JP2003108508A - Computer peripheral equipment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a computer peripheral equipment system capable of renewing, by easy operation of an end user, rewritable control programs respectively mounted on a computer peripheral device and an IF converter which executes I/F conversion between a computer and the computer peripheral device. SOLUTION: Both the control program for the PC peripheral device 2 and the control program for the I/F converter 1 are written in a memory 22 of the PC peripheral device 2 by one control program renewing tool 33 on a PC 3. A loader program 13 of the I/F converter 1 compares version information on the control program for the I/F converter written in the memory 22 at each starting time, with version information on the control program 10 on a memory 12, and acquires the control program for the I/F converter from the memory 22 when these pieces of information are different, and writes the program in an area of the control program 10 in the memory 12.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a computer peripheral device connected to a computer and an interface (I / I) between the computer and the computer peripheral device.
F) A computer peripheral device system that includes an I / F conversion device that performs conversion, and each of these devices implements a rewritable control program, and in particular, the control program can be easily updated from a computer. Related to computer peripheral system.

[0002]

2. Description of the Related Art In recent years, hard disk drives and DVDs
-RAM drive, CD-ROM drive, CD-RW
PC peripheral devices such as a drive, a DVD-ROM drive, and a MO drive adopt the serial bus interface such as IEEE 1394 or USB standard as an interface, and many devices are commercialized as external products to the PC.

Many of these products have a drive having an IDE interface or the like, which has already been commercialized as a PC built-in product, and an IDE interface or the like IEEE1.
It has a configuration in which an I / F conversion device for converting into 394 or a USB interface is added.

Among these, according to the IEEE 1394 standard, 4
High-speed communication of 00 Mbit / sec and addition and removal of devices with the power turned on are supported in consideration of general users' usage conditions.

Further, regardless of the type of interface,
The control programs in the PC peripheral device products necessary for operating the PC peripheral device products are often supported so that they can be updated by the end user when a failure occurs in the market. In the case of a product having a configuration in which the interface is converted by the I / F conversion device when this problem occurs, it is often necessary to update the control program in the I / F conversion device at the same time.

FIG. 5 shows an example of a conventional system configuration.

The I / F converter 100 is connected to a personal computer (hereinafter referred to as a PC) 300 by an external serial bus 108 (IEEE1394 bus or the like),
A PC peripheral device 200 (DVD-RAM having an IDE interface) by an internal bus 106 (IDE bus or the like)
Drive etc.).

The I / F converter 100 includes a CPU (Central Processing Unit) 101, a memory 102, an internal bus interface (hereinafter referred to as an internal bus I / F) 105, an external serial bus interface (hereinafter referred to as an external serial bus I).
/ F) 107 and a control system LSI 109.

A control program 103 and a loader program 104 are stored in the memory 102 of the I / F converter 100.
There are two programs. Control program 103
Is an external serial bus I / F control function and an internal bus I / F
It has a control function, and this function controls the bus conversion between the external serial bus and the internal bus. Loader program 1
Reference numeral 04 has a function of rewriting the control program 103, and the external serial bus I required at the time of rewriting.
/ F control function.

The PC peripheral device 200 includes a CPU 201, a memory 202, an internal bus I / F 203 and a control system LSI 20.
It is composed of four.

The memory 102 and the memory 202 have EEP
An erasable / writable non-volatile memory such as a ROM or a flash memory is used, and both the I / F conversion device 100 and the PC peripheral device 200 can update the control program by an operation from the PC 300.

When transferring data from the PC 300 to the PC peripheral device 200, the I / F conversion device 100 receives data in the external serial bus standard format from the PC 300 by the external serial bus I / F 107, and receives the data in the internal bus standard format. Data of the internal bus standard format is sent to the PC peripheral device 200 by the internal bus I / F 105. Similarly, when transferring data from the PC peripheral device 200 to the PC 300, I / O
The F conversion device 100 uses the internal bus I / F 105 for P conversion.
The data in the internal bus standard format is received from the C peripheral device 200, the data is converted into the data in the external serial bus standard format, and the external serial bus I / F 107 is connected.
Sends data in the external serial bus standard format to the PC 300.

