JP2007153116A - Vehicle instrument indication device and vehicle instrument display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle instrument indication device and a vehicle instrument display method which enable indication contents both before and after change to be easily recognized at the time of change of a display form of images of a rotary-type analog meter such as a display size or a display position. <P>SOLUTION: When the images of a speedometer or a tachometer as a rotary-type analog meter are displayed by an indication device 10 having a dot-matrix type display screen, and the display-size changing processing, which changes the display size of the speedometer or the tachometer, is performed by a display-control device 20, display control is performed so that the speedometer or the tachometer is enlarged or downsized about the coordinates where the needle tip of the needle of the speedometer or the tachometer is positioned. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicular instrument display device and a vehicular instrument display method for displaying, as an image, a rotary analog meter as an instrument indicating the state of each part of the vehicle.

  2. Description of the Related Art Conventionally, a rotary analog meter has been adopted as a measuring instrument indicating the state of each part of a vehicle such as an automobile. Such a rotary analog meter is arranged at a position visible from the driver's seat in the passenger compartment, and includes a tachometer that indicates the engine speed, a speed meter that indicates the speed of the vehicle, a fuel meter that indicates the remaining amount of fuel, and the like. Prepare.

  In recent years, an instrument display device that displays a rotary analog meter as an image using a display device having a dot matrix type display screen such as a liquid crystal display panel or an organic EL panel has been mounted on a vehicle. Has been proposed. Since the importance of the information that the driver currently needs changes depending on the driving situation and driving mode, the current driving situation or the current driving situation can be displayed by displaying the instruments with a display device having a dot matrix type display screen. It is expected that various instruments can be variably displayed in a display form suitable for the driving form, and the driver can be effectively supported.

As an example of an instrument display device having the above-described dot matrix type display screen, for example, in Patent Document 1, when displaying a tachometer and a speedometer at the same time, the display size and display position of each meter are set according to the operation mode. A switchable instrument display device is disclosed.
JP 2001-58522 A

  By the way, if the display form of various meters displayed by the instrument display device, that is, the display size or the display position is changed, the display position of the meter pointer is moved before and after the change of the display form. For this reason, if the process of changing the display mode of the meter is performed while the driver is not gazing at the meter, the driver loses sight of the needle tip of each meter pointer after the change, or the driver Even if the display mode change process is performed while gazing, the driver cannot follow the change in the display mode of the meter and takes time to correctly recognize the changed display content. There was a problem such as.

  The present invention was devised in view of the conventional situation as described above, and when changing the display form of the image of the rotary analog meter, by performing processing focusing on the display position of the meter pointer, It is an object to provide a vehicle instrument display device and a vehicle instrument display method capable of easily recognizing display contents before and after the change.

  The present invention provides a vehicle instrument display device that displays a rotary analog meter as an image indicating the state of each part of the vehicle as an image. When changing the display size of the rotary analog meter, The problem described above is solved by enlarging or reducing the rotary analog meter around the coordinates where the needle tip is located.

  According to the present invention, when the display size of the rotary analog meter is enlarged or reduced, there is no change in the display position of the needle point portion of the pointer that is the driver's gazing point. Even if the display size is changed while keeping an eye on the eye, the gaze point is not lost. In addition, even if the display size change processing is performed while the driver is gazing at the rotary analog meter, the needle point of the pointer that is the driver's point of interest does not move, so the driver must move the point of view. There is no. For this reason, the driver can easily recognize the display contents before and after the display size changing process, and the visibility of the rotary analog meter is improved.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The vehicle instrument display device according to the present embodiment displays a tachometer indicating the number of revolutions of an engine mounted on the vehicle and a speedometer indicating the speed of the vehicle as images of a rotary analog meter. However, the present invention can be effectively applied to a display that displays instruments other than these tachometers and speedometers.

