JP2015038668A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device configured to improve overall write efficiency in writing data on a plurality of external storages simultaneously, in consideration of write speed of the external storages.SOLUTION: An electronic device which writes data on a plurality of external storages simultaneously includes: a test section which determines data transmission speed with respect to each of connected external storages; a division section which divides the total amount of data transmitted in a ratio of the data transmission speed obtained in the test section; and a transmission section which transmits transmission data to each of the external storages according to the division in the division section.

Description

  The present invention relates to an electronic apparatus that can more efficiently perform data write processing simultaneously performed on a plurality of external storages.

  When recording in a television receiver, a mode of using a hard disk drive (HDD) or the like as an external storage is increasing. Some of them connect and use a plurality of such external storages. This is useful because the storage capacity can be increased as a whole.

  On the other hand, when a plurality of external storages are used at the same time, there is a problem that it is difficult to improve the overall writing speed because performance such as writing speed in each external storage is different.

  As a technique for effectively using a plurality of external storages, for example, there is a technique called RAID. In this case, a plurality of storages are combined and operated as a single virtual storage.

  Also, in Patent Document 1, a virtual large-capacity virtual master boot record is created from a plurality of storage master boot records and accessed using the virtual master boot record, so that the plurality of storages is one large storage. The technology to make it look like is proposed.

JP 2003-50725 A

  However, the RAID technology is based on the premise that the performance of each storage is equivalent, and the performance of each storage is not considered. For example, even if the writing speed is different, the data to be written is equally divided and written to each storage. Therefore, the entire writing is not completed until the writing in the storage with the slowest writing speed is completed.

  The technique described in Patent Document 1 also realizes a large capacity by combining a plurality of storages into one, but does not attempt to improve the overall writing speed.

  As means for solving the above problems, the following inventions and the like are provided. That is, as a first invention, an electronic device that performs simultaneous writing to a plurality of external storages, the test unit for obtaining a data transmission speed for each connected external storage, and the data obtained by the test unit Provided is an electronic device having a dividing unit that divides a total amount of transmission data by a ratio of transmission speeds, and a transmitting unit that transmits transmission data to each external storage according to the division by the dividing unit.

  As a second invention, when the data to be transmitted is a file and the file to be transmitted to each external storage cannot be allocated at a ratio of the data transmission speed, the dividing unit is configured to perform the test. An electronic device according to the first aspect of the present invention has first dividing means for dividing at least one file at a ratio of the data transmission speed obtained in the section.

  As a third invention, when the data to be transmitted is a file, and the file to be transmitted is assigned to each external storage at a ratio of the data transmission speed, the dividing unit is configured as the test unit. The electronic device according to the first invention or the second invention having the second dividing means for dividing the data by allocating each file to each external storage at the ratio of the data transmission speed obtained in the above. To do.

  As a fourth invention, the plurality of external storages provide the electronic device according to any one of the first invention to the third invention, which is a plurality of disk devices built in one housing.

  As a fifth invention, the plurality of external storages are connected via a network, and the test unit obtains the data transmission speed including the network communication speed from the first invention to the fourth invention. An electronic device according to any one of the above is provided.

  As a sixth invention, when the test unit detects a newly available external storage, the pre-test unit for performing the test, and the result of holding the test result in the pre-test unit for later use An electronic device according to any one of the first to fifth inventions, comprising holding means.

  As a seventh invention, the dividing unit divides the transmission data total amount by an integer multiple of a predetermined transmission data unit when dividing the transmission data total amount by the ratio of the data transmission speed, and can divide the transmission data total amount by an integer multiple. A remaining transmission data amount acquisition unit that acquires a remaining remaining transmission data amount; and a remaining transmission data amount acquired by the remaining transmission data amount acquisition unit, to store at least one storage remaining capacity of each of the external storages When the remaining storage capacity determining means for determining whether the optimum storage remaining capacity for writing can be obtained, and when the determination result by the remaining storage capacity determining means is the determined remaining capacity And an optimal transmission control means for controlling the transmission unit to transmit data to the corresponding storage so as to achieve the optimal remaining capacity using the residual transmission data amount. To provide an electronic device according to one of Inventions in any one of the sixth invention.

