JP2011192139A - Information terminal device - Google Patents

Abstract

An application program and image data required for startup stored in a non-volatile memory at the time of system startup are reliably developed in a volatile memory to shorten the system startup time.
A first expansion is performed to expand a startup file stored in a first memory device to a second memory device when the system is started, and an access history holding unit holds an access history of the first expansion. Based on the access history of the access history holding unit when the first system boot is executed based on the boot file expanded on the second memory device and the operation instruction unit receives an instruction to stop the operation after the first system startup. The second expansion for expanding the file for use from the first memory device to the second memory device is executed. Thereafter, the information terminal device shifts to the operation stop mode, and the operation instruction unit receives an operation restart instruction in the operation stop mode. Then, the second system activation is executed based on the activation file expanded in the second memory device by the second expansion.
[Selection] Figure 2

Description

  The present invention relates to a system activation method for an information terminal device that develops and executes application programs and image data necessary for system activation from a nonvolatile memory to a volatile memory.

  In a conventional information processing apparatus, a necessary application program or image data is expanded from a low-speed non-volatile memory to a high-speed volatile memory when the system is started, and the program is executed using the low-speed non-volatile memory. Takes time to start.

  Therefore, as means for shortening the system start-up time, it is checked whether or not an OS (Operating System) or an application program has been expanded in the volatile memory at the time of system start-up in Patent Document 1, and if it has been expanded, It is known that the expanded data is checked whether it can be normally started on the volatile memory, and if it is normal, the start time is shortened by executing the program.

  Further, in Patent Document 2, when the system is first started, the transfer source and transfer destination address information and the device configuration information are recorded as history information of data read from the nonvolatile memory to the volatile memory. After startup, if there is no device in the configuration of the device, it is possible to shorten the startup time by using DMA (Direct Memory Access) that can transfer data faster than the CPU (Central Processing Unit) using history information Yes.

JP 2003-131880 A JP 2006-126987 A

  However, in the method described in Patent Document 1, if the application program and image data necessary for starting up have been developed in the volatile memory at the time of starting the system, the starting time can be shortened. There is no guarantee that the data required for booting has already been deployed in volatile memory.

  In the method described in Patent Document 2, the high-speed DMA is used to speed up the development process from the nonvolatile memory to the volatile memory, but the development process time is added to the system startup time. There was a problem of being.

  The information terminal device of the present invention includes a first memory device (NAND memory) in which a file for starting a system is stored, a second memory device (RAM) having a higher access speed than the first memory device, An access history holding unit that holds an access history including a file name of a file to be expanded from the first memory device to the second memory device, and an operation instruction unit that receives an instruction to stop and restart the operation. An information terminal device that is activated by a system based on an activation file on the second memory device, and expands the activation file stored in the first memory device to the second memory device when the system is activated The first expansion is executed, and the access history holding unit holds the access history of the first expansion and stores it in the second memory device. A first system activation is executed based on the opened activation file, and after the first system activation, when the operation instruction unit receives an operation stop instruction, the access history holding unit stores the access history. A second expansion is performed to expand the startup file from the first memory device to the second memory device, after which the information terminal device shifts to an operation stop mode, and in the operation stop mode, When the operation instruction unit receives an instruction to resume the operation, the second system activation is executed based on the activation file expanded in the second memory device by the second expansion.

  With this configuration, it is ensured that the data required for system startup has already been expanded in the volatile memory after the second system startup, and further, the processing time for the development from the nonvolatile memory to the volatile memory is reduced. By reducing it, it becomes possible to shorten the system startup time.

  In the information terminal device of the present invention, the system activation file is a plurality of files, and the access history includes the file names of the plurality of files and the order of the plurality of files.

  With this configuration, it is possible to manage access histories of a plurality of files developed from the first memory device to the second memory device at the time of system startup, and to develop necessary files in the order of the files during the second development. It is.

  In the information terminal device of the present invention, the first memory device is non-volatile and the second memory device is volatile.

  With this configuration, application programs and various data information are stored on the non-volatile first memory device, and files necessary for system startup are expanded and used on the second memory device with a high reading speed. Is possible.

