WO2009113553A1 - 光ディスクドライブ装置 - Google Patents
光ディスクドライブ装置 Download PDFInfo
- Publication number
- WO2009113553A1 WO2009113553A1 PCT/JP2009/054581 JP2009054581W WO2009113553A1 WO 2009113553 A1 WO2009113553 A1 WO 2009113553A1 JP 2009054581 W JP2009054581 W JP 2009054581W WO 2009113553 A1 WO2009113553 A1 WO 2009113553A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- cache
- control unit
- recorded
- address
- Prior art date
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/0802—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches
- G06F12/0866—Addressing of a memory level in which the access to the desired data or data block requires associative addressing means, e.g. caches for peripheral storage systems, e.g. disk cache
- G06F12/0873—Mapping of cache memory to specific storage devices or parts thereof
-
- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0608—Saving storage space on storage systems
-
- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0611—Improving I/O performance in relation to response time
-
- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0656—Data buffering arrangements
-
- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/068—Hybrid storage device
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/21—Employing a record carrier using a specific recording technology
- G06F2212/211—Optical disk storage
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/21—Employing a record carrier using a specific recording technology
- G06F2212/214—Solid state disk
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/21—Employing a record carrier using a specific recording technology
- G06F2212/214—Solid state disk
- G06F2212/2146—Solid state disk being detachable, e.g.. USB memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/21—Employing a record carrier using a specific recording technology
- G06F2212/217—Hybrid disk, e.g. using both magnetic and solid state storage devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/22—Employing cache memory using specific memory technology
- G06F2212/222—Non-volatile memory
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/60—Details of cache memory
- G06F2212/601—Reconfiguration of cache memory
- G06F2212/6012—Reconfiguration of cache memory of operating mode, e.g. cache mode or local memory mode
-
- 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
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0674—Disk device
- G06F3/0677—Optical disk device, e.g. CD-ROM, DVD
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
- G11B2007/0006—Recording, reproducing or erasing systems characterised by the structure or type of the carrier adapted for scanning different types of carrier, e.g. CD & DVD
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10527—Audio or video recording; Data buffering arrangements
- G11B2020/1062—Data buffering arrangements, e.g. recording or playback buffers
- G11B2020/1075—Data buffering arrangements, e.g. recording or playback buffers the usage of the buffer being restricted to a specific kind of data
- G11B2020/10759—Data buffering arrangements, e.g. recording or playback buffers the usage of the buffer being restricted to a specific kind of data content data
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2541—Blu-ray discs; Blue laser DVR discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2545—CDs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
Definitions
- the present invention relates to an optical disc drive apparatus having a function of reading at least data recorded on an optical disc.
- Disc recording media including optical discs such as CD (Compact Disc), DVD (Digital Versatile Disc) and BD (Blu-ray Disc) allow random access that allows direct access to the location of the target data. is there.
- CD Compact Disc
- DVD Digital Versatile Disc
- BD Blu-ray Disc
- an optical disk drive that reads / writes information from / to an optical disk has a lower access speed than a magnetic disk device such as a hard disk.
- an operating system (OS) environment of a computer is often shared between different computers, that is, different computers are operated in the same OS environment.
- the OS since it is necessary to take out and carry the medium on which the OS data is recorded, the OS is operated using an optical disc drive device that can take out the medium.
- the optical disk drive device has a drawback that the access speed is slower than that of the hard disk.
- the access time is determined by a seek time which is a time until the head is moved to a predetermined position on the disk, or a disk rotation waiting time which is a time until a predetermined sector is read by the head. Therefore, in order to shorten the access time, it is necessary to shorten the seek time by improving the actuator or shorten the rotation waiting time by increasing the number of rotations of the disk. However, the shortening of the access time due to the improvement of such devices is almost reaching its limit, and means different from the improvement of the device are required to further reduce the access time.
- Patent Document 1 discloses a magnetic disk device in which access time is shortened by mounting a nonvolatile memory. Specifically, the apparatus of Patent Document 1 assigns a logical address to a nonvolatile memory and treats it as a logical sector on the magnetic disk, whereby the magnetic disk and the nonvolatile memory are virtually integrated as a recording medium. . Thus, when reading / writing data recorded in the nonvolatile memory, the access speed is improved as compared to reading / writing data from / to the magnetic disk.
- Japanese Patent Publication Japanese Patent Laid-Open No. 06-314177 (Publication Date: November 8, 1994)”
- Patent Document 1 has a problem that the access speed is not improved when reading and writing data recorded on the magnetic disk because the magnetic disk and the nonvolatile memory are virtually integrated.
- a cache memory for recording the data recorded on the magnetic disk as so-called cache data must be installed.
- the cache memory cannot record data other than cache data. That is, when the capacity of data recorded on the disk is smaller than the recordable capacity of the cache memory, there is a problem that the surplus capacity of the cache memory is wasted.
- the present invention has been made in view of the above problems, and its main object is to provide a nonvolatile memory capable of reducing the access time during random access and recording data other than cache data.
- An optical disk drive device is provided.
- an optical disk drive device including a nonvolatile memory, When a first address is input via the first interface, it is read from the sector specified by the first address of the optical disc and recorded in the nonvolatile memory in association with the first address.
- Cache control means for reading data stored in the non-volatile memory in association with the first address when the cache data is read or when the cache data cannot be read, Data control for reading data from the non-volatile memory based on a second address input via the second interface, or writing data input via the second interface to the non-volatile memory Means, It is characterized by having.
- the nonvolatile memory can be used as a so-called cache memory that records cache data in accordance with an interface to which an address is input, and also a data memory that records data other than cache data.
- cache memory that records cache data in accordance with an interface to which an address is input
- data memory that records data other than cache data.
- the nonvolatile memory when used as the cache memory, the data recorded on the optical disk can be read from the cache data recorded in the nonvolatile memory having a shorter time required for data reading than the optical disk drive device. The time for reading data from the optical disc can be reduced. Further, since the nonvolatile memory can be used as a data memory in addition to being used as a cache memory, data other than the cache data can be recorded in a recording area where no cache data is recorded.
- the optical disk drive device can shorten the access time at the time of random access and can effectively utilize the recording area which is redundant in the nonvolatile memory.
- the optical disk drive device since the non-volatile memory functioning as the data memory is provided in the optical disk drive device, the data recorded on the optical disk can be moved without going through the bus with the host connected to the optical disk drive device. can do. As a result, it is possible to eliminate the need for data encryption and decryption required for output via an external bus. Therefore, the optical disk drive device has an effect that data recorded on the optical disk can be moved to the nonvolatile memory at high speed without imposing a load on the host to which the optical disk drive is connected.
- the data control means secures an area for writing data requested to be written through the second interface by deleting the cache data.
- the recording of data other than the cache data has priority over the maintenance of the cache data. That is, the size of the recording area used as the cache memory in the nonvolatile memory is appropriately changed according to the size of the recording area used as the data memory.
- an area that can be used as a cache memory that can record cache data, and an area that can be used as a data memory that can record data other than cache data are recorded in the non-volatile memory. Can be distributed without any waste.
- the optical disk drive apparatus further includes disk detection means for detecting storage of the optical disk, and when the storage of the optical disk is detected by the disk detection means, the cache control means records on the optical disk. It is preferable to write the stored data in the nonvolatile memory in association with the first address.
- the data recorded on the stored optical disc can be automatically recorded in the nonvolatile memory as cache data.
- data recorded on the optical disk can be recorded as cache data without forcing the user to perform troublesome work.
- the cache control means may further include the cache data that is read based on the first address by data input through the first interface together with the first address. Is preferably overwritten.
- the data to be recorded on the optical disc is overwritten on the cache data recorded in the nonvolatile memory.
- the cache data recorded in the nonvolatile memory can always be the latest data.
- the cache control means writes the overwritten cache data back to the sector specified by the first address.
- the overwritten cache data is written back to a predetermined sector of the optical disc. That is, data to be overwritten in the nonvolatile memory is written on the optical disk.
- the cache data is deleted from the non-volatile memory, the data recorded on the optical disc can be updated.