  As an eighth invention, there is provided a television receiver including the electronic device according to any one of the first invention to the seventh invention.

  According to a ninth aspect of the invention, there is provided an operation method of an electronic device that performs simultaneous writing to a plurality of external storages, which is obtained by a test step for obtaining a data transmission speed for each connected external storage, and the test step. There is provided an operating method of an electronic device, comprising: a dividing step of dividing a total amount of transmission data by a ratio of the data transmission speed; and a transmitting step of transmitting transmission data to each external storage according to the division in the dividing step.

  According to a tenth aspect of the invention, there is provided a program for operating an electronic device that performs simultaneous writing to a plurality of external storages, the test step for obtaining a data transmission rate for each connected external storage, and the test step. A program for causing a computer to execute a dividing step of dividing the total amount of transmission data by the ratio of the data transmission speed and a transmitting step of transmitting transmission data to each external storage according to the division in the dividing step is provided. .

  As an eleventh invention, a recording medium storing the program according to the tenth invention is provided.

  According to the present invention, when writing to a plurality of external storages simultaneously, it becomes possible to improve the writing speed as a whole according to the performance of each storage.

Conceptual diagram showing how to write to multiple external storages in the prior art Conceptual diagram showing a mode of writing to a plurality of external storages in the first embodiment FIG. 3 is a diagram illustrating an example of functional blocks of the electronic device according to the first embodiment. 1 is a diagram illustrating an example of a hardware configuration of an electronic device according to a first embodiment. 6 is a flowchart illustrating an example of a processing flow in the electronic apparatus according to the first embodiment. FIG. 6 is a diagram illustrating an example of functional blocks of an electronic device according to a second embodiment. Conceptual diagram for explaining the first dividing means FIG. 10 is a diagram illustrating another example of functional blocks of the electronic device according to the second embodiment. Conceptual diagram for explaining the second dividing means 7 is a flowchart illustrating an example of a processing flow in an electronic device according to the second embodiment. FIG. 9 is a diagram illustrating an example of functional blocks of an electronic device according to a third embodiment. FIG. 10 is a diagram illustrating an example of functional blocks of an electronic device according to a fourth embodiment. Conceptual diagram for explaining the remaining transmission data amount acquisition means Conceptual diagram for explaining storage remaining capacity determination means

  Embodiments of the present invention will be described below. In addition, this invention should not be limited to these embodiments at all, and can be implemented in various modes without departing from the gist thereof.

The first embodiment will mainly describe claims 1, 4, 5, 8 to 10. The second embodiment will mainly describe claims 2 and 3. The third embodiment will mainly describe claim 6. The fourth embodiment will mainly describe claim 7.
<Embodiment 1>
<Summary of Embodiment 1>

  The electronic device of the present embodiment obtains a data transmission speed for each storage by performing a test on each of the plurality of storages, and divides the total amount of data to be transmitted according to the obtained data transmission speed. It is sent to each storage.

  FIG. 1 is a conceptual diagram showing a mode in which writing is performed simultaneously on a plurality of external storages in the prior art. Assume that the writing speed of “external storage A” is “5 MB / s” and the writing speed of “external storage B” is “10 MB / s”. When writing data by transmitting “60 MB” to each external storage, for example, with RAID technology, the total amount of data is equally divided and written to each by “30 MB”. “6 seconds” until the writing of the slow “Storage A” is completed is the time required to complete the writing as a whole.

FIG. 2 is a conceptual diagram illustrating a writing mode in the electronic device according to the present embodiment. Here, the ratio of the write speeds of “Storage A” and “Storage B” is “1: 2”. Therefore, “60 MB” of the total amount of data to be transmitted is distributed according to this ratio. That is, “20 MB” is written in “Storage A”, and “40 MB” is written in “Storage B”. In this case, in any storage, writing is completed in “4 seconds”. Therefore, writing as a whole is completed in “4 seconds”, and the time required to complete writing can be shortened by “2 seconds” compared to the case shown in FIG. As described above, by distributing the amount of data to be written according to the writing speed of each storage, data can be written most efficiently as a whole when writing to a plurality of external storages simultaneously.
<Configuration of Embodiment 1>

  An example of functional blocks of the electronic device of this embodiment is shown in FIG. The electronic device 0300 includes a test unit 0301, a division unit 0302, and a transmission unit 0303. The storage A0310 and the storage B0320 are connectable to an external storage.

