JP2009104684A - Library device, medium management method for library device, drive for discarding optical disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a library device for completely preventing information leakage of an optical disk, and to provide a medium management method for the library device, and a drive for discarding an optical disk. <P>SOLUTION: The library device includes: a first drive 105 for recording/reproducing information to/from the optical disk 120; a second drive 104 for detecting the quality of recorded data for predicting a life of the optical disk; a third drive 101 for destroying and erasing the recorded data of the expired optical disk; a main control unit 108 for performing backup control to copy the recorded data of the expired optical disk 120, and a media slot 103 for removing the destroyed and erased optical disk 120 to the outside of the casing 200. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a library apparatus, a medium management method for the library apparatus, and an optical disc discarding drive, and more particularly to a library apparatus, a medium management method for the library apparatus, and an optical disc discarding drive capable of performing destructive erasure of an optical disc and avoiding data leakage.

  The optical disk library apparatus automatically stores an optical disk and writes / reads data in a housing. In general, data is erased when the optical disk is discarded, after the discard optical disk is manually taken out of the housing, the data is destroyed by a dedicated erasing device.

  Thus, techniques related to data destruction of write-once optical disks include those described in Patent Documents 1 and 2, for example.

  Japanese Patent Application Laid-Open No. 2004-228561 is a technique that enables copy prohibition information to be moved by making the original copy prohibition information unreadable when recording copy prohibition information recorded on a write-once optical disc on another optical disc. It is. For this reason, when the information recorded on the write-once optical disc is copy prohibition information, writing to the write-once optical disc with a laser of a predetermined intensity, and either management information, file system, user data, or management information and user data Destroy both.

  Japanese Patent Application Laid-Open No. 2004-228561 is a technology that enables a non-copyable content to be moved to another medium using a write-once medium without a data erasing unit. For this reason, after all the data to be moved is temporarily stored in the recording apparatus in a unique format that cannot be analyzed by other devices, the write-once medium at the movement source is destroyed, and then the data is written to the movement destination medium.

  Further, as a technique related to the life of the recording medium, there is a technique described in Patent Document 3.

  Japanese Patent Application Laid-Open No. 2004-133867 is a technique for eliminating user anxiety about the progress of deterioration of a recording medium. For this reason, when the error rate exceeds a predetermined threshold value per unit time, the disk reproducing device determines the deterioration of the disk and generates a signal instructing backup. In addition, the threshold value for deterioration determination is changed to an appropriate value in accordance with the state of scratches on the recording surface, the warp / vibration of the disc, data compression, and the recording method.

JP 2006-155816 A JP 2006-120218 A JP 2006-164332 A

  The above-mentioned general optical disk library apparatus needs to take out the discard optical disk out of the housing and transport it to the erasing apparatus, and there is a problem that data may leak during this time.

  In addition, the techniques described in Patent Documents 1 and 2 can prevent illegal copying to another write-once optical disc after the information on the original write-once optical disc is destroyed. However, the write-once optical disk is free to handle during the stage before the information is destroyed by mounting the write-once optical disk on the optical disk device. Therefore, the above technique has a problem that there is a risk of information leakage of the write-once optical disc in the stage before destruction.

  Furthermore, the technique described in Patent Document 3 determines whether a disk has deteriorated and backs up. After the backup, there is no particular description regarding the handling of the backup source disk. Therefore, Patent Document 3 has a problem that there is a risk of information leakage using the backup source disk after the backup and before the disposal process is performed.

  An object of the present invention is to provide a library apparatus, a medium management method for the library apparatus, and an optical disc disposal drive that can completely prevent the information leakage of the optical disc described above.

  The library apparatus of the present invention includes an optical disc, a storage shelf for storing the optical disc, a first drive for recording and reproducing information on the optical disc, and a second drive for detecting the quality of recorded data for predicting the life of the optical disc. A third drive for destructively erasing the recorded data of the optical disc predicted to have a life, a moving mechanism for moving the optical disc among the storage shelf, the first drive, the second drive, and the third drive, and a moving mechanism It is characterized by having a movement control unit for controlling, a main control unit for performing backup control for copying the recording data of the optical disk whose life has been predicted, and a discharge port for taking out the destructively erased optical disk to the outside of the housing.

  The medium management method for a library apparatus according to the present invention is characterized in that only an optical disk whose data has been destroyed and erased is ejected from the housing.

  The medium management method of the library apparatus according to the present invention includes a step of recording / reproducing information on an optical disc by a first drive, a step of storing the optical disc in a storage shelf, a step of moving the optical disc from the storage shelf to a second drive, When the second drive detects the quality of the recording data for predicting the life of the optical disk, performs the life prediction determination based on the quality data, Moving the optical disk to the first drive, copying the recorded data of the optical disk reaching the end of its life to a new optical disk, moving the copied new optical disk from the first drive to the storage shelf, and Moving the arriving optical disk from the second drive to the third drive; and Performing the destructive erasure in the third drive, moving the destructively erased optical disc from the third drive to the discharge port, and determining that the optical disc has not reached the end of its life, Moving from the drive to the storage shelf.

  The optical disc disposal drive of the present invention has a destructive erasing unit that destroys the recording layer of the optical disc or plastically deforms the substrate, and the destructive erasing unit includes a complete erasing unit and a simple erasing unit corresponding to the type of the optical disc. It is characterized by having.

  The library apparatus and the medium management method of the library apparatus according to the present invention have an effect of completely preventing data leakage of the optical disk.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic block diagram showing a first embodiment of a library apparatus 100 of the present invention.

  Referring to FIG. 1, the library apparatus 100 includes a housing 200, an optical disk 120, a media storage shelf 114, a first drive 105, a second drive 104, a third drive 101, and a media moving mechanism unit 106. The medium movement control unit 107 and the main control unit 108 are configured.

  The optical disk 120 is, for example, a CD-R (Compact Disk-Recordable), a DVD-R (Digital Versatile Disk-Recordable), a DVD ± R, a BD-R (Blue Ray Disk-Recordable), or an HD DVD-R HighHigh Readable. Media such as Versatile Disk-Recordable).

  The media storage shelf 114 stores the optical disc 120. In addition, a media slot 102 for loading the optical disk 120 from the outside of the housing 200 is provided adjacent to the media storage shelf 114.

