JP2003099277A - Method and device for storing data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for automatically selecting 1st and 2nd pieces of data from a ROM in which the 1st and 2nd data are stored and storing them in a rewritable ROM. SOLUTION: A discrimination part 4 discriminates that a driving system 30 has no electronic expansion valve and informs a CPU 3 of that. The CPU 3 selects data suitable for control over the driving system 30a out of data stored in the ROM 1 and stores them in the EEPROM 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for storing first and second data in a selectively rewritable ROM.

[0002]

2. Description of the Related Art In the technique of controlling the operation of equipment by a microcomputer, a CPU (Central Proc.
essingUnit) performs the control. The data is ROM
(Read Only Memory), the CPU reads the RO
Control the operation of the device using the required data from M.

However, even if the models to be controlled are different, the technique for facilitating the design and manufacture of the control subject has been implemented by adopting the same structure for the above-mentioned control subject.

FIG. 10 and FIG. 11 are block diagrams showing a conventional technique, showing an air conditioner as an example. The air conditioner 100a shown in FIG. 10 includes an electronic circuit 21, which is commonly referred to as a P plate, and a drive system 30a that performs compression and heat exchange of the refrigerant. The air conditioner 100b shown in FIG. 11 includes an electronic circuit 21 and a drive system 30b. Unlike the drive system 30a, the drive system 30b includes an electronic expansion valve EV.

The electronic circuit 21 has a control section 5 and an integrated circuit 10 which gives instructions to the control section 5. And
Drive system 30a not equipped with electronic expansion valve EV, electronic expansion valve E
The control unit 5 and the integrated circuit 10 having the same configuration are used for any control of the drive system 30b including V. That is, the control unit 5 directly controls both of the drive systems 30a and 30b, and the integrated circuit 10 indirectly controls both of the drive systems 30a and 30b.

The integrated circuit 11 is a rewritable EEPR.
OM (Electrically Erasable Programmable ROM) 2
And a CPU 3. The CPU 3 issues the above-mentioned instruction to the control unit 5. The command is of course the electronic expansion valve E
Depending on the presence or absence of V, the air conditioner 100a and the air conditioner 100b are different. Therefore, the data on which the operation of the CPU 3 depends depends on whether the electronic circuit 21 is installed in the air conditioner 100a or in the air conditioner 100b, and its initial value (in this specification, “initial data”). And) are different.

However, two different data to be stored as initial data in the EEPROM 2 are stored in the electronic circuit 21.
Can be installed in the air conditioner 100a and in the case where it is installed in the air conditioner 100b, and the configuration of the electronic circuit 21 can be the same in both cases by appropriately selecting and storing in the EEPROM 2.

ROM for storing data on which the operation of the CPU 3 depends
It is preferable to store in the EEPROM 2 instead of storing the desired setting by the user while using the air conditioners 100a and 100b.

[0009]

However, in the prior art, the initial data of the EEPROM 2 is the air conditioner 1
The distinction between 00a and 100b was manually determined, and writing was performed by communication from an external device. This requires a great deal of labor at the time of initial setting of the electronic circuit 21 or the air conditioners 100a and 100b in which the electronic circuit 21 is mounted.

In addition, once the air conditioners 100a, 100
An electronic circuit 21 having an EEPROM 2 incorporated in b and having the initial data EEA or EEB written therein
Are difficult to be used as spare parts for the other air conditioners 100b and 100a, respectively.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a technique for automatically selecting the first and second data and storing the same in a rewritable ROM.

[0012]

[Means for Solving the Problems] Claim 1 of the present invention
The above is a data storage method of storing data for controlling the operation of the devices (100c, 100d) in the rewritable ROM (2), and (a) the device has a predetermined part (EV). Step of determining whether or not to do (S5)
And (b) from the ROM (1) storing the first and second data (EEA, EEB), the first and second data are selectively selected based on the judgment result of the step (a). To store in the rewritable ROM (S6, S7)
With.

According to claim 2 of the present invention,
The data storage method according to claim 1, wherein the rewritable ROM is (c) prior to the step (a).
Step (S1) of determining whether (2) can be formatted
And (d) after the step (S2) and (e) the step (c) of setting the automatic mode for automatically determining the model of the device when the rewritable ROM can be formatted. Then, a step (S4) of determining whether the automatic mode is set is further provided. And the said process (a) and the said process (b) are performed when the said automatic mode is set.

