JP2022156280A - Information processing device, vehicle, server, time correction method, and system - Google Patents

Abstract

To provide a vehicle, a server, a time correction method, and a system, in which an information processing device updates time information managed by a time information management unit on the basis of second time information acquired from outside of the information processing device.SOLUTION: An information processing device mounted in a vehicle and communicating with a plurality of external devices through a communication network and a wireless communication system includes: a time information management unit that calculates first time information based on self-measured time; a time update unit that updates time information managed by the time information management unit on the basis of second time information acquired from outside of the information processing device; and a time correction unit that corrects the first time information in a predetermined first period on the basis of at least one of a time update flag indicating whether the time update unit has updated the time information managed by the time information management unit during the first period up to a first point in time at which the update is performed and a time update amount performed by the time update unit at the first point in time.SELECTED DRAWING: Figure 3

Description

The present invention relates to an information processing device, vehicle, server, time correction method, and system.

Patent Document 1 describes "a microcomputer having a clock for sleep mode separately from that for normal operation mode of CPU, and a method for correcting the clock".
[Prior art documents]
[Patent Literature]
[Patent Document 1] International Publication No. 2015-093187

A first aspect of the present invention provides an information processing device. The information processing device has a time information management unit for calculating first time information based on the time measured by itself. The information processing device has a time update unit that updates time information managed by the time information management unit based on second time information acquired from outside the information processing device. The information processing device has a time update flag indicating whether the time update unit has updated the time information managed by the time information management unit in a predetermined first period up to a first point in time at which the update is performed. and a time update amount performed by the time updating unit at the first point in time.

The time correction unit calculates the difference between the first time information and the second time information at the first point in time as the first time information when the time update flag indicates that the update is not performed in the first period. The first time information in the first period may be corrected by adding to .

When the time update flag indicates that the time update is not performed during the first period, the time correction unit adds the time update amount performed at the first time point to the first time information, thereby obtaining the first time information. You may correct|amend the 1st time information in a period.

When the time update flag indicates that the time update flag has not been updated in the first period, the time correction unit sequentially counts back the time from the second time information at the first time point to obtain the first time information. Time information may be corrected.

The time correction unit does not have to correct the first time information in the first period when the time update flag indicates that the update was performed in the first period.

The time correction unit may correct the first time information in the first period in which no update is performed based on the amount of time update performed by the time update unit at the first point in time.

The information processing device has an on mode in which the basic functions of the information processing device are operating, an off mode in which the basic functions of the information processing device are stopped, and a power saving mode in which some functions of the information processing device are operating. The first period may be at least part of a period during which the information processing apparatus is in at least one of the off mode and the power saving mode.

It may further include a data processing unit that discards the first time information in the first period when the time update flag indicates that no update has been performed in the first period.

The information processing apparatus may further include a storage unit that associates and stores the corrected first time information and data indicating the state of the information processing device.

The storage unit may have a table in which the time update flag, the time update amount, the corrected first time information, the second time information, and the data indicating the state of the information processing apparatus are associated and input.

In a second aspect of the invention, a vehicle is provided. The vehicle has the information processing device described above.

In a third aspect of the invention, a server is provided. The server has the above information processing device.

A fourth aspect of the present invention provides a time correction method. The time correction method is a time correction method indicating first time information, which is the current time managed by the time information management unit in the information processing apparatus. The time correction method has a time update step of updating the time information managed by the time information management unit based on the second time information outside the information processing apparatus. The time correction method includes a time update flag indicating whether or not the time information managed by the time information management unit has been updated in a predetermined first period in the time update stage, and A time correction step of correcting the first time information in the first time period based on at least one of the time update amount performed at the first time point.

In a fifth aspect of the invention, a system is provided. The system has a time information management unit for calculating first time information based on self-measured time. The system has a time updating unit that updates time information managed by the time information management unit based on second time information acquired from outside the system. a time update flag indicating whether the time updating unit has updated the time information managed by the time information managing unit in a predetermined first period up to a first point in time at which the update is performed; a time update unit that corrects the first time information in the first period based on at least one of the amount of time update performed by the time update unit at the first time point;

It should be noted that the above summary of the invention does not list all the necessary features of the invention. Subcombinations of these feature groups can also be inventions.

