JP2011053852A - Portable terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a portable terminal capable of performing data relocation processing to a recording device in optimal timing. <P>SOLUTION: In a memory 35, an on-time when a power supply is turned on, an off-time when the power supply is turned off, and an amount of used data and an amount of deleted data at the on-time or the off time are successively recorded. When the power supply is turned off, based on the off-time and a plurality of the on-times and the off-times recorded in the memory 35, a succeeding on-time, an off-time ΔT, and a succeeding off-time are estimated. When the power supply is turned off, based on the amount of used data and the amount of deleted data matching the estimated succeeding on-time and those matching the estimated off-time, an amount of data planned to be used from the succeeding on-time to the succeeding off-time is estimated. At the turn-off of the power supply, when the off-time ΔT is a predetermined time ΔTo or longer, defragmentation processing is carried out on the memory 35 to secure only the estimated amount of data planned to be used. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a portable terminal that performs data rearrangement processing on a recording apparatus.

  Conventionally, portable data relocation processing for a recording device, that is, processing for deallocating data in a deleted state of the recording device to a unused state and relocating discontinuously recorded data to continuous data (defragmentation processing). As a technique relating to a terminal, a mobile phone with a camera with a built-in HDD as a recording apparatus shown in Patent Document 1 below is known. In this mobile phone, when automatic defragmentation is effective, the mobile phone body is connected (placed) to the cradle, is always supplied with power, and the fragmentation rate of the HDD (recording device) is above a certain level. If there is, it automatically performs defragmentation processing on the HDD.

JP 2005-242717 A

  By the way, the data rearrangement process with respect to the recording apparatus is difficult to be performed in parallel with other arithmetic processes because the processing load is high and the processing time is long for the CPU or the like executing this process. On the other hand, since the data rearrangement process is not performed, the unusable deleted data area increases and the unused data area decreases among the data areas of the recording apparatus. When it becomes slow, there is a problem that other arithmetic processing becomes slow. In particular, unlike a stationary terminal, a portable terminal has a limited capacity of a recording device in order to reduce the size and weight. Therefore, if data relocation processing is not performed, the access speed to the recording device tends to be slow.

  SUMMARY An advantage of some aspects of the invention is that it provides a portable terminal capable of performing data rearrangement processing on a recording apparatus at an optimal timing.

  In order to achieve the above object, the portable terminal according to claim 1 is a recording device in which acquired data is recorded, and includes an on time when the power is turned on and an off time when the power is turned off. Of the data recorded in the recording device at the on-time or off-time, a recording device in which used data amount in use state and deleted data amount in deletion state are sequentially recorded, and deletion state data of the recording device is not recorded A mobile terminal comprising a rearrangement unit capable of performing a rearrangement process in which the data recorded in a discontinuous manner is rearranged into continuous data, and when the power is turned off, Based on the plurality of ON times and OFF times recorded in the recording device, the next ON time, the OFF time from the power OFF to the next ON time, and the next ON time are displayed. First estimation means for estimating the time, and when the power is turned off, the plurality of used data amounts recorded in the recording device and the deletion corresponding to the next on time estimated by the first estimation means Based on a data amount and a plurality of used data amounts and deleted data amounts recorded in the recording device in correspondence with the next off time estimated by the first estimating means, the next on time Second estimation means for estimating the scheduled data amount to be used from the first time to the next off time, and the rearrangement means is turned off and the off time estimated by the first estimation means is estimated. Performing the rearrangement process on the recording apparatus so as to secure at least the scheduled use data amount estimated by the second estimation means when it is equal to or longer than a predetermined time. And butterflies.

  According to a second aspect of the present invention, in the mobile terminal according to the first aspect, when the relocation unit is turned off and the off time estimated by the first estimation unit is equal to or longer than the predetermined time, The rearrangement process is performed on the recording apparatus so as to secure only the scheduled use data amount estimated by the second estimation unit.

  According to a third aspect of the present invention, in the mobile terminal according to the first or second aspect, the relocation unit is powered off and the off time estimated by the first estimation unit is equal to or longer than the predetermined time. The rearrangement process is performed on the entire area of the recording apparatus, and when the off time is less than the predetermined time, the scheduled data amount is secured for the recording apparatus. The rearrangement process is performed.

