Display device, control device, and control method

Abstract

An operation on the display surface of a multi-view display device is detected using a method different from conventional methods. A display device (1) capable of presenting a first image (IMG1) to a first user (U1) positioned on a first side of a display surface (110) and a second image (IMG2) different from the first image (IMG1) to a second user (U2) positioned on a second side different from the first side has a distance sensor (SR) that detects the distance between an object and each of a plurality of areas belonging to the display surface (110). Based on the distance detected by the distance sensor (SR), the display device (1) determines whether an operation on the display surface (110) by the object is being performed from the first side or the second side.

Description

[Technical Field]

[0001] One aspect of the present disclosure relates to a display device. [Background technology]

[0002] A display device that can present multiple individual images corresponding to the viewing direction of a user (viewer) on a single display surface is called a multi-view display device. Patent Document 1 listed below discloses an example of the configuration of a multi-view display device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-257446 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of one aspect of the present disclosure is to detect an operation on a display surface of a multi-view display device using a method different from conventional methods. [Means for solving the problem]

[0005] A display device according to one embodiment of the present disclosure is a display device that is capable of presenting a first image to a first user located on a first side of a display surface, and presenting a second image different from the first image to a second user located on a second side different from the first side, and has a distance sensor that detects the distance between each of a plurality of partial areas belonging to the display surface and an object, and the display device determines whether the object is operating the display surface from the first side or the second side based on the distance detected by the distance sensor.

[0006] A control device according to one embodiment of the present disclosure is a control device that controls a display device that can present a first image to a first user located on a first side of a display surface and a second image different from the first image to a second user located on a second side different from the first side, and the control device acquires the distance between an object and each of a plurality of partial areas belonging to the display surface from a distance sensor that detects the distance, and determines, based on the distance, whether the object is operating the display surface from the first side or the second side.

[0007] A control method according to one embodiment of the present disclosure is a control method for controlling a display device that is capable of presenting a first image to a first user located on a first side of a display surface, and presenting a second image different from the first image to a second user located on a second side different from the first side, and includes the steps of: acquiring the distance between an object and each of a plurality of partial areas belonging to the display surface from a distance sensor that detects the distance; and determining, based on the distance, whether the object is operating the display surface from the first side or the second side. [Effects of the Invention]

[0008] According to one aspect of the present disclosure, an operation on a display surface of a multi-view display device can be detected using a method different from conventional methods. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a block diagram showing an example of the configuration of a display device according to a first embodiment. [Figure 2] 2 is a schematic diagram illustrating dual view display in the display device of the first embodiment. [Figure 3] 1 shows an overview of the display surface of a display device. [Figure 4] 10 shows various examples of distance sensor placement. [Figure 5] FIG. 1 is a diagram illustrating a multi-zone sensor in 4×4 mode. [Figure 6] FIG. 10 is a diagram illustrating a multi-zone sensor in 8×8 mode. [Figure 7] 10 shows an example of a block formed by a plurality of partial regions in a multi-zone sensor. [Figure 8] An example will be shown in which the display surface and the object are not in close proximity in either the first or second block. [Figure 9] The first block shows an example in which the display surface and the object are in close proximity to each other. [Figure 10] The second block shows an example in which the display surface and the object are in close proximity to each other. [Figure 11] FIG. 10 is a block diagram showing an example of the configuration of a display device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Embodiment 1] The first embodiment will be described below. For ease of explanation, components having the same functions as those described in the first embodiment will be denoted by the same reference numerals in the following embodiments, and the description thereof will not be repeated. For simplicity, the description of matters similar to those in the publicly known technology will also be omitted as appropriate.

[0011] Unless otherwise specified, all components and numerical values ​​described in this specification are merely examples. Therefore, unless otherwise specified, the positional relationship and connection relationship of each component are not limited to the examples in the drawings.

[0012] (Configuration example of display device 1) 1 is a block diagram showing an example configuration of a display device 1 according to a first embodiment. The display device 1 includes a display unit 10 and a control unit 20. The control unit 20 comprehensively controls each component of the display device 1. The control unit 20 functions as a display control device that controls the display on the display unit 10. Therefore, the control unit 20 is an example of a control device according to one aspect of the present disclosure.

[0013] The display unit 10 includes a display panel 11. The control unit 20 includes a display control unit 21. The display control unit 21 controls the display unit 10. In the first embodiment, the display panel 11 is a liquid crystal panel. In this case, the display control unit 21 may control the display panel 11. The display control unit 21 may also control a light source (e.g., a backlight) of the display unit 10 (not shown).

