Display system, saddle-type vehicle, speedometer, mobile terminal and program

Abstract

A display system, a saddle-type vehicle, a speedometer, a portable terminal, and a program are provided that can improve the comfort of a user's meter viewing and further reduce the burden. [Solution] A display system 10 includes a display unit 16 that displays the speed V of a vehicle 1, and a processing unit 17 that sets the display update cycle T of the display unit 16 in accordance with the speed V. The processing unit 17 changes the display update cycle T to an increasing trend when the speed V is equal to or greater than a high side speed threshold VH when the vehicle 1 is accelerating, and changes the display update cycle T to a decreasing trend when the speed V is equal to or less than a low side speed threshold VL when the vehicle 1 is decelerating. The processing unit 17 changes the periodic change width to a decreasing trend when the vehicle 1 is accelerating, and changes the periodic change width to an increasing trend when the vehicle 1 is decelerating.

Description

[Technical Field]

[0001] The present invention relates to a display system, a saddle-ride type vehicle, a speedometer, a mobile terminal, and a program. [Background technology]

[0002] Conventionally, for example, a meter device that updates a display in accordance with the speed of a moving object is known (see, for example, Patent Document 1). This meter device updates the display with high responsiveness when the speed of the moving object is slow, and updates the display with low responsiveness when the speed of the moving object is fast. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-14647 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional meter device, the correspondence between speed and display responsiveness is set to be the same when the vehicle is accelerating and when it is decelerating, so there is room for improvement in terms of the fine changes in responsiveness when the vehicle is traveling at a speed close to the threshold at which responsiveness is changed.

[0005] An object of the present invention is to provide a display system, a saddle-type vehicle, a speedometer, a mobile terminal, and a program that can further improve the comfort of meter viewing by a user and further reduce the burden. [Means for solving the problem]

[0006] In order to solve the above problems and achieve the above object, the present invention employs the following aspects. A display system (10, 30) according to one aspect of the present invention comprises a display unit (16, 22) that displays the speed of a moving body (1), and a control unit (17, 24) that sets the display update period of the display unit in accordance with the speed, and the control unit changes the display update period when the speed is equal to or greater than a first speed threshold when the moving body is accelerating, and changes the display update period when the speed is equal to or less than a second speed threshold different from the first speed threshold when the moving body is decelerating.

[0007] In the display system described above, the control unit may set the first speed threshold relatively larger than the second speed threshold, and change the display update period from the first period to the second period when the speed is equal to or greater than the first speed threshold, and change the display update period from the second period to the first period when the speed is equal to or less than the second speed threshold.

[0008] In the display system described above, the control unit may change the display update period so that the periodic change width tends to decrease when the moving body accelerates, and may change the display update period so that the periodic change width tends to increase when the moving body decelerates.

[0009] A saddle-type vehicle (1) according to one embodiment of the present invention includes a display system (10) described in any one of the above and a detection unit (12) that detects a state quantity related to the speed, and the control unit acquires the speed based on a detection signal output from the detection unit.

[0010] A speedometer according to one aspect of the present invention includes any one of the display systems (10) described above, and the display system is mounted on the moving body.

[0011] A mobile terminal according to one aspect of the present invention includes any one of the display systems (20) described above and a communication unit (23) that communicates with the mobile object.

[0012] A program according to one aspect of the present invention is a program executed by a computer that controls a display unit (16, 22) that displays the speed of a moving object (1), the program including: The control device executes the steps of: setting the display update period of the display unit according to the speed; changing the display update period when the speed is equal to or greater than a first speed threshold when the moving body is accelerating; and changing the display update period when the speed is equal to or less than a second speed threshold different from the first speed threshold when the moving body is decelerating. [Effects of the Invention]

[0013] As described above, by setting a first speed threshold during acceleration and a second speed threshold during deceleration in order to change the display update period according to the speed of the moving object, the period during which the display update period remains unchanged can be substantially extended compared to when only a single speed threshold is set, for example. This prevents the display update period from being frequently changed according to the speed, thereby further improving the user's comfort in viewing the meter and further reducing the burden on the user.

[0014] In the above case, by setting the first speed threshold relatively larger than the second speed threshold, the period during which the display update cycle is maintained at the first cycle or the second cycle can be substantially extended, and the display update cycle can be prevented from being frequently changed depending on the speed.

