Apparatus and method for controlling drive of vehicle

CROSS-REFERENCE TO RELATED APPLICATIONS

FIELD

0001The present invention relates to an apparatus and a method for providing a function of changing a lane for a vehicle.

BACKGROUND

0002The statements in this section merely provide background information related to the present invention and may not constitute prior art.

0003With the development of vehicle industry, an autonomous driving system and a driving assist system, which partially allows autonomous driving, (hereinafter, autonomous driving and driving assist are collectively referred to as "autonomous driving" for the convenience of explanation) have been developed. The autonomous driving system may provide various functions such as maintaining a set speed, maintaining a distance between vehicles, maintaining a lane, and changing a lane. The autonomous driving system may perform autonomous driving by using various devices such as a sensor to sense an external environment of a vehicle, a sensor to sense information about the vehicle, a global positioning system (GPS), a detailed map, a system for detecting the state of a driver, a steering actuator, an acceleration/deceleration actuator, a communication circuit, and a control circuit (e.g., an electronic control unit (ECU)). The autonomous driving system may change the lane based on, for example, the input of the driver. <patcit id="pcit0001" dnum="US2017240172A1"><text>US 2017/240172 A1</text></patcit> discloses such a driving assist system that provides both lane maintaining and lane changing functions.

SUMMARY

0004The present invention addresses a control strategy of ensuring the safety of a driver of a vehicle changing a lane and the safety of a driver of a neighboring vehicle, when the lane is changed. The control strategy may have the limitation on time and need to consider various cancelation conditions of the lane change due to safety concerns.

0005The present invention has been made to solve the above-mentioned problems occurring in the prior art while advantages achieved by the prior art are maintained intact.

0006An aspect of the present invention provides an apparatus and a method for performing a vehicle control strategy, capable of ensuring the safety of a vehicle and the safety of a neighboring vehicle when a lane is changed.

0007The technical problems to be solved by the present inventive concept are not limited to the aforementioned problems, and any other technical problems not mentioned herein will be clearly understood from the following description by those skilled in the art to which the present invention pertains.

0008According to an aspect of the present invention an apparatus for controlling drive of a vehicle may include: at least one input device configured to receive an input from a driver of the vehicle, and a control circuit electrically connected with the at least one input device. The control circuit may perform a lane keeping control on a driving lane of the vehicle for a first time duration, when receiving a first input for changing a lane from the driver through the at least one input device, may perform a line access control such that the vehicle moves toward a line positioned in a direction of a target lane for the changing of the lane, after completing the lane keeping control for the first time duration, when receiving a second input for changing the lane from the driver through the at least one input device after receiving the first input, and may perform a lane entrance control toward the target lane when the line access control is completed within a second time duration.

0009According to one form, the at least one input device may include a first input device and a second input device. The first input may be received through the first input device, and the second input may be received through the second input device.

0010According to another form, the first input device may be a turn signal lever, and the second input device may be a steering wheel, a switch, or a button.

0011According to another form, the apparatus may further include an output device, and the control circuit may output a message associated with changing the lane through the output device, when receiving the first input.

0012According to another exemplary form, the control circuit may stop the lane change, when a specified cancelation condition is satisfied while the lane keeping control or the line access control is being performed.

0013According to another form, the specified cancelation condition may be satisfied: when a dangerous situation is sensed; when a system is shut down by the driver; when the system reaches a limit situation; when hands-off of the driver is sensed; when a turn signal lamp is turned off by the driver; when initiation of the changing of the lane is delayed; or when lateral-movement is discontinuous.

0014According to another form, the specified cancelation condition may be satisfied when it is predicted that completion of the line access control is impossible within the second time duration.

0015According to another form, the control circuit may stop changing the lane and may continuously perform the lane keeping control on the driving lane, when the specified cancelation condition is satisfied during the lane keeping control.

0016According to another form, the control circuit may stop the lane change and may perform a lane return control to return the vehicle to a centerline of the driving lane on the driving lane, when the specified cancelation condition is satisfied during the line access control.

0017According to another form, the control circuits may stop the lane return control, when the specified cancelation condition is canceled during the lane return control, and may perform the line access control, when the first input and the second input are received.

0018According to another form, the apparatus may further include an output device, and the control circuits may output a warning through the output device and maintains the lane entrance control, when the specified cancellation condition is satisfied during the lane entrance control.

