WO2008013230A1 - dispositif de stockage non volatil, système de stockage non volatil et dispositif d'hôte - Google Patents
dispositif de stockage non volatil, système de stockage non volatil et dispositif d'hôte Download PDFInfo
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- WO2008013230A1 WO2008013230A1 PCT/JP2007/064677 JP2007064677W WO2008013230A1 WO 2008013230 A1 WO2008013230 A1 WO 2008013230A1 JP 2007064677 W JP2007064677 W JP 2007064677W WO 2008013230 A1 WO2008013230 A1 WO 2008013230A1
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- Prior art keywords
- wireless
- power supply
- power
- wireless communication
- unit
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00281—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal
- H04N1/00315—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a telecommunication apparatus, e.g. a switched network of teleprinters for the distribution of text-based information, a selective call terminal with a radio transmission apparatus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2101/00—Still video cameras
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0034—Details of the connection, e.g. connector, interface
- H04N2201/0037—Topological details of the connection
- H04N2201/0039—Connection via a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0034—Details of the connection, e.g. connector, interface
- H04N2201/0048—Type of connection
- H04N2201/0055—By radio
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0087—Image storage device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0274—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by switching on or off the equipment or parts thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- Nonvolatile storage device nonvolatile storage system, and host device
- the present invention relates to a nonvolatile storage device and a nonvolatile storage system characterized by switching control for enabling or disabling a wireless communication function using a nonvolatile storage device or the like having a wireless communication function. And a host device.
- Patent Document 1 raises the problem that when the amount of data of FAT file system information is large, read / write performance of data other than FAT file system information decreases.
- Patent Document 1 includes a memory card controller for managing a file system structure based on FAT file system information inside the memory card. This can reduce the exchange of FAT file system information between the memory card and the host device.
- Patent Document 1 proposes a memory card that prevents a decrease in data read / write performance by such a method.
- Patent Document 2 shows an example in which a storage device having such a wireless communication function is used as a home server.
- the storage device in Patent Document 2 does not manage the file system structure as in Patent Document 1. Therefore, in the future, the number of memory cards that can be connected to the network and manage the file system structure will increase. It is thought.
- Patent Document 1 JP 2003-187203
- Patent Document 2 JP 2002-199121
- non-volatile storage device having a wireless communication function usable as a file server on a network is very useful for user convenience.
- non-volatile storage devices require a power source to operate the wireless communication function, so a non-volatile storage device such as a memory card that is often used in a specific host device is used as a file server.
- the attached host device When used, the attached host device also gets power.
- the wireless communication function consumes a relatively large amount of power, if the host device is not connected to a stable power supply and is driven by a rechargeable battery, there is a problem that the power supply burden on the host device increases. is there.
- the nonvolatile memory device of the present invention is a nonvolatile memory device that can read and write data from the outside, and includes a nonvolatile memory that stores data and an external memory Wired power supply from outside to perform data communication with the outside via wire, and read and write data to and from the non-volatile memory, and external power and wired power supply Data communication with the outside is performed wirelessly!
- the wireless communication unit that reads and writes data to and from the non-volatile memory, and the intermittent data communication function by the wireless communication unit from the outside
- a wireless controller having a wireless communication function control unit that switches according to the instruction.
- the wireless communication function control unit switches on / off of the power of the wireless communication unit according to an instruction from the outside, so as to switch on / off of the wireless data communication function in the wireless controller
- the wireless communication function control unit switches on / off of the power of the wireless communication unit according to an instruction from the outside, so as to switch on / off of the wireless data communication function in the wireless controller
- the wireless communication function control unit switches on and off the wireless data communication function in the wireless controller by connecting and disconnecting a power supply line of a power source supplied to the wireless controller from the outside.
- the switch may be realized by a sliding movable part provided in the nonvolatile memory device.
- the switch may be realized by an antenna unit for performing wireless communication.
- the nonvolatile memory device of the present invention is a nonvolatile memory device that can read and write data from the outside, and includes a nonvolatile memory that stores data and an external memory Wired power supply from outside to perform data communication with the outside via wire, and read and write data to and from the non-volatile memory, and external power and wired power supply Performs data communication with the outside wirelessly! / ⁇ Receives a wireless controller having a wireless communication unit that reads and writes data to and from the non-volatile memory, and a power supply supplied from outside by wire A plurality of independent power lines, and the plurality of power lines include power lines for supplying power to the wireless controller.