It is a figure which shows typically the usage form of the vehicle 50 which concerns on this embodiment. It is a figure which shows the example of implementation of the control system of the vehicle 50 in this embodiment. 2 is a block diagram showing a schematic configuration of an information processing device 200 according to this embodiment; FIG. It is a figure which shows the schematic structure of the table 25a which the memory|storage part 25 in this embodiment has. It is a figure which shows the 1st example of time correction|amendment by the time correction|amendment part 24 in this embodiment. It is a figure which shows the 2nd example of time correction|amendment by the time correction|amendment part 24 in this embodiment. It is a figure which shows the 3rd example of the time correction|amendment by the time correction|amendment part 24 in this embodiment. FIG. 12 is a diagram showing a fourth example of time correction by the time correction unit 24 in this embodiment; FIG. 11 is a diagram showing a fifth example of time correction by the time correction unit 24 in this embodiment; It is a figure which shows the example of the timing chart in this embodiment. An example computer 2200 is shown.

Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. Also, not all combinations of features described in the embodiments are essential for the solution of the invention.

FIG. 1 is a diagram schematically showing a usage pattern of a vehicle 50 according to this embodiment. Vehicle 50 is, for example, an automobile. The vehicle 50 may be an automobile equipped with an internal combustion engine, an electric vehicle, a fuel cell vehicle (FCV), or the like. Vehicle 50 is an example of transportation equipment.

Vehicle 50 includes an information processing device 200 . The information processing device 200 performs data communication with the external device 30a and the external device 30b. In addition, in this embodiment, the external device 30a and the external device 30b may be collectively referred to as the “external device 30”.

The information processing device 200 communicates with the external device 30 through the communication network 90 and the wireless communication system 92 . The communication network 90 includes an IP network such as the Internet, a P2P network, a dedicated line including VPN, a virtual network, and the like. In this embodiment, the wireless communication system 92 is a mobile communication network connected to the communication network 90 . For example, wireless communication system 92 includes a radio access network and a core network.

The external device 30 a includes, for example, a server that provides services to the occupants of the vehicle 50 . For example, the external device 30a includes a server that stores content data such as moving images, a server that provides SNS (Social Network Service), and the like. The information processing device 200 receives moving image data from the external device 30 a in accordance with an instruction from the passenger of the vehicle 50 . In addition, the information processing device 200 receives text information, audio information, image information, video information, etc. as SNS messages from the external device 30a in accordance with instructions from the occupant of the vehicle 50 . The information processing device 200 also transmits text information, audio information, image information, video information, etc. as SNS messages from the occupant of the vehicle 50 to the external device 30a in accordance with instructions from the occupant of the vehicle 50 .

The external device 30b is, for example, a server that provides services related to the controller of the vehicle 50. FIG. The external device 30b may include a server that collects control system related information of the vehicle 50, for example. The control-related information collected by the external device 30 can be exemplified by LIDAR data and the like used for automatic driving of the vehicle 50 . The external device 30b may include, for example, a server that provides the vehicle 50 with control system related information. The control system-related information provided by the external device 30b may include map data used for automatic driving of the vehicle 50, and the like. The information processing device 200 transmits LIDAR data and the like acquired for automatic operation control to the external device 30b. The information processing device 200 receives the map data from the external device 30b regardless of the instruction of the occupant of the vehicle 50 .

FIG. 2 is a diagram showing an implementation example of the control system of the vehicle 50 in this embodiment. The control system 1000 includes a core ECU 1010, a TCU 1020, an AD/ADAS ECU 1021, an information system ECU 1022, an area ECU 1023, an area ECU 1024, a sensor device 1040, an information system device 1041, a drive system device 1030, and a comfort system. Device 1031, alarm system device 1032, vision system device 1033, advanced safety system device 1034, anti-theft system device 1035, lighting system device 1036, door system device 1037, drive position system device 1038, opening and closing system It comprises equipment 1039 , communication network 1080 , communication network 1081 , communication network 1082 , communication network 1084 and communication network 1085 . AD/ADAS ECU1021 is ECU which performs control regarding automatic driving (AD) and an advanced driving assistance system (ADAS).

TCU 1020 is the telematics control unit. TCU 1020 is an example of information processing device 200 . Note that the TCU 1020 and the core ECU 1010 may cooperate to function as the information processing device 200 described above. The AD/ADAS ECU 1021, the information system ECU 1022, the area ECU 1023, and the area ECU 1024 are each an implementation example of the control device 24 described above.