  Invention of Claim 4 is provided with the determination means which determines whether the said portable terminal is a charge state in the portable terminal as described in any one of Claims 1-3, The said rearrangement means is further The relocation process is performed on the recording apparatus when the determination unit determines that the battery is in a charged state.

  According to a fifth aspect of the present invention, in the portable terminal according to the fourth aspect, the relocation means interrupts the relocation process when the determination means determines that the battery is not in a charged state during the reallocation process. It is characterized by doing.

  A sixth aspect of the present invention is the mobile terminal according to any one of the first to fifth aspects, wherein the rearrangement unit interrupts the rearrangement process when power is turned on during the rearrangement process. It is characterized by that.

  According to the first aspect of the present invention, the recording device sequentially records the on time when the power is turned on and the off time when the power is turned off, and the used data amount and the deleted data amount at the on time or the off time. When the power is turned off, the first estimation means estimates the next on time, the off time, and the next off time based on the off time and a plurality of on times and off times recorded in the recording device. Is done. Further, when the power is turned off, the second estimation means starts from the next on time based on the use data amount and the deletion data amount respectively corresponding to the next on time and the next off time estimated by the first estimation means. The amount of data scheduled to be used before the next off time is estimated. Then, when the power is turned off and the off time estimated by the first estimating means is equal to or longer than a predetermined time, the relocation means records so as to secure at least the scheduled data amount estimated by the second estimating means. A relocation process is performed on the device.

  In this way, when the power-off time is estimated, the off time is estimated, and when the off time is a predetermined time, for example, sufficient time for performing the rearrangement process, the amount of data scheduled to be used A relocation process (defragment process) is automatically performed on the recording apparatus so as to secure at least the above. Thereby, the data rearrangement process with respect to the recording apparatus can be automatically performed at the optimum timing in consideration of the actual work.

  According to a second aspect of the present invention, when the power is turned off and the off time estimated by the first estimating means is equal to or longer than a predetermined time, the recording is performed so as to secure only the scheduled data amount estimated by the second estimating means A relocation process is performed on the device. Thereby, since the rearrangement process is performed by the amount of data estimated to be necessary for the recording apparatus, it is possible to suppress a decrease in the life of the recording apparatus due to the frequent execution of the rearrangement process.

  In the invention of claim 3, when the power is turned off by the rearrangement means and the off time estimated by the first estimation means is equal to or longer than a predetermined time, the rearrangement process is performed on the entire area of the recording apparatus. If the off-time is less than the predetermined time, the rearrangement process is performed so as to ensure the amount of data scheduled to be used for the recording apparatus. Thereby, even if the off time is less than the predetermined time, the rearrangement process for securing the scheduled data amount can be performed.

  In the invention of claim 4, the rearrangement unit further performs the rearrangement process on the recording apparatus when the determination unit determines that the battery is in the charged state. It is possible to eliminate battery exhaustion.

  In the invention of claim 5, the relocation means interrupts the relocation process when the determination means determines that it is not in the charged state during the execution of the relocation process, so the battery resulting from the automatic execution of the relocation process. Cuts can be reliably eliminated.

  In the invention of claim 6, since the rearrangement means interrupts the rearrangement process when the power is turned on during the execution of the rearrangement process, an arithmetic process or the like according to a user instruction is executed immediately after the power is turned on. Even in this case, this process is not delayed due to the rearrangement process.

It is a block diagram which shows the electric constitution of the barcode reader 20 which concerns on 1st Embodiment. It is a flowchart which illustrates the flow of the optimization process in 1st Embodiment. It is explanatory drawing which shows the ON time and OFF time, the amount of used data, and the amount of deletion data recorded sequentially as a collection log in the memory 35. It is a timing chart which shows the ON / OFF state of the power source estimated at each time. FIG. 5A is a conceptual diagram illustrating the estimated use data amount and deletion data amount at the next on-time, and FIG. 5B is an estimated use data amount and deletion at the next off time. It is a conceptual diagram which illustrates data amount. It is a part of flowchart which illustrates the flow of the optimization process in 2nd Embodiment. It is a part of flowchart which illustrates the flow of the optimization process in 2nd Embodiment.

