JP2016224369A - Display control device and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a display control device that can suppress frequency of changes of a determined display area with consideration to an influence of an incidence light upon implementing a display using the determined display area.SOLUTION: A display area determination unit 13 is configured to predict a display area excellent in visibility for at least minimum unit time in a display screen of a display unit 32, using a route to a destination, an angle of incidence of incidence light to the display screen of the display unit 32 to be detected by an incidence light detection unit 41, and a view point position of a user to be detected by a view point position detection unit 42. Then, a display area determination unit 14 is configured to determine the display area to be used in the display for the minimum unit time from the display areas predicted to be excellent in visibility, and a display position control unit 15 is configured to control the display unit 32 so as to implement a display with respect to the determined display area.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display control apparatus that displays information in a display area having good visibility for a user in a display screen.

  When light enters a display screen on which various types of information are displayed and the reflected light enters the user's eyes, the visibility of the user with respect to the displayed information deteriorates. Therefore, in Patent Document 1, for a plurality of display areas on the display screen, visibility is ensured by selecting a display area to be used for display based on an incident angle of incident light and an angle of a user's eyes. doing.

JP 2011-13515 A

  However, when a display device having a display screen is installed in a moving body such as a vehicle, the state of incident light changes due to passing of a curve, turning right or left at an intersection, etc. during actual traveling. The area is also changed each time. In particular, when there are many curves or intersections to turn left and right on the travel route, since the display area is frequently changed, the visibility of the user may rather be impaired.

  The present invention has been made to solve the above-described problems, and suppresses the frequency with which a region is changed when display is performed using a display region determined in consideration of the influence of incident light. An object of the present invention is to obtain a display control device capable of performing the above.

  The display control apparatus according to the present invention moves using an assumed movement path of a moving body, an incident angle of incident light on a display screen of a display unit installed in the moving body, and a user's viewpoint position in the moving body. Display area determination for predicting a display area in a display screen in which the relationship between the incident angle of incident light on the display screen and the user's viewpoint position is within an allowable range while the body moves from the current position along the assumed movement path for a set time A display area determining unit for determining a display area to be used for display during a set time from the display areas predicted by the display area determining unit, and a display area for the display area determined by the display area determining unit And a display position control unit for displaying.

  According to the present invention, since the display area is determined in consideration of the relationship between the incident angle and the viewpoint position during the set time, display can be performed using a display area that is less affected by incident light. In addition, the display area can be prevented from changing frequently.

It is a figure which shows the structure of the display apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the hardware structural example of an arithmetic unit. It is a figure which shows the structural example of an incident light detection part. It is a flowchart which shows the process of the display apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the display area where the visibility which was estimated is not good, and the display area where the visibility is good. It is a figure which shows the structure of the display apparatus which concerns on Embodiment 2 of this invention. It is a figure which shows the structure of the display apparatus which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
FIG. 1 shows a configuration of a display device according to Embodiment 1 of the present invention. Hereinafter, a case where the display device is realized as the navigation device 100 will be described as an example.
The navigation device 100 is mounted in a moving body. Hereinafter, a case where the navigation device 100 is mounted in a vehicle will be described as an example. However, the navigation device 100 may be mounted on a railway vehicle, an aircraft, a ship, or the like.

  The navigation device 100 includes a calculation device 1 that realizes general navigation functions such as route search and display control functions, a storage device 2 that stores map data and the like used by the calculation device 1 for calculation, and a user operation that receives a user operation. It has a user interface 3 that provides information, and a sensor device 4 that detects the viewpoint position of the user and the incident angle of incident light.

The computing device 1 includes a host vehicle position detection unit 11, a route search unit 12, a display area determination unit 13, a display area determination unit 14, and a display position control unit 15.
The own vehicle position detection unit 11 uses a radio wave received from a GPS (Global Positioning System) satellite, and output signals of various sensors such as an acceleration sensor and a gyro sensor (not shown) at the current position of the vehicle on which the navigation device 100 is mounted. A certain vehicle position is detected. The detected vehicle position is output to the route search unit 12.
The route search unit 12 is set from the current position according to a well-known program for route search, using the map data stored in the storage device 2 and the vehicle position detected by the vehicle position detection unit 11. Route search to the desired destination. The route calculated by the route search unit 12 is an assumed movement route that the vehicle is supposed to travel thereafter, and is output to the display area determination unit 13. Further, the route search unit 12 creates an image in which the route to the destination and the vehicle position are superimposed on the map, and outputs the image to the display unit 32 of the user interface 3.