- the host device of the present invention can physically attach and detach a nonvolatile storage device having a wireless communication function, and can supply power to the nonvolatile storage device by wire when attached.
- a processor that transmits the data to the nonvolatile memory device.
- a host device of the present invention is a host device in which a non-volatile storage device including a wireless controller for performing wireless communication can be physically attached and detached, and from an external part.
- a user interface for inputting instructions, a power supply terminal for supplying power to the wireless controller, and a plurality of independent power supply terminals for supplying power to each part except for the wireless controller of the nonvolatile memory device
- a power supply unit for intermittently supplying a power supply terminal for supplying power to the wireless controller; and an instruction for switching the intermittent connection of the power supply terminal for supplying power to the wireless controller based on an instruction received from the user interface!
- a processor for transmitting to the power supply unit.
- the host device of the present invention can physically attach and detach a nonvolatile storage device having a wireless communication function, and can supply power to the nonvolatile storage device by wire when attached.
- a power supply detection unit that detects the presence / absence of external power supply, and whether the wireless communication function of the nonvolatile storage device is enabled / disabled according to the presence / absence of power supply detected by the power supply detection unit.
- a processor for transmitting an instruction to switch to the non-volatile storage device.
- the nonvolatile storage system of the present invention is a nonvolatile storage system that is physically detachable from the host device, performs data communication with the host device in a wired manner, and has a wireless communication function.
- a non-volatile storage system comprising: a device; and a wireless host device that performs wireless data communication with the non-volatile storage device, wherein the non-volatile storage device includes a non-volatile memory that stores data, and an external device
- a controller that reads data from and writes data to the non-volatile memory via a wired communication with a wired power supply, and a controller that reads and writes data to and from the nonvolatile memory.
- Wireless communication unit that performs wireless data communication and reads and writes data to and from the nonvolatile memory, and wireless data transmitted by the wireless communication unit Intermittent Shin function is for anda radio controller having a radio communication function control unit that switches an instruction from the outside.
- the host device includes a user interface for inputting an instruction from the outside, and an instruction for switching between enabling and disabling the wireless communication function of the nonvolatile storage device based on the instruction received from the user interface.
- a processor for transmitting to a non-volatile storage device, and the wireless communication function control unit switches on and off the power of the wireless communication unit according to an instruction from the outside, so that the wireless communication unit in the wireless controller
- a standby unit that switches between intermittent data communication functions may be used.
- the nonvolatile storage system of the present invention is physically detachable from a host device and the host device, performs data communication with the host device by wire, and has a wireless communication function.
- a non-volatile storage system comprising: a non-volatile storage device comprising: a non-volatile storage device comprising: a non-volatile storage system comprising: a non-volatile storage device comprising: And wired from the outside
- a controller that reads data from and writes data to the non-volatile memory via a wired connection with power supply, and a data communication with the outside via a wired power supply from the outside.
- a wireless controller having a wireless communication unit that performs wireless reading and writing of data to and from the nonvolatile memory, and for receiving power supplied from the outside, and supplying power to the wireless controller
- a plurality of independent power lines including a power line for performing the operation, and the host device is connected to a user interface for inputting an instruction from the outside and a plurality of independent power lines of the nonvolatile memory device.
- a processor that transmits an instruction to switch on / off of a power supply terminal to be supplied to the power supply unit.
- the wireless communication function control unit switches on and off the wireless data communication function in the wireless controller by connecting and disconnecting a power line of a power source supplied to the wireless controller from the outside.
- the switch may be realized by a sliding movable part provided in the nonvolatile memory device.
- the switch may be realized by an antenna unit for performing wireless communication.
- the host device includes a power detection unit that detects the presence / absence of power supply from the outside, and a wireless communication function of the nonvolatile storage device according to the presence / absence of power supply detected by the power supply detection unit.
- a processor that transmits an instruction to switch between valid and invalid to the nonvolatile storage device, and the wireless communication function control unit switches power on and off of the wireless communication unit according to an external instruction,
- the wireless controller in the wireless controller may be a standby unit that switches between wireless data communication functions.
- the nonvolatile storage system of the present invention is physically removable from the host device and the host device, and performs data communication with the host device in a wired manner.
- a non-volatile storage system having a wireless communication function and a wireless host device that performs wireless data communication with the non-volatile storage device, wherein the non-volatile storage device stores data
- the non-volatile storage device stores data
- the host device Supplied from the host device and a wireless communication unit that performs wireless data communication with the wireless host device by receiving power and power, and reads and writes data to and from the nonvolatile memory
- a wireless controller having a wireless communication function control unit for switching power on and off, and power supplied from the host device.