[First Embodiment]
Hereinafter, a first embodiment in which a portable terminal of the present invention is applied to a barcode reader will be described with reference to the drawings.
As shown in FIG. 1, the barcode reader 20 mainly includes an optical system such as an illumination light source 21, a light receiving sensor 28, and an imaging lens 27, a memory 35, a control circuit 40, an operation switch 42, a liquid crystal display 46, and the like. And a power source system such as a power switch 41 and a battery 49. These are mounted on a printed wiring board (not shown) or housed in a housing (not shown).

  The optical illumination light source 21 functions as an illumination light source capable of emitting illumination light Lf, and includes, for example, a red LED and a diffusing lens, a condensing lens, and the like provided on the emission side of the LED. . In the first embodiment, illumination light sources 21 are provided on both sides of the light receiving sensor 28, and configured to irradiate the illumination light Lf toward the reading object R through a reading port of a housing (not shown). ing. This reading object R corresponds to a display medium such as a packaging container, packaging paper, or label, for example, and a barcode B is printed on the surface thereof.

  The light receiving sensor 28 is configured to receive the reflected light Lr irradiated and reflected on the reading object R or the barcode B. For example, the light receiving sensor 28 is a primary element such as a C-MOS or CCD. A line sensor originally arranged or an area sensor arranged two-dimensionally corresponds to this. The light receiving sensor 28 is mounted on a printed wiring board (not shown) so that incident light incident through the imaging lens 27 can be received by the light receiving surface 28a.

  The imaging lens 27 functions as an imaging optical system capable of condensing incident light incident from the outside through the reading port and forming an image on the light receiving surface 28 a of the light receiving sensor 28. In the first embodiment, the illumination light Lf emitted from the illumination light source 21 is reflected by the barcode B and condensed by the reflected light Lr incident on the reading port, whereby the barcode is applied to the light receiving surface 28a of the light receiving sensor 28. The code image of B can be imaged.

  Next, a configuration outline of the microcomputer system will be described. The microcomputer system includes an amplification circuit 31, an A / D conversion circuit 33, a memory 35, an address generation circuit 36, a synchronization signal generation circuit 38, a control circuit 40, an operation switch 42, an LED 43, a buzzer 44, a liquid crystal display 46, and a communication interface 48. Etc. As the name suggests, this microcomputer system is composed mainly of a control circuit 40 and a memory 35 that can function as a microcomputer (information processing device). The image signal of the barcode B imaged by the optical system described above is obtained. It can perform signal processing in terms of hardware and software.

  The image signal (analog signal) output from the light receiving sensor 28 of the optical system is amplified by a predetermined gain by being input to the amplifier circuit 31, and then input from the analog signal when input to the A / D conversion circuit 33. Converted into a digital signal. When the digitized image signal, that is, image data (image information) is input to the memory 35, it is stored in the image data storage area. The synchronization signal generation circuit 38 is configured to generate a synchronization signal for the light receiving sensor 28 and the address generation circuit 36, and the address generation circuit 36 is based on the synchronization signal supplied from the synchronization signal generation circuit 38. Thus, the storage address of the image data stored in the memory 35 can be generated.

  The memory 35 is a semiconductor memory device, for example, a rewritable memory such as a flash ROM (EPROM, EEPROM, etc.). In addition to the image data storage area described above, the memory 35 is configured to be able to secure a work area and a reading condition table used by the control circuit 40 for each processing such as arithmetic operation and logical operation, as well as an optimum described later. In addition, a predetermined program that can execute the conversion process, the reading process, and the like, and a system program that can control each hardware such as the illumination light source 21 and the light receiving sensor 28 are stored in advance. The memory 35 corresponds to an example of a “recording device” described in the claims.

  The control circuit 40 is a microcomputer that can control the entire barcode reader 20 and includes a CPU, a system bus, an input / output interface, and the like. The control circuit 40 can constitute an information processing apparatus together with the memory 35 and has an information processing function. The control circuit 40 is configured to be connectable to various input / output devices (peripheral devices) via a built-in input / output interface. In the case of the first embodiment, the power switch 41, the operation switch 42, An LED 43, a buzzer 44, a liquid crystal display 46, a communication interface 48, and the like are connected.

  Thereby, for example, monitoring and management of the power switch 41 and the operation switch 42, turning on / off the LED 43 functioning as an indicator, turning on / off the buzzer 44 capable of generating a beep sound and an alarm sound, and further reading the barcode Screen control of the liquid crystal display 46 capable of displaying the code content by B, communication control of the communication interface 48 enabling serial communication with an external device, and the like are enabled.