0019According to another form, the specified cancelation condition may be satisfied when it is predicted that completion of the lane entrance control is impossible for a third time duration.

0020According to another form, the control circuit may perform the lane keeping control on the target lane, when completing the lane entrance control within a third time duration.

0021According to another aspect of the present invention a method for controlling drive of a vehicle may include: performing, by a control circuit, a lane keeping control on a driving lane of the vehicle for a first time duration, when receiving a first input for changing a lane from the driver of the vehicle; when receiving a second input for changing the lane from the driver after receiving the first input, performing a line access control such that the vehicle moves toward a line positioned in a direction of a target lane for the changing of the lane, after the lane keeping control is completed for the first time duration; and performing, by the control circuit, a lane entrance control toward the target lane when the line access control is completed within a second time duration.

0022According to another form, the method may include stopping, by the control circuit, the lane change, when a specified cancelation condition is satisfied while the lane keeping control or the line access control is being performed.

0023According to an exemplary form, stopping the lane change may include stopping changing the lane and continuously performing the lane keeping control on the driving lane, when the specified cancelation condition is satisfied during the lane keeping control.

0024According to another exemplary form, stopping the lane change may include stopping changing the lane and performing a lane return control to return the vehicle to a centerline of the driving lane, when the specified cancelation condition is satisfied during the line access control.

0025According to another form, the method may include stopping the lane return control, when the specified cancelation condition is canceled during the lane return control, and performing the line access control, when the first input and the second input are received.

0026According to another form, the method may further include outputting a warning through an output device, and maintaining the lane entrance control, when the specified cancelation condition is satisfied during the lane entrance control.

0027According to other form, the method may further include performing, by the control circuit, the lane keeping control on the target lane, when the lane entrance control is completed for a third time duration.

0028Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.

DRAWINGS

0029In order that the invention may be well understood, there will now be described various forms thereof, given by way of example, reference being made to the accompanying drawings, in which: <ul id="ul0001" list-style="none" compact="compact"><li><figref idref="f0001">FIG. 1</figref> is a block diagram illustrating the component of an apparatus for controlling the drive of a vehicle;</li><li><figref idref="f0002">FIG. 2</figref> is a block diagram illustrating components included in a vehicle;</li><li><figref idref="f0003">FIG. 3</figref> is a view illustrating an exemplary operation of an apparatus for controlling the drive of a vehicle;</li><li><figref idref="f0004">FIG. 4</figref> is a view illustrating an exemplary operation of an apparatus for controlling the drive of a vehicle;</li><li><figref idref="f0005">FIG. 5</figref> is a view illustrating an exemplary operation of an apparatus for controlling the drive of a vehicle;</li><li><figref idref="f0006">FIG. 6</figref> is a flowchart illustrating a method for controlling the drive of a vehicle;</li><li><figref idref="f0007">FIG. 7</figref> is a flowchart illustrating a method for controlling the drive of a vehicle; and</li><li><figref idref="f0008">FIG. 8</figref> illustrates a block diagram illustrating a computing system to control the drive of a vehicle.</li></ul>

0030The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present invention in any way.

DETAILED DESCRIPTION

0031It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

0032In addition, in the following description of the present invention a detailed description of well-known features or functions will be ruled out in order not to unnecessarily obscure the gist of the present invention.

0033In describing components of exemplary forms of the present invention the terms 1^st, 2^nd, first, second, A, B, (a), (b), and the like may be used herein. These terms are only used to distinguish one component from another component, but do not limit the corresponding components irrespective of the order or priority of the corresponding components. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meanings as those generally understood by those skilled in the art to which the present invention pertains. Such terms as those defined in a generally used dictionary are to be interpreted as having meanings equal to the contextual meanings in the relevant field of art, and are not to be interpreted as having ideal or excessively formal meanings unless clearly defined as having such in the present application.

0034<figref idref="f0001">FIG. 1</figref> is a block diagram illustrating the component of an apparatus for controlling the drive of a vehicle, according to an exemplary form of the present invention.

0035Referring to <figref idref="f0001">FIG. 1</figref>, according to the invention, an apparatus 100 for controlling the drive of a vehicle (vehicle drive controlling apparatus) includes a sensor 110, an input device 120, an output device 130, and a control circuit 140. The vehicle drive controlling apparatus 100 of <figref idref="f0001">FIG. 1</figref> may be a part of an autonomous driving system and may be mounted in the vehicle.