- the optical disc drive apparatus further comprises identification information acquisition means for acquiring identification information recorded on the optical disc in order to distinguish the optical disc from other optical discs, If the identification information of the optical disc that records the data recorded in the nonvolatile memory as the cache data does not match the identification information acquired by the identification information acquisition means, the cache data is initialized. Is preferable.
- the stored optical disk is the same as the optical disk that was most recently stored, and is recorded in the non-volatile memory only if not the same. Initialize cached data.
- the cache data can be maintained as it is, so that the process of recording the data recorded on the optical disk as the cache data can be omitted. Play.
- the data recorded on the optical disc is an OS
- the time required to start the OS can be shortened.
- the optical disc drive apparatus further comprises identification information creating means for identifying the optical disc from other optical discs, and data writing means for writing the identification information created by the identification information creating means onto the optical disc. It is preferable to provide.
- the identification information created in the optical disk drive device can be added to the optical disk.
- the identification information can be added even if the identification information is not previously added to the optical disc.
- a program for operating the optical disc drive apparatus according to the present invention which is characterized in that the computer is driven as each of the above-described means, and a computer-readable recording medium on which the program is recorded are also included in the present invention. Included in the category.
- FIG. 1 It is a block diagram which shows the principal part structure of the hybrid BD drive which concerns on this invention. It is a schematic diagram which shows typically the recording area of flash memory. It is a flowchart which shows the system starting operation
- FIG. It is a flowchart which shows the operation
- FIG. 4 is a schematic diagram schematically showing a change in a recording area of a flash memory, in which (a) shows generation of a cache data recording area, (b) shows generation of a data recording area, and (c) shows The change from the cache data recording area to the data recording area is shown. It is a flowchart which shows the recognition operation
- Hybrid BD drive (optical disk drive) 2 Flash control section 3 Interface control section 4 Disk control section (disk detection means, data writing means) 5 Optical pickup 6 Switch control unit 7 Flash memory (non-volatile memory) 8 Blu-ray disc (optical disc) 10 data line control unit 11 data processing control unit (cache control means, data control means) 12 Address control unit 13 Interface (first interface) 14 Interface (second interface) 100 Host computer
- Embodiment 1 (Configuration of hybrid BD drive 1) An embodiment of an optical disk drive apparatus according to the present invention will be described below with reference to FIGS.
- FIG. 1 is a block diagram showing a main configuration of a hybrid BD drive (optical disc drive apparatus) 1.
- the hybrid BD drive 1 includes a flash control unit 2, an interface control unit 3, a disk control unit (optical disk detection unit, data writing unit) 4, an optical pickup 5, a switch control unit 6, a flash memory (nonvolatile). Memory) 7 and a Blu-ray disc (BD; optical disc) 8.
- the hybrid BD drive 1 is connected to the host computer 100 via the interface control unit 3. Strictly speaking, the BD 8 and the host computer 100 are not members constituting the hybrid BD drive 1, but are shown in FIG. 1 for convenience in order to facilitate understanding of the present invention.
- hybrid BD drive in this specification and the like is a BD drive equipped with a flash memory. That is, the “hybrid BD drive” refers to an apparatus that hybridizes an optical disk drive and a recording medium.
- an optical disk drive device that stores a BD as an optical disk is described as an example.
- the optical disk to be stored is not limited to a BD.
- the optical disk drive apparatus according to the present invention may be an optical disk drive apparatus that stores an optical disk other than a BD such as a CD and a DVD.
- housing (mounting) an optical disc means that the optical disc is set in a readable or writable state in the optical disc drive apparatus. The function of each member constituting the hybrid BD drive 1 will be described below.
- the interface control unit 3 controls the interface of the hybrid BD drive 1 that is connected to the interface of the host computer 100. As illustrated in FIG. 1, the interface control unit 3 includes an interface (first interface) 13 and an interface (second interface) 14.
- a data line (bus) extending from the interface 13 is connected to the flash control unit 2 and the disk control unit 4.
- a data line (bus) extending from the interface 14 is connected to the flash control unit 2. That is, data input via the interface 13 is sent to the flash control unit 2 or the disk control unit 4, and data input via the interface 14 is sent to the flash control unit 2.
- Examples of the interfaces 13 and 14 include SATA (Serial AT attachment), USB (Universal Serial Bus), IEEE 1394, and SCSI (Small Computer System Interface).
- SATA Serial AT attachment
- USB Universal Serial Bus
- SCSI Serial Computer System Interface
- the interfaces 13 and 14 are preferably SATA or USB.
- ATA AT attachment
- PATA whose transfer method is parallel may be used.
- the interfaces 13 and 14 may be different types of interfaces or the same type of interfaces.
- flash control unit 2 The flash controller 2 writes data into the flash memory 7 or reads data from the flash memory 7 based on data (for example, addresses) input via the interfaces 13 and 14. Further, the data recorded in the flash memory 7 is written into the BD 8. That is, the flash control unit 2 can appropriately change the operation according to which interface the input data is input through. As shown in FIG. 1, the flash control unit 2 includes a data line control unit 10, a data processing control unit (cache control unit, data control unit) 11, and an address control unit 12.
- the data line control unit 10 controls the flow of data input via each interface. Specifically, whether the data line control unit 10 is data (first address) input via the interface 13 or data (second address) input via the interface 14. Is detected and the information is output to the data processing control unit 11. Further, in response to an instruction from the switch control unit 6 to be described later, a data line (bus) connected to each interface is recognized.
- the data processing control unit 11 controls reading of data from the flash memory 7 or writing of data to the flash memory 7. Specifically, the data processing control unit 11 performs a writing process and a reading process according to the data line detected by the data line control unit 10, that is, the interface through which the data is sent. The data processing control unit 11 also controls data writing from the flash memory 7 to the BD 8. Detailed processing of the data processing control unit 11 will be described in detail below.
- the address control unit 12 executes processing (reading or writing) instructed by the data processing control unit 11. That is, the address control unit 12 reads data recorded at a certain address of the flash memory from the data processing control unit 11 or writes the instructed data to the flash memory 7.
- the disk control unit 4 controls processing for the BD 8 such as data read control from the BD 8, data write control to the BD 8, and storage detection of the BD 8. Specifically, the disk control unit 4 controls data writing to the BD 8 based on the data input via the interface 13 and the data input via the flash control unit 2. The disk control unit 4 outputs the data read from the BD 8 to the host computer via the interface 13 and also outputs it to the flash control unit 2.
- the optical pickup 5 is driven based on an instruction from the disk control unit 4.
- the optical pickup 5 includes a light source and a light receiving unit for reading data recorded from the BD 8 and writing data to the BD 8.
- switch control unit 6 controls a switch for setting a data line connected to the host computer 100 via the interfaces 13 and 14.
- the switch in the switch control unit 6 sets which one of the data line connecting the interface 14 and the flash control unit 2 and the data line connecting the interface 13 and the flash control unit 2 to operate, or both of them to operate. To do.
- the data line control unit 10 establishes a data line with each interface in the interface control unit 3.
- the switch controlled by the switch control unit 6 may be a hardware switch or a software switch.
- the flash memory 7 is a non-volatile memory in which the stored content does not disappear even when the power is turned off.
- the flash memory 7 functions as a cache memory that temporarily records data recorded on the BD 8 as cache data, and also functions as a data memory that records data other than cache data. That is, in the flash memory 7, data other than cache data can be recorded in an area where no cache data is recorded.
- the host PC 100 may be configured to recognize this data memory as a hard disk drive, or may be configured to recognize as another storage device.
- FIG. 2 is a schematic diagram schematically showing the recording area of the flash memory 7.
- the flash memory 7 has a cache data recording area for recording cache data and a data recording area for recording data other than the cache data.
- the cache data recording area is a recording area when functioning as a cache memory
- the data recording area is a recording area when functioning as a data memory.
- the flash memory 7 is assigned addresses from 00 000 000 to 10 000 000 (unit K) as physical addresses, and as a corresponding logical address (virtual address), From 10 000 000 addresses to 00 000 000 addresses (unit K) are allocated.
- the cache recording area is recorded in order from the physical address 00000000, and the data other than the cache data is recorded in order from the physical address 10000000 (logical address 00000000 000).
- the present invention is not limited to this, and the setting can be appropriately changed depending on address control.
- the physical addresses from 00 000 000 to 3 000 000 are used as the cache data storage area, and the physical addresses from 3 000 000 to 10 000 000 are used as the data storage area.