  The power supply system includes a power switch 41, a battery 49, and the like. When the power switch 41 managed by the control circuit 40 is turned on and off, the conduction of the drive voltage supplied from the battery 49 to each device and each circuit described above is established. Or shut off is controlled. The battery 49 is a secondary battery that can be charged by being electrically connected to a charging device (not shown). The battery 49 is provided with a charge sensor 50 that detects whether or not the battery 49 is in a charged state. Yes. The charge sensor 50 is connected to the control circuit 40 so that the detection result can be output.

  By configuring the barcode reader 20 in this way, the following reading process is performed. For example, when the power switch 41 is turned on and a predetermined self-diagnosis process or the like is normally completed and the barcode B can be read, an operation switch 42 (for example, a trigger switch) that instructs to emit the illumination light Lf is input. Accept. As a result, when the operator presses the trigger switch to turn it on, the control circuit 40 outputs a light emission signal to the illumination light source 21 based on the synchronization signal, so that the illumination light source 21 that has received the light emission signal turns on the LED. Light is emitted to irradiate illumination light Lf.

  Then, since the illumination light Lf irradiated to the barcode B is reflected and the reflected light Lr enters the imaging lens 27 through the reading port, a bar is formed on the light receiving surface 28a of the light receiving sensor 28 by the imaging lens 27. An image of code B, that is, a code image is formed. Thereby, each light receiving element which comprises the light-receiving surface 28a is exposed, and the signal according to the light reception amount is output from each light receiving element, respectively. The signal output from each light receiving element constitutes the image data of the barcode B. The image data is binarized and then encoded as the barcode B by performing a predetermined decoding process. Character data or the like is decoded and written into the memory 35. The decoded contents can be displayed on the liquid crystal display 46 or output to the host computer via the communication interface 48.

Next, a data optimization process for the memory 35 executed by the control circuit 40, which is a characteristic part of the present invention, will be described. This optimization process is a process of rearranging data (files) to the memory 35, that is, a process of placing data in a deleted state in the memory 35 in an unused state and rearranging discontinuously recorded data into continuous data. (Hereinafter also referred to as defragmentation processing) is performed at an optimal timing.
Hereinafter, the optimization process will be described in detail with reference to the flowchart of FIG.

  First, when the power switch 41 is turned on and the power is turned on, an on-state recording process is performed in step S101 in FIG. In this processing, the current time is recorded in the memory 35 as the time when the power is turned on (hereinafter referred to as the “on time”), and the use state cluster in which data exists among the data recorded in the memory 35 at the on time. And the number of clusters in a deleted state from which data has been deleted (hereinafter referred to as deleted data amount) are recorded. Specifically, for example, as in the uppermost data of the collection log shown in FIG. 3, the ON time (ON) is “08: 0”, the used data amount (USE) is “200”, and the deleted data amount (DEL) ) Is recorded in the memory 35 as “50”.

  When the power is turned on in this way, the reading process as described above is performed, the decoding result or the like is recorded in the memory 35, and the predetermined calculation process or the like is performed, whereby the usage data recorded in the memory 35 is recorded. The amount and amount of deleted data vary.

  When the operator who has finished the reading operation or the like turns off the power switch 41 (Yes in S103), an off state recording process is performed in step S105. In this process, the current time is recorded in the memory 35 as the time when the power is turned off (hereinafter referred to as the “off time”), and the used data amount and the deleted data amount among the data recorded in the memory 35 at the off time. Are recorded. Specifically, for example, as in the second stage data of the collection log shown in FIG. 3, the off time (OFF) is “10:00”, the used data amount (USE) is “300”, and the deleted data amount ( DEL) is recorded in the memory 35 as “100”.

  By performing the on-state recording process and the off-state recording process as described above every time the power is turned on / off, as shown in FIG. 3, the on time and the off time, and the used data amount and the deleted data amount at the on time or the off time, as shown in FIG. Are sequentially recorded in the memory 35 as a collection log.

  Next, in step S107, a first estimation process is performed. In this process, first, the on / off state of the power supply at each time is estimated from a plurality of on-times and off-times sequentially recorded in the memory 35 so far as illustrated in the timing chart of FIG. Then, based on the estimated on / off state and the off time recorded in step S105, the next on time, and the off time ΔT that is the time from the off time (corresponding to the current time) to the next on time, The next off time is estimated.

