JP2017167881A - Storage device, storage method, and storage program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device, a method and a program which prevent omission of data and store data while suppressing electric power consumption even if power failure occurs.SOLUTION: A storage device comprises: a first storage part; a second storage part which works at less electric power consumption and stores data including at least one of image data and voice data; a transfer part which transfers data stored by the second storage part at faster speed; a battery charged by a commercial power supply; a power supply monitoring part which outputs a power source disconnection signal when detection is made that a voltage of the commercial power supply is a predetermined value or less; and a connection setting part which sets either a first connection setting in which each of the first storage part, the second storage part and the transfer part is connected to the battery, or a second connection setting in which the second storage part is connected to the battery, and the first storage part and the transfer part are not connected to the battery. The connection setting part sets to the first connection setting until the power supply monitoring part outputs the power source disconnection signal, and switches to the second connection setting when the power source disconnection signal is output.SELECTED DRAWING: Figure 5

Description

  The present invention is a storage device, a storage method, and a storage program that store, for example, image data, audio data, and the like.

  Patent Document 1 discloses a recording apparatus that switches the power source to an auxiliary battery and switches the recording medium of AV (Audio Visual) data to one with low power consumption in the event of a power failure. That is, in the invention described in Patent Document 1, in a normal state until a power failure occurs, recording is performed using a commercial power source, and AV data is stored in an HDD (Hard Disk Drive). In the recording device described in Patent Document 1, in the event of a power failure, the power source is switched from a commercial power source to an auxiliary battery, and then the connection is switched from the HDD to a flash memory that consumes less power than the HDD. Is stored in the flash memory. In addition, techniques related to the present invention are disclosed in Patent Documents 2-5.

JP 2015-76730 A JP 2008-141636 A JP 2005-302226 A Japanese Patent Laying-Open No. 2005-044432 JP-A-5-53931

  However, in the invention described in Patent Document 1, since the power source is switched from the commercial power source to the auxiliary battery when a power failure occurs, an instantaneous interruption of the power source occurs. As a result, AV data stored in a recording medium such as an HDD or a flash memory may be lost.

  A storage device according to the present invention operates with a first storage unit that stores transfer data, power consumption less than that of the first storage unit, and image data and audio data that are faster than the first storage unit. A second storage unit that stores acquisition data including at least one of the following, a transfer unit that transfers the acquisition data stored in the second storage unit as transfer data, and a commercial power source supplied from a predetermined power source, A battery that outputs power, a power monitoring unit that outputs a power-off signal when it is detected that the voltage of the commercial power source is a predetermined value or less, a first storage unit, a second storage unit, and a transfer unit; 1st connection setting which connects each of these to a battery, 2nd memory | storage part is connected to a battery, and the 1st memory | storage part and the transfer part 2nd connection setting which does not connect to a battery is set A power supply monitoring unit. Until the power-off signal is output, the connection setting unit sets the first connection setting. When the power supply monitoring unit outputs the power-off signal, the connection setting unit switches from the first connection setting to the second connection setting. Switch.

  A storage method according to the present invention operates with a first storage unit that stores transfer data, and with less power consumption than the first storage unit, and between image data and audio data at a faster speed than the first storage unit. Charged by a second storage unit that stores acquisition data including at least one, a transfer unit that transfers the acquisition data stored in the second storage unit as the transfer data, and a commercial power source supplied from a predetermined power source And a battery that outputs a power source, wherein the first storage unit, the second storage unit, and the transfer unit are each connected to the battery. A first connection step for setting connection, and when the voltage of the commercial power source is equal to or lower than a predetermined value, the second storage unit is connected to the battery from the first connection setting, and the first storage And the transfer unit Includes a second connecting step of switching to the second connection setup is not connected to the battery, the.

  A storage program according to the present invention operates with a first storage unit that stores transfer data, power consumption less than that of the first storage unit, and between image data and audio data at a faster speed than the first storage unit. A second storage unit that stores acquisition data including at least one, a transfer unit that transfers the acquisition data stored in the second storage unit as transfer data, and a commercial power source supplied from a predetermined power source, A first storage unit configured to set a first storage unit, a second storage unit, and a transfer unit to a first connection setting for connecting to the battery. When the connection step and the voltage of the commercial power source are equal to or lower than a predetermined value, the second storage unit is connected to the battery and the first storage unit and the transfer unit are not connected to the battery from the first connection setting. Switch to the connection setting Causing a second connecting step, the process including the computer.

The present invention provides a storage device or the like that stores data while suppressing power consumption and preventing data loss even when a power failure occurs.

It is a block diagram which shows the structure of the memory | storage device in the 1st Embodiment of this invention. It is a figure which shows the operation | movement flow of the memory | storage device in the 1st Embodiment of this invention. It is a figure which shows the operation | movement flow of the memory | storage device in the 1st Embodiment of this invention. It is a figure which shows the operation | movement flow of the memory | storage device in the 1st Embodiment of this invention. It is a block diagram which shows the structure of the memory | storage device in the 2nd Embodiment of this invention. It is a figure which shows the operation | movement flow of the memory | storage device in the 2nd Embodiment of this invention.

(First embodiment)
The storage device 10 according to the first embodiment will be described with reference to FIG. FIG. 1 is a block diagram illustrating a configuration of the storage device 10. For example, the storage device 10 is a recording device.

