KR101765042B1 - Access management method of memory and service device thereof - Google Patents

Abstract

The present invention relates to a method and apparatus for managing access to a storage medium that minimizes data corruption by minimizing access time for reading and writing to a storage medium such as a memory card and a terminal apparatus using the method. A control unit having an access management module for reading and writing data from / to a storage medium through an input / output interface unit and for reading and writing data in blocks of a predetermined size, .

Description

Technical Field [0001] The present invention relates to an access management method for a storage unit,

The present invention relates to a method for managing access to a storage medium, a terminal apparatus and a service system using the same, and more particularly, to a storage medium capable of minimizing data destruction by minimizing access time for reading and writing An access management method for the same, and a terminal device and a service system using the same.

2. Description of the Related Art With the recent development of electronic and communication technologies, various portable devices such as mobile phones, digital cameras, MP3 players, DMB receivers, navigation devices, PDA devices, and camcorders have become popular.

In addition, there is a need for a storage device capable of storing various user data such as photographs, moving pictures, documents, audio files and the like in such a portable device. Such storage means must retain the stored data even without power. Accordingly, various types of storage media that can be used in various portable apparatuses have been introduced and used.

Examples of storage media typically used include a Secure Digital (SD) memory card, a Smart Media card, a CompactFlash (CF) memory card, a memory stick, and the like.

Among these, the SD memory card is a flash memory card managed by the SCA (SD Card Association). Since the SD memory card is small and light in weight, it is mainly used for a storage device of a small digital device such as a mobile phone, a digital camera, and a digital camcorder. The file system of the SD memory card is FAT16, and password setting for data security is possible.

Conventionally, when information is written to or read from such a memory card, an API (Application Programming Interface) provided by the operating system of the portable terminal device is used without proper access control according to the characteristics of the memory card , The same processing as that in the other storage device was performed.

This is because the memory card gradually becomes larger and faster as in recent years, and as the operation for a large amount of data is written to the memory card, the file system of the memory card is damaged during reading and writing of data repeatedly, There is a case where the entire data recorded on the memory card as well as the data being transmitted is lost.

Korean Patent Laid-Open Publication No. 10-2000-0032881, published Jun. 15, 2000 (Name: Data storage device and method of portable terminal)

The present invention relates to a method for managing access to a storage medium that minimizes data destruction by minimizing access time for reading and writing to a storage medium, Service system.

According to an aspect of the present invention, there is provided a service apparatus for reading and writing data on a storage medium, the apparatus comprising: And a terminal device connected to the service device to transmit data to the service device or receive data from the service device.

According to another aspect of the present invention, there is provided a data processing apparatus including: a storage unit for storing data; A service providing unit that receives data from a terminal device and instructs the storage unit to write data, or transmits data read from the storage unit to a terminal device; And an access management unit accessing the storage unit to perform reading or writing of data in blocks of a predetermined size.

According to another aspect of the present invention, there is provided an information processing apparatus comprising: an input / output interface unit for providing an input / output interface with a storage medium; And a control unit having an access management module for reading and writing data from and to the storage medium through the input / output interface unit, and for reading and writing data in block units of a predetermined size .

In the terminal device according to the present invention, the access management module accesses the corresponding file of the storage medium only while the data read and write operations are performed on a block-by-block basis, And the file is not accessed in the idle section.

In the terminal device according to the present invention, the access management module controls file access time by considering at least one of file access information, system environment information, application program operation status, and status of waiting data blocks.

The terminal device according to the present invention may further include a storage unit, which is executed by the control unit and stores an application program for requesting reading or writing of data with respect to the storage medium.

The terminal device according to the present invention may further include a storage medium physically connected to the input / output interface unit.

In the terminal device according to the present invention, the storage medium may be a secure digital (SD) memory card, a smart media card, a compact flash (CF) memory card, a memory stick, a USB memory card, an identification module card, and a multimedia memory card (MMC: Multi Media Card).

