KR100693551B1 - Communication terminal and communication network system for partial update of software, partial update method of software, software generating device and method therefor - Google Patents

Abstract

The present invention relates to a communication terminal and a communication network system for partial update of software, a method for partial update of software, and a software generating apparatus and method for the same, comprising: predetermined software consisting of several areas; A memory unit having an identification key for each area; It includes an update means for updating a predetermined area by using the identification key, it is possible to shorten the upgrade time by comparing the version information of the software or the identification key for each area to download and upgrade only the data of the changed area of the software. It would be.

Software, partial update

Description

Terminal and network system for partial updating a software, and partial updating method, and software generating device and method for partial update of software

1 is a schematic diagram of a partial update service system of software embedded in an embedded device according to the present invention;

2 is a block diagram showing the configuration of an embodiment of an identification key generation module of a partial update service system of software embedded in an embedded device according to the present invention;

3A is a block diagram of one embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention;

3B is a block diagram of another embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention.

FIG. 3C is a block diagram illustrating one embodiment of an automatic update engine of software running on an embedded device in the embodiment shown in FIG. 3B.

3D is a block diagram of another embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention.

3E is a block diagram of another embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention;

FIG. 3F is a block diagram illustrating one embodiment of an automatic update engine of software running on an embedded device in the embodiment shown in FIG. 3E.

4 is a flowchart of an embodiment of generating an identification key of a partial update service system of software embedded in an embedded device according to the present invention.

5A is a flowchart of an embodiment of partial download of a system of partial update service of software embedded in an embedded device according to the present invention;

5B is a flowchart of another embodiment in the partial download of the partial update service system of software embedded in the embedded device according to the present invention.

5C is a flowchart of another embodiment of the partial download of the partial update service system of the software embedded in the embedded device according to the present invention.

5d is a flowchart of another embodiment of a partial download of a system of partial update service of software embedded in an embedded device according to the present invention;

6 is an example of a data structure of the software separated by the identification key generation module of the partial update service system of the software embedded in the embedded device and the identification key for each region according to the present invention.

7A illustrates an example of a signal flow in a process in which a download processing module retrieves a file storing region-specific identification keys from an embedded device using data communication;

7B illustrates an example of a signal flow in a process in which a download processing module retrieves a file storing an area identification key from an embedded device by using data communication through an OTA method.

8A illustrates an example of a signal flow in a process of partially downloading data of a region changed by a download processing module to an embedded device using data communication;

8B illustrates an example of a signal flow in a process of partially downloading data of a region in which a download processing module is changed to an embedded device by using data communication through an OTA scheme;

9 shows a data structure of a CMD_RAM command and a response signal thereto;

10 shows a data structure of a CMD_DECOMPRESS command and a response signal thereto;

11 shows a data structure of a CMD_ERASE command and a response signal thereto;

12 illustrates a data structure of a CMD_PROGRAM command and a response signal thereto;

Fig. 13 shows the data structure of the CMD_FINISH command

<Explanation of symbols for the main parts of the drawings>

10: terminal 20: embedded device

100: partial update service system 110: identification key generation module

111: region separation unit 112: identification key generation unit

113: identification key storage unit 120: download processing module

121a: identification key request unit 121b: identification key request processing unit

121c: version information request unit 121d: version information request unit

122a: identification key comparison unit 122b: partial download processing unit

122c: version information comparison unit 122d: partial download processing unit

123a: partial download processing unit 123c: partial download processing unit

200: update engine 210a: identification key request unit

210b: version information request unit 220a: identification key comparison unit

220b: version information comparison unit 230a: partial download processing unit

230b: Partial download processor

The present invention relates to a communication terminal and a communication network system for partial update of software, to a method for partially updating the software, and to an apparatus and method for generating a software therefor. The present invention relates to software update technology, and more particularly, to a software embedded in an embedded device. It relates to a technique that allows you to find only the parts that have changed and to download only those parts that have changed.

Embedded devices are devices in which software such as mobile phones and PDAs are embedded in the chip.

When upgrading the software embedded in such an embedded device, when a customer visits the relevant embedded device office and requests it, the administrator downloads the software by connecting the customer's embedded device to a terminal such as a computer that upgrades the software. .

The conventional method of upgrading the software embedded in the embedded device is to check whether the software has been changed by comparing the file embedded in the embedded device with the file providing the download service for the software embedded in the embedded device. If it was determined that the change was made, the upgrade was performed by downloading the changed software to the embedded device.

Therefore, this conventional method has a problem that takes a lot of work time because the entire file must be downloaded when changing the software.

The present invention has been invented to solve the above-described problem, and a unique identification key is assigned to each area of the software separated for each area of a predetermined size, and the changed part of the software is found by using the identification key. Communication terminal and communication network system for partial update of the software to shorten the working time when upgrading the software embedded in the embedded device by only downloading and upgrading the software; The purpose is to provide.

According to an aspect of the present invention for achieving the above object, the present invention comprises a predetermined software consisting of several areas; A memory unit having an identification key for each area; Including the updating means for updating a predetermined area by using the identification key, it is characterized in that to update only the portion where the identification key is different by comparing the identification key for each area of the old version software and the new version software.