[0014] The display device 1 includes a distance sensor SR. Fig. 1 illustrates a configuration in which the distance sensor SR is built into the display unit 10. The control unit 20 includes a proximity determination unit 22. The proximity determination unit 22 acquires the detection result of the distance sensor SR and performs proximity determination, which will be described later.

[0015] The display device 1 in the first embodiment is a multi-view display device. For the sake of clarity, the first embodiment illustrates a case where the display device 1 is a dual-view display device. Therefore, the display device 1 is configured to be able to present two separate images (capable of dual-view display) depending on the viewing direction of the user.

[0016] In this specification, one of the two separate images in a dual-view display is referred to as a first image, and the other is referred to as a second image. In the example of embodiment 1, the second image is an image different from the first image.

[0017] Fig. 2 schematically illustrates dual view display on the display device 1. In Fig. 2, two users are illustrated as viewers of an image displayed on the display device 1. In this specification, one of the two users is referred to as a first user U1, and the other is referred to as a second user U2.

[0018] In this specification, it is assumed that a first user U1 is located at a first position relative to the display surface 110 of the display device 1. On the other hand, it is assumed that a second user U2 is located at a second position relative to the display surface. In the example of the first embodiment, it is assumed that the second position is a position different from the first position.

[0019] 2, the side where the first user U1 is positioned relative to the display surface 110 is referred to as the first side. On the other hand, the side where the second user U2 is positioned relative to the display surface 110 is referred to as the second side. Therefore, the second side is a side different from the first side.

[0020] In the example of FIG. 2, the first side is the left side relative to the display surface 110. Meanwhile, the second side is the right side relative to the display surface 110. Therefore, the second side in the example of FIG. 2 is the side opposite to the first side. In the example of FIG. 2, the first image IMG1 is the image presented to the first user U1. Meanwhile, the second image IMG is the image presented to the second user U2.

[0021] As an example, the display device 1 is mounted on a vehicle (e.g., an automobile). An example of the first user U1 is a user sitting in the driver's seat of the automobile. Therefore, for example, the first image IMG1 may be a content image that provides information for driving (e.g., an image displayed by a car navigation system).

[0022] On the other hand, an example of the second user U2 is a user sitting in a passenger seat in a car. Therefore, for example, the second image IMG2 may be a content image (e.g., an image showing the air conditioning status inside the car) different from the first image IMG1.

[0023] Referring again to FIG. 1, the display device 1 includes an input device 30. The input device 30 is not particularly limited as long as it can accept operations by each user on the display surface 110. In the example of the first embodiment, it is assumed that the first user U1 and the second user U2 can each perform operations on the display surface 110 through the input device 30. The control unit 20 controls the display unit 10 in accordance with the operations.

[0024] In the first embodiment, the input device 30 is arranged so that (i) a first user U1 can operate the input device 30 from a first side, and (ii) a second user U2 can operate the input device 30 from a second side. Therefore, the input device 30 in the example of the first embodiment is arranged near the display surface 110.

[0025] FIG. 3 shows an overview of the display surface 110. The display surface 110 has an active area AR1 and a frame area AR2. As shown in FIG. 3, the frame area AR2 is located on the outer edge of the display surface 110. Therefore, the active area AR1 is surrounded by the frame area AR2. The active area AR1 is the area of ​​the display surface 110 where an image is displayed. On the other hand, the frame area AR2 is the area of ​​the display surface 110 where an image is not displayed.

[0026] As shown in Fig. 3, in the example of the first embodiment, the display surface 110 can be divided into a plurality of partial regions. As will be described later, the total number of partial regions is determined by the specifications of the distance sensor SR. In the example of Fig. 3, the display surface 110 is divided into 16 partial regions.

[0027] The distance sensor SR in the example of the first embodiment is arranged so as to be able to detect the distance between each of the plurality of partial regions belonging to the display surface 110 and the object. For example, a multi-zone sensor can be used as the distance sensor SR. This allows the above-mentioned distance to be detected using a single distance sensor SR. Therefore, in the first embodiment, a case where the number of distance sensors SR is one will be exemplified.

[0028] Known types of multi-zone sensors include infrared and capacitance types. From the viewpoint of the upper limit of the detectable distance, infrared multi-zone sensors are more advantageous than capacitance multi-zone sensors. Therefore, in the first embodiment, a case where the distance sensor SR is an infrared multi-zone sensor is illustrated.