- Allocation between the cache data recording area and the data recording area can be set as appropriate. The allocation of the cache data recording area and the data recording area will be described in detail below. An area where neither cache data nor data other than cache data is recorded is an empty area.
- the flash memory 7 may be a NAND flash memory or a NOR flash memory.
- cache data in this specification and the like refers to data recorded in the BD 8 and recorded in the flash memory 7.
- the “cache memory” in this specification and the like temporarily records data recorded on the BD 8, and when data is read to the BD 8, the data is not stored on the BD 8 but on the flash memory.
- 7 refers to a memory (recording medium) having a function of reading from the memory 7.
- FIG. 3 is a flowchart showing the system starting operation in the hybrid BD drive 1.
- the host computer 100 requests the hybrid BD drive 1 to start the OS (step S1). That is, the host computer 100 requests the hybrid BD drive 1 to read out data necessary for starting the OS from the BD 8.
- the request (BD8 address) input from the host computer 100 is input to the flash control unit 2 via the interface 13.
- the flash control unit 2 determines whether the data requested from the host computer 100 is recorded in the flash memory 7 (step S2).
- step S3 When the data requested from the host computer 100 is recorded in the flash memory 7 (Yes in step S2), the flash control unit 2 reads the corresponding data from the flash memory 7 (step S3). The read data is output to the host computer 100 via the interface 13 (step S6).
- the disk control unit 4 drives the optical pickup 5 and reads the requested data from the BD 8 (step S2). S4).
- the read data is output to the host computer 100 via the interface 13 (step S6). At this time, the read data is also sent to the flash controller 2. Then, the flash control unit 2 writes the read data in the flash memory 7 (step S5). Steps S5 and S6 are not limited to this order, and may be reversed.
- FIG. 4 is a flowchart showing a data processing operation in the hybrid BD drive 1.
- the host computer 100 requests the hybrid BD drive 1 to read data from the flash memory 7 (step S10). That is, the host computer 100 outputs the logical address of the flash memory 7 in which requested data is recorded to the hybrid BD drive 1. At this time, the logical address of the flash memory 7 input from the host computer 100 is sent to the flash control unit 2 via the interface 14.
- the flash control unit 2 converts the logical address of the flash memory 7 input from the host computer 100 into the physical address of the flash memory 7 (step S11).
- the flash controller 2 reads data from the flash memory 7 based on the converted physical address (step S12). Specifically, the flash control unit 2 reads data recorded in an area specified by the converted physical address. The read data is output to the host computer 100 via the interface 14 (step S13).
- the flash controller 2 is an area where no data is recorded in the flash memory 7, that is, an empty area, and is written from the host computer 100 in order from the smallest logical address.
- the writing method is not limited to this.
- FIG. 5A when data 2 is deleted and data 4 is written in the data recording area where data 1, 2 and 3 are recorded, As shown in b), the file chain is stretched, the data 4 is distributed, and random access occurs. That is, in the data recording area used as the data memory, the conventional file system can be used as it is, like the USB flash memory and the hard disk drive. Note that the arrows in FIGS. 5A and 5B indicate the order of logical addresses.
- the hybrid BD drive 1 is requested to read a 1-byte data value “55” from the area specified by the physical address 1234 of the BD 8 from the host computer 100 via the interface 13. I will give you a description.
- the data line control unit 10 When the data line control unit 10 detects a read request of the BD 8 via the interface 13, the data line control unit 10 sends the data recorded in the area specified by the physical address 1234 via the interface 13 to the data processing control unit 10. Outputs that a read request has been received.
- the data processing control unit 11 receives input from the data line control unit 10 and executes processing when using the flash memory 7 as a cache memory. That is, the data processing control unit 11 determines whether the data recorded in the area specified by the physical address 1234 of the BD 8 is recorded in the flash memory 7 with respect to the address control unit 12. Instruct.
- the cache data recorded in the flash memory 7 is recorded in association with the physical address of the BD 8. That is, if the data value recorded in the area specified by the physical address 1234 is “55”, “123455” is recorded in the flash memory 7. In other words, the data recorded in the BD 8 is recorded in the flash memory 7 with the physical address “1234” of the BD 8 as a tag and the data value “55” as a data field.
- the address control unit 12 searches for cache data having the physical address 1234 address received from the host computer 100 as a tag. When the cache data having “1234” as a tag is hit, the data value “55” is extracted from the data field recorded in association therewith. When the data value “55” is extracted, the data line control unit 10 outputs the extracted data value “55” to the host computer 100 via the interface 13 to which the physical address is input.
- the data processing control unit 11 instructs the disk control unit 4 to read the data at the physical address 1234.
- the disk control unit 4 drives the optical pickup 5 to read the data value “55” from the area specified by the physical address 1234 of the BD 8.
- the disk control unit 4 outputs the read data value “55” to the host computer 100 via the interface 13.
- the disk control unit 4 outputs the read data value “55” to the host computer 100 and also sends the data “55” to the data line control unit 10.
- the data line control unit 10 has received a request from the data processing control unit 11 to write the data value “55” read from the area specified by the physical address 1234 of the BD 8 as cache data to the flash memory 7. Output.
- the data processing control unit 11 instructs the address control unit 12 to record the physical address 1234 and the data value “55” in association with each other.
- the address control unit 12 Upon receiving the instruction, the address control unit 12 records data “123455” in which the physical address 1234 is associated with the data value “55” in the flash memory 7. At this time, the data “123455” is stacked and recorded in order from the smallest address of the flash memory 7.
- cache data recorded in the flash memory 7 is initialized (erased) when the BD 8 is replaced.
- the initialization of cache data by replacing the BD 8 will be described in detail below.
- the data line control unit 10 When the data line control unit 10 detects a read request to the flash memory 7 via the interface 14, the data line control unit 10 sends the data processing control unit 10 from the interface 14 to the area specified by the logical address 00000000 of the flash memory 7. Outputs that a data read request has been received.
- the data processing control unit 11 receives an input from the data line control unit 10 and executes processing when using the flash memory 7 as a recording medium. That is, the data processing control unit 11 converts the input logical address 00 000 000 into the physical address 10 000 000 of the corresponding flash memory 7. Then, the data processing control unit 11 instructs the address control unit 12 to read data from the area specified by the physical address 10000 000.
- the conversion from the logical address to the physical address is preferably performed by a predetermined algorithm. For example, a logical address is converted into a physical address using an address conversion table stored in advance.
- the address control unit 12 Upon receiving the instruction, the address control unit 12 reads the data value “445566778899” from the area specified by the physical address 10000 000. When the data value “445555678899” is read, the data line control unit 10 outputs the read data value “445556678899” to the host computer 100 via the interface 14.
- the data line control unit 10 When the data line control unit 10 detects a write request to the flash memory 7 via the interface 14, the data line control unit 10 receives a write request for the data value “445566778899” from the interface 14 to the flash memory 7. Is output.
- the data processing control unit 11 receives an input from the data line control unit 10 and executes processing when using the flash memory 7 as a recording medium. That is, the data processing control unit 11 instructs the address control unit 12 to write the data value “4455667788899” in the empty area in the flash memory 7.
- the address control unit 12 Upon receiving the instruction, for example, when the area specified by the physical address 10000000 is an empty area, the address control unit 12 records the data value “4455667778899” at the physical address 100000. The operation when there is no free space in the flash memory 7 will be described in detail below.
- the host computer 100 may request data writing to the BD 8 via the interface 13.
- the case where the host computer 100 requests to write the data value “66” to the physical address 1234 of the BD 8 will be described as an example.
- the data line control unit 10 When the data line control unit 10 detects a write request to the BD 8 via the interface 13, the data line control unit 10 sends a data value “66” to the data processing control unit 10 for the area specified by the physical address 1234 of the BD 8 from the interface 13. ”Is received.
- the data processing control unit 11 receives an input from the data line control unit 10 and executes processing when using the flash memory 7 as a cache memory. That is, the data processing control unit 11 instructs the address control unit 12 to determine whether or not data in the area specified by the physical address 1234 of the BD 8 is recorded in the flash memory 7.