  The first drive 105 (hereinafter referred to as a read / write optical disc drive 105) is readable and writable with respect to the optical disc 120 such as a CD-R, DVD-R, DVD ± R, BD-R, HD DVD-R, for example. It is a drive.

  The second drive 104 (hereinafter referred to as the error rate confirmation / read / write optical disk drive 104) is readable / writable with respect to the optical disk 120, and has means for acquiring the collectable read error number 126 and the error rate 127 of the optical disk 120. Prepare.

  The third drive 101 (hereinafter referred to as an optical disk media erasing drive 101) performs destructive erasure of data on the optical disk 120 that is predicted to have reached the end of its life. Further, the optical disc media erasing drive 101 is provided with a media outlet 103 for taking out only the optical disc 120 that has been destroyed and erased to the outside of the housing 200, and can access the media outlet 103 only from the optical disc media erasing drive 101 (not shown). ).

  The medium moving mechanism unit 106 includes an accessor mechanism that moves the optical disk 120 between the medium storage shelf 114, the read / write optical disk drive 105, the error rate confirmation / read / write optical disk drive 104, and the optical disk medium erasure drive 101. The accessor mechanism is a known mechanism and will not be described in detail.

  The media movement control unit 107 performs control for the media movement mechanism unit 106 to move the optical disc 120 from the designated position of the movement source to the designated position of the movement destination.

  The main control unit 108 includes a backup control unit 1082 that performs control to copy the recording data of the optical disc 120 that is predicted to have reached the end of life, a drive lock mechanism 140, an optical disc media erasing drive 101, and an error rate confirmation / read / write optical disc drive. 104, an optical disk drive 105 for read / write, and an operation control unit 1083 for controlling the media movement control unit 107. The main control unit 108 specifically includes a CPU (Central Processing Unit), a semiconductor memory, and the like.

  The housing 200 includes, for example, a drive lock mechanism 140 schematically shown in FIG. The drive lock mechanism 140 locks the read / write optical disc drive 105, the error rate confirmation / read / write optical disc drive 104, the optical disc media erasing drive 101, and the media storage shelf 114 to the housing 200. When the media outlet 103 and the media slot 102 are provided independently, the drive lock mechanism 140 is configured to lock the media outlet 103 and the media slot 102 instead of the optical disk media erasing drive 101 and the media storage shelf 114. And FIG. 4 shows a schematic configuration when the read / write optical disk drive 105 is locked to the housing 200 as an example.

  Referring to FIG. 4, the drive lock mechanism 140 is fixed to the housing 200. The drive lock mechanism 140 includes a solenoid 141, a spring 142 that applies a biasing force in a direction in which the shaft 143 of the solenoid 141 protrudes to the outside, a stopper 145 that is attached to the shaft 143, and a housing case 144 that regulates the protruding position of the shaft 143. Consists of.

  The read / write optical disk drive 105 is provided with a hole 202 on a side surface. The drive lock mechanism 140 is configured to lock the read / write optical disk drive 105 when the shaft 143 is inserted into the hole 202.

  FIG. 4 shows a state in which the power source of the solenoid 141 is off, and the drive lock mechanism 140 is configured to suck the shaft 143 and release the lock only when the power source is on.

  Accordingly, the drive lock mechanism 140 inserts the shaft 143 into the hole 202 and locks it to the housing 200 even when the optical disk 120 is loaded and remains inside while the power is off. The drive 105 cannot be removed. When the read / write optical disk drive 105 is replaced by maintenance personnel, the main control unit 108 detects that the optical disk 120 is in an unloaded state (the state where there is no optical disk 120), and turns on the power of the solenoid 141. The lock is released by performing control.

  In addition, the housing 200 has a structure that is hermetically sealed by a lock (not shown) so that a person cannot access the inside of the housing 200 except that the optical disk 120 is inserted from the media insertion slot 102.

  Next, the operation of the library apparatus 100 configured as described above will be described with reference to the drawings.

  FIG. 6 is a flowchart for explaining the operation of the library apparatus 100 when the optical disk 120 is inserted into the housing 200.

  Referring to FIG. 6, when the optical disc 120 is inserted into the media insertion slot 102 (S601), the media moving mechanism unit 106 moves the optical disc 120 from the media insertion slot 102 to the position of the error rate confirmation / read / write optical disc drive 104. Move and load (load) (S602).

  The error rate confirmation / read / write optical disc drive 104 checks the writing state of the optical disc 120 (S603). When the optical disc 120 is not yet written and there is no data to be written at present (S604), the media moving mechanism unit 106 moves the optical disc 120 to the media storage shelf 114 (S606).

  When the inserted optical disk 120 has been written or there is data to be written in the unwritten optical disk 120 (S604), and after writing the data (S605), the error rate confirmation / read / write optical disk The drive 104 checks the quality for predicting the life of the optical disc 120 (specifically, the number of correctable read errors 126 and error rate 127 described later) (S607).

  It is determined whether or not the lifetime is reached (S608), and if the correctable read error number 126 and the error rate 127 are less than a certain number (when it is determined that the lifetime is not reached), the media moving mechanism unit 106 transfers the optical disk to the media storage shelf 114. 120 is moved and stored (S609).

  If the number of collectable read errors 126 and the error rate 127 is equal to or greater than a certain number (when it is determined that the life is long), the presence / absence of a new optical disk 120 is determined in the media storage shelf 114 (S610). The mechanism unit 106 takes out the new optical disk 120 from the media storage shelf 114 and inserts it into the read / write optical disk drive 105 (S612). If there is no new optical disk 120 in the media storage shelf 114, the new optical disk 120 is loaded into the media slot 102 (S611).

  The media moving mechanism unit 106 takes out the new optical disc 120 from the media insertion slot 102 and inserts it into the read / write optical disc drive 105 (S612).

  The backup control unit 1082 copies the data of the optical disk 120 having the correctable read error number 126 and the error rate 127 of a certain number or more onto the new optical disk 120 (S613).

  The media moving mechanism unit 106 takes out the copy source optical disc 120 from the error rate confirmation / read / write optical disc drive 104, moves it to the media storage shelf 114, and temporarily stores it (S614).