[0029] It is generally known that capacitive multi-zone sensors have difficulty detecting distances of more than approximately 100 mm (millimeters), whereas infrared multi-zone sensors can detect distances of more than approximately 3000 mm.

[0030] Fig. 4 shows various examples of the arrangement of the distance sensor SR. Fig. 4 shows a schematic diagram of the positional relationship between the distance sensor SR and the active area AR1. In the examples indicated by reference numerals 410 and 420 in Fig. 4, the distance sensor SR is located outside the frame area AR2 (not shown in Fig. 4).

[0031] In the example indicated by reference numeral 410, the distance sensor SR is located near the boundary between the active area AR1 and the frame area AR2. In the example indicated by reference numeral 420, the distance sensor SR is located near the center of the active area AR1. Therefore, in the example indicated by reference numeral 420, the distance sensor SR is located near the center of the display surface 110.

[0032] In the examples of reference numerals 410 and 420, an opening is formed in the active area AR1 to transmit infrared rays emitted from the range sensor SR and infrared rays reflected from the target object. That is, in the examples of reference numerals 410 and 420, an opening for exposing the range sensor SR is formed in the active area AR1.

[0033] 4, the range sensor SR is located within the frame area AR2 (not shown). In this case, it is not necessary to form an opening for exposing the range sensor SR in the active area AR1.

[0034] Figure 5 illustrates a 4x4 mode multi-zone sensor. This multi-zone sensor is designed to divide the entire area to be detected into 16 partial areas. This multi-zone sensor can detect the distance between each of the 16 partial areas and the target object.

[0035] In the example of FIG. 5, numbers are assigned to indicate each of the 16 partial regions. In this specification, for example, the partial region assigned the number "1" is referred to as the "first partial region." In the example of FIG. 5, the first partial region is located in the lower left corner of the entire region. The fourth partial region is located in the lower right corner of the entire region. The thirteenth partial region is located in the upper left corner of the entire region. The sixteenth partial region is located in the upper right corner of the entire region.

[0036] For this reason, in the example of Figure 5, the first partial region is referred to as the lower left corner region, the fourth partial region is referred to as the lower right corner region, the thirteenth partial region is referred to as the upper left corner region, and the sixteenth partial region is referred to as the upper right corner region.

[0037] In this specification, the lower left corner area, the lower right corner area, the upper left corner area, and the upper right corner area are collectively referred to as corner areas. On the other hand, partial areas that do not belong to the corner areas are referred to as non-corner areas. In the example of Figure 5, the non-corner area is made up of 12 partial areas.

[0038] FIG. 6 is a diagram illustrating an 8x8 mode multi-zone sensor. FIG. 6 is a diagram paired with FIG. 5. The multi-zone sensor is designed to divide the entire area to be detected into 64 partial areas. The multi-zone sensor can detect the distance between each of the 64 partial areas and the target object. Therefore, the multi-zone sensor in FIG. 6 has higher spatial resolution than the multi-zone sensor in FIG. 5.

[0039] In the example of FIG. 5, each corner area is made up of three partial areas. The lower left corner area is made up of the first, second, and ninth partial areas. The lower right corner area is made up of the seventh, eighth, and sixteenth partial areas. The upper left corner area is made up of the forty-ninth, fifty-seventh, and fifty-eighth partial areas. The upper right corner area is made up of the fifty-sixth, sixty-third, and sixty-fourth partial areas. Therefore, the non-corner area in the example of FIG. 5 is made up of 52 partial areas.

[0040] The multi-zone sensor in the example of Fig. 5 may be used as the distance sensor SR, or the multi-zone sensor in the example of Fig. 6 may be used as the distance sensor SR. For the sake of clarity, the first embodiment will describe the case where the multi-zone sensor in the example of Fig. 5 is used as the distance sensor SR.

[0041] 7 shows an example of a block composed of multiple partial regions in a multi-zone sensor. In the example of FIG. 7, the entire region to be detected is divided into a first block BLK1 and a second block BLK2. The first block BLK1 and the second block BLK2 may be preset by the designer of the display device 1.

[0042] The first block BLK1 in the example of Fig. 7 is composed of eight partial regions located on the left side of the entire region. For this reason, the first block BLK1 in the example of Fig. 7 may also be referred to as the left block. The first block BLK1 in the example of Fig. 7 is composed of a first partial region, a second partial region, a fifth partial region, a sixth partial region, a ninth partial region, a tenth partial region, a thirteenth partial region, and a fourteenth partial region.