  In the information terminal device of the present invention, the stop instruction and the restart instruction are pressing of a power key.

  With this configuration, stop and restart are executed by a user operation, and the startup time can be shortened when the user wants to restart the system.

  Moreover, the information terminal device of the present invention includes a display unit, and the display unit is in a stopped state in the operation stop mode.

  With this configuration, when the operation stop mode is set by a user operation, output to the display unit is stopped, so that the user can recognize that the system is in a stop state.

  The information terminal device of the present invention comprises an operating system that manages a free space in the memory space of the second memory device, and an application program that is included in the system and operates on the operating system, The access history includes the file size of the file to be expanded in the second memory device, and in the second expansion, the total file size of the files in the access history held by the access history holding unit is calculated and the file size is calculated. When the total is within the free space, all the files in the access history are expanded from the first memory device to the second memory device, and when the total file size is larger than the free space, the access history File in front of the first memory device Expand the range to fit to the second memory device.

  With this configuration, even when data necessary for system startup does not fit in the second memory device, it is possible to shorten the startup time after the second system startup.

  In the information terminal device according to the present invention, when the operation instruction unit receives an operation resumption instruction, the operating system secures a free space that is secured while securing a free space in the memory space of the second memory device. The file in the access history that is not expanded in the second memory device but remains in the first memory device is expanded from the first memory device to the second memory device using Then, the second system activation is executed based on the activation file expanded in the second memory device.

  With this configuration, when the operation is resumed, the remaining files can be expanded to the second memory device, and the startup time can be shortened by using the file expanded to the second memory device having a high reading speed. It is possible.

  The information terminal device according to the present invention further includes a processor (CPU) for operating the operation system, and when the total file size is larger than the free capacity, the file in the access history is read from the first memory device. The third expansion is expansion that expands within a range that can be accommodated in the second memory device, and the processor stores the files remaining in the first memory device in the third expansion after the third expansion. 2 to the memory device.

  With this configuration, files can be expanded from the first memory device to the second memory device as much as possible before receiving an instruction to restart the operation, and only the remaining files need to be expanded when the operation is restarted. It is possible to reduce the development processing time from the first memory device to the second memory device at the time.

  Further, in the information terminal device of the present invention, the expansion that the processor expands to the second memory device is a fourth expansion, and the fourth expansion is performed when the load of the processor is smaller than a predetermined load. Executed.

  With this configuration, the processing time required for the fourth expansion process is executed at a timing when the load on the processor is small, so that it can be executed while minimizing the influence on the system activation process.

  Further, in the information terminal device of the present invention, the fact that the load of the processor in the previous period is smaller than the predetermined load means that there is no load on the processor (idle).

  With this configuration, the processing time required for the fourth expansion process is executed at a timing when there is no load on the processor, and therefore can be executed without interfering with the system activation process.

  Further, in the information terminal device of the present invention, the expansion that the processor expands to the second memory device is a fourth expansion, and when the second system is started, the start-up file is transferred from the second memory device. Is read out, and the file expansion process in the fourth expansion is stopped when the reading process of the activation file catches up with the file expansion process in the fourth expansion.

  With this configuration, the unnecessary fourth expansion process can be stopped, and the system activation process can be prevented from being hindered.

  In the information terminal device of the present invention, after the third expansion, the file remaining in the first memory device in the third expansion includes a plurality of read sections divided into fixed size units, After the file expansion process in the fourth expansion is stopped, the file expansion process in the fourth expansion is resumed from the reading section next to the reading section in which the expansion processing is stopped.

  With this configuration, even when the file read process at the time of starting the second system catches up with the file information expanded in advance in the second memory device, the file pre-read process can be continuously executed. It is possible to shorten the startup time after the system startup.

  According to the information terminal device of the present invention, when the system is stopped, the startup time required for the next system startup is expanded in advance in a high-speed volatile memory, so that the startup time can be increased.

  In addition, even when all the startup files necessary for system startup cannot be expanded in volatile memory when the system is stopped, the remaining files are expanded in volatile memory in parallel with the second system startup process. Starting up can speed up the startup time.