  The medium moving mechanism unit 106 takes out the copy destination new optical disk 120 from the read / write optical disk drive 105, moves it to the error rate confirmation / read / write optical disk drive 104, and inserts it (S615).

  The error rate confirmation / read / write optical disk drive 104 confirms the number 126 of correctable read errors and the error rate 127 of the new optical disk 120 (S616).

  It is determined whether or not the lifetime is reached (S617), and if the correctable read error number 126 and error rate 127 of the new optical disk 120 are less than a certain number, the media moving mechanism unit 106 moves the copy source optical disk 120 to the media storage shelf 114. Is moved to the optical disk media erasing drive 101 and inserted (S618).

  The optical disc media erasing drive 101 destroys and erases the data on the copy source optical disc 120 (S619). The medium moving mechanism unit 106 takes out the optical disk 120 that has been destructively erased from the optical disk medium erasing drive 101, moves it to the medium ejection port 103, and ejects it (S620).

  The medium moving mechanism unit 106 takes out the new optical disk 120 of the copy destination from the error rate confirmation / read / write optical disk drive 104, moves to the shelf position of the media storage shelf 114 where the copy source optical disk 120 was stored, and stores it (see FIG. S621).

  In the above (S617), when the error rate confirmation / read / write optical disc drive 104 determines that the life of the new optical disc 120 is the correctable read error number 126 and the error rate 127, the media moving mechanism unit 106 The optical disc 120 is moved to the optical disc media erasing drive 101 and loaded. After destructively erasing data with the optical disk media erasing drive 101, the media moving mechanism unit 106 takes out the new optical disk 120 that has been destructively erased from the optical disk media erasing drive 101, moves it to the media outlet 103, and ejects it (S622). The medium moving mechanism unit 106 takes out the copy source optical disk 120 from the medium storage shelf 114, moves it to the error rate confirmation / read / write optical disk drive 104, and loads it (S623). Thereafter, the process returns to the above (S610).

  On the other hand, when data is written to the unwritten optical disc 120 in the media storage shelf 114, the media moving mechanism unit 106 takes out the unwritten optical disc 120 from the media storage shelf 114 (S624), and checks the error rate / read / write. The optical disk drive 104 is moved and loaded (S625). The error rate confirmation / read / write optical disc drive 104 writes data to the optical disc 120 (S626). Thereafter, the process proceeds from the above (S607).

  As described above, the library apparatus 100 described above has an effect that data leakage of the optical disk 120 can be prevented by ejecting only the optical disk 120 whose data has been destroyed and erased to the outside of the housing 200.

  Further, the library apparatus 100 is provided with a drive lock mechanism 140 in the housing 200 that is configured to lock in a state where the power is not turned on. The drive lock mechanism 140 includes a read / write optical disc drive 105, an error rate confirmation / read / write optical disc drive 104, an optical disc media erasing drive 101, and a media storage shelf 114 (referred to as each location of the optical disc 120) to the housing 200. Lock it. Therefore, while the optical disc 120 is inside each location, each location cannot be removed, and the optical disc 120 cannot be ejected to the outside of the housing 200 for each location. There is an effect that leakage can be more completely prevented.

  Next, a second embodiment of the library apparatus 300 of the present invention will be described with reference to the drawings.

  FIG. 2 is a schematic configuration block diagram showing a second embodiment of the library apparatus 300.

  Referring to FIG. 2, the library apparatus 300 includes a housing 200, an optical disk 120, a media storage shelf 114, a first drive 105, a second drive 104, a third drive 101, and a media moving mechanism unit 106. A media movement control unit 107, a main control unit 308, a magnetic disk 130, an external interface unit 113, an operation mode selection switch 111 (hereinafter referred to as an operation mode selection SW 111), and an operation mode display unit 112. To do. The same components as those of the library apparatus 100 of the first embodiment described above are denoted by the same reference numerals.

  The main control unit 308 includes a monitoring unit 1081 in addition to the backup control unit 1082 and the operation control unit 1083. The monitoring unit 1081 monitors an operation mode DB 110 described later.

  The library apparatus 300 is different in that the library apparatus 300 includes a magnetic disk 130, an external interface unit 113, an operation mode selection SW 111, and an operation mode display unit 112 as constituent elements in addition to the library apparatus 100. Only the following will be described with emphasis.

  The library apparatus 300 includes a magnetic disk 130 as an example of a storage unit. The magnetic disk 130 associates specific information, storage position information, quality information, and detection date / time information of the optical disk 120 into a database (hereinafter abbreviated as DB), and stores various information as the operation mode DB 110 (see FIG. 3). .

  Referring to FIG. 3, the operation mode DB 110 includes a new optical disk position / unwritten flag DB 1101, an optical disk position / number of errors / error rate DB 1102, a media standard information DB 1103, an optical disk drive information DB 1104, an erase operation mode DB 1105, a default operation parameter DB 1106, Consists of.

  Referring to FIG. 7, the new optical disc position / unwritten flag DB 1101 includes various types of information such as a media type 121, a media label name 122, an unwritten flag 123, and a media storage position 124.

  Referring to FIG. 8, the optical disc position / number of errors / error rate DB 1102 includes a media type 121, a media label name 122, a recorded used capacity (number of sectors) 125, a media storage position 124, a collectable read error number 126, an error rate. 127 and various information of confirmation date 128 are provided.

  Referring to FIG. 9, the media standard information DB 1103 includes various types of information such as a media type 121, a sector length 151, a total sector number 152, a collectable read error number threshold value 153, and an error rate threshold value 154.

  Referring to FIG. 10, the optical disc drive information DB 1104 includes various types of information such as a drive type 161, a drive model number 162, a command specification 163, and optical disc compatibility information 164.

  Referring to FIG. 11, the erasing operation mode DB 1105 includes various information on a complete erasing mode 171 corresponding to the media type 121 and a simple erasing mode 172. The complete erase mode 171 and the simple erase mode 172 each include parameter information for destructive erase. The parameter information for destructive erasure includes the light beam spot intensity, the speed at which the light beam reciprocates in the radial direction of the optical disk 120, and the optical disk 120 when the light beam reaches the innermost and outermost positions of the recording data area. An angle of rotation and a media surface temperature are provided.