  The configuration of the vehicle instrument display device of this embodiment is shown in FIG. The vehicle instrument display device includes a display device 10 having a dot matrix type display screen for displaying a tachometer and a speedometer as a rotary analog meter as images, and outputs a control signal to the display device 10. And a display control device 20 that controls the display operation of the display device 10 as main components.

  The display device 10 includes, for example, a display device such as a liquid crystal display panel or an organic EL panel, and an arbitrary image is displayed on a dot matrix type display screen according to a signal input from the display control device 20. It can be displayed.

  The display control device 20 is configured by combining various electronic / electric devices such as a semiconductor integrated circuit, an analog / digital converter, and an image processing circuit, and outputs a video signal and a control signal to the display device 10. To control the display content displayed on the display screen of the display device 10.

  In the vehicle instrument display device of this embodiment, the display control device 20 includes a speedometer drawing circuit 21, a tachometer drawing circuit 22, a speedometer pointer position detection circuit 23, and a tachometer, as shown in FIG. A pointer position detection circuit 24, a size change processing circuit 25, a display position movement circuit 26, and a drawing processing circuit 27 are provided. Each function in the display control device 20 can be configured as hardware or realized by software, and an implementation method is arbitrary.

  As shown in FIG. 1, the display control device 20 includes a shift switch 31, a navigation device 32, a manual switch 33, a speed detection device 34, and a rotation speed detection device 35 as external devices of the vehicle instrument display device 10. Are connected, and output signals from each external device are input.

  The shift switch 31 is attached to a shift lever that changes the shift position of the transmission mounted on the vehicle, and outputs a signal indicating the current shift position. The navigation device 32 is a device that is mounted on a vehicle and supports the driver by detecting the current position of the vehicle and displaying it on a map. The manual switch 33 is a switch for switching between an automatic mode in which the shift position of the transmission is automatically changed and controlled in accordance with a driving situation and a manual mode in which the shift position of the transmission is changed and controlled by a driver's operation. . The speed detection device 34 is a device that detects the speed of the vehicle and outputs a signal indicating the current traveling speed. The rotation speed detection device 35 is a device that detects the rotation speed of an engine mounted on the vehicle and outputs a signal indicating the detected rotation speed. In addition, as these external devices, any conventional devices that have been conventionally mounted on vehicles can be applied.

  In the display control device 20, the speed meter drawing circuit 21 receives a signal indicating the traveling speed of the vehicle from the speed detection device 34, and based on the input signal, the speed as a rotary analog meter indicating the current traveling speed. Generate an image of the meter.

  The tachometer drawing circuit 22 receives a signal indicating the engine speed from the rotation speed detection device 35, and generates an image related to the tachometer as a rotary analog meter indicating the engine speed based on the input signal.

  The speedometer pointer position detection circuit 23 detects information regarding the pointer of the speedometer based on the image generated by the speedometer drawing circuit 21. The information detected by the speedometer pointer position detection circuit 23 includes, for example, the coordinates where the needle tip portion of the speedometer pointer is located, the direction vector indicated by the speedometer pointer, the length of the speedometer pointer, and the like.

  The tachometer pointer position detection circuit 24 detects information related to the tachometer pointer based on the image generated by the tachometer drawing circuit 22. The information detected by the tachometer pointer position detection circuit 24 includes, for example, the coordinates where the needle tip portion of the tachometer pointer is located, the direction vector indicated by the tachometer pointer, the length of the tachometer pointer, and the like.

  The size change processing circuit 25 is connected to the shift switch 31, the navigation device 32, and the manual switch 33, and a signal serving as a trigger for starting processing for changing the display form of the speedometer and the tachometer is input from these external devices. In this case, based on the information input from the speedometer pointer position detection circuit 23 and the tachometer pointer position detection circuit 24, the center point when the display size of the speedometer and the tachometer is enlarged or reduced is determined, and the display size is determined. Performs processing related to change.

  The display position movement circuit 26 calculates the movement amount of the display position of the speedometer and the tachometer based on the calculation result output from the size change processing circuit 25, and performs calculation processing related to the change of the display position.