Specifically, for example, when the power is turned off at time T _2, as shown in FIG. 4, the time T ₄ is estimated as the next on-time, the time from time T _2, to the time T ₄ is estimated as an off-time ΔT , time T ₆ is estimated as the next off time. Also, for example, if the power is turned off at time T ₁ , time T ₄ , and time T ₅ , it is estimated that the job is in progress and a sufficient off time cannot be expected, so the off time ΔT is set to 0 (zero). Is done. The control circuit 40 that executes step S107 corresponds to an example of “first estimation means” recited in the claims.

  As described above, when the next on time, the off time ΔT, and the next off time are estimated, a second estimation process is performed in step S109. In this process, the data is used from the next on time to the next off time based on the used data amount and the deleted data amount at the next on time and the used data amount and the deleted data amount at the next off time. The amount of data scheduled to be used is estimated.

Specifically, for example, when the next on-time is estimated to be time T ₀ and the next off-time is estimated to be time T ₂ , a plurality of use data amounts and deletion data sequentially recorded corresponding to each on-time Of the amounts, the average value of the used data amount and the average value of the deleted data amount recorded corresponding to the time close to the next on-time (time T ₀ ) are exemplified in FIG. Then, the amount of used data (Dau in FIG. 5A) and the amount of deleted data (Dad in FIG. 5A) at the next ON time are estimated.

Then, among the plurality of use data amounts and deletion data amounts that are sequentially recorded corresponding to each off time, the use data amount recorded corresponding to a time close to the next off time (time T ₂ ). As shown in FIG. 5B, the amount of used data (Dbu in FIG. 5B) and the amount of deleted data (FIG. Dbd) in B) is estimated. 5A and 5B conceptually illustrate the state of one sector of the file area in each stage, and areas other than the used data amount and the deleted data amount are unused. Indicates the area.

  Then, the difference between the use data amount and the deletion data amount at the next on time estimated as described above, and the use data amount and the deletion data amount at the next off time, specifically, the thick data in FIG. As shown by the area in the frame, the scheduled data amount is estimated based on the data amount in which the unused state is in the used state and the data amount in which the used state is in the deleted state. The control circuit 40 that executes Step S109 corresponds to an example of “second estimation means” recited in the claims.

  When the scheduled data amount is estimated as described above, it is determined in step S111 whether or not the off time ΔT is equal to or longer than the predetermined work time ΔTo. The predetermined work time ΔTo is, for example, a work time sufficient for performing a defragmentation process to be described later, and is set to 1 hour in the first embodiment. The work time ΔTo corresponds to an example of “predetermined time” described in the claims.

Here, for example, when the off time ΔT is short because the off time is the time T ₃ , or the off time ΔT is 0 (zero) because the off time is the time T ₁ , the time T ₄ , and the time T _5. In the case where the off time ΔT is less than the predetermined time ΔTo, it is determined No in step S111. As a result, it is determined that a sufficient off time for performing the defragmentation process cannot be secured, and the power off process is performed in step S125 without performing the defragmentation process, so that the power supply is turned off.

On the other hand, when the off time is, for example, time T ₆ or time T ₇ , the off time ΔT becomes longer, and when the off time ΔT becomes equal to or longer than the predetermined time ΔTo (Yes in S111), the charging state is determined in step S113. It is determined whether or not. Here, if it is determined that the battery is not in the charged state according to the detection result of the charge sensor 50 (No in S113), the step without performing the defragmentation process is performed without the defragmentation process in order to eliminate the battery exhaustion caused by the automatic execution of the defragmentation process. In S125, a power-off process is performed, and the power is turned off. The control circuit 40 that executes step S113 and step S117 described later corresponds to an example of “determination unit” recited in the claims.

  On the other hand, if it is determined in step S113 that the battery is in a charged state according to the detection result of the charge sensor 50 (Yes in S113), a defragmentation process is performed in step S115. In this process, in order to secure only the estimated use data amount estimated in step S109, the data in the deleted state of the memory 35 is set to an unused state and the data recorded discontinuously is continuous data. Will be rearranged. The control circuit 40 that executes step S115 corresponds to an example of a “rearrangement unit” recited in the claims.