According to yet another aspect of the present invention, there is provided a software device comprising: predetermined software consisting of several areas; Transmitting means for transmitting information of the software; Receiving a new version of a predetermined area of the area of the software, including updating means for updating the corresponding area, characterized in that to update only the portion of the identification key is different when comparing the version of the old version and the new version software .

Therefore, it is possible to shorten the work time by finding the changed part of the software embedded in the communication terminal including the embedded device, and partially downloading and upgrading only the data of the area.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

Prior to describing the present invention in detail, the present invention largely updates the software embedded in a communication terminal including an embedded device in two ways.

The first method is to compare the identification keys for each area of the old version software and the new version software, which is composed of several areas, and update only the portions where the identification keys are different.

The second method is to compare the version of the old version software and the new version software, which consists of several areas, and to update only the portions where the identification keys differ.

Next, a specific embodiment of updating the software embedded in the communication terminal including the embedded device by using the above two methods will be described.

1 is a schematic diagram of a partial update service system of software embedded in an embedded device according to the present invention.

As shown in the figure, the partial update service system 100 of software embedded in an embedded device according to the present invention is an identification key generation module 110 that is executed in the manufacturer terminal 10a that manufactures and ships the embedded device 20. And a download processing module 120 that is executed in the business terminal 10b that provides a download service for the software embedded in the embedded device 20.

The identification key generation module 110 divides the software to be downloaded to the embedded device 20 into a region having a predetermined size, generates a unique identification key for each divided region, and stores the generated identification key for each region. do.

That is, the embedded device manufacturer ships the software divided into areas of a certain size and a unique identification key for each divided area so that only the changed parts can be downloaded in the future before the embedded device 20 is shipped. When the software to be mounted on the embedded device 20 is divided into areas having a predetermined size through the identification key generation module 110, a unique identification key is generated for each divided area, and each of them is embedded in the embedded device 20. ) And the manufacturer terminal 10a to form a basis for the partial update service.

The download processing module 120 compares the identification key for each area of the software embedded in the embedded device 20 with the identification key for each area of the software stored in the office terminal 10b that provides the download service. The data of the determined area and the identification key are transmitted to the embedded device 20 to change the corresponding area data of the software embedded in the embedded device 20, and update the identification key of the changed area.

Typically, the download processing module 120 upgrades the software installed in the embedded device when the customer visits an after-sales center or a sales office in charge of customer support for the embedded device sold to the customer. ) Request to search for the changed part of the software and to download only the changed part.

The partial update service by the download processing module 120 is a software embedded in the embedded device by transmitting data of the area forcibly changed from the terminal terminal 10b that provides the partial update service to the embedded device 20, such as a mobile phone, etc. It is also possible to update the method, and the embedded device 20 may request a data of the changed area to the sales office terminal 10b that provides the partial update service, and may also automatically update the software embedded in the embedded device.

As mentioned above, the identification key generation module 110 manufactures an embedded device, and in the embedded device manufacturer terminal 10a that ships the software by loading the embedded device, the download processing module 120 is sold to a customer. It is common to be executed in a sales terminal 10b such as an after-sales center or a sales office in charge of customer support for an embedded device.

However, the same office that provides partial update service for efficient management of area-specific identification keys for partial update service or for efficient installation and partial update service of new software when the embedded software is changed to new software. It may be installed and executed on the terminal 10b.

On the other hand, the download processing module 120 may be implemented in an on-the-air (OTA) manner to provide a partial update service for software embedded in an embedded device remotely through a mobile communication data service by interworking the download processing module 120 with a mobile communication system. .

The detailed configuration of the identification key generation module 110 and the download processing module 120 will be described.

2 is a block diagram showing the configuration of an embodiment of an identification key generation module of a partial update service system of software embedded in an embedded device according to the present invention.

As shown in the figure, the identification key generation module 110 includes an area separation unit 111, an identification key generation unit 112, and an identification key storage unit 113.

The area separator 111 divides the software into areas of a predetermined size.

For example, assuming that the size of the software is 16MB, the identification key generation module 110 may divide the software into a predetermined size of 64 KB through the area separation unit 111 and divide the software into 256 areas.

The identification key generation unit 112 generates identification keys for each area separated by the area separation unit 111.

The identification key may be generated in various ways. For example, an identification key for identifying the region may be generated using an MD5 algorithm. In the case of MD5, the key value generated by processing 64 KB of data is 16 bytes.

At this time, it is preferable that the identification key generation unit 112 generates a unique identification key for each area so that key values of different areas are not the same when generating the identification key for each area.

The reason is that if different areas have the same identification key, the identification key for each area of the software embedded in the embedded device 20 and the identification key for each area of the software stored in the office terminal 10b that provides the download service. This is because there is a very high possibility of collision in comparison.

In addition, it is preferable that the identification key generator 112 generates an identification key of less than a certain percentage in comparison with the size of each region when generating the identification key for each region.

The reason is that when the identification key size used for the comparison of the identification keys is very large, the time required for the comparison process and the size of the area for recording the identification keys become large.

When the MD5 algorithm is used, the above two conditions can be satisfied at the same time. The MD5 algorithm is an algorithm used to verify data integrity by making a 128 bit (16 Byte) message abbreviation from input data (one message of any length). MD5 was developed by Ronald Livest, a professor at MIT in the United States for use with digital signature applications, and large files must be compressed in a secure manner before being encrypted with the private key under public key cryptography such as RSA. The MD5 specification is currently specified in IETF RFC 1321. According to the MD5 specification, it is "computatively impossible" that any two messages entered into the MD5 algorithm result in the same message abbreviation, or that the wrong message is produced by some message abbreviation.

