JP7476878B2 - Display device - Google Patents

Description

The present invention relates to a display device.

Conventionally, there are known display devices that display a pointer and a dial as an image on a display. For example, in a graphic meter display device described in Patent Document 1, when the rotation speed of the pointer is equal to or greater than a threshold, a motion blur pointer image is displayed in the trajectory direction that is opposite to the rotation direction of the pointer.

JP 2008-8637 A

The motion blur pointer image described in Patent Document 1 above had limitations in making the pointer movement appear smooth.

The present invention has been made in consideration of the above-mentioned situation, and aims to provide a display device that can make the movement of the indication part appear smoother.

In order to achieve the above-mentioned object, a display device according to the present invention comprises a display unit which displays an image including an indication portion, and a control unit which controls the display unit to move the indication portion within the image, and when the moving speed of the indication portion is equal to or greater than a threshold value, displays a blurred image including a traveling direction image portion located in the traveling direction of the indication portion, wherein the blurred image includes, in addition to the traveling direction image portion, a trajectory direction image portion located in the trajectory direction of a pointer image which is the indication portion, the traveling direction image portion and the trajectory direction image portion form a frame surrounding the indication portion, and the brightness of the traveling direction image portion is set lower than the brightness of the trajectory direction image portion.
In addition, a display device from another perspective comprises a display unit that displays an image including an indication portion, and a control unit that controls the display unit to move the indication portion within the image, and displays a blurred image including a traveling direction image portion located in the traveling direction of the indication portion when the moving speed of the indication portion is equal to or greater than a threshold value, and the control unit displays a first blurred pointer image, which is the blurred image, when the moving speed of a pointer image, which is the indication portion, is equal to or greater than a first threshold value, which is the threshold value, and displays a second blurred pointer image in the direction of the trajectory of the pointer image and at a position away from the pointer image, when the pointer image is equal to or greater than a second threshold value that is greater than the first threshold value.

According to the present invention, the movement of the indicator can be made to appear smoother on a display device.

1 is a front view of an image displayed on a liquid crystal panel according to a first embodiment of the present invention; 1 is a block diagram of a display device according to a first embodiment of the present invention. 2 is an enlarged view of a portion of an image displayed on the liquid crystal panel according to the first embodiment of the present invention; FIG. In the first embodiment of the present invention, (a) is an enlarged view showing a blurred pointer image when the pointer image in range C of Figure 3 rotates clockwise, (b) is an enlarged view showing the blurred pointer image when the pointer image rotates counterclockwise, and (c) is an enlarged view of the blurred pointer image in range B of Figure 3. In a first embodiment of the present invention, (a) is a schematic diagram of a pointer image when a blurred pointer image is superimposed on the pointer image as the pointer image rotates in a clockwise direction, and (b) is a schematic diagram of a pointer image when a blurred pointer image is superimposed on the pointer image as the pointer image rotates in a counterclockwise direction. 5 is a flowchart of a needle display process of a control unit according to the first embodiment of the present invention. 13 is a schematic diagram of a pointer image according to a second embodiment of the present invention when a blurred pointer image is superimposed on the pointer image; FIG. 13A and 13B are schematic diagrams showing an original blurred image and a blurred pointer image according to a second embodiment of the present invention. In the comparative example, (a) is a graph showing the brightness of the pointer image in the width direction, (b) is a graph showing the brightness of the blurred pointer image in the width direction, and (c) is a graph showing the brightness obtained by adding (a) and (b). Regarding the third embodiment of the present invention, (a) is a graph showing the brightness of the pointer image in the width direction, (b) is a graph showing the brightness of the blurred pointer image in the width direction, and (c) is a graph showing the brightness obtained by adding (a) and (b). FIG. 13 is a schematic diagram showing a blur pointer image according to a third embodiment of the present invention.

First Embodiment
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a display device according to the present invention will now be described with reference to the accompanying drawings. As shown in Fig. 1, a display device 10 is a graphic meter display device that displays an indicator showing vehicle speed by means of an image.