The display area determination unit 13 uses the route to the destination calculated by the route search unit 12, the viewpoint position of the user and the incident angle of incident light input from the sensor device 4, to the calculated destination. A display area with good visibility is predicted in the display screen of the display unit 32 of the user interface 3 for the period from the current position to the minimum unit time along the route. The display area predicted to have good visibility during the minimum unit time is output to the display area determination unit 14.
The minimum unit time is a set time indicating the minimum time when the display position of an image or the like should not be changed so as not to reduce the visibility of the user. For example, the minimum unit time may be set to about 1 to 5 minutes. .

The display area determination unit 14 determines a display area to be used for display during the minimum unit time from the display areas predicted to have good visibility by the display area determination unit 13. The determined display area is output to the display position control unit 15.
The display position control unit 15 controls the display unit 32 of the user interface 3 so that information such as an image is displayed on the display region determined by the display region determination unit 13 during the minimum unit time.
The display area determination unit 13, the display area determination unit 14, and the display position control unit 15 constitute the display control device 10.

  The functions of the vehicle position detection unit 11, the route search unit 12, the display area determination unit 13, the display area determination unit 14, and the display position control unit 15 of the arithmetic device 1 are realized by a processing circuit. The processing circuit may be dedicated hardware or a CPU (Central Processing Unit) that executes a program stored in a memory. The CPU is also called a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, and a DSP (Digital Signal Processor).

  FIG. 2A is a diagram illustrating a hardware configuration example in a case where the functions of the respective units of the arithmetic device 1 are realized by the processing circuit 200 that is dedicated hardware. The processing circuit 200 corresponds to, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a combination thereof. . The functions of the vehicle position detection unit 11, the route search unit 12, the display region determination unit 13, the display region determination unit 14, and the display position control unit 15 may be realized by combining separate processing circuits 200. These functions may be realized by one processing circuit 200.

  FIG. 2B is a diagram illustrating a hardware configuration example when the functions of the respective units of the arithmetic device 1 are realized by the CPU 202 that executes a program stored in the memory 201. In this case, the functions of the vehicle position detection unit 11, the route search unit 12, the display area determination unit 13, the display area determination unit 14, and the display position control unit 15 are based on software, firmware, or a combination of software and firmware. Realized. Software and firmware are described as programs and stored in the memory 201. The CPU 202 implements the functions of the respective units of the arithmetic device 1 by reading and executing the program stored in the memory 201. That is, the arithmetic device 1 has a memory 201 for storing a program in which steps ST1 to ST9 shown in the flowchart of FIG. These programs can also be said to cause a computer to execute the procedure or method of each part of the computing device 1. Here, the memory 201 is, for example, a nonvolatile or volatile semiconductor memory such as a RAM, a ROM, a flash memory, an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a magnetic disk, a flexible disk, an optical disk, A compact disc, a mini disc, a DVD (Digital Versatile Disc), and the like are applicable.

  In addition, about the function of each part of the arithmetic unit 1, a part may be implement | achieved by exclusive hardware and a part may be implement | achieved by software or firmware. For example, the function of the vehicle position detection unit 11 is realized by a processing circuit as dedicated hardware, and the route search unit 12, the display area determination unit 13, the display area determination unit 14, and the display position control unit 15 are processed. The function can be realized by the circuit reading and executing the program stored in the memory.

  As described above, the processing circuit can realize each function of the arithmetic device 1 by hardware, software, firmware, or a combination thereof.

  The user interface 3 includes an information input unit 31 configured to include a touch panel, a remote controller, and the like and accepting a user operation such as destination setting, and a display unit 32 that displays an image indicating information such as a map and a vehicle position. The display unit 32 is a liquid crystal monitor, for example, and has a display screen. The display position control unit 15 controls which display area in the display screen displays information such as an image. The information input unit 31 outputs the contents of the received user operation to the route search unit 12.