For example, the identification key for each region may be a value obtained by hashing each separated region of the corresponding software by a hash function conforming to the MD5 standard.

The identification key storage unit 113 stores the identification key for each area generated by the identification key generation unit 112.

For example, since the identification key for each area generated by the MD5 algorithm is 16 bytes, the size required to store each identification key generated by separating 16 MB of software into areas of 64 KB units is 16 bytes × 256 = 4 KB.

In this case, it is preferable that the identification key storage unit 113 records and stores the identification key for each area generated in a predetermined area of the corresponding software. Alternatively, the identification key storage unit 113 may store the identification key for each area in a memory means such as a hard disk of the corresponding terminal. .

4 illustrates an operation flow of the identification key generation module 110 having the above configuration.

4 is a flowchart of an embodiment of generating an identification key of a partial update service system of software embedded in an embedded device according to the present invention.

The identification key generation module 110 first divides the software into regions of a predetermined size in an area separation step S110.

Next, in the identification key generation step S120, an identification key for each area divided in the area separation step S110 is generated.

At this time, a unique identification key is generated for each region so that key values of different regions are not the same, and an identification key less than a certain percentage is generated in comparison with the size of each region.

Finally, in the identification key storage step (S130), an operation of storing the identification key for each area generated by the identification key generation step (S120).

At this time, it is preferable to record and store the generated identification key for each area in a predetermined area of the corresponding software. Alternatively, the generated identification key for each area may be stored in a memory means of a business terminal providing a download service of the corresponding software.

Therefore, an identification key is generated so that only the changed part can be downloaded.

3A is a block diagram of one embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention.

The download processing module 120 according to the present embodiment is a case where the terminal terminal 10b providing the partial update service updates data by forcibly changing the area of the changed area to the embedded device 20. The identification key request unit 121a ), An identification key comparison unit 122a, and a partial download processing unit 123a.

The identification key request unit 121a requests and receives an identification key for each area from the embedded device 20 in which software is embedded.

For example, if a customer who uses a mobile phone wants to change the software embedded in his or her mobile phone, he or she visits the mobile phone carrier and asks for it. It connects to the office terminal 10b and executes a partial update service system of software embedded in the embedded device according to the present invention.

Then, the download processing module 120 requests and receives an identification key for each area of the software embedded in the mobile phone of the corresponding customer through the identification key request unit 121a.

At this time, the identification key of each area of the software embedded in the mobile phone is preferably recorded and stored in a certain area of the corresponding software.In contrast, the identification key is stored in a nonvolatile memory such as a flash ROM of the mobile phone separately from the software. It may be stored.

The identification key comparing unit 122a compares the identification key for each area received by the identification key requesting unit 121a with the identification key for each area of the software to be downloaded.

That is, the download processing module 120 stores each area of the software to be downloaded stored in the terminal terminal 10b that provides the partial update service and the identification key for each area received from the mobile phone of the customer through the identification key comparison unit 122a. The star identification key is compared for each area.

The partial download processing unit 123a transmits the data and the identification key of the area determined by the identification key comparison unit 122a to be inconsistent to the embedded device 20 so as to be embedded in the embedded device 20. Changes the corresponding region data of and updates the identification key of the changed region.

That is, the download processing module 120 extracts the data of the areas which are compared for each area and the identification keys do not match from the software stored in the office terminal 10b that provides the partial update service. Updates the data in the identification key storage area by transferring only the changed part to the mobile phone of the customer and overwriting the corresponding area of the software embedded in it. do.

An operation flow of the download processing module 120 having the above configuration is illustrated in FIG. 5A.

5A is a flowchart of an embodiment of a partial download of a partial update service system of software embedded in an embedded device according to the present invention.

As shown in the figure, the download processing module 120 first requests and receives an identification key for each region from the embedded device 20 in which software is embedded in the identification key request step S210.

Next, the download processing module 120 uses the identification key for each area received by the identification key request step (S210) and the identification key for each area of the software to be downloaded in the identification key comparison step (S220). Compare.

Finally, the download processing module 120 transfers the data and the identification key of the area determined by the identification key comparison step S220 in the partial download processing step S230 to the embedded device 20. It transmits and changes the area data of the software embedded in the embedded device 20, and updates the identification key of the changed area.

Therefore, by doing the above it is possible to find the changed part of the software embedded in the embedded device and to download only the data of the area and upgrade, thereby reducing the work time.

3B is a block diagram of another embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention.

The download processing module 120 according to this embodiment is a case in which the embedded device 20 requests and updates data of the changed area to the business terminal 10b that provides the partial update service, and includes an identification key request processing unit 121b. And a partial download processor 122b.

The identification key request processor 121b receives an identification key request for each area of the software to be downloaded from the embedded device 20 and transmits the requested identification key for each area.

For example, suppose that the mobile explorer of the mobile terminal capable of using the Internet, which is the embedded device 20, is executed in the mobile terminal.