[0015] In the above case, by changing the periodic change width to a decreasing trend during acceleration and to an increasing trend during deceleration, the user's comfort in viewing the meter can be further improved and the burden can be further reduced in accordance with changes in speed.

[0016] The above-described saddle-ride type vehicle or speedometer can substantially extend the period during which the display update cycle is maintained unchanged, thereby suppressing the discomfort and visual burden felt by the user from visual information. For example, the convenience and comfort of the speed display can be improved without relying on an appropriate device carried by the user.

[0017] According to the above-described mobile terminal, the period during which the display update cycle is maintained unchanged can be substantially extended, thereby suppressing the discomfort and visual burden felt by the user from visual information. For example, compared to when various processes are performed by appropriate devices mounted on the mobile device, the need to increase the processing power of the device mounted on the mobile device can be suppressed. For example, the versatility and comfort of the speed display can be improved without relying on appropriate devices mounted on the mobile device. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a configuration diagram of a display system mounted on a vehicle according to an embodiment of the present invention. [Figure 2] 5A and 5B are graphs showing examples of the correspondence relationship between the speed and the display update period when the vehicle is accelerating and decelerating in the display system according to the embodiment of the present invention. [Figure 3] FIG. 4 is a graph showing an example of the correspondence relationship between the vehicle speed and the display update period in the display system according to the embodiment of the present invention. [Figure 4] 4 is a flowchart showing the operation of the display system according to the embodiment of the present invention. [Figure 5] FIG. 10 is a configuration diagram of a display system according to a modified example of the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, a display system according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a configuration diagram of a display system 10 mounted on a vehicle 1 according to an embodiment. 1, a display system 10 according to the embodiment is mounted on a vehicle 1. The vehicle 1 is a saddle-ride type vehicle, for example, a motorcycle. The vehicle 1 includes, for example, front wheels FW as steering wheels, rear wheels RW as drive wheels, and a body frame 2. The front wheel FW is supported by a pair of left and right front forks 3 and is steered by a bar handle 4. The pair of front forks 3 and the bar handle 4 are supported by a head pipe (not shown) of the body frame 2 so as to be steerable. The rear wheel RW is connected to a power unit (not shown) that transmits power, and is supported by a swing arm 5. For example, the swing arm 5 is supported by the body frame 2 via a link (not shown) and a cushion (not shown) by a so-called link-type suspension. The vehicle 1 includes, for example, a front cowl 7 at the front of the body cover 6 and a windscreen 8 provided at the upper center of the front cowl 7.

[0020] The display system 10 mounted on the vehicle 1 includes, for example, an operation unit 11, a rotation sensor 12, an accelerator position sensor 13, a front brake sensor 14, a rear brake sensor 15, a display unit 16, and a processing unit 17. For example, the operation unit 11, the display unit 16, and the processing unit 17 constitute a display unit 10a. The display unit 10a constitutes, for example, at least a part of a speedometer or the like. The display unit 10a is disposed, for example, in front of the handlebars 4, and is covered from the front and above by the front cowl 7 and the windscreen 8. Note that the operation unit 11 of the display unit 10a may be disposed in a location different from the display unit 16, for example, on the handlebars 4.

[0021] The operation unit 11 includes, for example, an input device that is a user interface. The input device is, for example, a button or a touch panel that accepts input operations by the operator's fingers. The operation unit 11 outputs an operation signal in response to the input operation by the operator. The rotation sensor 12 is, for example, a wheel speed sensor provided on the steered wheels (front wheels FW) or a rotation speed sensor provided on the power unit, and detects a state quantity related to the speed V of the vehicle 1 and outputs a detection signal of the state quantity related to the speed V.

[0022] The accelerator position sensor 13 is, for example, a magnetic sensor using a contactless Hall element. The accelerator position sensor 13 detects accelerator operation, such as the accelerator position that changes in response to the operation of a throttle grip (not shown) by the driver of the vehicle 1, and outputs a detection signal of the accelerator operation. Each of the front brake sensor 14 and the rear brake sensor 15 is, for example, a hydraulic pressure sensor or a stroke sensor. The front brake sensor 14 detects a braking operation, such as an operation of a brake lever (not shown) by the driver of the vehicle 1 or hydraulic pressure resulting from the operation of the brake lever, and outputs a detection signal for the braking operation. The rear brake sensor 15 detects a braking operation, such as an operation of a brake pedal (not shown) by the driver of the vehicle 1 or hydraulic pressure resulting from the operation of the brake pedal, and outputs a detection signal for the braking operation.

