JP2003308180A - Data recording device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] A plurality of Hs connected in a data storage device
For a DD, its transfer speed can be easily identified. A plurality of HDDs having different data transfer speeds
Data recording devices 3 and 4 coexist and constitute a system. Memory 6 read and written by processor 5
A data transmission circuit 7 for transmitting data in the memory 6 to the HDDs 3 and 4, a data reception circuit 8 for reading data from the HDDs 3 and 4, and a data transmission circuit 8 for transmitting data from the memory 6 to the HDDs 3 and 4. By comparing the read data with the maximum speed when both data match and the minimum speed when both data do not match, the HDD
Means 5 for determining the data transfer speeds of 3 and 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data recording device, and more particularly to a device for recording data such as images,
When there are multiple HDDs (hard disk drives) in the system, the most suitable HDD can be selected and used according to the data to be recorded. In other words, the existing HDDs are enabled. The present invention relates to a data recording device that can be utilized.

[0002]

2. Description of the Related Art In recent years, HDDs have come to be used as data recording devices at home. However, H
Since the DD has been used as a data recording device for a computer, the product cycle is short and the performance difference between generations is large. Some are used for high-performance workstations and some are used for inexpensive home personal computers, so the difference in performance depending on the application is significant.

This is because the recording capacity and the transfer rate have opposite properties. In an HDD having a high recording density per disk, the rotation speed of the disk cannot be increased, and if the rotation speed of the disk is increased, the data recording density will decrease. There are two types of HDDs, such as high-performance workstations and network drives, which have a small capacity but a high transfer rate, and an HDD having a large capacity and a low transfer rate, which is used in a personal computer. For this reason, there continue to be two types of drives on the market with different characteristics. HD with fast transfer speed
If a data recording device is made by using D, there is a possibility that sufficient recording capacity cannot be secured. Further, when the data recording device is made of an HDD having a low transfer rate, it may not be possible to secure a sufficient transfer rate. Although it is possible to construct a data recording device using an HDD having both a high transfer rate and a large storage capacity, this results in a very expensive system.

A conventional data recording device will be described below. FIG. 26 is a block diagram of a conventional data recording device. The data recording device 32 includes an HDD control device 33, a first HDD 34, and a second HDD 35. The HDD 34 and the HDD 35 provided in the data recording device 32 have, for example, the data capacity and the data transfer rate shown in FIG. The HDD 34 has a larger data capacity than the HDD 35, but has a low data transfer rate. Even in the same HDD, the data transfer rate is not constant due to the non-uniformity of the magnetic material on the disk and the difference in the linear velocity between the outer circumference and the inner circumference of the disk. Therefore, the transfer rates of the HDDs 34 and 35 are specified according to the low transfer rate.

For example, as data to be externally recorded in the data recording device 32, data having a data transfer rate of 10 megabytes / second is input by a capacity of 10 gigabytes, and then data of 20 megabytes / second is stored in a capacity of 5 gigabytes. Only input. HDD first data
If it is recorded in the HDD 35, the HDD 35 can no longer record the next data. In another case, for example, 10 megabytes / second of data is input with a capacity of 10 gigabytes, and then 5 megabytes / second.
It is assumed that the second data is input by the capacity of 15 gigabytes. At this time, if the first data is recorded in the HDD 34, the next data having a capacity of 15 gigabytes cannot be recorded without being divided.

[0006]

In such a data recording device, even if the HDD 34 having a low transfer rate has a sufficient available area as the capacity, it is not possible to record the data having a high transfer rate. . If data that can be sufficiently recorded in the HDD 34 having a low transfer rate is recorded in the HDD 35 having a high transfer rate, the HDD 3 having a high transfer rate will be recorded.
5 is occupied by data having a low transfer rate, and it becomes difficult to secure a sufficient area for recording data having a high transfer rate.

Therefore, according to the present invention, a plurality of HDs are connected.
It is an object of the present invention to allow the transfer rate of D to be easily identified.

[0008]

In order to achieve this object, the present invention provides a memory in which a processor reads and writes a data recording device in which a plurality of HDDs having different data transfer rates coexist to form a system. A data sending circuit for sending the data in the memory to the HDD; a data receiving circuit for reading the data from the HDD; and a data sent from the memory to the HDD and the data read from the HDD for comparison. The data transfer speed of the HDD is determined from the maximum speed when the data match and the minimum speed when the two data do not match.

With such a configuration, when a plurality of HDDs are present in the system, the data transfer rate of each HDD can be obtained, so that the optimum HDD can be selected according to the data to be recorded, This makes it possible to provide an excellent data recording device that can achieve high performance.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention according to claim 1 is a data recording device in which a plurality of HDDs having different data transfer rates coexist to form a system, and a memory which is read and written by a processor. HDD data in this memory
A data sending circuit for sending data to the HDD, a data receiving circuit for reading data from the HDD, the data sent from the memory to the HDD and the data read from the HDD, and the maximum speed when both data match and The data transfer speed of the HDD is calculated from the minimum speed when the data does not match.

With such a configuration, when a plurality of HDDs are present in the system, the data transfer rate of each HDD can be obtained, so that the optimum HDD can be selected according to the data to be recorded, This makes it possible to provide an excellent data recording device that can achieve high performance.

According to a second aspect of the present invention, a data recording apparatus, in which a plurality of HDDs having different data transfer rates coexist to form a system, includes a test data creating circuit and the test data creating circuit. A data sending circuit for sending the test data created by the HDD to the HDD, a data receiving circuit for reading the data from the HDD, the test data created by the test data creating circuit, and the data received by the data receiving circuit. From the data comparison circuit to be compared and the maximum speed when both data match and the minimum speed when both data do not match in this data comparison circuit,
And a means for obtaining the data transfer rate of the HDD.