2, the display device 10 includes a control unit 55 that controls the entire display device 10, a liquid crystal panel 20, and a light source 30 that illuminates the liquid crystal panel 20. The control unit 55 includes a microcomputer 50 and a graphic display controller (GDC) 40 that draws an image on the liquid crystal panel 20 under the control of the microcomputer 50.

The GDC 40, under the control of the microcomputer 50, draws an image on the liquid crystal panel 20. The liquid crystal panel 20 is a TFT (Thin Film Transistor) type liquid crystal panel, and under the control of the GDC 40, adjusts the light transmittance for each pixel.
The light source 30 is composed of an LED (Light Emitting Diode) and irradiates the liquid crystal panel 20 with light, for example, white light, under the control of the microcomputer 50 .
The microcomputer 50 comprises a CPU 51 which performs various controls in accordance with a predetermined program, a ROM 52 which stores the programs executed by the CPU 51, original images, etc., and a RAM 53 which stores various data and has a working area necessary for the processing operations of the CPU 51.
ROM 52 stores, for example, still image data showing a dial for a meter, pointer image data showing a pointer that rotates on this dial, blur effect image data for performing a blur effect on the pointer, and various threshold values TH1 and TH2.
The microcomputer 50 acquires vehicle information, including vehicle speed, from an external source, and displays an image including the vehicle information on the liquid crystal panel 20 via the GDC 40 .

The microcomputer 50 displays background image Ib as still image data via the GDC 40, as shown in Fig. 1. In background image Ib, the areas corresponding to the numbers and scales are displayed in white by transmitting light, and the background other than those areas is displayed in black by not transmitting light.

The microcomputer 50 displays the pointer image 80 as pointer image data via the GDC 40, as shown in FIG. 3. The pointer image 80 is formed in a white bar shape, and rotates around the bottom end of the pointer image 80 relative to the numerical values and scale of the background image Ib. The pointer image 80 is set to the same light transmittance across the entire area of the pointer image 80. The microcomputer 50 acquires vehicle information, including vehicle speed, from the outside at a predetermined cycle (e.g., 1/60th of a second), and updates the position of the pointer image 80. This causes the pointer image 80 to rotate in accordance with the vehicle speed.

The microcomputer 50 displays blur pointer images 60, 71, and 72 expressing the blur of a pointer image 80 as blur effect image data via the GDC 40, as shown in FIGS.
As shown in FIG. 3 and FIG. 4C, the blurred pointer image 60 is located away from the pointer image 80, in the opposite direction to the rotation direction of the pointer image 80, and is formed in a white bar shape with gradation. The blurred pointer image 60 is displayed to express an afterimage of the pointer image 80 when the rotation speed of the pointer image 80 is rotating at a threshold value TH2 or more. For example, when the pointer image 80 rotates in the clockwise direction Cw, as shown in FIG. 3, the blurred pointer image 60 is displayed at a position in the counterclockwise direction Ucw of the pointer image 80. On the other hand, when the pointer image 80 rotates in the counterclockwise direction Ucw, although not shown, the blurred pointer image 60 is displayed at a position in the clockwise direction Cw of the pointer image 80. In order to express the movement trajectory of the pointer image 80, the display position of the blurred pointer image 60 relative to the pointer image 80 is set by the control unit 55 in accordance with the speed and acceleration of the pointer image 80. Therefore, the processing load of the control unit 55 for displaying the blurred pointer image 60 is larger than that of the blurred pointer images 71 and 72.

As shown in Fig. 4(c), the blur pointer image 60 has a gradation set so that the light transmittance decreases from the center toward the outside in the rotation direction of the blur pointer image 60, and decreases toward the inside in the radial direction perpendicular to the rotation direction. The width of the blur pointer image 60 in the rotation direction (left and right direction in Fig. 4) is formed to become smaller toward the inside in the radial direction (downward direction in Fig. 4).