  Here, the functional blocks of the apparatus may be realized as hardware, software, or both hardware and software. Specifically, if a computer is used, a CPU, a RAM, a bus, or an auxiliary storage device (a storage medium such as a nonvolatile memory or a memory card and a reader / writer of the medium), a display device, or other external device Examples include hardware components such as peripheral devices and I / O ports for external peripheral devices, driver programs and other application programs for controlling the hardware, and user interfaces used for information input.

  In addition, these hardware and software processes the programs developed on the RAM with the CPU, and processes, stores, and outputs data stored on the memory and hard disk, and data input via the interface. It is used for processing or controlling each hardware component. The present invention can be realized not only as an apparatus but also as a method. A part of the invention can be configured as software. Further, a software product used for causing a computer to execute such software, and a storage medium in which the product is fixed to a storage medium are naturally included in the technical scope of the present invention (the same applies throughout this specification). Is).

  The electronic device 0300 performs simultaneous writing to a plurality of external storages. For example, the electronic device 0300 is embodied as a television receiver, a video recording device such as an HDD (Hard Disk Drive) recorder, a personal computer, or the like. It can be embodied as a television receiver including an electronic device, a video recording device, a personal computer, or the like. “Simultaneous writing” not only means writing at the same time, but also when writing to a plurality of external storages as one process in the electronic device or while writing to one external storage. The other includes the case of writing.

  The test unit 0301 has a function of obtaining a data transmission speed for each connected external storage. The description in the outline of the present embodiment has been made on the assumption that the writing speed in each external storage is known. However, the writing speed of the connected external storage is not necessarily specified in advance. Therefore, a data transmission speed for transmitting data to be written to the connected external storage is to be obtained by a test.

  The test is performed, for example, by transmitting predetermined data to the connected external storage and measuring the time until the writing of the data in the external storage is completed. Such measurement is performed, for example, by monitoring a function executed to perform writing and measuring the time from the start to the end of the function as the time until completion of writing. As a result, for example, as described above, a value such as “5 MB / s” is obtained as the data transmission rate in “Storage A”.

  Note that the data transmission speed may include not only the value such as “data size per unit time” as described above but also the data size at which the value is obtained. This is because some storages perform a writing process for each specific block size, and in such a case, the processing speed may vary depending on the size of the block size. For example, when the test is performed with “30 KB” compared to the test with the data size of “20 KB”, a faster result is obtained, and the speed at that time is “5 MB / s”. Information including the speed “5 MB / s” and the data size “30 KB” may be used as the data transmission speed.

  In addition, when a plurality of external storages are connected via a network, the test unit obtains a data transmission speed including the communication speed of the network. With this configuration, when data is simultaneously written to a plurality of external storages connected via a network, data can be efficiently written as a whole.

  The test is executed when an instruction is input by the user, when the electronic device is started up, when an external storage is connected, etc., intermittently at predetermined intervals, or when the interface with the external storage changes. In such a case, the change may be detected. Further, the electronic device may be performed when the electronic device is in a standby state or an idle state, or in the night time zone. By configuring so that the test is performed intermittently, a failure or the like can be detected from the variation in the test results obtained cumulatively. If such a failure is detected, a warning is issued, or if other external storage is connected, all the data stored in the external storage suspected of failure You may comprise so that it may record on a cloud via an external storage or a network.

  The dividing unit 0302 has a function of dividing the total transmission data amount by the ratio of the data transmission rates obtained by the test unit. As described above, when the total amount of data to be transmitted is “60 MB” and the write speed ratio between “Storage A” and “Storage B” is “1: 2”, the data of “60 MB” Is divided by a ratio of “1: 2”. In addition, in order to restore or integrate the divided transmission data, information such as the divided position may be added.