Communication network 1080 , communication network 1081 , communication network 1082 , communication network 1084 , and communication network 1085 are one implementation of in-vehicle network 29 . Communication network 1080, communication network 1081, communication network 1082, communication network 1084, and communication network 1085 may comprise Ethernet networks. TCU 1020, core ECU 1010, AD/ADAS ECU 1021, information system ECU 1022, area ECU 1023, and area ECU 1024 are capable of IP communication via communication network 1080, communication network 1081, communication network 1082, communication network 1084, and communication network 1085. good. Note that communication network 1084 and communication network 1085 may comprise CAN.

Sensor equipment 1040 comprises sensors including cameras, radars and LIDARs. The AD/ADAS ECU 1021 is connected to each sensor included in the sensor device 1040 through a bus, controls each sensor included in the sensor device 1040, and acquires information detected by each sensor.

The information system equipment 1041 includes equipment including a meter device, a display device, a tuner, a player, a DSRC (short range communication) system, a wireless charger, and a USB port. The information system ECU 1022 is connected to each device included in the information system device 1041 through a bus, and controls each device included in the information system device 1041 . The information system equipment 1041 includes information communication equipment, multimedia related equipment, and user interface equipment.

Drive system equipment 1030 includes an electric parking brake (EPB), an electric power steering system (EPS), a vehicle behavior stabilization control system (VSA), a shifter (SHIFTER), a power drive unit (PDU), and an intelligent power unit (IPU). , and a fuel injector (FI). Drive-system device 1030 is connected to each device included in drive-system device 1030 through a bus, and controls each device included in drive-system device 1030 .

The area ECU 1024 controls, through the bus, a comfort system device 1031, an alarm system device 1032, a vision system device 1033, an advanced safety system device 1034, an anti-theft system device 1035, a lighting system device 1036, a door system device 1037, a drive position system device 1038, and a Connected to switching system equipment 1039, comfort system equipment 1031, alarm system equipment 1032, vision system equipment 1033, advanced safety system equipment 1034, anti-theft system equipment 1035, lighting system equipment 1036, door system equipment 1037, drive position system equipment 1038, and controls the devices included in the switching system device 1039 . It is connected to a comfort system device 1031, an alarm system device 1032, a vision system device 1033, an advanced safety system device 1034, an anti-theft system device 1035, a lighting system device 1036, a door system device 1037, a drive position system device 1038, and an opening/closing system device 1039. be. Comfort system equipment 1031, alarm system equipment 1032, visibility system equipment 1033, advanced safety system equipment 1034, anti-theft system equipment 1035, lighting system equipment 1036, door system equipment 1037, drive position system equipment 1038, and opening/closing system equipment 1039 are mainly Including accessories of the vehicle 50 .

Drive system device 1030, sensor device 1040, comfort system device 1031, alarm system device 1032, vision system device 1033, advanced safety system device 1034, anti-theft system device 1035, lighting system device 1036, door system device 1037, drive position system device 1038 , and switching system equipment 1039 are control system equipment of the vehicle 50 . The information system device 1041 is a non-control system device.

Sensor device 1040, driving device 1030, comfort device 1031, alarm device 1032, vision device 1033, advanced safety device 1034, anti-theft device 1035, lighting device 1036, door device 1037, drive position device 1038 , and data communication related to devices included in the switching system device 1039 may have a lower priority than data communication related to devices included in the information system device 1041 .

Note that the vehicle 50 is an example of a mobile object. Mobile bodies include automobiles such as passenger cars and buses, saddle-riding vehicles, aircraft, and transportation equipment such as ships. The mobile object is not limited to transportation equipment, and may be any movable equipment.

Information processing device 200 of vehicle 50 has an on mode, an off mode, and a power saving mode. The ON mode is a mode in which the basic functions of the information processing device 200 of the vehicle 50 are operating, the OFF mode is a mode in which the basic functions of the information processing device 200 of the vehicle 50 are stopped, and the power saving mode is , in which some of the basic functions of the information processing device 200 of the vehicle 50 are in operation. The power saving mode may have a plurality of forms according to the range of functions to be stopped. ) can be switched. If time information with sufficient accuracy can be obtained by this time information management unit, the time information need not be corrected.