As shown in FIGS. 4A and 4B, the blurred pointer images 71 and 72 form a frame surrounding the periphery of the pointer image 80 and move as the pointer image 80 rotates.
4A, the blurred pointer image 71 is displayed when the rotation speed of the pointer image 80 is equal to or greater than a threshold value TH1 and the pointer image 80 rotates in a clockwise direction Cw. The blurred pointer image 71 includes a cutout portion 71a formed in an area overlapping the pointer image 80, a clockwise side image portion 71b formed in the clockwise direction Cw relative to the cutout portion 71a, and a counterclockwise side image portion 71c formed in the counterclockwise direction Ucw relative to the cutout portion 71a.
As shown in FIG. 5A, the cutout portion 71a displays the pointer image 80. The clockwise side image portion 71b and the counterclockwise side image portion 71c are formed so that the width W along the rotation direction of the pointer image 80 becomes shorter toward the rotation center side of the pointer image 80 (the lower side of FIG. 5). That is, the clockwise side image portion 71b and the counterclockwise side image portion 71c are formed in a fan shape. The width W of the counterclockwise side image portion 71c is formed to be longer than the width W of the clockwise side image portion 71b. In other words, the area of the counterclockwise side image portion 71c is larger than the area of the clockwise side image portion 71b. The brightness of the counterclockwise side image portion 71c is set to be lower than the brightness of the pointer image 80 and higher than the brightness of the clockwise side image portion 71b. That is, the magnitude relationship of each brightness is set as follows: "brightness of the pointer image 80>brightness of the counterclockwise side image portion 71c>brightness of the clockwise side image portion 71b". By setting the brightness in this way, a more natural blur effect can be achieved.
The brightness for this magnitude comparison may be the average brightness of each area in the needle image 80, the counterclockwise side image portion 71c, and the clockwise side image portion 71b, or may be the maximum brightness of each area.
The brightness can be increased by increasing the light transmittance of the liquid crystal panel 20 or by increasing the output of the light source 30 .

As shown in FIG. 4(b) and FIG. 5(b), the blurred pointer image 72 is displayed when the rotation speed of the pointer image 80 is equal to or greater than the threshold value TH1 and the pointer image 80 rotates in the counterclockwise direction Ucw. The blurred pointer image 72 includes a cutout portion 72a formed in an area overlapping the pointer image 80, a clockwise side image portion 72b formed in the clockwise direction Cw relative to the cutout portion 72a, and a counterclockwise side image portion 72c formed in the counterclockwise direction Ucw relative to the cutout portion 72a. As shown in FIG. 5(b), the pointer image 80 is displayed in the cutout portion 72a. The clockwise side image portion 72b and the counterclockwise side image portion 72c are formed so that the width W along the rotation direction of the pointer image 80 becomes shorter as they approach the rotation center side of the pointer image 80 (the lower side of FIG. 5). That is, the clockwise side image portion 72b and the counterclockwise side image portion 72c are formed in a fan shape. The width W of the counterclockwise side image portion 72c is formed shorter than the width W of the clockwise side image portion 72b. In other words, the area of the counterclockwise side image portion 72c is smaller than the area of the clockwise side image portion 72b. The brightness of the clockwise side image portion 72b is set lower than the brightness of the pointer image 80 and higher than the brightness of the counterclockwise side image portion 72c. In other words, the magnitude relationship of each brightness is set as follows: "brightness of the pointer image 80>brightness of the clockwise side image portion 72b>brightness of the counterclockwise side image portion 72c." By setting each brightness in this manner, a more natural blur effect can be achieved.

Next, a needle display process performed by the microcomputer 50 will be described with reference to the flow chart of Fig. 6. This needle display process is executed repeatedly.
First, the microcomputer 50 judges whether the rotation speed of the pointer image 80 is equal to or greater than a threshold value TH1 (step S101). The threshold value TH1 is set to, for example, 20 to 30 deg/sec. When the microcomputer 50 judges that the rotation speed of the pointer image 80 is less than the threshold value TH1 (step S101; NO), it determines that the rotation speed of the pointer image 80 is in the low-speed region, and displays only the pointer image 80 without displaying the blurred pointer images 60, 71, and 72 (step S102), and ends the pointer display process.