0036The sensor 110 is configured to sense information on an external environment of a vehicle and information on a vehicle having the vehicle drive controlling apparatus 100 mounted therein. The sensor 110 may sense an advancing vehicle, a rear vehicle, a line of a lane, another external object, and the like, and may sense the speed of the vehicle, a steering angle, a wheel speed, a yaw rate, and the like.

0037The input device 120 is configured to receive the input from a driver of the vehicle. The input device 120 may be configured to, for example, receive a command for changing a lane from the driver. The input device 120 may include, for example, a first input device and a second input device. The first input device may be, for example, a turn signal lever, and the second input device may be, for example, a steering wheel, a switch or a button. For another example, the vehicle may include one input device to receive the command for changing the lane, and the first input device and the second input device may be the same type of input devices.

0038The output device 130 is configured to output information that is able to be sensed by the driver inside the vehicle. The output device 130 may include, for example, a speaker, a display, and/or a vibration motor.

0039As not illustrated in <figref idref="f0001">FIG. 1</figref>, the vehicle drive controlling apparatus 100 may further include a steering device, an acceleration device, and a deceleration device.

0040The control circuit 140 is electrically connected with the sensor 110, the input device 120, and the output device 130. The control circuit 140 may control the sensor 110, the input device 120, and the output device 130, and may perform various data processing and various computations. The control circuit 140 may be, for example, an electronic control unit (ECU), a micro-controller unit (MCU), or a sub-controller mounted in the vehicle.

0041According to another form, the control circuit 140 may perform a control operation of maintaining a lane (lane keeping control). The control circuit 140 may perform, for example, lane keeping control by using a driving assist system on a dedicated road to a vehicle.

0042According to the invention the control circuit 140 is configured to receive a first input of a driver for changing a lane through the input device 120. The control circuit 140 may receive the first input through the first input device. For example, the control circuit 140 may receive an input for the turn signal lever by an action of a driver intending to change the lane.

0043According to the invention, the control circuit 140 is configured to perform the lane keeping control for a first time duration, when receiving the first input. The control circuit 140 may flicker a turn signal lamp, when receiving the first input. The control circuit 140 is configured to continuously perform the lane keeping control for the first time duration (e.g., one second) without instantly moving the vehicle in a lateral direction. The vehicle drive controlling apparatus 100 may notify the intention of the driver to change the lane to a neighboring vehicle while continuously performing the lane keeping control for the first time duration. Accordingly, safety can be ensured when the lane is changed.

0044According to another exemplary form, the control circuit 140 may output a message associated with the changing of lane by using the output device 130, when receiving the first input. For example, the control circuit 140 may output a message of notifying the commencement of changing of the lane onto a display after receiving the first input.

0045According to another exemplary form, the control circuit 140 may stop changing the lane, if a specified cancelation condition is satisfied while the lane keeping control is being performed. For example, the specified cancelation condition may be satisfied when a dangerous situation (e.g., the infringement of a safety distance) is sensed, when a system is shut down by a driver, when a system reaches a limit situation (e.g., the system fails to sense a line of a lane), when the hands-off of the driver is sensed, when a turn signal lamp is turned off by the driver, when the commencement of the changing of the lane is delayed (e.g., within 10 second after the first input is received), when the lateral-movement is discontinuous. For another example, the cancelation condition may be satisfied only when the completion of the line access control is impossible within a second time duration (e.g., 5 seconds or 10 seconds). When it takes an excessive long time to perform the line access control, the safety may be reduced. Accordingly, the above-described cancelation condition may be set. For example, when the second input is delayed after the first input is received, it may be impossible to complete the line access control within the second time duration. In this case, the cancelation condition may be satisfied while the line access control is being performed. The control circuit 140 may calculate an expected time (time to line touch; TLC) that it takes to complete the line access control. When the calculated TLC is greater than a remaining time that it takes to change the lane, the cancelation condition is determined as being satisfied. TLC may be DLC/V_y or LC. In this case, DLC, which represents "distance to lane crossing", refers to a distance between a line and a first tire of the vehicle passing through the line. The remaining time that it takes to change the lane may be obtained by subtracting time, which is elapsed from the first input, from the second time duration.