  The storage device 10 includes a power supply unit 20, a power supply unit 25, a storage device 30, an SDRAM (Synchronous Dynamic Random Access Memory) 35, a recording monitoring unit 40, a data acquisition unit 45, an AV input / output unit 50, The external peripheral input / output unit 55 and the control unit 60 are provided. The power supply unit 25 includes a power supply monitoring unit 26, a connection setting unit 27, and a battery 28. The storage device 30 includes a first storage unit 31, a second storage unit 32, and a transfer unit 33.

  The power supply unit 20 is connected to the power supply unit 25. The power supply unit 20 receives an input of commercial power. The commercial power source refers to electric power delivered from an electric power company or the like to an electric power consumer. The power supply unit 20 supplies commercial power to the battery 28. Specifically, the power supply unit 20 converts the input commercial power into a predetermined voltage and outputs it to the battery 28. Thereby, the battery 28 is charged.

  The power supply unit 25 is connected to the power supply unit 20. When the connection setting unit 27 sets a second connection setting to be described later, the power supply unit 25 controls the second storage unit 32, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, and the control. Connected to the unit 60.

  When the power monitoring unit 26 detects that the voltage of the commercial power source is equal to or lower than a predetermined value, the power monitoring unit 26 outputs a power cut signal to the connection setting unit 27 and the recording monitoring unit 40. On the other hand, the power supply monitoring unit 26 may output a power-off signal to the connection setting unit 27 and the control unit 60 when detecting that the voltage of the commercial power supply is not more than a predetermined value. Furthermore, the power supply monitoring unit 26 outputs a power-on signal to the connection setting unit 27 and the recording monitoring unit 40 when detecting that the voltage of the commercial power supply exceeds a predetermined value. On the other hand, the power supply monitoring unit 26 may output a power-on signal to the connection setting unit 27 and the control unit 60 when detecting that the voltage of the commercial power supply exceeds a predetermined value. The power supply monitoring unit 26 constantly monitors the voltage of the commercial power supply output from the power supply unit 20 to the power supply unit 25, for example. Thereby, the power supply monitoring unit 26 always detects whether the voltage of the commercial power supply is higher than a predetermined value or lower than a predetermined value. For example, when a power failure occurs, the value of the commercial power supply voltage is zero. Further, the power supply unit 26 may monitor the power of the commercial power supply. In this case, the power supply monitoring unit 26 always detects whether the power of the commercial power supply exceeds a predetermined value or less than a predetermined value.

  The connection setting unit 27 sets either the first connection setting or the second connection setting. The first connection setting is a setting for connecting each of the first storage unit 31, the second storage unit 32, and the transfer unit 33 to the battery 28. The second connection setting is a setting in which the second storage unit 32 is connected to the battery 28 and the first storage unit 31 and the transfer unit 33 are not connected to the battery 28. In addition, the connection setting unit 27 sets the first connection setting until the power monitoring unit 26 outputs a power-off signal. Further, the connection setting unit 27 switches from the first connection setting to the second connection setting when the power monitoring unit 26 outputs a power-off signal. Furthermore, when the power-on signal is input, the connection setting unit 27 switches from the second connection setting to the first connection setting. In the example of FIG. 1, the first connection setting includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, and the AV. In this setting, the battery 28 is connected to the input / output unit 50, the external peripheral input / output unit 55, and the control unit 60. The second connection setting is a setting for connecting the battery 28 to the second storage unit 32, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, and the control unit 60. The connection setting unit 27 may include a plurality of power shut-off switches (not shown). In this case, each of the power shut-off switches includes a first storage unit 31, a second storage unit 32, a transfer unit 33, an SDRAM 35, a recording monitoring unit 40, a data acquisition unit 45, an AV input / output unit 50, and an external peripheral. It is provided for each input / output unit 55 and control unit 60. In addition, each of the power shut-off switches is provided so that it can be individually switched between the state where the first storage unit 31 and the like described above and the battery 28 are connected or not.

  The battery 28 is charged by a commercial power source supplied from a predetermined power source and outputs electric power. In the example of FIG. 1, the battery 28 is charged by a part of commercial power supplied from the power supply unit 20. Then, the battery 28 outputs the remaining portion of the supplied commercial power supply and the discharged power by charging to the connection destination of the battery 28. The remaining commercial power supply refers to a portion of the commercial power supplied from the power supply unit 20 that has not been used for charging. The battery 28 also includes a first storage unit 31, a second storage unit 32, a transfer unit 33, an SDRAM 35, a recording monitoring unit 40, and a data acquisition unit according to the connection setting of the connection setting unit 27. 45, the AV input / output unit 50, the external peripheral input / output unit 55, and the control unit 60 are individually connected.

  The first storage unit 31 is connected to the control unit 60. Further, the first storage unit 31 is connected to the battery 28 according to the connection setting of the connection setting unit 27. The first storage unit 31 stores transfer data. In the example of FIG. 1, the first storage unit 31 stores the transfer data transferred from the second storage unit 32 by the transfer unit 33 when the connection setting unit 27 is set to the first connection setting. . Further, the first storage unit 31 operates according to a control signal input from the control unit 60. The first storage unit 31 is, for example, an HDD.

