JP2006227871A - Updating system, information processor, information distribution device, and updating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an updating system for upgrading a main program, and for efficiently upgrading a relevant program or data in time with the upgrading of the main program. <P>SOLUTION: This updating system for updating a module "MJ01" to be called from a main program "PR01" for use is configured so that update information 21 including upgrade information 22 and suitable version information 23 of the main program can be distributed from a server to an AV navigation device 1, and that the main program can be upgraded on the basis of the upgrade information 22. The AV navigation device 1 is provided with a means for comparing the current version of the module with the suitable version on the basis of the suitable version information 23 and a means for upgrading the module on the basis of the comparison result. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to an update system, an information processing apparatus, an information distribution apparatus, and an update method, and more particularly, an update system and an information processing apparatus for efficiently performing an operation (update) for rewriting a program or data to a newer one. The present invention relates to an information distribution apparatus and an update method.

It is very difficult for the user himself to do all the work to upgrade programs and data. First, the user must know that there are programs and data that have been upgraded.

In addition, the user obtains a recording medium such as a flexible disk or a CD-ROM on which a program required for version upgrade (for example, a difference program from the old program or a modified program for correcting the old program) is recorded. Thus, installation work must be performed using the recording medium.

Therefore, a method for automatically performing program upgrade has been proposed and put into practical use. For example, when a difference in version is recognized when using the Internet, there is a method of automatically connecting to a predetermined website, downloading a program necessary for upgrading, and upgrading the program. Further, automatic updates with further improvements and improvements are disclosed in the following Patent Documents 1 to 5.

By the way, when a certain main program is upgraded, related modules (that is, programs and data that are called and used by the main program)
In some cases, it may be necessary to upgrade the version, or it may be desirable to upgrade the version.

For example, when a new version of the main program in the navigation system appears, a program (for example, a route search program) or data (
For example, it is conceivable that a new version of map data) has appeared. In such a case, it is desirable to upgrade the route search program and map data in accordance with the upgrade of the main program.

However, in the conventional update system, it is not possible to efficiently upgrade the programs and data related to the upgrade of the main program.
JP 2004-021463 A JP 2003-296116 A JP 2003-288226 A JP 2003-288191 A JP 2001-230892 A

Means for solving the problems and their effects

The present invention has been made in view of the above problems, and an update system, an information processing apparatus, and information that can efficiently perform upgrades of programs and data related to the upgrade of main programs. The object is to provide a distribution device.

In order to achieve the above object, an update system (1) according to the present invention is an update system that updates a module that is called from a main program stored in an information processing device and used. Update information including upgrade information of the main program is distributed to the information processing apparatus, and the main program is upgraded based on the upgrade information. The current version of the module stored in the information processing apparatus is compared with the preferred version based on the preferred version information indicating the version of the module, which is suitable for executing the upgraded main program. Version ratio And update means for updating the module based on the comparison result by the version comparison means, and the preferred version information is included in the update information distributed from the information distribution device It is characterized by.

According to the update system (1), the current version of the module stored in the information processing apparatus is compared with the preferred version, and the version of the module is upgraded based on the comparison result. Thereby, not only the upgrade of the main program but also the upgrade of the modules (programs and data) that are called from the main program and used can be realized.

The preferred version information used for the comparison is included in the update information. Therefore, the preferred version information is transmitted from the information distribution apparatus to the information processing apparatus together with the upgrade information of the main program. As a result, the information processing apparatus does not have to acquire the preferred version information and the upgrade information of the main program separately, so that the efficiency of negotiation between the two can be improved.

In addition, since the version upgrade information of the main program and the preferred version information can be collectively managed, the management is facilitated. Further, in the information distribution apparatus, it is not necessary to separately manage the file storing the upgrade information of the main program and the file storing the preferred version information, so that the efficiency of file selection is improved. be able to.

Further, the update system (2) according to the present invention includes the update system (1).
The update means, based on the comparison result by the version comparison means, the upgrade information distribution request means for requesting the information distribution apparatus to distribute the upgrade information of the module to be upgraded, and An upgrade means for upgrading the module based on the upgrade information distributed in response to the request from the information distribution apparatus is provided.

According to the update system (2), the module is upgraded based on the upgrade information distributed from the information distribution apparatus. That is, since it is not necessary to use a recording medium such as a flexible disk, the work burden on the user can be reduced. Also, automation of a series of update processing operations can be realized.

Further, the update system (3) according to the present invention includes the update system (1).
The update means notifies the user of the module to be upgraded based on the comparison result by the version comparison means; and
Module selection means for selecting a module to be upgraded based on information obtained from the operation means that can be operated by the user, and version upgrade information for the module selected by the module selection means for the information distribution apparatus Upgrade information delivery requesting means for requesting delivery of the software, and upgrade means for upgrading the module based on the upgrade information delivered in response to the request from the information delivery apparatus. It is characterized by.

According to the update system (3), the module is upgraded based on the upgrade information distributed from the information distribution apparatus. That is, since it is not necessary to use a recording medium such as a flexible disk, the work burden on the user can be reduced. In addition, since the user can select a module to be upgraded, it is possible to prevent the module from being upgraded that is not desired by the user.

An update system (4) according to the present invention is an update system for updating a module that is called from a main program stored in an information processing apparatus and used. The update information including the upgrade information of the main program is distributed, and the upgrade of the main program is performed based on the upgrade information.
The information distribution device stores current version information storing current version information indicating the current version of the module stored in the information processing device, and current version stored in the current version information storage Based on the information and preferred version information indicating the version of the module suitable for executing the upgraded main program, the current version and preferred version of the module stored in the information processing apparatus And a module information distribution unit that distributes module information to be upgraded to the information processing device based on a comparison result by the version comparison unit. The device
And updating means for updating the module based on module information distributed from the information distribution apparatus.

According to the update system (4), the information distribution device compares the current version of the module stored in the information processing device with the preferred version, and based on the comparison result, On the other hand, module information to be upgraded is distributed. Then, the module is upgraded based on the distributed module information. Thereby, not only the upgrade of the main program but also the upgrade of the modules (programs and data) that are called from the main program and used can be realized.

In addition, since the comparison between the current version of the module stored in the information processing apparatus and the preferred version is performed by the information distribution apparatus and does not have to be performed by the information processing apparatus, the processing load of the information processing apparatus is reduced. Can be reduced. Further, since the information processing apparatus does not have to manage the current version information, the configuration can be simplified.

