KR20220086230A - Difference update method for vehicullr control unit and difference update roll back method - Google Patents

Abstract

A difference updating method of a vehicle controller according to a preferred embodiment of the present invention comprises the steps of comparing data of an old version and a new version, and generating raw difference data including at least three different types of difference data as a result of the comparison; dividing the raw difference data for each memory sector, and generating divided difference data by additionally dividing the overlapping difference data when there is one type of overlapping differential data in at least two or more of the memory sectors; and and updating the old version to the new version by using the divided difference data.

Description

DIFFERENCE UPDATE METHOD FOR VEHICULLR CONTROL UNIT AND DIFFERENCE UPDATE ROLL BACK METHOD

The present invention relates to a differential update method of a vehicle controller, and a differential update rollback method.

Currently, various electronic devices for user convenience are applied to vehicles according to technological development, and an update technology for updating software or information of a micro controller unit (MCU) for controlling various electronic devices is required.

To keep pace with these demands, over-the-air (OTA) update technology that can update software or information of a vehicle controller wirelessly rather than wiredly is being developed.

On the other hand, in the case of the update technology, there is a differential update technology that updates only a changed part of all data for software update of various electronic devices.

This differential update technology is a technology commonly used in Android or Linux file systems that operate on the basis of a high-spec application processor (AP).

However, in the case of a vehicle controller, it has a relatively low-spec CPU and low-capacity memory, and there is a problem that a general differential update technique cannot be applied due to the characteristics of a flash memory for storing software or information.

In order to solve this problem, a differential update technique capable of reducing the size of transmitted data has recently been developed.

On the other hand, in the differential update of the vehicle, matching between the old version of the vehicle controller and the new version for update is important.

For example, when a new version matching the vehicle controller is updated through OTA, defects may occur in some vehicle controllers. At this time, there are many cases in which the vehicle controller that has already been updated needs to be rolled back.

Accordingly, in the case of a vehicle controller that has succeeded in differential update, there is a problem in that it is necessary to re-download the old version and perform a new differential update in order to roll back the update.

Republic of Korea Patent Publication No. 2019-0074346

Accordingly, the present invention has been devised in view of the above circumstances, and when a rollback of the differential update is required due to a defect in the vehicle controller after the differential update of the vehicle controller, it is possible to roll back to the old version without re-downloading the old version of the software. An object of the present invention is to provide a differential update method for a vehicle controller, and a differential update rollback method.

In order to achieve the above object, a difference updating method for a vehicle controller according to a preferred embodiment of the present invention compares data of an old version and a new version, and as a result of the comparison, a raw difference including at least three different types of difference data generating data; dividing the raw difference data for each memory sector, and generating divided difference data by additionally dividing the overlapping difference data when any one type of overlapping difference data exists in at least two or more of the memory sectors; and updating the old version to the new version using the divided difference data.

The at least three different types of data include the same data including size information of the old version and the new version, additional data including size information of the new version and data information of the new version, and the old version It may include deleted data including size information and data information of the old version.

The generating of the divided difference data may include sequentially loading the raw differential data in sector order, calculating old version addresses and new version addresses of the loaded row differential data, and the loaded raw differential data and moving to memory sectors corresponding to the old version address and the new version address.

The generating of the divided difference data may include: when the differential data moved to the memory sector is divided at a sector boundary of the memory corresponding to the old version address or the new version address, the old version sector address as the reference position of the old version and determining the sector address of the new version as a reference location of the new version.

The generating of the divided difference data may include determining a difference cancellation order for each sector in a reverse order of the data movement in consideration of data movement to the memory sector according to the generation of the divided difference data.

The generating of the divided difference data may include including the difference cancellation order and reference positions of the old version and the new version in the divided difference data.

The generating of the divided difference data includes storing the old version address and size information in the old version reference location, and storing the new version address and size information in the new version reference location, when the types of the difference data are 'same'. , and when the type of the difference data is 'addition', the new version address and size information are stored in the new version reference location, and when the type of the difference data is 'delete', the old version address and size information may be stored in the old version reference location.