On the other hand, when the microcomputer 50 determines that the rotation speed of the pointer image 80 is equal to or greater than the threshold value TH1 (step S101; YES), it determines whether or not the rotation speed of the pointer image 80 is equal to or greater than the threshold value TH2 (step S103). The threshold value TH2 is set to, for example, 40 to 50 deg/sec. When the microcomputer 50 determines that the rotation speed of the pointer image 80 is less than the threshold value TH2 (step S103; NO), it determines that the rotation speed of the pointer image 80 is in the medium speed range, and determines whether or not the rotation direction of the pointer image 80 is the clockwise direction Cw (step S104).
When the microcomputer 50 determines that the rotation direction of the pointer image 80 is the clockwise direction Cw (step S104; YES), it displays the pointer image 80 and one blurred pointer image 71 (step S105), and ends the pointer display process.
On the other hand, if the microcontroller 50 determines that the rotation direction of the pointer image 80 is not the clockwise direction Cw, i.e., the counterclockwise direction Ucw (step S104; NO), it displays the pointer image 80 and one blur pointer image 72 (step S106) and terminates the pointer display process.
By using the blurred pointer images 71 and 72 in steps S105 and S106, when the rotation speed of the pointer image 80 is in the medium speed range, a blur effect according to the rotation direction of the pointer image 80 can be achieved with a relatively light processing load.

On the other hand, when the microcomputer 50 determines that the rotation speed of the pointer image 80 is equal to or greater than the threshold value TH2 (step S103; YES), it determines that the rotation speed of the pointer image 80 is in the high-speed region and determines whether the rotation direction of the pointer image 80 is the clockwise direction Cw (step S107). When the microcomputer 50 determines that the rotation direction of the pointer image 80 is the clockwise direction Cw (step S107; YES), it displays the pointer image 80 and the two blurred pointer images 60, 71 (step S108) and ends the pointer display process. Here, since the two blurred pointer images 60, 71 are displayed, the blur effect is stronger than that of step S105. Therefore, even when the rotation speed of the pointer image 80 is high, a natural blur effect is possible.
On the other hand, when the microcomputer 50 determines that the rotation direction of the pointer image 80 is not the clockwise direction Cw, i.e., the counterclockwise direction Ucw (step S107; NO), it displays the pointer image 80 and the two blurred pointer images 60, 72 (step S109) and ends the pointer display process. Here, the two blurred pointer images 60, 72 are displayed, so the blur effect is stronger than in step S106. Therefore, even if the rotation speed of the pointer image 80 is high, a natural blur effect can be achieved.
This is the end of the explanation of the needle display process.

Next, the action of the pointer image 80 when it rotates in the clockwise direction Cw from the original position to the target position and stops at the target position will be described.
The rotation speed of the pointer image 80 gradually increases from the original position toward the target position. When the rotation speed of the pointer image 80 is less than a threshold TH1, the pointer image 80 is displayed, and the blurred pointer images 71 and 72 are not displayed. Then, when the rotation speed of the pointer image 80 increases and becomes equal to or greater than the threshold TH1 and less than a threshold TH2, the blurred pointer image 71 is displayed. The blurred pointer image 71 moves together with the pointer image 80.
Furthermore, when the rotation speed of the pointer image 80 increases toward the target position and becomes equal to or greater than a threshold value TH2, the blur pointer image 60 is displayed while maintaining the blur pointer image 71. The display position of the blur pointer image 60 is set by the control unit 55 in accordance with the speed and acceleration of the pointer image 80.

Then, as the pointer image 80 approaches the target position, the rotation speed gradually decreases, and when the rotation speed of the pointer image 80 becomes less than a threshold value TH2, the blurred pointer image 60 is erased while the blurred pointer image 71 is maintained.
Furthermore, the rotation speed of the pointer image 80 is decreased, and when the rotation speed of the pointer image 80 becomes less than the threshold value TH1, the blurred pointer image 71 is erased. Then, the pointer image 80 reaches the target position without the blurred pointer images 71 and 60.
When the pointer image 80 rotates in the counterclockwise direction Ucw from the original position to the target position, the operation is the same as that described above, except that the blur pointer image 72 is displayed instead of the blur pointer image 71 .