According to claim 3 of the present invention,
The data storage method according to claim 2, wherein in step (d), common data to be stored in the rewritable ROM in common whether or not a predetermined component exists in the device. Storing (COM) from the ROM in the rewritable ROM is included (S2).

According to claim 4 of the present invention,
4. The data storage method according to claim 3, wherein the common data includes determination mode data (D) indicating a determination mode for the model of the device, and in the step (e),
The determination is made based on whether or not the determination mode data represents the automatic mode.

According to claim 5 of the present invention,
The data storage method according to any one of claims 3 and 4, wherein in the step (c), the determination is made based on the presence or absence of the common data (COM).

According to claim 6 of the present invention,
The data storage method according to any one of claims 1 to 5, wherein (f) after step (b), regardless of the determination result of step (a), the first and The method further comprises the step of selectively storing the second data in the rewritable ROM (S9, S10, S11, S12).

According to claim 7 of the present invention,
7. The data storage method according to claim 2, wherein the step (d) stores the first data from the ROM in the rewritable ROM (S3). ) Has.

According to claim 8 of the present invention,
ROM storing first and second data (EEA, EEB) for controlling the operation of the device (100c, 100d)
(1) and the data storage method according to any one of claims 1 to 7, wherein the first and second data are selectively stored in the ROM according to the type of the device. A data storage device (10, 20) comprising a rewritable ROM (2) to be stored and a processing unit (3) for controlling the operation of the device based on the data stored in the rewritable ROM. .

According to claim 9 of the present invention,
The data storage device (20) according to claim 8, further comprising: a determination unit (4) that determines whether or not the predetermined component (EV) is present and gives the determination result to the processing unit. Then, the processing section alternatively stores the first and second data from the ROM into the rewritable ROM based on the determination result.

According to a tenth aspect of the present invention, the first aspect of the present invention controls the operation of the device (100c, 100d).
And ROM for storing second data (EEA, EEB)
(1), a rewritable ROM (2) in which the first and second data are alternatively stored from the ROM according to the type of the device, and data stored in the rewritable ROM A data storage device (10, 20) including a processing unit (3) for controlling the operation of the device based on the above.

[0022]

1 and 2 are block diagrams illustrating an air conditioner as one of the embodiments of the present invention. The air conditioner 100c shown in FIG. 1 includes an electronic circuit 20 that is a P plate, and the drive system 30a described for the air conditioner 100a in FIG. Electronic circuit 20
Includes a determination unit 4, an integrated circuit 10, and a control unit 5 described for the air conditioner 100a in FIG.

The integrated circuit 10 includes a ROM 1 and an EEPROM
2 has a CPU 3. The CPU 3 gives a command to the control unit 5. The operation of the CPU 3 depends on the data stored in the EEPROM 2.

In the ROM 1, the electronic circuit 20 has an air conditioner 1
00c and the air conditioner 100d, the common data COM required for the operation of the CPU 3 and the electronic circuit 20 are necessary when the air conditioner 100c is mounted. Initial data EEA and electronic circuit 21 which are not necessary when mounted on the air conditioner 100d
Stores the initial data EEB which is not required when being installed in the air conditioner 100c and is required when being installed in the air conditioner 100d.

The discriminating section 4 discriminates whether or not the electronic expansion valve EV is present in the drive system of the air conditioner in which the electronic circuit 20 is mounted, and gives the discrimination result to the CPU 3. In FIG. 1, the drive system 30a is indicated by a broken line without the electronic expansion valve EV. On the other hand, the air conditioner 100d shown in FIG. 2 includes the electronic circuit 20 and the drive system 30b described for the air conditioner 100b in FIG. Therefore, the determination unit 4 determines that the electronic expansion valve EV does not exist when the electronic circuit 20 included in the determination unit 4 is installed in the air conditioner 100c.
The CPU 3 is made aware that the electronic expansion valve EV is present when it is mounted in 0d. In response to this, the CPU 3 changes the ROM 2 from the ROM 1 to the EEPROM 2
Select and store three initial data.