  Subsequently, in step S117, it is determined whether or not the battery is charged. If the battery is charged (Yes in S117), it is determined whether or not the power is turned on in step S119, and the power switch 41 is turned on. It is determined as No. If the scheduled use data amount is not secured and the defragmentation process is not completed, it is determined No in step S121, and the process from step S115 is repeated.

  If the charging is stopped while the defragmentation process is being performed by this repetition process (No in S117) or the power switch 41 is turned on (Yes in S119), the defragmentation process is interrupted in Step S123. In step S125, the power is turned off and the power is turned off. Further, when the defragmentation process is completed when the scheduled use data amount is secured (Yes in S121), the power-off process is performed in step S125, and the power supply is turned off. Then, when the power is turned off in this way, the optimization process ends. If there is already an unused data amount corresponding to the estimated usage data amount estimated in step S109, it is determined Yes in step S121 without continuously executing the defragmentation process. It will be.

  As described above, in the barcode reader 20 according to the first embodiment, the memory 35 stores the on time when the power is turned on and the off time when the power is turned off, the amount of used data at the on time or the off time, and The amount of deleted data is recorded sequentially. When the power is turned off, the next on time, off time ΔT, and next off time are estimated based on the off time and a plurality of on times and off times recorded in the memory 35. Also, when the power is turned off, based on the estimated amount of use and deleted data corresponding to the next turn-on time and the next turn-off time, the scheduled use will be used from the next turn-on time to the next turn-off time. The amount of data is estimated. Then, when the power is turned off and the off time ΔT is equal to or longer than the predetermined time ΔTo, a defragmentation process is performed on the memory 35 so as to ensure only the estimated use planned data amount.

  In this way, the off time ΔT is estimated according to the time when the power is turned off, and when the off time ΔT is equal to or longer than the predetermined time ΔTo set as described above, only the scheduled data amount is secured. As described above, the defragmentation process is automatically performed on the memory 35. Thereby, the defragmentation process of the data with respect to the memory 35 can be automatically performed at the optimum timing in consideration of the actual work.

In particular, since the defragmentation process is performed so as to ensure only the amount of data scheduled to be used that is estimated to be necessary for the memory 35, it is possible to suppress a decrease in the lifetime of the memory 35 due to the frequent execution of the defragmentation process. Can do.
In the case where no emphasis is placed on the life of the memory 35, when the power is turned off and the off time ΔT is equal to or longer than the predetermined time ΔTo, the memory 35 is secured so as to secure at least the estimated scheduled data amount to be used. On the other hand, defragmentation processing may be performed.

  Further, in the barcode reader 20 according to the first embodiment, the defragmentation process is performed on the memory 35 when it is determined in step S113 that the battery is in the charged state, which results from the automatic execution of the defragmentation process. It is possible to eliminate battery exhaustion.

  Furthermore, in the barcode reader 20 according to the first embodiment, when it is determined that the battery is not in the charged state in step S117 during the defragmentation process, the defragmentation process is interrupted, resulting in the automatic execution of the defragmentation process. It is possible to reliably eliminate the battery exhaustion.

  Further, in the barcode reader 20 according to the first embodiment, when the power is turned on during the defragmentation process, the defragmentation process is interrupted, so that an arithmetic process or the like according to a user instruction is executed immediately after the power is turned on. Even in this case, this process is not delayed due to the defragmentation process.

[Second Embodiment]
Next, a second embodiment in which the portable terminal of the present invention is applied to a barcode reader will be described with reference to the drawings.
In the barcode reader 20 according to the second embodiment, the above-described optimization processing is performed based on the flowcharts shown in FIGS. 6 and 7 instead of the flowchart shown in FIG. Different from the barcode reader according to the form. Therefore, substantially the same components as those of the barcode reader of the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

Hereinafter, optimization processing by the control circuit 40 according to the second embodiment will be described with reference to the flowcharts of FIGS. 6 and 7.
First, when the power switch 41 is turned on and the power is turned on, it is determined whether or not the flag F is set to 0 in step S201 in FIG. Here, the flag F indicates a state related to the execution of the defragmentation process. Specifically, F = 0 means a normal process state in which the defragmentation process is not performed, and F = 1 or F = 2 indicates the defragmentation after the automatic activation. It means the processing state to execute processing. Since it is a normal processing state in which the defragmentation process is not automatically executed, if F = 0 is set as will be described later, it is determined Yes in step S201.