In addition, the present invention provides, as means for solving the problems, a method for controlling access to a storage medium, comprising: setting a block size and an idle time for access control to a storage medium; Confirming a read or write request of data to the storage medium; And reading or writing the data requested to be read or written to the storage medium in block units according to the set block size and idle time.

The method of managing data access to a storage medium according to the present invention may further include a step of requesting an application program to be executed to read or write data.

In the data access management method for a storage medium according to the present invention, the block size is set in consideration of system compatibility and stability.

In the method of managing data access to a storage medium according to the present invention, the step of performing reading or writing on a storage medium includes a step of blocking the data requested to be read or written into a plurality of data blocks having a set block size .

In the method of managing data access to a storage medium according to the present invention, the step of performing reading or writing on a storage medium may further include serializing a plurality of data blocks arranged in a line.

In the method of managing data access to a storage medium according to the present invention, the step of performing reading or writing on a storage medium includes the steps of: reading or writing a data block; Closing the file and waiting for a predetermined idle time, and checking whether there is a waiting data block when the idle time elapses, so that if there is a waiting data block, reading or writing is performed on the waiting data block Step < / RTI >

The present invention relates to a method for reading and writing data on a storage medium including a memory card, the method comprising: setting a block size in consideration of system compatibility and stability; reading and writing data in block units of a set size; After reading and writing data in block units, idle time is set so that the file is not opened during the idle time, so that even if a large amount of data is stored or read, And as a result, there is an excellent effect that the stability against use of a storage medium such as a memory card can be improved.

In addition, the present invention minimizes file access time by controlling the access timing of files on a storage medium such as a memory card based on the system environment, the operation status of application programs, and the status of waiting memory blocks as well as file access information Thereby improving the stability of a storage medium such as a memory card.

1 is a block diagram illustrating a structure of a service system according to an embodiment of the present invention.
2 is a block diagram illustrating a configuration of a service apparatus in a service system according to an embodiment of the present invention.
3 is a block diagram illustrating a configuration of a terminal apparatus according to another embodiment of the present invention.
4 is a block diagram illustrating a connection relationship between an access management module and other components in a terminal device according to another embodiment of the present invention.
5 is a schematic diagram for explaining an access management method for a storage medium according to another embodiment of the present invention.
6 is a flowchart illustrating an access management method for a storage medium according to another embodiment of the present invention.
FIG. 7 is a detailed flowchart illustrating a data read / write step in a method for managing access to a storage medium according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description and the accompanying drawings, detailed description of well-known functions or constructions that may obscure the subject matter of the present invention will be omitted. It should be noted that the same constituent elements are denoted by the same reference numerals as possible throughout the drawings.

1 is a block diagram illustrating a structure of a service system according to an embodiment of the present invention.

Referring to FIG. 1, a service system according to the present invention may include a terminal device 100 and a service device 400 connected through a communication network 300.

Here, the service system stores the data transmitted from the terminal device 100 in the service device 400 in a storage medium, or the service device 400 reads data from the storage medium and provides the data to the terminal device 100 And may include not only providing such a data read / write service but also providing another service using such data read / write.

For example, the service system may be a cloud computer system in which the service device 400 provides computer resources (server, storage, platform, and software, etc.) to the terminal device 100 via the communication network 300 In this case, the service apparatus 400 performs a necessary operation according to a request of the terminal apparatus 100, and provides the terminal apparatus 100 with the result of the execution. In this process, data can be read from / written to the storage medium in the service device 400, or data can be read / written from / to the storage medium on the terminal device 100 side. In the first embodiment, the former case relates to the case where data is read / written to the storage medium from the service device 400 side.

In the present invention, the service device 400 reads and writes data on a storage medium, and reads and writes data on a block basis of a predetermined size.

At this time, the terminal device 100 accesses the service device 400 and transmits data to the service device 400 or receives data from the service device 400.

Referring to FIG. 2, the service apparatus 400 includes a service providing unit 410, an access management unit 420, a service providing unit 420, And a storage unit 430.