[0043] 7 can be said to be a block corresponding to the first side described above. Therefore, focusing on the detection values ​​of each partial area belonging to the first block BLK1 is considered to be useful in determining whether the first user U1 and the display surface 110 are close to each other.

[0044] On the other hand, the second block BLK2 in the example of Fig. 7 is the portion of the entire area other than the first block BLK1. Therefore, the second block BLK2 in the example of Fig. 7 is composed of eight partial areas located on the right side. For this reason, the second block BLK2 in the example of Fig. 7 may also be referred to as the right block. The second block BLK2 in the example of Fig. 7 is composed of the third partial area, the fourth partial area, the seventh partial area, the eighth partial area, the eleventh partial area, the twelfth partial area, the fifteenth partial area, and the sixteenth partial area.

[0045] 7 can be said to be a block corresponding to the second side described above. Therefore, focusing on the detection values ​​of each partial area belonging to the second block BLK2 is considered to be useful in determining whether the second user U2 and the display surface 110 are close to each other.

[0046] (Example of processing in proximity determination unit 22) Next, an example of processing in the proximity determination unit 22 will be described with reference to Figures 8 to 10. In the example of Figures 8 to 10, it is assumed that a first block BLK1 and a second block BLK2 have been set as described above in Figure 7.

[0047] In the examples of Figures 8 to 10, the numerical values ​​written in a certain partial area represent the detected distance value in that partial area. In the examples of Figures 8 to 10, the unit of distance is mm. In the examples of Figures 8 to 10, it is assumed that a threshold value (distance threshold) for the detected distance value is set. In the first embodiment, a case where the threshold value is set to 250 mm is illustrated.

[0048] In this specification, the number of partial areas belonging to the first block BLK1 for which a detection value equal to or less than the distance threshold is obtained is referred to as the "first number of areas of interest." The number of partial areas belonging to the second block BLK2 for which a detection value equal to or less than the distance threshold is obtained is referred to as the "second number of areas of interest." The proximity determination unit 22 derives the first number of areas of interest and the second number of areas of interest based on the detection result of the distance sensor SR.

[0049] 8 to 10, it is assumed that thresholds (number thresholds) are set for the first number of items of interest and the second number of items of interest. In the first embodiment, a case where the number threshold is set to 4 is illustrated.

[0050] The palm of the hand is an example of the object in the examples of Figures 8 to 10. In the examples of Figures 8 to 10, a scene is assumed in which a user is trying to bring an object close to the input device 30 located near the display surface 110 in order to perform an operation on the display surface 110.

[0051] (1) If (i) the first number of targets is less than the number threshold and (ii) the second number of targets is less than the number threshold, the proximity determination unit 22 determines that there is no proximity between the display surface 110 and the object in either the first block BLK1 or the second block BLK2.

[0052] Fig. 8 shows an example in which there is no proximity between the display surface 110 and the object in either the first block BLK1 or the second block BLK2. In the example of Fig. 8, the object is relatively far from the display surface 110. Therefore, in the example of Fig. 8, both the first number of objects of interest and the second number of objects of interest are 0.

[0053] Therefore, in the example of Fig. 8, the proximity determination unit 22 determines that the display surface 110 is not in proximity to the object in either the first block BLK1 or the second block BLK2. In the example of Fig. 8, the notation "NO_Detect" located below the first block BLK1 indicates that it has been determined that the display surface 110 is not in proximity to the object in the first block BLK1. Furthermore, the notation "NO_Detect" located below the second block BLK2 indicates that it has been determined that the display surface 110 is not in proximity to the object in the second block BLK2.

[0054] From the above, the proximity determination unit 22 may determine that no operation is being performed on the display surface 110 by the object from either the first side or the second side when (i) the first number of objects of interest is less than the number threshold and (ii) the second number of objects of interest is less than the number threshold.

[0055] (2) The proximity determination unit 22 determines that proximity between the display surface 110 and the object has occurred in the first block BLK1 if (i) the first number of targets is equal to or greater than the number threshold and (ii) the first number of targets is greater than the second number of targets.

[0056] 9 shows an example in which the object is close to the display surface 110 in the first block BLK1. In the example of FIG. 9, the object is located to the left of the display surface 110 compared to the example of FIG. 8. In addition, in the example of FIG. 9, the distance between the object and the display surface 110 is slightly shorter. Therefore, in the example of FIG. 9, (i) the first number of objects of interest is equal to or greater than the number threshold, and (ii) the first number of objects of interest is greater than the second number of objects of interest.