Before the above configuration was established, a PC built-in product having a configuration in which it was directly connected to a PC through an interface of a PC peripheral device was commercialized. Further, a form in which a control program for a PC peripheral device is updated by a control program update tool on the PC that uses the interface standard of the PC peripheral device has been established and commercialized. Through this system configuration and configuration, I /
In the system configuration in which the F conversion device 100 is added, I
The control program update of the A / F conversion device 100 and the PC peripheral device 200 is performed by the (i) PC peripheral device 200 so as to minimize the change of the control program of the PC peripheral device and the control program update tool that were previously established. A control program update tool using the internal bus I / F 203 standard and (ii) a control program update tool using the external serial bus I / F 107 standard used when the I / F conversion device 100 is connected to the PC 300. By using two tools, the I / F conversion device 100 and the PC peripheral device 2
The method of separately rewriting the two memories of 00 was adopted.

Referring to FIG. 6, the I / F converter 100 and P
A conventional procedure for separately rewriting the two memories of the C peripheral device 200 will be described.

A control program for an I / F converter provided from the Internet or the like is prepared on the PC 300,
The control program is updated by the I / F conversion device control program update tool 301 on the PC 300 to the PC 300.
To the I / F conversion device 100.

At this time, in the I / F conversion device 100, the loader program 104 is driven and the loader program 1
04 by the external serial bus I / F control function
Communicates with C300 and P via external serial bus 108
The control program for the I / F converter is acquired from C300, and the acquired control program is written in the area of the control program 103 in the memory 102.

Similarly, for updating the control program of the PC peripheral device 200, a control program for the PC peripheral device provided from the Internet or the like is prepared on the PC 300 and
PC peripheral device control program update tool 3 on 300
02 is used.

At this time, in the I / F converter 100, the control program 103 is driven, and by the bus conversion control function using the external serial bus I / F control function and the internal bus I / F control function of the control program 103, Each P
Communicate with C300 and PC peripheral device 200.

[0019]

As described above, the I / F
In order to update the control programs of the conversion device 100 and the PC peripheral device 200, the I / F conversion device control program update tool 301 and the PC peripheral device control program update tool 302 are required, respectively. Normally, since the I / F conversion device 100 and the PC peripheral device 200 are packaged together and commercialized, the end user can use the PC peripheral device 200 without being aware of the existence of the I / F conversion device 100. Therefore, it may be confusing for the end user to update the control program of the I / F conversion device 100. In addition, the I / F conversion device 100 and the PC peripheral device 200
There is also a problem that it is inconvenient for the end user to perform both control program updates using the two control program update tools.

As a method of reducing the operation load of the end user, simply, the control program update tool for the I / F converter using the standard of the external serial bus I / F and the standard of the internal bus I / F are used. Rather than using the two tools of the PC peripheral device control program update tool using the above, one new tool using one of the standards allows one end user to operate the I / O from the PC.
Updating the control program of the F converter and PC to PC
It may be possible to update the control program of the peripheral device, but this method has many technical difficulties such as enormous program capacity of the tool and the I / F conversion device.

Therefore, an object of the present invention is to provide a computer peripheral device system which enables an end user to update the control programs of both the I / F conversion device and the PC peripheral device by a simple operation.

[0022]

In order to achieve the above-mentioned object, a computer peripheral device system according to the present invention is a computer peripheral device system connected to a computer and has an interface different from that of the computer. And at least one computer peripheral device that operates according to the computer peripheral device control program, and an interface conversion device that operates according to the interface conversion device control program and performs interface conversion between the computer and the computer peripheral device. A first one of the computer peripheral device and the interface conversion device
Update for storing a new computer peripheral device control program and interface conversion device control program given via the computer when updating the computer peripheral device control program and interface conversion device control program in the memory of the device Program updating means for writing the device control program extracted from the update program storage area into a memory of a device other than the first device on the computer peripheral device system, the program updating means having a program storage area. One of the device and the interface conversion device is provided.

This computer peripheral device system may be configured as hardware of one housing containing a computer peripheral device and an interface conversion device, or may be configured by connecting these devices with cables or the like. May be. Alternatively, a form built in a computer is also possible. Further, the computer peripheral device control program and the interface conversion device control program may control all the operations of these respective devices, or may control only a part of the operations. Further, each of the computer peripheral device control program and the interface conversion device control program may be one program file or may be composed of a plurality of program groups. The update program storage area may be at least logically recognized as one area when a new control program is written from the computer, and does not necessarily have to be a physically continuous storage area.