Further, the update system (5) according to the present invention includes the update system (4).
The update information distributed from the information distribution apparatus includes module information to be upgraded based on a comparison result by the version comparison means.

According to the update system (5), module information to be upgraded is included in the update information. Accordingly, the module information is transmitted from the information distribution apparatus to the information processing apparatus together with the upgrade information of the main program. As a result, the information processing apparatus does not have to acquire the module information and the upgrade information of the main program separately, so that negotiation efficiency between the two can be improved.

Further, the update system (6) according to the present invention includes the update system (4).
Alternatively, in (5), the update unit requests the information distribution device to distribute the upgrade information of the module to be upgraded based on the module information distributed from the information distribution device. Update information distribution request means,
An upgrade means for upgrading the module based on the upgrade information delivered in response to the request from the information delivery apparatus is provided.

According to the update system (6), the module is upgraded based on the upgrade information distributed from the information distribution apparatus. That is, since it is not necessary to use a recording medium such as a flexible disk, the work burden on the user can be reduced. Also, automation of a series of update processing operations can be realized.

Further, the update system (7) according to the present invention includes the update system (4).
Alternatively, in (5), the update means notifies the user of a module to be upgraded based on module information distributed from the information distribution apparatus, and the user operates the module update means. Based on the information obtained from the operating means to get
Module selection means for selecting a module to be upgraded, upgrade information distribution request means for requesting the information distribution apparatus to distribute the upgrade information of the module selected by the module selection means, and the information distribution apparatus And upgrading means for upgrading the module based on the upgrade information distributed in response to the request.

According to the update system (7), the module is upgraded based on the upgrade information distributed from the information distribution apparatus. That is, since it is not necessary to use a recording medium such as a flexible disk, the work burden on the user can be reduced. In addition, since the user can select a module to be upgraded, it is possible to prevent the module from being upgraded that is not desired by the user.

Moreover, the update system (8) according to the present invention includes the update system (2).
, (3), (6), (7), reception completion for determining whether or not all the upgrade information to be distributed in response to the request by the upgrade information distribution request means has been received A determination means, wherein when the reception completion determination means determines that all the upgrade information to be distributed has been received, the upgrade means upgrades the module. Yes.

When the upgrade information is distributed from the information distribution device to the information processing device, if communication is interrupted for some reason, if the countermeasure is not taken, the distribution is restarted from the beginning. There is a risk of becoming. For this reason, if the module is upgraded in parallel with the reception of the upgrade information, there is a possibility that some trouble occurs.
According to the update system (8), the module is upgraded after receiving all the upgrade information to be distributed. Thereby, it is possible to avoid the occurrence of the above problems.

Further, the update system (9) according to the present invention includes the update system (2).
, (3), (6), or (7), wherein the version upgrade means sequentially upgrades the corresponding module from the one for which the reception of the upgrade information has been completed. Yes.

If the module is upgraded after receiving all the upgrade information that should be distributed, the free space in the RAM, which is a temporary storage location for data, will be remarkably reduced and the processing load will increase. There is a fear.
According to the update system (9), the upgrade of the corresponding module is performed sequentially from the reception of the upgrade information. Thereby, it is possible to prevent the free space of the RAM from being remarkably reduced.

The update system (10) according to the present invention includes the update system (2).
), (3), (6), (7), the upgrade information delivery request means distributes the upgrade information according to the order determined based on the amount of information of the upgrade information. It is a feature that demands.

The information processing apparatus does not always operate. For example, when the information processing device is a navigation device, the navigation device is likely to be turned off when the vehicle reaches the destination. Also, the reception of version upgrade information cannot be completed instantaneously, and requires a certain amount of time. Therefore, when receiving the upgrade information, taking into account the operating time of the information processing apparatus, the information amount of the upgrade information is large,
Alternatively, it is preferable to receive the information with a small amount of information.
According to the update system (10), distribution of the upgrade information is requested according to the order determined based on the size of the information amount of the upgrade information. As a result, the reception of the upgrade information can be made more efficient.

The update system (11) according to the present invention includes the update system (2).
), (3), (6), (7), (10), based on the remaining operating time of the information processing apparatus, the distribution request for the upgrade information is limited to the upgrade information distribution request means It is characterized by having a distribution request limiting means that takes into account.

As described above, the information processing apparatus does not always operate. For example, when the information processing device is a navigation device, the navigation device is likely to be turned off when the vehicle reaches the destination. Also, the reception of version upgrade information cannot be completed instantaneously, and requires a certain amount of time. Therefore, the information processing apparatus is turned off during the reception of the upgrade information, and there is a possibility that problems such as waste of processing may occur.

According to the update system (11), restrictions are added to the distribution request for the upgrade information by the upgrade information distribution request means based on the remaining operating time of the information processing apparatus. For example, the distribution request is divided and performed. Thereby, it is possible to prevent the above problems from occurring. The remaining operation time includes, for example, the time required to reach the destination.

The update system (12) according to the present invention includes the update system (1).
) To (11), wherein the updating means updates the modules according to an order determined based on the importance of the modules.

Not all modules that are called and used by the main program are equally important. If the main program is upgraded, there should be a module that must be upgraded and a module that does not need to be upgraded.
According to the update system (12), the modules are updated according to the order determined based on the importance of the modules. As a result, it is possible to prioritize modules with higher importance, that is, to upgrade modules in an appropriate order.

The update system (13) according to the present invention includes the update system (1).
In any one of (12) to (12), the update means updates the module based on whether or not there is an influence on the execution of a program different from the main program.

A module that is called from one main program and used may be called from another program and used. For this reason, if the version of the module is upgraded during the execution of the other program, there is a possibility that a problem may occur.

According to the update system (13), the update means updates the module based on whether there is an influence on the execution of a program different from the main program. As a result, for example, it is possible to lower the priority for performing a version upgrade of a module that affects the execution of the other program, or to not upgrade the module while the other program is being executed. It is possible to avoid the occurrence of the above problems.

The information processing apparatus (1) according to the present invention includes the update systems (1) to (13).
It is an information processing apparatus that constitutes any one of the above.

According to the information processing apparatus (1), the current version of the stored module is compared with the preferred version, and the version of the module is upgraded based on the comparison result. Thereby, not only the upgrade of the main program but also the upgrade of the modules (programs and data) that are called from the main program and used can be realized.