  Note that, when dividing the total amount of transmission data by the ratio of the data transmission speeds, it is not always required to divide it strictly at the ratio. For example, when the storage performs data write processing in units of files or the like, it may be divided within a range that can be divided in units. The purpose or technical significance of dividing the total amount of transmission data by the ratio of the data transmission speed is that the writing in each external storage is completed in the same required time by distributing the data according to the writing speed for each external storage. There is. Therefore, as long as the technical significance is intended to be realized, it is allowed even if the ratio of the divided data does not exactly match the ratio of the data transmission speed. The ratio within such an allowable range is referred to as “substantially data transmission rate ratio”.

  The transmission unit 0303 has a function of transmitting transmission data to each external storage according to the division by the division unit. According to the above example, the transmission data of “20 MB” divided by the ratio of “1: 2” is transmitted to “Storage A”, and the transmission data of “40 MB” is transmitted to “Storage B”. In addition, since the amount of transmission data sent to each external storage and the data transmission speed of each external storage are known at the transmission stage, the estimated time to complete writing of the total amount of data to be transmitted, etc. The electronic device may be configured to display

  “Transmit according to division” is not limited to the case where transmission data is divided into “20 MB” and “40 MB” as in the above example, and transmission data transmitted to each external storage is As a result, transmission may be performed so that the data transmission speed ratio is obtained. If the above example is used, transmission of “1 MB” data to the storage A and transmission of “2 MB” data to the storage B are alternately performed. As a result, transmission of “20 MB” to the storage A, Transmission of “40 MB” to the storage B is performed.

The “plurality of external storages” may be a plurality of disk devices built in one housing. This is because the storage is not necessarily limited to the case where only one disk device is built in one housing. Even in such a case, a test is performed for each of a plurality of disk devices built in one housing, and the respective data transmission rates are obtained. Then, the total amount of transmission data is divided by the ratio of the data transmission speeds, and data is transmitted to each disk device according to the division.
<Embodiment 1 Hardware configuration>

  FIG. 4 is a diagram illustrating an example when the above-described functional configuration of the electronic apparatus according to the present embodiment is realized as hardware.

  As shown in FIG. 4, the electronic apparatus includes a CPU 0401 and a main memory 0402 for executing various arithmetic processes and realizing a test unit, a division unit, and a transmission unit. Also, a storage device 0403 that holds test data and data transmission speed for testing, an ID of each external storage, etc., and I / O (input / output) for realizing connection with a plurality of external storages 0404 and the like. Further, although not shown, a tuner and a communication interface for receiving broadcast waves are included. Then, they are connected to each other through a data communication path such as a system bus 0405 to perform transmission / reception and processing of information.

  A program is read into the main memory, and the CPU refers to the read program and executes various arithmetic processes according to the procedure indicated by the program. In addition, a plurality of addresses are assigned to the main memory and the storage device, respectively. In the arithmetic processing of the CPU, the arithmetic processing using the data is performed by specifying the address and accessing the stored data. It is possible.

In an electronic device, a CPU executes a test program and transmits test data via I / O. Then, the data transmission rate for each connected external storage is acquired. The acquired data transmission speed is stored in the storage device. Subsequently, the division program is executed to divide the transmission data by the ratio of the data transmission speed. Subsequently, the transmission program is executed to transmit the divided transmission data to a storage as a transmission destination.
<First Embodiment Processing Flow>

  FIG. 5 is a flowchart illustrating an example of a processing flow in the electronic apparatus of the present embodiment. Note that the steps shown below may be steps executed by each hardware configuration of the computer as described above, or may be processing steps that constitute a program recorded on a medium and controlling the computer. Good.