- the address control unit 12 Upon receiving the instruction, the address control unit 12 searches the data recorded in the flash memory 7 for cache data having “1234” as a tag. When cache data having “1234” as a tag is hit, the value of the data field of the hit cache data is rewritten to “66” (overwritten). In this manner, the cache data in which the data value of the data field is rewritten in the cache memory is hereinafter referred to as “write cache”.
- the data processing control unit 11 records the data value recorded in the area specified by the physical address 1234 with respect to the disk control unit 4. Is rewritten to the data value “66”. The disk control unit 4 rewrites the data in the area specified by the physical address 1234 of the BD8.
- the hybrid BD drive 1 may automatically record the data recorded in the stored BD 8 in the flash memory 7 as cache data when the BD 8 is stored.
- the operation for automatically recording data recorded on the BD 8 in the cache memory will be described below with reference to FIG.
- FIG. 6 is a flowchart showing an operation of automatically recording data recorded in the BD 8 as cache data in the flash memory 7.
- step S20 when the disk control unit 4 detects that the BD 8 is stored (step S20), a function for automatically recording the stored BD data in the flash memory 7 (hereinafter referred to as an automatic cache function) is turned on. Is recognized (step S21). If the automatic cache function is ON (Yes in step S21), the disk control unit 4 drives the optical pickup 5 and sequentially reads the data recorded on the BD 8 (step S22).
- the data read from the BD 8 is sent to the flash control unit 2 in association with the address that specifies the area where the data was recorded.
- the data line control unit 10 of the flash control unit 2 outputs to the data processing control unit 11 that it has received a request to write data read from the BD 8 as cache data to the flash memory 7.
- the data processing control unit 11 instructs the address control unit 12 to record the read data value and the address designating the area of the read data value in association with each other.
- the address control unit 12 records the data read from the BD 8 in association with the address where the data is recorded in the flash memory 7 (step S23).
- Step S23 is continued until there is no data to be read, that is, until all data recorded in the BD 8 is recorded in the flash memory 7 as cache data.
- the detection of whether or not the BD 8 is stored in the disk control means 4 can be detected by a conventionally known method.
- the hybrid BD drive 1 is a slot-in type disk drive device
- FIG. 7 is a flowchart showing the operation of the hybrid BD drive 1 when the BD 8 is taken out.
- the hybrid BD drive 1 determines whether identification information is added to the stored BD 8 (step S31).
- the disk control unit 4 drives the optical pickup 5 and acquires identification information from the BD 8 (step S32).
- the acquired identification information is temporarily stored in the flash control unit 2.
- the flash control unit 2 creates the identification information of the stored BD 8 (step S33).
- the created identification information is temporarily stored in the flash control unit 2 and sent to the disk control unit 4.
- the disk controller 4 drives the optical pickup 5 and writes identification information to the BD 8 (step S34).
- the data processing control unit 11 reads the write cache from the cache data recorded in the flash memory 7 and Instructs the WRITE 8 to write the read Write cache.
- the disk control unit 4 drives the optical pickup 5 and records the read data value of the write cache (step S35).
- the hybrid BD drive 1 releases the disk tray in which the BD 8 is stored (step S36).
- the hybrid BD drive 1 is a slot-in type drive, the BD 8 is discharged.
- the OS termination process is executed.
- the disk control unit 4 receives an instruction from the data processing control unit 11 to write the data “123466” to the BD 8. Upon receiving the instruction, the disk control unit 4 records the data value “66” in the area specified by the physical address 1234 of the BD 8 corresponding to the tag “1234”. Since the data value “55” was originally recorded at the physical address 1234 of the BD 8, it can be said that the data value “66” is overwritten on the data value “55”.
- the data updated on the cache data is written back to the BD 8 when the BD 8 is taken out. That is, when the BD 8 is next stored in the hybrid BD drive 1, the data value “66” recorded in the area specified by the physical address 1234 is recorded in the flash memory 7 as cache data. Become.
- identification information acquired from BD8 a serial number unique to BD8 can be cited.
- the identification information created for adding to the BD 8 is also preferably unique information for each optical disc.
- a time for starting creation of the identification information can be cited. For example, if the creation start time of the identification information is 14:08 on February 27, 2008, the identification information is “20080271408”.
- FIG. 8 is a flowchart showing the operation of the hybrid BD drive 1 when the BD 8 is stored in the hybrid BD drive 1.
- step S20 When recognizing that the BD 8 is stored (Yes in step S20), the hybrid BD drive 1 determines whether or not the stored BD 8 is the same BD as the BD that was stored most recently (step S20a). .
- step S20a not described in the description of the automatic cache function (FIG. 6) will be described in detail.
- the hybrid BD drive 1 determines whether or not identification information is added to the stored BD 8 (step S40).
- the disk control device 4 drives the optical pickup 5 and acquires identification information from the BD 8 (step S41).
- the acquired identification information is sent to the flash control unit 2.
- the flash control unit 2 determines whether or not the identification information stored in the flash control unit 2 matches the identification information acquired from the BD 8 (step S42).
- the hybrid BD drive 1 is a BD in which the BD and the BD 8 that are stored most recently are different. Recognize.
- the flash control unit 2 initializes the cache data recorded in the flash memory 7 (step S43).
- the disk control unit 4 recognizes whether or not the automatic cache function is ON (step S21).
- step S21 If the automatic cache function is ON (Yes in step S21), the disk control unit 4 The optical pickup 5 is driven, and the data value of the BD 8 is read sequentially (step S22). Then, the flash control unit 2 records the read data of the BD 8 as cache data in the flash memory 7 (step S23).
- the hybrid BD drive 1 has the same stored BD and BD 8 as the same. Recognized as a BD. That is, since the cache data recorded in the flash memory 7 can be used as it is, the flash control unit 2 does not initialize the cache data.
- FIG. 9 is a flowchart showing an operation of changing the size of the cache data recording area and the data recording area.
- FIGS. 10A to 10C are schematic diagrams schematically showing changes in the recording area of the flash memory 7.
- FIG. 10A shows generation of a cache data recording area
- FIG. The generation of the data recording area is shown
- (c) shows the change from the cache data recording area to the data recording area.
- the hybrid BD drive 1 records the data recorded on the BD 8 in the cache data recording area of the flash memory 7 as cache data (step S50).
- cache data is recorded in the flash memory 7 in order from the smallest physical address of the flash memory 7. Since the detailed operation in step S50 has been described above with reference to FIG. 3, the description thereof is omitted here.
- the data line control unit 10 detects a data write request from the host computer 100 to the data recording area of the flash memory 7 (step S51).
- the data processing control unit 11 executes processing when using the flash memory 7 as a recording medium.
- the data processing control unit 11 determines whether or not there is an area in which data including cache data is not recorded, that is, an empty area in the flash memory 7 (step S52). If there is an empty area in the flash memory 7 (Yes in step S52), the data processing control unit 11 writes the data received from the host computer 100 in the flash memory 7 (step S56). At this time, in the flash memory 7, data is recorded in an empty area of the flash memory 7 as shown in FIG.
- the detailed operation in step S56 has been described above with reference to FIG.
- step S52 the data processing control unit 11 deletes the cache data recorded in the flash memory 7 (step S53). That is, the data processing control unit 11 caches out the cache data in order to secure an area for writing the data requested to be written.
- step S54 the data processing control unit 11 writes the write cache back to the BD 8 (step S55). Since the detailed operation in step S55 has been described above with reference to FIG. 7, the description thereof is omitted here.
- the data processing device 11 When a free area is generated due to the cache-out of the cache data, the data processing device 11 writes the data requested by the host computer 100 in the free area secured by the cache-out (step S56).
- the area of the cache data recording area decreases, and the area of the data recording area increases accordingly. That is, the cache data recording area decreases from the portion indicated by the broken line in FIG. 10C to the portion indicated by the solid line in FIG.
- the data recording area increases from a portion indicated by a broken line in FIG. 10C to a portion indicated by a solid line in FIG. That is, the portion between the broken line and the solid line in FIG. 10C is an area changed from the cache data recording area to the data recording area.
- step S54 If the cache data to be cached is not a write cache (No in step S54), the data processing apparatus 11 writes the data requested by the host computer 100 without executing step S55 (step S55). Step S56).
