable flag 324 can be switched between writable / unwritable by a writable flag switching command 40 described later. However, when the password 42 (described later) in the writable flag switching command 40 is different from the password information 323 in the memory unit 32, the writable flag 324 is not switched.

  The firmware 325 is firmware for operating the built-in optical disk drive 30. The control unit 31 operates according to the firmware 325.

  FIG. 3 is a diagram showing an example of the configuration of the writable flag switching command 40. As shown in FIG. 3, the writable flag switching command 40 includes a pass / fail flag 41 indicating the state of the writable flag 324 after switching, and a password 42.

  FIG. 4 is a flowchart showing the operation of the optical disc management apparatus 10. The operation of the optical disc management apparatus 10 will be described using the flowchart of FIG.

  First, the user turns on the optical disc management apparatus 10 (step S1). The built-in optical disk drive 30 is also turned on (step S2).

  Next, when the built-in optical disk drive 30 is turned on, the control unit 31 checks the state of the writable flag 324 in the memory unit 32 (step S3).

  At this time, depending on the state of the writable flag 324, the built-in optical disk drive 30 behaves like any one of the DVD writing drive and the DVD-ROM drive.

  If writing is impossible in step S3, the control unit 31 sets to use InquiryData for the DVD-ROM drive (step S4).

  Thereafter, the control unit 31 receives a read / write command or a writable flag switching command 40 (FIG. 3) from the I / F control unit 21 (step S5).

  In the case of a read / write command in step S5, the control unit 31 checks whether the command is a read command (step S6). Furthermore, in the case of Yes in step S6, the control unit 31 executes a read command (step S7). Further, when the answer is No in Step S6 (in the case of a write command, etc.), the control unit 31 responds with an error (Step S8).

  On the other hand, in the case of the writable flag switching command 40 in step S5, the control unit 31 further checks whether the password matches the password information 32 (step S9). In the case of Yes in step S9, the control unit 31 switches the writable flag and sets the writable flag.

  As described above, the control unit 31 compares the password information 323 in the memory unit 32 with the password 42 in the writable flag switching command 40, and sets the writable flag 324 in the memory unit 32 only when the passwords match. The state is updated to the state of the enable / disable flag 41 in the write enable flag switching command 40.

  Then, based on the updated state of the writable flag 324, the control unit 31 sets to use InquiryData for the DVD writing drive (step S10).

  Thereafter, the control unit 31 receives a read / write command or a writable flag switching command 40 from the I / F control unit 21 (step S11).

  In the case of a read / write command in step S11, the control unit 31 executes the command (step S12).

  On the other hand, in the case of the write enable flag switching command 40 in step S11, the control unit 31 further checks whether the password is correct (step S13).

  Thereafter, when writing is impossible, the control unit 31 continues the process of step S5 with the setting of step S4.

  If writing is possible in step S3, the control unit 31 continues the process of step S11 with the setting of step S10.

  As described above, in the optical disc management apparatus 10, the control unit 31 confirms whether or not the writable flag switching command 40 is received every time the read / write command is executed. Thereby, the optical disc management apparatus 10 can change the writable flag 324 when the writable flag switching command 40 is received.

  The optical disc management apparatus 10 according to the present embodiment has the following effects.

  The effect is that it is possible to provide the built-in optical disk drive 30 capable of efficiently switching between writing enable / disable to the optical disk medium 33.

The reason is that it is confirmed whether or not the write enable flag switching command 40 is received every time the read / write command is executed.
<Second Embodiment>
Next, a second embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 5 is a block diagram showing an example of the configuration of the optical disc drive management apparatus 50 according to the second embodiment.

  The optical disk drive management device 50 uses the physical changeover switch 81 in addition to the writable flag 324 in the first embodiment to switch the setting of writable / impossible of the built-in optical disk drive 70.

  The optical disk drive management device 50 includes a motherboard 60, a built-in optical disk drive 70, and an HDD (Hard Disk Drive) drive bay 80. Note that the motherboard 60 (I / F control unit 61) and the built-in optical disk drive 70 (memory unit 72, optical disk medium 73, head 74) are the same as the motherboard 20 (I / F control unit 21) of the first embodiment, The configuration is the same as that of the built-in optical disk drive 30 (the memory unit 32, the optical disk medium 33, and the head 34), and a description thereof is omitted.