  Referring to FIG. 12, the default operation parameter DB 1106 stores default operation parameters for easily performing destructive erasure of data on the optical disc 120 when the erasure operation mode DB 1105 is not selected. The default operation parameter DB 1106 is also used when erasing the optical disc 120 in which neither the complete erase mode 171 nor the simple erase mode 172 of the erase operation mode DB 1105 is specified.

  The external interface unit 113 is a connection control module having interfaces such as RS232C, USB (Universal Serial Bus), modem, and LAN (Local Area Network) connected to a server computer, personal computer, information terminal device, etc. (not shown). When an optical disk drive that does not exist in the operation mode DB 110 (not stored in the operation mode DB 110) is changed and mounted in the library apparatus 300, the external interface unit 113 collects information on the optical disk drive and compatibility information with the optical disk 120. Used when. The external interface unit 113 is used when collecting standard information of the optical disc 120 when an optical disc 120 that does not exist in the operation mode DB 110 is inserted.

  The operation mode selection SW 111 is a switch using a push button (not shown) or the like, and selects an erase operation mode.

  The operation mode display unit 112 is a display unit such as a 7-segment LED (Light Emitting Diode) or an LCD (Liquid Crystal Display), and monitors the state of the operation mode selection SW 111 and displays an erase operation mode, an operation result, and the like.

  Needless to say, the operation mode selection SW 111 and the operation mode display unit 112 are provided outside the housing 200 that can be operated and viewed by maintenance personnel, operators, and the like.

  Next, the operation of the library apparatus 300 configured as described above will be described with reference to the drawings.

  FIG. 13 is a flowchart for explaining the operation of the library apparatus 300 when the optical disk 120 is inserted into the housing 200.

  Referring to FIG. 13, when the optical disc 120 is inserted into the media insertion slot 102 (S1301), the media moving mechanism unit 106 moves the optical disc 120 from the media insertion slot 102 to the position of the error rate confirmation / read / write optical disc drive 104. Move and load (load) (S1302).

  The error rate confirmation / read / write optical disk drive 104 checks the writing state of the optical disk 120 (S1303) and determines whether there is data to be written (S1304).

  When the optical disk 120 is not yet written and there is no data to be written, the monitoring unit 1081 refers to the operation mode DB 110, confirms the availability of the media storage shelf 114, the media storage position 124, the media type 121, and the media label name. 122, the information of the unwritten flag 123 is associated and registered in the new optical disc position / unwritten flag DB 1101 (S1306).

  After registering various information, the media moving mechanism unit 106 moves the optical disc 120 to the media storage shelf 114 (S1307).

  When the inserted optical disk 120 has been written, or when there is data to be written on the unwritten optical disk 120 and the data has been written (S1305), the error rate confirmation / read / write optical disk drive 104 Then, the quality (the number of collectable read errors 126 and the error rate 127) for performing the life prediction of the optical disk 120 is confirmed (S1308).

  It is determined whether or not the lifetime is reached (S1309), and if the correctable read error number 126 and the error rate 127 are less than a predetermined number (when it is determined that the lifetime is not reached), the media moving mechanism unit 106 transfers the optical disk to the media storage shelf 114. 120 is moved and stored (S1310). After the storage, the monitoring unit 1081 refers to the operation mode DB 110, stores the media storage position 124 of the media storage shelf 114, specific information (media label name 122, used capacity (number of sectors) 125, media type 121), and quality information. The information of (collectable read error number 126 and error rate 127) and confirmation date 128 is associated with each other and registered in the optical disc position / number of errors / error rate DB 1102 (S1311).

  When the number of collectable read errors 126 and the error rate 127 is equal to or greater than a certain number (when determined to be a lifetime), the monitoring unit 1081 searches the operation mode DB 110 (S1312) and determines whether there is a new optical disk 120. (S1313).

  If there is a new optical disc 120 in the media storage shelf 114, the media moving mechanism unit 106 takes out the new optical disc 120 from the media storage shelf 114 and inserts it into the read / write optical disc drive 105 (S1316). If there is no new optical disk 120 in the media storage shelf 114, the main control unit 308 performs control to display the operation mode display unit 112 to insert the new optical disk 120 (S1314). The maintenance staff inserts a new optical disc 120 into the media insertion slot 102 by looking at the displayed content (S1315).

  The media moving mechanism unit 106 takes out the new optical disc 120 from the media insertion slot 102 and inserts it into the read / write optical disc drive 105 (S1316).

  The backup control unit 1082 copies the data of the optical disk 120 having a correctable read error number 126 and an error rate 127 of a certain number or more onto the new optical disk 120 (S1317).

  The media moving mechanism unit 106 takes out the copy source optical disc 120 from the error rate confirmation / read / write optical disc drive 104, moves it to the media storage shelf 114, and temporarily stores it (S1318).

  The medium moving mechanism unit 106 takes out the new optical disk 120 as the copy destination from the read / write optical disk drive 105, moves it to the error rate confirmation / read / write optical disk drive 104, and inputs it (S1319).

  The error rate confirmation / read / write optical disc drive 104 confirms the correctable read error number 126 and the error rate 127 of the new optical disc 120 (S1320).

  It is determined whether or not the lifetime is reached (S1321), and when the correctable read error number 126 / error rate 127 of the new optical disk 120 is less than a certain number, the media moving mechanism unit 106 moves the copy source optical disk 120 to the media storage shelf 114. Is moved to the optical disk media erasing drive 101 and inserted (S1322).

  The main control unit 308 causes the operation mode display unit 112 to display an erase mode selection screen and default operation parameters for erasing data on the copy source optical disc 120 (S1323).

  The operator refers to the display content of the operation mode display unit 112 and selects an erasing operation mode corresponding to the optical disc 120 by the operation mode selection SW 111 (S1324).

  The optical disc media erasing drive 101 destroys and erases the data on the copy source optical disc 120 (S1325).

  Here, referring to FIG. 11, as an example, a destructive erase operation when the optical disc 120 is DVD-R and the complete erase mode 171 is selected as the erase operation mode will be briefly described below.

  The optical beam spot intensity is 150 W (watts) using a light source such as halogen or xenon, the optical beam driving speed is 6 seconds / edge, the rotation angle at the outermost circumference and the rotation angle at the innermost circumference are both 8 degrees, and the optical disc 120 Destructive erasing operation is performed at a surface temperature of 250 ° C.