The sensor device 4 includes an incident light detection unit 41 that detects an incident angle of incident light on the display screen of the display unit 32, and a viewpoint position detection unit 42 that detects the viewpoint position of the user in the vehicle. The light incident on the display screen of the display unit 32 is mainly sunlight, and can be understood as parallel light in which the light source is located at infinity. The detected incident angle of the incident light and the viewpoint position of the user are output to the display area determination unit 13.
The incident light detection unit 41 includes, for example, an illuminance sensor module 411 provided in the display unit 32 as shown in FIG. The illuminance sensor module 411 includes a plurality of illuminance sensors 411b provided in the vicinity of the display screen A of the display unit 32 and placed in a plurality of tubes 411a having different installation angles with respect to the display screen A. When the illuminance sensor 411b detects an illuminance greater than or equal to the threshold value, the installation angle of the tube 411a on which the illuminance sensor 411b is placed with respect to the display screen A is detected as the incident angle of incident light on the display screen A.

Alternatively, as shown in FIG. 3B as a bird's-eye view of the vehicle, the incident angle of incident light may be detected by providing illuminance sensors 412 at various locations on the vehicle body instead of the display unit 32. In this case, the fact that the illuminance detected by the illuminance sensor 412 installed in the direction of the incident light among the illuminance sensors 412 becomes high is used.
Alternatively, the incident light detection unit 41 acquires the own vehicle position detected by the own vehicle position detection unit 11, and uses the separately prepared astronomical data of the sun position to geometrically represent the sun position viewed from the own vehicle position. Thus, the incident angle of the incident light may be calculated. In this case, the vehicle position detection unit 11 is configured by a processor or the like that executes a calculation program.

  The angle of the display screen of the display unit 32 with respect to the vehicle body can be known by various known methods, and as described above, sunlight is regarded as parallel light. Therefore, if the incident angle with respect to the vehicle body of the incident light as sunlight obtained by calculation using the illuminance sensor 412 provided on the vehicle body or astronomical data is known, the incident angle of the incident light on the display screen is calculated using the incident angle. The incident angle can be calculated.

  The viewpoint position detection unit 42 is configured by a camera or the like, for example. The user is photographed with a camera, the position of the user's eyes is detected by well-known image recognition, and the viewpoint position of the user is calculated as a point on the three-dimensional coordinate based on the installation position of the camera on the three-dimensional coordinate. The three-dimensional coordinates are defined with an arbitrary point in the vehicle as an origin, for example. Further, the three-dimensional coordinates of each point on the display screen of the display unit 32 are known, for example, by being preset, and the display screen of the display unit 32 is calculated by calculating the three-dimensional coordinates of the viewpoint position. The positional relationship between each point above and the viewpoint position can be calculated.

Next, an example of processing performed by the navigation device 100 configured as described above will be described with reference to the flowchart shown in FIG.
When the engine of the vehicle is turned on and the user sets a destination via the information input unit 31, the route search unit 12 is input from the map data stored in the storage device 2 and the vehicle position detection unit 11. A route search from the current position to the set destination is performed using the own vehicle position. The calculated route is output to the display area determination unit 13. Here, it is assumed that the route search process has already been completed as an initial state for entering the process of the flowchart of FIG.
Further, the route search unit 12 creates an image in which the route to the destination and the vehicle position are superimposed on the map, and outputs the image to the display unit 32 of the user interface 3. The display area determination unit 13 receives an incident angle of incident light from the incident light detection unit 41 and a user's viewpoint position from the viewpoint position detection unit 42. The image creation processing by the route search unit 12 and the detection processing by the own vehicle position detection unit 11, the incident light detection unit 41, and the viewpoint position detection unit 42 are always performed in parallel with each step described later.

  The display area determination unit 13 uses the route from the current position calculated by the route search unit 12 to the destination to calculate the direction of the vehicle at each point on the route traveled until the minimum unit time has elapsed ( Step ST1). The direction of the vehicle refers to the direction in which the vehicle body is directed, and changes when there is a curve, a right / left turn at an intersection, or the like on the route. The vehicle position when the minimum unit time has elapsed is predicted using the vehicle speed detected by a vehicle speed sensor (not shown) or the road speed limit stored as part of the map data in the storage device 2.