With such a configuration, when a plurality of HDDs are present in the system, the data transfer rate of each HDD can be obtained, so that the optimum HDD can be selected according to the data to be recorded, This makes it possible to provide an excellent data recording device that can achieve high performance.

According to a third aspect of the present invention, the HDD has a plurality of areas having different data transfer rates, and the means for obtaining the data transfer rate of the HDD can obtain the data transfer rate for each area. It was done as it was.

With such a configuration, an area having a plurality of transfer rates can be set on one HDD, so that a portion having a high data transfer rate on one HDD can be effectively used. Further, by dividing the HDD into a plurality of areas, it is possible to test and use only the part where the situation has changed due to recording or deletion.

According to a fourth aspect of the present invention, an H having a plurality of areas having a predetermined recording capacity for each area and different data transfer rates for each area.
A data recording device of which the DD constitutes a system is capable of identifying a transfer rate of data to be recorded in the HDD, a transfer rate of the data identified by the transfer rate identifying means, and a transfer rate of this data. And a means for selecting an area for storing the data in the HDD according to the capacity.

With such a configuration, recording can be performed in the optimum area of the HDD by identifying the type of data to be recorded.

According to a fifth aspect of the present invention, an H having a plurality of areas having a predetermined recording capacity for each area and different data transfer rates for each area.
A data recording device in which the DD constitutes a system, a memory that is read and written by a processor, a data sending circuit that sends the data in the memory to each area of the HDD, and a data receiving circuit that reads the data from the area When,
Compare the data sent from the memory to each area with the data read from that area, and from the maximum speed when both data match and the minimum speed when both data do not match, the data of each area Depending on the means for obtaining the transfer rate, the transfer rate identifying means for identifying the transfer rate of the data to be recorded in the HDD, the transfer rate of the data identified by the transfer rate identifying means, and the capacity of this data,
And a means for selecting an area for storing the data in the HDD.

With such a configuration, when the HDD has a plurality of areas, the data transfer rate of each area can be obtained, so that the optimum area can be selected according to the data to be recorded. Thus, by identifying the type of data to be recorded, it is possible to record in the optimum area of the HDD.

According to a sixth aspect of the present invention, an H having a plurality of areas having a predetermined recording capacity for each area and different data transfer rates for each area.
A data recording device of which the DD constitutes a system includes a test data generation circuit, a data transmission circuit for transmitting the test data generated by the test data generation circuit to each area of the HDD, and data from the area. The data reception circuit to read, the data comparison circuit that compares the test data created by the test data creation circuit with the data received by the data reception circuit, and the maximum when both data match in this data comparison circuit A means for obtaining the data transfer speed of each area from the speed and the minimum speed when both data do not match, a transfer speed identifying means for identifying the transfer speed of the data to be recorded in the HDD, and the transfer speed. An area for storing the data in the HDD according to the transfer rate of the data identified by the identifying means and the capacity of the data It is obtained to have a means for selecting.

With such a configuration, when the HDD has a plurality of areas, the data transfer rate of each area can be obtained, so that the optimum area can be selected according to the data to be recorded. Thus, by identifying the type of data to be recorded, it is possible to record in the optimum area of the HDD.

According to a seventh aspect of the present invention, a data recording device in which a plurality of HDDs having different data transfer rates coexist to form a system is a first HDD for temporary recording.
And a second HDD for data storage having a data transfer rate lower than that of the first HDD, the data to be recorded is written to the first HDD, and then the first HDD
To the second HDD, the data to be read is copied from the second HDD to the first HDD, and then the first HDD can be read.

With such a configuration, by using the HDD having a high transfer capability as the HDD for temporary recording, it is possible to record the data with good performance even when combined with the low-speed storage HDD. it can.

According to an eighth aspect of the present invention, a memory that is read from and written to by a processor, a data transmission circuit that transmits data in the memory to each HDD, a data reception circuit that reads data from the HDD, The data sent from the memory to each HDD is compared with the data read from the HDD, and the data transfer of each HDD is performed based on the maximum speed when both data match and the minimum speed when both data do not match. From the means for obtaining the speed and the result of obtaining the data transfer speed of each HDD, the first H for temporary recording is obtained.
It has a means for selecting the DD and the second HDD for data storage.

With such a configuration, by recording the test pattern of the memory in the HDD, the HDD having a high data transfer capability is specified, and the HD having a high transfer capability is identified.
By using D as a temporary recording HDD, data can be recorded with good performance even when combined with a low-speed storage HDD.

According to a ninth aspect of the present invention, there is provided a test data creating circuit, and a data sending circuit for sending the test data created by the test data creating circuit to each HDD.
A data receiving circuit that reads data from the HDD, a data comparing circuit that compares the test data created by the test data creating circuit with the data received by the data receiving circuit, and both data in this data comparing circuit The means for obtaining the data transfer rate of each HDD from the maximum rate when they match and the minimum rate when both data do not match, and the first for temporary recording from the result of obtaining the data transfer rate of each HDD. Means for selecting the HDD and the second HDD for data storage.

With such a configuration, by using the test data creation circuit and the data comparison circuit, the HDD having a high data transfer capability is specified, and the HDD having a high transfer capability is used as the temporary recording HDD. Due to
Data can be recorded with good performance even in combination with a low-speed storage HDD.