The divided difference data may be stored in a memory device different from a memory device in which the old version and the raw difference data are stored.

In the updating to the new version, the old version may be updated to the new version by de-differentializing the divided difference data in consideration of the difference cancellation order.

In accordance with a preferred embodiment of the present invention for achieving the above object, there is provided a differential update rollback method for a vehicle controller that is differentially updated from an old version to a new version. and rolling back the new version to the old version by using the divided difference data used for the difference update when a rollback of the new version is required.

The divided difference data may be prepared from raw difference data including at least three different types of difference data as a result of comparing the data of the old version and the new version.

The divided difference data may include difference data of the row difference data divided for each memory sector and differential data of the row difference data that are further divided by overlapping at least two or more of the memory sectors.

The divided difference data includes at least three different types of data, and the at least three different types of data include the same data including size information of the old version and the new version, and the new version. It may include additional data including size information of the new version and data information of the new version, and deleted data including size information of the old version and data information of the old version.

In the rolling back, the new version may be rolled back to the old version according to a pre-prepared order for releasing a difference for each sector and a reverse order for releasing a reverse difference for each sector.

The difference cancellation order may be provided in a reverse order of data movement in consideration of data movement to the memory sector when the divided difference data is generated.

The rolling back may include adding data information of the deleted data to the new version and deleting data information of the additional data from the new version.

According to the differential update method and the differential update rollback method for a vehicle controller according to a preferred embodiment of the present invention, when a differential update rollback is required according to a failure of the vehicle controller after the differential update of the vehicle controller, the old version of the software is re-installed. You can roll back without downloading.

In addition, there is an effect of enabling a fast differential update for a vehicle controller having a low-spec processing device and a low-capacity memory.

In addition, the rollback speed of the update is improved by rolling back the differential update through the reverse differential release method without re-downloading the old version.

In addition, there is an effect of performing rollback through the reverse differential cancellation method using limited resources in the low-spec vehicle controller.

1 is a diagram for explaining a system configuration for differential updating of a vehicle controller.
2 is a flowchart of a differential updating method of a vehicle controller according to a preferred embodiment of the present invention.
3 is a view for explaining a process of generating difference data in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.
4 is a diagram illustrating difference data generated in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.
5 is a diagram illustrating an example of generating difference data in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.
6 is a flowchart illustrating a process of generating divided difference data in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.
7 is a diagram illustrating movement of data according to a difference release in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.
8 is a diagram illustrating a difference cancellation procedure for each sector in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.
9 is a diagram illustrating data stored in each memory area in a method of updating a vehicle controller according to a preferred embodiment of the present invention.
10 is a flowchart of a differential update rollback method of a vehicle controller according to a preferred embodiment of the present invention.
11 is a diagram illustrating data movement according to reverse differential release in a differential update rollback method of a vehicle controller according to a preferred embodiment of the present invention.
12 is a diagram illustrating a reverse differential cancellation procedure for each sector in the differential update rollback method of the vehicle controller according to the preferred embodiment of the present invention.
13 is a diagram illustrating data stored for each memory area in the differential update rollback method of the vehicle controller according to the preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in adding reference numerals to the components of each drawing, the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, preferred embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto and may be variously implemented by those skilled in the art without being limited thereto.

1 is a diagram for explaining a system configuration for differential updating of a vehicle controller.

Referring to FIG. 1 , as a system configuration for differential updating of a vehicle controller, a server 1 providing update information and communicating with the server 1 to update software or information of a controller 20 provided therein a vehicle 10 .

The server 1 and the vehicle 10 may be connected in a wired manner, but may be connected in a wireless manner for differential update using an over-the-air (OTA) method.

The vehicle 10 includes at least one controller 20 , and the controller 20 may perform a function to electrically control a specific part of the vehicle or provide specific information to the driver. The controller 20 may include a main control unit 30 for controlling a main function, a communication unit 40 for communicating with the outside, and a first memory 100 in which software or information providing the main function is stored. . In addition, the controller 20 may further include an additional second memory 200 in addition to the first memory 100 .