In this embodiment, as described above, the initial data EEA, EEB are stored in advance in the ROM 1, and the initial data EEA, EE are based on the determination result of the device type.
Alternatively, B can be automatically stored in the electronic circuit 20 from the ROM 1 to the EEPROM 2. And the control unit 5
Receives an instruction from the CPU 3 which operates based on the data stored in the EEPROM 2, and controls the operation of the drive systems 30a and 30b. Therefore, even if there are a plurality of types of devices, the electronic circuit 20 can be designed and manufactured with one type of configuration.

The electronic expansion valve E is used to determine the type of equipment.
The result of determining the presence or absence of V is used. A technique for determining the presence or absence of the electronic expansion valve EV is known, and is disclosed in, for example, Japanese Patent Laid-Open No. 2-26
It is introduced in Japanese Patent No. 7482.

3 and 4 are flowcharts showing the data storage method according to the present embodiment, and the flowcharts shown in both figures can be connected to each other via a connector J. Each can also function as an independent flow chart.

Air conditioner 100 equipped with electronic circuit 20
The electronic circuit 20 is also energized when the power of the c or the air conditioner 100d is turned on. Then, in step S1, it is determined whether or not a condition (format condition) that enables the formatting of the EEPROM 2 is satisfied. For example, immediately after manufacturing, nothing is written in the EEPROM 2 and the format condition is satisfied. In that case, the process proceeds to step S2 through the route marked with "Y" in the figure, and the common data COM is stored in the ROM1.
From EEPROM to EEPROM 2.

FIG. 5 is a schematic diagram showing how step S2 is executed. ROM1 is a memory space area 1
a, 1b, 1c, each of which has initial data EE
It stores A, EEB and common data COM. Then, in step S2, the common data CO
M is written in the area 2c of the EEPROM 2. To reduce the amount of data stored in the ROM 1 by setting common data COM commonly used for both the air conditioner 100c having no electronic expansion valve and the air conditioner 100d having an electronic expansion valve. You can

In addition to the conventional technique, the common data COM further includes determination mode data D indicating the mode of determination regarding the model of the air conditioner. The determination mode data D stored in the area 2c in step S2 indicates that the determination mode is “automatic”.

After the execution of step S2, initial data EEA is written from ROM1 to EEPROM2 as a default in step S3. FIG. 6 shows step S3
It is a schematic diagram which shows a mode that is performed. Initial data EEA is written from the area 1a to the area 2d of the EEPROM 2.

Initial data EEB may be written from ROM1 to EEPROM2 as a default. In that case, as schematically shown in FIG. 7, the initial data EEB is written from the area 1b to the area 2d. As a result, the contents to be stored in the EEPROM 2 are temporarily determined.

After step S3 is executed, the processing flow reaches the connector J. After steps S1, S2 and S3 have been executed, the electronic circuit 20 can be detached from the air conditioners 100c and 100d and shipped from the factory as an electronic circuit 20 equipped with the formatted EEPROM 2 for distribution. In order to execute steps S1, S2 and S3 for factory shipment, the electronic circuit 20 is installed in the air conditioner 100c, 1
00d need not be mounted, and power may be supplied to the electronic circuit 20 itself in a manufacturing line for manufacturing the electronic circuit 20.

In the manufacturing line for manufacturing the air conditioners 100c and 100d, steps S1, S2 and S3 are performed.
The assembly is performed using the electronic circuit 20 that has been executed.
Then, when the air conditioners 100c and 100d are powered on, the electronic circuit 20 is also energized. The electronic circuit 20 has already received the common data COM in step S2.
Is written. Therefore, it is not necessary to format the electronic circuit 20 again and it is not necessary to execute steps S2 and S3.

Since steps S2 and S3 are not executed,
In step S1, a determination is made based on the presence or absence of the common data COM. As a result, the EEPROM 2 provided in the electronic circuit 20 has already been read once in steps S1, S2, S.
It is possible to judge whether or not the EEPROM 3 has been executed.

When it is determined in step S1 that the format condition is not satisfied in the electronic circuit 20, the process proceeds to step S4 through the route marked "N" in the figure, and the determination of the model of the air conditioner is made. It is determined whether the mode is "automatic". For example, if the electronic circuit 20 has just been shipped from the factory, the determination mode data D is included in the common data COM in step S2.
Moreover, since the determination mode data D indicates that the determination mode is "automatic", the process proceeds to step S5 through the route marked "Y" in the figure. Note that step S
The case where a negative judgment is made in 4 will be described later, and the explanation here is reserved.