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram of a data recording device according to the first embodiment. The data recording device 1 includes an HDD control device 2 and a first H
It is composed of a DD 3 and a second HDD 4. HDD
The control device 2 includes a processor 5 that controls the control device 2 and a memory 6 that can be read and written by the processor 5.
And a data transmission circuit 7 for transmitting data in the memory 6
And a data receiving circuit 8 that receives data sent from the HDDs 3 and 4. The HDD control device 2 controls writing and reading to and from the HDD 3 and the HDD 4. The HDD 3 and the HDD 4 have the illustrated data size and transfer capability, respectively.

The procedure for specifying the data transfer rate in the data recording device 1 will be described. FIG. 3 shows a process in which the HDD control device 2 performs a transfer rate check on the HDD 3. If the test for checking the transfer rate is started in step S-301, step S-30
At 2, the processor 5 of the HDD control device 2 writes test data in the memory 6. Then, in step S-303, based on the test data written in the memory 6, the data sending circuit 7 of the HDD control device 2 writes to the HDD 3 at, for example, 5 MB (megabyte) / second. The transfer rate at the time of writing is set from the processor 5 to the data sending circuit 7. Next, in step S-304, the data receiving circuit 8 reads the data from the HDD 3 and stores it in the memory 6. The transfer rate at the time of reading is set from the processor 5 to the data receiving circuit 8. Then, next, in step S-305, the test data is read from the memory 6 by the processor 5, and in step S-306, the read data and the step S-30 are read.
The data written in 2 is compared.

As a result, as shown in FIG. 2, the HDD 3 has a data transfer rate of 10 megabytes / second, and the above-mentioned writing and reading at 5 megabytes / second can be performed without any trouble. Therefore, in step S-306, both data are transferred. Match.

Next, in step S-308, the maximum speed when both data match and the minimum speed when they do not match are compared, but no mismatch has occurred at this stage, and as shown in the figure. Since the state of "continuous" has not occurred, it is judged "non-continuous", and step S-30
At 9, the transfer speed is increased. For example, transfer rate 25
Give up to megabytes / second.

Then, as in the case of 5 megabytes / second described above, the processing from step S-303 is performed. In this case, even though the data transfer rate of the HDD 3 is 10 megabytes / second, the transfer rate is set to 25 megabytes / second, so the result in step S-306 is "mismatch". Therefore, in step S-307, the data transfer rate is decreased to 15 megabytes / second this time, and the processes in step S-303 and the subsequent steps are similarly performed. Then, also in this case, the result in step S-306 is "mismatch".

Therefore, in step S-307, the data transfer rate is further reduced to 10 megabytes / second, and the processes in step S-303 and subsequent steps are similarly performed. In this case, the comparison result in step S-306 is “match”. At this time, assuming that the HDD control device 2 can transmit and receive the test data by setting the interval of 5 megabytes / second,
The maximum transfer rate at which data can be transferred is 10 megabytes / second. The minimum transfer rate at which data transfer could not be performed is 15 megabytes / second. At this stage,
In the HDD control device 2 in which the transfer rate can be set in units of 5 megabytes / second, there is no more transfer rate to test. Accordingly, in step S-308, it is possible to determine that the maximum speed at the time of matching and the minimum speed at the time of mismatching are “continuous”, and the HDD 3 has a size of 20 GB and 10 bytes.
You can confirm that the drive has the capacity of megabytes / second. Then, in step S-310, the test ends.

The HDD 4 can be similarly confirmed. As described above, according to the present embodiment, the data transfer rates of the HDDs 3 and 4 can be known by recording / reproducing the test pattern on the memory 6 to / from the HDDs 3 and 4.

(Second Embodiment) A second embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a configuration diagram of the data recording device in the second embodiment. Here, the data recording device 9 includes an HDD control device 10, a first HDD 11, and a second HDD 12. The HDD control device 10 includes a processor 13 that controls the control device 10, a pattern generation circuit 14 as a test data generation circuit in which a method of generating a test pattern is set from the processor 13, and the data, that is, the generated pattern, in the HDD 11 , 12, a data transmission circuit 15 for transmitting data to the HDDs 11, a data reception circuit 16 for receiving data transmitted from the HDDs 11, 12, and a pattern comparison as a data comparison circuit for comparing whether the received data is the same as the transmitted data. And a circuit 17. The HDD control device 10 includes an HDD 11 and an HDD.
Writing to and reading from 12 are controlled.

FIG. 5 is a configuration diagram of the pattern generation circuit 14 in the second embodiment. This pattern generation circuit 1
4 is a flip-flop 18 that is cleared by resetting from the processor 13 and that synchronizes the added result with the transfer clock, and increases 0 as a pattern, or
A selector 19 for selecting whether or not to increase only the increment instructed by the processor 13, and a flip-flop 18
The adder 20 that adds the value stored in the register and the increment in the selector 19, the counter 21 that is cleared by the previous reset and counts up with the transfer clock, and the signal when the number of repetitions matches the value of the counter 21 It is composed of a comparator 22 for outputting, a flip-flop 23 for synchronizing the output from the comparator 22, and a logical sum 24 for clearing the counter 21 even when the number of repetitions matches the value of the counter 21.

FIG. 6 is a configuration diagram of the pattern comparison circuit 17 in the second embodiment. This pattern comparison circuit 1
7 is a flip-flop 18 which is cleared by resetting from the processor 13, and 0 as a pattern.
A selector 19 for selecting whether to increase or to increase only the increase amount instructed by the processor 13, an adder 20 for adding the value accumulated in the flip-flop 18 and the increase amount in the selector 19, and the previous reset The counter 21 that is cleared by and is incremented by the transfer clock, the comparator that outputs a signal when the number of repetitions matches the value of the counter 21, the flip-flop 23 that synchronizes the output from the comparator 22, and the number of repetitions. A logical sum 24 for clearing the counter 21 even when the value of the counter 21 matches, a comparator 25 for comparing the transmission data and the reception data, and a result of the comparator 25 cleared by reset and synchronizing with the transfer clock. And a flip-flop 26.