In an embodiment, the first memory 100 may be a flash memory, which is a type of non-volatile storage medium, and the second memory 200 may be a random access memory (RAM). Also, the second memory 200 may be a static random access memory (SRAM). However, in the embodiment of the present invention, the first memory 100 and the second memory 200 are not limited to the above.

When it is desired to update software or information stored in the first memory 100 , data for update is transmitted from the server 1 to the main controller 30 through the communication unit 40 , and the main controller 30 transmits the corresponding data is used to update software or information stored in the first memory 100 . In this case, when the main controller 30 updates software or information of the first memory 100 , it may be possible to temporarily store and utilize some data in the second memory 200 .

Meanwhile, in the present invention, the update of the vehicle controller 20 may be performed using a differential update method. In the present invention, the differential update refers to updating software or information using a part having a difference between the file information pre-stored in the controller 20 and the file information to be updated, that is, difference data.

2 is a flowchart of a differential updating method of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 2 , in the differential updating method of the vehicle controller according to the present invention, in step S210 , the main controller 30 compares the old version software or information stored in the controller 20 with the new version software or information to obtain a plurality of difference data of , and raw difference data including a plurality of difference data may be generated.

In operation S220 , the main controller 30 may divide the raw difference data for each memory sector. Also, the main controller 30 may additionally divide differential data overlapping the memory sector. The main controller 30 may generate divided difference data including differential data divided for each memory sector or additionally divided by overlapping the memory sectors.

In step S230 , the main controller 30 may update the old version program to the new version program using the divided difference data.

The differential updating method of the vehicle controller according to the preferred embodiment of the present invention can update a new version of software or information in a sector of the first memory 100 in which software or information is stored without using a large-capacity memory. .

A flash memory having a sector structure has a characteristic that, unlike a RAM in which read/write is free, writing is possible only after erasing a sector at a desired location for writing in the flash memory. As a method of erasing sectors of the flash memory, there are a chip erase method of erasing all sectors at once and a sector erase method of erasing each sector. If the controller 20 has excellent computational power and has a storage medium capable of storing all of the program or information of the new version to be updated, the old version of the program or information (hereinafter simply referred to as 'old version') You can use it) and update the new version of the program or information (hereafter simply the term 'new version' may be used). However, as described above, in the case of the vehicle controller 20, it is not preferable from the cost or design point of view to sufficiently secure the arithmetic capability or the memory. In the present invention, effective update is possible by using a method of generating difference data by comparing the old version with the new version, and updating the controller 20 using the generated difference data. Meanwhile, in the following description, updating an individual sector in which an old version is stored to a new version using difference data will be referred to as 'differential release'.

Depending on the type and size of the difference data, additional sectors are needed to secure a storage space or some sectors are simply erased. It is necessary to consider the order for releasing the difference.

3 is a view for explaining a process of generating difference data in a difference updating method of a vehicle controller according to a preferred embodiment of the present invention, and FIG. 4 is a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention. In this case, it is a diagram showing the generated difference data.

3 and 4 , the main control unit 30 includes an old version of software or information (old version) and a new version of software or information (new version) stored in the sector SA of the first memory 100 . By comparing , difference data can be generated. Here, the first memory 100 includes a plurality of sectors SA including a first sector SA1 , a second sector SA2 , and a third sector SA3 .

The difference data may be comprised of identical, added, and deleted data.

‘Same’ means that the old version and the new version are the same, so that the old version data is maintained. In the case of 'same', since the old version is not changed, only the size information of the old version data is included in the difference data.

‘Added’ means that data that is not in the old version is in the new version. In the case of ‘addition’, new data is added to the old version, so both size and data information are included in the difference data.

‘Delete’ means that the data of the old version is deleted because the data corresponding to the old version does not exist in the new version. In the case of ‘Delete’, both the size and data information are included in the difference data to roll back the difference update.

5 is a diagram illustrating an example of generating difference data in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 5 , an example of raw difference data (RDD) generated by comparing the new version and the old version in the order of sectors of the first memory 100 may be confirmed. The raw difference data RDD is an arrangement of attributes and data obtained by comparing the old version and the new version in the order of sectors.