Subsequently, the display area determination unit 13 determines whether a change in the vehicle orientation that is equal to or greater than the first threshold occurs before the minimum unit time elapses with reference to the vehicle orientation at the current position (step ST2).
If the change in the direction of the vehicle beyond the first threshold does not occur (eg, step ST2; NO), such as when the route that is expected to pass before the minimum unit time elapses is substantially linear, step ST4 described later is performed. Move on to processing.
On the other hand, when there is a change in the direction of the vehicle that is greater than or equal to the first threshold, such as when there is a curve or a right or left turn at an intersection on a route that is expected to pass by the minimum unit time (step ST2; YES) The display area determination unit 13 uses the incident angle of the current incident light output from the incident light detection unit 41 and the vehicle orientation at each point calculated in step ST1 to the display screen of the display unit 32. The incident angle of the incident light is predicted for each point traveled until the minimum unit time elapses (step ST3).

Subsequently, the display area determination unit 13 uses the current viewpoint position of the user output from the viewpoint position detection unit 42 and the incident angle of incident light on the display screen of the display unit 32 for a minimum unit time. Thus, a display area with good user visibility is predicted in the display screen of the display unit 32 (step ST4). Incident light incident on the display screen of the display unit 32 is reflected at each point on the display screen at the same reflection angle as the incident angle, and becomes reflected light. The display area determination unit 13 predicts, from among the points on the display screen, a set of points that cause reflected light near the user's viewpoint as a display area with poor user visibility, and sets other areas as the display area. Predicted as a display area with good visibility. The vicinity of the user's viewpoint indicates a range where the influence of the reflected light of the incident light on the user's visibility exceeds the allowable range. Thereby, for example, as shown in FIG. 5, a display area B with poor visibility and a display area C with good visibility are predicted in the display screen A of the display unit 32. The prediction result is output to the display area determination unit 14.
When the process of step ST4 is performed following step ST3, the incident light incident angle at each point predicted in step ST3 is used, and when the process is performed subsequent to step ST2, the incident light detection unit. This is performed using the incident angle of the current incident light output by 41.

Subsequently, the display area determination unit 14 determines a display area to be used for display during the minimum unit time from the display areas predicted by the display area determination unit 13 that the user's visibility is good during the minimum unit time. (Step ST5).
As shown in FIG. 5, when there are a plurality of areas such as the display areas C1 and C2 as the display area C with good visibility, for example, the area having the maximum area size is selected and used as the display area for display. decide. The determined display area is output to the display position control unit 15.

  Subsequently, the display position control unit 15 controls the display unit 32 so as to display information such as an image on the display region determined by the display region determination unit 14 (step ST6). Thereby, an image or the like in which the route to the destination and the vehicle position are superimposed on the map created by the route search unit 12 and output to the display unit 32 is displayed on the display screen of the display unit 32. 14 is displayed in the determined display area, and the display position of the information is controlled.

  Subsequently, while display is being performed using the display area determined by the display area determination unit 14, the display area determination unit 13 uses the current viewpoint position of the user output from the viewpoint position detection unit 42. Then, the change amount of the user's viewpoint position is calculated, and it is determined whether the change amount is equal to or greater than the second threshold (step ST7). This amount of change is the amount of change from the viewpoint position of the user used in step ST4, and occurs when the user changes his / her posture.

  When the change amount of the user's viewpoint position is equal to or greater than the second threshold (step ST7; YES), the display area determination unit 13 performs the process of step ST4 again. At this time, if the display area used for display at that time is determined using the predicted value of the incident angle of incident light in step ST3, the incident light predicted in step ST3. The process of step ST4 is performed using the incident angle. For this reason, if the display area determination part 13 estimates the incident angle of incident light by step ST3, it will memorize | store the predicted value in the memory | storage device 2, for example. Further, when the display area used for display at that time is not determined using the predicted value of the incident angle of incident light in step ST3, the current incident output from the incident light detector 41 is output. The process of step ST4 is performed using the incident angle of light.

  On the other hand, when the amount of change in the viewpoint position of the user is less than the second threshold (step ST7; NO), the display area determination unit 13 continues the incident angle of the incident light at the present time output from the incident light detection unit 41. Then, it is determined whether the difference between the incident angle of the incident light predicted at step ST3 and the incident angle at the point corresponding to the current position is greater than or equal to the third threshold (step ST8). If the incident angle of the incident light is not predicted, it is determined in step ST8 that the difference in incident angle is less than the third threshold value, and the process proceeds to step ST9 described later.