As shown in FIG. 5, first, a test for obtaining a data transmission rate for each connected external storage is executed (step S0501). Then, the transmission data total amount is divided by the ratio of the data transmission speed obtained in the executed test (step S0502). Then, the transmission data is transmitted to each external storage according to the division (step S0503).
<Embodiment 1 effect>

With the electronic apparatus of this embodiment, data can be efficiently written as a whole when data is simultaneously written to a plurality of external storages.
<Embodiment 2>
<Overview of Embodiment 2>

The electronic apparatus according to the present embodiment attempts to divide data in units of files when data to be transmitted is a file.
<Embodiment 2 configuration>

  An example of functional blocks of the electronic apparatus according to the present embodiment is shown in FIG. The electronic device 0600 is based on the first embodiment, and includes a test unit 0601, a dividing unit 0602, and a transmitting unit 0603, and the dividing unit includes a first dividing unit 0604. Then, it is configured to be connectable to an external storage such as the storage A 0610 and the storage B 0620. About the test part 0601 and the transmission part 0603, since it is the same as that of Embodiment 1, description here is abbreviate | omitted.

  When the data to be transmitted is a file, the first dividing unit 0604 is configured to obtain the data obtained by the test unit when the file to be transmitted cannot be allocated to each external storage at a ratio of the data transmission speed. It has a function of dividing at least one file by the transmission speed ratio. The “substantially ratio of data transmission rates” is the same as the “rough ratio of data transmission rates” described in the first embodiment.

  FIG. 7 is a conceptual diagram for explaining the first dividing means. As shown in the figure, the data to be transmitted consists of files such as “File A”, “File B”, and “File C”, and the data to be transmitted is transmitted to “Storage A” and “Storage B”. Then. When the ratio of the data transmission rates of “Storage A” and “Storage B” is “2: 3”, the data to be transmitted is divided according to this ratio. Here, it is difficult to assign the data to be transmitted to “2: 3” in units of files. Therefore, “File B” is divided into “File B1” and “File B2”, and “File A” and “File B1”, “File B2” and “File C” are divided into “3: 2”. To do.

  FIG. 8 shows another example of functional blocks of the electronic device according to this embodiment. The electronic device 0800 is based on the first embodiment, and includes a test unit 0801, a dividing unit 0802, and a transmitting unit 0803, and the dividing unit includes a second dividing unit 0804. And it is configured to be connectable to an external storage such as storage A0810 or storage B0820. About the test part 0801 and the transmission part 0803, since it is the same as that of Embodiment 1, description here is abbreviate | omitted. In addition, it is good also as a structure which also has the above-mentioned 1st division | segmentation means.

  When the data to be transmitted is a file, the second dividing unit 0804 assigns the data to be transmitted to each external storage at a ratio of the data transmission speed. It has a function of dividing data by allocating each file to each external storage at a speed ratio.

FIG. 9 is a diagram for explaining the second dividing means. As shown in the figure, the data to be transmitted consists of files such as “File A”, “File B”, and “File C”, and the data to be transmitted is transmitted to “Storage A” and “Storage B”. Then. When the ratio of the data transmission rates of “Storage A” and “Storage B” is “1: 1”, the data to be transmitted is divided according to this ratio. In this case, the data to be transmitted can be roughly assigned to “1: 1” in file units. Therefore, “File A” and “File B” and “File C” are divided into approximately “1: 1”.
<Embodiment 2 Hardware configuration>

The electronic device of the present embodiment can be realized according to the hardware configuration described in the first embodiment. Therefore, the description here is omitted.
<Embodiment 2 Processing Flow>

FIG. 10 is a flowchart illustrating an example of a processing flow in the electronic apparatus of the present embodiment. Here, the processing is performed when both the first dividing means and the second dividing means are provided. First, a test for obtaining a data transmission rate for each connected external storage is executed (step S1001). Then, it is determined whether or not a file to be transmitted can be assigned at a ratio of the approximate data transmission speed obtained in the executed test (step S1002). If the determination result indicates that the file cannot be allocated, at least one file is divided by the ratio of the obtained data transmission rates (step S1003). If the determination result indicates that the data can be allocated, the data is divided by the allocation (step S1004). Then, the transmission data is transmitted to each external storage according to the division in step S1003 or step S1004 (step S1005).
<Embodiment 2 effect>