  The second storage unit 32 is connected to the control unit 60. The second storage unit 32 is connected to the battery 28 according to the connection setting of the connection setting unit 27. The second storage unit 32 stores acquired data including at least one of image data and audio data. In addition, the second storage unit 32 is set to operate with less power consumption than the first storage unit 31 and to store acquired data at a faster speed than the first storage unit. In the example of FIG. 1, the second storage unit 32 stores the acquired data input from the data acquisition unit 45. Further, the second storage unit 32 operates according to a control signal input from the control unit 60. The second storage unit 32 is a flash memory or the like.

  The transfer unit 33 transfers the acquired data stored in the second storage unit 31 as transfer data. Specifically, when the connection setting unit 27 is set to the first connection setting, the transfer unit 33 transfers the acquired data stored in the second storage unit 32 to the first storage unit 31 as transfer data. To do. The transfer unit 33 is a DMAC (Direct Memory Access Controller) or the like.

  The SDRAM 35 is connected to the control unit 60 and the power supply unit 25. The SDRAM 35 operates according to a control signal input from the control unit 60. The SDRAM 35 is a memory used when the control unit 60 performs various processes such as a decoding process. For example, the SDRAM 35 temporarily stores acquired data when the control unit 60 performs a decoding process.

  The recording monitoring unit 40 is connected to the control unit 60 and the battery 28. Further, the recording monitoring unit 40 operates according to a control signal input from the control unit 60. The recording monitoring unit 40 monitors the current time. Then, the recording monitoring unit 40 determines whether or not the current time is a time when recording starts or ends. For example, when receiving a program recording input from the user, the recording monitoring unit 40 acquires recording information such as the start time, end time, and channel (station number) of the recorded program. Then, the recording monitoring unit 40 refers to the current time and the above-described recording information, and determines whether or not it is time to start recording. When the recording monitoring unit 40 determines that it is time to start recording, the recording monitoring unit 40 instructs the control unit 60 to start recording. In addition, the recording monitoring unit 40 notifies the control unit 60 of power interruption when a power interruption signal is input from the power monitoring unit 26. Further, the recording monitoring unit 40 notifies the control unit 60 of power input when a power-on signal is input from the power monitoring unit 26.

  The data acquisition unit 45 is connected to the control unit 60 and the battery 28. The data acquisition unit 45 acquires at least one of image data and audio data as acquisition data. The data acquisition unit 45 outputs the acquisition data to the second storage unit 32. In the example of FIG. 1, the data acquisition unit 45 outputs the acquisition data after the decoding process to the second storage unit 32 via the control unit 60. The data acquisition unit 45 operates according to a control signal from the control unit 60. The data acquisition unit 45 is, for example, a tuner that receives a digital broadcast signal.

  The AV input / output unit 50 is connected to the control unit 60. The AV input / output unit 50 is connected to the battery 28 according to the connection setting of the connection setting unit 27. The AV input / output unit 50 inputs / outputs AV data in accordance with a control signal from the control unit 60. The AV input / output unit 50 is an interface for inputting / outputting AV data of images and sounds to / from an external device. For example, the AV input / output unit 50 is connected to a monitor, a speaker, a microphone, and the like (not shown). The AV input / output unit 50 outputs the recorded AV data to a monitor or the like. The AV input / output unit 50 includes at least one of an HDMI (registered trademark) (High-Definition Multimedia Interface) terminal, a D4 terminal, and a composite terminal.

  The external peripheral input / output unit 55 is connected to the control unit 60. The external peripheral input / output unit 55 is connected to the battery 28 according to the connection setting of the connection setting unit 27. The external peripheral input / output unit 55 operates according to a control signal from the control unit 60. The external peripheral input / output unit 55 is an interface (I / F) for inputting / outputting various control data to / from an external device. The external peripheral input / output unit 55 includes at least one of a USB terminal, a LAN (Local Area Network) terminal (for example, a wireless LAN terminal) and the like.

  The control unit 60 includes a battery 28, a first storage unit 31, a second storage unit 32, a transfer unit 33, an SDRAM 35, a recording monitoring unit 40, a data acquisition unit 45, and an AV input / output unit 50. And the external peripheral input / output unit 55. When the connection setting unit 27 is set to the first connection setting, the control unit 60 controls at least the first storage unit 31, the second storage unit 32, and the transfer unit 33. Further, the control unit 60 does not control the first storage unit 31 and the transfer unit 33 when the connection setting unit 27 is set to the second connection setting. In the example of FIG. 1, when the connection setting unit 27 is set to the first connection setting, the control unit 60 includes the first storage unit 31, the second storage unit 32, the transfer unit 33, and the SDRAM 35. The video recording monitoring unit 40, the data acquisition unit 45, the AV input / output unit 50, and the external peripheral input / output unit 55 are controlled. In the example of FIG. 1, the control unit 60 causes the connection setting unit 27 to perform the first connection setting until the power monitoring unit 26 outputs a power-off signal and after the power monitoring unit 26 outputs a power-on signal. Judge that it is set. On the other hand, in the control unit 60, the connection setting unit 27 sets the first connection setting until the recording monitoring unit 40 notifies the disconnection of the power supply and after the recording monitoring unit 40 notifies the input of the power supply. You may judge that The control unit 60 controls the second storage unit 32, the SDRAM 35, the recording monitoring unit 40, and the data acquisition unit 45 when the connection setting unit 27 sets the second connection setting. In the example of FIG. 1, the control unit 60 determines that the connection setting unit 27 has set the second connection setting until the power supply monitoring unit 26 outputs the power-off signal until the power-on signal is output. On the other hand, the control unit 60 may determine that the connection setting unit 27 has set the second connection setting until the recording monitoring unit 40 notifies the input of the power supply after notifying the disconnection of the power supply. . The control unit 60 is, for example, an MPEG (Motion Picture Experts Group) decoder LSI (Large Scale Integration). The control unit 60 decodes the acquired data acquired by the data acquiring unit 45 and converts it into AV data. AV data includes video data and audio data of a recorded program. For example, the control unit 60 converts the full-segment (12-segment) broadcast signal acquired by the data acquisition unit 45 into MPEG-2 / H. The decoding process is performed using the H.264 method. Furthermore, the control unit 60 exchanges data with the external peripheral input / output unit 55 and the AV input / output unit 50.

