JP4845413B2 - Data processing device - Google Patents

Description

  The present invention relates to a data processing device, and more particularly to a data processing device that is applied to, for example, a voice recorder and secures data transferred from an external device.

An example of a conventional device of this type is disclosed in Patent Document 1. According to this prior art, when data stored in the storage memory of the recording / reproducing apparatus is transmitted to the PC, the data is read from the storage memory by the memory driver. The read data is given to the network I / F, and then transferred to the PC through a USB (Universal Serial Bus) cable.
Japanese Patent Publication No. 2003-323267 [G06F 3/06, 12/00, G10L 19/00]

  However, in the prior art, the data transfer rate depends on the processing capability of the memory driver. In other words, the maximum USB transfer speed is 480 Mbps, and theoretically, data transfer can be completed in 10 seconds with MP3 data (about 600 Mbytes) for one CD (Compact Disk). Therefore, when the processing capability of the intervening memory driver is low, the USB transfer speed also decreases. As a result, in the prior art, there is a possibility that the connection time between the recording / reproducing apparatus and the PC becomes long. In addition, if the number of control chips interposed between the external device and the storage medium increases, this also becomes a factor affecting the data transfer rate.

  SUMMARY OF THE INVENTION Therefore, a main object of the present invention is to provide a data processing device that can shorten the connection time with an external device for data transfer.

  The data processing device according to the first aspect of the present invention receives a first transfer instruction for instructing data transfer from the external device (52) to the first recording medium (18) before connection with the external device is established. Accepting means (S15), first securing means (S33) for securing in the second recording medium (22) a free space having a capacity corresponding to at least the free capacity of the first recording medium in response to acceptance by the first receiving means. Writing means (48) for writing the data inputted from the external device after the connection with the external device is established into the free space secured by the first securing means, and the data written by the writing means with the external device First transfer means (S43) for transferring from the second recording medium to the first recording medium after the connection is cut off is provided.

  The first transfer instruction for instructing data transfer from the external device to the first storage medium is received by the first receiving means before the connection with the external device is established. In response to the reception of the first receiving means, the first securing means secures a free capacity having at least a capacity corresponding to the free capacity of the first recording medium in the second recording medium. Data input from the external device after the connection with the external device is established is written by the writing means in the free area secured by the first securing means. The data written by the writing means is transferred from the second recording medium to the first recording medium by the first transfer means after the connection with the external device is cut off.

  Before the connection with the external device is established, a free space is secured in the second storage medium, and data to be transferred from the external device to the first recording medium is written in this free space, thereby reducing the connection time with the external device. Shortening is achieved.

  A data transfer apparatus according to a second aspect of the present invention is dependent on the first aspect, and the write speed of the write means is higher than the transfer speed of the first transfer means. As a result, the connection time with the external device can be further shortened.

  A data transfer apparatus according to a third aspect of the present invention is dependent on the first or second aspect, and the capacity of the free area secured by the first securing means is equal to the capacity of the first recording medium.

  A data transfer apparatus according to a fourth aspect of the invention is dependent on any one of the first to third aspects, wherein the first recording medium is detachable and the second recording medium is a built-in type.

  A data transfer device according to a fifth aspect of the invention is dependent on any one of the first to fourth aspects, wherein a connection with the external device is established with a second transfer instruction for instructing data transfer from the first recording medium to the external device. Second accepting means (S19) for accepting before recording, second transfer means (S55) for transferring the data recorded on the second recording medium to the second recording medium in response to acceptance of the second accepting means, and second It further comprises output means (50) for outputting the data transferred by the transfer means to the external apparatus after the connection with the external apparatus is established. As a result, data can be transferred to the external device.

  A data transfer apparatus according to the invention of claim 6 is dependent on claim 5, and prior to the transfer operation of the second transfer means, a second securing means for securing a free area having a capacity corresponding to the capacity of the first recording medium. S53), and the second transfer means transfers the data to the empty area secured by the second securing means. Thereby, the data of the first recording medium can be transferred to the external device.

  The data transfer device according to the invention of claim 7 is dependent on claim 6, and the output operation of the output means determines whether or not the data in the empty area secured by the second securing means matches the data of the first recording medium. And a third transfer means (S69) for transferring the data in the free area secured by the second securing means to the first recording medium when the judgment result of the judging means is negative. ). Thereby, the consistency between the data transferred to the external device and the data transferred to the first recording medium can be maintained.