Also, an example of divided difference data (DDD) divided on a sector basis so that the raw difference data RDD can be stored in a sector of the first memory 100 may be identified.

The raw difference data RDD may include 'same', 'deleted', and 'additional' data. 'Same' data includes only size information. ‘Deleted’ and ‘added’ data includes both size and data information.

In updating the old version to the new version, the raw difference data RDD is preferably reconstructed into the divided difference data DDD.

A process of processing the raw difference data RDD and reconstructing the raw difference data RDD into divided difference data DDD will be described with reference to the example of FIG. 5 . In the present invention, the raw differential data RDD may be divided based on the position of the data sector to be located when the difference is released. Here, when difference data corresponding to 'same', 'deletion', and 'addition' overlap in at least two or more sectors, the overlapping differential data may be further divided based on the sector.

In an embodiment, the ‘erase’ data may be divided into two ‘erase’ data as it overlaps the sector boundary of the old version.

In one embodiment, the 'additional' data may be divided into two 'additional' data as they overlap at the sector boundary of the new version.

In one embodiment, the 'same' data may be divided into three 'same' data as they overlap at the sector boundary of the new version and the old version.

On the other hand, when 'same' and 'delete' data of raw differential data (RDD) are divided according to sector overlap, the old version reference address is stored, and when 'same' and 'addition' data are divided according to sector overlap, new A version reference address may be stored. The old version reference address may be used for differential update, and the new version reference address may be used for rollback of the differential update. The divided difference data DDD may include reference data including an old version reference address and a new version reference address.

In addition, the divided differential data DDD may include 'same', 'addition', and 'deletion' data of the divided row differential data RDD so that at least two sectors do not overlap each other.

Also, in the divided difference data DDD, an old version sector boundary and a new version sector boundary may be sequentially and repeatedly configured.

6 is a flowchart illustrating a process of generating divided difference data in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 6 , in the method of generating the divided differential data (DDD), the start sector addresses of the old version and the new version are detected by sequentially loading the raw differential data (RDD) in sector order, and the start sector address of the new version is The sector position is calculated in alignment and the raw differential data RDD is input to the corresponding sector. At this time, since the 'same', 'delete', and 'addition' data change the address value of the new version, data may overlap in different sectors. The overlapping data is separated according to the sector size and stored in each sector. The calculation of the old version address value is to store the old version address when the sector is transitioned. The address value of the old version is derived to be used as a reference location for the old version when the sector-by-sector differential is released.

The process of generating the divided difference data DDD will be described in detail with reference to FIG. 6 . First, in step S601 , when the raw difference data RDD is generated as a result of comparing the old version and the new version, the sector boundary in the memory to set At this time, the old version start sector is set in the memory based on the address value of the old version. In addition, an old version end sector is set in the memory based on the address value and size of the old version. Also, a new version start sector is set in the memory based on the address value of the old version. In addition, a new version start sector is set in the memory based on the address value and size of the old version.

In step S603, it is determined whether there is a difference by comparing the old version start sector and the new version start sector. In addition, it is determined whether there is a difference by comparing the old version ending sector and the new version ending sector. Here, when the old version start sector and the new version start sector are different, or the old version end sector and the new version end sector are different, step S605 may be performed. Also, when the old version start sector and the new version start sector are the same, and the old version start sector and the new version start sector are the same, step S611 may be performed.

In step S605, the size and data information of the row difference data RDD are divided according to the sector boundary from the start sector to the end sector of each of the old version and the new version.

In step S607, when any one type of data of the raw differential data RDD is divided at the new version boundary, the old version address information (old version reference address) is added to the additional information (reference data) of the divided differential data for each sector DDD. ) is saved. Here, the old version address information is used as the old version reference location when the difference is released (when the difference is updated). In addition, when any one type of data of the raw difference data RDD is divided at the old version boundary, the new version address information (new version reference address) is added to the additional information (reference data) of the divided difference data DDD for each sector. Save. Here, the new version address information is used as a new version reference location when the reverse difference is released (when the differential update is rolled back).