When the difference between the predicted incident angle and the current actual incident angle is equal to or greater than the third threshold (step ST8; YES), the display area determination unit 13 performs the process of step ST3 again.
On the other hand, when the difference between the predicted incident angle and the actual incident angle at the present time is less than the third threshold (step ST8; NO), the display area determination unit 13 starts the process of step ST1. It is determined whether or not a predetermined time set from elapses (step ST9). This fixed time is set to be shorter than the minimum unit time, and is a time that is reached before the minimum unit time elapses after the processing of step ST1 is started.

When the predetermined time has not elapsed (step ST9; NO), the display area determination unit 13 performs the process of step ST7 again.
On the other hand, when a fixed time has elapsed (step ST9; YES), a series of processes from step ST1 is repeated again. The display area determined in step ST5 is effective as a display area having good visibility only during the minimum unit time after the process of step ST1 is started. For this reason, a display area with good visibility can be continuously set by predicting and calculating a display area with good visibility in the next minimum unit time in advance.

  As described above, according to the display device according to the first embodiment, the display region determination unit 13 detects the path to the destination, the incident angle of the incident light detected by the incident light detection unit 41, and the viewpoint position detection. Using the user's viewpoint position detected by the unit 42, a display area with good visibility is predicted on the display screen of the display unit 32 for at least the minimum unit time. Then, the display area determination unit 14 determines a display area used for display during the minimum unit time from the display areas predicted to have good visibility, and the display position control unit 15 determines the display area thus determined. The display unit 32 is controlled so as to display. Thus, by predicting and using a display area with good visibility, display can be performed using a display area that is less affected by incident light, and the display area is frequently changed. It can be done without.

Embodiment 2. FIG.
In the first embodiment, the mode of predicting a display region with good visibility has been described based on the assumption that the route to the destination calculated by the route search unit 12 is traveled. In the second embodiment, a mode in which a display area with good visibility is predicted when the user travels on a road without setting a destination, such as a road with high travel frequency, will be described.
FIG. 6 shows a configuration of navigation device 101 which is a display device according to Embodiment 2 of the present invention. The navigation device 101 is obtained by adding a route learning unit 16 and a user determination unit 43 to the navigation device 100 described in the first embodiment.

The user determination unit 43 provided in the sensor device 4 determines a user who drives the vehicle. The user determination unit 43 is configured by a known technique such as a configuration for determining who the user is by recognizing an image captured by a camera or the like.
The route learning unit 16 provided in the arithmetic device 1 uses the own vehicle position detected by the own vehicle position detection unit 11 and the map data stored in the storage device 2 as a route data in the storage device 2. Remember. At this time, the route learning unit 16 causes the storage device 2 to accumulate route data for each user using the result of the user determination by the user determination unit 43. By storing the route data in this way every time the vehicle travels, a route having a high traveling frequency is clarified for each user. The computing device 1 having the path learning unit 16 also implements each function by hardware, software, firmware, or a combination thereof, as described in the first embodiment.

When the route from the route search unit 12 to the destination is not input, that is, when the user does not set the destination, the display area determination unit 13 uses the result of the user determination by the user determination unit 43 to store in the storage device 2. The route data of the user determined by the user determination unit 43 is acquired from the route data stored for each user.
And the display area determination part 13 extracts the path | route including the own vehicle position which the own vehicle position detection part 11 detected from the acquired user's route data. The own vehicle position can be acquired via the route search unit 12. When there are a plurality of routes including the vehicle position, a route with a high traveling frequency is extracted. The extracted route is an assumed movement route that the vehicle is expected to travel thereafter. Then, the display area determination unit 13 predicts a display area with good visibility during the minimum unit time under the assumption that the vehicle travels on the extracted route.

The display area determination unit 14 determines a display area to be used for display during the minimum unit time from the display areas predicted to have good visibility by the display area determination unit 13.
The display position control unit 15 controls the display unit 32 to display the display area determined by the display area determination unit 14 during the minimum unit time.
That is, in the second embodiment, each process performed using the route calculated by the route search unit 12 in the first embodiment is performed using the route extracted from the storage device 2. In addition, the route search part 12 outputs the image which superimposed the own vehicle position on the map to the display part 32, for example.