With the electronic device of this embodiment, even when data to be transmitted is a file, data can be efficiently written to a plurality of external storages as a whole.
<Embodiment 3>
<Overview of Embodiment 3>

In the present embodiment, when a newly available external storage is detected, a test result for the external storage is retained to be useful for later use.
<Embodiment 3 configuration>

  An example of functional blocks of the electronic device according to the present embodiment is shown in FIG. The electronic apparatus 1100 is based on Embodiment 1 or 2, and includes a test unit 1101, a division unit 1102 having a first division unit 1104 and a second division unit 1105, and a transmission unit 1103. A test unit 1106 and a result holding unit 1107 are provided. The storage A1110 and the storage B1120 can be connected to an external storage. Since the division unit 1102 and the transmission unit 1103 are the same as those in the first or second embodiment, description thereof is omitted here.

  The pre-test unit 1106 has a function of performing a test for obtaining a data transmission rate for an external storage when a newly available external storage is detected. This test is the test described in the first embodiment.

  In order to detect a newly available external storage, the electronic apparatus may have a table or the like that acquires and holds information for identifying the external storage. By referring to the held table for the information for identifying the detected external storage, it is possible to determine whether the information is newly available.

  The result holding unit 1107 has a function of holding the test result of the preliminary test unit for later use. The table described above may be configured so as to be associated with information for identifying the external storage from which the test result is obtained.

The “subsequent use” can be used, for example, to detect a trouble such as a failure in each external storage. The test result obtained in the preliminary test is used as the reference value of the data transmission speed in the external storage, and the result of the test performed after that is compared. When a difference of a predetermined value or more is recognized in the result, an alarm can be generated. In addition, when writing is performed with a limited number of external storages connected to a plurality of external storages, the external storages may be used in order of increasing data transmission speed.
<Embodiment 3 Hardware Configuration>

The electronic device according to the present embodiment can be realized according to the hardware configuration described in the first or second embodiment. Therefore, the description here is omitted.
<Embodiment 3 Processing Flow>

The flow of processing in the electronic device of the present embodiment is in accordance with the flow of processing in the first or second embodiment. Therefore, the description here is omitted.
<Embodiment 3 effects>

By holding the test result for the connected external storage by the electronic device of the present embodiment, it can be used for later use such as detection of trouble.
<Embodiment 4>
<Outline of Embodiment 4>

In the electronic device according to the present embodiment, when the transmission data total amount is divided by the ratio of the data transmission speed, when the transmission data total amount is divided by an integer multiple of a predetermined transmission data unit, the remaining that cannot be divided by the integer multiple May occur. Accordingly, the remaining transmission data amount and the remaining capacity of the external storage are referred to, and the remaining transmission data is transmitted so that the remaining capacity of one or more external storages becomes the optimum remaining capacity for writing. .
<Embodiment 4 configuration>

  The electronic device according to the present embodiment is based on any one of the first to third embodiments. FIG. 12 shows an example of functional blocks of the electronic apparatus based on the first embodiment. The electronic apparatus 1200 includes a test unit 1201, a dividing unit 1202, and a transmitting unit 1203. The dividing unit includes a remaining transmission data amount acquisition unit 1204, a storage remaining capacity determination unit 1205, and an optimum transmission control unit 1206. Have The storage A1210 and the storage B1220 are connectable to an external storage. About the test part 1201 and the transmission part 1203, since it is the same as that of Embodiment 1, etc., description here is abbreviate | omitted.

  When the transmission data total amount is divided by the ratio of the data transmission speed, the remaining transmission data amount acquisition unit 1204 divides the transmission data total amount by an integer multiple ratio of a predetermined transmission data unit, and the remaining transmission data cannot be divided by an integer multiple. It has a function of acquiring the remaining transmission data amount.

  The remaining transmission data amount acquisition means will be described with reference to FIG. The data transmission speed of the storage A is “5 MB / s” and the capacity is “200 MB”. On the other hand, the data transmission speed of the storage B is “3 MB / s” and the capacity is “100 MB”. The ratio of the data transmission speed between the storage A and the storage B is “5: 3”, and the total amount of transmission data to be transmitted is “20 MB”.