  The drawing processing circuit 27 synthesizes the image relating to the speedometer generated by the speedometer drawing circuit 21 and the image relating to the tachometer generated by the tachometer drawing circuit 22 based on the calculation result obtained from the display position moving circuit 26. Then, an image to be displayed on the display screen of the display device 10 is generated. The image generated by the drawing processing circuit 27 is output to the display device 10 as a video signal or a control signal and displayed on the display screen of the display device 10.

  In the vehicle instrument display device of this embodiment, the display mode of the display device 10 is the first display mode suitable for normal driving of the vehicle, and the sport in which the driver actively operates the shift position of the transmission. It is assumed that the second display mode suitable for traveling is set.

  In the first display mode, as shown in FIG. 2, a large speedometer 41 is displayed in the left area of the display area 11 on the display screen of the display device 10, and the tachometer 42 is smaller than the speedometer 41 in the right area. Is displayed. For this reason, in the first display mode, the speedometer 41 is displayed in a display form with higher visibility than the tachometer 42, and the display form is suitable for driving with an emphasis on the traveling speed of the vehicle.

  In the second display mode, as shown in FIG. 3, a small speedometer 41 is displayed in the left area of the display area 11 on the display screen of the display device 10, and the tachometer 42 is larger than the speedometer 41 in the right area. Is displayed. For this reason, in the second display mode, the tachometer 42 is displayed in a display form with higher visibility than the speedometer 41, and the display form suitable for driving with an emphasis on the engine speed is provided. Become.

  Here, in the vehicle instrument display device 10 configured as described above, a specific case where the display control device 20 changes the display forms of the speedometer 41 and the tachometer 42 displayed on the display screen of the display device 10. This process will be described with reference to the flowchart shown in FIG. Note that the flowchart shown in FIG. 4 focuses on the process of changing the display form of each meter, and the drawing process on the display screen of the display device 10 is omitted. This drawing process is performed continuously by constantly outputting a video signal or a control signal from the drawing processing circuit 27 of the display control device 20 to the display device 10.

  Moreover, in the following description, the case where it switches from the 1st display mode shown in FIG. 2 to the 2nd display mode shown in FIG. 3 is demonstrated. Such switching of the display mode is performed, for example, when the driver operates the manual switch 33 to switch the transmission control from the automatic mode to the manual mode, and a signal indicating this switching is sent from the manual switch 33 to the size changing process. It starts by being input to the circuit 25. However, the signal serving as a trigger for starting the display mode switching process is not limited to the input signal from the manual switch 33. For example, the display mode is determined according to the input signal from the shift switch 31 or the navigation device 32. The switching process may be started.

  When the display mode switching process is started, first, in step S1, the speedometer pointer position detection circuit 23 and the tachometer pointer position detection circuit 24 use the information from the speedometer drawing circuit 21 and the tachometer drawing circuit 22 as a basis. Information regarding the position of the pointer 41a of the speedometer 41 and the position of the pointer 42a of the tachometer 42 is detected.

  Next, in step S2, the center point when the display size of the speedometer 41 and the tachometer 42 is enlarged or reduced is determined by the size change processing circuit 25 based on the information detected in step S1, and displayed. Arithmetic processing related to the size change is performed. At this time, as shown in FIG. 5, the speedometer 41 is reduced and displayed around the coordinates where the needle tip portion 41 b of the pointer 41 a is located, and the tachometer 42 is the coordinates where the needle tip portion 42 b of the pointer 42 a is located. Is displayed in an enlarged manner.

  In FIG. 5, the display states of the speedometer 41 and the tachometer 42 before the change of the display size are shown by being overlaid with broken lines for comparison of the states before and after the display size changing process. Are not actually displayed after the processing in step S2. Further, the tachometer 42 has a portion that deviates outside the range of the display area 11 on the display screen of the display device 10 due to the enlarged display. In FIG. 5, this deviated portion is also shown virtually. .