- a plurality of independent power lines including a power line for supplying power to the wireless controller, and the host device detects the presence or absence of external power supply.
- a power supply detection unit and a plurality of independent power supply lines of the nonvolatile storage device, and a power supply terminal for supplying power to the wireless controller, and each portion except for the wireless controller of the nonvolatile storage device A plurality of independent power supply terminals for supplying power, a power supply section for intermittently connecting the power supply terminals for supplying power to the wireless controller, and the wireless power supply according to the presence or absence of power supply detected by the power supply detection section.
- a processor that transmits to the power supply unit an instruction to switch between connection and disconnection of a power supply terminal that supplies power to the controller.
- the power consumption of the host device can be reduced, and the performance against access to the user power can be reduced. Can be avoided.
- the user can arbitrarily switch between enabling and disabling the wireless communication function, so that the function of the nonvolatile storage device as a file server is limited. Power S can be. As a result, it is possible to limit reading and writing of data to the nonvolatile storage device from the outside in a state that the user cannot recognize.
- FIG. 1 is a diagram showing a configuration of a nonvolatile memory system according to Embodiment 1 of the present invention. It is.
- FIG. 2 is a schematic diagram showing a configuration of a nonvolatile memory system according to Embodiment 1 of the present invention.
- FIG. 3 is a sequence diagram showing an operation of the nonvolatile memory system according to Embodiment 1 of the present invention.
- FIG. 4 is a diagram showing a configuration of a nonvolatile memory system according to Embodiment 2 of the present invention.
- FIG. 5 is a sequence diagram showing an operation of the nonvolatile memory system according to Embodiment 2 of the present invention.
- FIG. 6 is a diagram showing a configuration of a nonvolatile memory system according to Embodiment 3 of the present invention.
- FIG. 7 is a sequence diagram showing an operation of the nonvolatile memory system according to Embodiment 3 of the present invention.
- FIG. 8A is a diagram showing an example of the form of the switch 260 in the third embodiment of the present invention.
- FIG. 8B is a diagram showing an example of the form of the switch 260 in the third embodiment of the present invention.
- FIG. 9A is a diagram showing an example of the form of the switch 260 in the third embodiment of the present invention.
- FIG. 9B is a diagram showing an example of the form of the switch 260 in the third embodiment of the present invention.
- FIG. 10 is a diagram showing a configuration of a nonvolatile memory system according to Embodiment 4 of the present invention.
- FIG. 11 is a schematic diagram showing a configuration of a nonvolatile memory system according to Embodiment 4 of the present invention.
- FIG. 12 is a sequence diagram showing an operation of the nonvolatile memory system according to Embodiment 4 of the present invention.
- FIG. 13 shows a configuration of a nonvolatile memory system according to Embodiment 5 of the present invention. It is a figure.
- FIG. 14 is a sequence diagram showing the operation of the nonvolatile memory system according to Embodiment 5 of the present invention.
- FIG. 1 is a block diagram showing a configuration example of the nonvolatile memory system according to Embodiment 1 of the present invention.
- the configuration of the nonvolatile storage system according to the present embodiment includes a wired host 100a, a memory card 200a that is a nonvolatile storage device, a wireless host 300, and a voltage source 400.
- the thick solid line represents the power supply line for supplying power
- the double solid line represents the data and command signal lines.
- the memory card 200a is a nonvolatile storage device capable of reading and writing data by the wired host 100a.
- the memory card 200a can be used by physically connecting to the wired host 100a that is the host device and obtaining power.
- FIG. 2 is a schematic diagram showing a configuration example of the nonvolatile memory system according to the present embodiment.
- the fountain host 100a has a user interface such as a display and buttons.
- the memory card 200a includes an antenna for wireless communication.
- the wireless host 300 is a personal computer, for example.
- the memory card 200a is inserted into the wired host 100a which is a PDA. In this state, the memory card 200a is supplied with power from the wired host 100a and can be connected to the external wireless host 300 by the internal wireless communication unit working.
- the wired host 100 a includes a user interface (IF) 110, a processor 111 a, and a memory card data interface (IF) 112.
- the wired host 100a further includes a power supply unit 113a, a battery 114, a charging unit 115, and a remaining amount detection unit 116.