FIG. 3 is a block diagram showing a schematic configuration of the information processing device 200 according to this embodiment. As shown in FIG. 3, the information processing device 200 has a time information management unit 22, a time update unit 23, a time correction unit 24, a storage unit 25, a data processing unit 26, and a clock 27. The storage unit 25 has a table 25a.

The time information management unit 22 manages time information in the information processing device 200 of the vehicle 50 . The time information management unit 22 refers to the clock 27 and manages first time information, which is time information inside the information processing apparatus 200 . Here, since the first time information of the time information management unit 22 is the time information inside the information processing device 200, the operation is started from the factory shipment state of the information processing device 200 until the time is updated. The clock may deviate from the Universal Standard Time when power is not available or external radio waves cannot be received.

A clock 27 is a clock that holds time information. The clock 27 has two types, a high-precision clock with a high-precision oscillator and a power-saving clock with a low-precision oscillator. In the on-mode and the power-saving mode, since a high-precision clock with a high-precision oscillator is used, it is expected that the time information of the clock 27 will not deviate. On the other hand, in the off mode, intermittent operation is performed by the power-saving clock, so power is saved, but precision is poor and deviation may occur.

If the first time information of the time information management unit 22 deviates from the universal standard time, for example, the following problems occur. In the information processing device 200, in a service that displays data indicating the state of the vehicle 50 and data related to the vehicle 50 together with the data acquisition time, there is a risk that inaccurate time information will be displayed. In the analysis of the above data, since accurate relative time cannot be calculated, it may not be possible to analyze it as time-series information, or it may adversely affect the analysis result. If the data is divided and recorded in a plurality of files, there is a risk that the time information of the data between the files cannot be linked using the first time information, or that the data is linked erroneously.

The time update unit 23 updates the time information managed by the time information management unit 22 based on the second time information acquired from the outside of the information processing device 200 at predetermined time intervals. The time update unit 23, for example, performs time synchronization with an NTP (Network Time Protocol) server, or synchronizes based on information obtained from various radio waves such as GNSS (global navigation satellite system) and carriers to update the first time. To update the information and prevent the first time information from deviating from the universal standard time.

The time correction unit 24 corrects the first time information of the time information management unit 22 so that the first time information does not deviate from the world standard time. The time correction unit 24 corrects the first time information before the time is updated by the time update unit 23 after starting from the factory shipment state, for example. The time correction unit 24 determines whether the time updating unit 23 has updated the time of the time information managing unit 22 in a predetermined first period up to a first point in time at which the time updating unit 23 updates the time. The first time information in the first period is corrected based on at least one of the time update flag 23a indicating and the time update amount 23b performed by the time update unit 23 at the first point in time. The first period may be at least part of a period during which the information processing apparatus 200 is in at least one of the off mode and the power saving mode.

The time update flag 23a indicates that the time of the time information management unit 22 is updated based on the second time information that the time update unit 23 acquires from the outside after the information processing device 200 returns from the off mode to the on mode. is a flag indicating The time update flag 23a is "1" indicating that the time updating unit 23 has updated the first time information of the time information managing unit 22, or indicates that the first time information of the time information managing unit 22 has not been updated. is represented by "0".

The time update flag 23a becomes "0" when the information processing device 200 shifts from the off mode to the on mode. It becomes "1" when the first time information of 22 is updated. After that, while the information processing apparatus 200 is in the ON mode or the power saving mode, the time update flag 23a maintains the state of "1".

The time update amount 23 b is the time update amount when the time update unit 23 updates the time of the time information management unit 22 based on the second time information acquired from the outside of the information processing device 200 . For example, when the first time information of the information processing device 200 is ahead of the external second time information by "55 seconds", the time updating unit 23 delays the first time information by "55 seconds". is performed, but the time update amount 23b at that time is "55 seconds". In the present embodiment, the time update unit 23b updates in units of one second, but the first time information and the time update amount 23b may be managed and recorded in smaller units (milliseconds or microseconds). You may correct|amend with the precision of the unit.

The storage unit 25 has a table 25a in which the time update flag 23a, the time update amount 23b, the first time information, and the second time information are input in association with each other. The above information and data indicating the state of the information processing apparatus 200 may be associated and input to the table 25a.