  First, the output of the light beam spot is started, the surface temperature of the optical disk 120 is measured by a temperature sensor (not shown), and the light beam spot is moved from the innermost circumference to the outermost circumference with the temperature maintained at 250 degrees. The optical disk 120 is rotated 8 degrees on the outer periphery. Next, the light beam spot is moved from the outermost periphery to the innermost periphery, and the optical disc 120 is rotated by 8 degrees on the innermost periphery. This operation is repeated until the optical disk 120 is rotated once. The method of maintaining the surface temperature of the optical disk 120 at a constant temperature (250 degrees) is that a light beam spot control unit (not shown) reduces the light beam spot intensity when the measured value of the temperature sensor is higher than the set value. When the temperature is low, control is performed to increase the intensity of the light beam spot.

  The destructive erasure is performed by destroying a recording layer (not shown) of the optical disc 120 or destroying a substrate (not shown) by plastic deformation, thereby erasing for disposal. The selection between the destruction of the recording layer and the destruction of the substrate is performed according to the set value of the surface temperature of the optical disk 120.

  The medium moving mechanism unit 106 takes out the destructively erased optical disk 120 from the optical disk medium erasing drive 101, moves to the medium discharge port 103, and discharges it (S1326). The medium moving mechanism unit 106 takes out the new optical disk 120 of the copy destination from the error rate confirmation / read / write optical disk drive 104, moves to the shelf position of the media storage shelf 114 where the copy source optical disk 120 was stored, and stores it (see FIG. S1327).

  After storing in the media storage shelf 114, the monitoring unit 1081 associates information of the media storage position 124, the media label name 122, the used capacity (number of sectors) 125, the number of collectable read errors 126, the error rate 127, and the confirmation date 128 with the optical disk. Registration in the position / number of errors / error rate DB 1102 (S1328).

  In the above (S1321), when the error rate confirmation / read / write optical disc drive 104 determines that the life of the new optical disc 120 is 126, and the error rate 127 is a lifetime, The optical disc 120 is moved to the optical disc media erasing drive 101 and loaded. After destructively erasing the data with the optical disk media erasing drive 101, the media moving mechanism unit 106 takes out the new optical disk 120 that has been destructively erased from the optical disk media erasing drive 101, moves to the media outlet 103, and ejects it (S1329). The media moving mechanism unit 106 takes out the copy source optical disc 120 from the media storage shelf 114, moves it to the error rate confirmation / read / write optical disc drive 104, and loads it (S1330). Thereafter, the process returns to (S1312).

  On the other hand, when writing data to the unwritten optical disk 120 in the media storage shelf 114, the media moving mechanism unit 106 takes out the unwritten optical disk 120 from the media storage shelf 114 (S1331), and confirms the error rate / read / write. The optical disk drive 104 is moved and loaded (S1332). The error rate confirmation / read / write optical disc drive 104 writes data to the optical disc 120 (S 1333), and then proceeds to the above (S 1308) and thereafter.

  As described above, in the above-described library apparatus 300, the maintenance staff refers to the display content of the operation mode display unit 112 and only selects the erasing operation mode with the operation mode selection SW 111, so that the data is automatically destroyed and erased. There is an effect that can be executed.

  Further, the library apparatus 300 associates various information such as the media storage location 124, the media label name 122, the used capacity (number of sectors) 125, the collectable read error number 126, the error rate 127, and the confirmation date 128 of the optical disc 120 with the operation mode DB 110. Is registered. Therefore, the library apparatus 300 can extract the optical disk 120 that has reached the end of its life due to secular change when the optical disk 120 is inserted, and can ensure the reliability of all the optical disks 120 in the housing 200 by backing up the data. effective.

  Next, the operation of the library apparatus 300 when managing the optical disk 120 in the housing 200 will be described with reference to the drawings.

  FIG. 14 is a flowchart for explaining the operation of the library apparatus 300 when managing the optical disk 120 in the housing 200.

  Referring to FIG. 14, the media moving mechanism unit 106 receives the error rate confirmation / recovery from the media storage shelf 114 for the optical disk 120 that has not been checked for the correctable read error number 126 and the error rate 127 for a certain period (for example, 6 months). Move to the read / write optical disk drive 104 and load (load) it (S1401).

  The error rate confirmation / read / write optical disc drive 104 measures the number of correctable read errors 126 and the error rate 127, refers to the optical disc position / number of errors / error rate DB 1102, and compares the present measurement value with the previous measurement result. (S1402).

  In the error rate confirmation / read / write optical disc drive 104, whether or not the current measured values are less than the correctable read error threshold value 153 and the error rate threshold value 154, and whether the measured value is an increase or fluctuation less than a certain number. It is determined whether or not (S1403).

  When the measured values are both less than the correctable read error number threshold value 153 and the error rate threshold value 154 and increase or fluctuate below a certain number compared to the previous measurement result, the media moving mechanism unit 106 moves the optical disk 120 to the It moves to the original shelf position of the media storage shelf 114 and stores it. After storing in the media storage shelf 114, the monitoring unit 1081 associates information of the media storage position 124, the media label name 122, the used capacity (number of sectors) 125, the number of collectable read errors 126, the error rate 127, and the confirmation date 128 with the optical disk. Registration in the position / number of errors / error rate DB 1102 (S1404).

  Whether or not the increase is less than a certain number applies to the number of correctable read errors 126, and whether or not the fluctuation is within a certain number applies to the error rate 127. Regarding the error rate 127, if a certain number is set to 2, for example, when the ratio of the current measurement value to the previous measurement value is 1 or more and less than 2, it is determined that the fluctuation is less than the certain number.

  In the above (S1403), when the measured value is the correctable read error number threshold value 153 or more, the error rate threshold value 154 or more, or when there is an increase or fluctuation of a certain number or more compared with the previous measurement result, the monitoring unit 1081 operates. The mode DB 110 is searched (S1405), and it is determined whether there is a new optical disk 120 (S1406).

  If there is a new optical disc 120 in the media storage shelf 114, the media moving mechanism unit 106 takes out the new optical disc 120 from the media storage shelf 114 and inserts it into the read / write optical disc drive 105 (S1409). If there is no new optical disk 120 in the media storage shelf 114, the main control unit 308 instructs the operation mode display unit 112 to display the new optical disk 120 (S1407). The operator sees the displayed content and inserts a new optical disc 120 into the media insertion slot 102 (S1408).