  Further, the display size changing process in step S2 may change the display size of the speedometer 41 and the tachometer 42 instantaneously, or may change the display size gradually over a predetermined time over several seconds, for example. Good.

  Since the display size changing process in step S2 is performed, the speedometer 41 and the tachometer 42 are displayed in an enlarged / reduced manner around the needle tips 41b and 42b of the hands 41a and 42a, which is a point of interest for the driver. The display positions of the needle tips 41b and 42b do not move before and after the display size changing process. For this reason, even if the display size of each meter is changed instantaneously, the driver does not need to move the viewpoint. Further, even if the driver changes the display size of each meter while not viewing each meter, there is no change in the display positions of the needle tips 41b and 42b before and after the display size changing process. , Visibility is not impaired.

  Here, only by performing the display size changing process in step S2, a part of the enlarged tachometer 42 deviates outside the display area 11, and therefore the display position of the tachometer 42 is moved to move within the display area 11. It is necessary to fit in. Therefore, in step S3 following step S2, the display position moving circuit 26 determines whether or not all the meters are within the display area 11 on the display screen of the display device 10. As a result of the determination, if all the meters are within the display area 11 of the display screen, the display mode switching process is terminated, and if not, the process proceeds to step S4.

  Next, in step S4, the display position moving circuit 26 determines whether or not the orientation of the pointers 41a and 42a of each meter has changed significantly before and after the display size changing process in step S2. As a result of this determination, if the direction of the pointer has not changed much, the process proceeds to step S5, and if the direction of the pointer has changed significantly, the process proceeds to step S6. It should be noted that the rotation angle of the pointers 41a and 42a of each meter serving as a reference for this determination may be set to an arbitrary value in advance, for example, about 15 °.

  When it is determined in step S4 that the direction of the pointer has not changed much before and after the display size changing process and the process proceeds to step S5, the display position moving circuit 26, as shown in FIG. The display position of the meter 41 and the tachometer 42 is moved in a direction parallel to the pointers 41a and 42a of each meter. At this time, the moving direction of each meter is the center direction of the pointer 41a for the speedometer 41 displayed in a reduced size, and the needle tip direction of the pointer 42a for the tachometer 42 displayed in an enlarged manner.

  In step S2, which is the preceding process of step S5, when the display size changing process is performed instantaneously, each process from the start of the display size changing process to the start of the display position moving process in step S5. Since the rotation angles of the indicator hands 41a and 42a of the meter are small, the speedometer 41 and the tachometer 42 can be appropriately accommodated in the display area 11 by moving each meter in the above-described direction. In addition, by moving each meter in a direction parallel to the hands 41a and 42a, the driver can easily recall the moving direction of each meter due to the presence of a linear pointer shaft, so the display position of each meter has changed. Even if it is a case, it is excellent in the followability of a line of sight and the discoverability of the movement destination of each meter when the line of sight is separated.

  The display position moving process in step S5 may be performed by instantaneously moving the display sizes of the speedometer 41 and the tachometer 42. For example, it is assumed that the display position is gradually moved over a predetermined time over several seconds. Also good. When the display position of each meter is gradually moved, the visibility improvement effect of each meter can be further enhanced.

  In addition, when the display position movement process in step S5 is performed, a process of superimposing and displaying the movement trajectories of the hands 41a and 42a may be performed on the hands 41a and 42a of the speedometer 41 and the tachometer 42, respectively. In this case, since the moving direction of the needle tips 41b and 42b, which are gazing points, is explicitly displayed, the display position moving process is performed while the driver is keeping an eye on the display device 10. Even so, it is possible to instantly find the destination of each meter. Moreover, the visibility of each meter during the movement of each meter can be further improved by superimposing the movement trajectories of the hands 41a and 42a in this way.

  In FIG. 6, the display states of the speedometer 41 and the tachometer 42 before the movement of the display position are overlaid with broken lines for comparison of the states before and after the display position movement process. Are not actually displayed after the processing in step S5.