According to the above configuration, when updating the control programs for the computer peripheral device and the interface conversion device, all of the new control programs are updated from the computer to one of the computer peripheral device and the interface conversion device. After writing once in the update program storage area provided in the memory of the single device, the program update means, for each memory of the device other than the device having this update program storage area,
By writing the new control program extracted from the update program storage area, the control program of each device is updated to the new control program.

That is, in the past, the end user had to individually update the new control program from the computer to each of the computer peripheral device and the interface conversion device. Is a computer that does not consider all of the new control programs distributed by a communication means such as the Internet or a storage medium such as a CD-ROM, whether it is a computer peripheral device or an interface conversion device. Need only be written in one place (update program storage area) using. Then, the updating of the control program in each device is executed by the program updating means as described above. This makes it possible to provide a computer peripheral device system that allows the end user to update the control programs of both the interface conversion device and the computer peripheral device with a simple operation.

In the computer peripheral device system, version information of a new computer peripheral device control program or interface conversion device control program stored in the update program storage area,
By comparing the version information of the computer peripheral device control program or the interface conversion device control program stored in the memory of the device other than the first device on the computer peripheral device system, It is preferable to further include an update determination unit that determines whether or not the update is necessary.

In this configuration, for example, only when the version of the new control program written in the update program storage area from the computer is different from the version of the control program installed in the memory of each device,
The update determination means determines that the device control program needs to be updated, and instructs the program update means to update the control program. As a result, the program updating means can measure the update timing of the control program irrespective of the operation of the end user, and can prevent unnecessary rewriting of the control program.

Further, in the above-mentioned preferable configuration, it is more preferable that the update judging means is activated each time the computer peripheral device or the interface converting device having the update judging means is activated. This allows
When the computer peripheral device or the interface conversion device is turned on or restarted by a reset, the update determination means determines whether the control program needs to be updated, and if necessary, the program update means executes the update.
The control program can be updated to a new version at the right time.

In the computer peripheral device system, at least one of the devices other than the first device on the computer peripheral device system is IEEE1394.
It has an interface, and the update determination means is IEEE
It is preferable to use, as the version information, device-specific information that is specified in the control program according to the E1394 standard. According to this configuration, since it is not necessary to add version information to a new control program, the number of man-hours for version information correction and the memory capacity can be reduced, and the cost can be suppressed.

Further, in the computer peripheral device system, it is preferable that the first device is the computer peripheral device and the program updating means is provided in the interface conversion device.

According to this structure, the interface control when writing a new program from the computer to the update program storage area provided in the computer peripheral device is executed by the control program of the old version installed in the interface conversion device. It When the program update means provided in the interface conversion device acquires a new version of the control program from another device, that is, a computer peripheral device, the program update means performs interface control with respect to the interface conversion device and the computer. It is sufficient to have only the function of controlling the internal interface with the peripheral device, and not the function of controlling the external interface with the computer. Therefore, the structure of the program updating means can be simplified and the cost can be suppressed.

Further, it is preferable that the computer peripheral device system further comprises display means for indicating that the program updating means is in a writing operation while writing the control program. With this configuration, it is possible to notify the user that the control program is being updated.

In the computer peripheral device system, while the program updating means is writing the control program, the interface conversion device disables the interface function with the computer, so that the computer It is preferable to prohibit access to the computer peripheral device. According to this configuration, the computer does not access the computer peripheral device while the control program is being updated, and abnormal communication can be prevented.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as an embodiment of a computer peripheral device system according to the present invention, as shown in FIG. 1, it is composed of an I / F conversion device 1 and a PC peripheral device 2, and is used by being connected to a PC 3. One example of a PC peripheral device product 4 is shown. The PC peripheral device product 4
The I / F converter 1 and the PC peripheral device 2 may be built in one housing, or the I / F converter 1 and the P
The C peripheral device 2 may be connected by a cable or the like. Further, a form in which the PC peripheral device product 4 is built in the PC 3 and provided to the end user is also included in the embodiment of the present invention. Also, the PC included in the PC peripheral device product 4
A plurality of peripheral devices 2 may be provided, but in order to make the description easy to understand, a case where one PC peripheral device 2 is included is mainly described here.