The preferred version information used for the comparison is included in the update information. Accordingly, the preferred version information is transmitted from the information distribution apparatus together with the upgrade information of the main program. Thereby, the preferred version information and the upgrade information of the main program do not have to be acquired separately, so that the negotiation efficiency with the information distribution apparatus can be improved.

The information distribution apparatus (1) according to the present invention includes the update systems (1) to (13).
It is an information distribution apparatus that constitutes any one of the above.

According to the information distribution apparatus (1), the upgrade information of the main program,
Since the collective management with the preferred version information becomes possible, the management becomes easy. Further, since it is not necessary to separately manage the file storing the upgrade information of the main program and the file storing the preferred version information, it is possible to improve the efficiency of file selection.

An update method (1) according to the present invention is an update method for updating a module that is called from a main program stored in an information processing apparatus and used. On the other hand, the information processing apparatus includes a step of distributing update information including upgrade information of the main program, and the information processing apparatus performs the version upgrade of the main program based on the version upgrade information. Comparing the current version of the module stored in the information processing device with a preferred version based on preferred version information indicating the version of the module, suitable for executing the main program;
And updating the module based on the result of the comparison, wherein the preferred version information is included in the update information and distributed to the information processing apparatus.

According to the update method (1), the current version of the module stored in the information processing apparatus is compared with the preferred version, and the version of the module is upgraded based on the comparison result. Thereby, not only the upgrade of the main program but also the upgrade of the modules (programs and data) that are called from the main program and used can be realized.

Further, preferred version information used for the comparison is included in the update information and distributed to the information processing apparatus. Therefore, the preferred version information is transmitted from the information distribution apparatus to the information processing apparatus together with the upgrade information of the main program. As a result, the information processing apparatus does not have to acquire the preferred version information and the upgrade information of the main program separately, so that the efficiency of negotiation between the two can be improved.

In addition, since the version upgrade information of the main program and the preferred version information can be collectively managed, the management is facilitated. Further, in the information distribution apparatus, it is not necessary to separately manage the file storing the upgrade information of the main program and the file storing the preferred version information, so that the efficiency of file selection is improved. be able to.

Embodiments of an update system, an information processing apparatus, an information distribution apparatus, and an update method according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram schematically showing a main part of the update system according to the embodiment (1). In the figure, reference numeral 1 denotes an audio visual (AV) navigation device (corresponding to the information processing device in the present invention). The AV navigation device 1 is configured to be connectable to a network NT such as the Internet, and is connected to the network NT. It is possible to exchange information with the server 11 (corresponding to the information distribution apparatus in the present invention).

The AV / navigation apparatus 1 includes a CPU 2, a PROM 3 for storing various programs and data executed by the CPU 2, connected to the CPU 2 via a communication bus BL1, a RAM 4 for temporarily storing data, and the network NT. The version information of the main program stored in the communication unit 5, the operation unit 6, the display unit 7, and the PROM 3 for realizing the exchange of information with the connected server 11 is associated with each main program. And a main program version information database (DB) 8 for storing information and a module version information database (DB) 9 for storing version information of modules (programs and data) stored in the PROM 3 in association with the respective modules. It consists of

FIG. 2 is a diagram showing an example of the storage state in the main program version information database 8. The version information of the main program stored in the PROM 3 is stored in association with each main program. In the table shown in FIG.
The current version of the main program with the code “PR01” is “1.0”, and the current version of the main program with the ID code “PR02” is “1.2”.

FIG. 3 is a diagram showing an example of the storage state in the module version information database 9. The module version information stored in the PROM 3 is stored in association with each module. In the table shown in FIG. 3, for example, the ID code “MJ01”
The current version of the module of “1.0” is “1.0”, and the current version of the module of the ID code “MJ02” is “1.2”.

The server 11 has a CPU 12 and a CP 12 connected to the CPU 12 via a communication bus BL2.
A communication unit for realizing exchange of information between the PROM 13 for storing various programs and data executed by the U 12, the RAM 14 for temporarily storing data, and the AV / navigation apparatus 1 connected to the network NT 15, an update information database (DB) 16 storing update information of the main program, and an upgrade information database (DB) 17 storing module upgrade information.

FIG. 4 is a diagram showing an example of a storage state in the update information database 16, version information of the main program, version upgrade information (for example, a differential program) for updating the main program to the version, and the main program Module information that is called and used in association with each main program is stored. The module information includes suitable version information indicating the version of the module suitable for executing the main program upgraded to the version, and the suitable version information corresponds to each module. It is remembered.

In the table shown in FIG. 4, for example, an ID code “MJ01” and an ID code “MJ02” are assigned to a module that is called from a main program with an ID code “PR01”.
”, An ID code“ MJ04 ”, an ID code“ MJ05 ”, and an ID code“ MJ21 ”are included.

The module version of the ID code “MJ01” suitable for executing the main program of the ID code “PR01” upgraded to the version “1.1” is “1.1”, and the ID code “ It is indicated that the version of the module “MJ02” is “1.2”. Further, from the table shown in FIG. 4, the module with the ID code “MJ01” is not only the main program with the ID code “PR01” but also the ID code “PJ”.
It can be seen that this is a module that is also called from the main program of “R02”.

FIG. 5 is a diagram illustrating an example of a storage state in the version upgrade information database 17. The version information indicating the version of the module and the version upgrade information (for example, a difference) required to update the module to the version. Module) is stored in association with each module.

In the table shown in FIG. 5, for example, an ID information is stored in the upgrade information database 17.
The module of code “MJ01” is changed from version “1.0” to version “
Version update information (difference module DF _MJ0101 ) for updating to “1.1” and the module of ID code “MJ02” from the previous version “1.1” to version “1.1”.
Version-up information in order to update to 1.2 "(difference module DF _MJ0212), further upgrade information for updating from a previous version" 1.0 "to version" 1.1 "(the difference module DF _MJ0201 ) Is stored.

Therefore, for example, the ID code “MJ02” is changed from the version “1.1” to the version “1”.
. To upgrade to 2 ”, the difference module DF _MJ0212 is required. To _upgrade the ID code“ MJ02 ”from version“ 1.0 ”to version“ 1.2 ”, the difference from the difference module DF _MJ0201 Module DF _MJ0212 is required.

Next, the exchange of information between the AV / navigation apparatus 1 and the server 11 constituting the update system according to the embodiment (1) (that is, processing operations performed by the CPUs 2 and 12).
Will be described with reference to the flowchart shown in FIG. This exchange of information is AV
The navigation apparatus 1 is started when it is determined that the main program needs to be updated. For determining whether or not the main program needs to be updated, for example, information stored in the main program version information database 8 (see FIG. 2) and information stored in the update information database 16 (FIG. 4). For example).