  Next, in step S6, the display position moving circuit 26 determines whether or not there is a non-display portion that does not fit in the display area 11 for each of the speedometer 41 and the tachometer 42 after the display position moving process in step S5. Determined. As a result of the determination, if there is a non-display portion, the process proceeds to step S7. If there is no non-display portion and both the speedometer 41 and the tachometer 42 are within the display area 11, a display mode switching process is performed. finish.

  In step S7, the display position moving circuit 26 performs display position adjustment processing for gradually moving the display position of each meter in the direction in which the speedometer 41 and the tachometer 42 are within the display area 11, as shown in FIG. Do. In addition, since the moving direction of the display position of each meter by this display position adjustment process is performed irrespective of the direction of the hands 41a and 42a of each meter, the display for moving each meter in a direction parallel to the hands 41a and 42a. It is desirable to move the display position of each meter at a speed slower than the movement speed in the position movement process. Thereby, the fall of visibility by the movement of each meter can be prevented.

  By the display position adjustment process in step S7, both the speedometer 41 and the tachometer 42 are accommodated in the display area 11, and finally become equivalent to the display state shown in FIG. Thereby, the switching process from the first display mode to the second display mode is completed.

  In FIG. 7, the display states of the speedometer 41 and the tachometer 42 before adjustment of the display position are shown by being overlaid with broken lines in order to compare the states before and after the display position adjustment processing. Are not actually displayed after the processing in step S7.

  The above is the processing when it is determined in step S4 that the orientation of the pointer has not changed much before and after the display size change processing, but in step S4 the orientation of the pointer has changed significantly before and after the display size change processing. When it is determined, the display position moving circuit 26 performs display rotation processing in step S8. Here, the display rotation process in step S8 will be described. For example, as shown in FIG. 8, before and after the display size changing process in step S2, the pointers 41a and 42a of each meter are greatly rotated within a short time, so that the directions of the hands 41a and 42a enlarge or reduce each meter. It can be considered that the pointers 41 a and 42 a of each meter deviate from the display area 11 on the display screen of the display device 10 depending on circumstances. FIG. 8 shows an example in which the pointer 42a of the tachometer 42 is about to deviate from the display area 11, and a state before the display position of the pointer 42a is largely changed is virtually indicated by a broken line.

  At this time, as shown in FIG. 9, the display position moving circuit 26 has the needle tip portion 42 b at the center of the coordinates where the needle tip portion 42 b is located immediately before the pointer 42 a in the tachometer 42 deviates from the display area 11. The entire tachometer 42 is rotated by an angle equivalent to the rotation angle of the pointer 42a of the tachometer 42 until reaching the position. By this display rotation process, the outer frame shape of the tachometer 42 is rotated and displayed around the needle tip 42b of the pointer 42a, but the display of the tachometer 42 is controlled so as to move in parallel without rotating. Thereby, although the absolute position of the needle tip portion 42b of the pointer 42a does not change, the position of the needle tip portion 42b and the dial changes, and the value of the dial pointed to by the needle tip portion 42b matches the rotation of the pointer 42a. Changes to a value. Therefore, the value of the dial pointed to by the needle tip portion 42b does not change before and after the display rotation process.

  By performing the display rotation process in step S8, the needle tip portion is stored in the display area 11 even when the pointer of the enlarged meter is greatly rotated immediately after one of the meters is enlarged. Can be displayed.

  In FIG. 9, for comparison of the state before and after the display rotation process, the display states of the speedometer 41 and the tachometer 42 before the display rotation process are shown by being overlaid with broken lines. It is not actually displayed after the processing in step S8.

  Further, when performing the display rotation process, it is desirable to move and display the display position of the speedometer 41 in a direction parallel to the pointer 41a so that the display ranges of the speedometer 41 and the tachometer 42 do not overlap each other. Thereby, the visibility of the speedometer 41 and the tachometer 42 can be ensured.