The I / F converter 1 is an external serial bus 1
8 is connected to PC3, and internal bus 16 connects to P3
C peripheral device 2 is connected. I / F converter 1 or P
The C peripheral device 2 has a display function such as an LED.

The I / F converter 1 includes a CPU 11, a memory 12, an internal bus I / F 15, and an external serial bus I / F 1.
7 and a control system LSI 19.

In the memory 12 of the I / F conversion device 1, there are two programs, a control program 10 and a loader program 13.

The control program 10 has an external serial bus I / F control function and an internal bus I / F control function.
When the U11 reads the control program 10 and operates, bus conversion control of the external serial bus 18 and the internal bus 16 is performed. The control program 10 includes version information of the control program. The loader program 13 controls the control program 10 as described later.
And has an internal bus I / F control function required for this rewriting.

The PC peripheral device 2 is an arbitrary device such as a hard disk drive / DVD-RAM drive, CD-ROM drive / CD-RW drive / DVD-ROM drive / MO drive. In FIG. 1, P
As the internal configuration of the C peripheral device 2, only functional blocks highly relevant to the present invention are shown. That is, the PC peripheral device 2
Has a CPU 21, a memory 22, an internal bus I / F 23, a control system LSI 24, etc.
According to the type of, other functional blocks can be provided.

The memory 12 and the memory 22 are EEPRO
An erasable / writable non-volatile memory such as M or flash memory is used, and both the I / F conversion device 1 and the PC peripheral device 2 have a system configuration in which the control program can be updated by an operation from the PC 3. .

The external serial bus I / F 17 that connects the I / F converter 1 and the PC 3 has a USB standard or IEEE1.
The 394 standard is applied. In this, IEEE13
The 94 standard supports high-speed communication of 400 Mbit / sec and addition and removal of devices with the power turned on in consideration of the usage status of general users.

The internal buses I / F 15 and 23 connecting the I / F converter 1 and the PC peripheral device 2 are PC peripheral devices such as a hard disk drive, a DVD-RAM drive, a CD-ROM drive and a CD-RW drive.・ DV
The IDE standard or the like for connecting a D-ROM drive / MO drive to a PC can be applied.

When data is transferred from the PC 3 to the PC peripheral device 2, the I / F conversion device 1 uses the external serial bus I / F.
The data of the external serial bus standard format is received from the PC 3 by F17, the data of the external serial bus standard is converted into the data of the internal bus standard format, and the data of the internal bus standard format is sent to the PC peripheral device 2 by the internal bus I / F15. . Similarly, when data is transferred from the PC peripheral device 2 to the PC 3, the I / F conversion device 1
Receives data in the internal bus standard format from the PC peripheral device 2 through the internal bus I / F 15, converts the data in the internal bus standard format into data in the external serial bus standard, and the external serial bus I / F 17 in the PC 3
Send data in the external serial bus standard format to.

A method of updating the control program of the PC peripheral device 2 and the I / F conversion device 1 according to the present invention having the above-mentioned configuration will be described with reference to FIG.

The end user uses a control program for the I / F converter including the version information and a control program for the PC peripheral device, which are provided from the Internet or the like, on the PC.
On the PC peripheral device 2 using the control program update tool 33 on the PC.
To the memory 22. Even if the control program transferred from the PC 3 is divided into two, one for the I / F conversion device and one for the PC peripheral device, or for the I / F conversion device and P
Even if the respective control programs for the C peripheral device are docked together to form one data, the number of write destination memories is one, and therefore the writing means PC3
The above control program update tool may be one of the control program update tools 33.

At this time, since the control program 10 in the memory 12 of the I / F converter 1 cannot be rewritten, the I / F
In the conversion device 1, the CPU 11 executes the control program 10 that has a bus conversion function based on the external serial bus I / F control function and the internal bus I / F control function and that is driven during normal communication. 2 and sends the two control programs from the PC 3 to the PC peripheral device 2.

The PC peripheral device 2 completes the control program update by the writing to the memory 22.

Next, a control program updating method for the I / F converter 1 will be described with reference to FIGS. 3 and 4.

The I / F converter 1 always drives the loader program 13 in the memory every time it is started (step S1 in FIG. 4). Under the control of the loader program 13, the CPU 11 obtains the version information included in the I / F converter control program written in the memory 22 in the PC peripheral device 2 via the internal bus 16 (step S2). Similarly, under the control of the loader program 13, the CPU 11 also acquires the version information of the control program 10 currently written in the memory 12 of the I / F conversion device 1 (step S3), and acquires these two versions. The information is compared (step S4).