  Next, in step S203, an on-state recording process is performed in the same manner as in step S101. When an operator who has finished the reading operation or the like turns off the power switch 41 (Yes in S205), in step S207, the above step S105 is performed. The off-state recording process is performed in the same manner as described above. Subsequently, in step S209, the first estimation process is performed in the same manner as in step S107, and the next on time, the off time ΔT, and the next off time are estimated. In step S211, the second estimation process is performed in the same manner as in step S109, and the scheduled data amount is estimated.

  Next, in step S213, work time estimation processing is performed. In this process, the work time ΔTa for performing the defragmentation process to secure the necessary data amount obtained by subtracting the current unused data amount from the scheduled use data amount estimated in step S211, and all data The work time ΔTb when the defragmentation process is performed on the area is estimated. The work times ΔTa and ΔTb correspond to an example of “predetermined time” recited in the claims.

  In the second embodiment, the work time ΔTa is set to one sector when the unused data amount obtained by erasing all sectors in which one sector is a deletion cluster exceeds the necessary data amount. It is set to the work time when all sectors that are all deleted clusters are erased. In order to erase a deleted cluster in which a used cluster and a deleted cluster coexist in one sector, it is better to copy a used cluster to another sector and then erase the sector. This is because the working time is shortened. On the other hand, if the unused data amount obtained by erasing all sectors in which one sector is a deletion cluster does not exceed the required data amount, the working time ΔTa indicates that the used cluster and the deletion cluster exist in one sector. It is set to the working time when deleting the deletion cluster of all sectors including the mixed cluster.

  In step S215, it is determined whether or not the off time ΔT estimated in step S209 is equal to or longer than the work time ΔTa. Here, when the defragmentation process is not performed because the off time ΔT is short (No in S215), the flag is set to 0 in step S217, and the power off process is performed in the same manner as in the above step S125. Turns off.

  On the other hand, when the off time ΔT is equal to or longer than the work time ΔTa (Yes in S215), it is determined in step S219 whether the off time ΔT is equal to or longer than the work time ΔTb. Here, when the off time ΔT is equal to or longer than the work time ΔTb and the work time for performing the defragmentation process on all the data areas is sufficient (Yes in S219), the flag F is automatically activated in step S221. F = 2, which means a processing state in which defragmentation processing is executed later on all data areas, is set. On the other hand, when the off time ΔT is less than the work time ΔTb and sufficient work time for performing the defragmentation process on all the data areas cannot be obtained, but the work time for performing the defragmentation process to secure the necessary data amount can be obtained. (No in S219), in step S223, the flag F is set to F = 1 which means a processing state in which a defragmentation process for securing a necessary data amount after automatic activation is executed.

  When the flag F is set to F = 1 or F = 2 as described above, an automatic activation process is performed in step S225, and a process of automatically starting 5 minutes after the power is turned off is performed. In step S227, the power is turned off and the power is turned off.

  When such an automatic startup process is performed and the power is turned on, the flag F is set to F = 1 or F = 2, so that it is determined No in step S201, and FIG. In step S229, it is determined whether or not the battery is in the charged state, similar to step S113. If the battery is not charged (No in S229), a power-off process is performed in step S227 and the power is turned off.

  On the other hand, if the battery is in the charged state in step S229 (Yes in S229), it is determined in step S231 whether or not the flag F = 1 is set. Here, since it is estimated that a sufficient work time for performing the defragmentation process for all the data areas cannot be taken but a work time for performing the defragmentation process for securing the necessary data amount can be taken, the flag F = 1 is set. If it is set (Yes in S231), the partial area defragmentation process is performed in step S233. In this process, a defragmentation process for securing the necessary data amount estimated in step S211 is performed.

  On the other hand, since it is estimated that the work time for performing the defragmentation process on the entire data area is sufficient, if F = 2 is set (No in S231), the entire area defragmentation process is performed in Step S235. Is made. In this processing, defragmentation processing is performed on all data areas.

  When the defragmentation process is performed in step S233 or step S235, the same determination process as in steps S117, S119, and S121 is performed in steps S237, S239, and S241. If it is determined that the defragmentation process is completed (Yes in S241) or if the defragmentation interrupt process is performed in Step S243, the power supply is turned off in Step S227 and the power supply is turned off. Ends.