- the flash memory 7 currently has no free space, and the cache data recording area is up to the physical address of 0000000 000. Data “123366” is recorded at physical address 0000000 000.
- the data processing control unit 11 deletes the data “123366” recorded in the area specified by the physical address 0000000 000, which is the end address of the cache data recording area To do.
- the data processing control unit 11 writes the data value “998855” requested to be written in the secured free area.
- the cache data is changed from the cache data recording area to the data recording area by caching the cache data.
- the cache data recorded in the cache memory is OS data
- the host computer 100 recognizes that the storage capacity of the flash memory 7 is 9 GB. That is, the host computer 100 cannot recognize 1 GB corresponding to the capacity of the cache memory from the beginning.
- the cache data is deleted from the area recorded in the area specified by the end address where the cache data is recorded.
- the cache data to be deleted may be determined randomly, or may be determined based on a predetermined algorithm.
- the capacity of the cache data to be deleted may be only the minimum capacity that can write the data requested to be written, or the data requested to be written can be written by deleting a predetermined capacity. You may make it ensure a capacity
- the hybrid BD drive 1 can be used as a cache memory that records cache data according to a detected address, and can also be used as a data memory that records data other than cache data. 7 is provided.
- the flash memory 7 is used as a cache memory, since the data recorded in the BD 8 is read from the flash memory 7, the access time for reading desired data can be shortened. Further, since the flash memory 7 can also be used as a data memory, a recording area where no cache data is recorded can be used effectively.
- the hybrid BD drive 1 can shorten the access time at the time of random access, and can effectively use the recording area that is redundant in the flash memory 7.
- the size of the recording area used as the cache memory in the flash memory 7 is appropriately changed according to the size of the recording area used as the data memory.
- the flash memory 7 can distribute an area that can be used as a cache memory and an area that can be used as a data memory without wasting a recording area at all in accordance with the use state of the user.
- the hybrid BD drive 1 can automatically record the data recorded on the stored optical BD 8 as cache data. Accordingly, the hybrid BD drive 1 can record the data recorded on the BD 8 as cache data without forcing the user to perform troublesome work.
- the data to be recorded on the BD 8 is overwritten on the cache data recorded on the flash memory 7.
- the cache data recorded in the flash memory 7 can always be the latest data.
- the overwritten cache data is written back to the BD 8 when the BD 8 is taken out, the data update can be reflected on the BD 8 as well.
- the data recorded in the BD 8 can be made the latest data reflecting the data update.
- the hybrid BD drive 1 can determine whether or not the stored BD is the same as the most recently stored BD based on the identification information acquired from the BD. As a result, when the same BD is continuously stored, the operation of recording the data recorded on the BD as cache data can be omitted. Therefore, for example, when the data recorded on the BD is an OS, the time required to start the OS can be shortened.
- the hybrid BD drive 1 can add the identification information created in the hybrid BD drive 1 to the BD 8. Thereby, even in the case of the BD 8 to which identification information is not added in advance, identification information can be added. That is, even in the case of a BD to which identification information is not added in advance, it can be determined whether the stored BD is the same as the most recently stored BD.
- FIG. 11 is a flowchart showing the data line recognition operation in the hybrid BD drive 1.
- SW0 a switch that operates the flash memory 7 only as a cache memory
- SW1 a switch that operates the flash memory 7 only as a data memory
- SW1 the flash memory 7 is connected to the cache memory and The switch operated as the data memory is “SW0 + 1”.
- SW0 is a switch that sends an instruction to the data line control unit 10 to recognize only the data line (hereinafter referred to as BD data line) via the interface 13
- SW1 is the data line control.
- the switch 10 sends an instruction for recognizing only a data line (hereinafter referred to as a memory data line) via the interface 14 to the unit 10, and “SW0 + 1” is a BD data line and a memory This switch sends an instruction to recognize both data lines.
- the hybrid BD drive 1 When the host computer 100 is turned off, the hybrid BD drive 1 is also turned on. When the hybrid BD drive 1 is powered on, the flash control unit 2 executes its own initialization (step S60). At this time, the disk control unit 4 also performs its own initialization.
- the data line control unit 10 determines whether or not the switch in the switch control unit 6 is SW0 + 1 (step S61). When the switch in the switch control unit 6 is SW0 + 1 (Yes in step S61), the flash control unit 2 executes the rearrangement of the flash memory 7 (step S62). Subsequently, the data line control unit 10 recognizes the BD data line (step S63) and recognizes the memory data line (step S64). At this time, since the data line control unit 10 can detect data input via the interfaces 13 and 14, the flash memory 7 can be used as either a cache memory or a data memory.
- the data line control unit 10 determines whether or not the switch in the switch control unit 6 is SW0 (step S65). If the switch in switch controller 6 is SW0 (Yes in step S65), data line controller 10 recognizes only the BD data line. At this time, since the data line control unit 10 can detect only data input via the interface 13, the flash memory 7 can be used only as a cache memory.
- step S65 If the switch in the switch control unit 6 is not SW0 (No in step S65), the switch in the switch control unit 6 is SW1, so the data line control unit 10 recognizes only the memory data line (step S67). At this time, since the data line control unit 10 can detect only data input via the interface 14, the flash memory 7 can be used only as a data memory.
- FIG. 11 the flow is described in the order in which the memory line is created after the data line control unit 10 creates the BD data line. However, the flow is not limited to this, but after creating the memory data line.
- a BD data line may be created.
- the switch in the switch control unit 6 is switched while the host computer 100 is activated, the data line recognized by the data line control unit 10 is changed by executing the processing after step S61.
- each block included in the flash control unit 2 of the hybrid BD drive 1 may be configured by hardware logic. Alternatively, it may be realized by software using a CPU (Central Processing Unit) such as an MPU as follows.
- a CPU Central Processing Unit
- the flash control unit 2 includes a CPU such as an MPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, and a RAM (Random Access that expands the program into an executable format. Memory) and a storage device (recording medium) such as a memory for storing the program and various data.
- a CPU such as an MPU that executes instructions of a program that realizes each function
- ROM Read Only Memory
- RAM Random Access that expands the program into an executable format.
- Memory and a storage device (recording medium) such as a memory for storing the program and various data.
- the object of the present invention is not limited to the case where the program is fixedly held in the program memory of the flash control unit 2, but the program code of the program (executable program, intermediate code program, or source program) This can also be achieved by supplying a recording medium on which is recorded to the hybrid BD drive 1, and the hybrid BD drive 1 reads and executes the program code recorded on the recording medium.
- the recording medium is not limited to a specific structure or type. That is, the recording medium includes, for example, a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. System, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM.
- a tape system such as a magnetic tape and a cassette tape
- a magnetic disk such as a floppy (registered trademark) disk / hard disk
- an optical disk such as a CD-ROM / MO / MD / DVD / CD-R.
- a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM /
- the object of the present invention can be achieved even if the flash control unit 2 (or the hybrid BD drive 1) is configured to be connectable to a communication network.
- the program code is supplied to the flash control unit 2 via the communication network.
- the communication network is not limited to a specific type or form as long as it can supply program codes to the flash control unit 2.
- the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, etc. may be used.
- the transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type.
- wired lines such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), 802.11 wireless, HDR, mobile phone It can also be used by radio such as a telephone network, a satellite line, and a terrestrial digital network.
- the present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.
- the flash memory 7 has a data memory function, that is, when the switch in the switch control unit 6 is SW1 or SW0 + 1, the data recorded in the BD 8 is copied to the data recording area of the flash memory 7. May be.
- the OS data is recorded on the BD 8
- the OS data is recorded from the hybrid BD drive 1 by copying the OS data to the data recording area, reading it from the data recording area, and using it.
- the BD8 that is present can be taken out.
- the hybrid BD drive 1 can be used as a normal BD drive.
- copying the data recorded on the BD 8 to the data recording area of the flash memory 7 is a process in the hybrid BD drive 1 (device). Therefore, the security effect is high, and encryption processing and decryption of the data to be copied are performed. No processing is required. That is, data can be copied at high speed without imposing a load on an external device such as the host computer 100. In addition, since it is possible to omit processing for conforming to standards such as content protection, the number of device development processes can be reduced.
- the optical disk drive device can use the nonvolatile memory as a so-called cache memory that records cache data and also as a data memory that records data other than cache data. it can.