0046According to another form, the control circuit 140 may stop changing the lane and may continuously perform the lane keeping control, if a specified cancelation condition is satisfied while the lane keeping control is being performed. The control circuit 140 may turns off the turn signal lamp and may perform the lane keeping control similarly to the case before the lane is changed The control circuit 140 may automatically cancel the changing of the lane, when the cancelation condition is satisfied and thus the lane is not safely changed.

0047According to the invention, the control circuit 140 may receive a second input of a driver for changing a lane through at least one input device 120 after the first input is received. The control circuit 140 may receive the second input through the second input device. For example, the control circuit 140 may receive an input for a steering wheel, a switch, or a button by an action of a driver intending to change the lane. The vehicle drive controlling apparatus 100 may exactly recognize the intention of the driver to change the lane by receiving the first input and the second input.

0048According to the invention, the control circuit 140 is configured to perform a control operation of accessing a line (i.e.,line access control) to move the vehicle toward a line positioned in a direction of a target lane for changing the lane, after completing the lane keeping control for the first time duration, when receiving the second input. For example, the control circuit 140 may perform the line access control after continuously performing the lane keeping control for the first time duration when the second input is received within the first time duration. For another example, the control circuit 140 may perform the line access control immediately when the second input is received after the first time duration is elapsed. The line access control is a control operation of moving the vehicle toward the line, which is positioned in the direction of the target lane, in a lateral direction on a driving lane.

0049According to another form, the control circuit 140 may stop changing the lane, if a specified cancelation condition is satisfied while the line access control is being performed. The cancelation condition set when the line access control is being performed may be the same as the cancelation condition set when the lane keeping control is being performed.

0050According to an exemplary form, the control circuit 140 may stop changing the lane and may perform a control operation of returning the lane (lane return control) on the driving lane such that the vehicle is returned to the centerline of the driving lane, when a specified cancelation condition is satisfied while the line access control is being performed. The control circuit 140 may move the vehicle in the lateral direction toward the centerline of the driving lane, when the cancelation condition is satisfied after the vehicle is moved in the lateral direction on the driving lane, while the line access control is being performed. The lane return control may be performed identically to the lane keeping control. When the lane return control is completed, the control circuit 140 may continuously perform the lane keeping control.

0051According to an exemplary form, the control circuit 140 may stop the lane return control, when the specified cancelation condition is canceled while the lane return control is being performed, and may perform the line access control, when the first input and the second input are received again. The cancelation condition may be canceled while the lane return control is being performed. While the cancelation condition is being canceled, the first input and the second input may be received again. In this case, the control circuit 140 may resume the line access control without completing the lane return control, that is, without moving the vehicle toward the centerline of the driving lane for the purpose of improving control efficiency.

0052According to the invention, the control circuit 140 is configured to perform a control operation of entering a lane (i.e., a lane entrance control) toward a target lane, when the line access control is completed within the second time duration. The control circuit 140 is configured to move the vehicle in the lateral direction toward the target lane such that the vehicle enters the target lane, when the vehicle sufficiently accesses the lane. The control circuit 140 may align the vehicle such that the lane keeping control is possible after the vehicle enters the target lane while the lane entrance control is being performed. The lane entrance control may be continuously performed until all wheels of the vehicle pass through the line.

0053According to another form, the control circuit 140 may output a warning through the output device 130 and may continuously perform the lane entrance control, when the specified cancelation condition is satisfied while the lane entrance control is being performed.

0054For example, the specified cancelation condition may be satisfied when a dangerous situation (e.g., the infringement of a safety distance) is sensed, when a system is shut down by a driver, when a system reaches a limit situation (e.g., the system fails to sense a line of a lane), when the hands-off of a driver is sensed, when a turn signal lamp is turned off by the driver, when the commencement of the changing of the lane is delayed (e.g., within 10 second after the first input is received)or when the lateral-movement is discontinuous. For another example, the cancelation condition may be satisfied only when a completion of the lane entrance control is impossible within a third time duration (e.g., 5 seconds). When it takes an excessive long time to perform the lane entrance control, the safety may be reduced. Accordingly, the above-described cancelation condition may be set. The control circuit 140 may calculate an expected time (remaining to lane change; RTLC) it takes to complete the lane entrance control. When the RTLC is greater than a remaining time that it takes to change the lane, the cancelation condition is determined as being satisfied. In this case, the RDLC may be DLT/V_y, LC. The RDLC, which represents a remaining distance to lane change, may refer to a distance between a line and a last tire of the vehicle passing through the line and, the V_y,LC may refer to an average lateral movement speed used when the lane is changed. The remaining time that it takes to change the lane may be obtained by subtracting time, which is elapsed from the infringement of the line, from the third time duration.