- the user interface 110 is a group of interfaces with a user who operates the wired host 100a.
- the user interface 110 is an input interface such as a microphone, a keyboard, or a switch.
- it includes output interfaces such as speakers and displays.
- the user interface 110 receives input from the user through, for example, a graphical user interface (GUI) on a display and transmits the input content to the processor 11 la.
- GUI graphical user interface
- the processor 11 la controls the entire wired host 100a, and also controls reading and writing of files with respect to the memory card 200a.
- the processor 11 la transmits and receives data and commands to and from the memory card data IF 112 based on the input contents from the user transmitted from the user interface 110. Further, the processor 11 la obtains information on the remaining amount of the battery from the remaining amount detection unit 116 described later.
- the memory card data IF112 controls reading and writing of data using an interface of a plurality of signal lines excluding the power supply among the interfaces with the memory card 200a.
- the memory card data IF112 transmits data and commands transmitted from the processor 11la to the memory card 200a, and transmits data and commands transmitted from the memory card 200a to the processor 11la.
- the power supply unit 113a controls the interface with the memory card 200a related to the power supply, and supplies the power supplied from the battery 114 to the memory card 200a.
- the battery 114 is a storage battery that can be charged from the outside.
- the battery 114 supplies power to the power supply unit 113a and is charged by the charging unit 115.
- the charging unit 115 charges the battery 114 using the power supplied from the voltage source 400.
- the remaining amount detection unit 116 measures the remaining amount of the battery 114, and notifies the processor unit 11la that the remaining amount is low when the remaining amount is below a predetermined value. is there.
- the memory card 200a includes a wireless controller 210a, a controller 220a, and a flash memory 230.
- the memory card 200a is wired to the wired host 100a via the memory card data IF1 12 of the wired host 100a and the power supply unit 113a. It is connected.
- the wireless controller 210a, the controller 220a, and the flash memory 230 are connected to the power supply unit 113a via a power line, and the controller 220a is further connected to the memory card data IF112 via a data line.
- the wireless controller 210a includes a wireless communication unit 211a, a final server unit 212, a file system management unit 213, and a standby unit 214.
- the wireless communication unit 21 la transmits and receives data and commands to and from the wireless host 300 through wireless communication, and transmits and receives data and commands to and from the file server unit 212.
- the wireless communication unit 21 la is connected to the file server unit 212 via a signal line, and further connected to the standby unit 214 via a power line!
- the file server unit 212 controls reading and writing of data in the file base with the wireless host 300 via the wireless communication unit 21 la, and transmits and receives file data to and from the file system management unit 213. .
- the file server unit 212 is connected to the wireless communication unit 21 la and the file system management unit 213 through signal lines.
- the file system management unit 213 manages the file system structure of file data transmitted / received to / from the wireless host 300.
- the file system management unit 213 is connected to the file server unit 212 and the host interface 221a of the controller 220a through signal lines.
- the standby unit 214 is a wireless communication function control unit, and controls power on and off of the wireless communication unit 21la in accordance with a signal received from the host interface 221a of the controller 220a.
- the standby unit 214 is connected to the wireless communication unit 21 la via a power line, and is further connected to the host interface 221a via a signal line.
- the controller 220a includes a host interface (IF) 221a and a memory interface (IF) 222.
- IF host interface
- IF memory interface
- the host interface 221a controls an interface with the wired host 100a related to data transmission / reception, and also controls an interface related to data transmission / reception with the wireless controller 210a.
- the host interface 221a is connected to the memory card data IF112, the memory interface 222, the fine system management unit 213, and the standby unit 214 of the fountain host 100a through signal lines.
- the memory interface 222 controls an interface related to reading and writing of data with respect to the flash memory 230, and is connected to the flash memory 230 through a signal line.
- the flash memory 230 is a non-volatile memory such as a NAND flash memory, and is connected to the memory interface 222 of the controller 220a through a signal line.
- the wireless host 300 is a host device that reads data from and writes data to the memory card 200a, and reads and writes data to and from the memory card 200a wirelessly via the wireless communication unit 21la. Send and receive.
- the voltage source 400 is a power source for charging the battery of the wired host by being connected to the wired host.
- the voltage source 400 is connected to the charging unit 115 of the wired host 100a.
- the wired host 1 has such a configuration.
- the power source is supplied to the 00a force, the non-spring roller 210a, the roller 220a, and the flash memory 230.