[0023] The display unit 16 is, for example, a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display. The processing unit 17 is a software function unit that functions when a predetermined program is executed by a processor such as a CPU (Central Processing Unit). The software function unit is an ECU (Electronic Control Unit) that includes a processor such as a CPU, a ROM (Read Only Memory) that stores programs, a RAM (Random Access Memory) that temporarily stores data, and electronic circuits such as a timer. At least a part of the processing unit 17 may be an integrated circuit such as an LSI (Large Scale Integration).

[0024] The processing unit 17 controls the operation of the display unit 16 based on, for example, operation signals and detection signals output from the operation unit 11 and the sensors 12, 13, 14, and 15. The processing unit 17 acquires the speed V of the vehicle 1 based on the detection signal output from the rotation sensor 12. When displaying the speed V of the vehicle 1 on the display unit 16, the processing unit 17 updates the display on the display unit 16 at a display update period T corresponding to the speed V. For example, the processing unit 17 stores in advance information on a predetermined correspondence relationship between a speed threshold having so-called hysteresis and the display update period T, and sets the display update period T according to the result of a magnitude comparison between the speed threshold and the speed V.

[0025] Fig. 2 is a graph showing an example of the correspondence relationship between the speed V of the vehicle 1 and the display update period T when the vehicle 1 is accelerating and decelerating in the display system 10 according to the embodiment of the present invention. Fig. 3 is a graph showing an example of the correspondence relationship between the speed V of the vehicle 1 and the display update period T in the display system 10 according to the embodiment. 2 and 3, the speed thresholds for determining whether or not to change the display update cycle T are a relatively small low-side speed threshold VL and a relatively large high-side speed threshold VH. When the vehicle 1 is accelerating, if the speed V is equal to or greater than the high-side speed threshold VH, the processing unit 17 changes the display update cycle T to an increasing tendency, and when the vehicle 1 is decelerating, if the speed V is equal to or less than the low-side speed threshold VL, the processing unit 17 changes the display update cycle T to a decreasing tendency.

[0026] For example, the processing unit 17 selects one of the sequentially increasing initial display update period T0, first display update period T1, second display update period T2, third display update period T3, and fourth display update period T4 according to the speed V. For example, as shown in FIGS. 2 and 3 and Table 1 below, in the initial state where the speed V is zero (zero kph), the first speed threshold VT1 for changing the display update period T between the first display update period T1 and the second display update period T2 is set to a first high side speed threshold VH1 (VT1 = VH1) that is greater than zero. The second speed threshold VT2 for changing the display update period T between the second display update period T2 and the third display update period T3 is set to a second high side speed threshold VH2 (VT2 = VH2) that is greater than the first high side speed threshold VH1. The third speed threshold VT3 for changing the display update period T between the third display update period T3 and the fourth display update period T4 is set to a third high side speed threshold VH3 (VT3=VH3) that is greater than the second high side speed threshold VH2.

[0027] [Table 1]

[0028] When the speed V is less than the first high-side speed threshold VH1 which is zero or greater and greater than zero during acceleration of the vehicle 1, the processing unit 17 sets the display update period T to the first display update period T1. When the speed V becomes equal to or greater than the first high-side speed threshold VH1 due to the acceleration of the vehicle 1, the processing unit 17 changes the display update period T from the first display update period T1 to the second display update period T2, and thereafter regards the first speed threshold VT1 = the first low-side speed threshold VL1 (<VH1). When the speed V becomes equal to or greater than the second high-side speed threshold VH2 which is greater than the first high-side speed threshold VH1 due to the acceleration of the vehicle 1, the processing unit 17 changes the display update period T from the second display update period T2 to the third display update period T3, and thereafter regards the second speed threshold VT2 = the second low-side speed threshold VL2 (<VH2). When the speed V becomes equal to or greater than the third high-side speed threshold VH3 which is greater than the second high-side speed threshold VH2 due to the acceleration of the vehicle 1, the processing unit 17 changes the display update period T from the third display update period T3 to the fourth display update period T4, and thereafter regards the third speed threshold VT3 = the third low-side speed threshold VL3 (<VH3).