(effect)
According to the first embodiment described above, the following effects are achieved.
(1) The display device 10 includes a liquid crystal panel 20, which is an example of a display unit that displays an image including a pointer image 80, which is an example of an indicator, and a control unit 55 that controls the liquid crystal panel 20 to move the pointer image 80 within the image. When the moving speed of the pointer image 80 is equal to or greater than a threshold value TH1 and the rotation direction of the pointer image 80 is the clockwise direction Cw, the control unit 55 displays a blurred pointer image 71, which is an example of a blurred image, including a clockwise side image portion 71b, which is an example of a traveling direction image portion, located in the traveling direction of the pointer image 80. On the other hand, when the moving speed of the pointer image 80 is equal to or greater than the threshold value TH1 and the rotation direction of the pointer image 80 is the counterclockwise direction Ucw, the control unit 55 displays a blurred pointer image 72, which has a counterclockwise side image portion 72c, which is an example of a traveling direction image portion, located in the traveling direction of the pointer image 80.
According to this configuration, the clockwise side image portion 71b of the blurred pointer image 71 or the counterclockwise side image portion 72c of the blurred pointer image 72 is displayed in the moving direction of the pointer image 80. This makes it possible to compensate for the delay in the responsiveness of the liquid crystal panel 20. Also, compared with the conventional case where the blurred pointer image is displayed only in the trajectory direction of the pointer image, the movement of the pointer image 80 can be made to look smoother, enabling a more natural blur effect.

(2) When the moving speed of the pointer image 80 is equal to or greater than the threshold value TH1 and the rotation direction of the pointer image 80 is the clockwise direction Cw, the blurred pointer image 71 includes, in addition to the clockwise side image portion 71b, a counterclockwise side image portion 71c, which is an example of a trajectory direction image portion located in the trajectory direction of the pointer image 80. The brightness of the clockwise side image portion 71b is set lower than the brightness of the counterclockwise side image portion 71c. On the other hand, when the moving speed of the pointer image 80 is equal to or greater than the threshold value TH1 and the rotation direction of the pointer image 80 is the counterclockwise direction Ucw, the blurred pointer image 72 includes, in addition to the counterclockwise side image portion 72c, a clockwise side image portion 72b, which is an example of a trajectory direction image portion located in the trajectory direction of the pointer image 80. The brightness of the counterclockwise side image portion 72c is set lower than the brightness of the clockwise side image portion 72b.
According to this configuration, the brightness of the counterclockwise side image portions 71c, 72c and the brightness of the clockwise side image portions 71b, 72b are adjusted according to the rotation direction of the pointer image 80, thereby enabling a more natural blur effect.

(3) The blurred pointer images 71 and 72 have cutouts 71 a and 72 a in which the areas corresponding to the pointer image 80 are cut out so that the blurred pointer images 71 and 72 do not overlap the pointer image 80 .
According to this configuration, the blurred pointer images 71, 72 are prevented from overlapping with the pointer image 80, thereby preventing an increase in brightness of the overlapping area when the blurred pointer images 71, 72 overlap with the pointer image 80, and thus preventing the overlapping area from appearing to emit light.

(4) When the movement speed of the pointer image 80 is equal to or greater than a threshold value TH1, which is an example of a first threshold value, the control unit 55 displays blur pointer images 71, 72, which are an example of a first blur pointer image, and when the movement speed of the pointer image 80 is equal to or greater than a threshold value TH2, which is an example of a second threshold value greater than the threshold value TH1, the control unit 55 displays blur pointer image 60, which is an example of a second blur pointer image, in the direction of the trajectory of the pointer image 80 and at a position away from the pointer image 80.
When performing a blur effect using the blur pointer image 60, it is necessary to set the position of the blur pointer image 60 in accordance with the speed and acceleration of the pointer image 80, which places a greater processing burden on the control unit 55 than when performing a blur effect using the blur pointer images 71, 72. According to the above configuration, when the moving speed of the pointer image 80 is equal to or greater than the threshold value TH1 and less than the threshold value TH2, the blur effect is not performed using the blur pointer image 60. This makes it possible to reduce the processing burden on the control unit 55.