- the initial state of the memory card 200a is a state in which the standby unit 214 of the memory card 200a has turned off the power of the wireless communication unit 21 la. Assume that it is impossible.
- the function of the memory card 200a as a file server is invalid when the wireless host 300 is inaccessible to the memory card 200a, the accessible state is when the memory card 200a file server is disabled.
- the function as a server is valid.
- the instruction issued by SI is sent from the host processor 11 la to the host interface 221a of the memory card 200a via the memory card data IF112 as a command for instructing power-on to the wireless communication unit 21la. Sent.
- the host interface 221a transmits this command to the standby unit 214.
- the standby unit 214 Upon receiving the command, the standby unit 214 turns on the power of the wireless communication unit 21 la, and the wireless communication unit 21 la enters an operating state (S2). .
- S2 operating state
- the wireless communication function of the wireless communication unit 2 11a is enabled.
- the memory card 200a whose power is supplied to the wireless communication unit 21la recognizes the wireless host 300 (S3), and then a connection is established between the memory card 200a and the wireless host 300 (S4). This activates the function of the memory card 200a as a file server.
- the instruction issued in S6 is transmitted from the processor 11la to the host interface 221a of the memory card 200a through the memory card data IF112 as a command to instruct the wireless communication unit 21la to turn off the power. .
- the host interface 221a transmits this command to the standby unit 214, and the standby unit 214 that has received the command cuts off the power supply of the wireless communication unit 21la, and the wireless communication unit 21la stops functioning (S7).
- the wireless communication function of the wireless communication unit 21 la is disabled, and at the same time, the function of the memory card 200a as a file server is also disabled.
- the memory card axis is partially a thick solid line. This indicates the effective period P1 during which the wireless communication function of the wireless communication unit 21 la is active.
- the user can arbitrarily switch on / off the power of the wireless communication unit 21 la. This also prevents the wireless communication unit 21 la from consuming power wastefully.
- FIG. 4 is a block diagram showing a configuration example of the nonvolatile storage system according to Embodiment 2 of the present invention.
- the configuration of the nonvolatile storage system of the present embodiment includes a wired host 100b, a memory card 200b that is a nonvolatile storage device, a wireless host 300, and a voltage source 400.
- FIG. 4 the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- memory power A description will be given of the node 200b, the line controller 210b, the line communication lb, and the host interface (IF) 212b of the controller 220b.
- the processor 11 lb controls the entire wired host 100b as well as the processor 11 la of the first embodiment, and also controls reading and writing of files with respect to the memory card 200b.
- the processor 11 lb in the present embodiment instructs the power supply unit 113b, which will be described later, to turn on and off the power to the memory card 200b based on the content input by the user via the user interface 110.
- the command to send is sent.
- the power supply unit 113b supplies the power supplied from the battery 114 to the memory card 200b.
- the power supply unit 113b has a plurality of power terminals respectively connected to the wireless communication unit power supply line 240 connected to the wireless controller 210b and the memory unit power supply line 250 connected to the controller 220b and the flash memory 230! / Further, the power supply unit 113b controls the interface with the memory card 200b related to the power supply, and turns on and off the power independently for the wireless communication unit power supply line 240 and the memory unit power supply line 250, respectively. Is to switch.
- the wireless communication unit 21 lb transmits and receives data and commands to and from the wireless host 300 through wireless communication, and also transmits and receives data and commands to and from the file server unit 212. Is. Unlike the wireless communication unit 21 la of the first embodiment, the power is obtained directly from the wireless communication unit power supply line 240 without using a block like the standby unit 214.
- the host interface 221b controls an interface related to data transmission / reception with respect to the wired host 100b, and also controls an interface related to data transmission / reception with respect to the wireless controller 210b.
- the host interface 221b is connected to the memory card data IF112, the file system management unit 213, and the memory interface 222 of the wired host 100b via signal lines.
- the power supply unit 113b turns on the power to the memory unit power supply line 250 and turns off the power to the wireless communication unit power supply line 240. Assume that no power is supplied to 210b and access to the memory card 200b from the wireless host 300 is impossible.
- the instruction issued in SI 1 is transmitted from the processor 11 lb to the power supply unit 113b as a command for instructing power-on to the wireless controller 210b.
- the power supply unit 113b turns on the power to the wireless communication unit power supply line 240, and the wireless controller 210b enters an operating state (S12). This enables the wireless communication function of the wireless communication unit 21 lb.