In step S609 , the data divided for each sector of the raw differential data RDD and the data divided by overlapping one sector are stored in the differential data area for each sector of the memory to generate the divided differential data DDD.

Meanwhile, after step S603, in step S611, the divided difference data DDD is generated by adding the difference data divided for each sector of the row difference data RDD from the start sector of the memory.

After step S609 or step S611, in step S613, the data type of the divided differential data DDD is determined in the order of sectors.

In step S615, when the data type is 'same', the old version address and size information are included in the old version reference address of the divided difference data (DDD), and the new version address and size information are included in the new version reference address.

In step S617, when the data type is 'addition', the new version address and size information are included in the new version reference address of the divided difference data (DDD).

In step S619, when the data type is 'delete', the old version address and size information are included in the old version reference address of the divided difference data (DDD).

After steps S615, S617, and S619, in step S621, it is determined whether generation of the divided difference data DDD is completed. When generation of the divided difference data DDD is not completed, the process returns to step S601 and subsequent steps may be re-performed.

7 is a diagram illustrating movement of data according to a difference release in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 7 , when the difference of the divided difference data DDD is released, data movement may occur in which the difference data L moves to the position of the difference data L′.

In addition, data movement in which the difference data M moves to the position of the difference data M' may occur.

Also, data movement in which the difference data N moves to the position of the difference data N' may occur.

8 is a diagram illustrating a difference cancellation procedure for each sector in a method for updating a difference of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 8 , it is possible to confirm a difference release order for each sector for differential update of the vehicle controller. When the divided difference data DDD is generated, data movement may be performed between sectors by 'same', 'addition', or 'deletion' data of the raw difference data RDD. For example, differential data may move from sector 2 to sector 1, sector 3, and sector 4, and differential data may move from sector 7 to sector 6. Also, differential data may be moved from sector 3 to sector 4, sector 5, and sector 6. Here, the movement of differential data from sector 1 to sector 2 is impossible, and movement of differential data from sector 7 to sector 3 is impossible.

The difference cancellation order can be set by setting a sector that emits difference data as a low priority and a sector that receives difference data as a high priority.

In an embodiment, sector 2 and sector 7 are sectors that emit differential data, and the lowest priority may be set. Sectors 1 and 3 are sectors for receiving differential data, and higher priority than sectors 2 and 7 may be set. Meanwhile, sector 3 is a sector that emits difference data, and a lower priority than sector 1 may be set. Sector 4, sector 5, and sector 6 are sectors that receive differential data, and the highest priority may be set.

If the difference cancellation is performed opposite to the movement of the difference data as described above, the difference cancellation of all sectors is possible without loss of the difference data. Here, the sectors on the same vertical line are irrespective of the order. In the differential updating method of the vehicle controller according to the present invention, differential cancellation of the divided differential data DDD may be performed according to a differential cancellation order. In addition, the differential updating method of the vehicle controller according to the present invention is characterized in that it is possible to release the difference of the divided differential data (DDD) without storing data of other sectors referred to and without a separate large-capacity memory.

9 is a diagram illustrating data stored in each memory area in a method of updating a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 9 , according to the differential updating method of the vehicle controller according to the preferred embodiment of the present invention, original (old version) data and difference data are stored in a flash memory area, and the difference is released in a separate flash memory or SRAM area. A buffer (divided difference data) may be stored. This shows that a flash memory area twice as large as ROM data is not required, and a temporary storage buffer is not required. In addition, even if the difference cancellation buffer is configured in the flash memory, the SRAM can be used because it requires a relatively smaller memory than in the prior art, and in this case, the difference cancellation speed is the fastest.

On the other hand, there is a situation in which the rollback of the update is required due to the occurrence of a separate event after the differential update of the vehicle controller is completed. Hereinafter, a differential update rollback method of a vehicle controller in response to such a situation will be described.