- the optical disk drive device can shorten the access time at the time of random access, and can effectively utilize the excess recording area in the non-volatile memory in which no cache data is recorded. Play.
- the optical disc drive apparatus can be applied to a disc drive apparatus using an optical disc in general. More specifically, a CD drive, a DVD drive, a BD drive, etc. can be mentioned.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Memory System Of A Hierarchy Structure (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
Description
不揮発性メモリを備えた光ディスクドライブ装置であって、
第1のインターフェースを介して第1のアドレスが入力されたとき、光ディスクの上記第1のアドレスにより指定されるセクタから読み出され、上記第1のアドレスに関連付けて上記不揮発性メモリに記録されているキャッシュデータを読み出すか、上記キャッシュデータを読み出せない場合には、上記セクタに記録されているデータを上記第1のアドレスに関連付けて上記不揮発性メモリに書き込むキャッシュ制御手段と、
第2のインターフェースを介して入力される第2のアドレスに基いて上記不揮発性メモリからデータを読み出すか、または上記第2のインターフェースを介して入力されるデータを、上記不揮発性メモリに書き込むデータ制御手段と、
を備えていることを特徴としている。
2 フラッシュ制御部
3 インターフェース制御部
4 ディスク制御部(ディスク検知手段、データ書き込み手段)
5 光ピックアップ
6 スイッチ制御部
7 フラッシュメモリ(不揮発性メモリ)
8 Blu-rayディスク(光ディスク)
10 データライン制御部
11 データ処理制御部(キャッシュ制御手段、データ制御手段)
12 アドレス制御部
13 インターフェース(第1のインターフェース)
14 インターフェース(第2のインターフェース)
100 ホストコンピュータ
(ハイブリッドBDドライブ1の構成)
本発明に係る光ディスクドライブ装置の一実施形態について、図1~10を参照して以下に説明する。図1は、ハイブリッドBDドライブ(光ディスクドライブ装置)1の要部構成を示すブロック図である。
インターフェース制御部3は、ホストコンピュータ100のインターフェースに接続される、ハイブリッドBDドライブ1のインターフェースを制御する。インターフェース制御部3は、図1に示すように、インターフェース(第1のインターフェース)13およびインターフェース(第2のインターフェース)14を有している。
フラッシュ制御部2は、インターフェース13および14を介して入力されたデータ(例えば、アドレス)に基いて、フラッシュメモリ7にデータを書き込むか、またはフラッシュメモリ7からデータを読み出す。また、フラッシュメモリ7に記録されたデータをBD8に書き込む。すなわち、フラッシュ制御部2は、入力されたデータがどのインターフェースを介して入力されたのかに応じて、その動作を適宜変更することができる。フラッシュ制御部2は、図1に示すように、データライン制御部10、データ処理制御部(キャッシュ制御手段、データ制御手段)11およびアドレス制御部12を備えている。
ディスク制御部4は、BD8からのデータの読み出し制御、BD8へのデータの書き込み制御、およびBD8の収納検知など、BD8に対する処理を制御する。具体的には、ディスク制御部4は、インターフェース13を介して入力されたデータ、またフラッシュ制御部2を介して入力されたデータに基いて、BD8に対するデータの書き込みを制御する。また、ディスク制御部4は、BD8から読み出したデータをインターフェース13を介してホストコンピュータに出力すると共に、フラッシュ制御部2に対して出力する。
光ピックアップ5は、ディスク制御部4からの指示に基いて駆動される。光ピックアップ5は、BD8から記録されているデータを読み出したり、BD8に対してデータを書き込んだりするための光源および受光部を備えている。
スイッチ制御部6は、インターフェース13および14を介してホストコンピュータ100に接続されているデータラインを設定するスイッチを制御する。スイッチ制御部6におけるスイッチは、インターフェース14とフラッシュ制御部2とを結ぶデータラインおよびインターフェース13とフラッシュ制御部2とを結ぶデータラインのうち、いずれを動作させるのか、または双方を動作させるのかを設定する。スイッチ制御部6から指示に基いて、データライン制御部10はインターフェース制御部3における各インターフェースとのデータラインを確立する。
フラッシュメモリ7は、電源を切っても記憶した内容の消えない不揮発性のメモリである。フラッシュメモリ7は、BD8に記録されているデータをキャッシュデータとして一時的に記録するキャッシュメモリとして機能すると共に、キャッシュデータ以外のデータを記録するデータメモリとしても機能する。すなわち、フラッシュメモリ7において、キャッシュデータの記録されていない領域には、キャッシュデータ以外のデータを記録することができる。なお、ホストPC100は、このデータメモリをハードディスクドライブとして認識するように構成されていてもよいし、その他の記憶装置として認識するように構成されていてもよい。
次に、ハイブリッドBDドライブ1の動作について、図3および4を参照して以下に説明する。ハイブリッドBDドライブ1の動作は、大別して、システム起動動作およびデータ処理動作の2つの動作に分けることができる。それぞれの動作について以下に説明する。
まず、ハイブリッドBDドライブ1におけるシステム起動動作について、図3を参照しつつ以下に説明する。なお、本明細書等における「システム起動動作」とは、フラッシュメモリ7をキャッシュメモリとして使用する場合のハイブリッドBDドライブ1の動作を指す。図3は、ハイブリッドBDドライブ1におけるシステム起動動作を示すフローチャートである。
次に、ハイブリッドBDドライブ1におけるデータ処理動作について、図4を参照しつつ以下に説明する。なお、本明細書等における「データ処理動作」とは、フラッシュメモリ7をキャッシュデータ以外のデータを記録するデータメモリとして用いる場合のハイブリッドBDドライブ1の動作を指す。図4は、ハイブリッドBDドライブ1におけるデータ処理動作を示すフローチャートである。
ここで、システム起動動作について、具体例を挙げてより詳細に説明する。ここでは、ハイブリッドBDドライブ1が、インターフェース13を介して、ホストコンピュータ100からBD8の物理アドレス1234番地により指定される領域から1バイトのデータ値「55」を読み出すように要求された場合を例に挙げて説明する。
続いて、データ処理動作の詳細について以下に説明する。ここでは、インターフェース14を介して、ホストコンピュータ100からフラッシュメモリ7の論理アドレス00 000 000番地により指定される領域からデータ値「445566778899」を読み出すように要求があった場合について説明する。
続いて、ホストコンピュータ100からインターフェース13を介して、BD8のデータを書き換える要求を受けた場合のハイブリッドBDドライブ1の動作について、以下に説明する。
ハイブリッドBDドライブ1は、BD8の収納時に、収納されたBD8に記録されているデータをキャッシュデータとしてフラッシュメモリ7に自動的に記録するようにしてもよい。BD8に記録されているデータを自動的にキャッシュメモリに記録する場合の動作について、図6を参照しつつ以下に説明する。図6は、BD8に記録されているデータをキャッシュデータとしてフラッシュメモリ7に自動的に記録する動作を示すフローチャートである。
BD8をハイブリッドBDドライブ1から取り出す場合におけるキャッシュデータの処理について、図7を参照しつつ以下に説明する。図7は、BD8を取り出す際のハイブリッドBDドライブ1の動作を示すフローチャートである。
上述した動作によりでBD8を取り出した後、再度BDを挿入した場合におけるハイブリッドBDドライブ1の動作について、図8を参照しつつ以下に説明する。なお、ここで説明するハイブリッドBDドライブ1の動作は、図6を参照して説明した自動キャッシュ機能の動作と類似している。したがって、自動キャッシュ機能を説明する際に説明したステップについては、同一の番号を付し、その詳細な説明については省略する。図8は、BD8をハイブリッドBDドライブ1に収納した場合における、ハイブリッドBDドライブ1の動作を示すフローチャートである。
先に述べたように、フラッシュメモリ7におけるキャッシュデータ記録領域およびデータ記録領域の大きさは、適宜変更される。ここでは、キャッシュデータ記録領域およびデータ記録領域の大きさを変更する動作について、図9および図10の(a)~(c)を参照しつつ以下に説明する。図9は、キャッシュデータ記録領域およびデータ記録領域の大きさを変更する動作を示すフローチャートである。図10の(a)~(c)は、フラッシュメモリ7の記録領域の変化を模式的に示す模式図でであり、(a)はキャッシュデータ記録領域の生成を示しており、(b)はデータ記録領域の生成を示しており、(c)はキャッシュデータ記録領域からデータ記録領域への変更を示している。
以上説明したように、ハイブリッドBDドライブ1は、検知したアドレスに応じて、キャッシュデータを記録するキャッシュメモリとして用いることができると共に、キャッシュデータ以外のデータを記録するデータメモリとして用いることができるフラッシュメモリ7を備えている。フラッシュメモリ7をキャッシュメモリとして用いる場合、BD8に記録されたデータに対する読み出しは、フラッシュメモリ7から読み出されるため、所望のデータを読み出す際のアクセス時間を短縮することができる。また、フラッシュメモリ7は、データメモリとしても用いることができるため、キャッシュデータの記録されていない記録領域を有効に活用することができる。
次に、インターフェース13および14から伸びるデータラインの認識動作について、図11を参照しつつ以下に説明する。図11は、ハイブリッドBDドライブ1におけるデータラインの認識動作を示すフローチャートである。
最後に、ハイブリッドBDドライブ1のフラッシュ制御部2に含まれている各ブロックは、ハードウェアロジックによって構成すればよい。または、次のように、MPUなどのCPU(Central Processing Unit)を用いてソフトウェアによって実現してもよい。
フラッシュメモリ7がデータメモリの機能を有している場合、すなわち、スイッチ制御部6におけるスイッチがSW1またはSW0+1である場合には、BD8に記録されているデータをフラッシュメモリ7のデータ記録領域にコピーしてもよい。例えば、BD8にOSのデータが記録されているような場合には、OSのデータをデータ記録領域にコピーし、そこから読み出して使用することによって、ハイブリッドBDドライブ1からOSのデータの記録されているBD8を取り出すことができる。これによって、ハイブリッドBDドライブ1を通常のBDドライブとして使用することができる。