  The control unit 60 decodes the acquired data acquired by the data acquisition unit 45 using the SDRAM 35. Details of the decoding process will be described in the description of operations described later. Then, the control unit 60 outputs the acquired data after the decoding process. The control unit 60 outputs the acquired data after the decoding process to the second storage unit 32.

  The control unit 60 includes control blocks 60a to 60g. Each of the control blocks 60a to 60h includes a first storage unit 31, a second storage unit 32, a transfer unit 33, an SDRAM 35, a recording monitoring unit 40, a data acquisition unit 45, and an AV input / output unit 50. And the external peripheral input / output unit 55 are individually connected. The control unit 60 outputs a control signal to each connection destination (for example, the first storage unit 31 and the like) of the control blocks 60a to 60h via the control blocks 60a to 60h. Further, each of the plurality of control blocks 60a to 60h includes a control signal cutoff switch (not shown). When the control signal cutoff switch is turned on, the control unit 60 stops outputting the control signal to the connection destination of the control signal cutoff switch that is turned on. For example, the control unit 60 stops outputting the control signal to the first storage unit 31 when a control signal cutoff switch included in the control block 60a is turned on. In addition, when the control signal cutoff switches of the control blocks 60a to 60h are turned off, the control unit 60 outputs a control signal to the connection destination of the control block including the control signal cutoff switch turned off. For example, the control unit 60 outputs a control signal for the first storage unit 31 when a control signal cutoff switch of the control block 60a is turned off.

  In the present embodiment, the control unit 60 supplies power to the control blocks 60a to 60h when the connection setting unit 27 is setting the first connection setting. At this time, the control unit 60 includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, and the AV input / output unit 50. The control signal is output to the external peripheral input / output unit 55. The control unit 60 supplies power to the control blocks 60b and 60d to 60f when the connection setting unit 27 is setting the second connection setting. At this time, the control unit 60 outputs control signals to the second storage unit 32, the SDRAM 35, the recording monitoring unit 40, and the data acquisition unit 45.

  Next, the operation of the storage device 10 will be described with reference to FIGS. 2 to 4 are diagrams illustrating the operation of the storage device 10.

  First, the following operation for explaining the operation flow shown in FIGS. 2 to 4 is based on the premise that the battery 28 is charged by a commercial power source supplied from the power supply unit 20. Further, when commercial power having a voltage exceeding a predetermined value is input to the power supply unit 20, the power monitoring unit 26 outputs a power-on signal to the connection setting unit 27 and the recording monitoring unit 40.

  When commercial power having a voltage exceeding a predetermined value is input to the power supply unit 20, the power monitoring unit 26 outputs a power-on signal to the connection setting unit 27 and the recording monitoring unit 40, and the connection setting unit 27 First connection settings are set (S101). Accordingly, the connection setting unit 27 includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, the AV input / output unit 50, and the external peripheral input / output unit. 55 and the control unit 60 are connected to the battery 28.

  The battery 28 includes a first storage unit 31, a second storage unit 32, a transfer unit 33, an SDRAM 35, a recording monitoring unit 40, a data acquisition unit 45, an AV input / output unit 50, and an external peripheral input. Power is output to the output unit 55 and the control unit 60 (S102). Specifically, the battery 28 outputs a portion of the commercial power supplied from the power supply unit 20 that is not used for charging. Note that the battery 28 may output discharge power by charging.

  The recording monitoring unit 40 determines whether the current time is the time to start recording (S103).

  If it is not determined that the current time is the time to start recording (No in S103), the recording monitoring unit 40 determines again after a predetermined time has elapsed (S103).

  When the recording monitoring unit 40 determines that the current time is the time to start recording (Yes in S103), the power supply monitoring unit 26 determines whether or not the voltage of the commercial power supply is equal to or lower than a predetermined value ( S104).

  When the power supply monitoring unit 26 detects that the voltage of the commercial power supply is equal to or lower than a predetermined value (Yes in S104), the power supply monitoring unit 26 outputs a power-off signal to the connection setting unit 27 and the recording monitoring unit 40 ( S201 in FIG.