[0029] On the other hand, when the speed V is greater than the third low-side speed threshold VL3 which is less than the third high-side speed threshold VH3 during deceleration of the vehicle 1, the processing unit 17 sets the display update period T to the fourth display update period T4. When the speed V becomes equal to or less than the third low-side speed threshold VL3 due to the deceleration of the vehicle 1, the processing unit 17 changes the display update period T from the fourth display update period T4 to the third display update period T3, and thereafter regards the third speed threshold VT3 = the third high-side speed threshold VH3. When the speed V becomes equal to or less than the second low-side speed threshold VL2 due to the deceleration of the vehicle 1, the processing unit 17 changes the display update period T from the third display update period T3 to the second display update period T2, and thereafter regards the second speed threshold VT2 = the second high-side speed threshold VH2. When the speed V becomes equal to or less than the first low-side speed threshold VL1 due to the deceleration of the vehicle 1, the processing unit 17 changes the display update period T from the second display update period T2 to the first display update period T1, and thereafter regards the first speed threshold VT1 = the first high-side speed threshold VH1.

[0030] For example, the period change width between the initial display update period T0 and the first display update period T1 (first period change width ΔT1=T1-T0) is relatively larger than the period change width between the first display update period T1 and the second display update period T2 (second period change width ΔT2=T2-T1). The second period change width ΔT2 is relatively larger than the period change width between the second display update period T2 and the third display update period T3 (third period change width ΔT3=T3-T2). The third period change width ΔT3 is relatively larger than the period change width between the third display update period T3 and the fourth display update period T4 (fourth period change width ΔT4=T4-T3). When the vehicle 1 accelerates, the processing unit 17 changes the display update period T so that the period change width tends to decrease, and when the vehicle 1 decelerates, the processing unit 17 changes the display update period T so that the period change width tends to increase.

[0031] 4 is a flowchart showing the operation of the display system 10 according to the embodiment of the present invention. For example, the processing unit 17 repeatedly executes the series of processes shown in FIG. As shown in FIG. 4, first, in step S01, the processing unit 17 acquires the display update cycle T that is set at this time point. Next, in step S02, the processing unit 17 acquires the high-side speed threshold VH and the low-side speed threshold VL associated with the display update cycle T. Next, in step S03 , the processing unit 17 acquires the speed V of the vehicle 1 based on the detection signal output from the rotation sensor 12 .

[0032] Next, in step S04, the processing unit 17 determines whether or not the speed V is equal to or greater than the high speed threshold VH. If the result of this determination is "YES", the processing unit 17 advances the process to step S05. On the other hand, if the result of this determination is "NO", the processing unit 17 advances the process to step S06. Then, in step S05, the processing unit 17 increases the display update cycle T. Then, the processing unit 17 advances the process to step S08. In step S06, the processing unit 17 determines whether the speed V is equal to or less than the low speed threshold VL. If the result of this determination is "YES", the processing unit 17 advances the process to step S07. On the other hand, if the result of this determination is "NO", the processing unit 17 advances the process to the end. Then, in step S07, the processing unit 17 decreases the display update cycle T. Then, the processing unit 17 advances the process to step S08. Next, in step S08, the processing unit 17 updates the high-side speed threshold VH and the low-side speed threshold VL in accordance with the changed display update cycle T. Then, the processing unit 17 advances the processing to END.

[0033] As described above, the display system 10 of the embodiment sets a high-side speed threshold VH during acceleration and a low-side speed threshold VL during deceleration in order to change the display update cycle T in accordance with the speed V of the vehicle 1. By setting a speed threshold having so-called hysteresis, the processing unit 17 can substantially extend the period during which the display update cycle T is maintained unchanged, compared to, for example, when only a single speed threshold is set. This prevents the display update cycle T from being frequently changed in accordance with the speed V, thereby further improving the user's comfort in viewing the meter and further reducing the burden.