Claims (9)
- 不揮発性メモリを備えた光ディスクドライブ装置であって、
第1のインターフェースを介して第1のアドレスが入力されたとき、光ディスクの上記第1のアドレスにより指定されるセクタから読み出され、上記第1のアドレスに関連付けて上記不揮発性メモリに記録されているキャッシュデータを読み出すか、上記キャッシュデータを読み出せない場合には、上記セクタに記録されているデータを上記第1のアドレスに関連付けて上記不揮発性メモリに書き込むキャッシュ制御手段と、
第2のインターフェースを介して入力される第2のアドレスに基いて上記不揮発性メモリからデータを読み出すか、または上記第2のインターフェースを介して入力されるデータを、上記不揮発性メモリに書き込むデータ制御手段と、
を備えていることを特徴とする光ディスクドライブ装置。 - 上記データ制御手段は、上記キャッシュデータを削除することにより、上記第2のインターフェースを介して入力されるデータを書き込む領域を確保することを特徴とする請求の範囲第1項に記載の光ディスクドライブ装置。
- 光ディスクの収納を検知するディスク検知手段をさらに備えており、
上記ディスク検知手段により光ディスクの収納が検知されると、上記キャッシュ制御手段は、上記光ディスクに記録されているデータを、当該データが記録されているセクタを指定するアドレスに関連付けて上記不揮発性メモリに書き込むことを特徴とする請求の範囲第1項または第2項に記載の光ディスクドライブ装置。 - 上記キャッシュ制御手段は、上記第1のアドレスと共に上記第1のインターフェースを介して入力されるデータにより、上記第1のアドレスに関連付けられている上記キャッシュデータを上書きすることを特徴とする請求の範囲第1項から第3項のいずれか1項に記載の光ディスクドライブ装置。
- 上記キャッシュ制御手段は、上書きした上記キャッシュデータを、上記第1のアドレスにより指定されるセクタに書き戻すことを特徴とする請求の範囲第4項に記載の光ディスクドライブ装置。
- 上記光ディスクを他の光ディスクと識別するために上記光ディスクに記録されている識別情報を取得する識別情報取得手段をさらに備えており、
上記キャッシュ制御手段は、上記キャッシュデータとして上記不揮発性メモリに記録されているデータを記録している光ディスクの識別情報と、上記識別情報取得手段により取得された識別情報とが一致しない場合に、上記キャッシュデータを初期化することを特徴とする請求の範囲第1項から第5項のいずれか1項に記載の光ディスクドライブ装置。 - 上記光ディスクを他の光ディスクと識別するための識別情報を作成する識別情報作成手段と、上記識別情報作成手段において作成された識別情報を光ディスクに書き込むデータ書き込み手段と、をさらに備えていることを特徴とする請求の範囲第6項に記載の光ディスクドライブ装置。
- 請求の範囲第1項から第7項のいずれか1項に記載の光ディスクドライブ装置を動作させるためのプログラムであって、コンピュータを上記の各手段として駆動させることを特徴とするプログラム。
- 請求の範囲第8項に記載のプログラムを記録したコンピュータ読み取り可能な記録媒体。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2010009283A MX2010009283A (es) | 2008-03-11 | 2009-03-10 | Dispositivo de unidad de disco optico. |
EP09720630A EP2251867A4 (en) | 2008-03-11 | 2009-03-10 | OPTICAL DISC DRIVE DEVICE |
US12/864,081 US8305853B2 (en) | 2008-03-11 | 2009-03-10 | Optical disc drive device |
JP2010502841A JP4955099B2 (ja) | 2008-03-11 | 2009-03-10 | 光ディスクドライブ装置 |
BRPI0907870-3A BRPI0907870A2 (pt) | 2008-03-11 | 2009-03-10 | Dispositivo de unidade de disco óptico |
CN200980103186.0A CN102132345B (zh) | 2008-03-11 | 2009-03-10 | 光盘驱动装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008061612 | 2008-03-11 | ||
JP2008-061612 | 2008-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009113553A1 true WO2009113553A1 (ja) | 2009-09-17 |
Family
ID=41065221
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/054581 WO2009113553A1 (ja) | 2008-03-11 | 2009-03-10 | 光ディスクドライブ装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US8305853B2 (ja) |
EP (1) | EP2251867A4 (ja) |
JP (1) | JP4955099B2 (ja) |
CN (1) | CN102132345B (ja) |
BR (1) | BRPI0907870A2 (ja) |
MX (1) | MX2010009283A (ja) |
MY (1) | MY151374A (ja) |
RU (1) | RU2440629C1 (ja) |
WO (1) | WO2009113553A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012089209A (ja) * | 2010-10-20 | 2012-05-10 | Sharp Corp | 記録再生装置、再生キャッシュ処理方法、プログラム、および記録媒体 |
JP2012169007A (ja) * | 2011-02-14 | 2012-09-06 | Sharp Corp | 拡張メモリ付きハイブリッドドライブ、及び拡張メモリ付きハイブリッドドライブを備えた記録再生装置 |
JP2014071893A (ja) * | 2012-09-27 | 2014-04-21 | Hitachi Ltd | 階層メモリ管理 |
JP2015517697A (ja) * | 2012-05-23 | 2015-06-22 | 株式会社日立製作所 | 二次記憶装置に基づく記憶領域をキャッシュ領域として用いるストレージシステム及び記憶制御方法 |
WO2016135887A1 (ja) * | 2015-02-25 | 2016-09-01 | 三菱電機株式会社 | ディスク装置 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090288076A1 (en) * | 2008-05-16 | 2009-11-19 | Mark Rogers Johnson | Managing Updates In A Virtual File System |
KR101350981B1 (ko) * | 2008-12-04 | 2014-01-14 | 도시바삼성스토리지테크놀러지코리아 주식회사 | 복합 광 디스크 드라이브 및 그 구동 방법 및 이를 적용하는 전자 시스템 |
US20110252435A1 (en) * | 2009-07-13 | 2011-10-13 | Juhnho Park | Disk drive |
JP5894044B2 (ja) * | 2012-09-14 | 2016-03-23 | レノボ・シンガポール・プライベート・リミテッド | ハイブリッド・ディスク・ドライブにデータを記憶する方法および携帯式コンピュータ |
US9785365B1 (en) * | 2015-12-08 | 2017-10-10 | Rambus Inc. | Persistent memory descriptor |
US11061595B2 (en) * | 2019-05-10 | 2021-07-13 | Seagate Technology Llc | Logical address remapping for direct write |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06314177A (ja) | 1993-04-28 | 1994-11-08 | Toshiba Corp | 磁気ディスク装置及びアクセス方法 |
JP2007034536A (ja) * | 2005-07-25 | 2007-02-08 | Sony Corp | データ記憶装置及び方法、並びに記録再生システム |
JP2007052914A (ja) * | 2006-09-06 | 2007-03-01 | Fujitsu Ltd | ディスクドライブ装置、および記録ディスクのローディング制御方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06338139A (ja) * | 1993-05-31 | 1994-12-06 | Olympus Optical Co Ltd | 追記型情報記録媒体の情報記録における交代処理方法 |
US5584007A (en) * | 1994-02-09 | 1996-12-10 | Ballard Synergy Corporation | Apparatus and method for discriminating among data to be stored in cache |
JPH0877073A (ja) | 1994-08-31 | 1996-03-22 | Toshiba Corp | 集合光ディスク装置 |
WO2002009108A1 (fr) * | 2000-07-21 | 2002-01-31 | Fujitsu Limited | Lecteur de disque, procede de commande de chargement pour disque vierge |
RU2298845C2 (ru) | 2002-10-17 | 2007-05-10 | Самсунг Электроникс Ко., Лтд. | Носитель для хранения данных, имеющий информацию для управления буферизованным состоянием документа разметки, а также способ и устройство для воспроизведения данных с носителя для хранения данных |