When the customer using the mobile terminal runs the mobile explorer, the business terminal (Mobile Explorer) under the control of the operating system (OS) of the mobile terminal running the automatic update engine (Update Engine) to provide a partial update service (terminal terminal ( 10b) requests identification key of each area of mobile explorer which is software to be downloaded to check whether the mobile explorer has been changed.

 Then, the download processing module 120 transmits the identification key for each area of the mobile explorer through the identification key request processing unit 121b to the corresponding mobile terminal.

The automatic update engine compares the identification key for each area of the embedded mobile explorer with the identification key for each area of the mobile explorer received from the office terminal 10b for each area and compares the data for the areas that do not match. Request transmission to the office terminal 10b.

The partial download processing unit 122b receives a data transmission request of the determined area from the embedded device 20 that the identification key does not match, and transmits data of the requested area to change the software embedded in the embedded device 20. Process to update the area's data and identification key.

That is, the download processing module 120 transmits data of the changed area of the requested mobile explorer through the partial download processing unit 122b according to a data transmission request from the mobile terminal, which is the embedded device 20, so that the update engine is mobile. Make sure to update Explorer. In addition, the download processing module 120 transmits the changed identification key to the mobile terminal through the partial download processing unit 122b so that the update engine can update the data in the identification key storage area.

The update engine is executed in the embedded device 20 to record the data of the changed area transmitted from the download processing module 120 in the RAM of the embedded device 20, and stores flash for storing the software for partial download. (C) updating software mounted in an embedded device by erasing data of a region to be changed from a memory, and writing the data of the changed region stored in the RAM to the erased region of the flash memory. The method may further include updating the region-specific identification key stored in the embedded device 20 by receiving the region-specific identification key from the 120.

Detailed description thereof will be described later.

An operation flow of the download processing module 120 having the above configuration is illustrated in FIG. 5B.

5B is a flowchart of another embodiment of a partial download of a system of partial update service of software embedded in an embedded device according to the present invention.

As shown in the figure, the download processing module 120 first receives an identification key request for each area of software to be downloaded from the embedded device 20 in the identification key request processing step (S310), and then requests each area. Sends a star identification key.

Next, the download processing module 120 receives a data transmission request of an area in which it is determined that the identification keys do not match from the embedded device 20 through the partial download processing step S320, and transmits data of the requested area. Transmits and updates the data and the identification key of the changed area of the software embedded in the embedded device 20.

Therefore, by doing the above, it is possible to shorten the work time by finding the changed part of the software embedded in the embedded device and downloading only the data of the area and upgrading it.

At this time, when the embedded device 20 shown in FIG. 3B requests and updates the data of the changed area of the predetermined software to the sales terminal 10b that provides the partial update service, each software automatically executes the software. You must have an Update Engine.

FIG. 3C illustrates one embodiment of an automatic update engine 200 of software running on an embedded device in the embodiment shown in FIG. 3B.

The automatic update engine 200 includes an identification key request unit 210a, an identification key comparison unit 220a, and a partial download processor 230a.

The identification key request unit 210a requests and receives an identification key for each area of the corresponding software in order to check whether the corresponding software has been changed to the business terminal 10b which is performed dependently on each software and provides the partial update service. .

That is, when the automatic update engine 200 requests the identification key for each area of the corresponding software to the sales terminal 10b in order to check whether the corresponding software has been changed through the identification key request unit 210a, the sales terminal 10b. Transmits an identification key for each area of the requested software through the identification key request processing unit 121b of the download processing module 120a, and the automatic update engine 200 receives the identification key through the identification key requesting unit 210a. .

The identification key comparison unit 220a compares the identification key for each area of the software received from the office terminal 10b with the identification key for each area of the corresponding software stored in the embedded device 20 itself.

That is, when the automatic update engine 200 receives the identification key for each area of the corresponding software from the office terminal 10b, the automatic update engine 200 embeds the identification key for each area of the software received through the identification key comparison unit 220a. (20) It compares with identification key of each area of the corresponding software stored in itself.

The partial download processor 230a requests the office terminal 10b to transmit data for an area where the identification keys do not match by the identification key comparison unit 220a, and receives the changed area data of the corresponding software. Change and update the identification key of the changed area.

That is, when the automatic update engine 200 requests the office terminal 10b through the partial download processing unit 230a to transmit data for an area where the identification keys do not match, by the identification key comparison unit 220a, The office terminal 10b transmits the changed area data of the corresponding software and the identification key of the changed area to the embedded device 20 through the partial download processing unit 122b of the download processing module 120, and the automatic update engine 200. Receives this through the partial download processor 230a, changes the changed area data of the corresponding software, and updates the identification key of the changed area.

Therefore, by doing the above, it is possible to shorten the working time by finding the changed part of the software embedded in the embedded device and downloading only the data of the area and upgrading it.

3D is a block diagram of another embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention.

Unlike the embodiment illustrated in FIG. 3A, the download processing module 120 according to the present embodiment is configured to detect whether the corresponding software has been changed by comparing the version information of the software. The version information request unit 121c includes: The version information comparison unit 122c and the partial download processing unit 123c are included.

The version information request unit 121c requests and receives version information of the software from the embedded device 20 in which the software is embedded.

For example, if a customer who uses a mobile phone wants to change the software embedded in his or her mobile phone, he or she visits the mobile phone carrier and asks for it. It connects to the office terminal 10b and executes a partial update service system of software embedded in the embedded device according to the present invention.