If these two version information are different, the I / F converter control program is acquired from the memory 22 in the PC peripheral device 2 via the internal bus 16 and the I / F converter control program is acquired. I / F converter 1
Write to the area of the control program 10 in the memory 12 (step S5). As a result, the I / F converter 1
This means that the control program update was automatically performed.

In step S5, the CPU 1 which executes the loader program 13 in order to rewrite the control program 10 in the memory 12 of the I / F converter 1.
1 communicates with the PC peripheral device 2 via the internal bus 16 only, the loader program 13 uses the internal bus I / F.
It only needs to have a control function, and it is not necessary to have an external serial bus I / F control function.

When the updating of the control program in step S5 is completed normally, the I / F converter 1 drives the rewritten control program 13 (step S6).

On the other hand, in step S4, the version information of the control program for the I / F conversion device written in the memory 22 of the PC peripheral device 2 and the control written in the memory 12 of the I / F conversion device 1 are controlled. Program 1
If it is determined that the version information of 0 is the same,
Bypassing step S5 and proceeding to step S6, the CPU1
1 stops driving the loader program 13 and drives the control program 10.

In this way, the version information is compared, and only when the version information is different, the I / F
By rewriting the control program 10 in the memory 12 of the conversion device 1, unnecessary rewriting can be prevented.

In the step S5, the I / F
While the converter 1 is updating the control program, I /
Since the F conversion device 1 cannot perform the original function operation, it cannot receive a normal access from the PC 3 and may cause abnormal communication with the PC 3. At this time, if the external serial bus 18 connecting the PC 3 and the I / F converter 1 is removed before the control program is updated, the access from the PC 3 can be physically blocked, but for the end user, A new difficulty arises.

Therefore, the following method which does not require the removal is used. During the update, the I / F conversion device 1
By disabling the external serial bus interface function, the PC 3 is prevented from accessing the PC peripheral device 2 and the I / F conversion device 1. For example, when the IEEE 1394 interface is used for the external serial bus I / F 17, the loader program 13
However, due to the function of the physical layer, the IEEE 1394 port is disa
By setting to ble, the PC peripheral device 2 and the I / F conversion device 1 behave as if they were not connected to the PC 3. Further, during the update, the display function such as the LED of the PC peripheral device 2 or the I / F conversion device 1 is used to notify the end user that the communication with the PC 3 cannot be performed because the writing operation is in progress.

As described above, according to the PC peripheral device product 4 of the present embodiment, the I / F conversion device 1 and the PC peripheral device 2 are controlled by one control program update tool on the PC.
The control program can be automatically updated.

In general, the internal bus I / F control function has a smaller program capacity than the external serial bus I / F control function, and the I / F converter 1 acquires the control program from the PC peripheral device 2 in the above-described embodiment. Then, since the loader program 13 in the memory 12 of the I / F converter 1 only needs to have the internal bus I / F control function, the memory capacity required by the I / F converter 1 can be reduced and the cost can be suppressed. be able to.

Further, the IEEE 1394 standard defines that an information table (called a configuration ROM) in which device-specific information, program version information and the like are recorded is mounted. Therefore, the external serial bus I /
When the IEEE 1394 interface is used for F17, the program version information in the Configuration ROM may be used instead of the version information in the control program in the acquisition and comparison of the version information in steps S2 to S4. As a result, it is not necessary to add new version information to the control program, the number of version information correction steps and the memory capacity can be reduced, and the cost can be suppressed.

In this embodiment, an area for writing two new control programs by one control program update tool on the PC is provided in the memory 22 of the PC peripheral device 2.
The update determination means for acquiring and comparing the version information and the program updating means for updating the control program are
Although it is realized by the loader program 13 of the F conversion device 1 and the CPU 11 that executes the loader program 13, the present invention is of course not limited to this embodiment.

For example, the update program storage area for writing two new control programs by one control program update tool on the PC may be provided in either the I / F conversion device or the PC peripheral device. Further, the update determination means and the program update means may be realized by independent and independent programs, or may be provided in either of the I / F conversion device and the PC peripheral device.