  When the display rotation process in step S8 is completed, the display position moving circuit 26 advances the process to step S6. If there is a non-display portion, the display position adjustment process in step S7 is performed. As a result, as shown in FIG. 10, both the speedometer 41 and the tachometer 42 are within the display area 11 on the display screen of the display device 10, and finally the display state shown in FIG. Thereby, the switching process from the first display mode to the second display mode is completed.

  In FIG. 10, the display states of the speedometer 41 and the tachometer 42 before adjustment of the display position are shown with a broken line for comparison of the state before and after the display position adjustment process. Are not actually displayed after the processing in step S7.

  As described above in detail with specific examples, according to the vehicle instrument display device of the present embodiment, the display size of the image of the rotary analog meter displayed on the display device 10 is enlarged or reduced. In this case, since the process paying attention to the display position of the meter pointer is performed, the display size can be changed without largely changing the display position of the needle tip portion of the pointer that is the driver's point of sight. Therefore, even if the display size changing process is performed while the driver keeps an eye on the rotary analog meter, the gaze point is not lost. In addition, even if the display size change processing is performed while the driver is gazing at the rotary analog meter, the position of the needle tip of the pointer, which is the driver's point of sight, does not change significantly. And the visibility of the rotary analog meter can be improved.

  In the vehicle instrument display device described above, as an image of the rotary analog meter displayed on the display device 10, a tachometer 42 indicating the number of revolutions of the engine mounted on the vehicle, and a speedometer indicating the speed of the vehicle. 41 has been described as being displayed in the display area 11 of the same display screen. However, the number and type of rotary analog meters displayed by the vehicle instrument display device 10 are arbitrary. For example, an image of a single rotary analog meter may be displayed, and is exemplified in the present embodiment. In addition to the tachometer 42 and the speedometer 41, images of three or more rotary analog meters such as a fuel meter indicating the remaining amount of fuel or a temperature meter indicating the temperature of cooling water for cooling the engine may be displayed. In addition, the instruments displayed by the vehicle instrument display device are not limited to the rotary analog meter. For example, in addition to the rotary analog meter to be subjected to the display mode change process, the current time is indicated. A display unit indicating a shift position of a transmission mounted on a watch or a vehicle may be displayed at a fixed position on the display screen.

  Further, in the vehicle instrument display device, when each meter is moved in the direction parallel to the pointers 30a and 31a so that each meter is stored in the display area 11, each meter is moved and displayed instantaneously. If not, it is desirable to display the moving speed of each meter slowly, for example, over a period of several seconds. Thereby, the visibility of each meter by the driver can be improved even during the movement display process.

  In the above-described embodiment, it is assumed that the speedometer 41 is disposed in the left region of the display region 11 and the tachometer 42 is disposed in the right region of the display region 11, but the driver is active. In the second display mode suitable for sports driving in which the shift position of the transmission is operated, there is a tendency that the engine speed continues to be relatively low at a relatively low speed. Therefore, contrary to the above-described embodiment, it is also effective to arrange the speedometer 41 in the right area of the display area 11 and arrange the tachometer 42 in the left area of the display area 11. By arranging each meter in this way, it is possible to increase the frequency with which the meter is accommodated in the display area 11 when each meter is moved in the direction of the hands 30a and 31a. This is because, when the needle tip portion of the pointer is directed outward with respect to the display area 11, when the display size changing process is performed for each meter, a portion deviating from the display area 11 is reduced.