Then, the download processing module 120 requests and receives version information of the software embedded in the mobile phone of the corresponding customer through the version information requesting unit 121c.

At this time, the version information of the software embedded in the mobile phone is preferably stored in the header of the identification key file for each area of the software. The header of the area identification key file will be described later.

The version information comparing unit 122c compares the version received by the version information requesting unit 121c with the version of the software to be downloaded.

That is, the download processing module 120 compares the version information received from the mobile phone of the customer through the version information comparison unit 122c with the version information of the software to be downloaded stored in the business terminal 10b that provides the partial update service. .

When the version information is different by the version comparison unit 122c, the partial download processing unit 123c compares the identification keys for each region of each of the two versions and identifies the identification keys that do not match. The key is transmitted to the embedded device 20 to change the corresponding area data of the software embedded in the embedded device 20 and update the identification key of the changed area.

That is, if the versions do not match, the download processing module 120 extracts the data of the region where the identification keys do not match from the software stored in the office terminal 10b that provides the partial update service, and stores the data in the embedded device 20. Data is stored in the identification key storage area by transferring it to the mobile phone of the customer and overwriting the corresponding area of the software embedded in it. Update the.

An operation flow of the download processing module 120 having the above configuration is illustrated in FIG. 5C.

5C is a flowchart of another embodiment of a partial download of a system of partial update service of software embedded in an embedded device according to the present invention.

As shown in the figure, the download processing module 120 first requests and receives version information of the software from the embedded device 20 in which the software is embedded in the version information request step (S410).

Next, the download processing module 120 compares the version information received by the version information request step S410 in the version information comparison step S420 with the version information of the software mounted on the embedded device 20.

Finally, if the version information is different in the partial download processing step (S430), the download processing module 120 uses the identification key for each area mounted on the embedded device 20 and the identification key for each area of the software to be downloaded for each area. In comparison, the identification key does not match. The data of the determined area and the identification key are transmitted to the embedded device 20 to change the corresponding area data of the software embedded in the embedded device 20 and update the identification key of the changed area. It works.

Therefore, by doing the above it is possible to find the changed part of the software embedded in the embedded device and to download only the data of the area and upgrade, thereby reducing the work time.

3E is a block diagram of another embodiment of a download processing module of a partial update service system of software embedded in an embedded device according to the present invention.

Unlike the embodiment shown in FIG. 3B, the download processing module 120 according to the present embodiment is configured to detect whether the corresponding software has been changed by comparing the version information of the software, and the version information request processing unit 121d, A partial download processing unit 122d is included.

The version information request processor 121d receives a version information request of software to be downloaded from the embedded device 20, and transmits the requested version information.

For example, suppose that the mobile explorer of the mobile terminal capable of using the Internet, which is the embedded device 20, is executed in the mobile terminal.

When the customer using the mobile terminal runs the mobile explorer, the business terminal (Mobile Explorer) under the control of the operating system (OS) of the mobile terminal running the automatic update engine (Update Engine) to provide a partial update service (terminal terminal ( 10b) requests version information of the software to be downloaded to check if the corresponding mobile explorer has changed.

The partial download processing unit 122d receives a data transmission request for a changed area when the identification keys do not match from the embedded device 20 comparing the version information, and transmits data of the requested area to the embedded device 20. Process to update the data and the identification key of the changed area of the built-in software.

That is, the download processing module 120 transmits the data of the changed area through the partial download processing unit 122d according to a data transmission request from the mobile terminal, which is the embedded device 20, and the download processing module 120. The partial download processor 122d transmits the changed identification key to the mobile terminal to update the data in the identification key storage area.

An operation flow of the download processing module 120 having the above configuration is illustrated in FIG. 5D.

5D is a flowchart of another embodiment of a partial download of a system of partial update service of software embedded in an embedded device according to the present invention.

As shown in the figure, the download processing module 120 first receives a version information request of software to be downloaded from the embedded device 20 in the version information request processing step (S510), and transmits the requested version information. .

Then, the download processing module 120 receives a data transmission request for the changed area when the version information does not match from the embedded device 20 through the partial download processing step (S520), the data of the requested area Transmits the data to update the data and the identification key of the changed area of the software embedded in the embedded device (20).

Therefore, by doing the above, it is possible to shorten the work time by finding the changed part of the software embedded in the embedded device and downloading only the data of the area and upgrading it.

At this time, when the embedded device 20 shown in FIG. 3E requests and updates the data of the changed area for the predetermined software to the sales terminal 10b providing the partial update service, each software is dependent on itself. Have an automatic update engine.

FIG. 3F illustrates one embodiment of an automatic update engine 200 of software running on an embedded device in the embodiment shown in FIG. 3E.

The automatic update engine 200 includes a version information requesting unit 210b, a version information comparing unit 220b, and a partial download processing unit 230b.

The version information requesting unit 210b requests and receives version information of the corresponding software in order to check whether the software has been changed by the download processing module 120.

That is, when the automatic update engine 200 requests version information of the corresponding software to the download processing module 120 to check whether the corresponding software has been changed through the version information requesting unit 210b, the download processing module 120 The version information of the requested software is transmitted through the version information request processing unit 121b, and the automatic update engine 200 receives it through the version information requesting unit 210b.