  When the power supply monitoring unit 26 does not detect that the voltage of the commercial power supply is equal to or lower than a predetermined value (No in S104), the control unit 60 outputs a control signal to each connection destination of the control blocks 60a to 60h. . And the data acquisition part 45 outputs the acquisition data after a decoding process to the 2nd memory | storage part 32 via the control part 60 (S105). Then, the transfer unit 33 outputs the acquired data stored in the second storage unit 32 to the first storage unit 31 as transfer data (S105). At this time, the control unit 60 includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the SDRAM 35, the recording monitoring unit 40, and the data acquisition unit via the control blocks 60a to 60h. 45, an AV input / output unit 50, and an external peripheral input / output unit 55. Specifically, the operation in this step is performed as follows. The data acquisition unit 45 outputs acquisition data that is a digital signal to the control unit 60. Next, the control unit 60 stores the acquired data that is a digital signal in the SDRAM 35. Then, the control unit 60 performs a decoding process on the acquired data stored in the SDRAM 35 and converts it into AV data. The control unit 60 takes out the converted acquired data from the SDRAM 35 and outputs it to the second storage unit 32. At this time, the SDRAM 35 deletes the stored acquired data. The second storage unit 32 stores the output acquired data. Finally, the transfer unit 33 transfers the acquired data stored in the second storage unit 32 to the first storage unit 31 as transfer data.

The power supply monitoring unit 26 determines whether the voltage of the commercial power supply is equal to or lower than a predetermined value in parallel with the process of S105. (S106)
When the power supply monitoring unit 26 detects that the voltage of the commercial power supply is equal to or lower than a predetermined value (Yes in S106), the power supply monitoring unit 26 performs the process of S201 illustrated in FIG.

  When the power supply monitoring unit 26 does not detect that the voltage of the commercial power supply is equal to or lower than a predetermined value (No in S106), the recording monitoring unit 40 determines whether or not the current time is the time when the recording ends. Determination is made (S107).

  When the recording monitoring unit 40 determines that the current time is not the time for ending recording (No in S107), the control unit 60 and the transfer unit 33 continue the process of S105.

  When the recording monitoring unit 40 determines that the current time is the time to end the recording (Yes in S107), the output of the power to the connection destination of the battery 28 by the battery 28 is stopped (S108). Further, the control unit 60 stops the data output by the data acquisition unit 45 and the transfer by the transfer unit 33 (S108). That is, the process of S102 and the process of S105 are stopped.

  In the operation shown in FIG. 2 in the present embodiment, the power supply monitoring unit 26 performs the process of S201 when detecting that the voltage of the commercial power supply is equal to or lower than a predetermined value in the processes of S104 and S106. . However, as described above, the power supply monitoring unit 26 always monitors whether the voltage of the commercial power supply is higher than a predetermined value or lower than a predetermined value. Thereby, between any of the processes of S101 to S106, the power supply monitoring unit 26 may perform the process of S201 when detecting that the voltage of the commercial power supply is equal to or lower than a predetermined value.

  When the power monitoring unit 26 outputs a power cut signal to the connection setting unit 27 and the recording monitoring unit 40 (S201), the connection setting unit 27 switches from the first connection setting to the second connection setting (S202). That is, the connection setting unit 27 connects the battery 28 to the second storage unit 32, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, and the control unit 60.

  The battery 28 supplies power to the second storage unit 32, the SDRAM 35, the recording monitoring unit 40, the data acquisition unit 45, and the control unit 60 (S203). Specifically, the battery 28 outputs discharge power by charging.

  The data acquisition unit 45 outputs the acquired data to the second storage unit 32 (S204). At this time, the control unit 60 outputs a control signal to each connection destination via the control blocks 60b and 60d to 60f. Specifically, the processing in this step is performed as follows. The data acquisition unit 45 outputs acquisition data that is a digital signal to the control unit 60. Next, the control unit 60 stores the acquired data, which is a digital signal, in the SDRAM 35. Next, the control unit 60 performs a decoding process on the acquired data stored in the SDRAM 35 and converts it into AV data. Next, the control unit 60 extracts the converted acquired data from the SDRAM 35 and outputs it to the second storage unit 32. Then, the SDRAM 35 deletes the stored acquired data. Finally, the second storage unit 32 stores acquired data. In this way, the data acquisition unit 45 outputs the acquired data to the second storage unit 32 via the control unit 60.

  In parallel with the process of S204, the power supply monitoring unit 26 determines whether it is detected that the voltage of the commercial power supply exceeds a predetermined value (S205).

  When the power supply monitoring unit 26 detects that the voltage of the commercial power supply exceeds a predetermined value (Yes in S205), the power supply monitoring unit 26 outputs a power-on signal to the connection setting unit 27 and the recording monitoring unit 40 ( (S301 in FIG. 4).

  If the power supply monitoring unit 26 does not detect that the voltage of the commercial power supply exceeds a predetermined value (No in S205), the recording monitoring unit 40 determines whether or not the current time is the time when the recording ends. (S206).

  When the recording monitoring unit 40 does not determine that the current time is the time for ending recording (No in S206), the storage device 10 continues the process in S204.

  When the recording monitoring unit 40 determines that the current time is the time to end the recording (Yes in S206), the output of the power source to the connection destination by the battery 28 is stopped (S207). Further, the control unit 60 stops the output of acquired data by the data acquiring unit 45 (S207). That is, the process of S203 and the process of S204 are stopped.

