JP2020080055A - Area setting method and information apparatus - Google Patents

Abstract

To provide an area setting method and an information apparatus to set up boundaries between multiple touch areas appropriately when the touch areas are set up for multiple icons that are close to each other, respectively.SOLUTION: An information apparatus 1 is provided with a silhouette projection model creation unit 112, a placement unit 113, and an area setting unit 114. The silhouette projection model creation unit 112 prepares a curved surface model curved in a direction perpendicular to a display surface of a touch panel 30, generates a curved surface silhouette image in which a silhouette image corresponding to an icon displayed on the touch panel 30 is projected onto the curved surface model, and creates a silhouette projection model based on the curved surface silhouette image. The placement portion 113 places the created silhouette projection model at a predetermined position on a drawing plane parallel to the display plane of the touch panel 30. The area setting portion 114 sets up a touch area of the touch panel 30 based on the silhouette projection model placed at a predetermined position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a region setting method for a touch panel and an information device equipped with the touch panel.

  BACKGROUND ART Conventionally, a touch panel is known in which various figures and characters are displayed on a screen and an input operation can be performed by touching an arbitrary area. When such a touch panel is mounted on a vehicle such as an automobile and used, acceleration and vibration are generated by the traveling of the vehicle, which makes it difficult for the user to touch the correct area.

  Regarding the improvement of touch operability in a touch panel, for example, the technique of Patent Document 1 below is known. In Patent Document 1, a measurement unit that measures acceleration, a display control unit that displays an object for receiving a processing instruction on a display screen, a detection unit that detects an operation on the object, and the detection unit include: A setting unit that sets a reaction region of the display screen that can be detected as an operation on an object; and the setting unit is a range of the reaction region according to the magnitude and direction of the acceleration measured by the measurement unit. There is disclosed an information processing device characterized in that

JP, 2016-115107, A

  In the technique of Patent Document 1, when a plurality of objects (icons) are displayed close to each other on the screen, the enlarged reaction areas (touch areas) may overlap each other. In such a case, when the user performs a touch operation on a portion where a plurality of touch areas overlap each other, it is not possible to specify which icon the user has designated, and thus the touch operation content cannot be correctly recognized. Therefore, when setting a plurality of touch areas corresponding to a plurality of icons that are close to each other, it is necessary to set the boundaries between the touch areas appropriately.

An area setting method according to the present invention is a method of setting a touch area for receiving a touch operation of a user on an icon displayed on a touch panel on the touch panel, which is a curved surface model curved in a direction perpendicular to a display surface of the touch panel. To generate a curved surface silhouette image in which a silhouette image corresponding to the icon is projected onto the curved surface model, and a silhouette projection model creation process for creating a silhouette projection model based on the curved surface silhouette image, and the silhouette projection model A computer executes an arrangement process of arranging at a predetermined position on a plane parallel to the display surface, and a region setting process of setting the touch region based on the silhouette projection model arranged at the predetermined position. In the area setting process, when the first silhouette projection model and the second silhouette projection model respectively included in the silhouette projection model overlap each other, the first silhouette projection model and the second silhouette projection model are overlapped with each other. The first touch area is defined as a line of intersection with the model, which is a boundary line between the first touch area corresponding to the first silhouette projection model and the second touch area corresponding to the second silhouette projection model. And setting the second touch area.
The information device according to the present invention provides a touch panel in which a touch area for receiving a user's touch operation with respect to the icon is set and a curved surface model curved in a direction perpendicular to the display surface of the touch panel. A silhouette projection model creation unit that creates a silhouette projection model based on the curved surface silhouette image by projecting a silhouette image corresponding to the icon onto the curved surface model; and the silhouette projection model on the display surface. And a region setting unit configured to set the touch region based on the silhouette projection model disposed at the predetermined position, and the region setting unit, When the first silhouette projection model and the second silhouette projection model respectively included in the silhouette projection model overlap each other, an intersection line between the first silhouette projection model and the second silhouette projection model is formed. , The first touch area corresponding to the first silhouette projection model and the second touch area corresponding to the second silhouette projection model are defined as boundary lines between the first touch area and the second touch area. Set the area.