For example, after the PC 3 writes both the new control program for the I / F converter and the new control program for the PC peripheral device 2 into the memory 12 of the I / F converter 1, the I The loader program 13 of the A / F converter 1 fetches a new control program for the PC peripheral device from the memory 12, and the fetched control program is stored in the memory 22 of the PC peripheral device 2 via the internal bus 16.
It may be configured to write to.

In the above description, the system composed of one PC peripheral device and one I / F conversion device has been exemplified, but the embodiment of the present invention is not limited to this, of course, and this structure is also applicable. Even if another arbitrary device is added and configured with three or more devices, one control program update tool on the PC can store three or more new control programs in the memory of any one device. It is also possible to acquire and compare the version information and update the program in each of the devices other than the device having the memory for writing and having the memory in the same manner as described above.

[0065]

As described above, according to the present invention, the computer peripheral device which allows the end user to easily update the control programs of the I / F conversion device and the computer peripheral device only by performing a simple operation. A system can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a PC peripheral device product as an embodiment of a computer peripheral device system according to the present invention.

FIG. 2 is an explanatory diagram schematically showing a data flow when a new control program is written from a PC to a PC peripheral device product at the time of updating the control program.

FIG. 3 is an explanatory diagram schematically showing a data flow when the control program of the I / F converter is updated at the time of updating the control program.

FIG. 4 is a flowchart showing an operation relating to a control program update of a loader program in the I / F conversion device.

FIG. 5 is a block diagram showing a system configuration of a conventional I / F converter having a loader program having an external serial bus I / F control function and devices connected to the conventional I / F converter.

FIG. 6 is an explanatory diagram schematically showing a data flow when updating a control program in the conventional system configuration shown in FIG.

[Explanation of symbols]

1 I / F converter 2 PC peripherals 3 PC 10 Control program 11 CPU 12 memories 13 Loader program 15 Internal bus I / F 16 internal bus 17 External serial bus I / F 18 External serial bus 19 Control system LSI 21 CPU 22 memory 23 Internal bus I / F 24 Control system LSI 33 Control program update tool

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Ueda             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Kenji Takauchi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Yoshihiro Tahira             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Isamu Ishimura             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5B014 EB03 FA12 FB03 GD05 GD19                       GD35 GD47                 5B076 AC01 AC03 AC07 EA02

Claims (7)

[Claims] 1. A computer peripheral system connected to a computer, the system having a different interface from the computer,
At least one computer peripheral device that operates according to a computer peripheral device control program; and an interface conversion device that operates according to the interface conversion device control program and that performs interface conversion between the computer and the computer peripheral device, A new computer provided via the computer when updating the computer peripheral device control program and the interface conversion device control program in the memory of the first device, which is one of the computer peripheral device and the interface conversion device An update program storage area for storing a peripheral device control program and an interface conversion device control program, other than the first device on the computer peripheral device system. A computer peripheral, comprising a program updating means for writing the device control program extracted from the update program storage area into a memory of the device, in one of the computer peripheral device and the interface conversion device. Equipment system. 2. Version information of a new computer peripheral device control program or interface conversion device control program stored in the update program storage area, and in a memory of a device other than the first device on the computer peripheral device system. The update determination means for determining whether or not the device control program needs to be updated by comparing the stored version information of the computer peripheral device control program or the interface conversion device control program. 1. The computer peripheral device system according to 1. 3. The computer peripheral device system according to claim 2, wherein the update determination means is activated each time a computer peripheral device or an interface conversion device having the update determination means is activated. 4. At least one of the devices other than the first device on the computer peripheral system is IEEE13.
4. The computer peripheral device system according to claim 2, wherein the computer peripheral device system has a 94 interface, and the update determination unit uses device-specific information that is defined in a control program according to the IEEE 1394 standard as the version information. 5. The computer peripheral device system according to claim 1, wherein the first device is the computer peripheral device, and the program updating means is provided in the interface conversion device. 6. The computer peripheral device according to claim 1, further comprising a display unit that indicates that the program updating unit is performing a writing operation when the program updating unit is writing the control program. system. 7. An access from the computer to the computer peripheral device by disabling an interface function between the interface conversion device and the computer while the program updating means is writing a control program. 7. The computer peripheral system according to claim 1, wherein the computer peripheral device system is disabled.