  According to the present invention, the connection time with an external device for data transfer can be shortened.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  Referring to FIG. 1, a voice recorder 10 of this embodiment has an audio playback function, an audio recording function, and a transfer function. The audio playback function and the audio recording function are functions realized by the voice recorder 10 alone, and the transfer function is a function realized by the voice recorder 10 and the PC 52.

  The voice recorder 10 has a memory card 18, an HDD 22, a USB controller 48 and a USB terminal 50. The memory card 18 is detachable and can be accessed by the MPU 44 when it is inserted in a slot (not shown), and the HDD 22 is built in the voice recorder 10. The USB controller 48 is preferably a USB transfer dedicated IC such as an ATA BRIDGE IC capable of high-speed transfer with the HDD 22.

  When the PC 52 and the USB terminal 50 are not connected, the GPIO 46 notifies the MPU 44 as a USB disconnected state. When the USB is not connected, the switch SW is connected to the terminal T1 by the MPU 44.

  When an audio playback operation is performed by the key input device 12, the MPU 44 sets the DSP 40 and the codec 30 to the expansion mode and the decoding mode, respectively. When reading the audio file stored in the memory card 18, the MPU 44 issues a read command to the memory card 18, and the memory card 18 gives the audio file to the MPU 44 through the I / F 20. The given audio file is given to the DSP 40 through the memory 42. The DSP 40 expands the compressed audio data included in the given audio file, and stores the expanded audio data in the memory 42. The MPU 44 provides the audio data stored in the memory 42 to the codec 30 through the bus 24. The codec 30 decodes the given audio data into an analog audio signal, and outputs the decoded audio signal from the speaker 26 through the amplifier 28.

  Further, when reading the audio file stored in the HDD 22, the MPU 44 issues a read command to the HDD 22, and the HDD 22 gives the audio file to the MPU 44 through the switch SW. The given audio file is given to the DSP 40 through the memory 42. The DSP 40 expands the compressed audio data included in the given audio file, and stores the expanded audio data in the memory 42. The MPU 44 provides the audio data stored in the memory 42 to the codec 30 through the bus 24. The codec 30 decodes the given audio data into an analog audio signal, and outputs the decoded audio signal from the speaker 26 through the amplifier 28.

  The MPU 44 also instructs the LCD controller 16 to output mode information “audio playback mode”. The mode information is displayed on the LCD monitor 14. Thus, an audio playback function is realized.

  When an audio recording operation is performed by the key input device 12, the MPU 44 sets the codec 30 and the DSP 40 to the encoding mode and the compression mode, respectively. The codec 30 encodes the audio signal captured by the microphones 34 and 38 and amplified by the amplifiers 32 and 36 into digital audio data, and the MPU 44 compresses the encoded audio data by the DSP 40, and the given audio data The compressed audio data is stored in the memory 42. The MPU 44 stores the compressed audio data stored in the memory 42 in the HDD 22 in a file format. The MPU 44 further instructs the LCD controller 16 to output the mode information in order to display the mode information “audio recording mode” on the LCD monitor 14. Thus, an audio recording function is realized.

  The compressed audio data stored in the memory 42 can also be recorded on the memory card 18. Specifically, the MPU 44 stores the compressed audio data stored in the memory 42 in the memory card 18 through the I / F 20 in a file format.

  The HDD 22 forms a use area and a free area. Initially, all areas of the HDD 22 are empty areas, and when an audio file is given to the HDD 22, the HDD 22 stores the given audio file. The area where the stored audio file is stored is assigned to the HDD 22 as a use area. When the MPU 44 notifies the HDD 22 of the capacity of the memory card 18, as shown in FIG. 2, the HDD 22 allocates a virtual memory card area having a capacity corresponding to the capacity of the virtual memory card to a free area. When the MPU 44 issues a backup processing command to the HDD 22, the audio file in the memory card 18 is stored in the virtual memory card area. As a result, the PC 52 can indirectly access the audio file stored in the memory card 18.