[0057] Therefore, in the example of Fig. 9, the proximity determination unit 22 determines that the display surface 110 and the object are in proximity in the first block BLK1. In the example of Fig. 9, the notation "LeftSide_Detect" located below the first block BLK1 indicates that it has been determined that the display surface 110 and the object are in proximity in the first block BLK1 (left block).

[0058] In the example of Fig. 9, the second number of interest is less than the number threshold value. Therefore, in the example of Fig. 9, it is determined that the display surface 110 and the object are not in close proximity to each other in the second block BLK2.

[0059] From the above, the proximity determination unit 22 may determine that an operation is being performed on the display surface 110 by an object from the first side when (i) the first number of targets is equal to or greater than the number threshold and (ii) the first number of targets is greater than the second number of targets.

[0060] (3) The proximity determination unit 22 determines that proximity between the display surface 110 and the object has occurred in the second block BLK2 if (i) the second number of targets is equal to or greater than the number threshold and (ii) the second number of targets is greater than the first number of targets.

[0061] Fig. 10 shows an example in which the object is close to the display surface 110 in the second block BLK2. In the example of Fig. 10, the object is located to the right of the display surface 110 compared to the example of Fig. 8. In the example of Fig. 10, the distance between the object and the display surface 110 is also slightly shorter. Therefore, in the example of Fig. 10, (i) the second number of objects of interest is equal to or greater than the number threshold, and (ii) the second number of objects of interest is greater than the first number of objects of interest.

[0062] 10, the proximity determination unit 22 determines that the display surface 110 and the object are in proximity to each other in the second block BLK2. In the example of Fig. 10, the notation "RightSide_Detect" located below the first block BLK1 indicates that the display surface 110 and the object are in proximity to each other in the second block BLK2 (the right block).

[0063] In the example of Fig. 10, the first number of interest is less than the number threshold value. Therefore, in the example of Fig. 10, it is determined that the display surface 110 and the object are not in close proximity to each other in the first block BLK1.

[0064] From the above, the proximity determination unit 22 may determine that an operation is being performed on the display surface 110 by an object from the second side when (i) the second number of objects of interest is equal to or greater than the number threshold, and (ii) the second number of objects of interest is greater than the first number of objects of interest.

[0065] (effect) As described above, the display device 1 can determine whether the proximity between the display surface 110 and the object is occurring on the first side or the second side based on the detection result of the distance sensor SR (i.e., the distance between the object and each of the multiple partial areas belonging to the display surface 110). Therefore, the display device 1 can also determine whether the object is operating the display surface 110 from the first side or the second side based on the detection result of the distance sensor SR.

[0066] According to the display device 1, the display mode of at least one of the first image and the second image can be changed based on the detection result of the distance sensor SR. Therefore, as an example, the display control unit 21 may change the display mode of at least one of the first image and the second image based on the determination result of the proximity determination unit 22.

[0067] For example, the display control unit 21 may enable or disable a display function for at least one of the first image and the second image based on the determination result of the proximity determination unit 22. The display control unit 21 may change the frame rate at which at least one of the first image and the second image is displayed based on the determination result of the proximity determination unit 22. Disabling the display function and reducing the frame rate are both beneficial for reducing power consumption in the display device 1.

[0068] As described above, for example, when the first user U1 attempts to perform an operation on the input device 30, it is assumed that an object that is a part of the body of the first user U1 (e.g., a finger) will come close to the display surface 110.

[0069] Therefore, the display device 1 may change the display mode of the first image when it is determined that the first side of the display surface 110 is approaching the object. Therefore, for example, the display device 1 may change the display mode of the first image when it is determined that an operation is being performed by the object from the first side of the display surface 110. As an example, the display device 1 may display an auxiliary icon on the first side of the display surface 110 to guide the operation of the first user U1.

[0070] The above description of the first user U1 and the first side of the display surface 110 also applies to the second user U2 and the second side of the display surface 110. For example, the display device 1 may change the display mode of the second image when it determines that the second side of the display surface 110 is approaching an object. The display device 1 may change the display mode of the second image when it determines that an operation is being performed by an object from the second side of the display surface 110.

[0071] In conventional technology (for example, the technology of Patent Document 1), it was common to provide multiple sensors (infrared sensors) to determine whether the object was approaching on the left side (first side) or the right side (second side) of the display surface.