  The remaining transmission data total amount obtaining unit divides the transmission data total amount at a ratio of an integral multiple of “1 MB” as a predetermined transmission data unit when dividing the transmission data total amount of “20 MB” by “5: 3”. The reason for dividing by an integer multiple ratio is that the processing efficiency often increases in such a case. The remaining transmission data total amount acquisition means allocates “20 MB” transmission data to storage A by assigning “10 MB” and to storage B by “6 MB”. As a result, the remaining “4 MB” that cannot be divided by an integer multiple is acquired as the remaining transmission data amount.

  The storage remaining capacity determination unit 1205 uses any remaining transmission data amount acquired by the remaining transmission data amount acquisition unit to set one or more storage remaining capacities of the external storages as the optimal storage remaining capacity for writing. It has a function to determine whether or not.

  “The optimum storage remaining capacity for writing” means that the remaining storage capacity is an integer multiple of the data size at which the throughput of writing data to the storage is highest. Since the storage performs processing for each specific block size when recording data, a data size with the highest write throughput exists inherent to the storage. Such a data size with the highest throughput can be obtained, for example, by measuring the writing speed while changing the data size of the transmission data. Then, if the remaining capacity of the storage after allocating the remaining transmission data is an integer multiple of the data size with the highest throughput, when the next write to that storage occurs, Writing in a high data size unit can be performed, and the most efficient writing can be performed on the storage. Therefore, such a remaining capacity is referred to as an optimum storage remaining capacity for writing. In the example shown in FIG. 13, the data size with the highest throughput in the storage A is “10 MB”, and the data size with the highest throughput in the storage B is “6 MB”.

  The determination using the remaining transmission data amount will be described with reference to FIG. Here, “use” means to provide the remaining transmission data amount for comparison or reference with the remaining capacity of each storage. “4 MB” is acquired as the residual transmission data amount by the residual transmission data acquisition means. Here, “10 MB” is allocated to the storage A, and when the allocated data is written, the remaining capacity of this storage becomes “190 MB”. In addition, when “6 MB” data allocated to the storage B is written, the remaining capacity of this storage becomes “94 MB”. Then, the remaining transmission data amount “4 MB” and the remaining storage capacities “190 MB” and “94 MB” are determined by comparison or reference.

  For example, as shown in FIG. 14A, when the remaining transmission data amount “4 MB” is allocated to the storage A, the remaining capacity of the storage A thereafter becomes “186 MB”, and the storage A has the highest throughput. It is not an integral multiple of the data size “10 MB”. Further, the remaining capacity of the storage B remains “94 MB”, which is not an integral multiple of the data size “6 MB” with the highest throughput. Therefore, it is not determined that any storage can have an optimum storage remaining capacity for writing.

  On the other hand, as shown in FIG. 14B, when the remaining transmission data amount “4 MB” is allocated to the storage B, the remaining capacity of the storage B thereafter becomes “90 MB”, and the storage B has the highest throughput. It is an integral multiple of “6 MB” which is the data size. Further, the remaining capacity of the storage A remains “190 MB”, which is an integral multiple of the data size “10 MB” with the highest throughput. Therefore, it is determined that any storage can have the optimum storage remaining capacity for writing.

  If the determination result by the storage remaining capacity determining means is the optimum remaining capacity, the optimum transmission control means 1206 uses the remaining transmission data amount to obtain the optimum remaining capacity. As described above, the transmission unit is controlled to transmit data to the corresponding storage. According to the above example, the transmission unit is controlled to transmit the remaining “4 MB” transmission data to the storage B.

  In this way, by transmitting data to the storage so as to have an optimal remaining capacity, when the next write to the storage occurs, data transmission is performed in units of data size with the highest throughput. be able to.

  In the above example, by assigning the remaining transmission data to the storage B, the storage remaining capacity optimum for writing can be achieved for both the storages A and B, but other cases are also conceivable.