First, the AV / navigation apparatus 1 requests the server 11 to transmit update information of the main program that needs to be updated (step S1).
Upon receiving the update information transmission request transmitted from the AV / navigation apparatus 1 (step S2), the server 11 reads the requested update information of the main program from the update information database 16 (see FIG. 4) (step S2). S3),
The read update information is transmitted to the AV / navigation apparatus 1 (step S4).
.

FIG. 7 is a diagram showing update information transmitted from the server 11 to the AV / navigation apparatus 1. In the figure, reference numeral 21 denotes update information. The update information 21 is version upgrade information 22 (for example, required for version upgrade of the main program).
Difference program) and module information 23. As will be described in detail later, the module information 23 is suitable for executing an ID code of a module that is called from the main program and used, and the upgraded main program.
And preferred version information indicating the version of the module.

FIG. 8 is a diagram showing update information of the main program with the ID code “PR01”. In the table shown in FIG. 8, the upgrade information 22 includes the ID code “PR01”.
” _{Is the} difference program DF _PR0101 required for upgrading the version of the main program to“ 1.1 ”, and the module called and used from the main program of the ID code“ PR01 ” ID code “MJ01”, ID code “
MJ02 ”, ID code“ MJ04 ”, ID code“ MJ05 ”, ID code“ MJ21 ”
”Module is included.

The version of each module suitable for executing the main program of the ID code “PR01” upgraded to the version “1.1” is shown. For example, the version of the module of the ID code “MJ01” is shown. The preferred version is “1.1”
The preferred version of the module with ID code “MJ02” is “1.2”.

When the AV / navigation apparatus 1 receives the update information transmitted from the server 11 (step S5), the AV / navigation apparatus 1 is based on the upgrade information (for example, the upgrade information 22 shown in FIG. 8) included in the received update information. Then, the main program is upgraded (step S6).

Next, the AV / navigation apparatus 1 receives the module information (for example, the module information 23 shown in FIG. 8) included in the received update information and the module version information (for example, the module version information database 9). Whether there is a module for which it is preferable to upgrade the current version of the module stored in the PROM 3 of the AV / navigation apparatus 1 based on the version information shown in FIG. It is determined whether or not (step S7).

For example, when upgrading the main program of the ID code “PR01” from the version “1.0” to the version “1.1”, the ID code “MJ01”, the ID code “MJ02”, ID code “MJ04”, ID code “MJ0”
5 ”and ID code“ MJ21 ”are version“ 1.1 ”and“ 1.
It turns out that it is preferable that they are "2", "1.2", "1.3", "1.1".

When the current version of the module stored in the PROM 3 of the AV / navigation apparatus 1 is as shown in FIG. 3, the modules of the ID code “MJ01” and the ID code “MJ04” are upgraded. It can be seen that this is the preferred module.

If the AV / navigation apparatus 1 determines that there is a module that is preferably upgraded, the AV / navigation apparatus 1 next sends the corresponding module (for example, ID) to the server 11.
Request for transmission of upgrade information of the code “MJ01” and ID code “MJ04” (step S8).

Upon receiving the upgrade information transmission request transmitted from the AV / navigation apparatus 1 (step S9), the server 11 reads the requested upgrade information from the upgrade information database 17 (step S10). The upgrade information is transmitted to the AV / navigation apparatus 1 (step S11).

When receiving the upgrade information transmitted from the server 11 (step S12), the AV / navigation apparatus 1 upgrades the module based on the received upgrade information (step S13). FIG. 9 shows module version changes when the main program with the ID code “PR01” is upgraded from version “1.0” to version “1.1”.

In FIG. 9, based on the upgrade information 22 (of the main program) included in the update information 21 transmitted from the server 11 to the AV / navigation apparatus 1,
It is shown that the version of the main program with the ID code “PR01” is updated from “1.0” to “1.1”.
Further, in FIG. 9, it is determined from the module information 23 included in the update information 21 that the modules having the ID code “MJ01” and the ID code “MJ04” are preferably upgraded, and the version is upgraded. It is shown that.

Next, the processing operation [1-A] performed by the CPU 2 in the AV / navigation apparatus 1 will be described based on the flowchart shown in FIG. The processing operation [1-A] is performed when it is determined that the main program needs to be updated.

First, the server 11 is requested to transmit update information of the main program that needs to be updated (step S21). This request includes an ID code “PRxx” of the main program that needs to be updated, information indicating the current version of the main program in the AV / navigation device 1, a request code for transmitting update information, This is performed by transmitting an ID code for identification to the server 11.

Next, the update information 21 (FIG. 9) transmitted from the server 11 in response to the request.
(See) is temporarily stored in the RAM 4 (step S22), and the version of the main program is upgraded based on the version upgrade information 22 (see FIG. 9) included in the update information 21 (step S23). Thereafter, the main program version information database 8 is rewritten to update the version information of the ID code “PRxx” (step S24).

Next, based on the preferred version information of the module information 23 (see FIG. 9) included in the update information 21, the current version of the module stored in the PROM 3 is compared with the preferred version, and the version upgrade is performed. It is determined whether or not a preferred module exists (step S25).

If it is determined that there is a module that is preferably upgraded, the server 11 is requested to transmit upgrade information of the corresponding module (step S26). On the other hand, if it is determined that there is no module for which version upgrade is preferable, the processing operation [1-A] is terminated as it is. The request includes the ID code “MJxx” of the module that is preferably upgraded and the A of the module.
The information indicating the current version in the V-navigation device 1, the upgrade information transmission request code, and the ID code for identifying the device itself are transmitted to the server 11.

Next, the module upgrade information transmitted from the server 11 in response to the request is temporarily stored in the RAM 4 (step S27), and it is determined whether or not all the information in response to the request has been received. If it is determined that information to be received remains (step S28), the process returns to step S27.

On the other hand, if it is determined that all the information to be received has been received, the corresponding module is upgraded based on the upgrade information stored in the RAM 4 (step S29), and then the module version information database. 9 is rewritten to update the version information of the ID code “MJxx” (step S30).

For example, as shown in FIG. 9, the module with ID code “MJ01” is version “1”.
. 1 ”and the module with ID code“ MJ04 ”is version“ 1 ”.
. 2 ”, the module version information database 9 ID
The version information corresponding to the code “MJ01” is updated to “1.1”, and the ID code “MJ
The version information corresponding to “J04” is updated to “1.2”.