  As described above, according to the display device according to the second embodiment, the display area determination unit 13 displays the result of user determination by the user determination unit 43 and the vehicle position detected by the vehicle position detection unit 11. Using the route data stored in the storage device 2, the route on which the vehicle is supposed to travel is acquired. Then, the display area determination unit 13 uses the path, the incident light incident angle detected by the incident light detection unit 41, and the user viewpoint position detected by the viewpoint position detection unit 42 to display the display unit 32. A display area with good visibility is predicted for at least the minimum unit time on the screen. Then, the display area determination unit 14 determines a display area used for display during the minimum unit time from the display areas predicted to have good visibility, and the display position control unit 15 determines the display area thus determined. The display unit 32 is controlled so as to display. A route with high travel frequency often travels without setting a destination, but according to the second embodiment, the same effect as in the first embodiment can be obtained even in such a case.

Embodiment 3 FIG.
In the first embodiment, display is performed using the display unit 32 provided in the navigation device 100. In the third embodiment, a case will be described in which display is also performed using the external display terminal 5 provided outside the navigation device 102.
FIG. 7 shows the configuration of navigation device 102 which is a display device according to Embodiment 3 of the present invention. The navigation device 102 is obtained by adding an external output unit 17 to the navigation device 100 shown in the first embodiment.

  Further, the external display terminal 5 is connected to the navigation device 102 by wire or wirelessly. The external display terminal 5 is a portable display terminal such as a tablet provided at a different location and a different screen angle from the display unit 32.

The external output unit 17 provided as a part of the display control device 10 in the arithmetic device 1 displays the display used for display during the minimum unit time from the display region determination unit 14 that has performed the processing of step ST5 shown in FIG. An area determination result is input. The external output unit 17 receives information such as the same image that the route search unit 12 outputs to the display unit 32.
When the display area determination unit 14 that has received the prediction result of the display area with good user visibility during the minimum unit time from the display area determination unit 13 cannot determine the display area to be used for display, the external output unit 17 Information such as an image input from the search unit 12 is displayed on the external display terminal 5 for a minimum unit time. For example, when the display area determination unit 13 predicts that there is no display area with good user visibility during the minimum unit time, the display area determination unit 14 cannot determine the display area used for display.
The computing device 1 having the external output unit 17 also realizes each function by hardware, software, firmware, or a combination thereof, as described in the first embodiment.

When the direction of the vehicle changes in multiple directions during the minimum unit time, there is a possibility that a display area with good visibility does not exist on the display screen of the display unit 32. On the other hand, the external display terminal 5 is provided at a place different from the display unit 32 and at a different screen angle. Therefore, by displaying the information to be displayed on the display unit 32 using the external display terminal 5, there is a possibility that a display with good visibility can be performed.
In many cases, the display unit 32 of the navigation device 102 has a fixed position and screen angle. On the other hand, if the external display terminal 5 is a tablet or the like, the user can freely change the position and the screen angle, so that the visibility can be secured manually.

  As described above, according to the display device according to the third embodiment, when the display area determination unit 14 cannot determine a display area with good visibility used for display during the minimum unit time, the external output unit 17. Displays information on the external display terminal 5. Thereby, even when the display unit 32 cannot ensure visibility, a display with good visibility can be provided to the user.

  In addition, when the external display terminal 5 is fixed in the vehicle, the display area determination unit 13 displays on the external display terminal 5 with good user visibility during the minimum unit time as in the display unit 32. The area may be predicted, and the display area determination unit 14 may determine the display area used for display and output the display area to the external output unit 17. By doing in this way, you may control the external display terminal 5 so that the external output part 17 may perform a display with respect to the display area | region considered that visibility was good.

Embodiment 4 FIG.
In the first embodiment, for example, the display area determining unit 14 determines the area having the largest area size among the display areas predicted to have good visibility as the display area used for display. In the fourth embodiment, a case where a lower limit is provided for the area size of the display region used for display will be described.
The navigation device 100 that is a display device according to Embodiment 4 has the same configuration as the navigation device 100 shown in FIG.

The display area determining unit 14 determines that the display area having the largest area size is the fourth threshold value among the display areas predicted by the display area determining unit 13 that the user's visibility is good during the minimum unit time. It is determined whether it is above. Only when it is equal to or greater than the fourth threshold value, it is determined as a display area to be used for display, and is output to the display position control unit 15.
If it is less than the fourth threshold, it is not affected by incident light, but it is a display area with a small area size, and even if it is used for display, it is difficult to see for the user. In this case, the display may be performed using the external display terminal 5 configured as in the third embodiment, or the display area used at that time may be used as it is.