The service provider 410 provides an arbitrary service including a climbing computing service to the terminal device 100 and receives data from the terminal device 100 as needed in the process of providing the service, And instructs writing to the storage unit 430 made of a storage medium or transmits the data read from the storage unit 430 to the terminal device 100. [

The access management unit 420 accesses the storage unit 430 and reads and writes data substantially in accordance with an instruction from the service provider 410. In particular, Or writing.

In addition, the access management unit 420 accesses the file of the storage unit 430 only while data is being read and written in units of blocks with an idle time between data read or write operations on a block-by-block basis, Do not access the file for a period of time. At this time, data reading or writing may be performed alternately.

In addition, the access management unit 420 collects the blocks read from the storage unit 430 and constructs the data to transfer the blocks to the service providing unit 410. In order to minimize the access time in managing access to the storage unit 430 as described above, the access manager 420 accesses one of the file access information, the system environment information, the application program operation status, and the status of the waiting data block Considering the above, you can control the file access point.

Meanwhile, in another embodiment of the present invention, the terminal device 100 can perform data reading / writing on a storage medium directly connected to the terminal device 100 according to the present invention. In the following embodiments, a memory card will be described as a storage medium used by the terminal device 100. [

3 is a block diagram showing a configuration of a terminal device according to another embodiment of the present invention.

The terminal device 100 to which the present invention is applied may be any apparatus that can use a storage medium such as a memory card. For example, the terminal device 100 may include a mobile phone, a smart phone, a PDA (Personal Digital Assistant), a portable multimedia player (PMP), an MP3 player, a camcorder, a camera, a tablet PC, Any device including a storage medium such as a memory card or an input / output interface for a storage medium such as a memory card may be used.

Referring to FIG. 3, a terminal device 100 according to the present invention includes one or more peripheral devices 110, a control unit 120, and a storage unit 130.

The at least one peripheral device 110 is a generic representation of the remaining devices of the terminal device 100 except for the control unit 120 and the storage unit 130. The at least one peripheral device 110 has a unique function, And provides the result to the control unit 120. [ The terminal device 100 according to the present invention includes a peripheral device 110 and an input / output interface unit 116 that is physically connected to the memory card 200 and performs data input / output. In addition, the terminal device 100 according to the present invention includes an input unit 111 for generating a user input signal in response to a user's operation, a communication unit 112 for transmitting and receiving data according to a predetermined communication method, A display unit 113 for displaying screen data generated according to the operation of the terminal device, an audio processing unit 114 including a microphone and a speaker for inputting and outputting a voice signal, a camera unit (115). ≪ / RTI > Although not all of the examples of the peripheral device 110 can be enumerated, various types of deformation of the portable device can be enumerated according to the convergence trend of the digital device. However, It will be understood by those skilled in the art that the present invention may be further incorporated into a terminal according to an embodiment of the present invention.

The control unit 120 controls the peripheral device 110 to perform a specific function. In particular, the control unit 120 includes the access management module 121 according to the present invention. The access management module 121 can be implemented by hardware, software, or a combination of hardware and software. For example, the access management module 121 may be implemented as an API provided by the platform of the terminal device 100, or may be implemented as a program independent of the platform.

The access management module 121 controls reading and writing of data with respect to the memory card 200 through the input / output interface unit 116, and reads and writes data in block units of predetermined sizes. In addition, the access management module 121 accesses the file of the memory card only while the block-by-block data read and write operations are performed with idle time between the data read or write operations of block units, . At this time, data reading or writing may be performed alternately. In addition, the access management module 121 collects the blocks read from the memory card 200 and provides the data to the application program requesting to read the corresponding data. In order to minimize the access time in managing access to the memory card as described above, the access management module 200 considers at least one of file access information, system environment information, application program operation status, and status of waiting data blocks You can control when files are accessed.