  Note that the storage device 10 performs the process of S301 in FIG. 4 when the power supply monitoring unit 26 detects that the voltage of the commercial power supply exceeds a predetermined value in S205. However, as described above, the power supply monitoring unit 26 constantly monitors the voltage or power of the commercial power supply output from the power supply unit 20 to the power supply unit 25. Thereby, the recording monitoring unit 40 performs the process of S301 in FIG. 4 when the power supply monitoring unit 26 detects that the voltage of the commercial power supply exceeds a predetermined value during any of the processes of S301 to S305. It is also good.

  When the power supply monitoring unit 26 outputs a power-on signal (S301), the connection setting unit 27 switches from the second connection setting to the first connection setting (S302).

  The battery 28 includes a first storage unit 31, a second storage unit 32, a transfer unit 33, an SDRAM 35, a recording monitoring unit 40, a data acquisition unit 45, an AV input / output unit 50, and an external peripheral input. Power is output to the output unit 55 and the control unit 60 (S303).

  When the process of S303 is completed, the storage device 10 performs the process of S105 in FIG.

  The operation of the storage device 10 according to the first embodiment has been described above.

  As described above, the storage device 10 described in the present embodiment includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the battery 28, the power supply monitoring unit 26, and the connection setting unit. 27. The first storage unit 31 stores transfer data. The second storage unit 32 operates with less power consumption than the first storage unit 31 and stores acquired data including at least one of image data and audio data at a faster speed than the first storage unit 31. . The transfer unit 33 transfers the acquired data stored in the second storage unit 32 as transfer data. The battery 28 is charged by a commercial power source supplied from a predetermined power source and outputs a power source. When the power supply monitoring unit 26 detects that the voltage of the commercial power supply is equal to or lower than a predetermined value, it outputs a power-off signal. The connection setting unit 27 connects either the first connection setting or the second connection setting. The first connection setting is a setting for connecting the first storage unit 31, the second storage unit 32, and the transfer unit 33 to the battery 27. The second connection setting is a setting in which the second storage unit 32 is connected to the battery 28 and the first storage unit 31 and the transfer unit 33 are not connected to the battery 28. The connection setting unit 27 sets the first connection setting until the power monitoring unit 26 outputs a power-off signal. When the power monitoring unit 26 outputs a power-off signal, the connection setting unit 27 sets the first connection setting. Switch from connection setting to second connection setting.

  As described above, the connection setting unit 27 sets the first connection setting while the power supply monitoring unit 26 does not output the power-off signal. Thus, the battery 28 is connected to the first storage unit 31, the second storage unit 32, and the transfer unit 33. On the other hand, when a power-off signal is input by the power monitoring unit 26, the connection setting unit 27 sets the second connection setting. As a result, the first storage unit 31 and the transfer unit 33 are not connected to the battery 28. Therefore, when the power supply monitoring unit 26 outputs a power-off signal, the connection setting unit 27 switches from the first connection setting to the second connection setting, whereby the power consumption of the storage device 10 can be suppressed.

  Further, when the connection setting unit 27 sets the first connection setting, the battery 28 outputs power to the second storage unit 32. On the other hand, even when the connection setting unit 27 sets the second connection setting, the battery 28 outputs power to the second storage unit 32. That is, the battery 28 supplies power to the second storage unit 32 both in the case where the connection setting unit 27 sets the first connection setting and in the case where the second connection setting is set. Output. For this reason, the power is output to the second storage unit 32 even at the moment of switching from the first connection setting to the second connection setting. As a result, no data is lost due to an instantaneous power interruption. The acquired data is stored in the second storage unit 32 both when the connection setting unit 27 sets the first connection setting and when the second connection setting is set. The As a result, data loss due to switching of the storage unit does not occur. As a result, no data is lost between the transfer data stored in the first storage unit 31 and the acquired data stored in the second storage unit 32.

  Therefore, according to the storage device 10, even if a power failure occurs, data can be stored while suppressing power consumption and preventing data loss.

  In addition, the storage device 10 outputs a power-on signal when the power monitoring unit 26 detects that the voltage of the commercial power supply exceeds a predetermined value. When the power monitoring unit 26 outputs a power-on signal, the connection setting unit 27 is configured to switch from the second connection setting to the first connection setting. With this configuration, the storage device 10 switches from the second storage unit 32 with low power consumption to the first storage unit 31 with high power consumption when the voltage of the commercial power supply exceeds a predetermined value. Accordingly, the storage device 10 can operate without suppressing power consumption when the voltage of the commercial power source is lower than a predetermined value and suppress power consumption, and when the voltage of the commercial power source exceeds a predetermined value. .

  In addition, the storage device 10 includes a control unit 60 that controls the first storage unit 31, the second storage unit 32, and the transfer unit 33. Then, when the connection setting unit 27 is set to the first connection setting, the control unit 60 controls the first storage unit 31, the second storage unit 32, and the transfer unit 33. The control unit 60 does not control the first storage unit 31 and the transfer unit 33 when the connection setting unit 27 is set to the second connection setting. With this configuration, the storage device 10 changes the control target by the control unit 60 when the voltage of the commercial power supply is equal to or lower than a predetermined value. Thereby, the storage device 10 can suppress power consumption necessary for control by the control unit 60 at the time of a power failure. Furthermore, the storage device 10 includes a transfer unit 33 and a control unit 60. That is, the storage device 10 controls the first storage unit 31, the second storage unit 32, and the transfer unit 33, and transfers the acquired data stored in the second storage unit 32 as transfer data. Are separately performed by the control unit 60 and the transfer unit 33. Therefore, even when a high load is applied to the control unit 60, the transfer by the transfer unit 33 can be performed stably, so that no data is lost due to a malfunction of the transfer operation.