  As described above, in the barcode reader 20 according to the second embodiment, the two work times ΔTa and ΔTb are estimated based on the scheduled use data amount (required data amount). When the power is turned off and the off time ΔT estimated in step S209 is equal to or longer than the work time ΔTb, the defragmenting process is performed on the entire area of the memory 35, and the off time ΔT is equal to or longer than the work time ΔTa. When the work time is less than ΔTb, the defragmentation process is performed so as to secure the scheduled data amount (necessary data amount) for the memory 35. Thereby, even if the off time ΔT is less than the work time ΔTb, the defragmentation process for securing the scheduled use data amount (required data amount) can be performed.

The present invention is not limited to the above embodiments, and may be embodied as follows. Even in this case, the same operations and effects as those of the above embodiments can be obtained.
(1) In step S113, the battery remaining amount of the battery 49 is detected not only when the defragmentation process is performed based on the detection result by the charging sensor 50, but the remaining battery amount is equal to or greater than a certain value. In some cases, defragmentation processing may be performed. Similarly, in steps S117, S229, and S237, the defragmentation process may be performed based on the remaining battery level.

(2) In the above embodiment, an example in which the mobile terminal of the present invention is applied to the barcode reader 20 has been described. However, the present invention is not limited to this. For example, a two-dimensional code reader or a wireless tag capable of reading a two-dimensional code is used. The present invention may be applied to an information reading apparatus that acquires information from the outside and records it in a memory or the like, such as a wireless tag reader capable of reading the information.

20 ... Bar code reader (mobile terminal)
35 ... Memory (recording device)
40 ... control circuit 41 ... power switch 49 ... battery 50 ... charging sensor T ₀ through T 7 _... time [Delta] T ... off time .DELTA.Ta, .DELTA.Tb, .DELTA.To ... working time (predetermined time)

Claims (6)

A recording device in which acquired data is recorded, which is on-use time when power is turned on, off time when power is turned off, and usage data in use state among data recorded on the recording device at these on-time or off-time A recording device for sequentially recording the amount and the amount of deleted data in the deleted state;
Relocation means capable of performing a relocation process for relocating discontinuously recorded data to continuous data while making the data in the deleted state of the recording device unused; and
A mobile terminal comprising:
When the power is turned off, based on the off time and the plurality of on times and off times recorded in the recording device, the next on time, the off time from the power off to the next on time, and the next time First estimation means for estimating the off time of
When the power is turned off, a plurality of used data amounts and deleted data amounts recorded in the recording device corresponding to the next on time estimated by the first estimating unit, and estimated by the first estimating unit Used from the next on-time to the next off-time based on the plurality of used data amounts and the deleted data amounts recorded in the recording device corresponding to the next off-time A second estimating means for estimating the amount of data scheduled to be used;
With
The rearrangement unit secures at least the scheduled data amount estimated by the second estimation unit when the power is turned off and the off time estimated by the first estimation unit is equal to or longer than a predetermined time. As described above, a mobile terminal that performs the rearrangement process on the recording apparatus.   The rearrangement means secures only the scheduled use data amount estimated by the second estimation means when the power is turned off and the off time estimated by the first estimation means is equal to or longer than the predetermined time. The mobile terminal according to claim 1, wherein the rearrangement process is performed on the recording apparatus.   The rearrangement unit performs the rearrangement process on the entire area of the recording apparatus when the power is turned off and the off time estimated by the first estimation unit is equal to or longer than the predetermined time. 3. The relocation processing is performed according to claim 1, wherein when the off-time is less than the predetermined time, the rearrangement process is performed so as to ensure the amount of data to be used for the recording apparatus. Mobile devices. Determination means for determining whether or not the mobile terminal is in a charged state;
The said rearrangement means further implements the said rearrangement process with respect to the said recording apparatus, when it determines with a charging state being determined by the said determination means. The portable terminal as described in.   The mobile terminal according to claim 4, wherein the rearrangement unit interrupts the rearrangement process when the determination unit determines that it is not in a charged state during the execution of the rearrangement process.   The mobile terminal according to claim 1, wherein the rearrangement unit interrupts the rearrangement process when the power is turned on during the rearrangement process.

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