- the memory card 200b with the wireless communication function 21 lb enabled is a wireless host
- the instruction issued in S16 is transmitted from the processor 11 lb to the power supply unit 113b as a command to instruct the wireless controller 210b to turn off the power.
- the power supply unit 113b disconnects the power to the wireless communication unit power supply line 240 and The controller 210b stops functioning (S 17).
- the wireless communication function of the wireless communication unit 21 lb is disabled, and the function of the memory card 200b as a file server is also disabled.
- the force of the memory card axis that is partly a thick solid line indicates the effective period P2 of the wireless communication function of the wireless communication unit 21 lb.
- the user can arbitrarily switch on / off the power of the wireless controller 210b. This also prevents the wireless controller 210b from consuming unnecessary power.
- FIG. 6 is a block diagram showing a configuration example of the nonvolatile storage system according to Embodiment 3 of the present invention.
- the configuration of the nonvolatile storage system of the present embodiment includes a wired host 100c, a memory card 200c that is a nonvolatile storage device, and a wireless host 300.
- FIG. 6 the same parts as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the switch 260 of the wired host 100c and the memory card 200c will be described.
- the fountain host 100c is a conventional host device, and when the memory card 200c is attached, the attachment is detected and power is supplied to the memory card 200c.
- the switch 260 is a wireless communication function control unit, and includes a wired host 100c and a wireless controller 2
- the switch 260 switches between turning on and off the power of the wireless controller 210b.
- power is supplied to the wired host 100c force, the non-spring controller 210b, the controller 220b, and the flash memory 230.
- the memory card 200c is mounted on the wired host 100c and power is supplied to the memory card 200c, and the switch 260 is connected to the wired host 100c.
- the power line connecting c and the wireless controller 210b is disconnected. As a result, power is not supplied to the wireless controller 210b, and access from the wireless host 300 to the memory card 200c is impossible.
- the memory card 200c with the 21 lb wireless communication function enabled is a wireless host
- FIGS. 9A and 9B show the state of the antenna 261 connected to the switch 260.
- FIG. 8A shows the state of the antenna 261 connected to the switch 260.
- FIG. 8B shows the switch 260 when the antenna 261 is raised, the switch 260 is pushed down, and the switch 260 is turned on.
- FIG. 8B when the antenna 261 is tilted, the push of the switch 260 is released and the switch 260 is turned off.
- FIGS. 9A and 9B shows another shape of the switch.
- FIG. 9A and 9B show the state of the movable part 262 connected to the switch 260.
- FIG. The switch 260 is linked to the slide of the movable part 262, and the switch 260 can be intermittently connected by the slide of the movable part 262.
- FIG. 9A when the movable part 262 is slid to the right in the figure, the switch 260 is pressed, and the switch 260 is turned on.
- FIG. 9B when the movable part 262 is slid to the left in the figure, the push of the switch 260 is released, and the switch 260 is turned off.
- the file server function can be switched between valid and invalid by switching the switch 260 on and off using the antenna 261 and the movable part 262.
- the switch 260 can be connected and disconnected, a configuration other than the antenna 261 and the movable portion 262 may be used.
- the power supply of the wireless controller 210b can be turned on and off without requiring a special mechanism in the host device.
- FIG. 10 is a block diagram showing a configuration example of the nonvolatile memory system according to Embodiment 4 of the present invention.
- FIG. 11 is a diagram illustrating a state in which the wired host 100d according to the present embodiment is attached to the voltage source 400.
- the configuration of the nonvolatile storage system of the present embodiment includes a wired host 100d, a memory card 200a that is a nonvolatile storage device, a wireless host 300, and a voltage source 400.
- FIG. 10 the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the processor 111c and the power supply detection unit 117 of the wired host 100d will be described.
- the processor 111c receives a notification from the power supply detection unit 117 and transmits a command to the memory card data IF112.
- the power source detection unit 117 detects that the voltage source 400 is connected and notifies the processor 111c.
- the user connects the wired host 100d to the voltage source 400 (S31).
- the power detection unit 1 17 notifies the processor 111c that the voltage source 400 is connected.
- This notification is transmitted from the processor 111c to the host interface 221a of the memory card 200a via the memory card data IF112 as a command for instructing power-on to the wireless communication unit 21la.
- the host interface 221a transmits this command to the standby unit 214.
- the standby unit 214 turns on the power of the wireless communication unit 21 la, and the wireless communication unit 221 enters the operating state (S32). .