The figure which shows the hardware constitutions of the information terminal device in embodiment of this invention The figure which shows the software structure of the information terminal device in embodiment of this invention The figure which shows an example of operation | movement of the information terminal device in embodiment of this invention The figure which shows an example of the access history in embodiment of this invention The figure which shows an example of operation | movement of the information terminal device in embodiment of this invention The figure which shows an example of the read-out area in embodiment of this invention The figure which shows an example of operation | movement of the information terminal device in embodiment of this invention

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a hardware configuration of an information terminal device according to the present invention.

  The information terminal device includes a processor (CPU 1), a first memory device 2, a second memory device 3, an operation instruction unit 4, and a display unit 5.

  Any CPU 1 can be used as long as the processing capability is sufficient.

  As the first memory device 2, a nonvolatile memory such as a NOR flash memory or a NAND flash memory can be used.

  The second memory device 3 can use a volatile memory such as SRAM or DRAM. It is also possible to use a nonvolatile memory such as FeRAM or MRAM. The second memory device 3 has a feature that the data read speed is higher than that of the first memory device 2.

  The operation instruction unit 4 has a function of receiving an instruction to stop and restart the operation of the information terminal device, and a power key corresponds to this in a portable terminal.

  The display unit 5 includes a liquid crystal display, an organic EL display, or the like.

  FIG. 2 is a diagram showing a software configuration of the information terminal device of the present invention.

  A program code 20 and data information 21 are stored in the first memory device 2. The program code 20 is various program data such as OS, application, middleware, and device driver. The data information 21 is various data such as an image, font, and parameter setting value.

  The second memory device 3 stores an OS 30, an access history holding unit 31, and file advance reading means 32.

  The OS 30 includes an interrupt control unit 300, a memory management unit 301, an OS management area 302, and a file system control unit 303.

  The interrupt control unit 300 detects an interrupt from the operation instruction unit 4 when receiving an instruction to stop and restart the operation of the information terminal device, and notifies the file advance reading means 32 of the interruption.

  The memory management unit 301 manages the OS management area 302, manages the area that the OS 30 can use for dynamic memory allocation, and manages free space.

  The OS management area 302 is a memory area managed by the memory management unit 301. When dynamic memory allocation is performed, necessary memory is secured from this area and used.

  The file system control unit 303 reads out the program code 20 and the data information 21 stored in the first memory device 2 and stores them in the OS management area 302, and the read file access order 401 and the file name 402 and the file size 403 are stored in the access history holding unit 31.

  An access history 310 is stored in the access history holding unit 31. The access history 310 holds the access order 401, the file name 402, and the file size 403 of the files developed by the file system control unit 303 from the first memory device 2 to the second memory device 3. Expansion means copying after copying or decompressing a compressed file. In addition, the file in the access history 310 that has been expanded is stored.

  The file advance reading means 32 receives the notification from the interrupt control unit 300 when the information terminal device is stopped or receives an instruction to resume the operation of the information terminal device, and the access history in the access history holding unit 31 Referring to 310, the file system control unit 303 is used to expand the necessary file to the second memory device 3.

  FIG. 3 shows an operation at the first system startup, which is the first system startup when the system is powered on.

  The process is started by the user operation by connecting the battery of the information terminal device or connecting the power cable (S3-1). First, initialization of hardware is executed (S3-2), and then the OS 30 stored in the first memory device 2 is expanded to the second memory device 3, and the startup process of the OS 30 is executed. (S3-3). Next, the file system control unit 303 expands the program code 20 and the data information 21 stored in the first memory device 2 in the OS management area 302 on the second memory device 3 (S3-4). At this time, the access order 401, the file name 402, and the file size 403 of the file expanded from the first memory device 2 to the second memory device 3 are generated as the access history 310 in the access history holding unit 31 (S3 -5) Start the system (S3-6).

  FIG. 4 shows details of the access history 310.

  The access history 310 includes an access order 401, a file name 402, and a file size 403.

  FIG. 5 shows the operation when the system is stopped.