  The media movement mechanism unit 106 takes out the new optical disc 120 from the media insertion slot 102 and inserts it into the read / write optical disc drive 105 (S1409).

  The backup control unit 1082 copies the data of the optical disk 120 having a correctable read error number 126 and an error rate 127 of a certain number or more onto the new optical disk 120 (S1410).

  The media moving mechanism unit 106 takes out the copy source optical disc 120 from the error rate confirmation / read / write optical disc drive 104, moves it to the media storage shelf 114, and temporarily stores it (S1411).

  The medium moving mechanism unit 106 takes out the new optical disk 120 as the copy destination from the read / write optical disk drive 105, moves to the error rate confirmation / read / write optical disk drive 104, and inserts it (S1412).

  The error rate confirmation / read / write optical disk drive 104 confirms the number 126 of correctable read errors and the error rate 127 of the new optical disk 120 (S1413).

  It is determined whether or not the lifetime is reached (S1414), and if the correctable read error number 126 / error rate 127 of the new optical disk 120 is less than a certain number, the media moving mechanism unit 106 moves the copy source optical disk 120 to the media storage shelf 114. Is moved to the optical disk medium erasing drive 101 and inserted (S1415).

  The main control unit 308 causes the operation mode display unit 112 to display an erase operation mode selection screen and default operation parameters for erasing data on the copy source optical disc 120 (S1416).

  The operator refers to the display content of the operation mode display unit 112 and selects an erasing operation mode corresponding to the optical disc 120 by the operation mode selection SW 111 (S1417).

  The optical disc media erasing drive 101 destroys and erases the data on the copy source optical disc 120 (S1418). The medium moving mechanism unit 106 takes out the destructively erased optical disk 120 from the optical disk medium erasing drive 101, moves it to the medium discharge port 103, and discharges it (S1419).

  The medium moving mechanism unit 106 takes out the new optical disk 120 of the copy destination from the error rate confirmation / read / write optical disk drive 104, moves to the shelf position of the media storage shelf 114 where the copy source optical disk 120 was stored, and stores it (see FIG. S1420).

  After storing in the media storage shelf 114, the monitoring unit 1081 associates information of the media storage position 124, the media label name 122, the used capacity (number of sectors) 125, the number of collectable read errors 126, the error rate 127, and the confirmation date 128 with the optical disk. Registration in the position / number of errors / error rate DB 1102 (S1421).

  In the above (S1414), when the error rate confirmation / read / write optical disc drive 104 determines that the life of the new optical disc 120 is the correctable read error number 126 and the error rate 127, the media moving mechanism unit 106 The optical disc 120 is moved to the optical disc media erasing drive 101 and loaded. After destroying and erasing data with the optical disk media erasing drive 101, the media moving mechanism unit 106 takes out the new optical disk 120 that has been destroyed and erased from the optical disk media erasing drive 101, moves it to the media ejection port 103, and ejects it (S1422). The medium moving mechanism unit 106 takes out the copy source optical disk 120 from the medium storage shelf 114, moves it to the error rate confirmation / read / write optical disk drive 104, and loads it (S1423). Thereafter, the process returns to (S1405).

  On the other hand, when performing additional writing (additional writing) of data to the written optical disc 120 in the media storage shelf 114, the media moving mechanism unit 106 takes out the written optical disc 120 from the media storage shelf 114 (S1424), and the error rate. Move to the confirmation / read / write optical disk drive 104 and insert (S1425). The error rate confirmation / read / write optical disc drive 104 writes data to the optical disc 120 (S1426), and then proceeds to the above (S1402) and thereafter.

  As described above, the library apparatus 300 periodically checks the number 126 of correctable read errors and the error rate 127 of the optical disk 120, stores them in the operation mode DB 110, and compares the previous measurement value with the current measurement value. The life expectancy is judged.

  Therefore, the library apparatus 300 has an effect that the reliability of all the optical disks 120 in the casing 200 can be ensured by extracting and backing up the optical disks 120 that have reached the end of their lifetime due to secular change before the occurrence of a failure. .

  Next, operations when the read / write optical disk drive 105 and the error rate confirmation / read / write optical disk drive 104 are replaced / changed will be described with reference to the drawings.

  FIG. 15 is a flowchart for explaining the operation of the library apparatus 300 when a drive is exchanged / changed.

  Referring to FIG. 15, the monitoring unit 1081 determines whether or not the optical disk 120 is loaded (loaded) in the error rate confirmation / read / write optical disk drive 104 and the read / write optical disk drive 105 (S1501). ).

  When the optical disk 120 is inserted, the drive lock mechanism 140 locks the error rate confirmation / read / write optical disk drive 104 and the read / write optical disk drive 105, and therefore cannot be replaced / changed (S1502). The error rate confirmation / read / write optical disc drive 104 and the read / write optical disc drive 105 can be exchanged / changed only when the optical disc 120 is not inserted therein.

  The monitoring unit 1081 refers to the optical disk drive information DB 1104 to check whether there is compatibility information on the error rate confirmation / read / write optical disk drive 104 and the read / write optical disk drive 105 to be exchanged / changed and newly installed in the housing 200. Judgment is made (S1503). For example, when replacing / changing to a next generation optical disk drive (not shown) or the like, the monitoring unit 1081 confirms the optical disk compatibility information 164 corresponding to the next generation optical disk drive in the optical disk drive information DB 1104.

  Error rate confirmation / read / write optical disc drive 104 to be exchanged / changed When optical disc compatibility information 164 of the read / write optical disc drive 105 does not exist in the optical disc drive information DB 1104 (for example, next-generation optical disc drive information and corresponding optical disc compatibility) When there is no information 164), the monitoring unit 1081 obtains next-generation optical disc drive information and optical disc compatibility information 164 via the external interface unit 113. The monitoring unit 1081 associates the acquired next-generation optical disc drive information with the optical disc compatibility information 164 and registers them in the optical disc drive information DB 1104 (S1504).