It is a block diagram which shows schematic structure of the instrument display apparatus for vehicles to which this invention is applied. It is a figure which shows an example of the display screen displayed by the said instrument display apparatus for vehicles in a 1st display mode. It is a figure which shows an example of the display screen displayed by the said vehicle instrument display apparatus in a 2nd display mode. It is a flowchart for demonstrating the switching process of the display mode by the said instrument display apparatus for vehicles. It is a figure for demonstrating the display size change process by the said instrument display apparatus for vehicles, and is a schematic diagram which shows an example of a display screen. It is a figure for demonstrating the display position movement process by the said instrument display apparatus for vehicles, and is a schematic diagram which shows an example of a display screen. It is a figure for demonstrating the display position adjustment process by the said instrument display apparatus for vehicles, and is a schematic diagram which shows an example of a display screen. It is a figure for demonstrating the display position rotation process by the said instrument display apparatus for vehicles, and is a schematic diagram which shows an example of a display screen. It is a figure for demonstrating the display position rotation process by the said instrument display apparatus for vehicles, and is a schematic diagram which shows an example of a display screen. It is a figure for demonstrating the display position adjustment process by the said instrument device for vehicles, and is a schematic diagram which shows an example of a display screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display apparatus 20 Display control apparatus 21 Speedometer drawing circuit 22 Tachometer drawing circuit 23 Speedometer pointer position detection circuit 24 Tachometer pointer position detection circuit 25 Size change processing circuit 26 Display position moving circuit 27 Drawing processing circuit 41 Speedometer 41a Pointer 41b Needle Tip 42 Tachometer 42a Pointer 42b Needle tip

Claims (9)

In a vehicle instrument display device for displaying a rotary analog meter as an image indicating a state in each part of the vehicle as an image,
A display device having a display screen for displaying an image of the rotary analog meter;
A display control device for controlling the display operation of the display device,
When the display control device changes the display size of the rotary analog meter on the display screen of the display device, the rotary analog meter is centered on the coordinates of the needle tip portion of the pointer of the rotary analog meter. A vehicle instrument display device characterized by enlarging or reducing the size.   The display control device immediately before changing from the display area when the pointer of the rotary analog meter rotates to a position that deviates from the display area of the display screen after changing the display size of the rotary analog meter. 2. The vehicle instrument display device according to claim 1, wherein display rotation processing is performed to rotate and display the rotary analog meter around a coordinate where the needle tip portion of the pointer is positioned.   The display control device, after changing the display size of the rotary analog meter, in a direction parallel to the pointer of the rotary analog meter and in a direction in which the display range of the rotary analog meter in the display screen is expanded. The vehicle instrument display device according to claim 1, wherein a display position moving process for moving a display position of the rotary analog meter is performed.   4. The vehicle instrument display device according to claim 3, wherein the display control device superimposes and displays a movement locus of a pointer of the rotary analog meter when performing the display position movement process. 5.   The display control device, after performing the display position movement process, performs a display position adjustment process for gradually moving the display position of the rotary analog meter in a direction in which the rotary analog meter is within the display screen. The vehicular instrument display device according to claim 3. The display device displays an image of a first rotary analog meter and an image of a second rotary analog meter in the display screen,
The display control device enlarges one of the first and second rotary analog meters, changes the display size to reduce the other, and then changes the display size to the first and second rotary analog meters. When performing the display position movement process, the display positions of the first and second rotary analog meters are moved in a direction in which the display ranges of the first and second rotary analog meters do not overlap each other. The vehicle instrument display device according to claim 3. The first rotary analog meter is a tachometer that indicates the number of revolutions of an engine mounted on the vehicle, and is disposed in a left region of the display screen in the display device,
The vehicle according to claim 6, wherein the second rotary analog meter is a speedometer that indicates a speed of the vehicle, and is disposed in a right region of the display screen in the display device. Instrument display device.   The display control device starts processing to change the display size of the rotary analog meter when a signal requesting switching of the display mode of the display device is input from an externally connected device. The vehicle instrument display device according to claim 1. A vehicle instrument display method for displaying a rotary analog meter as an image indicating a state in each part of the vehicle as an image,
A vehicular instrument characterized in that when the display size of the rotary analog meter is changed, the rotary analog meter is enlarged or reduced about the coordinates where the needle tip portion of the pointer of the rotary analog meter is located. Class display method.

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