  The process is started by pressing the power OFF key that is the operation instruction unit 4 by a user operation (S5-1). As a result, the system stop process is sequentially executed (S5-2). At this time, the interrupt control unit 300 detects that the power OFF key has been pressed, and notifies the file advance reading means 32 of it. After executing the system stop process, the file predecessor reading unit 32 reads the access history 310 and calculates the total of the file sizes 403 in the access history 310 (S5-3). Next, the file advance reading means 32 acquires the free capacity of the OS management area 302 from the memory management unit 301 and determines whether the free capacity is larger than the total file size 403 (S5-4). If the free space is larger than the total file size 403, all the files in the access history 310 are expanded from the first memory device 2 to the second memory device 3 (S5-5). If the free space is smaller than the total file size 403, the file in the access history 310 is expanded within the range that can be accommodated from the first memory device 2 to the second memory device 3 (S5-6). At this time, among the files in the access history 310, the files that are left unexpanded are divided by a certain size unit, and a plurality of read sections 601 are generated. As a result, even when data necessary for system startup does not fit in the second memory device, it is possible to shorten the startup time after the second system startup.

  Details of the read section 601 will be described later with reference to FIG. After performing the unfolding process, the process shifts to an operation stop mode (power saving mode) (S5-7). At this time, since the output to the display unit 5 stops, the user can recognize that the system is stopped.

  FIG. 6 shows an example of the read section 601.

  A file that has not been expanded during the system stop process is divided into a plurality of read sections 601 and managed in a certain size unit.

  FIG. 7 shows an operation when the system operation is resumed.

  The process is started by pressing the power ON key which is the operation instruction unit 4 by a user operation (S7-1). At this time, it is determined whether all the files in the access history 310 have been expanded (S7-2). When all the files have been expanded, the system activation process is executed as usual (S7-3), and the system activation process is terminated (S7-4).

  If all the files have not been expanded, the interrupt control unit 300 notifies the file advance reading means 32 and starts the operation of the file advance reading means 32 (S7-5). At this time, the OS 30 determines whether there is a task process to be executed next (S7-6).

  If there is a task process to be executed next, the process is executed as a system activation process (S7-7). Thereafter, it is determined whether or not the system activation is completed (S7-8). If the activation is terminated, the system activation is terminated (S7-4). If the system activation has not ended, it is determined again whether there is a task process to be executed next (S7-6).

  When there is no task process to be executed next, the file predecessor reading unit 32 uses the file system control unit 303 to expand the remaining files in the access history 310 (S7-9). As a result, the remaining files can be expanded in the second memory device 3, and the startup time can be shortened by using the files expanded in the second memory device 3 having a high reading speed. Is possible. Since only the remaining files need be expanded when the operation is resumed, it is possible to reduce the expansion process from the first memory device 2 to the second memory device 3 when the operation is resumed. Furthermore, since the expansion process is executed at a timing when the load on the CPU 1 is small or no load, it is possible to execute the expansion process while minimizing the influence on the system startup time.

  At this time, the file system control unit 303 determines whether the file to be expanded has already been expanded (S7-10). This is performed to determine whether the system activation process executed by the CPU 1 has caught up with the expansion process in the file advance reading means 32.

  If it has already been deployed, there is no need to newly deploy, so the deployment process for the current read section 601 in the access history 310 is stopped, and the deployment process is resumed from the next read section 601 (S7-11). As a result, unnecessary development processing can be stopped, and system activation processing can be prevented from being hindered. Further, even when the file reading process at the time of the second start-up catches up with the file information previously developed in the second memory device 3, the file pre-reading process can be continuously executed, and the second system It is possible to reduce the startup time after startup.

  If it has not been developed yet, the read section 601 is not updated, and it is determined again whether there is a task process to be executed next (S7-6).

  With the above configuration, after starting the first system, the system startup process is performed in a state where all the program code 20 and data information 21 of the first memory device 2 are expanded in the high-speed second memory device 3 in advance. Since it can be executed, it is possible to speed up the system startup process.

  The information terminal device according to the present invention can be used in various types of embedded devices such as various home appliances, in-vehicle devices, and communication devices including mobile phones.