JP2006503401A (ja) | 2002-10-17 | 2006-01-26 | サムスン エレクトロニクス カンパニー リミテッド | マークアップ文書のバッファリング状態を制御するための制御情報が記録された情報保存媒体、その再生装置及び再生方法 |
US20040148627A1 (en) | 2002-10-17 | 2004-07-29 | Samsung Electronics Co., Ltd. | Data storage medium having information for controlling buffered state of markup document, and method and apparatus for reproducing data from the data storage medium |
JP4258332B2 (ja) | 2003-09-30 | 2009-04-30 | ティアック株式会社 | 光ディスク装置 |
-
2009
- 2009-03-10 MY MYPI20104160 patent/MY151374A/en unknown
- 2009-03-10 MX MX2010009283A patent/MX2010009283A/es active IP Right Grant
- 2009-03-10 BR BRPI0907870-3A patent/BRPI0907870A2/pt not_active IP Right Cessation
- 2009-03-10 WO PCT/JP2009/054581 patent/WO2009113553A1/ja active Application Filing
- 2009-03-10 RU RU2010136310/28A patent/RU2440629C1/ru not_active IP Right Cessation
- 2009-03-10 CN CN200980103186.0A patent/CN102132345B/zh not_active Expired - Fee Related
- 2009-03-10 JP JP2010502841A patent/JP4955099B2/ja not_active Expired - Fee Related
- 2009-03-10 US US12/864,081 patent/US8305853B2/en not_active Expired - Fee Related
- 2009-03-10 EP EP09720630A patent/EP2251867A4/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06314177A (ja) | 1993-04-28 | 1994-11-08 | Toshiba Corp | 磁気ディスク装置及びアクセス方法 |
JP2007034536A (ja) * | 2005-07-25 | 2007-02-08 | Sony Corp | データ記憶装置及び方法、並びに記録再生システム |
JP2007052914A (ja) * | 2006-09-06 | 2007-03-01 | Fujitsu Ltd | ディスクドライブ装置、および記録ディスクのローディング制御方法 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012089209A (ja) * | 2010-10-20 | 2012-05-10 | Sharp Corp | 記録再生装置、再生キャッシュ処理方法、プログラム、および記録媒体 |
JP2012169007A (ja) * | 2011-02-14 | 2012-09-06 | Sharp Corp | 拡張メモリ付きハイブリッドドライブ、及び拡張メモリ付きハイブリッドドライブを備えた記録再生装置 |
JP2015517697A (ja) * | 2012-05-23 | 2015-06-22 | 株式会社日立製作所 | 二次記憶装置に基づく記憶領域をキャッシュ領域として用いるストレージシステム及び記憶制御方法 |
JP2014071893A (ja) * | 2012-09-27 | 2014-04-21 | Hitachi Ltd | 階層メモリ管理 |
US9760497B2 (en) | 2012-09-27 | 2017-09-12 | Hitachi, Ltd. | Hierarchy memory management |
WO2016135887A1 (ja) * | 2015-02-25 | 2016-09-01 | 三菱電機株式会社 | ディスク装置 |
JPWO2016135887A1 (ja) * | 2015-02-25 | 2017-04-27 | 三菱電機株式会社 | ディスク装置 |
Also Published As
Publication number | Publication date |
---|---|
US20100329092A1 (en) | 2010-12-30 |
MY151374A (en) | 2014-05-30 |
RU2440629C1 (ru) | 2012-01-20 |
MX2010009283A (es) | 2010-09-24 |
US8305853B2 (en) | 2012-11-06 |
JPWO2009113553A1 (ja) | 2011-07-21 |
CN102132345B (zh) | 2014-01-22 |
EP2251867A1 (en) | 2010-11-17 |
BRPI0907870A2 (pt) | 2015-07-21 |
JP4955099B2 (ja) | 2012-06-20 |
CN102132345A (zh) | 2011-07-20 |
EP2251867A4 (en) | 2012-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4955099B2 (ja) | 光ディスクドライブ装置 | |
US6772281B2 (en) | Disk drive for selectively satisfying a read request from a host computer for a first valid data block with a second valid data block | |
US8627020B2 (en) | Security erase of a delete file and of sectors not currently assigned to a file | |
US7472219B2 (en) | Data-storage apparatus, data-storage method and recording/reproducing system | |
JP4422652B2 (ja) | 漸進的マージ方法及びそれを利用したメモリシステム | |
KR20080098511A (ko) | 두 가지 형태의 저장매체를 이용한 데이터 저장장치 | |
JP2010020753A (ja) | 初期ブート画像のインストール方法、初期ブート画像の更新方法、及び記憶装置 | |
JP2009199625A (ja) | メモリカードおよびメモリカードの制御方法および不揮発性半導体メモリの制御方法 | |
US8433847B2 (en) | Memory drive that can be operated like optical disk drive and method for virtualizing memory drive as optical disk drive | |
JP2009146539A (ja) | 情報記録装置および情報記録方法 | |
JP2009059444A (ja) | 情報処理装置および情報処理方法 | |
KR20100030990A (ko) | 특정 조건을 갖는 파일을 정해진 위치에 저장할 수 있는 하이브리드 하드디스크 드라이브, 이에 적합한 제어 방법 및 이에 적합한 기록 매체 | |
JP5491201B2 (ja) | 半導体記録装置及び半導体記録システム | |
KR20030061948A (ko) | 정보 저장 장치 및 그를 이용한 파일 관리 방법 | |
JP2014142748A (ja) | 記憶装置およびその制御方法 | |
JP2003242027A (ja) | インタフェース装置、データ処理システム、及びデータ処理方法 | |
JP2010211880A (ja) | ディスクドライブ装置、その制御方法、プログラム、及び、記録媒体 | |
JP2000227866A (ja) | 情報記録再生装置 | |
JP2008117491A (ja) | 記録装置、記録方法、およびプログラム | |
JP2007293564A (ja) | メモリデバイスおよび情報記憶システム | |
JP2006119944A (ja) | データ記憶装置のデータ消去方法、データ消去プログラムおよび該データ消去プログラムが記憶された記憶媒体 | |
JP2904077B2 (ja) | 磁気ディスク装置 | |
JP2012119020A (ja) | 情報処理装置 | |
JP2007316736A (ja) | 記録制御装置及びその制御方法 | |
JP2005149620A (ja) | 記憶装置およびファイルシステム |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980103186.0 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09720630 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010502841 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12864081 Country of ref document: US Ref document number: 2009720630 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 4644/CHENP/2010 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2010/009283 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: PI 2010004160 Country of ref document: MY |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010136310 Country of ref document: RU |
|
ENP | Entry into the national phase |
Ref document number: PI0907870 Country of ref document: BR Kind code of ref document: A2 Effective date: 20100831 |