0055Since it may be more dangerous that the vehicle returns to a previous lane after the lane entrance control is commenced even if the cancelation condition is satisfied, the control circuit 140 may output a warning through the output device 130 and may continuously perform the lane entrance control. The control circuit 140 may output, for example, a visible warning, an auditory warning, and/or a tactile warning.

0056According to another form, the control circuit 140 may perform the lane keeping control on the target lane when the line access control is completed within the third time duration. The control circuit 140 may resume the lane keeping control and may move the vehicle to the centerline of the lane, when all the wheels of the vehicle enter the target lane. Accordingly, the changing of the lane may be completed.

0057<figref idref="f0002">FIG. 2</figref> is a block diagram illustrating components included in the vehicle, according to an exemplary form of the present invention.

0058Referring to <figref idref="f0002">FIG. 2</figref>, the vehicle may include a lane changing assist device 210, a vehicle external information sensor 220, a vehicle internal information sensor 230, a driver input device 240, an HMI 250, and a path following device 260.

0059The lane changing assist device 210 may be mounted in the vehicle. The lane changing assist device 210 may determine whether the lane change control is able to be performed, in response to the input of the driver, and may perform steering control and acceleration/deceleration control for the lane change control. The lane changing assist device 210 may include a lane change state determiner 211 and a target path generator 212. The lane change state determiner 211 may determine the state associated with changing of the lane by totally considering whether there is present the input of a driver and whether lane changing is possible. The target path generator 212 may generate a path appropriate to the driving of the vehicle, depending on the state associated with the changing of the lane.

0060The vehicle external information sensor 220 may include a sensor, such as a camera, a rader, or a LiDAR, to sense a line of a lane and an object, and may include a sensor, such as a navigation, to determine an attribute of a driving lane.

0061The vehicle internal information sensor 230 may detect the driving state of the vehicle and may include an acceleration sensor and a yaw rate sensor.

0062The driver input device 240 may include means for detecting the intentional action of the driver to a steering system such as a switch and a steering torque sensor.

0063The HMI 250 may display a screen such that a driver recognizes a lane state, which is changed, inside the vehicle.

0064The path following device 260 may perform a control operation to follow a target path through the control of an actuator such as a motor driven power steering system (MDPS) or an electronic stability control (ESC).

0065<figref idref="f0003">FIG. 3</figref> is a view illustrating the operation of an apparatus for controlling the drive of a vehicle, according to the present invention.

0066Referring to <figref idref="f0003">FIG. 3</figref>, a vehicle 310 may change a lane from a driving lane to a target lane. The vehicle 310 may flicker a turn signal lamp, when receiving the first input. The vehicle 310 performs lane keeping control for at least first time duration after the first input is received. The vehicle 310 commences the line access control after the lane keeping control is continuously performed for the first time duration, when the second input is received within the first time duration. The vehicle 310 may immediately commence the line access control when the second input is received after the first time duration.

0067The vehicle 310 may perform the line access control toward a line interposed between the driving lane and the target lane. The vehicle 310 may move in a lateral direction toward the line. The vehicle 310 may complete the line access control within the second time duration.

0068The vehicle 310 performs lane entrance control when the line access control is completed. The wheel of the vehicle 310 may pass through a line while the lane entrance control is being performed. The vehicle 310 may move in a lateral direction toward the target lane. The vehicle entrance control may be continuously performed from a time that the wheel of the vehicle 310 starts to pass through the line to a time that all wheels of the vehicle 310 pass through the line.

0069The vehicle 310 may perform the lane keeping control when the lane entrance control is completed. The vehicle 310 may move in a lateral direction toward the centerline of the target lane. When the vehicle 310 moves the centerline of the target lane, the vehicle 310 may turn off the turn signal lamp.

0070<figref idref="f0004">FIG. 4</figref> is a view illustrating an exemplary operation of a vehicle drive control apparatus of a vehicle, according to another form of the present invention.

0071Referring to <figref idref="f0004">FIG. 4</figref>, a vehicle 410 may change a lane from a driving lane toward a target lane. The vehicle 410 may flicker a turn signal lamp, when receiving the first input. The vehicle 410 may commence line access control when the second input is received.