[0072] In contrast, in the first embodiment, a multi-zone sensor (e.g., a multi-zone infrared sensor) is used as the sensor. This makes it possible to determine whether the proximity between the display surface and the object is occurring on the first side or the second side based on the detection result of one sensor. Therefore, the cost related to the sensor can be reduced compared to conventional techniques.

[0073] Furthermore, in the technology of Patent Document 1, multiple sensors are arranged in the frame area of ​​the display surface. Therefore, in conventional technologies, it was necessary to enlarge the frame area in order to secure space for arranging the multiple sensors. Increasing the frame area may be undesirable because it leads to an increase in the size of the display device.

[0074] In addition, conventional technologies do not allow sensors to be placed near the center of the display screen, which may reduce the accuracy of determining whether the object is approaching on the left or right side of the display device when the object is located near the center of the display screen.

[0075] On the other hand, as described above, in the first embodiment, it is not necessary to arrange the sensor in the frame region of the display surface. Therefore, it is not necessary to enlarge the frame region in the first embodiment. Therefore, according to the first embodiment, it is possible to reduce the size of the display device.

[0076] Furthermore, as described above, in the first embodiment, the sensor can be disposed near the center of the display surface. Therefore, in the first embodiment, even if the object is located near the center of the display surface, it is possible to improve the accuracy of determining whether the object is approaching on the left or right side of the display device compared to conventional methods.

[0077] As described above, according to the first embodiment, it is possible to determine the proximity of an object to the display surface of the multi-view display device using a method different from conventional methods, and therefore it is also possible to detect an operation on the display surface of the multi-view display device using a method different from conventional methods.

[0078] (supplement) (1) In the first embodiment, the case where the first number of targets and the second number of targets are different is illustrated. However, the process when the first number of targets and the second number of targets are equal may be predetermined by the designer of the display device 1.

[0079] For example, if (i) the first number of objects of interest and the second number of objects of interest are equal, and (ii) both the first number of objects of interest and the second number of objects of interest are equal to or greater than a number threshold, the proximity determination unit 22 may determine that proximity between the display surface 110 and the object has occurred in a predetermined one of the first block BLK1 and the second block BLK2 (e.g., the first block BLK1).

[0080] Therefore, if (i) the first number of targets and the second number of targets are equal, and (ii) both the first number of targets and the second number of targets are equal to or greater than the number threshold, the proximity determination unit 22 may determine that an operation on the display surface 110 by the object is being performed from a predetermined side (e.g., the first side) of the first side and the second side.

[0081] (2) When a first user U1 attempts to perform an operation on the display surface 110, it is considered that the first user U1 will often bring his / her finger closer to the left edge of the display surface 110 rather than bringing his / her finger closer to the center of the display surface 110. On the other hand, when a second user U2 attempts to perform an operation on the display surface 110, it is considered that the second user U2 will often bring his / her finger closer to the right edge of the display surface 110 rather than bringing his / her finger closer to the center of the display surface 110.

[0082] For this reason, for example, in addition to the first block BLK1 and the second block BLK2, a third block BLK3 may be further set. As an example, the third block BLK3 may be set as an area belonging to the center of the display surface 110. The first block BLK1 may be set as an area of ​​the display surface 110 to the left of the third block BLK3. Meanwhile, the second block BLK2 may be set as an area of ​​the display surface 110 to the right of the third block BLK3.

[0083] For example, if the multi-zone sensor of the example of FIG. 5 is used as the distance sensor SR, the third block BLK3 may be composed of the second, third, sixth, seventh, tenth, eleventh, fourteenth, and fifteenth partial regions. In this case, the first block BLK1 may be composed of the first, fifth, ninth, and thirteenth partial regions. Furthermore, the second block BLK2 may be composed of the fourth, eighth, twelfth, and sixteenth partial regions.

[0084] [Embodiment 2] 11 is a block diagram showing an example of the configuration of a display device 1A of embodiment 2. The display device 1A includes a touch sensor 33. The touch sensor 33 is an example of the input device 30 described in embodiment 1.

[0085] In the second embodiment, the touch sensor 33 is positioned so as to overlap the display surface 110 when viewed from the normal direction of the display surface 110 of the display device 1A. Therefore, a user of the display device 1A can perform an operation on the touch sensor 33 by touching the display surface 110.