The storage unit 130 is an apparatus for storing data and programs necessary for the operation of the terminal apparatus 100 and includes not only a read only memory (ROM), a read access memory (RAM), a hard disk drive Flash memory, CD-ROM, DVD, and the like. In the present invention, the storage unit 130 stores an operating system (OS) 130 and an application program 132 executed by the control unit 120, for example. The operating system 130 manages various hardware of the terminal device 100 and provides an environment that an application program can use. The application program 132 is executed based on the operating system 131 to provide a specific function or service and generally calls an open API provided by the operating system 131 and uses the specific hardware of the terminal device 100 Perform the required function. In the present invention, the application program 132 may request reading or writing of data to / from the memory card 200 during operation. For example, in the case of an application program for schedule management, schedule management data may be stored in the memory card 200 or the schedule management data stored in the memory card 200 in response to a user's request.

In addition, the memory card 200 is a memory card capable of reading and writing data, such as an SD memory card, a smart media card, a CompactFlash (CF) memory card, a memory stick, a USB memory card, A smart card, a SIM (Subscriber Identity Module) card, and a multimedia memory card (MMC: Multi Media Card). However, the present invention is not limited thereto, and any kind can be applied as long as the present invention can be applied.

4 is a block diagram showing the connection relationship between the access management module 121 and other components in the terminal device 100 according to the embodiment of the present invention.

4, the memory card 200 is physically connected to the input / output interface unit 116 and is controlled by the access management module 121 provided in the control unit 100 through the input / output interface unit 116 Read or write data. In addition, the access management module 121 performs access control on the memory card 200 to perform the request according to a data read or write request of the application program 131.

5 is a diagram illustrating a data read / write process for the memory card 200 performed by the access management module 121. Referring to FIG.

In FIG. 5, 'R' represents read data and 'W' represents write data.

5, during the execution of the application program 132 in the terminal device 100, reading of data stored in the memory card 200 or writing of specific data in the memory card 200 may be requested. At this time, as to the data to be read (read data R) and the data to be written (write data W), their sizes are different from each other as shown in Fig. 5 (a). For example, reading or writing of a large amount of data such as multimedia data may be requested, or reading or writing of a small amount of data such as schedule information may be requested.

The data read or write request of the application program 132 is not processed through the API of the operating system 131 but is processed by the access management module 121. The access management module 121, (b), the data to be read or written is blocked into data blocks of a predetermined block size. Here, the block size can be appropriately set in consideration of system compatibility and stability.

In addition, as shown in FIG. 5C, the access management module 121 arranges a plurality of read or write data blocks divided into a predetermined size in a line and serializes them. At this time, the read data block and the write data block can be alternately arranged.

5 (d), the access management module 121 alternately reads or writes data blocks arranged in the serial manner. At this time, the access management module 121 reads or writes one data block And has an idle time (t) longer than a predetermined time. During the idle time t, the access management module 121 does not open the file of the memory card 200. That is, the file is opened only while reading or writing is being performed.

By the operation of the access management module 121, the memory card 200 always reads and writes data on a block-by-block basis, and idle time is set between read and write operations to prevent data corruption.

Hereinafter, the access management method for the storage medium according to the present invention will be described with reference to FIGS. 6 and 7, according to control procedures.

6 is a flowchart illustrating a basic procedure of an access management method for a storage medium according to an embodiment of the present invention.

Referring to FIG. 6, a block size and an idle time to be used for access management of the memory card 200 are set in the access management module 121 (S100). The block size may be set in consideration of system compatibility or stability, and the idle time may be set to a minimum threshold type.

Then, the access management module 121 confirms a read or write request of data to the memory card 200 (S200). The data read or write request may originate from any application program 132 installed in the terminal device 100 and being executed.

The access management module 121 reads or writes data requested to be read or written to the memory card 200 in block units according to the set block size and idle time S300).

FIG. 7 is a flowchart illustrating a method of accessing a memory card according to an exemplary embodiment of the present invention. Referring to FIG. 7, in step S300, More detailed description will be given below.

Referring to FIG. 7, in step S300, the access management module 121 blocks the data requested to be read or written into a plurality of data blocks having a set block size (S310). If the requested data is equal to or smaller than the set block size in step S310, the requested data may be partly included in one block.

In addition, the access management module 121 arranges and serializes a plurality of data blocks generated in the blocking in a line (S320). Here, the read data block and the write data block can be alternately arranged.