10 is a flowchart of a differential update rollback method of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 10 , in the differential update rollback method of the vehicle controller according to the preferred embodiment of the present invention, when rollback of the vehicle controller that has been differentially updated is requested, the divided difference data prepared in advance without re-downloading the old version data It is characterized in that the differential update of the vehicle controller is rolled back using

In operation S1110 , when the differential update of the vehicle controller is completed, the main controller 30 may determine whether rollback of the updated vehicle controller is required. In an embodiment, when a new version matching the vehicle controller is updated through OTA, an update failure may occur in some vehicle controllers. In this case, the main controller 30 may determine that the rollback of the vehicle controller is required.

In operation S1120 , when a rollback of the vehicle controller is required, the main controller 30 may rollback the new version to the old version using pre-prepared divided difference data. Hereinafter, the rollback of the new version to the old version using the divided difference data is defined as inverse difference cancellation.

The main controller 30 may roll back the new version to the old version according to a pre-prepared order for releasing difference for each sector and a reverse order for releasing reverse difference when releasing the reverse difference.

In addition, the main controller 30 may add data information of the 'delete' data to the new version when the reverse difference is released. In addition, the main controller 30 may delete data information of the 'additional' data from the new version when the reverse difference is released.

11 is a diagram illustrating data movement according to reverse differential release in a differential update rollback method of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 11 , when the inverse difference of the divided difference data DDD is released, data movement in which the difference data L′ moves to the position of the difference data L may occur.

In addition, data movement in which the difference data M' moves to the position of the difference data M may occur.

Also, data movement in which the difference data N' moves to the position of the difference data N may occur.

12 is a diagram illustrating a reverse differential cancellation procedure for each sector in the differential update rollback method of the vehicle controller according to the preferred embodiment of the present invention.

Referring to FIG. 12 , it is possible to confirm the reverse difference cancellation order for each sector for rollback of the differential update of the vehicle controller. When the difference of the divided difference data DDD is released, data movement between sectors may be performed by the 'same', 'addition', or 'deletion' data of the divided difference data DDD. For example, differential data may be moved from sector 4 to sector 2 and sector 3, and differential data may be moved from sector 5 to sector 3. Also, differential data may be moved from sector 6 to sector 3 and sector 7 . Also, differential data may be moved from sector 1 to sector 2, and differential data may be moved from sector 3 to sector 2.

The reverse difference cancellation order may be set by setting a sector that emits difference data as a low priority and a sector that receives difference data as a high priority.

In an embodiment, sector 1, sector 4, sector 5, and sector 6 are sectors that emit differential data, and the lowest priority may be set. Sector 3 is a sector that emits differential data, and a lower priority than sector 1 may be set. Sector 2 and sector 7 are sectors that receive differential data, and the highest priority may be set.

As described above, if reverse difference cancellation is performed in the opposite direction to the difference cancellation order, reverse difference cancellation of all sectors is possible without loss of reverse difference data. Here, the sectors on the same vertical line are irrespective of the order. In the differential update rollback method of the vehicle controller according to the present invention, the reverse difference release of the divided difference data DDD may be performed according to the reverse difference release order. In addition, the differential updating method of the vehicle controller according to the present invention is characterized in that data of other sectors referenced is preserved and reverse differential cancellation of divided differential data (DDD) is possible without a separate large-capacity memory.

13 is a diagram illustrating data stored for each memory area in a method for rolling back a differential update of a vehicle controller according to a preferred embodiment of the present invention.

Referring to FIG. 13 , according to the differential update rollback method of the vehicle controller according to the preferred embodiment of the present invention, original (new version) data and reverse differential data are stored in a flash memory area, and in a separate flash memory or SRAM area. A difference cancellation buffer (divided difference data) may be stored. This shows that there is no need to re-download the old version in a situation where a rollback of differential update is required.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains may make various modifications, changes and substitutions within the scope without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are for explaining, not limiting, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments and the accompanying drawings .

Steps and/or operations according to the present invention may occur concurrently in different embodiments, either in a different order, or in parallel, or for different epochs, etc., as would be understood by one of ordinary skill in the art. can

Depending on the embodiment, some or all of the steps and/or operations run instructions, a program, an interactive data structure, a client and/or a server stored in one or more non-transitory computer-readable media. At least some may be implemented or performed using one or more processors. The one or more non-transitory computer-readable media may be illustratively software, firmware, hardware, and/or any combination thereof. Further, the functionality of a “module” discussed herein may be implemented in software, firmware, hardware, and/or any combination thereof.