[0086] For example, the first user U1 can perform an operation on the touch sensor 33 from the first side, while the second user U2 can perform an operation on the touch sensor 33 from the second side.

[0087] The control unit of the display device 1A is referred to as a control unit 20A. The control unit 20A includes a touch sensor control unit 23. Therefore, the control unit 20A can control the touch sensor 33 in addition to controlling the display unit 10.

[0088] Based on the detection result of the distance sensor SR, the touch sensor control unit 23 may control the touch sensor 33. As an example, based on the detection result of the distance sensor SR, the touch sensor control unit 23 may change the operation mode of at least one of the first side and the second side of the touch sensor 33.

[0089] Therefore, for example, the touch sensor control unit 23 may change the operation mode of at least one of the first side and the second side of the touch sensor 33 based on the determination result of the proximity determination unit 22.

[0090] For example, the touch sensor control unit 23 may enable or disable an input reception function of at least one of the first side and the second side of the touch sensor 33 based on the determination result of the proximity determination unit 22. The touch sensor control unit 23 may change the scan rate of at least one of the first side and the second side of the touch sensor 33 based on the determination result of the proximity determination unit 22. Disabling the input reception function and reducing the scan rate are both beneficial for reducing power consumption in the display device 1A.

[0091] As an example, when it is determined that the first side of the display surface 110 is approaching an object, the display device 1A may change the operation mode of the first side of the touch sensor 33. Therefore, when it is determined that an operation is being performed by an object from the first side of the display surface 110, the display device 1A may change the operation mode of the first side of the touch sensor 33.

[0092] Similarly, when it is determined that the second side of the display surface 110 is approaching the object, the display device 1A may change the operation mode of the second side of the touch sensor 33. When it is determined that an operation is being performed by the object from the second side of the display surface 110, the display device 1A may change the operation mode of the second side of the touch sensor 33.

[0093] [Software implementation example] The functions of the display devices 1 to 1A (hereinafter referred to as "devices") can be realized by a program that causes a computer to function as the device, and a program that causes a computer to function as each control block of the device (particularly each part included in the control units 20 to 20A).

[0094] In this case, the device includes a computer having at least one control device (e.g., a processor) and at least one storage device (e.g., a memory) as hardware for executing the program. The control device and storage device execute the program, thereby realizing the functions described in each of the above embodiments.

[0095] The program may be non-transitory and may be recorded on one or more computer-readable recording media. The recording media may or may not be included in the device. In the latter case, the program may be supplied to the device via any wired or wireless transmission medium.

[0096] In addition, some or all of the functions of each of the control blocks can be realized by a logic circuit. For example, an integrated circuit in which a logic circuit that functions as each of the control blocks is formed is also included in the scope of one aspect of the present disclosure. In addition, the functions of each of the control blocks can also be realized by, for example, a quantum computer.

[0097] The processes described in the above embodiments may be executed by AI (Artificial Intelligence). In this case, the AI ​​may run on the control device or on another device (for example, an edge computer or a cloud server).

[0098] 〔summary〕 A display device according to aspect 1 of the present disclosure is a display device capable of presenting a first image to a first user located on a first side of a display surface, and presenting a second image different from the first image to a second user located on a second side different from the first side, and has a distance sensor that detects the distance between each of a plurality of partial regions belonging to the display surface and an object, and the display device determines whether the object is operating the display surface from the first side or the second side based on the distance detected by the distance sensor.

[0099] In a display device according to a second aspect of the present disclosure, in the first aspect, the distance sensor may be a multi-zone infrared sensor.

[0100] In the display device according to the third aspect of the present disclosure, in the first or second aspect, the number of the distance sensors may be one.

[0101] In the display device according to the fourth aspect of the present disclosure, in any one of the first to third aspects, the distance sensor may be positioned outside a frame area of ​​the display surface.

[0102] In a display device according to a fifth aspect of the present disclosure, in the fourth aspect, the distance sensor may be located near the center of the display surface.

[0103] A display device according to aspect 6 of the present disclosure, in any one of aspects 1 to 5, may change the display mode of at least one of the first image and the second image based on the distance detected by the distance sensor.

[0104] A display device according to aspect 7 of the present disclosure may, in aspect 6, change the display mode of the first image when it determines that the operation is being performed from the first side of the display surface.

[0105] A display device according to aspect 8 of the present disclosure may change the display mode of the second image when it determines in aspect 6 or 7 that the operation is being performed from the second side of the display surface.