  The monitoring unit 1081 determines whether or not the next-generation optical disk drive is backward compatible (whether or not the optical disk 120 contained in the library apparatus 300 can be read and written as it is) (S1505).

  When the next-generation optical disk drive to be replaced / changed is backward compatible, the error rate confirmation / read / write optical disk drive 104 and the read / write optical disk drive 105 are simultaneously replaced / changed (S1506). When the next generation optical disc 120 enters, the next generation optical disc drive writes data to the next generation optical disc 120.

  When the next-generation optical disk drive to be exchanged / changed is not backward compatible, the library apparatus 300 needs to replace all the optical disks 120 with the next-generation optical disks 120. Therefore, the library apparatus 300 is first replaced / changed to the next-generation optical disk drive only for the error rate confirmation / read / write optical disk drive 104 (S1507).

  In the library apparatus 300, the next generation optical disk 120 corresponding to the replaced next generation optical disk drive is inserted from the media insertion slot 102 (S1508). The monitoring unit 1081 determines whether or not the information of the next-generation optical disc 120 that has been input exists in the media standard information DB 1103 (S1509).

  When the information of the next generation optical disc 120 does not exist in the media standard information DB 1103, the monitoring unit 1081 receives the information of the collectable read error number threshold value 153 and the error rate threshold value 154 via the external interface unit 113, and the next generation information. The standard information (sector length 151, total number of sectors 152) of the optical disk 120 is obtained.

  The monitoring unit 1081 associates the acquired collectable read error number threshold value 153 and error rate threshold value 154 information with the standard information of the next-generation optical disc 120 and registers them in the media standard information DB 1103 (S1510).

  The backup control unit 1082 sequentially copies the data on all the optical discs 120 to the next generation optical disc 120. After copying, the monitoring unit 1081 checks the error rate check / correction read error number 126 and error rate 127 of the next-generation optical disc 120 copied by the read / write optical disc drive 104 (S1511). The monitoring unit 1081 correlates the information of the media storage position 124, the media label name 122, the used capacity (the number of sectors) 125, the collectable read error number 126, the error rate 127, and the confirmation date 128 to the optical disc position / number of errors / error rate DB 1102. Register with

  The medium moving mechanism unit 106 moves and inputs the copy source optical disk 120 to the optical disk medium erasing drive 101 (S1512), and moves the next generation optical disk 120 to the shelf position of the media storage shelf 114 that has stored the copy source optical disk 120. Is moved and stored (S1513).

  The optical disc media erasing drive 101 erases the data on the optical disc 120, and after erasing, the media moving mechanism unit 106 moves the optical disc 120 to the media outlet 103 and ejects it (S1514). When erasure and ejection of all the copy source optical disks 120 are completed, the maintenance staff replaces / changes the read / write optical disk drive 105 (S1515).

  As described above, in the library apparatus 300, the monitoring unit 1081 obtains the optical disc drive information and the optical disc compatibility information 164 via the external interface unit 113. Therefore, the library apparatus 300 collects, stores, and exchanges / changes information corresponding to all the optical disk drives and optical disks 120 existing in the market even when various information of the optical disk drive to be exchanged / changed does not exist inside. Is possible.

  Further, the library apparatus 300 sequentially copies the data of all the copy source optical discs 120 to the new optical disc 120, erases all the copy source optical discs 120 with the optical disc media erase drive 101, and ejects them. There is an effect that information leakage can be completely prevented even at the time of exchange / change.

  Next, a third embodiment of the library apparatus 400 of the present invention will be described with reference to the drawings.

  FIG. 5 is a schematic configuration block diagram showing a third embodiment of the library apparatus 400. The same components as those of the library apparatus 300 of the second embodiment described above are denoted by the same reference numerals.

  Referring to FIG. 5, the library apparatus 400 is different in that a temperature / humidity sensor unit 115 and an air conditioner / air volume adjustment unit 116 are added to the library apparatus 300 as constituent elements. Focus on the explanation.

  The temperature / humidity sensor unit 115 includes a temperature / humidity sensor (not shown) for managing the temperature / humidity of each part inside the housing 200. The temperature / humidity sensor unit 115 manages the temperature and humidity of the media storage shelf 114, the error rate confirmation / read / write optical disk drive 104, the read / write optical disk drive 105, and the like.

  The air conditioner / air volume adjustment unit 116 adjusts the temperature / humidity over a certain period of time when the temperature / humidity changes over time.

  The temperature / humidity sensor unit 115 and the air conditioner / air volume adjustment unit 116 operate under the control of the main control unit 308.

  The above-described library apparatus 400 manages the temperature and humidity in the housing 200, so that the life of the optical disk 120 to be stored is extended and the operation of the read / write optical disk drive 105 loaded with the optical disk 120 is stabilized. There is an effect that can be.

It is a schematic block diagram showing a first embodiment of a library apparatus of the present invention. It is a schematic block diagram which shows 2nd Example of the library apparatus of this invention. It is a figure which shows the storage information of a magnetic disc. It is a schematic block diagram which shows a drive lock mechanism. It is a schematic block diagram which shows 3rd Example of the library apparatus of this invention. It is a flowchart for demonstrating operation | movement of 1st Example of the library apparatus of this invention. It is a figure for demonstrating new optical disk position / unwritten flag DB. It is a figure for demonstrating optical disk position / error number / error rate DB. It is a figure for demonstrating media specification information DB. It is a figure for demonstrating optical disk drive information DB. It is a figure for demonstrating erase operation mode DB. It is a figure for demonstrating default operation parameter DB. It is a flowchart for demonstrating the operation | movement at the time of throwing in the optical disk of the library apparatus of 2nd Example of this invention in a housing | casing. It is a flowchart for demonstrating the operation | movement at the time of managing the optical disk of the library apparatus of 2nd Example of this invention within a housing | casing. It is a flowchart for demonstrating the operation | movement at the time of replacement | exchange / change of the drive of the library apparatus of 2nd Example of this invention.