Second Embodiment
A second embodiment of a display device according to the present invention will be described with reference to the drawings. The following description will focus on the differences from the first embodiment.
In this embodiment, instead of the blur pointer images 71 and 72 according to the first embodiment, a blur pointer image 73 is displayed as shown in FIG.
The blur pointer image 73 has a cutout portion 73a, a clockwise side image portion 73b, and a counterclockwise side image portion 73c, similar to the blur pointer images 71 and 72. The clockwise side image portion 73b and the counterclockwise side image portion 73c each have the same width W. The brightness balance of the clockwise side image portion 73b and the counterclockwise side image portion 73c in the blur pointer image 73 is adjusted according to the rotation direction of the pointer image 80.
As shown in Figure 8, when the rotation direction of the pointer image 80 is the clockwise direction Cw, a clockwise blur pointer image 73Cw is displayed in which the brightness of the clockwise side image portion 73b in the blur pointer image 73 is set lower than the brightness of the counterclockwise side image portion 73c.
On the other hand, when the rotation direction of the pointer image 80 is the counterclockwise direction Ucw, a counterclockwise blurred pointer image 73Ucw is displayed in which the brightness of the counterclockwise side image portion 73c in the blurred pointer image 73 is set lower than the brightness of the clockwise side image portion 73b.

Next, a method for generating the blur pointer image 73 will be described.
The microcomputer 50 reads out the original blurred image 173 shown in Fig. 8 stored in the ROM 52. The original blurred image 173 includes a cutout portion 173a, a clockwise side image portion 173b, and a counterclockwise side image portion 173c. The brightness of the clockwise side image portion 173b and the counterclockwise side image portion 173c are each set to an initial value.
When the microcontroller 50 determines that the rotation direction of the pointer image 80 is the counterclockwise direction Ucw, it generates a counterclockwise blur pointer image 73Ucw as the blur pointer image 73 by setting the brightness of the counterclockwise side image portion 173c lower than the brightness of the clockwise side image portion 173b.
On the other hand, when the microcontroller 50 determines that the rotation direction of the pointer image 80 is the clockwise direction Cw, it generates a clockwise blur pointer image 73Cw as the blur pointer image 73 by setting the brightness of the clockwise side image portion 173b lower than the brightness of the counterclockwise side image portion 173c.
The microcomputer 50 displays the generated blur pointer image 73 on the liquid crystal panel 20 .
As described above, a clockwise blur pointer image 73Cw and a counterclockwise blur pointer image 73Ucw can be generated from one original blur image 173.

(effect)
According to the second embodiment described above, the following effects are achieved.
(1) The display device 10 includes a ROM 52, which is an example of a storage unit, that stores one original blurred image 173 obtained by combining a clockwise side image portion 173b and a counterclockwise side image portion 173c that is located in the counterclockwise direction Ucw relative to the clockwise side image portion 173b. When the pointer image 80 rotates in the clockwise direction Cw, the control unit 55 generates a clockwise blurred pointer image 73Cw by setting the brightness of the clockwise side image portion 173b in the original blurred image 173 lower than that of the counterclockwise side image portion 173c, and when the pointer image 80 rotates in the counterclockwise direction Ucw, the control unit 55 generates a counterclockwise blurred pointer image 73Ucw by setting the brightness of the counterclockwise side image portion 173c in the original blurred image 173 lower than that of the clockwise side image portion 173b.
The clockwise blur pointer image 73Cw and the counterclockwise blur pointer image 73Ucw can be generated simply by adjusting the brightness of the clockwise side image portion 173b and the brightness of the counterclockwise side image portion 173c in one original blur image 173. Therefore, there is no need to prepare two original blur images, and the amount of image data stored in the ROM 52 of the microcomputer 50 can be reduced.
Furthermore, by displaying both the clockwise side image portion 73b and the counterclockwise side image portion 73c, the boundary between the clockwise side image portion 73b and the counterclockwise side image portion 73c becomes less noticeable, and a less unnatural looking blurred pointer image 73 can be displayed.