FIG. 4 is a diagram showing a schematic configuration of the table 25a of the storage unit 25 in this embodiment. As shown in FIG. 4, the table 25a includes a sequence number, coordinates, first time information as the time of the information processing device 200, a time update flag 23a, a time update amount 23b, and the original time. It has a column of second time information. Although not shown, the table 25a may have a column of data indicating the state of the vehicle 50 in association with the first time information.

In FIG. 4, the rows with sequence numbers "101" and "102" have not been updated (unupdated), and the row with coordinate "30" in sequence number "103" has been updated. Therefore, in the rows whose time has not been updated, from the row with the coordinate “0” in the sequence number “101” to the row with the coordinate “29” in the sequence number “103”, the first time information and the second time information is out of alignment. Specifically, the first time information is "55 seconds" ahead of the second time information. A period until the time update unit 23 updates the time is referred to as a first period.

As shown in FIG. 4, in the first period, the time update flag 23a is "0" indicating that the time of the time information management unit 22 has not been updated. On the other hand, the time update flag 23a is "1" indicating that the time of the time information management unit 22 has been updated after the line of the coordinate "30" in the sequence number "103". After the line of coordinate "30" in sequence number "103", "55 seconds" is input to the time update amount 23b, and the first time information and the second time information match, This indicates that the time information of the information processing device 200 matches the world standard time.

However, the first time information in the first period is time information before the update by the time updating unit 23 and is not subject to updating by the time updating unit 23. Therefore, the first time information in the first period and the The second time information is still inconsistent. In order to resolve this mismatch, the time correction unit 24 corrects the first time information in the first period of the table 25a.

FIG. 5 is a diagram showing a first example of time correction by the time correction unit 24 in this embodiment. As shown in FIG. 5, in the first example, the time correction unit 24 corrects the first time information in the first period based on the time update flag 23a. When the time update flag 23a is "0" indicating that the time update flag 23a has not been updated in the first period, the time correction unit 24 adjusts the difference between the first time information and the second time information at the time of the time update to the first time. is added to the time information of to correct the first time information in the first period. Since the difference between the first time information and the second time information at the time of updating the time is "55 seconds", the time correction unit 24 delays the first time information by "55 seconds" to obtain the first time information. Correct the first time information in the period. On the other hand, the time correction unit 24 does not correct the first time information when the time update flag 23a is "1" indicating that the update is performed during the first period.

In the first example, the time correction unit 24 corrects the first time information in the first period based on the time update flag 23a, so the item of the time update amount 23b is not used. Thereby, the amount of data for correcting the first time information can be reduced.

FIG. 6 is a diagram showing a second example of time correction by the time correction unit 24 in this embodiment. As shown in FIG. 6, in the second example, the time correction unit 24 corrects the first time information in the first period based on the time update amount 23b. The time correction unit 24 corrects the first time information in the first period by adding the time update amount 23b at the first point in time to the first time information. Since the time update amount 23b at the first point in time is "-55 seconds", the time correction unit 24 delays the first time information by "55 seconds" to correct the first time information in the first period. to correct.

In the second example, the time correction unit 24 corrects the first time information in the first period based on the time update amount 23b, so the item of the time update flag 23a is not used. Thereby, the amount of data for correcting the first time information can be reduced.

FIG. 7 is a diagram showing a third example of time correction by the time correction unit 24 in this embodiment. As shown in FIG. 7, in the third example, the time correction unit 24 corrects the first time information in the first period based on the time update flag 23a. When the time update flag 23a is "0" indicating that the time update flag 23a has not been updated in the first period, the time correction unit 24 sequentially backward calculates the time from the second time information at the time of the time update. The first time information in the first period is corrected. The second time information at the time of time update indicates "10 (hour): 02 (minute): 30 (second)". The time correction unit 24 corrects the first time information in the first period by going back one second from the second time information for each coordinate.

In the third example, the time correction unit 24 corrects the first time information in the first period based on the time update flag 23a, so the item of the time update amount 23b is not used. Thereby, the amount of data for correcting the first time information can be reduced.

FIG. 8 is a diagram showing a fourth example of time correction by the time correction unit 24 in this embodiment. As shown in FIG. 8, in the fourth example, the time correction unit 24 corrects the first time information in the first period based on the time update flag 23a and the time update amount 23b. When the time update flag 23a is "0" indicating no update in the first period, the time correction unit 24 adds the time update amount 23b at the time of time update to the first time information. The first time information in one period is corrected. Since the time update amount 23b at the time of time update is "55 seconds", the time correction unit 24 delays the first time information by "55 seconds" to correct the first time information in the first period. .