  The voice recorder 10 and the PC 52 have a transfer function. The transfer function is a function realized by a PC → memory card transfer process or a memory card → PC transfer process. When the PC 52 and the USB terminal 50 are connected, the GPIO 46 notifies the MPU 44 that the USB connection has been made.

  When a PC → memory card transfer operation is performed by the key input device 12, the MPU 44 instructs the LCD controller 16 to output mode information “PC → memory card transfer mode”. The MPU 44 also confirms the capacity of the memory card 18 and allocates a virtual memory card area to the HDD 22 with such capacity. Upon confirming the USB connection, the MPU 44 connects the switch SW to the terminal T2. The PC 52 transfers the audio file to the USB memory controller 46 through the USB terminal 50, and the transferred audio file is given to the HDD 22 through the switch SW. The HDD 22 stores the given audio file in the virtual memory card area. When notifying that the GPIO 46 has transitioned to the USB disconnected state, the switch SW is connected to the terminal T1 by the MPU 44. The MPU 44 transfers the audio file in the virtual memory card area of the HDD 22 to the memory card 18 via the memory 42. When the transfer is normally completed, the MPU 44 deletes the audio file in the virtual memory card area.

  As described above, in the PC → memory card transfer process, the virtual memory card area is allocated to the HDD 22 having a high transfer rate with the PC 52 prior to the connection with the PC 52. After the connection with the PC 52, the audio file transferred from the PC 52 is first recorded in the virtual memory card area. When the connection with the PC 52 is released, the audio file in the virtual memory card area is immediately transferred to the memory card 18. Thereby, the connection time with the PC 52 for data transfer can be shortened.

  When the memory card → PC transfer operation is performed by the key input device 12, the MPU 44 instructs the LCD controller 16 to output mode information “memory card → PC transfer mode”. The MPU 44 confirms the capacity of the memory card 18 and notifies the HDD 22 of the capacity. The HDD 22 allocates a virtual memory card area, and the audio file of the memory card 18 is transferred to the virtual memory card area via the bus 24 and the memory 42. Upon confirming the USB connection, the MPU 44 connects the switch SW to the terminal T2. The HDD 22 transfers the audio file written in the virtual memory card area to the PC 52 through the switch SW in accordance with the access request from the PC 52.

  That is, in the memory card → PC transfer process, the audio file of the memory card 18 is temporarily stored in the virtual memory card area of the HDD 22 before being connected to the PC 52. The audio file is transferred from the HDD 22 to the PC 52 after the connection with the PC 52 is established. Thereby, the data transfer to the PC 52 can be executed promptly.

  The MPU 44 executes processing according to the flowcharts shown in FIGS. A control program corresponding to this flowchart is stored in the HDD 22.

  First, in step S1, it waits until the power is turned on. When the power is turned on, the process proceeds to step S3, and initialization processing is executed. At this time, the switch SW is connected to the terminal T1.

  In step S5, it is determined whether a PC → HDD transfer command has been received. If the determination result is YES, the process proceeds to step S7, and if the determination result is NO, the process proceeds to step S9. In step S7, a PC → HDD transfer process is executed. When this process is completed, the process returns to step S5. In step S9, it is determined whether an HDD → PC transfer command has been received. If the determination result is YES, the process proceeds to step S11, and if the determination result is NO, the process proceeds to step S13. In step S11, an HDD → PC transfer process is executed, and if this process is neglected, the process returns to step S5. In step S13, it is determined whether or not the memory card 18 is attached. If the determination result is YES, the process proceeds to step S15, and if the determination result is NO, the process returns to step S5. The PC → HDD transfer process is a process of transferring an audio file transferred from the PC 52 to the HDD 22, and the HDD → PC transfer process is a process of transferring an audio file transferred from the HDD 22 to the PC 52.

  In step S15, it is determined whether or not a PC → memory card transfer command has been received. If the determination result is YES, the process proceeds to step S17, and if the determination result is NO, the process proceeds to step S19. In step S17, a PC → memory card transfer process is executed. When this process is completed, the process returns to step S5. In step S19, it is determined whether or not a memory card → PC transfer command has been received. If the determination result is YES, the process proceeds to step S21, and if the determination result is NO, the process returns to step S5. In step S13, a memory card → PC transfer process is executed. When this process is completed, the process returns to step S5.