  Further, the storage method related to the storage device 10 described in the present embodiment includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the battery 28, the power supply monitoring unit 26, and the connection setting. This is a storage method of a storage device including the unit 27. A storage method related to the storage device 10 is a storage method including a first connection step and a second connection step. In the first connection step, each of the first storage unit 31, the second storage unit 32, and the transfer unit 33 is set to a first connection setting for connecting to the battery 28. In the second connection step, when the voltage of the commercial power source is equal to or lower than a predetermined value, the second storage unit 32 is connected to the battery 28 from the first connection setting, and the first storage unit 31 and the transfer unit 33 are connected. Is switched to the second connection setting not to be connected to the battery 28.

  The storage method related to the storage device 10 can achieve the same effects as the storage device 10.

  The program related to the storage device 10 described in the present embodiment includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the battery 28, the power supply monitoring unit 26, and the connection setting. 3 is a control program for a storage device including the unit 27. A storage program related to the storage device 10 is a storage program including a first connection step and a second connection step.

  The program related to the storage device 10 can achieve the same effect as the storage device 10.

(Second Embodiment)
Next, the storage device 10A according to the second embodiment will be described with reference to FIG. FIG. 5 is a block diagram illustrating a configuration of the storage device 10A. In FIG. 5, constituent elements equivalent to those shown in FIG. 1 are denoted by the same reference numerals as those shown in FIG. 1.

  As illustrated in FIG. 5, the storage device 10 </ b> A includes a power supply monitoring unit 26, a connection setting unit 27, a battery 28, a first storage unit 31, a second storage unit 32, and a transfer unit 33. ing.

  When the power supply monitoring unit 26 detects that the voltage of the commercial power supply is equal to or lower than a predetermined value, it outputs a power-off signal.

  The connection setting unit 27 sets either the first connection setting or the second connection setting. The first connection setting is a setting for connecting each of the first storage unit 31, the second storage unit 32, and the transfer unit 33 to the battery 28. In the second connection setting, the second storage unit 32 is connected to the battery 28, and the first storage unit 31 and the transfer unit 33 are not connected to the battery 28. In addition, the connection setting unit 27 sets the first connection setting until the power monitoring unit 26 outputs a power-off signal.

  The battery 28 is charged by a commercial power source supplied from a predetermined power source and outputs electric power.

  The first storage unit 31 stores transfer data.

  The second storage unit 32 operates with less power consumption than the first storage unit 31 and stores acquired data including at least one of image data and audio data at a faster speed than the first storage unit 31. .

  The transfer unit 33 transfers the acquired data stored in the second storage unit 32 as transfer data.

  Next, the operation of the storage device 10A will be described with reference to FIG. FIG. 6 is a diagram illustrating an operation flow of the storage device 10A. The following operation for explaining the operation flow shown in FIG. 6 is based on the premise that the battery 28 is charged by a part of a commercial power source supplied from a predetermined power source.

  While there is no power-off signal input, the connection setting unit 27 sets the first connection setting (S1001).

  The battery 28 supplies power to the first storage unit 31, the second storage unit 32, and the transfer unit 33 (S1002).

  The second storage unit 32 stores acquired data (S1003). Further, the transfer unit 33 transfers the acquired data stored in the second storage unit 32 to the first storage unit 31 as transfer data (S1003).

  The power supply monitoring unit 26 determines whether the voltage of the commercial power supply is equal to or lower than a predetermined value (S1004).

  When the power supply monitoring unit 26 does not detect that the voltage of the commercial power supply is equal to or lower than the predetermined value (No in S1004), the storage device 10A continues the process of S1003 (S1005).

  When the power supply monitoring unit 26 detects that the voltage of the commercial power supply is equal to or lower than a predetermined value (Yes in S1004), the connection setting unit 27 outputs a power-off signal, and the second connection setting is changed from the first connection setting. (S1006).

  The battery 28 is connected to the second storage unit 32 and is not connected to the first storage unit 31 and the transfer unit 33. Thereby, the battery 28 stops the power supply output to the 1st memory | storage part 31 and the transfer part 33 (S1007).

  The second storage unit 32 stores acquired data (S1008).

  The operation of the storage device 10A has been described above.

  As described above, the storage device 10A described in the present embodiment includes the first storage unit 31, the second storage unit 32, the transfer unit 33, the battery 28, the power supply monitoring unit 26, and the connection setting unit. 27. The first storage unit 31 stores transfer data. The second storage unit 32 operates with less power consumption than the first storage unit 31 and stores acquired data including at least one of image data and audio data at a faster speed than the first storage unit 31. . The transfer unit 33 transfers the acquired data stored in the second storage unit 32 as transfer data. The battery 28 is charged by a commercial power source supplied from a predetermined power source and outputs a power source. When the power supply monitoring unit 26 detects that the voltage of the commercial power supply is equal to or lower than a predetermined value, it outputs a power-off signal. The connection setting unit 27 connects either the first connection setting or the second connection setting. The first connection setting is a setting for connecting the first storage unit 31, the second storage unit 32, and the transfer unit 33 to the battery 27. The second connection setting is a setting in which the second storage unit 32 is connected to the battery 28 and the first storage unit 31 and the transfer unit 33 are not connected to the battery 28. The connection setting unit 27 sets the first connection setting until the power monitoring unit 26 outputs a power-off signal. When the power monitoring unit 26 outputs a power-off signal, the connection setting unit 27 sets the first connection setting. Switch from connection setting to second connection setting.