The procedure for specifying the data transfer rate in the data recording device 9 of FIG. 4 will be described below. HDD
11. The HDD 12 has the data size and transfer capability shown in FIG.

First, the operation of the pattern generation circuit 14 will be described with reference to the timing chart shown in FIG. The generated data has an 8-bit width, the increment is "3", and the number of repetitions is "2". As a result, "3" is set as the increment input to the selector 19, and the comparator 2
Set “1”, which is “number of repetitions-1”, to 2. Then, as shown in FIG. 8, the transmission data output from the adder 20 is 00,00,03,03,06,06,0.
It becomes 9,09,0e, 0e, 12,12 ...

The pattern comparison circuit 17 sets "3" as the increment input to the selector 19 and sets "1" which is "the number of repetitions-1" to the comparator 22. Then, as shown in FIG. 8, the transmission data output from the adder 20 is 00,00,03,03,06,06,0.
It becomes 9,09,0e, 0e, 12,12 ... Similarly, the result of the comparator 25 that compares the pattern output from the adder 20 with the received data is synchronized with the transfer clock by using the flip-flop 26 and transmitted to the processor 13.

By using the pattern generation circuit 14 and the pattern comparison circuit 17, the HDD control device 13 outputs the HD
The process of checking the transfer speed for D11
Description will be made based on the flowchart of FIG. Step S-
If the test for checking the transfer rate is started in 901, in step S-902, the HDD control device 2
The processor 5 sets the test pattern. Then, in step S-903, the data transmission circuit 1
5 test pattern to HDD11 5MB /
Write in seconds. Next, in step S-904, the data receiving circuit 16 reads the data of the HDD 11 and compares the written test pattern with the read test pattern. The comparison result is read by the processor 13 in step S-905.

Then, as shown in FIG. 7, since the HDD 11 has a data transfer rate of 10 megabytes / second and the above-mentioned writing and reading at 5 megabytes / second can be performed without any trouble, both data are written in step S-906. Match.

Next, in step S-908, the maximum speed when both data match and the minimum speed when they do not match are compared, but no mismatch has occurred at this stage, and as shown in the figure. Since the state of "continuous" has not occurred, it is judged "non-continuous", and step S-90
At 9, the transfer speed is increased. For example, transfer rate 25
Give up to megabytes / second.

Then, as in the case of 5 megabytes / second described above, the processing from step S-903 is performed. In this case, even though the data transfer rate of the HDD 11 is 10 megabytes / second, the transfer rate is 25 megabytes / second, so the result in step S-906 is "mismatch". Therefore, in step S-907, the data transfer rate is decreased to 15 megabytes / second this time, and the processes in step S-903 and the subsequent steps are similarly performed. Then, also in this case, the result in step S-906 is "mismatch".

Therefore, in step S-907, the data transfer rate is further reduced to 10 megabytes / second, and the processes in step S-903 and subsequent steps are similarly performed. In this case, the comparison result in step S-906 is “match”. At this time, assuming that the HDD control device 9 can transmit and receive the test data by setting the interval of 5 megabytes / second, the maximum transfer rate at which the data can be transferred is 10 megabytes / second. The minimum transfer rate at which data transfer could not be performed is 15 megabytes / second. At this stage, you can set the transfer speed in units of 5 MB / sec.
In the D controller 9, there is no more transfer speed to test. Accordingly, in step S-908, it is possible to determine that the maximum speed at the time of coincidence and the minimum speed at the time of disagreement are “continuous”, and the HDD 11 drives the drive having a size of 20 GB and a capacity of 10 MB / sec. Can be confirmed. Then, step S-910.
The test ends with.

The HDD 12 can be confirmed in the same manner. As described above, according to the present embodiment, by recording / reproducing to / from the HDDs 11 and 12 using the pattern generation circuit 14 and the pattern comparison circuit 17, the HD
The data transfer rate of D11 and D12 can be known.

(Third Embodiment) A third embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a block diagram of the data recording device in this embodiment. Here, the data recording device 9 includes an HDD control device 10, a first HDD 11, and a second HDD 12. The HDD control device 10 controls writing to and reading from the HDD 11 and the HDD 12. 13 is a processor, 14 is a pattern generation circuit, 15 is a data transmission circuit,
Reference numeral 16 is a data receiving circuit, and 17 is a pattern comparison circuit.

In this embodiment, in the data recording device 9, the data transfer speed is specified while dividing the areas of the HDD 11 and the HDD 12 into a plurality of areas. The procedure will be described below. The HDD 11 and the HDD 12 are shown in FIG.
It is assumed that each 5 Gigabyte unit area shown in 1 has a different transfer rate. At this time, the HDD
The process of checking the transfer rate from the control device 10 to the HDD 11 will be described with reference to the flowchart of FIG. First, as shown in FIG.
Is divided into four 5 gigabyte areas. Then, the transfer capability is tested for each area.

If the test is started in step S-1201, the test for each area of the HDD 11 is started in step S-1202. Here, first, FIG.
The "area 1" test of the HDD 11 in (a) is started. Then, as in the case of the flow of FIG. 9 in the above-described second embodiment, test data is written in the HDD 11 at a predetermined transfer rate in step S-1203,
At -1204, the test data is read and compared. Next, in step S-1205, the HDD 11
If the write data to and the read data from the HDD 11 do not match, the transfer speed is reduced in step S-1206, and the process returns to step S1203 to repeat the same test. When the write data and the read data match in step S-1205, the maximum speed when both data match and the minimum speed when they do not match are compared in step S-1207. If it is "non-continuous" here, step S-1208
After increasing the transfer rate in step S1203, the process returns to step S-1203.