Here, the module upgrade is performed after all the information to be received is received. However, in another embodiment, the module upgrade is performed sequentially, and the free space of the RAM 3 is reduced. It may be possible to ensure. For example, version upgrade is performed every time reception of each module is completed.

According to the update system according to the above embodiment (1), the current version of the module stored in the PROM 3 of the AV / navigation apparatus 1 is compared with the preferred version, and the version of the module is determined based on the comparison result. Up is done. Thereby, not only the upgrade of the main program but also the upgrade of the modules (programs and data) that are called from the main program and used can be realized.

The preferred version information (module information 23) used for the comparison is included in the update information 21. Accordingly, the preferred version information is transmitted from the server 11 to the AV / navigation apparatus 1 together with the upgrade information 22 of the main program. As a result, the AV / navigation apparatus 1 does not have to acquire the preferred version information and the upgrade information of the main program separately, so that the negotiation with the server 11 can be made more efficient.

In addition, since the version upgrade information of the main program and the preferred version information can be collectively managed, the management is facilitated. Further, since the server 11 does not need to separately manage the file storing the upgrade information of the main program and the file storing the preferred version information, the file can be selected more efficiently.

Next, an update system according to Embodiment (2) will be described. However, the update system according to the embodiment (2) has the same configuration as the update system shown in FIG. 1 except for the AV / navigation apparatus 1 and the CPU 2 and PROM 3 constituting the AV / navigation apparatus 1. , AV navigation device, CPU, and PROM
Are denoted by different reference numerals, and other descriptions are omitted here.

AV / Navigation Device 1 Constructing Update System According to Embodiment (2)
The processing operation [2-A] performed by the CPU 2A in A will be described based on the flowchart shown in FIG. Note that the processing from step S31 to S35 is the same as step S31 shown in FIG.
Since it is the same as the processing from 21 to S25, here, the processing after determining that “Y” in step S35, that is, it is preferable to perform version upgrade, will be described.

If it is determined in step S35 that there is a module that is preferably upgraded, the module is displayed on the display unit 7 and notified to the user, whereby the module that the user desires to upgrade is displayed. Is selected (step S36), and the module to be upgraded is selected based on the information obtained from the operation unit 6 (step S37). In some cases, the user may not wish to upgrade any of the modules.

Next, it is determined whether or not a module to be upgraded has been selected (step S3).
8) If it is determined that the module to be upgraded is selected, then the server 1
1 is requested to transmit upgrade information of the corresponding module (step S3).
9). On the other hand, if it is determined that the module to be upgraded has not been selected, the processing operation [2-A] is terminated as it is.

Next, the module upgrade information transmitted from the server 11 in response to the request is temporarily stored in the RAM 4 (step S40), and it is determined whether or not all the information in response to the request has been received. If it is determined that information to be received remains (step S41), the process returns to step S40.

On the other hand, if it is determined that all the information to be received has been received, the corresponding module is upgraded based on the upgrade information stored in the RAM 4 (step S42), and then the module version information database. 9 is rewritten to update the version information of the ID code “MJxx” (step S43).

According to the update system according to the above embodiment (2), the user can select a module to be upgraded, so that it is possible to prevent the module from being upgraded that is not desired by the user.

FIG. 12 is a block diagram schematically showing a main part of the update system according to the embodiment (3). The same components as those of the update system shown in FIG. In the figure, reference numeral 31 denotes an AV / navigation device. The AV / navigation device 31 is configured to be connectable to a network NT such as the Internet, and can exchange information with a server 41 connected to the network NT. It can be done.

The AV / navigation device 31 is connected to the CPU 32, a PROM 33 for storing various programs and data executed by the CPU 32, a RAM 34 for temporarily storing the data, and the network NT connected to the CPU 32 via the communication bus BL3. A communication unit 5 for realizing exchange of information with the connected server 41, an operation unit 6, a display unit 7, and P
Main program version information database 8 (see FIG. 2) that stores the version information of the main program stored in the ROM 3 in association with each main program.
It is comprised including.

The server 41 is a CPU 42 and a CP connected to the CPU 42 via a communication bus BL4.
Communication unit for realizing exchange of information between the PROM 43 for storing various programs and data executed by the U 42, the RAM 44 for temporarily storing data and the like, and the AV / navigation device 31 connected to the network NT 15, an update information database 16 (see FIG. 4) in which update information of the main program is stored, an upgrade information database 17 (see FIG. 5) in which module upgrade information is stored, and each AV / navigation device 31. Modules stored in (PROM 33) (
And a module version information database (DB) 45 that stores version information of programs and data in association with each module.

FIG. 13 is a diagram showing an example of the storage state in the module version information database 45, in which module version information stored in each AV / navigation device 31 (PROM 33) is stored in association with each module. Yes. In the table shown in FIG. 13, for example, the current version of the module of the ID code “MJ01” stored in the AV / navigation device 31 of the ID code “AV01” is “1.0”.
It is indicated that the current version of the module of the D code “MJ02” is “1.2”.

Next, the exchange of information between the AV / navigation apparatus 31 and the server 41 (that is, processing operations performed by the CPUs 32 and 42) constituting the update system according to the embodiment (3) is based on the flowchart shown in FIG. explain. This information exchange is started when the AV / navigation device 31 determines that the main program needs to be updated. For determining whether or not the main program needs to be updated, for example, information stored in the main program version information database 8 (see FIG. 2) and information stored in the update information database 16 (FIG. 4). For example).

First, the AV / navigation apparatus 31 requests the server 41 to transmit update information of the main program that needs to be updated (step S51).
Upon receiving the update information transmission request transmitted from the AV / navigation apparatus 31 (step S52), the server 41 reads the requested update information of the main program from the update information database 16 (step S53).

FIG. 15 is a diagram showing update information that the server 41 reads from the update information database 16. In the figure, 51 indicates update information, and the update information 51 includes upgrade information 52 (for example, a differential program) required for upgrading the main program and module information 53. As will be described in detail later, the module information 53 indicates the module ID code that is called from the main program and used, and the module version suitable for executing the upgraded main program. Version information.

FIG. 16 is a diagram showing update information of the main program with the ID code “PR01”. In the table shown in FIG. 16, the upgrade information 52 includes the ID code “PR
It is indicated that the difference program DF _PR0101 is necessary for upgrading the version of the main program of “01” to “1.1”, and is used by being called from the main program of the ID code “PR01”. , ID code “MJ01”, ID code “MJ02”, ID code “MJ04”, ID code “MJ05”, ID code “MJ”
21 "modules are included.