  As described above, the connection setting unit 27 sets the first connection setting while the power supply monitoring unit 26 does not output the power-off signal. Thus, the battery 28 is connected to the first storage unit 31, the second storage unit 32, and the transfer unit 33. On the other hand, when a power-off signal is input by the power monitoring unit 26, the connection setting unit 27 sets the second connection setting. Thereby, the first storage unit 31 and the transfer unit 33 are not connected to the battery 28. Therefore, when the power supply monitoring unit 26 outputs a power-off signal, the connection setting unit 27 switches from the first connection setting to the second connection setting, whereby the power consumption of the storage device 10 can be suppressed.

  Further, when the connection setting unit 27 sets the first connection setting, the battery 28 outputs power to the second storage unit 32. On the other hand, even when the connection setting unit 27 sets the second connection setting, the battery 28 outputs power to the second storage unit 32. That is, the battery 28 supplies power to the second storage unit 32 both in the case where the connection setting unit 27 sets the first connection setting and in the case where the second connection setting is set. Output. For this reason, the power is output to the second storage unit 32 even at the moment of switching from the first connection setting to the second connection setting. As a result, no data is lost due to an instantaneous power interruption. The acquired data is stored in the second storage unit 32 both when the connection setting unit 27 sets the first connection setting and when the second connection setting is set. The As a result, data loss due to switching of the storage unit does not occur. As a result, no data is lost between the transfer data stored in the first storage unit 31 and the acquired data stored in the second storage unit 32.

  Therefore, according to the storage device 10A, even if a power failure occurs, data can be stored while suppressing power consumption and preventing data loss.

10, 10A Storage device 20 Power supply unit 25 Power supply unit 26 Power supply monitoring unit 27 Connection setting unit 28 Battery 30 Storage device 31 First storage unit 32 Second storage unit 33 Transfer unit 35 SDRAM
40 Recording monitoring unit 45 Data acquisition unit 50 AV input / output unit 55 External peripheral input / output unit 60 Control unit 60a, 60b, 60c, 60d, 60e, 60f, 60g, 60h Control block

Claims (5)

A first storage unit for storing transfer data;
A second storage unit that operates with less power consumption than the first storage unit and stores acquired data including at least one of image data and audio data at a faster speed than the first storage unit;
A transfer unit that transfers the acquired data stored in the second storage unit as the transfer data;
A battery that is charged by a commercial power source supplied from a predetermined power source and outputs a power source;
A power supply monitoring unit that outputs a power-off signal when detecting that the voltage of the commercial power supply is equal to or lower than a predetermined value;
A first connection setting for connecting each of the first storage unit, the second storage unit, and the transfer unit to the battery; and connecting the second storage unit to the battery; and And a connection setting unit for setting either the second connection setting that does not connect the transfer unit to the battery,
Until the power monitoring unit outputs the power-off signal, the connection setting unit sets the first connection setting, and when the power monitoring unit outputs the power-off signal, the connection setting unit A storage device for switching from the first connection setting to the second connection setting. When it is detected that the voltage of the commercial power supply exceeds a predetermined value, when the power monitoring unit that outputs a power-on signal and a power-on signal are output, from the second connection setting to the first connection setting The storage device according to claim 1. A control unit for controlling the first storage unit, the second storage unit, and the transfer unit;
When the connection setting unit is set to the first connection setting, the control unit controls the first storage unit, the second storage unit and the transfer unit,
When the connection setting unit is set to the second connection setting, the control unit does not control the first storage unit and the transfer unit,
The storage device according to claim 1. A first storage unit for storing transfer data;
A second storage unit that operates with less power consumption than the first storage unit and stores acquired data including at least one of image data and audio data at a faster speed than the first storage unit;
A transfer unit that transfers the acquired data stored in the second storage unit as the transfer data;
A battery that is charged by a commercial power source supplied from a predetermined power source and outputs a power source;
A storage method for a storage device comprising:
A first connection step of setting each of the first storage unit, the second storage unit, and the transfer unit to a first connection setting for connecting to the battery;
When the voltage of the commercial power source is equal to or lower than a predetermined value, from the first connection setting, the second storage unit is connected to the battery, and the first storage unit and the transfer unit are not connected to the battery. A second connection step for switching to a second connection setting;
A storage method including: A first storage unit for storing transfer data;
A second storage unit that operates with less power consumption than the first storage unit and stores acquired data including at least one of image data and audio data at a faster speed than the first storage unit;
A transfer unit that transfers the acquired data stored in the second storage unit as the transfer data;
A battery that is charged by a commercial power source supplied from a predetermined power source and outputs a power source;
A storage method for a storage device comprising:
A first connection step of setting each of the first storage unit, the second storage unit, and the transfer unit to a first connection setting for connecting to the battery;
When the voltage of the commercial power source is equal to or lower than a predetermined value, from the first connection setting, the second storage unit is connected to the battery, and the first storage unit and the transfer unit are not connected to the battery. A second connection step for switching to a second connection setting;
A program that causes a computer to perform processing including

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