0072The vehicle 410 may perform the line access control toward a line interposed between the driving lane and the target lane. The vehicle 410 may move in a lateral direction toward the line. The specified cancelation condition may be satisfied while the line access control is being performed.

0073When the cancelation condition is satisfied, since the vehicle 410 may be too dangerous to change the lane, the vehicle 410 may stop changing the lane and may perform lane return control. The vehicle 410 may stop changing the lane, may turn off the turn signal lamp, and may move in the lateral direction toward the centerline of the driving lane. The lane return control may be performed in the same manner as the manner of the lane keeping control.

0074When the lane return control is completed, the vehicle 410 may continuously perform the lane keeping control at the centerline of the driving lane.

0075<figref idref="f0005">FIG. 5</figref> is a view illustrating an exemplary operation of a vehicle drive controlling apparatus, according to an exemplary form of the present invention.

0076Referring to <figref idref="f0005">FIG. 5</figref>, a vehicle 510 may change a lane from a driving lane to a target lane. The vehicle 510 may flicker a turn signal lamp, when receiving the first input. The vehicle 510 may commence the line access control when the second input is received.

0077The vehicle 510 may perform the line access control toward a line interposed between the driving lane and the target lane. The vehicle 510 may move in a lateral direction toward the line. The specified cancelation condition may be satisfied while the line access control is being performed.

0078When the cancelation condition is satisfied, since the vehicle 510 is too dangerous to change the lane, the vehicle 510 may stop changing the lane and may perform lane return control. The vehicle 510 may stop changing the lane, may turn off the turn signal lamp, and may move in the lateral direction toward the centerline of the driving lane. The lane return control may be performed in the same manner as the manner of the lane keeping control.

0079The vehicle 510 may perform the line access control again, when the cancelation condition is canceled during the lane return control and the first input and the second input are received again. The vehicle 510 may flicker the turn signal lamp without completing the lane return control and may resume the line access control, for the control efficiency.

0080The vehicle 510 may perform the lane entrance control when the line access control is completed.

0081<figref idref="f0006">FIG. 6</figref> is a flowchart illustrating a method for controlling the drive of a vehicle, according to another exemplary form of the present invention.

0082Hereinafter, it is assumed that a vehicle including the vehicle drive controlling apparatus 100 of <figref idref="f0001">FIG. 1</figref> performs the process of <figref idref="f0006">FIG. 6</figref>. In addition, in the following description made with reference to <figref idref="f0006">FIG. 6</figref>, the operation described as being performed by the vehicle may be understood as being controlled by the control circuit 140 of the vehicle drive controlling apparatus 100.

0083Referring to <figref idref="f0006">FIG. 6</figref>, in operation 610, the vehicle may receive a first input for changing a lane. The vehicle may continuously perform lane keeping control until the first input is received. When the first input is received, the vehicle performs the lane keeping control on the driving lane of the vehicle for the first time duration, in operation 620. In operation 630, the vehicle may receive a second input for changing the lane after the first input is received. The vehicle may continuously perform lane keeping control when the second input is not received.

0084When the second input is received, the vehicle performs a line access control such that the vehicle moves toward a line positioned in a direction of a target lane after the first time duration, in operation 640. In operation 650, the vehicle determines whether the line access control is completed within the second time duration. When the line access control is not completed within the second time duration, the vehicle may cancel changing of the lane and may perform the lane keeping control on the driving lane. When the line access control is completed within the second time duration, the vehicle performs the lane entrance control toward the target lane, in operation 660. In operation 670, the vehicle may determine whether the line entrance control is completed within the third time duration. When the lane entrance control is not completed within the third time duration, the vehicle may perform the lane entrance control together with the warning, in operation 670. When the lane entrance control is completed within the third time duration, the vehicle may perform the lane keeping control inside the target lane, in operation 690.

0085<figref idref="f0007">FIG. 7</figref> is a flowchart illustrating a method for controlling the drive of a vehicle, according to another form of the present invention.

0086Hereinafter, it is assumed that a vehicle including the vehicle drive controlling apparatus 100 of <figref idref="f0001">FIG. 1</figref> performs the process of <figref idref="f0007">FIG. 7</figref>. In addition, in the following description made with reference to <figref idref="f0007">FIG. 7</figref>, the operation described as being performed by the vehicle may be understood as being controlled by the control circuit 140 of the vehicle drive controlling apparatus 100.