The version information comparison unit 220b compares the version information of the corresponding software received from the download processing module 120 with the version information of the corresponding software stored in the embedded device itself.

That is, when the automatic update engine 200 receives the version information of the corresponding software from the download processing module 120, the version information received through the version information comparison unit 220b and the corresponding stored in the embedded device 20 itself. Compare version information of software.

When the version information comparison unit 220b does not match the version information, the partial download processing unit 230b requests the download processing module 120 to transmit data for the changed area, and changes the area data and The changed region-specific identification key is received from the download processing module 120 to update the corresponding software and the region-specific identification key.

That is, the automatic update engine 200 transmits the information about this to the download processing module 120 when the versions do not match by the version information comparison unit 220b. Then, the download processing module 120 transmits the changed area data of the corresponding software and the identification key of the changed area to the embedded device 20, and the automatic update engine 200 receives the received information through the partial download processing unit 230b. The changed area data of the software is changed, and the identification key of the changed area is updated.

Therefore, by doing the above, it is possible to shorten the work time by finding the changed part of the software embedded in the embedded device and downloading only the data of the area and upgrading it.

In the following, the software mounted on the embedded device is separated by a certain area, a unique identification key is assigned to each area of the software separated by area, and the changed part of the software is found using this identification key to download only the changed area data. Let's give a specific example of upgrading.

First, the total size of the software installed in the embedded device is 16Mb, and the partition unit for dividing the software is 64Kb, which is the minimum unit for erasing the contents recorded in the flash memory (it varies depending on the flash memory, but is usually 16Kb or 64Kb) and the identification key. Suppose we use the MD5 algorithm as the algorithm to generate.

As shown in the upper portion of FIG. 6, the identification key generation module 110 divides the software of 16Mb in units of 64Kb through a region separating unit 111 and divides the total into 256 regions.

FIG. 6 shows an example of a data structure of software separated into areas by the identification key generation module and identification keys for each area.

Then, the identification key generation module 110 generates an identification key for each area divided into 256 areas by the area separation unit 111 through the identification key generation unit 112, in which the MD5 algorithm The hash function used (this hash function can be defined in various ways) is used to process 256 separate pieces of data in 64Kb units to generate 256 hash codes in 16 byte units. These 256 hash codes serve as identification keys for each area.

Thereafter, the identification key generation module 110 stores the identification key for each area through the identification key storage unit 113 as shown in the lower part of FIG. 6. First, information indicating the identification key is indicated in the header. A hash code from the first segment to the last 256 th region is recorded in order to generate an identification key file and to store the identification key file.

That is, since the size of each hash code is 16 bytes, the size required to store 256 hash codes (identification keys) is 4Kb, and a header for recording information and a tail size for notifying the end of the file. Plus is the total capacity of the identification key file.

The header includes flash information, mobile phone information, and file information, and tags indicating the start and end of the header are recorded at the beginning and the end of the header, respectively. . The header may further include version information of the corresponding software.

The flash information includes ROM size, RAM size, embedded file system (EFS) size, block size, EFS start address, RAM start address, and the like.

The mobile phone information includes a model name of the mobile phone and an image file name for use in downloading.

The file information includes a file name to be partially downloaded, a file generation time, a hash method, and the like.

The identification key file and the software generated in this way are stored in the terminal providing the embedded device and the partial update service, respectively.

If the software is changed, the office terminal for separating the changed software by area through the identification key generation module 110 of the manufacturer terminal 10a of the embedded device, generating an identification key file, and providing a partial update service thereof ( Distribute and save as 10b).

Thereafter, when the customer knows that the software has been changed, visits a sales office such as a customer support center, and requests a software upgrade of the embedded device he / she owns, the download processing module 120 executed in the sales terminal 10b The identification key file of the changed software stored in the office terminal 10b itself providing the partial update service is compared with the identification key file stored in the embedded device 20 owned by the customer to search for an area having different identification keys.

At this time, since the size of each hash code of each area by MD5 algorithm is 16 bytes, the data area between the header and the tail of the two identification key files is sequentially read in 16 byte units. It is possible to determine whether the area has changed. When the download processing module 120 detects a region having a different hash code (identification key), the download data module 120 downloads the data of the corresponding area of the software mounted on the corresponding customer embedded terminal from the terminal 10b that provides the partial update service and then changes the data area. And only the changed part of the software embedded in the embedded device 20 is updated by changing the hash code (identification key) of the changed area.

7A and 8A, a partial download processing process between the download processing module 120 and the embedded device 20 of the partial update service system of software embedded in the embedded device according to the present invention will be described in more detail.

When a customer knows that the software has been changed, visits a sales office such as a customer support center, and requests a software upgrade of his or her own embedded device, the sales office manager connects the embedded device 20 to the sales terminal 10b. The download processing module 120 is executed while enabling data communication between the business terminal 10b and the embedded device 20.

First, the download processing module 120 executable in the office terminal 10b loads an identification key file for each region from the embedded device 20 through the process of FIG. 7A.

FIG. 7A illustrates a signal flow of a process in which a download processing module retrieves a file storing an area identification key from an embedded device using data communication.

As shown in the figure, the download processing module 120 transmits request information (AT $ DNINFO) to transmit a file storing an identification key for each area of software to be partially downloaded to the embedded device 20.