If it is determined in step S-1207 that the maximum speed at the time of coincidence and the minimum speed at the time of disagreement are "continuous", the data transfer speed of the "area 1" to be tested is accordingly determined. Can be checked. Then, the processing proceeds to step S-1209, and the HDD 11
It is determined whether or not all areas have been tested, and if there is an unchecked area, the flow returns to step S-1202 to check the unchecked area. Step S-
If it is determined in 1209 that there are no unchecked areas anymore, and thus checking of all areas has ended,
In step S-, the transfer capability test for the HDD 11 is performed.
The process ends at 1210.

The HDD 12 can be similarly tested. As described above, according to this embodiment, the data transfer rate for each area of the HDDs 11 and 12 can be known by dividing the HDDs 11 and 12 into a plurality of areas and testing the transfer capability.

(Fourth Embodiment) FIG. 13 is a block diagram of a data recording apparatus according to a fourth embodiment of the present invention. In this data recording device, the area to store the data to be recorded is uniquely determined by using the test result of the transfer capability.

Here, the data recording device 1 is composed of an HDD control device 2, a first HDD 11, and a second HDD 12. The HDD control device 2 includes a processor 5 for controlling the HDD control device 2, a data transmission circuit 7 for transmitting the data to be recorded to the HDDs 11 and 12, and a data reception for receiving the data read from the HDDs 11 and 12. It is composed of a circuit 8 and a type identification circuit 27 for identifying the transfer rate of the data to be recorded.

It is assumed that the HDD 11 and the HDD 12 have different transfer rates for each area of 5 gigabytes shown in FIG. At this time, as shown in FIG. 14, it is assumed that a table showing the configuration of the entire area of each HDD 11, 12 is obtained.

Next, using the flowchart of FIG.
The operation of recording on the HDDs 11 and 12 will be described. If recording is started in step S-1501, in step S-1502 the type identification circuit 27
The transfer rate of the data to be recorded is recognized, and the transfer rate is estimated in step S-1503. For example, when recognizing that the image data of 28 megabytes / second is input by 10 gigabytes (GB), in step S-1504, the area to be recorded is selected from the transfer data table of the area shown in FIG. select. Specifically, the entire area configuration table of the HDD shown in FIG. 14 is checked, and the first 5 gigabytes are recorded in the area 5 having a transfer capacity of 30 megabytes / second. Next 5GB is area 5
Has already been recorded, it is recorded in the area 6 having a transfer capacity of 35 megabytes / second. In this way, 28 megabytes / second data is recorded in area 5 and area 6, whereby recording ends in step S-1505.

As described above, according to this embodiment,
Since the transfer capabilities of the HDDs 11 and 12 are already known,
H by identifying the type of data to be recorded
Optimal recording on the DDs 11 and 12 can be performed.

(Fifth Embodiment) FIG. 16 is a block diagram of a data recording apparatus according to a fifth embodiment of the present invention. This data recording device is obtained by adding a test function of transfer capability similar to that of the first embodiment to the data recording device of the above-mentioned fourth embodiment. The test result is used to uniquely determine in which area the data to be recorded should be stored.

The details will be described below. FIG.
FIG. 3 is a configuration diagram of a data recording device in this embodiment. The data recording device 1 includes an HDD control device 2 and a first
HDD 10 and second HDD 11. The HDD control device 2 controls a processor 5 that controls the HDD control device 2, a memory 6 that can be read from and written to by the processor 5, and a data in the memory 6 in an HD format.
A data transmission circuit 7 capable of transmitting data to D11 and D12,
It comprises a data receiving circuit for receiving data sent from the HDDs 11 and 12, and a type identifying circuit 27 for identifying the transfer rate of the data to be recorded. H
As in the case of FIG. 14, the DD 11 and the HDD 12 have different transfer rates for each area of 5 gigabytes. At this time, H shown in FIG.
A table showing the entire area configuration of the DD is obtained in advance by checking the transfer capability. The flow for checking the transfer capability is the same as that shown in FIG. After that, according to the flow of FIG. 15, the recording operation is performed using the table of FIG. For example, when recognizing that the image data of 28 megabytes / second is input by 10 gigabytes, the entire area configuration table of the HDD is checked, and the area 5 having a transfer ability of 30 megabytes / second is first recorded. 5 GB is recorded. The next 5 gigabytes will be recorded in area 6 which has a transfer capacity of 35 megabytes / second since area 5 has already been recorded. In this way, 28 megabytes / second data is recorded in area 5 and area 6.

As described above, according to this embodiment,
By identifying the type of data to be recorded after knowing the transfer capability of the HDD 11, 12, the HDD 11,
Optimal recording to 12 can be performed.

(Sixth Embodiment) FIG. 17 is a block diagram of a data recording apparatus according to a sixth embodiment of the present invention. This data recording device is the same as the data recording device of the above-mentioned fourth embodiment with a test function of transfer capability similar to that of the second embodiment. The test result is used to uniquely determine in which area the data to be recorded should be stored.