The HDD drive bay 80 includes a changeover switch 81 and a hot plug HDD 82. A drive bay cover 83 is attached to the HDD drive bay 80.
The drive bay cover 83 includes a key 84. The drive bay cover 83 is, for example, a cover for preventing a user who does not have the key 84 from operating the changeover switch 81. The key 84 is a key for opening and closing the drive bay cover 83 that is held only by the administrator.

  As described above, the optical disk drive management device 50 is characterized in that the changeover switch 81 is further accommodated in the HDD drive bay 80 for storing the hot plug HDD 82. As with the writable flag 324, the changeover switch 81 allows the control unit 71 to switch the writable / unwritable state. Instead of the control unit 71, the administrator may be able to physically switch the changeover switch 81. However, in this case, it is assumed that the control unit 71 recognizes all the above switching contents.

  With the above configuration, the optical disc drive management device 50 uses the physical changeover switch 81 to switch the setting of writable / impossible of the built-in optical disc drive 70 even when the writable flag 324 is temporarily unavailable. Is possible. That is, the control unit 71 selects either the changeover switch 81 or the writable flag 324 as appropriate. As a result, the optical disk drive management device 50 can continue to operate even when a failure occurs in the write enable flag 324, for example.

  Note that the operation of the optical disk drive management device 50 in this embodiment is merely to temporarily replace the operation of the write enable flag 324 in the first embodiment with the changeover switch 81. Therefore, the operation of the optical disk drive management device 50 is the same as that in FIG.

  The optical disk drive management device 50 according to the present embodiment has the following effects.

  The effect is that the optical disk drive management device 50 can continue to operate even when a failure occurs in the writable flag 324.

The reason is that, in addition to the writable flag 324, the physical changeover switch 81 is used to switch the setting of writable / impossible of the built-in optical disk drive 70.
<Third embodiment>
Next, a third embodiment for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 6 is a block diagram showing an example of the configuration of the optical disc drive management apparatus 90 according to the third embodiment.

  The optical disk drive management device 90 includes a control unit 91, a memory unit 92, and an optical disk medium 95. The memory unit 92 includes a writable flag 93 and a setting password 94.

  The optical disk drive management device 90 includes a memory unit 92 that stores a writable flag 93 indicating whether data can be written to or cannot be written to the optical disk medium 95, and a preset setting password 94. Further, the optical disk drive management device 90 includes a control unit 91. The control unit 91 receives a write command or a flag switching command for switching the writable flag 93 every time a write / read command is executed. When the input password matches the set password 94, the control unit 91 switches the writable flag 93 based on the flag switching command, and when the writable flag 93 is writable, based on the write command, Data is written to the optical disk medium 95.

  The optical disc management apparatus 90 according to the present embodiment has the following effects.

  The effect is to provide an optical disc drive capable of efficiently switching between writable / impossible to the optical disc medium 95.

  The reason is that every time a read / write command is executed, it is confirmed whether a write enable flag switching command has been received.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the said embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Optical disk drive management apparatus 20 Motherboard 21 I / F control part 30 Built-in optical disk drive 31 Control part 32 Memory part 321 InquiryData for DVD-ROM drives
322 InquiryData for DVD writing drive
323 Password information 324 Writable flag 325 Firmware 33 Optical disk medium 34 Head 40 Writable flag switching command 41 Allowable / impossible flag 42 Password 50 Optical disk drive management device 60 Motherboard 61 I / F control unit 70 Built-in optical disk drive 71 Control unit 72 Memory unit 73 Optical disk medium 74 Head 80 HDD drive bay 81 Changeover switch 82 Hot plug HDD
83 Drive Bay Cover 84 Key 90 Optical Disk Drive Management Device 91 Control Unit 92 Memory Unit 93 Writable Flag 94 Setting Password 95 Optical Disk Medium

Claims (2)

Memory means for storing a writable flag indicating that data can be written to or cannot be written to the optical disc medium, and a preset password.
Each time a write command is executed, the writable flag is referred to, and when the writable flag indicates that writable, data is written to the optical disk medium, and the writable flag is not writable. Control means for inhibiting data writing to the optical disc medium,
The control means receives a flag switching command for switching the writable flag so that data can be written or data cannot be written, and only when the input password matches the set password, Based on this, the writable flag is switched so that data can be written or data cannot be written,
And an HDD drive bay for storing an HDD (Hard Disk Drive) and a changeover switch for switching to enable or disable data writing to the optical disk medium,
A drive bay cover having a physical key is attached to the HDD drive bay,
An optical disk drive management apparatus in which the changeover switch is housed in the HDD drive bay . The optical disk drive management apparatus according to claim 1, wherein the flag switching command includes the input password.

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