The version of each module suitable for executing the main program of the ID code “PR01” upgraded to the version “1.1” is shown. For example, the version of the module of the ID code “MJ01” is shown. The preferred version is “1.1”
The preferred version of the module with ID code “MJ02” is “1.2”.

Next, the server 41 stores the module information included in the read update information and the AV / navigation device 31 that is stored in the module version information database 45 (see FIG. 13) and is the update information transmission request source. It is better to compare the current version stored in the AV / navigation device 31 of the module used by being called from the updated main program with the preferred version based on the module information being updated, and to upgrade the version. It is determined whether or not a preferred module exists (step S54).

For example, when the main program of the ID code “PR01” is upgraded from the version “1.0” to the version “1.1”, the ID code “MJ01”, the ID code “MJ02”, ID code “MJ04”, ID code “MJ
05 ”and ID code“ MJ21 ”modules are version“ 1.1 ”and“ 1 ”, respectively.
. It turns out that it is preferable that they are "2", "1.2", "1.3", "1.1".

For example, the AV navigation device 3 with the ID code “AV01” as the request source
When the current version of the module stored in one PROM 33 is as shown in FIG. 13, it is preferable that the modules with the ID code “MJ01” and the ID code “MJ04” have been upgraded. I understand that there is.

If the server 41 determines that there is a module that is preferably upgraded, then the server 41 obtains update information 51A including module information 53A excluding modules that do not need to be upgraded as shown in FIG. AV navigation device 31
(Step S55).

When the AV / navigation device 31 receives the update information transmitted from the server 41 (step S56), the AV / navigation device 31 is based on the upgrade information (for example, the upgrade information 52 shown in FIG. 17) included in the received update information. Then, the main program is upgraded (step S57).

Next, the AV / navigation device 31 preferably upgrades the server 41 based on module information (for example, module information 53A shown in FIG. 17) included in the received update information. For example, the ID code “MJ0
1 ”and a module with ID code“ MJ04 ”) (step S58).

When the server 41 receives the upgrade information transmission request transmitted from the AV / navigation apparatus 31 (step S59), the server 41 transmits the requested upgrade information.
Read from the upgrade information database 17 (step S60), and transmit the read upgrade information to the AV / navigation device 31 (step S61).

When receiving the upgrade information transmitted from the server 41 (step S62), the AV / navigation apparatus 31 upgrades the module based on the received upgrade information (step S63). FIG. 18 shows the ID code “PR01.
”Indicates a change in module version when the main program is upgraded from version“ 1.0 ”to version“ 1.1 ”.

In FIG. 18, the version of the main program having the ID code “PR01” is “based on the upgrade information 52 (of the main program) included in the update information 51A transmitted from the server 41 to the AV / navigation apparatus 31. 1.0 "to" 1.
It is shown that it is updated to “1”.
Also, in FIG. 18, from the module information 53A included in the update information 51A, I
It is determined that the modules with the D code “MJ01” and the ID code “MJ04” should be upgraded, and are upgraded.

Next, the processing operation [3-A] performed by the CPU 32 in the AV / navigation apparatus 31 will be described based on the flowchart shown in FIG. This processing operation [3-A] is performed when it is determined that the main program needs to be updated.

First, the server 41 is requested to transmit update information of the main program that needs to be updated (step S71). This request includes an ID code “PRxx” of the main program that needs to be updated, information indicating the current version of the main program in the AV / navigation device 31, a request code for transmitting update information, The identification code “AVxx” for identification is transmitted to the server 41.

Next, the update information 51A (see FIG. 18) transmitted from the server 41 in response to the request is temporarily stored in the RAM 34 (step S72), and the version update (main program) included in the update information 51A is stored. Based on the information 52 (see FIG. 18), the version of the main program is upgraded (step S73), and then the version information of the ID code “PRxx” is updated by rewriting the main program version information database 8 (step S74). .

Next, based on the module information 53A (see FIG. 18) included in the update information 51A, it is determined whether or not there is a module that should be upgraded among the modules stored in the PROM 33 (see FIG. 18). Step S75).
If it is determined that there is a module that is preferably upgraded, the server 41 is requested to transmit upgrade information of the corresponding module (step S76). On the other hand, if it is determined that there is no module for which version upgrade is preferable, the processing operation [3-A] is terminated as it is. The server 4 includes an ID code “MJxx” of a module that is preferably upgraded, a request code for transmitting upgrade information, and an ID code “AVxx” for identifying the own device.
1 is performed.

Next, module upgrade information transmitted from the server 41 in response to the request is temporarily stored in the RAM 34 (step S77), and it is determined whether or not all the information in response to the request has been received. If it is determined that information to be received remains (step S78), the process returns to step S77.
On the other hand, if it is determined that all the information to be received has been received, the corresponding module is upgraded based on the upgrade information stored in the RAM 34 (step S79).

Here, the module upgrade is performed after all the information to be received is received. However, in another embodiment, the module upgrade is performed sequentially, and the free space of the RAM 33 is reduced. It may be possible to ensure. For example, version upgrade is performed every time reception of each module is completed.

Next, the processing operation [3-S1] performed by the CPU 42 in the server 41 will be described based on the flowchart shown in FIG. The processing operation [3-S1] is an operation performed when a transmission request for update information (of the main program) is received from the AV / navigation apparatus 31.

First, update information 51 (see FIGS. 15 and 16) of the requested main program is read from the update information database 16 (see FIG. 4) (step S81), and then the AV / navigation device 31 (request source) The module information stored in the PROM 33) is read from the module version information database 45 (see FIG. 13) (step S82).

Based on the read module information and update information, the current version of the module stored in the AV / navigation device 31 is compared with the preferred version (step S83), and based on the comparison result, the AV / navigation device 31 is compared. Update information 5 including module information 53A excluding modules that do not require version upgrade in
1A (see FIG. 17) is transmitted to the AV / navigation apparatus 31 (step S84).

Next, the processing operation [3-S2] performed by the CPU 42 in the server 41 will be described based on the flowchart shown in FIG. The processing operation [3-S2] is performed when a module upgrade information transmission request from the AV / navigation apparatus 31 is received.