  The operation of the MPU 44 in response to the PC → memory card transfer process in step S17 will be described with reference to FIG. In step S31, the capacity of the memory card 18 is confirmed. In step S33, a virtual memory card area corresponding to the capacity of the memory card 18 is secured in the HDD 22. In step S35, it is determined whether or not the USB connection is established. When the GPIO 46 receives notification that the state has been changed to the USB connection state, the process proceeds to step S37 to connect the switch SW to the terminal T2. As a result, data transfer between the PC 52 and the HDD 22 is established. As a result, the data of the PC 52 is transferred to the virtual memory card area.

  When the transfer is completed, in step S39, the process waits until the USB is disconnected. When the GPIO 46 receives a notification that the state has been changed to the USB disconnected state, in step S41, the switch SW is connected to the terminal T1. In step S43, the audio file in the virtual memory card area is transferred to the memory card 18. In step S45, an instruction to delete the audio file in the virtual memory card area is issued to the HDD 22. The HDD 22 erases the audio file in the virtual memory card area in accordance with an instruction from the MPU 44. As a result, the use area of the HDD 22 can be saved and the free area can be expanded.

  The operation of the MPU 44 responding to the PC → memory card transfer process in step S21 will be described with reference to FIG. In step S51, the capacity of the memory card 18 is confirmed. In step S53, the capacity of the memory card 18 is secured in the HDD 22. In step S55, a backup processing command is issued to the HDD 22. The HDD 22 requests the memory card 18 to transfer data. The memory card 18 outputs data stored in the memory card 18 in accordance with a request from the HDD 22. The output data is output to the HDD 22 via the I / F 20. The HDD 22 writes the output data in the virtual memory card area. Thereby, the audio file in the memory card 18 can be transferred to the PC 52. As a result, the backup process of the memory card 18 is realized.

  In step S57, it is determined whether the USB connection is established. When the GPIO 46 receives a notification that the state has been changed to the USB connection state, the process proceeds to step S59 to connect the switch SW to the terminal T2. As a result, the audio file in the virtual memory card area is transferred to the PC 52.

  When the transfer is completed, in step S61, the process waits until the USB is disconnected. When the GPIO 46 receives notification that the state has been changed to the USB disconnected state, in step S63, the switch SW is connected to the terminal T1. In step S65, the audio file in the virtual memory card area written in the HDD 22 and the data in the memory card 18 are collated. In step S67, it is determined whether there is a difference based on the collation result. If the determination result is NO, the process proceeds to step S69. If the determination result is YES, the process proceeds to step S71, and a copy command is issued to the HDD 22 to copy the audio file in the virtual memory card area to the memory card 18. The HDD 22 issues a data erasure command to the memory card 18, and the memory card 18 erases the audio file stored in the memory card 18 according to the command of the HDD 22. The HDD 22 also transfers the audio file in the virtual memory card area to the memory card 18 through the switch SW. The transferred audio file is written to the memory card 18 via the I / F 20. Thereby, the consistency between the audio file transferred to the PC 52 and the audio file transferred to the memory card 18 can be maintained. As a result, the matching process of the memory card 18 is realized.

  In step S71, a command to delete the audio file in the virtual memory card area is issued to the HDD 22. The HDD 22 erases the data in the virtual memory card area in accordance with an instruction from the MPU 44.

  As can be understood from the above description, when the PC → memory card transfer operation is performed, the MPU 44 confirms the capacity of the memory card 18 and notifies the HDD 22 of the capacity. The HDD 22 allocates a virtual memory card area in accordance with the notification from the MPU 44. Upon confirming the USB connection, the MPU 44 connects the switch SW to the terminal T2. The audio file of the PC 52 is stored in the virtual memory card area by the HDD 22. When notifying that the GPIO 46 has transitioned to the USB disconnected state, the switch SW is connected to the terminal T1 by the MPU 44. The HDD 22 transfers the data in the virtual memory card area to the memory card 18 through the switch SW, and erases the data in the virtual memory card area.