  Note that the display area determination unit 14 may determine the display area by setting lower limits on not only the area size but also the size of the display area such as the vertical width and the horizontal width. For example, even if an image or the like created by the route search unit 12 is displayed in a horizontally long display area having an extremely narrow vertical width, the display is difficult to see. Therefore, such a display area is not determined by the display area determination unit 14.

  As described above, according to the display device according to the fourth embodiment, by providing a lower limit on the size of the display area used for display, it is possible to display in a size that is easy for the user to see.

Embodiment 5. FIG.
In the first embodiment, a display area with good visibility is predicted for the entire display screen of the display unit 32. In the fifth embodiment, a case in which a display area with good visibility is predicted for a part of the display screen of the display unit 32 will be described.
A navigation device 100 that is a display device according to Embodiment 5 has the same configuration as the navigation device 100 shown in FIG.

The user uses the information input unit 31 to set a range that is desirably used for display in the display screen of the display unit 32. For example, when the user is a driver, a range close to the driver's seat side is set on the display screen of the display unit 32. The range set by the user is input to the display area determination unit 13 via the route search unit 12.
The display area determination unit 13 predicts a display area with good visibility during the minimum unit time within the range set by the user in the display screen of the display unit 32 and outputs the predicted display area to the display area determination unit 14.

When a display area with good visibility is predicted for the entire display screen of the display unit 32, for example, when the display unit 32 has a large display screen, display may be performed using a display area far from the user. is there. In view of this, the user sets a target range for predicting a display area with high visibility so that such inconvenience does not occur.
In addition, since the display area used for the display finally determined by the display area determining unit 14 is also narrowed down to the range set by the user, the user can easily grasp where the information is displayed in a short time. .
Moreover, the calculation load of the computing device 1 is reduced by narrowing down the target range for predicting the display area with good visibility.

  As described above, according to the display device according to the fifth embodiment, the range of the target for predicting the display area with good visibility is set in advance, so that the influence of incident light is small, and for the user. Display at an easy-to-view position is possible.

Embodiment 6 FIG.
In the first embodiment, a display region with good visibility is predicted based on the minimum unit time. In the sixth embodiment, a case will be described in which a display region with good visibility is predicted based on a unit time longer than the minimum unit time.
A navigation device 100 that is a display device according to Embodiment 5 has the same configuration as the navigation device 100 shown in FIG.

The display area determination unit 13 predicts a display area with good user visibility for each of a plurality of unit times having different lengths. The plurality of unit times are all set times indicating a time longer than the minimum unit time.
Then, the display area determination unit 14 determines a display area to be used for display based on the size of the display area and the corresponding unit time for a display area with good visibility predicted every plural unit times. . For example, when it is desired to perform display using the same display area for a longer time, the display area determination unit 14 first selects a display area that is larger than the set size from among the display areas that are predicted to have good visibility. Each of the display areas selected in this way is a display area predicted using any unit time. The display area determination unit 14 determines the display area predicted using the longest unit time among the selected display areas as the display area used for display during the unit time, and displays it in the display position control unit 15. Output. The display position control unit 15 controls the display unit 32 of the user interface 3 so as to display information such as an image on the display region determined by the display region determination unit 13 during the unit time. Thereby, the display using the same display area can be performed for a longer time.

  In addition, the display area determination part 14 is the same for a long time based on the position on the display screen of these display areas and the corresponding unit time with respect to the display area with good visibility predicted every plural unit times. The display area used for display may be determined so that display is performed using the display area. In this case, the display area determination unit 14 selects a display area within a preset range from the display areas with good visibility predicted for each of the plurality of unit times. The display area corresponding to the longest unit time is determined as the display area used for display during the unit time.

  In addition, when there is no display area with good user visibility during a plurality of unit times longer than the minimum unit time, the display area determination unit 13 selects a display area with high user visibility during the minimum unit time. Predict again.

  As described above, according to the display device according to the sixth embodiment, the display area is determined in consideration of the size, the position, and the time, and particularly the time is emphasized. It is possible to perform display using the display area.

  In the above description, the case where the display device according to the present invention is realized as a navigation device has been described as an example. However, for example, the display device may be realized as display audio.