First, the upgrade information of the requested module is read from the upgrade information database 17 (see FIG. 5) (step S91). To (
Step S92), after that, the module version information database 45 is rewritten,
The ID code “MJxx” in the AV navigation device 31 with the ID code “AVxx”.
"Is updated (step S93).

For example, as shown in FIG. 18, the module with the ID code “MJ01” is the version “
1.1 ”and the module with ID code“ MJ04 ”
When the version is upgraded to “1.2”, the version information corresponding to the ID code “MJ01” of the AV navigation device 31 with the ID code “AV01” of the module version information database 45 is updated to “1.1”, and the ID The version information corresponding to the code “MJ04” is updated to “1.2”.

However, even if the upgrade information is transmitted to the AV / navigation device 31, A
Since it is not known whether the V / navigation device 31 has actually been upgraded, there is a possibility that a deviation occurs between the contents stored in the module version information database 45 and the actual state.

Therefore, in the update system according to another embodiment, the AV / navigation apparatus 31 transmits information indicating that the upgrade has been completed to the server 41, and the module receives the information after the server 41 receives the information. The version information database 45 may be updated.

According to the update system according to the above embodiment (3), on the server 41 side, AV
The current version of the module stored in the navigation device 31 (of the PROM 33) is compared with the preferred version, and the module information to be upgraded is transmitted to the AV navigation device 31 based on the comparison result. Is done. Based on the transmitted module information, the version of the module is upgraded. Thereby, not only the upgrade of the main program but also the upgrade of the modules (programs and data) that are called from the main program and used can be realized.

The comparison between the current version of the module stored in the AV / navigation apparatus 31 and the preferred version is performed by the server 41 and not by the AV / navigation apparatus 31. Can be reduced.
Further, the AV / navigation apparatus 31 does not have to manage the current version information, so that the configuration can be simplified.

Next, an update system according to Embodiment (4) will be described. However, the update system according to the embodiment (4) has the same configuration as the update system shown in FIG. 12 except for the AV / navigation device 31 and the CPU 32 and PROM 33 constituting the AV / navigation device 31. , AV / navigation device, CPU, and PROM are given different reference numerals, and other explanations are omitted here.

AV / Navigation Device 3 Constructing Update System According to Embodiment (4)
The processing operation [4-A] performed by the CPU 32A in 1A will be described based on the flowchart shown in FIG. Note that the processing from step S101 to S105 is the same as the processing from step S71 to S75 shown in FIG.
That is, a process after determining that there is a module that is preferably upgraded is described.

If it is determined in step S105 that there is a module that is preferably upgraded, the module is displayed on the display unit 7 and notified to the user, whereby the module that the user desires to upgrade is displayed. Is selected (step S106), and the module to be upgraded is selected based on the information obtained from the operation unit 6 (step S107). In some cases, the user may not wish to upgrade any of the modules.

Next, it is determined whether or not a module to be upgraded is selected (step S1).
08) If it is determined that the module to be upgraded is selected, the server 41 is requested to transmit the upgrade information of the corresponding module (step S).
109). On the other hand, if it is determined that the module to be upgraded has not been selected,
The processing operation [4-A] is finished as it is.

Next, module upgrade information transmitted from the server 41 in response to the request is temporarily stored in the RAM 34 (step S110), and it is determined whether or not all the information in response to the request has been received. If it is determined that information to be received remains (step S111), the process returns to step S110.
On the other hand, if it is determined that all the information to be received is received, the corresponding module is upgraded based on the upgrade information stored in the RAM 34 (step S112).

According to the update system according to the above embodiment (4), the user can select the module to be upgraded, so that it is possible to prevent the module from being upgraded that is not desired by the user.

In the update system according to the above embodiments (1) to (4), all modules to be upgraded are handled equally, but in another embodiment, the modules are differentiated. May be. For example, if the vehicle reaches the destination, the AV / navigation apparatus 1 (1A, 31, 31A) is likely to be turned off. Also, the reception of version upgrade information cannot be completed instantaneously, and requires a certain amount of time. Therefore, when the upgrade information is received, the AV / navigation apparatus 1 (1A, 31,
In consideration of the remaining operation time of 31A), the version upgrade information may be received preferentially from the one with the larger information amount or the smaller information amount.

In addition, based on the remaining operating time of the AV / navigation apparatus 1 (1A, 31, 31A), a restriction is added to the transmission request for the upgrade information. You may make it divide | segment. The remaining operation time includes, for example, the time required to reach the destination.

Further, as shown in FIG. 23, the AV / navigation apparatus 1 is transmitted from the server 11 (41).
The importance information 23B of each module is added to the module information 23A included in the update information 21A transmitted to (1A, 31, 31A), and the AV / navigation apparatus 1 (1
A, 31, and 31A) can determine the importance of each module, and according to the order determined based on the importance, the transmission request for the upgrade information and the upgrade of the module may be performed. As a result, it is possible to preferentially receive upgrade information for modules with high importance or to give priority to version upgrades for modules with high importance.

Further, as can be seen from the table shown in FIG. 4, the module with the ID code “MJ01” is called from both the main program with the ID code “PR01” and the main program with the ID code “PR02”. For example, if the module of the ID code “MJ01” is upgraded in accordance with the version upgrade of the main program of the ID code “PR01” during the execution of the main program of the ID code “PR02”, the ID There is a risk of affecting the execution of the main program of the code “PR02”.

Therefore, in the update system according to another embodiment, the module is updated in consideration of the influence on the execution of a program different from the main program to be upgraded, for example, the ID code “ If the main program of PR01 is upgraded, the priority for upgrading the module of the ID code “MJ01” that affects the execution of the main program of the ID code “PR02” may be lowered,
While the main program with the ID code “PR02” is being executed, the version of the module with the ID code “MJ01” may not be upgraded. Or ID code “PR02”
If the main program is not executed, the priority for upgrading the module of the ID code “MJ01” may be increased.