In the fourth example, the time correction unit 24 corrects the first time information in the first period based on both the time update flag 23a and the time update amount 23b. There is no unused item in table 25a.

FIG. 9 is a diagram showing a fifth example of time correction by the time correction unit 24 in this embodiment. As shown in FIG. 9, in the fifth example, when the time update flag 23a indicates that no update is performed in the first period, the data processing unit 26 updates the information in the first period before the time update. discard. Thereby, the amount of data held by the storage unit 25 can be reduced. This processing is performed when the first time information in the first period is not important.

FIG. 10 is a diagram showing an example of a timing chart in this embodiment. When the ignition switch for activating the information processing device 200 of the vehicle 50 is turned on (ON), the operation mode becomes the ON mode, and when the ignition switch is turned OFF (OFF), the operation mode becomes the power saving mode. In this embodiment, when the operation mode is the ON mode, the time can be updated, and when the operation mode is the power saving mode or the OFF mode, the time cannot be updated. Note that the time update may be enabled when the operation mode is the power saving mode.

At time t1 when the operation mode switches from the power saving mode to the off mode, the basic functions of the information processing device 200 of the vehicle 50 stop, so the first time information starts to deviate from the second time information. In FIG. 9, the first time information is indicated by a solid line, and the second time information is indicated by a broken line following the first time information.

At time t2, when the ignition switch is turned on again and the operation mode becomes the ON mode, the time update flag 23a changes from "1" to "0". During the period from time t1 to t2, the time is in an update disabled state in which the time is not updated by the time updating unit 23 . At time t3, when the time is updated (updatable) by the time updating unit 23, the time update flag 23a changes from "0" to "1".

According to the information processing device 200 in the above embodiment, the time correction unit 24 corrects the first time information in the first period. As a result, for example, in a service that displays data indicating the state of the vehicle 50 and data related to the vehicle 50 together with the data acquisition time, it is possible to prevent inaccurate time information from being displayed to the user. can. In addition, the quality of the analysis/learning data can be improved by excluding data whose acquisition time may be off from the analysis/learning target.

According to the information processing apparatus 200 in the above embodiment, the time update flag 23a and the time update amount 23b are separately managed. As a result, the first time information can be corrected using only one of the time update flag 23a and the time update amount 23b, and unused information can be discarded and stored in the storage unit 25. Data volume can be reduced.

In the above embodiment, the configuration shown in FIG. 3 is described as the configuration inside the information processing device 200 of the vehicle 50 . However, the configuration shown in FIG. 3 may be installed in another device or system, and the processes after FIG. 4 may be executed by another device or system. For example, the above configuration may be installed in a smart phone, and the above process may be executed as a correction method for the time information management unit in the smart phone. A part of the above configuration may be installed in the external device 30a and the external device 30b, which are servers, and the above process may be executed as a correction method for the time information management unit in the server. In this case, write all or part of the first time information, the time update flag 23a, and the time update amount 23b in a file, send it to the server or smartphone, correct it, and set the first time on the server or smartphone side. The information may be corrected to obtain and handle the second time information. Alternatively, if the TCU 1020 does not require the immediacy of uploading, and the TCU 1020 has sufficient computing power and it is desired to reduce the load on the server or smartphone, the TCU 1020 calculates the second time information and then writes it to a file, Or you can send it to the smartphone side.

In the above-described embodiment, at the moment when the time information managed by the information processing device 200 changes to a good time (such as 1-second intervals), the time information managed by the information processing device 200 and the time are updated in advance. A time update flag indicating whether or not the time information managed by the information processing apparatus 200 has been updated during a predetermined first period, The amount of time update performed may be transmitted together and used for time management within another ECU, or may be managed together with internal event information managed by another ECU so that it can be retrieved later. As a result, even an ECU that does not have a time correction function (cannot have a time update function due to cost reasons) can manage time information. For example, along with failure information, it is possible to store the time when the failure occurred. Also, if the information related to correction is held together, it becomes possible to correct or discard it at the time of revision.