Here, the data recording device 9 comprises an HDD control device 10, a first HDD 11 and a second HDD 12. The HDD control device 10 uses this HDD
A processor 13 for controlling the control device 10, a pattern generation circuit 14 set by the processor 13,
The data generated by the pattern generation circuit 14 is stored in the HDD
Data transmission circuit 15 for sending to 11, 12 and HDD 1
A data receiving circuit 16 for receiving the data sent from the first and the second data, a pattern comparing circuit 17 for comparing the received data with the transmitted data, and a transfer speed of the data to be recorded. Type identification circuit 2
7 and 7.

As in the case of FIG. 14, it is assumed that the HDD 11 and the HDD 12 have different transfer rates for each area of 5 gigabytes. At this time,
A table showing the entire area configuration of the HDD shown by 4 is obtained in advance by checking the transfer capability. The flow for checking the transfer capability is the same as that shown in FIG. The subsequent recording operation is as shown in the flowchart of FIG. 15 in the above-described fourth embodiment.
That is, for example, when recognizing that the image data of 28 megabytes / second is input by 10 gigabytes, the entire area configuration table of the HDD shown in FIG. 14 is checked and the transfer capacity of 30 megabytes / second is confirmed. Area 5
, The first 5 gigabytes are recorded. The next 5 gigabytes will be recorded in area 6 which has a transfer capacity of 35 megabytes / second since area 5 has already been recorded. In this way, 28 megabytes / second data can be stored in area 5
Is recorded in area 6.

As described above, according to this embodiment,
By knowing the transfer capabilities of the HDDs 11 and 12 in advance and identifying the type of data to be recorded, the H
Optimal recording on the DDs 11 and 12 can be performed.

(Seventh Embodiment) FIG. 18 is a block diagram of a data recording apparatus according to a seventh embodiment of the present invention. This data recording device uses an HDD having a high transfer rate as a temporary recording HDD.
Is used as. The data recording device 28 shown in FIG. 18 includes an HDD control device 29, a first HDD 30, and
It is composed of a second HDD 31. HDD 30, H
The DD 31 is assumed to have the data size and transfer capability shown in FIG. HDD3 with large data transfer capability
0 is used as a temporary recording HDD, and the HDD 31 having a small data transfer capacity is used as a storage HDD.

At this time, from the HDD control device 29 to the HDD
The process of recording on 30 will be described with reference to the flowchart of FIG. If recording is started in step S-2001, steps S-2002 and S-2
At 003, the received data is recorded in the HDD 30, which is an HDD for temporary recording. When recording is completed in step S-2003, steps S-2004 and S-20
At 05, the data stored in the HDD 30 is copied to the HDD 31, and the data is deleted from the original HDD 30. When all the data has been copied to the HDD 31, the recording ends in step S-2006.

Next, the process of reproducing the data stored in the HDD 31 will be described with reference to the flowchart of FIG. If the reproduction is started in step S-2101,
In steps S-2102 and S-2103, the HDD 31
The data stored in the HDD is copied to the HDD 30 for temporary recording, and the data is deleted from the HDD 31. Next, in steps S-2104 and S-2105, the data stored in the HDD 30 is reproduced. After the reproduction of all data is completed, in steps S-2106 and S-2107,
The reproduction data in the HDD 30 is stored again in the HDD 31, and the data is deleted from the HDD 30.

If the transfer speed of the HDD 30 for temporary recording is sufficiently high, another flow as described below can be taken. At this time, the process of recording from the HDD control device 29 will be described with reference to the flowchart of FIG. When the recording process is started in step S-2201, the received data is recorded in the HDD 30, which is an HDD for temporary recording, in step S-2202. In steps S-2203 and S-2204, the data stored in the HDD 30 is recorded on the HDD 30 while being recorded as described above.
Copy to HDD 31 and transfer to HDD 31 to HD
Delete from D30. After recording all the data in the HDD 30 in step S-2204, step S-
In 2205, all the data is moved to the HDD 31 for storage, the process returns to step S-2203, all the data recorded in the HDD 30 is deleted, and the recording ends in step S-2206.

Next, the process of reproducing the data stored in the HDD 31 will be described with reference to the flowchart of FIG. If the reproduction process is started in step S-2301, the data accumulated in the HDD 31 is copied to the HDD 30 for temporary recording in step S-2302, and in the HDD 30 in steps S-2303 and S-2304. It is deleted from the HDD 30 after the reproduction is completed. In step S-2305, reproduction of all data is completed, in step S-2303, all data is deleted, and in step S-2306, reproduction processing is completed.

As described above, when the data transfer rate is faster than the data input rate from the outside, the HDD for temporary recording is used.
H for storing data in a time shorter than the time stored in 30
It is possible to transfer the data to the DD 31. As described above, if the data transfer rate at this time is slower than the data input rate from the outside, a time longer than the time stored in the HDD 30 for temporary recording is required, but data that cannot be stored directly is stored. The data can be stored in the HDD 31. Furthermore, instead of deleting all the data from the HDD 30 for temporary recording, by storing partial data that can be used as thumbnails, the user response at the time of reproduction can be improved. Recording is always performed in the high-speed HDD 30 for temporary recording, and reproduction is performed after moving data from the HDD 31 for accumulation to the HDD 30 for temporary recording. As a result, an HDD that cannot be used due to a low data transfer rate in the case of direct recording or direct reproduction can also be used as a storage HDD. If data can be transferred to the HDD 31 for storage while recording in the HDD 30 for temporary recording, the overhead generated by using the HDD 30 for temporary recording can be reduced and good performance can be realized. be able to.

As described above, according to this embodiment,
By using the HDD having high transfer capability as the HDD for temporary recording, it is possible to record data with good performance even when combined with the low-speed HDD for storage.

In the seventh embodiment, one temporary storage HDD and one storage HDD have been described, but instead, a plurality of temporary storage HDDs and a plurality of storage HDDs are used. You may use a table.