[0034] The processing unit 17 changes the periodic change width to a decreasing trend during acceleration and to an increasing trend during deceleration, thereby further improving the comfort of the user's meter viewing and further reducing the burden in accordance with changes in speed V.

[0035] According to the vehicle 1 or the display unit 10a of the embodiment, the period during which the display update cycle T is maintained unchanged can be substantially extended, and the discomfort felt by the user from visual information and the increase in the visual burden can be suppressed. For example, the convenience and comfort of speed display can be improved without depending on an appropriate device carried by the user.

[0036] (Variation) Modifications of the embodiment will be described below. Note that the same parts as those in the above-described embodiment will be denoted by the same reference numerals, and descriptions thereof will be omitted or simplified.

[0037] In the above-described embodiment, the display system 10 is mounted on the vehicle 1, but this is not limiting. For example, at least a part of the display system 10 may not be mounted on the vehicle 1, or the vehicle 1 may be provided with external devices that are not mounted on the vehicle 1 in addition to the display system 10. FIG. 5 is a configuration diagram of a display system 30 according to a modified example of the embodiment. As shown in FIG. 5, the display system 30 of the modified example includes a vehicle-side system 10A that includes a display unit 10b of the modified example instead of the display unit 10a of the above-described embodiment, and an information terminal 20 external to the vehicle 1. The display unit 10b of the modified example includes, for example, the display unit 10a of the above-described embodiment, and further includes a communication unit 18. The communication unit 18 communicates with the information terminal 20, for example, directly or via a network NW.

[0038] The information terminal 20 is, for example, a mobile information terminal such as a smartphone, a tablet terminal, or a personal computer, or a mobile display terminal, etc. The information terminal 20 includes, for example, an operation unit 21, a display unit 22, a communication unit 23, and a processing unit 24. The operation unit 21 includes, for example, an input device that is a user interface. The input device is, for example, a button or a touch panel that accepts input operations performed by the operator's fingers. The operation unit 21 outputs an operation signal in response to the input operation performed by the operator. The display unit 22 is, for example, a display device such as a liquid crystal display or an organic EL (Electro Luminescence) display. The communication unit 23 communicates with the vehicle-side system 10A, for example, directly or via the network NW.

[0039] The processing unit 24 is a software function unit that functions when a predetermined program is executed by a processor such as a CPU (Central Processing Unit). The software function unit is an ECU (Electronic Control Unit) that includes a processor such as a CPU, a ROM (Read Only Memory) that stores programs, a RAM (Random Access Memory) that temporarily stores data, and electronic circuits such as a timer. At least a part of the processing unit 24 may be an integrated circuit such as an LSI (Large Scale Integration). The processing unit 24 performs, for example, the same operations as the processing unit 17 of the above-described embodiment.

[0040] According to the information terminal 20 of the modified example, the period during which the display update cycle T is maintained unchanged can be substantially extended, and the discomfort felt by the user from visual information and the visual burden can be prevented from increasing. For example, compared to when various processes are performed by appropriate devices mounted on the vehicle 1, the need to increase the processing capacity of the devices mounted on the vehicle 1 can be prevented. For example, the versatility and comfort of the speed display can be improved without relying on appropriate devices mounted on the vehicle 1.

[0041] In the above-described embodiment, as shown in Fig. 4, the display update period T is changed in accordance with changes in the speed V acquired through a series of processes that are repeatedly executed at appropriate timing, but this is not limiting. For example, the processing unit 17 may detect acceleration and deceleration of the vehicle 1 based on changes in the speed V or detection signals output from each of the accelerator position sensor 13, the front brake sensor 14, and the rear brake sensor 15. The processing unit 17 may separately execute different processes when the vehicle 1 is accelerating and when it is decelerating, that is, a process of changing the display update period T to an increasing trend in accordance with the high-side speed threshold VH and a process of changing the display update period T to a decreasing trend in accordance with the low-side speed threshold VL.

[0042] In the above-described embodiment, the speed threshold value for determining whether or not the display update cycle T needs to be changed may be one or more. For example, when multiple different speed thresholds are set, the amount of change in the speed thresholds may be constant or may vary. The hysteresis width between the high-side speed threshold VH and the low-side speed threshold VL may be constant or may vary.