FIG. 11 illustrates an example computer 2200 upon which aspects of the invention may be implemented in whole or in part. Programs installed on the computer 2200 may cause the computer 2200 to function as one or more sections of an operation or apparatus associated with an apparatus according to embodiments of the invention, or may Sections may be executed and/or computer 2200 may be caused to execute processes or steps of such processes according to embodiments of the present invention. Such programs may be executed by CPU 2212 to cause computer 2200 to perform certain operations associated with some or all of the blocks in the flowcharts and block diagrams described herein.

Computer 2200 according to this embodiment includes CPU 2212 , RAM 2214 , graphics controller 2216 , and display device 2218 , which are interconnected by host controller 2210 . Computer 2200 also includes input/output units such as communication interface 2222, hard disk drive 2224, DVD-ROM drive 2226, and IC card drive, which are connected to host controller 2210 via input/output controller 2220. there is The computer also includes legacy input/output units such as ROM 2230 and keyboard 2242 , which are connected to input/output controller 2220 through input/output chip 2240 .

CPU 2212 operates according to programs stored in ROM 2230 and RAM 2214, thereby controlling each unit. Graphics controller 2216 retrieves image data generated by CPU 2212 into itself, such as a frame buffer provided in RAM 2214 , and causes the image data to be displayed on display device 2218 .

Communication interface 2222 communicates with other electronic devices over a network. Hard disk drive 2224 stores programs and data used by CPU 2212 within computer 2200 . DVD-ROM drive 2226 reads programs or data from DVD-ROM 2201 and provides programs or data to hard disk drive 2224 via RAM 2214 . The IC card drive reads programs and data from IC cards and/or writes programs and data to IC cards.

ROM 2230 stores therein programs that are dependent on the hardware of computer 2200, such as a boot program that is executed by computer 2200 upon activation. Input/output chip 2240 may also connect various input/output units to input/output controller 2220 via parallel ports, serial ports, keyboard ports, mouse ports, and the like.

A program is provided by a computer-readable medium such as a DVD-ROM 2201 or an IC card. The program is read from a computer-readable medium, installed in hard disk drive 2224 , RAM 2214 , or ROM 2230 , which are also examples of computer-readable medium, and executed by CPU 2212 . The information processing described within these programs is read by computer 2200 to provide coordination between the programs and the various types of hardware resources described above. An apparatus or method may be configured by implementing the manipulation or processing of information in accordance with the use of computer 2200 .

For example, when communication is performed between the computer 2200 and an external device, the CPU 2212 executes a communication program loaded in the RAM 2214 and sends communication processing to the communication interface 2222 based on the processing described in the communication program. you can command. The communication interface 2222 reads transmission data stored in a transmission buffer processing area provided in a recording medium such as the RAM 2214, the hard disk drive 2224, the DVD-ROM 2201, or an IC card under the control of the CPU 2212, and transmits the read transmission data. Data is transmitted to the network, or received data received from the network is written to a receive buffer processing area or the like provided on the recording medium.

In addition, the CPU 2212 causes the RAM 2214 to read all or necessary portions of files or databases stored in external recording media such as a hard disk drive 2224, a DVD-ROM drive 2226 (DVD-ROM 2201), an IC card, etc. Various types of processing may be performed on the data in RAM 2214 . CPU 2212 then writes back the processed data to the external recording medium.

Various types of information, such as various types of programs, data, tables, and databases, may be stored on recording media and subjected to information processing. CPU 2212 performs various types of operations on data read from RAM 2214, information processing, conditional decision making, conditional branching, unconditional branching, and information retrieval, as specified throughout this disclosure and by instruction sequences of programs. Various types of processing may be performed, including /replace, etc., and the results written back to RAM 2214 . In addition, the CPU 2212 may search for information in a file in a recording medium, a database, or the like. For example, if a plurality of entries each having an attribute value of a first attribute associated with an attribute value of a second attribute are stored in the recording medium, the CPU 2212 determines that the attribute value of the first attribute is specified. search the plurality of entries for an entry that matches the condition, read the attribute value of the second attribute stored in the entry, and thereby associate it with the first attribute that satisfies the predetermined condition. an attribute value of the second attribute obtained.