The access management module 121 sequentially reads or writes the serialized data block. After performing a read or write operation on any one data block (S330), the access management module 121 reads or writes the data block When the writing is completed, the file is closed in the memory card 200, and it is checked whether a predetermined idle time has elapsed (S340) while waiting for a predetermined idle time.

As a result of checking, if the idle time has elapsed, it is checked whether there is a data block waiting for reading or writing. If there is a data block waiting, the process goes back to the step S330 for the next data block.

That is, in step S320, the steps S330 and S340 are repeated in order for the plurality of data blocks in accordance with the serialized sequential order to read and write the requested data.

According to the above, it is possible to protect the memory card 200 by keeping the idle time constant and not opening the file for the idle time, even if a large amount of data is requested to be read or written.

The access management method of the storage medium according to the present invention can be implemented in a form of software readable by various computer means and recorded in a computer-readable recording medium. Here, the recording medium may include program commands, data files, data structures, and the like, alone or in combination. Program instructions to be recorded on a recording medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. For example, the recording medium may be an optical recording medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, a compact disk read only memory (CD-ROM), a digital video disk (DVD) Includes a hardware device that is specially configured to store and execute program instructions such as a magneto-optical medium such as a floppy disk and a ROM, a random access memory (RAM), a flash memory, do. Examples of program instructions may include machine language code such as those generated by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like. Such hardware devices may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art. Furthermore, although specific terms are used in this specification and the drawings, they are used in a generic sense only to facilitate the description of the invention and to facilitate understanding of the invention, and are not intended to limit the scope of the invention.

The present invention relates to an apparatus and method for reading and writing data from and to a storage medium such as a memory card by setting the size of a unit block considering system compatibility and stability, By keeping the idle time after reading and writing data in units, the file is not opened during idle time, so that even if a large amount of data is stored or read, the loss of data being transferred or stored is minimized through appropriate access management As a result, there is an excellent effect that the stability against use of a storage medium such as a memory card can be improved.

In addition, the present invention minimizes file access time by controlling the access timing of files on a storage medium such as a memory card based on the system environment, the operation status of application programs, and the status of waiting memory blocks as well as file access information Thereby improving the stability of a storage medium such as a memory card.

100: terminal device
200: Memory card
300: Network
400: Service device
110: peripheral device
111:
112:
113:
114: Audio processor
115:
116: I /
120:
121: access management module
130:
131: Operating system (OS)
132: Application
200: Memory card

Claims (14)

A storage unit for storing data;
A service providing unit that receives data from a terminal device and instructs the storage unit to write data, or transmits data read from the storage unit to a terminal device; And
And an idle time not to access the storage unit is set so that the idle time is not accessed to the storage unit to open the file of the storage unit, An access management unit for controlling the access management unit;
/ RTI >
The access management unit,
A size of a block with respect to an amount of data to be read or written when accessing the storage unit is set, the data is blocked into a data block having the set block size, and a read or write The file is closed to wait for the idle time, and it is checked whether there is a waiting data block after the lapse of the idle time. If it is present, the file is opened and reading or writing is performed on the data block repeatedly ,
Wherein the idle time is set in consideration of at least one of file access information, system environment information, application program operation status, and status of waiting data blocks. delete delete A method for managing data access by a service device,
Setting a size of a block with respect to an amount of data to be read or written when accessing the storage unit once;
Setting an idle time not approaching the storage unit;
Receiving a data or data transmission request from the terminal device and confirming a read or write request of the data in the storage;
Blocking the data requested to be read or written with a data block having the set block size; And
Performing reading or writing on the storage unit in units of the data blocks;
/ RTI >
The step of reading or writing to the storage unit
Closing the file and waiting for the idle time when reading or writing of the data block is completed;
Checking whether there is a pending data block after the idle time has elapsed, and if there is a pending data block, opening the file and performing reading or writing of the pending data block,
Wherein the idle time is set in consideration of at least one of file access information, system environment information, application program operation status, and status of waiting data blocks. 5. The method of claim 4, wherein the block size is
System compatibility and stability of the data access management method. delete delete delete delete delete delete delete delete delete

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