Third Embodiment
A display device according to a third embodiment of the present invention will be described with reference to the drawings, focusing on the differences from the second embodiment.
11, the blur pointer image 74 in this embodiment does not have a cutout portion. Therefore, the blur pointer image 74 has an overlapping region G where it overlaps with the pointer image 80.

Figures 9 (a) and 10 (a) are graphs showing the brightness of the pointer image 80 in the width direction of the pointer image 80, Figures 9 (b) and 10 (b) are graphs showing the brightness of the blurred pointer image 74 in the width direction of the pointer image 80, and Figures 9 (c) and 10 (c) are graphs showing the brightness obtained by adding the brightness of the pointer image 80 and the brightness of the blurred pointer image 74.

In the overlapping region G where the blurred pointer image 74 and the pointer image 80 overlap, the combined brightness shown in Fig. 9(c) which is a comparative example is higher than the brightness of the pointer image 80 before the blurred pointer image 74 is overlapped as shown in Fig. 9(a) . Therefore, in the comparative example, when the blurred pointer image 74 is overlapped on the pointer image 80, the brightness of the overlapping region G increases and the overlapping region G appears to emit light, which gives a sense of discomfort to the viewer.
In this regard, in the present embodiment, when the control unit 55 displays the blur pointer image 74 superimposed on the pointer image 80, as shown in Fig. 10(a), the control unit 55 reduces the brightness of the pointer image 80 in the overlapping region G, as shown in Fig. 10(b), while reducing the brightness of the blur pointer image 74 in the overlapping region G, as shown in Fig. 10(b). As a result, as shown in Fig. 10(c), the summed brightness in the overlapping region G becomes equivalent to the brightness of the pointer image 80 before the blur pointer image 74 is superimposed, as shown in Fig. 9(a). This equality includes a difference of ±3%. As a result, when the blur pointer image 74 is superimposed and displayed on the pointer image 80, the overlapping region G is prevented from appearing to emit light, and the viewer is prevented from feeling uncomfortable.
The ratio of the decrease in brightness of the blur pointer image 74 in the overlapping region G to the decrease in brightness of the pointer image 80 in the overlapping region G can be adjusted as appropriate.

(effect)
According to the third embodiment described above, the following effects are achieved.
(1) The blurred pointer image 74 is displayed so as to overlap with the pointer image 80. The brightness of the blurred pointer image 74 in the overlapping region G and the brightness of the pointer image 80 in the overlapping region G are set so that the brightness of the overlapping region G where the blurred pointer image 74 and the pointer image 80 overlap is equivalent to the brightness of the pointer image 80 before the blurred pointer image 74 is overlapped.
According to this configuration, when the blurred pointer image 74 overlaps with the pointer image 80, the overlapping region G is prevented from appearing to emit light.

Note that the present invention is not limited to the above-described embodiments and drawings. Modifications (including the deletion of components) can be made as appropriate within the scope of the present invention without changing the gist of the invention. An example of a modification is described below.

(Modification)
In each of the above embodiments, the blur pointer image 60 is displayed in the high speed region, but the blur pointer image 60 may be omitted.

In the second embodiment described above, the clockwise blur pointer image 73Cw and the counterclockwise blur pointer image 73Ucw were generated from one original blur image 173. However, this is not limited to the above, and two original blur images corresponding to the clockwise blur pointer image 73Cw and the counterclockwise blur pointer image 73Ucw, respectively, may be stored.

In each of the above embodiments, the counterclockwise side image portion 71c of the blur pointer image 71 may be omitted, and the clockwise side image portion 72b of the blur pointer image 72 may be omitted. In other words, it is sufficient that the travel direction image portion is displayed, and the trajectory direction image portion may be omitted.