For example, when the remaining transmission data is allocated to the storage B, only one of the storages of A or B can be set as the optimum storage remaining capacity for writing, and when the remaining transmission data is allocated to the storage A, In some cases, only the other storage of the A or B storage can be set to an optimum storage remaining capacity for writing. In such a case, it is preferable to allocate the remaining transmission data so that the storage having the smaller remaining capacity becomes the optimum storage remaining capacity for writing. This is because a storage with a large remaining capacity has more opportunities for the storage remaining capacity optimum for writing after that.
<Embodiment 4 Hardware Configuration>

The electronic device of the present embodiment can be realized according to the hardware configuration described in any of the first to third embodiments. Therefore, the description here is omitted.
<Embodiment 4 Processing Flow>

The flow of processing in the electronic device of this embodiment is in accordance with the flow of processing in any of the first to third embodiments. Therefore, the description here is omitted.
<Embodiment 4 Effect>

  The electronic apparatus according to the present embodiment can perform data transmission in the data size unit with the highest throughput when writing occurs next time.

0300 Electronic device 0301 Test unit 0302 Division unit 0303 Transmission unit 0310 Storage A
0320 Storage B

Claims (11)

An electronic device that simultaneously writes to multiple external storages,
A test unit for determining the data transmission speed for each connected external storage;
A dividing unit that divides the total amount of transmission data by a ratio of the data transmission rates obtained by the test unit;
An electronic apparatus comprising: a transmission unit that transmits transmission data to each external storage according to division by the division unit. If the data to be transmitted is a file, and if the file to be transmitted cannot be assigned to each external storage at approximately the ratio of the data transmission speed,
The electronic device according to claim 1, wherein the dividing unit includes a first dividing unit that divides at least one file by the ratio of the data transmission speed obtained by the testing unit. When the data to be transmitted is a file, when the file to be transmitted can be assigned to each external storage at a ratio of the data transmission speed,
The said division | segmentation part has a 2nd division | segmentation means to divide | segment data by allocating each file with respect to each external storage by the ratio of the said data transmission speed obtained in the said test part. Electronic equipment.   The electronic device according to any one of claims 1 to 3, wherein the plurality of external storages are a plurality of disk devices built in one housing. Multiple external storages are connected via a network,
The electronic device according to claim 1, wherein the test unit obtains the data transmission rate including a network communication rate. The test section is
A pre-test means for performing the test when a newly available external storage is detected;
A result holding means for holding the test result in the pre-test means for later use;
The electronic device according to claim 1, comprising: The dividing unit is
When dividing the transmission data total amount by the ratio of the data transmission speed, the transmission data total amount is divided by an integer multiple ratio of a predetermined transmission data unit, and the remaining residual transmission data amount that cannot be divided by the integer multiple is obtained. A transmission data amount acquisition means;
Storage remaining capacity for determining whether one or more storage remaining capacity of each of the external storages can be set to the optimum storage remaining capacity for writing using the remaining transmission data amount acquired by the remaining transmission data amount acquiring means Judgment means,
If the determination result by the storage remaining capacity determination means is a determination result that the optimum remaining capacity can be obtained, the remaining storage data amount is used for the corresponding storage so as to obtain the optimum remaining capacity. Optimal transmission control means for controlling the transmission unit to transmit data,
The electronic device according to claim 1, comprising:   A television receiver comprising the electronic device according to claim 1. An operation method of an electronic device that performs simultaneous writing to a plurality of external storages,
A test step to determine the data transmission rate for each connected external storage;
A dividing step of dividing the transmission data total amount by the ratio of the data transmission rates obtained in the test step;
A transmission step of transmitting transmission data to each external storage according to the division in the division step. A program for operating an electronic device that performs simultaneous writing to a plurality of external storages,
A test step to determine the data transmission rate for each connected external storage;
A dividing step of dividing the transmission data total amount by the ratio of the data transmission rates obtained in the test step;
A program for causing a computer to execute a transmission step of transmitting transmission data to each external storage according to the division in the division step.   A recording medium storing the program according to claim 10.

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