Then, the embedded device 20 receiving the same analyzes the header of the file storing the identification key for each region stored therein and transmits the information (szAABBBB) for the file transmission storing the identification key for each region, that is, for each region identification. Information about the total size BBBB of the file storing the key and how many packet units AA transmits the file storing the identification key for each area is transmitted to the download processing module 120.

When the download processing module 120 receiving the transmission information (szAABBBB) from the embedded device 20 transmits a signal to the embedded device 20 confirming transmission (OK) as response information (Response), it is received. An embedded device 20 transmits a file storing an identification key for each area to the office terminal 10b in the transmission packet unit AA.

When all the packet amounts corresponding to the total size (BBBB) of the file storing the identification key for each area are transmitted, the response information (Response) that the download processing module 120 confirms the completion of transmission to the embedded device 20 (OK). ) send.

In this way, the download processing module 120 that receives the file storing the region-specific identification key for the partial download stored in the embedded device 20 stores the region-specific identification key of the software for the partial download stored in the business terminal 10b. The file and the file received from the embedded device 20 are compared to search for the changed part. Since the search for this changed part has been described in detail above, duplicate description thereof will be omitted.

If there is a changed part of the corresponding software, only the data of the area changed to the embedded device 20 through the download processing module 120 is selectively transmitted through the process shown in FIG. 8A to update the software stored in the embedded device.

On the contrary, when the embedded device retrieves a file storing the area identification key from the download processing module using data communication, the signal flow shown in FIG. 7A may be reversed.

8A illustrates a signal flow of a process of partially downloading data of a region changed by a download processing module to an embedded device using data communication.

First, the download processing module 120 reads data of a predetermined size among the data of the changed area of the software to be downloaded, which is stored in the business terminal 10b, and uploads it to a specific address of RAM of the embedded device 20. It is included in the command (CMD_RAM) requesting to be transmitted to the embedded device 20.

The embedded device 20 stores the predetermined size data at a specific address of the RAM of the embedded device 20 according to the transmitted command CMD_RAM, and responds to the download processing module 120 with the response. Send information.

On the other hand, as shown in Figs. 7b and 8b, the download processing module 120 is mounted on a server (not shown) linked to the mobile communication system to partially download the software using the data communication service of the mobile communication system. An area-specific identification key and data of a changed area to be partially downloaded may be implemented by an over-the-air (OTA) method for transmitting the data to the embedded device 20. 7B and 8B illustrate data flows between a base station (BS) and an embedded device.

In this case, unlike the download processing module 120 installed in the sales office terminal 10b, it is possible to provide a partial update service of the software embedded in the embedded device through the mobile communication network, so that the customer does not have to visit the sales office. There is this.

7B and 8B are different from the embodiments shown in FIGS. 7A and 8A only in the location and communication method of the terminal on which the download processing module 120 is mounted. Since it is the same as the embodiment shown in FIGS. 7A and 8A, duplicate description will be omitted.

9 shows a data structure of a CMD_RAM command and a response signal thereof.

As shown in the figure, the CMD_RAM command includes command identification information and RAM address information of an embedded device to store data.

On the other hand, when the download processing module 120 reads the data of a predetermined size among the data of the changed area of the software to be downloaded and stored in the business terminal 10b, compresses it, and transmits it, the download processing module 120 is embedded. A process of transmitting the information CMD_DECOMPRESS necessary for decoding the compressed data to the device 20 to the embedded device 20 is further required.

10 illustrates a data structure of a CMD_DECOMPRESS command and a response signal thereof.

As shown in the figure, the CMD_DECOMPRESS command includes command identification information, RAM address information for storing compressed data, and RAM address information for releasing compressed data.

Next, the download processing module 120 selects a specific area of the flash memory in the embedded device 20 in which the software to be downloaded partially is stored (an area corresponding to data of a predetermined size, that is, an area to be updated). The command CMD_ERASE requesting to be erased is transmitted to the embedded device 20.

Accordingly, the embedded device 20 deletes the corresponding area from its flash memory and transmits response information to the download processing module 120.

11 shows a data structure of a CMD_ERASE command and a response signal thereof.

As shown in the figure, the CMD_ERASE command includes command identification information and flash memory address information of an embedded device to erase data.

Thereafter, the download processing module 120 transmits data of a predetermined size stored in a specific address of RAM of the embedded device 20 to a specific area (erased area) of the flash memory of the embedded device 20. A command (CMD_PROGRAM) for requesting to change the data is recorded and transmitted to the embedded device 20.

Accordingly, the embedded device 20 reads data of a certain size stored in a specific address of its RAM, writes it in a specific area of its flash memory, changes the corresponding area, and updates the download. The response information is transmitted to the processing module 120.

12 illustrates a data structure of a CMD_PROGRAM command and a response signal thereof.

As shown in the figure, the CMD_PROGRAM command may include command identification information, RAM address information of an embedded device in which data to be downloaded is partially stored, and a flash memory of an embedded device in which data to be partially downloaded is recorded. Contains address information.

Subsequently, all of the changed area data of the software to be downloaded in the business terminal 10b is recorded in the corresponding area of the flash memory of the embedded device 20 to update the corresponding software in the embedded device 20. Until the above process is repeated.