In each of the above embodiments, the display device 10 displays an indicator showing the vehicle speed using an image, but it is not limited to vehicle speed, and may be an indicator showing engine RPM or remaining fuel. Also, multiple types of indicators may be displayed on one image. Furthermore, it is not limited to an indicator, and may be a display device in which a pointer, which is an example of an indicator, moves on the screen in response to a user's operation. In this case, a blurred image similar to the blurred indicator images 60, 71, 72, 73, 74 is displayed in response to the speed at which the pointer moves.

In each of the above embodiments, the control unit 55 may switch between the presence and absence of a blur effect based on the detection result of the gaze detection unit that detects the gaze direction of the driver (not shown). When the control unit 55 determines through the gaze detection unit that the driver's gaze direction is toward the liquid crystal panel 20, it displays the blur pointer images 60, 71, 72, 73, and 74 to perform a blur effect, and when the control unit 55 determines through the gaze detection unit that the driver's gaze direction is not toward the liquid crystal panel 20, it does not perform a blur effect by hiding the blur pointer images 60, 71, 72, 73, and 74. This reduces the number of unnecessary blur effects when the driver is not viewing the liquid crystal panel 20, and reduces the processing burden on the control unit 55.

In the above embodiment, the display unit was a liquid crystal panel 20, but it is not limited to a liquid crystal panel 20 and may also be an organic electro-luminescence display (OELD).

10 Display device 20 Liquid crystal panel 30 Light source 40 GDC
50 Microcomputer 51 CPU
52 ROM
53 RAM
55 Control unit 60, 71, 72, 73, 74 Blurred pointer image 80 Pointer image 71a, 72a, 73a, 173a Hollowed-out portion 71b, 72b, 73b Clockwise-side image portion 71c, 72c, 73c Counterclockwise-side image portion 173 Original blurred image G Overlapped region TH1, TH2 Threshold value Ib Background image Cw Clockwise direction Ucw Counterclockwise direction

Claims (5)

A display unit that displays an image including an indication unit;
a control unit that controls the display unit to move the indication unit within the image, and displays a blurred image including a traveling direction image portion located in a traveling direction of the indication unit when the moving speed of the indication unit is equal to or greater than a threshold value;
the blurred image includes, in addition to the travel direction image portion, a path direction image portion located in a path direction of a pointer image that is the indication portion,
the travel direction image portion and the trajectory direction image portion are in the form of a frame surrounding the indication portion,
the brightness of the travel direction image portion is set lower than the brightness of the trajectory direction image portion;
Display device. a cutout portion is formed in the blurred image by cutting out an area corresponding to the instruction portion so that the blurred image does not overlap the instruction portion;
The display device according to claim 1 . The blurred image is displayed so as to overlap with the indication portion,
a brightness of the blurred image in the overlapping region and a brightness of the indication portion in the overlapping region are set so that a brightness of the overlapping region where the blurred image and the indication portion overlap is equivalent to a brightness of the indication portion before the blurred image is overlapped;
The display device according to claim 1 . the display device includes a storage unit configured to store one original blurred image obtained by combining a clockwise side image portion and a counterclockwise side image portion located in a counterclockwise direction relative to the clockwise side image portion;
the control unit generates the blurred image by setting a brightness of the clockwise side image portion in the original blurred image lower than that of the counterclockwise side image portion when the pointer image, which is the indication unit, rotates in a clockwise direction, and generates the blurred image by setting a brightness of the counterclockwise side image portion in the original blurred image lower than that of the clockwise side image portion when the pointer image rotates in a counterclockwise direction.
The display device according to claim 1 . A display unit that displays an image including an indication unit;
a control unit that controls the display unit to move the indication unit within the image, and displays a blurred image including a traveling direction image portion located in a traveling direction of the indication unit when the moving speed of the indication unit is equal to or greater than a threshold value;
the control unit displays a first blurred pointer image, which is the blurred image, when the moving speed of the pointer image, which is the indication unit, is equal to or greater than a first threshold value, which is the threshold value, and displays a second blurred pointer image in a trajectory direction of the pointer image and at a position away from the pointer image, when the moving speed of the pointer image is equal to or greater than a second threshold value which is greater than the first threshold value.
Display device.

Images