(Embodiment 8) A data recording apparatus according to the eighth embodiment is the data recording apparatus according to the seventh embodiment with the transfer capability test function of the first embodiment added. Then, the result after the test is used to determine which HDD should be the HDD for temporary recording.

FIG. 24 is a block diagram of a data recording device in the eighth embodiment. This data recording device 28
Includes an HDD control device 29, a first HDD 30, and a second HDD
HDD 31 of. HDD controller 29
Includes a processor 5 that controls the HDD control device 29, a memory 6 that can be read and written by the processor,
A data transmission circuit 7 capable of transmitting data in the memory 6
And a receiving circuit 8 for receiving data sent from the HDDs 30 and 31. HDD30, HD
It is assumed that D31 has the data size and transfer capability shown in FIG.

In the data recording device shown in FIG. 24, the flow for checking the transfer capability is the same as that shown in FIG. If the transfer capacity of the HDDs 30 and 31 can be checked, the HDD 3 having a large data transfer capacity
0 is used as the temporary recording HDD, and the HDD 31 having a small data transfer capability is used as the storage HDD to perform recording and reproduction according to the flowcharts of FIGS.

According to this embodiment, the test pattern of the memory 6 is recorded in the HDDs 30 and 31 to identify the HDD having a high data transfer capacity and use the HDD having a high transfer capacity as a temporary recording HDD. As a result, data can be recorded with good performance even in combination with a low-speed storage HDD.

In the eighth embodiment, one temporary storage HDD and one storage HDD are described, but instead, a plurality of temporary storage HDDs and a plurality of storage HDDs are used. You may use a table.

(Ninth Embodiment) A data recording apparatus according to the ninth embodiment is the data recording apparatus according to the seventh embodiment to which a transfer capability test function according to the second embodiment is added. Then, the result after the test is used to determine which HDD should be the HDD for temporary recording.

FIG. 25 is a block diagram of a data recording device in the ninth embodiment. This data recording device 28
Includes an HDD control device 29, a first HDD 30, and a second HDD
HDD 31 of. HDD controller 29
Is a processor 13 for controlling the HDD control device 29, a pattern generation circuit 14 set by the processor 13, a data transmission circuit 15 for transmitting the data to the HDDs 30, 31, and data transmitted from the HDDs 30, 31. And a pattern comparison circuit 17 for comparing whether the received data is the same as the transmitted data. HDD 30, H
The DD 31 is assumed to have the data size and transfer capability shown in FIG.

In the data recording device shown in FIG. 25, the flow for checking the transfer capability is the same as that shown in FIG. 9 described above. If the transfer capacity of the HDDs 30 and 31 can be checked, the HDD 3 having a large data transfer capacity
0 is used as the temporary recording HDD, and the HDD 31 having a small data transfer capability is used as the storage HDD to perform recording and reproduction according to the flowcharts of FIGS.

According to this embodiment, by using the pattern generation circuit 14 and the pattern comparison circuit 17, the HDD having a high data transfer capability is specified and the HDD having a high transfer capability is used as the temporary recording HDD. As a result, data can be recorded with good performance even in combination with a low-speed storage HDD.

In the ninth embodiment, one HDD for temporary recording and one HDD for accumulation have been described, but instead of this, a plurality of HDDs for temporary recording and a plurality of HDDs for accumulation are used. You may use a table.

[0082]

As described above, according to the present invention, a plurality of H
When the DD is present in the system, the data transfer rate of each HDD can be obtained, so that the most suitable HDD can be selected according to the data to be recorded, whereby an excellent data recording device that can achieve high performance Can be provided.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a data recording device according to a first embodiment of the present invention.

FIG. 2 is an area configuration diagram of the HDD shown in FIG.

FIG. 3 is a flowchart for checking test data in the data recording device of FIG.

FIG. 4 is a configuration diagram of a data recording device according to a second embodiment of the present invention.

5 is a configuration diagram of a pattern generation circuit in FIG.

6 is a configuration diagram of a pattern comparison circuit in FIG.

FIG. 7 is an area configuration diagram of the HDD shown in FIG.

FIG. 8 is a timing chart of the pattern generation circuit and the pattern comparison circuit in FIG.

9 is a flowchart for checking test data in the data recording device of FIG.

FIG. 10 is a configuration diagram of a data recording device according to a third embodiment of the present invention.

FIG. 11 is an area configuration diagram of the HDD shown in FIG.

12 is a flow chart for checking test data in the data recording device of FIG.

FIG. 13 is a configuration diagram of a data recording device according to a fourth embodiment of the present invention.

FIG. 14 is a total area configuration table of the HDD shown in FIG.

15 is a flowchart of a recording operation in the data recording device of FIG.

FIG. 16 is a configuration diagram of a data recording device according to a fifth embodiment of the present invention.

FIG. 17 is a configuration diagram of a data recording device according to a sixth embodiment of the present invention.

FIG. 18 is a configuration diagram of a data recording device according to a seventh embodiment of the present invention.

FIG. 19 is an area configuration diagram of the HDD shown in FIG.

20 is a flowchart of a recording operation in the data recording device of FIG.

FIG. 21 is a flowchart of a reproducing operation in the data recording device of FIG.

22 is a flowchart of another recording operation in the data recording apparatus in FIG.

23 is a flowchart of another reproducing operation in the data recording device of FIG.

FIG. 24 is a configuration diagram of a data recording device according to an eighth embodiment of the present invention.

FIG. 25 is a configuration diagram of a data recording device according to a ninth embodiment of the present invention.