[0106] A display device according to aspect 9 of the present disclosure may, in any one of aspects 1 to 8, further include a touch sensor positioned so as to overlap the display surface when viewed from the normal direction of the display surface, and the display device may change the operating mode of at least one of the first side and the second side of the touch sensor based on the distance detected by the distance sensor.

[0107] In aspect 9, the display device of aspect 10 of the present disclosure may change the operating mode of the first side of the touch sensor when it determines that the operation is being performed from the first side of the display surface.

[0108] A display device according to aspect 11 of the present disclosure may, in aspect 9 or 10, change the operating mode of the second side of the touch sensor when it determines that the operation is being performed from the second side of the display surface.

[0109] A control device according to aspect 12 of the present disclosure is a control device that controls a display device capable of presenting a first image to a first user located on a first side of a display surface and presenting a second image different from the first image to a second user located on a second side different from the first side, wherein the control device acquires the distance between an object and each of a plurality of partial areas belonging to the display surface from a distance sensor that detects the distance, and determines, based on the distance, whether the object is operating the display surface from the first side or the second side.

[0110] A control method according to aspect 13 of the present disclosure is a control method for controlling a display device capable of presenting a first image to a first user located on a first side of a display surface, and presenting a second image different from the first image to a second user located on a second side different from the first side, and includes the steps of: acquiring the distance between an object and each of a plurality of partial areas belonging to the display surface from a distance sensor that detects the distance; and determining, based on the distance, whether the object is operating the display surface from the first side or the second side.

[0111] [Additional Notes] One aspect of the present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of one aspect of the present disclosure. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. [Explanation of symbols]

[0112] 1,1A display device 10 Display 11 Display panel 20, 20A Control unit (control device) 21 Display control unit 22 Proximity determination unit 23 Touch sensor control unit 30 Input Devices 33 Touch Sensor 110 Display surface SR distance sensor (infrared multi-zone sensor) IMG1 1st image IMG2 2nd image U1 First User U2 Second user AR1 active region AR2 Frame Area BLK1 1st Block BLK2 2nd Block

Claims

1. A display device capable of presenting a first image to a first user positioned on a first side of a display surface, and presenting a second image different from the first image to a second user positioned on a second side different from the first side, a distance sensor for detecting a distance between each of a plurality of partial areas belonging to the display surface and an object; The display device determines whether the object is operating on the display surface from the first side or the second side based on the distance detected by the distance sensor.

2. The display device according to claim 1 , wherein the distance sensor is an infrared multi-zone sensor.

3. The display device according to claim 1 , wherein the number of the distance sensors is one.

4. The display device according to claim 1 , wherein the distance sensor is positioned outside a frame area of ​​the display surface.

5. The display device according to claim 4 , wherein the distance sensor is located near the center of the display surface.

6. The display device according to claim 1 , wherein the display device changes a display mode of at least one of the first image and the second image based on the distance detected by the distance sensor.

7. The display device according to claim 6 , wherein the display device changes a display mode of the first image when it is determined that the operation is being performed from the first side of the display surface.

8. The display device according to claim 6 , wherein the display device changes a display mode of the second image when it is determined that the operation is being performed from the second side of the display surface.

9. the display device further includes a touch sensor positioned so as to overlap the display surface when viewed from a normal direction of the display surface; The display device according to claim 1 , wherein the display device changes an operation mode of at least one of the first side and the second side of the touch sensor based on the distance detected by the distance sensor.

10. The display device according to claim 9 , wherein the display device changes an operating state of the first side of the touch sensor when it is determined that the operation is being performed from the first side of the display surface.

11. The display device according to claim 9 , wherein the display device changes an operation mode of the second side of the touch sensor when it is determined that the operation is being performed from the second side of the display surface.

12. A control device that controls a display device capable of presenting a first image to a first user located on a first side of a display surface and presenting a second image different from the first image to a second user located on a second side different from the first side, The control device acquiring the distances between each of a plurality of partial regions belonging to the display surface and the object from a distance sensor that detects the distances; The control device determines, based on the distance, whether the operation on the display surface is being performed by the object from the first side or the second side.

13. 1. A control method for controlling a display device capable of presenting a first image to a first user positioned on a first side of a display surface, and presenting a second image different from the first image to a second user positioned on a second side different from the first side, comprising: acquiring a distance between each of a plurality of partial regions belonging to the display surface and an object from a distance sensor that detects the distance; and determining, based on the distance, whether the object is operating on the display surface from the first side or the second side.

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