In step S5, the determination unit 4 determines whether the electronic expansion valve EV is present, and the determination result is the CPU.
3 is transmitted. If there is no electronic expansion valve EV, the process proceeds to step S6 through the route marked "N" in the figure. In this case, since the air conditioner 100c in which the electronic circuit 20 is mounted includes the drive system 30a,
As shown in FIG. 6, initial data EEA, which is data suitable for controlling the drive system 30a, is transferred from ROM1 to EEPROM.
Store to 2. This operation can be performed by the control of the CPU 3 obtained from the determination unit 4 that the electronic expansion valve EV does not exist.

On the other hand, when the electronic expansion valve EV is present, the process proceeds to step S7 through the path marked "Y" in the figure. In this case, since the air conditioner 100d in which the electronic circuit 20 is mounted is provided with the drive system 30b, as shown in FIG. 7, the initial data EEB, which is data suitable for controlling the drive system 30b, is stored in the ROM1. To EEPR
Store in OM2. This operation can be performed by the control of the CPU 3 obtained from the determination unit 4 that the electronic expansion valve EV is present.

The integrated circuit 10 having the EEPROM 2 and the electronic circuit 20 after the step S6 or step S7 is executed is the air conditioner 100c on which the integrated circuit 10 is mounted.
Alternatively, it is set to a state suitable for the air conditioner 100d.

In this way, in step S5, it is determined whether or not the electronic expansion valve EV is present, and the type of equipment is determined using the determination result. Based on the result of this determination, the initial data EEA and EEB are stored in the ROM1 to the EEPROM2 in steps S6 and S7, respectively. This storage is alternative for the initial data EEA, EEB and is done automatically. Before step S4 is executed, the determination mode is set to "automatic" in step S2, and the alternative data is automatically stored in the EEPROM. Note that the determination mode can be set to "automatic" also in step S8 described below.

Moreover, it is judged in step S4 whether or not the judgment mode is "automatic" by using the judgment mode data D written in the EEPROM 2 in step S2.
It is easy to set the mode of automatically determining the model of the device.

After the processing flow reaches the connector J from step S4 or from step S6 or step S7, the air conditioners 100c and 100d are distributed for factory shipment or change of installation location. It is also desirable to set new initial data at the site where these are installed.

On-site air conditioners 100c, 100
When d is powered on, the flow chart shown in FIG. 3 is executed, and then step S of FIG.
Go to 8. In step S8, the local setting process of the EEPROM 2 is performed. In this process, the determination mode is set to "automatic", or the drive system 30a is forcibly determined to be the air conditioner 100c in which the drive system 30a is mounted,
The air conditioner 100d is installed. Specifically, for example, the determination mode data D is rewritten, and the CP is changed based on the rewritten determination mode data D.
The operation of U3 ignores the determination result of the determination unit 4 and forcibly determines the model, and determines the type of data to be stored in the area 2d.

From step S8 to step S9,
It is determined whether or not the model determination setting is forcibly set to the air conditioner 100d. For example, in step S8, if the model determination setting is forcibly set to the air conditioner 100d, the process proceeds from step S9 to the step S10 through the route marked with "Y" in the figure. The initial data EEB suitable for the air conditioner 100d is EEPROM2.
Written in.

FIG. 8 is a diagram schematically showing an example of the operation of step S10. FIG. 9 (i) shows the state of the EEPROM 2 in which the initial data EEA has already been written in the area 2d in step S3 or step S6.
(i) shows a state in which the step S10 is executed for the EEPROM 2 in the state shown in (i) and the initial data EEB is written. However, in the figure (i), the symbol D
Indicates that the determination mode data D has been written in step S2 and has not been changed, and the symbol D'in FIG. 7 (ii) indicates that the content of the determination mode data D in step S8 changes from "automatic" to "air conditioner". It has been changed to "100d".

If a negative determination is made in step S9, the process proceeds from step S9 through the route marked "N" in the figure to step S11. Step S11
Then, it is determined whether or not the model determination setting is forcibly set to the air conditioner 100c. For example, in step S8, if the model determination setting is forcibly set to the air conditioner 100c, the process proceeds from step S11 to the step S12 through the route marked with "Y" in the figure. And the initial data EEA suitable for the air conditioner 100c is EEPRO.
Written to M2. If a negative determination is made in step S11, the process proceeds from step S11 to the step S13 through the route marked "N" in the figure.