1 CPU
2 First memory device 3 Second memory device 4 Operation instruction section 5 Display section 20 Program code 21 Data information 30 OS
31 Access History Holding Unit 32 File Advance Reading Unit 300 Interrupt Control Unit 301 Memory Management Unit 302 OS Management Area 303 File System Control Unit 310 Access History 401 Access Order 402 File Name 403 File Size 601 Read Section

Claims (12)

A first memory device storing a file for system startup;
A second memory device having a higher access speed than the first memory device;
An access history holding unit for holding an access history including a file name of a file developed from a first memory device to the second memory device;
An operation instruction unit that receives instructions for operation stop and operation resumption,
An information terminal device in which the system is activated based on the activation file on the second memory device,
At the time of system startup, a first expansion is performed that expands the startup file stored in the first memory device to the second memory device, and the access history holding unit stores the access history of the first expansion. Holding and executing the first system boot based on the boot file expanded in the second memory device,
When the operation instruction unit receives an operation stop instruction after starting the first system, the activation file is transferred from the first memory device to the second memory based on the access history of the access history holding unit. A second deployment to deploy to the device is performed, after which the information terminal device transitions to an operation stop mode,
In the operation stop mode, when the operation instruction unit receives an operation resumption instruction, the second system activation is executed based on the activation file expanded in the second memory device by the second expansion. Information terminal device. The information terminal device according to claim 1,
The system startup file is a plurality of files,
The access history is an information terminal device including the file names of the plurality of files and the order of the plurality of files. The information terminal device according to claim 1 or 2,
The first memory device is non-volatile;
The information terminal device, wherein the second memory device is volatile. The information terminal device according to any one of claims 1 to 3,
The information terminal device in which the stop instruction and the restart instruction are pressing of a power key. The information terminal device according to any one of claims 1 to 4,
With a display,
The operation stop mode is an information terminal device in which the display unit is in a stop state. The information terminal device according to any one of claims 1 to 5,
An operating system for managing free space in the memory space of the second memory device;
An application program included in the system and operating on the operating system,
The access history includes a file size of a file to be expanded on the second memory device,
In the second development,
When the total file size of the files in the access history held by the access history holding unit is calculated and the total file size is within the free space,
Expand all the files in the access history from the first memory device to the second memory device;
If the total file size is larger than the free space,
An information terminal device that expands a file in the access history as far as it can be accommodated from the first memory device to the second memory device. The information terminal device according to claim 6,
When the operation instruction unit receives an instruction to resume operation,
The operating system secures a free space in the memory space of the second memory device, and uses the reserved free space, so that the file in the access history is not expanded to the second memory device. A file remaining in the first memory device is expanded from the first memory device to the second memory device;
An information terminal device in which a second system activation is executed based on the activation file expanded in the second memory device. The information terminal device according to claim 6 or 7,
A processor on which the operation system operates;
When the total file size is larger than the free space, a third expansion is an expansion that expands a file in the access history within a range that fits from the first memory device to the second memory device.
An information terminal device in which, after the third expansion, the processor expands a file remaining in the first memory device in the third expansion to the second memory device. The information terminal device according to claim 8,
The expansion that the processor expands to the second memory device is referred to as a fourth expansion,
The information terminal apparatus that is executed when the load of the processor is smaller than a predetermined load. The information terminal device according to claim 9,
The load of the processor in the previous period is smaller than the predetermined load.
An information terminal device in which there is no processor load. The information terminal device according to claim 8 or 9, wherein
The expansion that the processor expands to the second memory device is referred to as a fourth expansion,
At the time of starting the second system, the boot file is read from the second memory device,
When the startup file read process has caught up with the file expansion process in the fourth expansion,
An information terminal device that stops a file expansion process in the fourth expansion. The information terminal device according to claim 11,
After the third expansion, the file remaining in the first memory device in the third expansion includes a plurality of read sections divided into fixed size units,
An information terminal device that, after stopping the file expansion process in the fourth expansion, resumes the file expansion process in the fourth expansion from the read section next to the read section in which the expansion process is stopped.

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