Explanation of symbols

100, 300, 400 Library device 101 Optical disk media erasing drive 102 Media input port 103 Media discharge port 104 Error rate confirmation / read / write optical disk drive 105 Read / write optical disk drive 106 Media movement mechanism unit 107 Media movement control unit 108, 308 Main Control unit 1081 Monitoring unit 1082 Backup control unit 1083 Operation control unit 110 Operation mode DB
1101 New optical disk position / unwritten flag DB
1102 Optical disc position / number of errors / error rate DB
1103 Media Standard Information DB
1104 Optical disk drive information DB
1105 Erase operation mode DB
1106 Default operation parameter DB
111 Operation mode selection SW
112 Operation mode display section 113 External interface section 114 Media storage shelf 115 Temperature / humidity sensor section 116 Air conditioner / air volume adjustment section 120 Optical disk 121 Media type 122 Media label name 123 Unwritten flag 124 Media storage position 125 Used capacity (number of sectors)
126 Number of collectable read errors 127 Error rate 128 Date of confirmation 130 Magnetic disk 140 Drive lock mechanism 141 Solenoid 142 Spring 143 Shaft 144 Housing case 145 Stopper 151 Sector length 152 Total number of sectors 153 Collectable read error count threshold 154 Error rate threshold 161 Drive type 162 Drive model number 163 Command specification 164 Optical disc compatibility information 171 Complete erase mode 172 Simple erase mode 200 Case 202 Hole

Claims (24)

An optical disc, a storage shelf for storing the optical disc, a first drive for recording / reproducing information on the optical disc, a second drive for detecting the quality of recorded data for predicting the lifetime of the optical disc, and the lifetime and prediction A third drive for destructively erasing the recorded data of the optical disc, a moving mechanism for moving the optical disc among the storage shelf, the first drive, the second drive, and the third drive; A movement control unit that controls the movement mechanism unit, a main control unit that performs backup control to copy the recording data of the optical disk that has been predicted to have a life, and a discharge port that takes out the destructively erased optical disk to the outside of the housing A library device characterized by this. Storage means for storing the specific information, storage position information, quality information, and detection date information of the optical disc in association with each other, an operation mode display section for displaying a selection screen for an erase operation mode of the third drive, and the erase operation mode 2. The library apparatus according to claim 1, further comprising: an operation mode selection means for selecting the external interface, and an external interface unit connected to an external computer. 3. The library apparatus according to claim 1, wherein the optical disc has a write-once medium. The library apparatus according to claim 1, wherein the second drive has means for periodically detecting quality. 5. The library apparatus according to claim 1, wherein the quality of the recording data has a number of correctable read errors or an error rate. 6. The library apparatus according to claim 5, wherein the life prediction is performed based on the number of collectable read errors or the error rate with respect to a threshold value, or the increase number of the collectable read errors with respect to time or the rate of change of the error rate. . The library apparatus according to claim 1, wherein the third drive has the discharge port. The library apparatus according to claim 1, wherein the third drive includes a destruction erasure unit for discarding the recording layer of the optical disc or plastically deforming the substrate. The movement control unit moves the optical disc from which the recording data for disposal has been erased to the discharge port, and moves the optical disc predicted to be out of life or the copied copy destination optical disc to the storage shelf. 9. The library apparatus according to claim 1, wherein control is performed. 3. The storage device according to claim 2, wherein the storage unit includes a magnetic disk, and stores the specific information, storage position information, quality information, and detection date / time information of the optical disk in a database on the magnetic disk in association with each other. Library device. 11. The library apparatus according to claim 2, wherein the specific information includes a type, a label name, and a recorded capacity of the optical disc. The storage means stores the erase operation mode in a database, and the erase operation mode has a complete erase mode and a simple erase mode corresponding to the type of the optical disc. The library device according to any one of 11. 13. The library apparatus according to claim 12, wherein the complete erase mode and the simple erase mode each have a parameter for the destructive erase. 14. The library apparatus according to claim 2, wherein the storage unit stores a default operation parameter for performing the destructive erase when the erase operation mode is not selected. 3. The library apparatus according to claim 1, wherein the housing includes a drive lock mechanism that locks the first drive, the second drive, and the third drive so that they cannot be removed from the housing. 4. . The library apparatus according to claim 2, wherein the external interface unit receives specification information of the optical disc or the optical disc drive. A medium management method for a library apparatus, wherein only an optical disk whose data has been destroyed and erased is ejected from the housing. To record / reproduce information to / from the optical disk by the first drive, to store the optical disk in a storage shelf, to move the optical disk from the storage shelf to the second drive, and to predict the life of the optical disk Detecting the quality of the recorded data with the second drive, performing a life prediction determination based on the quality data, and determining that the optical disk has reached the end of its life when the optical disk has reached the end of its life. Moving to the first drive; copying the recording data of the optical disk reaching the end of its life to the new optical disk; and moving the copied new optical disk from the first drive to the storage shelf. The optical disk reaching the end of its life is transferred from the second drive to the third drive. A step of performing destructive erasure of the optical disc by the third drive, a step of moving the optical disc that has been destructively erased from the third drive to an ejection port, and when it is determined that the optical disc has not reached the end of its life Moving the optical disk that has not reached the end of its life from the second drive to the storage shelf. Storing the specific information, storage position information, quality information, and detection date / time information of the optical disc in association with storage means, displaying a selection screen of the erasing operation mode of the third drive on the operation mode display unit, 19. The medium management method for a library apparatus according to claim 18, wherein the step of selecting the erasing operation mode by an operation mode selection means and the step of connecting to an external computer via an external interface unit are executed. 20. The medium management method for a library apparatus according to claim 18, wherein the second drive periodically performs a quality detection step. The quality of the recording data has the number of correctable read errors or the error rate, and the life prediction determination is performed by determining the number of correctable read errors or the error rate with respect to a threshold, 21. The medium management method for a library apparatus according to claim 18, wherein the determination is made based on a change rate of an error rate. 19. The medium management method for a library apparatus according to claim 18, wherein the third drive executes the destructive erasing step for destroying the recording layer of the optical disc or plastically deforming the substrate. An optical disc comprising: a destructive erasing unit that destroys a recording layer of an optical disc or plastically deforming a substrate, and the destructive erasing unit includes a complete erasing unit and a simple erasing unit corresponding to the type of the optical disc. Discard drive. The destructive erasing means moves the optical disc when the light beam reaches the innermost position and the outermost position of the recording data area, and the speed at which the light beam reciprocates in the radial direction of the optical disk. 24. The optical disk discarding drive according to claim 23, wherein the rotation angle is a parameter.

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