FIG. 26 is a block diagram of a conventional data recording device.

FIG. 27 is an area configuration diagram of the HDD shown in FIG. 26.

[Explanation of symbols]

3, 11, 30 First HDD 4, 12, 31 2nd HDD 5, 13 processors 6 memory 7,15 Data transmission circuit 8, 16 data receiving circuit 14 Pattern generation circuit 17 pattern comparison circuit 27 type identification circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G11B 20/18 572 G11B 20/18 572B 572F (72) Inventor Takashi Otori 1006 Daimon Kadoma, Kadoma City, Osaka Prefecture Matsushita Denki Sangyo Co., Ltd. (72) Inventor Ryuichiro Tanaka 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Kenichiro Yamauchi 1006 Kadoma, Kadoma City, Osaka Prefecture F-term within Matsushita Electric Industrial Co., Ltd. Reference) 5B065 BA01 CC08 EC10 5D044 BC01 CC05 CC09 DE68 EF03 FG10 GK10 HH07

Claims (9)

[Claims] 1. A data recording device in which a plurality of hard disk drives having different data transfer rates coexist to form a system, a memory read and written by a processor, and data in the memory. Data transmission circuit that sends the data to the hard disk drive,
A data receiving circuit that reads data from the disk drive, compares the data sent from the memory to the hard disk drive with the data read from the hard disk drive, and the maximum speed when both data match And a means for obtaining the data transfer speed of the hard disk drive from the minimum speed when both data do not match. 2. A data recording device comprising a system in which a plurality of hard disk drives having different data transfer speeds coexist to form a system, and a test data creating circuit,
The test data creation circuit creates the test data created by the test data creation circuit, the data sending circuit that sends the test data to the hard disk drive, the data receiving circuit that reads the data from the hard disk drive, and the test data creation circuit. From the data comparison circuit that compares the test data and the data received by the data reception circuit, and the maximum speed when both data match and the minimum speed when both data do not match in this data comparison circuit, A data recording device having means for determining a data transfer rate of the hard disk drive. 3. The hard disk drive has a plurality of areas having different data transfer rates,
3. The data recording device according to claim 1, wherein the means for determining the data transfer rate of the drive can determine the data transfer rate for each area. 4. A data recording system comprising a hard disk drive having a plurality of areas each having a predetermined recording capacity and a different data transfer rate for each area. A transfer speed identification means capable of identifying a transfer speed of data to be recorded in the hard disk drive, and a transfer speed of the data identified by the transfer speed identification means and a capacity of the data. And a means for selecting an area for storing the data in the hard disk drive. 5. A data recording system comprising a hard disk drive having a plurality of areas each having a predetermined recording capacity and having a different data transfer rate for each area. An apparatus, which is a memory that is read from and written to by a processor, a data sending circuit that sends data in the memory to each area of the hard disk drive, a data receiving circuit that reads data from the area, and the memory The data transfer rate of each area is compared from the maximum speed when both data match and the minimum speed when both data do not match. And a transfer rate identification means capable of identifying the transfer rate of the data to be recorded in the hard disk drive, and the transfer A data recording device having means for selecting an area for storing the data in the hard disk drive according to the transfer rate of the data identified by the rate identifying means and the capacity of the data. 6. A data recording system comprising a hard disk drive having a plurality of areas each having a predetermined recording capacity and having a different data transfer rate for each area. A device, a test data creating circuit, a data sending circuit for sending the test data created by the test data creating circuit to each area of the hard disk drive, and a data receiving circuit for reading data from the area And a data comparison circuit that compares the test data created by the test data creation circuit with the data received by the data reception circuit, and the maximum speed and both data when both data match in this data comparison circuit. Means for obtaining the data transfer rate of each area from the minimum rate when the two do not match, and the hard disk In the hard disk drive, the transfer speed identification means capable of identifying the transfer speed of the data to be recorded in the drive and the transfer speed of the data identified by the transfer speed identification means A data recording device having means for selecting an area for storing data. 7. A data recording device, wherein a plurality of hard disk drives having different data transfer rates coexist to form a system, the first hard disk drive for temporary recording, A second hard disk drive for data storage having a data transfer rate lower than that of the first hard disk drive is provided, and the data to be recorded is written to the first hard disk drive. Then, the first hard disk drive is configured to be copyable from the second hard disk drive, and the data to be read is read from the second hard disk drive to the first hard disk drive. A data recording device which is configured to be readable from the first hard disk drive after being copied to. 8. A memory that is read from and written to by a processor, a data sending circuit that sends data in the memory to each hard disk drive, a data receiving circuit that reads data from the hard disk drive, and Compare the data sent from the memory to each hard disk drive and the data read from that hard disk drive, and compare the maximum speed when both data match and the minimum speed when both data do not match. From the means for obtaining the data transfer rate of each hard disk drive, and the result of obtaining the data transfer rate of each hard disk drive, the first hard disk drive for temporary recording and the data storage 8. A data storage device according to claim 7, further comprising means for selecting a second hard disk drive for Recording device. 9. A test data creation circuit and test data created by the test data creation circuit for each hardware.
A data sending circuit for sending to the disk drive, a data receiving circuit for reading data from the hard disk drive, a test data created by the test data creating circuit, and data received by the data receiving circuit. A means for obtaining the data transfer rate of each hard disk drive from the data comparison circuit to be compared and the maximum speed when both data match and the minimum speed when both data do not match in this data comparison circuit. , A means for selecting the first hard disk drive for temporary recording and the second hard disk drive for data storage from the result of obtaining the data transfer rate of each hard disk drive. The data recording device according to claim 7, which has.