When data of all changed areas are transmitted, the download processing module 120 transmits a command (CMD_FINISH) command to terminate all the tasks and reset the embedded device 20 to the embedded device 20.

13 shows the data structure of the CMD_FINISH command.

On the other hand, when the file storing the identification key for each area is loaded, the signal flow shown in Fig. 7A may be reversed.

Accordingly, by selectively downloading only the changed parts of the software embedded in the embedded device, the software embedded in the embedded device can be easily and quickly updated, thereby performing partial update of the software according to the present invention. It is possible to achieve the purpose of the communication terminal and communication network system, a partial update method of software, and a software generating apparatus and method therefor.

In the following claims, description is made using terms of concepts encompassing terms used in the embodiments described in the detailed description.

As described above, the communication terminal and the communication network system for the partial update of the software according to the present invention, the partial update method of the software, and the apparatus and method for generating the software therefor are inherent in each area of the software separated for each area of a predetermined size. It is useful to shorten the working time when upgrading the software embedded in the embedded device by assigning the identification key of the software and finding the changed part of the software by using the software version information or the identification key and downloading and upgrading only the data of the changed area. Has an effect.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the invention within the scope of the appended claims. Do.

Claims (33)

A memory unit for storing predetermined software consisting of several areas and identification keys for each area; Updating means for updating a predetermined area by using the identification key; Communication terminal comprising a. The method of claim 1, And said updating means transmits an identification key of said software when said identification key request is received from the outside. The method of claim 1, And the updating means transmits version information of the software when a version information request for the software is received from the outside. The method of claim 1, And said updating means receives a new version of the predetermined area of the software from the outside and records the new version in the corresponding area. The method according to any one of claims 1 to 4, And determining the update target area by comparing an identification key or a version of an old version with a new version. Transmission means for transmitting information of a predetermined software consisting of several areas; Updating means for receiving a new version of a predetermined area of the software area and updating the corresponding area; Communication terminal comprising a. The method of claim 6, And the information of the software is identification keys respectively assigned to respective areas of the software. The method of claim 6, The information of the software is a communication terminal, characterized in that the version information of the software. The method according to any one of claims 6 to 8, And determining the update target area by comparing an identification key or a version of an old version with a new version. Requesting means for requesting an update of predetermined software consisting of several areas; Updating means for receiving a new version of a predetermined one of the areas of the software and updating the corresponding area; Communication terminal comprising a. The method of claim 10, Each identification key of the software is assigned an identification key, and when the update request, characterized in that the transmission of the identification key as the software information. The method of claim 10, And a version information of the software is transmitted as the software information when an update request is made. The method according to any one of claims 10 to 12, And determining the update target area by comparing an identification key or a version of an old version with a new version. A communication terminal having old software; An update system for storing the new version software of the old version software embedded in the communication terminal, and having transmission means for determining a different portion of the old version and the new version software and transmitting the new version portion of the different portion to the communication terminal; Communication network system comprising a. The method of claim 14, Each of the old version and the new version of the software consists of several areas, each area is assigned a respective identification key, and the update system receives the identification key of the old version software and compares it with the identification key of the new version. A communication network system, characterized by identifying different parts of a new version. The method of claim 14, The determination of the different parts of the old version and the new version is made by comparing the version information of the old version and the new version. A communication terminal having an old version software composed of various areas and requesting an update of the new version software for the old version software; An update system for determining whether to update the old version software in response to the update request of the new version software of the communication terminal, determining a portion of the area of the old version software that needs to be updated, and transmitting the corresponding portion to the communication terminal; Communication network system comprising a. The method of claim 17, Each area of the old version and the new version of the software is assigned a respective identification key, and the update system receives the identification key of the old version of the software and compares with the identification key of the new version, characterized in that for determining the portion that needs to be updated Communication network system. The method of claim 17, The determination of the portion that needs to be updated is made by comparing the version information of the old version and the new version communication network system. In the method of updating the old software to the new software, Comparing the old version software information with the new version software information; Determining different portions of the old and new version software; Recording a new version portion for the different portion in a corresponding area of the old version software; Software portion update method comprising a. The method of claim 20, The software of the old version and the new version is composed of a plurality of areas, each area is assigned an identification key, by comparing the identification key software portion update method, characterized in that different parts of the old version and the new version is determined. The method of claim 20, The determination of the different parts of the old version and the new version is made by comparing the respective version information. Providing old version software information; Receiving a portion of the new version software that is different from the old version software; Recording a portion of the new version software in a corresponding area of the old version software; Software portion update method comprising a. delete delete Comparing the old version software with the new version software and determining different portions from each other; Transmitting regions corresponding to different portions from each other; Receiving an area corresponding to a different part from each other and replacing the corresponding area of the old version of the software; Software portion update method comprising a. The method of claim 26, The software of the old version and the new version is composed of a plurality of areas, each area is assigned an identification key, by comparing the identification key software portion update method, characterized in that different parts of the old version and the new version is determined. The method of claim 26, The determination of the different parts of the old version software and the new version software is made by comparing respective version information. delete delete delete Separating the software into regions of a certain size; Generating an identification key of each area separated by the step; Software generation method comprising a. The method of claim 32, Storing the identification key for each area generated by the step in a corresponding area or a predetermined memory; Software generation method further comprising.

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