- the memory card 200a whose power is supplied to the wireless communication unit 21la recognizes the wireless host 300 (S33), and then establishes a connection between the memory card 200a and the wireless host 300 (S34).
- the function of the memory card 200a as a file server is enabled.
- the power detection unit 117 When the user disconnects the wired host 100d from the voltage source 400 (S36), the power detection unit 117
- the processor 111c is notified that the voltage source 400 is disconnected. This notification is transmitted from the processor 111c to the host interface 221a of the memory card 200a via the memory card data IF112 as a command for instructing the wireless communication unit 21la to turn off the power.
- the host interface 221a transmits this command to the standby unit 214.
- the standby unit 214 turns off the power of the wireless communication unit 21la, and the wireless communication unit 211a stops functioning.
- the power of the memory card axis is a part of a thick solid line. These are the power supply period P4 in which the power source detection unit 117 detects the voltage source 400, and the wireless communication unit 21 la.
- the validity period P5 of the wireless communication function is shown.
- the nonvolatile storage system in the present embodiment has a configuration in which the power source detection unit 117 is incorporated in the nonvolatile storage system in the first embodiment, and the non-volatile property in the second embodiment.
- the power supply detection unit 117 can also be incorporated in the storage system.
- power supply detection section 117 is incorporated into the nonvolatile storage system in FIG. 4 of the second embodiment. Then, it is connected to the voltage source 400 with a power line, and further connected to the power supply unit 113b with a signal line.
- the power source detection unit 117 detects that the voltage source 400 is connected and notifies the processor 11 lb.
- the processor 11 lb transmits a command for instructing power-on to the wireless controller 210b to the power supply unit 113b.
- the power supply unit 113b that has received this command supplies power to the wireless communication unit power supply line 240, thereby turning on the power to the wireless communication unit 210b.
- the power source detection unit 117 detects that the voltage source 400 is disconnected and notifies the processor 11 lb.
- the processor 11 lb transmits a command for instructing the wireless controller 210b to turn off the power to the power supply unit 113b.
- the power supply unit 113b that has received this command can cut off the power supply to the wireless communication unit 210b by stopping the supply of power to the wireless communication unit power supply line 240.
- the user can connect the power source of the wireless controller and the wireless communication unit 21 la by simply connecting and disconnecting the wired host 100d and the voltage source 400 without performing complicated operations. Can be intermittent.
- FIG. 13 is a block diagram showing a configuration example of the nonvolatile memory system according to Embodiment 5 of the present invention.
- the configuration of the nonvolatile storage system according to the present embodiment includes a wired host 100e, a memory card 200d that is a nonvolatile storage device, a wireless host 300, and a voltage source 400.
- FIG. 13 the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the memory card file IF118 of the wired host 100e and the controller 220c of the memory card 200d will be described.
- the memory card file IF118 controls reading and writing of a file by using an interface of a plurality of signal lines excluding the power supply among the interfaces with the memory card 200d.
- the memory card file interface (IF) 118 transmits the file data and command transmitted from the processor 11 la to the memory card 200 d, and transmits the file data and command transmitted from the memory card 200 d to the processor 11 la.
- the controller 220c includes a host interface (IF) 221c, a memory interface (IF) 222, a file server unit 223, and a file system management unit 224.
- IF host interface
- IF memory interface
- IF file server unit
- the file server unit 223 controls reading and writing of file data between the memory card file IF118 of the wired host lOOe and the wireless communication unit 21 la, and transmits and receives file data to and from the file system management unit 224. It is.
- the file server unit 223 is connected to the standby unit 214, the memory card file IF 118, the wireless communication unit 211a, and the file system management unit 224 through signal lines.
- the file system management unit 224 manages the file system structure of file data transmitted / received between the wired host lOOe and the wireless host 300.
- the file system management unit 224 is connected to the file server unit 223 and the host interface 221c through signal lines.
- the host interface 221c controls an interface related to data transmission / reception with respect to the wired host lOOe and the wireless host 300.
- the host interface 221 c is connected to the memory interface 222 and the file system management unit 224 through signal lines.
- the standby unit 214 of the memory card 200d is in a state where the power of the wireless communication unit 21 la is cut off, and the wireless host 300 power is accessed to the memory card 200d. Assume that it is impossible.
- the instruction issued in S41 is transmitted from the processor 11la to the file server unit 223 of the memory card 200d via the memory card file IF118 as a command for instructing power-on to the wireless communication unit 21la.