As described above, by executing the flow chart shown in FIG. 4, the contents of the EEPROM 2 that have been once automatically set can be manually set again, so that the air conditioners 100c and 100d can be operated. It is possible to flexibly deal with changes in the installation site.

It should be noted that, as is clear from the above-described processing, the order of the pair of steps S9 and S10 and the pair of steps S11 and S12 can be interchanged.

In step S13, processing other than the initial setting of the EEPROM 2, for example, temperature setting of the air conditioner and wind direction setting are performed. However, the various amounts set in this way can be stored in the EEPROM 2, for example, in the area 2d as user setting parameters in step S13.

Thereafter, if it is determined in step S14 that the power supply is off, the flow chart ends through the route marked with "Y" in the figure. If the power is not off, go through the path marked "N" in the figure, and go to step S
Proceed to 15.

In step S15, it is determined whether or not to change the model determination setting. When changing, the process returns to step S8 through the route marked with "Y" in the figure. If the model determination setting is not changed, the process returns to step S13.

After the power is turned off as described above, the EEP
ROM2 has been set up locally. However, there are cases where it is desired to further change the contents stored in the EEPROM 2 locally after the power is turned off. FIG. 9 is a schematic view illustrating such a case. The electronic circuit 20 was once mounted in the air conditioner 100c, but after that, the air conditioner 10
The case applied to 0d is shown in FIG. In such a case, step S7 or step S10 needs to be executed again.

Even when the electronic circuit 20 equipped with the EEPROM 2 once mounted on the air conditioner 100c and having the settings suitable for the air conditioner 100c is subsequently supplemented to the air conditioner 100d and turned on, FIG. 4 can be adopted. First, for step S1, EEPR
Since OM2 is set for the air conditioner 100c,
A negative determination is made, and the process proceeds to step S4.

The EEPR mounted on the air conditioner 100c
If step S12 is executed when the OM2 receives the setting, a negative determination is made also in step S4,
To connector J (this case corresponds to the case where the above description is reserved). Then, through the connector J, step S8
Proceed to, and forcibly set the model determination setting here.
0d. As a result, the process proceeds from step S9 to step S10, and the initial data EEB is written.

On the other hand, when mounted on the air conditioner 100c, E
When the EPROM 2 receives the setting, step S6 is executed, and if step S12 is not executed thereafter,
A positive determination is made in step S4. This corresponds to, for example, the case where the content of the determination mode data D remains "automatic" in step S8 after step S6 is executed. Then, the process proceeds from step S5 to step S7, and the initial data EEB is written.

Alternatively, the electronic circuit 20 is shipped from the factory,
The flow charts of FIGS. 3 and 4 can also be adopted when this is used alone as a spare part in the field. This is because by executing step S3, the EEPROM 2 included in the electronic circuit 20 is set to be suitable for the air conditioner 100c upon shipment from the factory.

When the determination mode is "automatic", the determination unit 4 does not need to be limited to the electronic expansion valve EV as the determination target in Step S5. Obviously, other parts may be used, and the realization thereof is easy. It is also clear that the invention can be applied to equipment other than the air conditioner.

[0059]

According to the data storage method of the first aspect of the present invention and the data storage device of the eighth to ninth aspects, the first aspect of the present invention is based on whether or not a predetermined component is present. And the second data are alternatively stored in the rewritable ROM, so that the contents of the rewritable ROM are automatically set corresponding to different models depending on whether or not a predetermined component exists. be able to.

According to the data storage method of the second aspect of the present invention, the automatic mode can be set so that the steps (a) and (b) can be executed when the rewritable ROM can be formatted. .

According to the data storage method of the third aspect of the present invention, by setting the common data commonly used for the model having the predetermined component and the model having no predetermined component. The amount of data stored in the ROM can be reduced.

According to the data storage method of the fourth aspect of the present invention, it is possible to easily set the automatic mode for automatically determining the model of the device.

According to the data storage method of the fifth aspect of the present invention, since the common data is written in the step (d-1), whether or not the writable ROM has already been subjected to the data storage method once. You can judge.

According to the data storing method of the sixth aspect of the present invention, the automatically set rewritable R
Since the contents of the OM can be manually set again, it is possible to flexibly deal with changes at the site where the equipment is installed.