The programs or software modules described above may be stored in a computer readable medium on or near computer 2200 . Also, a recording medium such as a hard disk or RAM provided in a server system connected to a dedicated communication network or the Internet can be used as a computer-readable medium, thereby providing the program to the computer 2200 via the network. do.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the scope of claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

The execution order of each process such as actions, procedures, steps, and stages in the devices, systems, programs, and methods shown in the claims, the specification, and the drawings is particularly "before", "before etc., and it should be noted that they can be implemented in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the specification, and the drawings, even if the description is made using "first," "next," etc. for the sake of convenience, it means that it is essential to carry out in this order. not a thing

22 time information management unit 23 time update unit 24 time correction unit 25 storage unit 25a table 26 data processing unit 27 clocks 30a, 30b external device 50 vehicle 90 communication network 92 wireless communication system 200 information processing device 1010 core ECU
1020 TCUs
1021 AD/ADAS ECU
1022 information system ECU
1023 Area ECU
1024 Area ECU
1030 drive system device 1031 comfort system device 1032 alarm system device 1033 vision system device 1034 advanced safety system device 1035 anti-theft system device 1036 light system device 1037 door system device 1038 drive position system device 1039 switch system device 1040 sensor device 1041 information system device 1080 Communication network 1081 Communication network 1082 Communication network 1084 Communication network 1085 Communication network

Claims (14)

An information processing device,
a time information management unit for calculating first time information based on self-measured time;
a time update unit that updates the time information managed by the time information management unit based on second time information acquired from outside the information processing device;
a time update flag indicating whether the time update unit has updated the time information managed by the time information management unit in a predetermined first period up to a first time point at which the update is performed; a time correction unit that corrects the first time information in the first period based on at least one of: a time update amount performed by the time updating unit at the first point in time;
An information processing device. The time correction unit corrects the difference between the first time information and the second time information at the first point in time when the time update flag indicates that the update has not been performed in the first period. 2. The information processing apparatus according to claim 1, wherein said first time information in said first period is corrected by adding a difference to said first time information. The time correction unit adds the time update amount performed at the first time point to the first time information when the time update flag indicates that the update is not performed during the first period. 3. The information processing apparatus according to claim 1, wherein said first time information in said first period is corrected by: When the time update flag indicates that the update has not been performed during the first period, the time correction unit sequentially counts back the time retroactively from the second time information at the first time point. 2. The information processing apparatus according to claim 1, wherein said first time information is corrected by: 5. The method according to any one of claims 1 to 4, wherein the time correction unit does not correct the first time information in the first period when the time update flag indicates that the update was performed in the first period. The information processing apparatus according to any one of items 1 and 2. wherein the time correction unit corrects the first time information in the first period in which the update is not performed based on the amount of time update performed by the time update unit at the first time point; Item 1. The information processing apparatus according to item 1. The information processing device has an on mode in which the basic functions of the information processing device are operating, an off mode in which the basic functions of the information processing device are stopped, and a part of the functions of the information processing device is operating. wherein the first period is at least part of a period during which the information processing apparatus is in at least one of the off mode and the power saving mode. 7. The information processing device according to any one of 6. 8. The data processing unit that discards the first time information in the first period when the time update flag indicates that the update is not performed in the first period. The information processing device according to any one of . 9. The information processing apparatus according to any one of claims 1 to 8, further comprising a storage unit that associates and stores the corrected first time information and data indicating the state of the information processing apparatus. The storage unit receives the time update flag, the time update amount, the corrected first time information, the second time information, and data indicating the state of the information processing device in association with each other. 10. The information processing device according to claim 9, comprising a table. A vehicle comprising the information processing device according to any one of claims 1 to 10. A server comprising the information processing device according to claim 1 . A time correction method indicating first time information that is the current time managed by a time information management unit in an information processing device,
a time update step of updating the time information managed by the time information management unit based on second time information outside the information processing device;
a time update flag indicating whether or not the time information managed by the time information management unit has been updated in a first period predetermined in the time update step; a time correction step of correcting the first time information in the first period based on at least one of a time update amount performed at a first point in time;
A time correction method, comprising: a system,
a time information management unit for calculating first time information based on self-measured time;
a time update unit that updates the time information managed by the time information management unit based on second time information acquired from outside the system;
a time update flag indicating whether the time update unit has updated the time information managed by the time information management unit in a predetermined first period up to a first time point at which the update is performed; a time correction unit that corrects the first time information in the first period based on at least one of: a time update amount performed by the time updating unit at the first point in time;
a system.

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