1: Server
10: vehicle
20: controller
30: main fisherman
40: communication department
100: first memory
200: second memory

Claims (16)

comparing the data of the old version and the new version, and generating raw difference data including at least three different types of difference data as a result of the comparison;
dividing the raw difference data for each memory sector, and generating divided difference data by further dividing the overlapping difference data when there is one type of overlapping differential data in at least two or more of the memory sectors; and
updating the old version to the new version using the divided difference data;
A differential update method of a vehicle controller comprising a. The method of claim 1,
The at least three different types of data include:
The same data including the size information of the old version and the new version, additional data including the size information of the new version and data information of the new version, and the size information of the old version and data information of the old version A differential update method of a vehicle controller, characterized in that it includes the included deleted data. The method of claim 1,
The generating of the divided difference data includes:
sequentially loading the row differential data in sector order;
calculating old version addresses and new version addresses of the loaded raw difference data; and
and moving the loaded raw difference data to memory sectors corresponding to the old version address and the new version address. 4. The method of claim 3,
The generating of the divided difference data includes:
When the differential data moved to the memory sector is divided at the sector boundary of the memory corresponding to the old version address or the new version address, the sector address of the old version is set as a reference location of the old version, and the sector address of the new version is set as the reference position of the new version. A differential updating method of a vehicle controller, comprising the step of determining as a reference position of . 4. The method of claim 3,
The generating of the divided difference data includes:
and determining a difference cancellation order for each sector in a reverse order of the data movement in consideration of data movement to the memory sector according to the generation of the divided difference data. 6. The method of claim 5,
The generating of the divided difference data includes:
and including the difference canceling order and reference positions of the old version and the new version in the divided difference data. 6. The method of claim 5,
The generating of the divided difference data includes:
When the type of the difference data is 'same', the old version address and size information are stored in the old version reference location, the new version address and size information are stored in the new version reference location, and the type of the difference data is In the case of 'addition', the new version address and size information are stored in the new version reference position, and when the type of difference data is 'delete', the old version address and size information are stored in the old version reference position. A differential update method of a vehicle controller, characterized in that The method of claim 1,
The divided difference data is
The differential updating method of the vehicle controller, characterized in that the old version and the raw difference data are stored in a different memory device from that in which the data is stored. 6. The method of claim 5,
The step of updating to the new version is,
and updating the old version to the new version by canceling the divided difference data in consideration of the difference cancellation order. In the differential update rollback method of a vehicle controller differentially updated from the old version to the new version,
when rollback of the new version of the vehicle controller is requested, rolling back the new version to the old version by using the divided difference data used for the difference update;
A differential update rollback method of a vehicle controller comprising a. 11. The method of claim 10,
The divided difference data is
and comparing data of the old version and the new version, and preparing from raw difference data including at least three different types of difference data as a comparison result. 12. The method of claim 11,
The divided difference data is
The differential update rollback method of a vehicle controller, characterized in that it comprises differential data of the row differential data divided for each memory sector and differential data of the row differential data that is further divided by overlapping at least two or more of the memory sectors. 13. The method of claim 12,
The divided difference data includes at least three different types of data,
The at least three different types of data include the same data including size information of the old version and the new version, additional data including size information of the new version and data information of the new version, and the old version The differential update rollback method of the vehicle controller, characterized in that it includes deleted data including the size information of the old version and the data information of the old version. 14. The method of claim 13,
The rollback step includes:
The differential update rollback method of a vehicle controller, characterized in that the new version is rolled back to the old version according to a pre-prepared order for releasing a difference for each sector and a reverse order for releasing a reverse difference for each sector. 15. The method of claim 14,
The difference cancellation order is,
The differential update rollback method of the vehicle controller according to claim 1, wherein when the divided difference data is generated, the data movement to the memory sector is taken into account in a reverse order of the data movement. 14. The method of claim 13,
The rollback step includes:
and adding data information of the deleted data to the new version and deleting data information of the additional data from the new version.

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