[0043] In the above-described embodiment, the vehicle 1 is a saddle-ride type vehicle in which the driver straddles the body or sits on the seat, such as a motorcycle, but is not limited to this and may be a moving body such as a vehicle with a riding position other than a saddle-ride type.

[0044] A program for implementing all or part of the functions of the display systems 10 and 30 of the present invention may be recorded on a computer-readable recording medium, and the program may be loaded into a computer system and executed to perform all or part of the processing performed by the display systems 10 and 30. The term "computer system" as used herein includes hardware such as an operating system and peripheral devices. The term "computer system" also includes a WWW system equipped with a website provision environment (or display environment). The term "computer-readable recording medium" refers to portable media such as flexible disks, optical magnetic disks, ROMs, and CD-ROMs, as well as storage devices such as hard disks built into computer systems. The term "computer-readable recording medium" also includes devices that retain a program for a certain period of time, such as volatile memory (RAM) within a computer system that acts as a server or client when the program is transmitted via a network such as the Internet or a communication line such as a telephone line.

[0045] The program may also be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by transmission waves in the transmission medium. Here, the "transmission medium" that transmits the program refers to a medium that has the function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. The program may also be a program that realizes part of the above-mentioned functions. Furthermore, the program may be a so-called differential file (differential program) that can realize the above-mentioned functions in combination with a program already recorded in the computer system.

[0046] The embodiments of the present invention are presented as examples and are not intended to limit the scope of the invention. These embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are intended to be included within the scope and spirit of the invention, as well as within the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0047] 1...vehicle, 10, 30...display system, 11...operation unit, 12...rotation sensor, 13...accelerator position sensor, 14...front brake sensor, 15...rear brake sensor, 16...display unit, 17...processing unit, 18...communication unit, 20...information terminal, 21...operation unit, 22...display unit, 23...communication unit, 24...processing unit

Claims

1. A display unit (16, 22) for displaying the speed of the moving object (1); a control unit (17, 24) that sets a display update cycle of the display unit in accordance with the speed, The control unit is changing the display update period when the speed of the moving object is equal to or greater than a first speed threshold when the moving object is accelerating; changing the display update period when the speed of the moving object is equal to or less than a second speed threshold different from the first speed threshold during deceleration of the moving object; The control unit is The first speed threshold is set relatively larger than the second speed threshold, changing the display update period from a first period to a second period when the speed is equal to or greater than the first speed threshold; When the speed is equal to or less than the second speed threshold, the display update cycle is changed from the second cycle to the first cycle. Display system.

2. The control unit is changing the display update period so that a period change width tends to decrease when the moving body accelerates; When the moving body is decelerating, the display update period is changed so that the period change width tends to increase. The display system of claim 1 .

3. A display system (10) according to claim 1, A detection unit (12) for detecting a state quantity related to the speed; Equipped with The control unit acquires the speed based on a detection signal output from the detection unit.

4. A display system (10) according to claim 1, The display system is mounted on the moving object. speedometer.

5. A display system (20) according to claim 1; A communication unit (23) for communicating with the mobile body; Equipped Mobile device.

6. A display unit (16, 22) for displaying the speed of a moving object (1); a control unit (17, 24) that sets a display update cycle of the display unit in accordance with the speed, The control unit is changing the display update period when the velocity of the moving object is equal to or greater than a first velocity threshold during acceleration of the moving object; changing the display update period when the speed of the moving object is equal to or less than a second speed threshold different from the first speed threshold during deceleration of the moving object; The control unit is changing the display update period so that a period change width tends to decrease when the moving body accelerates; When the moving body is decelerating, the display update period is changed so that the period change width tends to increase. Display system.

7. A program executed by a computer that controls a display unit (16, 22) that displays the speed of a moving object (1), The computer includes: setting a display update cycle of the display unit in accordance with the speed; changing the display update period when the velocity of the moving object is equal to or greater than a first velocity threshold during acceleration of the moving object; changing the display update period when the speed of the moving object is equal to or less than a second speed threshold different from the first speed threshold when the moving object is decelerating; Run the command, The computer includes: The first speed threshold is set relatively larger than the second speed threshold, changing the display update period from a first period to a second period when the speed is equal to or greater than the first speed threshold; When the speed is equal to or less than the second speed threshold, the display update period is changed from the second period to the first period. program.

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