- the file server unit 223 transmits this command to the standby unit 214, and the standby unit 214 that has received the command turns on the wireless communication unit 21la, and the wireless communication unit 211 & functions 42).
- the wireless communication unit 21 la The line communication function is enabled.
- the memory card 200d whose power is supplied to the wireless communication unit 21 la recognizes the wireless host 300 (S43), and then establishes a connection between the memory card 200d and the non-spring host 300 (S44).
- the function of the memory card 200d as a file server is enabled.
- the instruction issued in S46 is transmitted from the processor 11la to the file server unit 223 of the memory card 200d through the memory card file IF118 as a command to instruct the wireless communication unit 21la to turn off the power.
- the file server unit 223 transmits this command to the standby unit 214, and the standby unit 214 that has received the command turns off the power of the wireless communication unit 21la, and the wireless communication unit 21la stops functioning (S47).
- the wireless communication function of the wireless communication unit 21 la is disabled, and the function of the memory card 200d as a file server is also disabled. Note that in the sequence diagram of FIG. 14, the force of the memory card axis that is partly a solid line indicates the effective period P6 of the wireless communication function of the wireless communication unit 221.
- the file server unit and the file system management unit are installed in the controller 220c instead of the wireless controller 220c.
- file management problems when a plurality of wired and wireless hosts access the memory card 200d at the same time can be avoided.
- file management for access from multiple hosts is performed by a single file system management unit, so that data from one file cannot be modified simultaneously by multiple hosts, thus preventing file data corruption. That's the power S.
- Embodiments 1 to 5 of the present invention it is possible to switch between enabling and disabling the wireless communication function of a memory card only by an instruction or operation of a user operating a wired host. . Therefore, it is possible to prevent a third party from sharing memory card data through the wireless communication function against the user's will. In other words, even if a user uses a memory card attached to the host, it prevents another host that can perform wireless communication from reading or writing data on the memory card. it can. As a result, it is possible to avoid a decrease in access performance to the memory card from the host in which the memory card is installed and unnecessary consumption of the battery.
- the wired host is a PDA and the memory card is mounted on the PDA. This allows the memory card to transfer files to and from the wireless host without going through the wired host.
- a memory card that uses a flash memory as the nonvolatile storage device is used.
- the present invention is of any type as long as it is a nonvolatile storage device. Even so, the effects of the present invention can be obtained.
- it may be a hard disk drive that performs magnetic recording, an optical disk, or battery-backed SRAM! /.
- it may be composed of a combination of a plurality of types of nonvolatile memory devices.
- a combination of a semiconductor memory such as a NAND flash memory and a hard disk may be used.
- the present invention does not limit the internal configuration of the memory card to the three physical chips of the controller, flash memory, and wireless controller.
- the controller, flash memory, and wireless controller can be configured on two or fewer chips, or on four or more chips! /.
- the present invention can be applied to a non-volatile storage system using a memory card having a wireless communication function.
- the operation of the wireless communication function can be performed by a user's own instruction or operation handling the memory card. This will contribute to the convenience of the user who can decide whether or not to accept.
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Sources (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US12/374,670 US8169848B2 (en) | 2006-07-26 | 2007-07-26 | Nonvolatile memory device, nonvolatile memory system, and access device |
JP2008526808A JP5145227B2 (ja) | 2006-07-26 | 2007-07-26 | 不揮発性記憶装置、不揮発性記憶システム、及びホスト機器 |
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JP2006203536 | 2006-07-26 | ||
JP2006-203536 | 2006-07-26 |
Publications (1)
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WO2008013230A1 true WO2008013230A1 (fr) | 2008-01-31 |
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ID=38981541
Family Applications (1)
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PCT/JP2007/064677 WO2008013230A1 (fr) | 2006-07-26 | 2007-07-26 | dispositif de stockage non volatil, système de stockage non volatil et dispositif d'hôte |
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US (1) | US8169848B2 (ja) |
JP (1) | JP5145227B2 (ja) |
WO (1) | WO2008013230A1 (ja) |
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JP2012204880A (ja) * | 2011-03-23 | 2012-10-22 | Toshiba Corp | メモリ装置及びその制御方法 |
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Also Published As
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US8169848B2 (en) | 2012-05-01 |
JP5145227B2 (ja) | 2013-02-13 |
US20090210621A1 (en) | 2009-08-20 |
JPWO2008013230A1 (ja) | 2009-12-17 |
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