0087Referring to <figref idref="f0007">FIG. 7</figref>, in operation 705, the vehicle may perform lane keeping control. In operation 710, the vehicle may determine whether a first input of a driver is received. The vehicle may continuously perform the lane keeping control until the first input is received. When the first input is received, the vehicle may perform lane keeping control, in operation 715. While the lane keeping control is being performed in operation 715, the vehicle may determine whether the cancelation condition is satisfied in operation 720. When the cancelation condition is satisfied, the vehicle may cancel changing of the lane and may continuously perform the lane keeping control in operation 705. When the cancelation condition is not satisfied, the vehicle may continuously perform the lane keeping control in operation 715.

0088While the lane keeping control is performed in operation 715, the vehicle may determine whether the second input of the driver is received in operation 725. When the second input is not received, the vehicle may continuously perform the lane keeping control in operation 715. When the second input is received, the vehicle may perform the line access control, in operation 730. While the line access control is being performed, the vehicle may determine whether the cancelation condition is satisfied in operation 735. When the cancelation condition is satisfied, the vehicle may cancel changing of the lane and may perform lane return control in operation 740. When the cancelation condition is not satisfied, the vehicle may continuously perform the line access control.

0089While the lane return control is being performed, the vehicle may determine whether the lane return is completed in operation 745. When the lane return is completed, the vehicle may perform the lane keeping control in operation 705. While the lane return control is being performed, the vehicle may determine whether the cancelation condition is canceled in operation 750. When the cancelation condition is canceled and when the first input of the driver is received, the vehicle may perform the lane keeping control in operation 715.

0090While the line access control is being performed, the vehicle may determine whether the line access is completed in operation 755. When the line access is completed, the vehicle may perform lane entrance control in operation 760. While the lane entrance control is being performed, the vehicle may determine whether the cancelation condition is satisfied in operation 765. When the cancelation condition is satisfied, the vehicle may maintain the lane entrance control and may output a warning in operation 770. When the cancelation condition is not satisfied, the vehicle may continuously perform the line access control.

0091While the lane entrance control is being performed, the vehicle may determine whether the lane entrance is completed in operation 775. Similarly, while the lane entrance control and the warning output are performed, the vehicle may determine whether the lane entrance is completed in operation 780. When the lane entrance is completed, the vehicle may perform the lane keeping control in operation 705.

0092<figref idref="f0008">FIG. 8</figref> illustrates a computing system, according to another form of the present invention.

0093Referring to <figref idref="f0008">FIG. 8</figref>, a method according to an exemplary form of the present invention may be implemented through a computing system. A computing system 1000 may include at least one processor 1100, a memory 1300, a user interface input device 1400, a user interface output device 1500, a storage 1600, and a network interface 1700, which are connected with each other via a bus 1200.

0094The processor 1100 may be a central processing unit (CPU) or a semiconductor device for processing instructions stored in the memory 1300 and/or the storage 1600. Each of the memory 1300 and the storage 1600 may include various types of volatile or non-volatile storage media. For example, the memory 1300 may include a read only memory (ROM) and a random access memory (RAM).

0095Thus, the operations of the methods or algorithms described in connection with the forms disclosed in the specification may be directly implemented with a hardware module, a software module, or combinations thereof, executed by the processor 1100. The software module may reside on a storage medium (e.g., the memory 1300 and/or the storage 1600) such as a RAM, a flash memory, a ROM, an erasable and programmable ROM (EPROM), an electrically EPROM (EEPROM), a register, a hard disc, a removable disc, or a compact disc-ROM (CD-ROM). An exemplary storage medium may be coupled to the processor 1100. The processor 1100 may read out information from the storage medium and may write information in the storage medium. Alternatively, the storage medium may be integrated with the processor 1100. The integrated processor and storage medium may reside in an application specific integrated circuit (ASIC) . The ASIC may reside in a user terminal. Alternatively, the integrated processor and storage medium may reside as a separate component of the user terminal.

0096As described above, according to an exemplary form of the present invention, the vehicle drive controlling apparatus may provide a strategy of changing the lane based on a specified limited time, thereby improving the safety of the driver. In addition, the control strategy is varied depending on the cancelation condition being satisfied, thereby providing safety while improving the control efficiency.

0097Besides, various effects may be directly or indirectly produced through the present invention.

0098While the present invention has been described with reference to exemplary forms, it will be apparent to those skilled in the art that various changes and modifications may be made according to the appended claims.