  Further, the display area determination unit 13 changes the incident angle of the incident light on the display screen during the set time to the display screen detected at the moving body orientation calculated from the assumed movement path and the current position of the moving body. And the incident angle of the incident light. Therefore, even when there is a curve, a right or left turn at an intersection on the assumed movement route, a display area with good visibility can be appropriately predicted.

  Further, the assumed movement route is a route from the current position of the moving body to the set destination or a route where the moving body has moved from the current position to the past. Therefore, even when the destination is not set, a display area with good visibility can be predicted along a route that is likely to move in the future.

  In addition, the external output unit 17 that displays information on the external display terminal 5 is provided, and the external output unit 17 displays the information on the display unit 32 when the display region determination unit 14 cannot determine the display region used for display in the display screen. The information that was the target to be displayed is displayed on the external display terminal 5. Therefore, even when the display unit 32 cannot ensure the visibility, the external display terminal 5 may be used to provide a display with good visibility to the user.

  Further, the display area determination unit 14 determines a display area having a size equal to or larger than the threshold as a display area used for display. Therefore, it is possible to display in a size that is easy for the user to see.

  In addition, the display area determination unit 13 predicts a display area within an allowable range for a preset range in the display screen. Therefore, it is possible to display at a position easy for the user to see.

  In addition, the display area determination unit 13 predicts a display area within the allowable range for each of a plurality of set times having different lengths, and the display area determination unit 14 includes a value within the allowable range predicted for each of the plurality of set times. The display area used for display is determined in consideration of the size or position of the display area and the corresponding set time. Therefore, it is possible to perform display using the same display area with good visibility for a longer time.

  Further, within the scope of the present invention, the invention of the present application can be freely combined with each embodiment, modified with any component in each embodiment, or omitted with any component in each embodiment. .

  DESCRIPTION OF SYMBOLS 1 Computation device, 2 Storage device, 3 User interface, 4 Sensor device, 5 External display terminal, 10 Display control device, 11 Own vehicle position detection part, 12 Route search part, 13 Display area determination part, 14 Display area determination part, DESCRIPTION OF SYMBOLS 15 Display position control part, 16 Path | route learning part, 17 External output part, 31 Information input part, 32 Display part, 41 Incident light detection part, 42 View point position detection part, 43 User determination part, 100 Navigation apparatus, 101 Navigation apparatus, 102 navigation device, 200 processing circuit, 201 memory, 202 CPU, 411 illumination sensor module, 411a tube, 411b illumination sensor, 412 illumination sensor.

Claims (8)

Using the assumed movement path of the moving body, the incident angle of the incident light on the display screen of the display unit installed in the moving body, and the viewpoint position of the user in the moving body, the moving body is moved from the current position to the current position. A display area determination unit that predicts a display area in the display screen in which the relationship between the incident angle of incident light on the display screen and the viewpoint position of the user is within an allowable range while moving on an assumed movement path for a set time;
A display area determining unit for determining a display area to be used for display during the set time from the display areas predicted by the display area determining unit;
A display control apparatus comprising: a display position control unit that causes the display unit to display a display region determined by the display region determination unit.   The display area determination unit detects an incident angle of incident light on the display screen during the set time in the direction of the moving object calculated from the assumed moving path and the current position of the moving object. The display control apparatus according to claim 1, wherein prediction is performed using an incident angle of incident light on the display screen.   The said assumed movement path | route is a path | route from the present position of the said mobile body to the set destination, or the path | route which the said mobile body moved to the past from the current position. 2. The display control device according to 2. It has an external output unit that displays information on an external display terminal.
The external output unit causes the external display terminal to display information to be displayed on the display unit when the display region determination unit cannot determine a display region used for display in the display screen. The display control apparatus according to any one of claims 1 to 3.   The display control apparatus according to claim 1, wherein the display area determination unit determines a display area having a size equal to or larger than a threshold value as a display area used for display.   The display area determination unit predicts a display area within the allowable range for a range set in advance on the display screen. 6. The display control device according to item. The display area determination unit predicts a display area within the allowable range for each of the plurality of set times having different lengths,
The display area determining unit determines a display area to be used for display in consideration of the size or position of the display area within the allowable range predicted for each of the plurality of set times and the corresponding set time. The display control device according to claim 1, wherein the display control device is a display control device.   A display device comprising the display control device according to claim 1.

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