  When a memory card → PC transfer operation is performed, the MPU 44 confirms the capacity of the memory card 18 and notifies the HDD 22 of the capacity. The HDD 22 allocates a virtual memory card area in accordance with the notification from the MPU 44. The HDD 22 reads the audio file of the memory card 18 and the read file is stored in the allocated virtual memory card area. Upon confirming the USB connection, the MPU 44 connects the switch SW to the terminal T2. The audio file in the virtual memory card area is transferred to the PC 52 via the switch SW. When notifying that the GPIO 46 has transitioned to the USB disconnected state, the switch SW is connected to the terminal T1 by the MPU 44. The MPU 44 collates the audio file in the virtual memory card area with the audio file in the memory card 18. If there is a difference between the data, the HDD 22 transfers the audio file in the virtual memory card area to the memory card 18, and the memory card 18 stores the audio file. When the transfer is completed, the HDD 22 deletes the audio file in the virtual memory card area.

  In the memory card → PC transfer process, a virtual memory card area is allocated to the HDD 22 having a high transfer speed with the PC 52. When the connection with the PC 52 is released, the audio file in the virtual memory card area is immediately transferred to the memory card 18. Thereby, the connection time with the PC 52 for data transfer can be shortened. On the other hand, in the PC → memory card transfer process, the audio file of the memory card 18 is temporarily stored in the virtual memory card area of the HDD 22 before being connected to the PC 52, so that the data transfer to the PC 52 can be executed quickly.

  In this embodiment, an audio file is used for explanation. However, for example, data such as text data and image data can be transferred.

  In this embodiment, the USB connection is described. However, the present invention can also store audio data from an external device to the HDD by wireless communication.

  Furthermore, in this embodiment, when audio files are transferred from the memory card to the HDD, it is assumed that all the audio files on the memory card are transferred. However, the present invention is not limited to this, and the audio files stored in the memory card are not limited. A part may be selected, and the selected audio file may be transferred to the virtual memory card area of the HDD. As a result, the backup processing time can be shortened. In addition, necessary data can be left in the memory card.

It is a block diagram which shows the structure of one Example of this invention. 3 is an illustrative view showing one example of a configuration of an HDD 22. FIG. It is a flowchart which shows a part of operation | movement of MPU44 applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of MPU44 applied to the FIG. 1 Example. It is a flowchart which shows a part of other operation | movement of MPU44 applied to the FIG. 1 Example.

Explanation of symbols

10 ... Voice recorder 12 ... Key input device 14 ... LCD
18 ... Memory card 22 ... HDD
24 ... bus 40 ... DSP
42 ... Memory 44 ... MPU
46… GPIO
48 ... USB controller 50 ... USB terminal 52 ... PC

Claims (7)

First receiving means for receiving a first transfer instruction for instructing data transfer from the external device to the first recording medium before connection with the external device is established;
First securing means for securing in the second recording medium at least a free space having a capacity corresponding to the free capacity of the first recording medium in response to acceptance by the first receiving means;
Writing means for writing data input from the external device after the connection with the external device is established into a free area secured by the first securing device, and data written by the writing device with the external device A data processing apparatus comprising first transfer means for transferring data from the second recording medium to the first recording medium after the connection is cut off.   The data processing apparatus according to claim 1, wherein a writing speed of the writing unit is higher than a transfer speed of the first transfer unit.   The data processing apparatus according to claim 1 or 2, wherein a capacity of an empty area secured by the first securing means is equal to a capacity of the first recording medium.   4. The data processing apparatus according to claim 1, wherein the first recording medium is detachable and the second recording medium is a built-in type. 5. Second accepting means for accepting a second transfer instruction for instructing data transfer from the first recording medium to the external device before connection with the external device is established;
Second transfer means for transferring data recorded on the first recording medium to the second recording medium in response to acceptance by the second acceptance means; and data transferred by the second transfer means for the external device 5. The data processing apparatus according to claim 1, further comprising an output unit configured to output to the external apparatus after a connection with is established. Prior to the transfer operation of the second transfer means, further comprising second securing means for securing a free area having a capacity corresponding to the capacity of the first recording medium,
6. The data processing apparatus according to claim 5, wherein the second transfer means transfers the data to an empty area secured by the second securing means. A discriminating unit for discriminating whether or not the data of the free area secured by the second securing unit coincides with the data of the first recording medium after the output operation of the output unit is completed, and a discrimination result of the discriminating unit The data processing apparatus according to claim 6, further comprising third transfer means for transferring free area data secured by the second securing means to the first recording medium when NO is negative.

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