According to the data storage method of the seventh aspect of the present invention, the contents to be stored in the rewritable ROM are tentatively determined.

According to the data storage device of the tenth aspect of the present invention, since the first and second data are alternatively stored in the rewritable ROM, the rewriting can be performed corresponding to different models. Possible ROM contents can be set automatically.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating an air conditioner as one of embodiments of the present invention.

FIG. 2 is a block diagram illustrating an air conditioner as one of the embodiments of the present invention.

FIG. 3 is a flowchart showing a data storage technique according to the present invention.

FIG. 4 is a flowchart showing a data storage technique according to the present invention.

FIG. 5 is a schematic diagram showing a data storage technique according to the present invention.

FIG. 6 is a schematic diagram showing a data storage technique according to the present invention.

FIG. 7 is a schematic diagram showing a data storage technique according to the present invention.

FIG. 8 is a schematic diagram showing a data storage technique according to the present invention.

FIG. 9 is a schematic diagram showing an effect of the present invention.

FIG. 10 is a block diagram showing a conventional technique.

FIG. 11 is a block diagram showing a conventional technique.

[Explanation of symbols]

1 ROM 2 EEPROM 3 CPU 4 Discriminator 10 integrated circuits 20 electronic circuits 100c, 100d Air conditioner COM common data D judgment mode data EEA, EEB initial data

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuhiko Yamamoto             1304 Kanaoka-cho, Sakai City, Osaka Prefecture Daikin Industries             Sakai Plant Kanaoka Factory F-term (reference) 3L061 BA07                 5B076 BA01 BA05 EB02

Claims (10)

[Claims] 1. A method for storing data for controlling the operation of a device (100c, 100d) in a rewritable ROM (2), comprising: (a) whether the device has a predetermined component (EV). A step (S5) of judging whether or not the first and second data (EEA, EEB) are stored in the ROM (1) based on the judgment result of the step (a). And a step (S6, S7) of selectively storing the second data in the rewritable ROM. 2. (c) Prior to the step (a), a step (S1) of determining whether the rewritable ROM (2) can be formatted, and (d) the rewritable ROM is formatted. If possible, a step (S2) of automatically setting the type of the device to automatically determine, and (e) whether the automatic mode is set after the step (c). The data storage method according to claim 1, further comprising a step (S4) of making a determination, wherein the step (a) and the step (b) are executed when the automatic mode is set. 3. The common data (CO) to be stored in the rewritable ROM is commonly used in the step (d) regardless of whether or not a predetermined component is present in the device.
The data storage method according to claim 2, further comprising a step (S2) of storing M) from the ROM in the rewritable ROM. 4. The common data includes determination mode data (D) indicating a determination mode for the model of the device, and in the step (e), whether the determination mode data represents the automatic mode. The data storage method according to claim 3, wherein the determination is performed based on 5. In the step (c), the judgment is made based on the presence or absence of the common data (COM).
The data storage method according to any one of claims 3 and 4. 6. (f) After the step (b), regardless of the judgment result of the step (a), the first and second data are alternatively stored in the rewritable ROM. The data storage method according to any one of claims 1 to 5, further comprising a step (S9, S10, S11, S12) of performing. 7. The method according to claim 2, wherein the step (d) includes a step (S3) of storing the first data from the ROM into the rewritable ROM. Described data storage method. 8. A ROM (1) for storing first and second data (EEA, EEB) for controlling an operation of a device (100c, 100d), and the ROM (1) according to any one of claims 1 to 7. A rewritable ROM (2) in which the first and second data are alternatively stored from the ROM according to the type of the device using the data storage method described, and the rewritable ROM A data storage device (10, 20) comprising: a processing unit (3) for controlling the operation of the device based on the stored data. 9. A discriminating unit (4) for discriminating whether or not the predetermined component (EV) is present and for giving the discrimination result to the processing unit, wherein the processing unit is based on the discrimination result. 9. The data storage device (20) according to claim 8, wherein the first and second data are alternatively stored from the ROM to the rewritable ROM. 10. A ROM (1) storing first and second data (EEA, EEB) for controlling the operation of the device (100c, 100d), and the first and second ROMs according to the type of the device. Rewritable ROM in which the data of the
A data storage device (10, 20) comprising: (2) and a processing unit (3) that controls the operation of the device based on the data stored in the rewritable ROM.