It is the block diagram which showed roughly the principal part of the update system which concerns on embodiment (1) of this invention. It is the figure which showed an example of the memory | storage state in a main program version information database. It is the figure which showed an example of the memory | storage state in a module version information database. It is the figure which showed an example of the memory | storage state in an update information database. It is the figure which showed an example of the memory | storage state in a version upgrade information database. It is the flowchart which showed the exchange of information with the AV navigation apparatus and server which comprise the update system which concerns on embodiment (1). It is the figure which showed update information. It is the figure which showed the update information concretely. It is explanatory drawing for demonstrating that a module is upgraded according to the version upgrade of a main program. It is the flowchart which showed the processing operation which CPU in the AV * navigation apparatus which comprises the update system which concerns on embodiment (1). It is the flowchart which showed the processing operation which CPU in the AV navigation apparatus which comprises the update system which concerns on Embodiment (2) performs. It is the block diagram which showed roughly the principal part of the update system which concerns on embodiment (3). It is the figure which showed an example of the memory | storage state in a module version information database. It is the flowchart which showed the exchange of information with the AV navigation apparatus and server which comprise the update system which concerns on embodiment (3). It is the figure which showed update information. It is the figure which showed the update information concretely. It is the figure which showed the update information concretely. It is explanatory drawing for demonstrating that a module is upgraded according to the version upgrade of a main program. It is the flowchart which showed the processing operation which CPU in the AV * navigation apparatus which comprises the update system which concerns on Embodiment (3). It is the flowchart which showed the processing operation which CPU in the server which comprises the update system which concerns on embodiment (3) performs. It is the flowchart which showed the processing operation which CPU in the server which comprises the update system which concerns on embodiment (3) performs. It is the flowchart which showed the processing operation which CPU in the AV navigation apparatus which comprises the update system which concerns on Embodiment (4). It is explanatory drawing for demonstrating that a module is upgraded according to the version upgrade of a main program.

Explanation of symbols

1, 1A, 31, 31A AV / navigation device 2, 2A, 12, 32, 32A, 42 CPU
3, 3A, 13, 33, 33A, 43 PROM
8 Main program version information database 9 Module information database 11, 41 Server 16 Update information database 17 Upgrade information database 21, 21A, 51, 51A Update information 22, 52 Upgrade information 23, 23A, 53, 53A Module information 23B Importance Information 45 Module version information database

Claims (16)

An update system that updates modules used by being called from a main program stored in an information processing apparatus,
Update information including upgrade information of the main program is distributed from the information distribution device to the information processing device,
Based on the version upgrade information, the main program is configured to be upgraded,
The information processing apparatus is
Based on the preferred version information indicating the version of the module suitable for executing the upgraded main program, the current version of the module stored in the information processing apparatus is compared with the preferred version. Version comparison means;
Update means for updating the module based on the comparison result by the version comparison means,
An update system characterized in that the preferred version information is included in the update information distributed from the information distribution apparatus. The update means
Based on a comparison result by the version comparison unit, a version upgrade information distribution request unit that requests the information distribution apparatus to distribute version upgrade information of a module to be upgraded,
2. The update system according to claim 1, further comprising upgrade means for upgrading the module based on upgrade information distributed in response to the request from the information delivery apparatus. The update means
Module notification means for notifying a user of a module to be upgraded based on the comparison result by the version comparison means;
Module selecting means for selecting a module to be upgraded based on information obtained from the operating means that can be operated by the user;
Upgrade information distribution request means for requesting the information distribution apparatus to distribute the upgrade information of the module selected by the module selection means;
2. The update system according to claim 1, further comprising upgrade means for upgrading the module based on upgrade information distributed in response to the request from the information delivery apparatus. An update system that updates modules used by being called from a main program stored in an information processing apparatus,
Update information including upgrade information of the main program is distributed from the information distribution device to the information processing device,
Based on the version upgrade information, the main program is configured to be upgraded,
The information distribution device is
Current version information storage means storing current version information indicating the current version of the module stored in the information processing apparatus;
Based on the current version information stored in the current version information storage means and the preferred version information indicating the version of the module suitable for executing the upgraded main program, the information processing apparatus Version comparison means for comparing the current version of the module stored in the module with a preferred version;
Based on the comparison result by the version comparison means, the information processing apparatus comprises module information distribution means for distributing module information to be upgraded,
The information processing apparatus is
An update system comprising: update means for updating the module based on module information distributed from the information distribution apparatus. 5. The update system according to claim 4, wherein the update information distributed from the information distribution device includes module information to be upgraded based on a comparison result by the version comparison unit. The update means
Based on the module information distributed from the information distribution device, the upgrade information distribution request means for requesting the information distribution device to distribute the upgrade information of the module to be upgraded,
6. The upgrade apparatus according to claim 4, further comprising upgrade means for upgrading the module based on upgrade information delivered in response to the request from the information delivery apparatus. Update system. The update means
Module notification means for notifying a user of a module to be upgraded based on module information distributed from the information distribution device;
Module selecting means for selecting a module to be upgraded based on information obtained from the operating means that can be operated by the user;
Upgrade information distribution request means for requesting the information distribution apparatus to distribute the upgrade information of the module selected by the module selection means;
6. The upgrade apparatus according to claim 4, further comprising upgrade means for upgrading the module based on upgrade information delivered in response to the request from the information delivery apparatus. Update system. A reception completion judging means for judging whether or not all the upgrade information to be delivered in response to the request by the upgrade information delivery request means has been received,
When it is determined by the reception completion determination means that all the upgrade information to be distributed has been received,
The update system according to any one of claims 2, 3, 6, and 7, wherein the version upgrade means upgrades a module. The upgrade means is sequentially updated from the reception of the upgrade information,
The version of a corresponding module is upgraded.
The update system according to any one of items 6 and 7. 7. The upgrade information distribution request means requests distribution of upgrade information according to an order determined based on the amount of information of the upgrade information. The update system according to any one of items 7 and 7. The distribution request restriction means for adding a restriction to the distribution request of the upgrade information by the upgrade information distribution request means based on the remaining operating time of the information processing apparatus. The update system according to any one of items 6, 7, and 10. The update system according to any one of claims 1 to 11, wherein the update means updates modules according to an order determined based on importance of modules. 2. The module according to claim 1, wherein the updating means updates the module based on whether or not there is an influence on execution of a program different from the main program.
The update system according to any one of items 12 to 12. An information processing apparatus that is an information processing apparatus constituting the update system according to claim 1. An information distribution device that is an information distribution device constituting the update system according to any one of claims 1 to 13. An update method for updating a module used by being called from a main program stored in an information processing device,
Information distribution device
Delivering update information including upgrade information of the main program to the information processing apparatus,
The information processing apparatus is
Performing a version upgrade of the main program based on the version upgrade information;
Based on the preferred version information indicating the version of the module suitable for executing the upgraded main program, the current version of the module stored in the information processing apparatus is compared with the preferred version. Steps,
Updating the module based on the result of the comparison,
An update method characterized in that the preferred version information is included in the update information and distributed to the information processing apparatus.

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