  According to the present invention, when a plurality of touch areas are set corresponding to a plurality of icons that are close to each other, the boundaries between the touch areas can be set appropriately.

It is a figure showing composition of an information equipment concerning one embodiment of the present invention. It is a figure which shows an example of the touch area|region set with respect to the menu screen displayed on a touch panel. It is explanatory drawing of the silhouette projection model created at the time of setting a touch area. It is explanatory drawing of the setting method of the boundary line in case a some touch area overlaps. 6 is a flowchart showing a flow of touch area setting processing in the information device according to the embodiment of the present invention.

  FIG. 1 is a diagram showing a configuration of an information device according to an embodiment of the present invention. The information device 1 shown in FIG. 1 is mounted in a vehicle and used, for example, to provide various kinds of information to a user who is in the vehicle. The information device 1 includes a control unit 10, a storage unit 20, a touch panel 30, a speaker 40, a ROM (Read Only Memory) 50, a RAM (Random Access Memory) 60, a color buffer 70, and an ID buffer 80.

  The control unit 10 is a unit responsible for various processes and controls executed by the information device 1, and is configured using a computer such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit). The control unit 10 includes, as its functions, functional blocks of a touch panel control unit 11, a communication control unit 12, a navigation processing unit 13, a content processing unit 14, and a current position acquisition unit 15. The control unit 10 realizes these functional blocks by executing a predetermined program stored in the ROM 50, for example.

  The storage unit 20 is a unit that stores various information used in the control unit 10, and is configured by using, for example, an HDD (Hard Disc Drive), an SSD (Solid State Drive), a memory card, or the like. The storage unit 20 includes a map database (map DB) 21 that stores map information and a content database (content DB) 22 that stores content information such as various videos and music. Information other than this may be stored in the storage unit 20.

  The touch panel 30 displays various images and videos on the screen according to the control of the control unit 10 and detects a touch operation performed by the user on the screen. The content of the touch operation detected by the touch panel 30 is recognized by the control unit 10 and reflected in the process executed by the control unit 10. The touch panel 30 is configured using, for example, a liquid crystal display or an organic EL display combined with a touch sensor.

  The speaker 40 outputs various sounds according to the control of the control unit 10.

  The ROM 50 stores various programs executed by the control unit 10. The program stored in the ROM 50 is read by the control unit 10 and executed by the control unit 10 using the RAM 60 as a work area. The ROM 50 and the RAM 60 may be realized by using a part of the storage unit 20.

  The color buffer 70 is a buffer memory for storing color information of an image or video displayed on the touch panel 30. By using the color buffer 70, the control unit 10 can display various images and videos drawn by known drawing processing on the touch panel 30.

  The ID buffer 80 is a buffer memory for storing the display object ID. The display object ID stored in the ID buffer 80 is information representing the shapes of various display objects drawn by the control unit 10. The control unit 10 displays various images and videos on the touch panel 30 by using the display object ID stored in the ID buffer 80 instead of or in combination with the color information stored in the color buffer 70. It is possible to The control unit 10 can create the display object ID stored in the ID buffer 80 independently of the color information stored in the color buffer 70 by a well-known drawing process.

  In the information device 1 of the present embodiment, the display object ID stored in the ID buffer 80 is not used for displaying an image on the touch panel 30, but is used for setting a touch area when an icon is displayed on the touch panel 30. .. Thereby, even when a plurality of icons are displayed close to each other on the screen, an appropriate touch area can be set for each icon. The details of this point will be described later.

  Next, each functional block of the control unit 10 will be described below.

  The touch panel control unit 11 controls the touch panel 30. The touch panel control unit 11 includes a display control unit 111, a silhouette projection model creation unit 112, an arrangement unit 113, a region setting unit 114, and a touch operation detection unit 115.

  The display control unit 111 is a unit that performs various image and video drawing processes, stores the generated color information in the color buffer 70, and displays the color information on the touch panel 30. The silhouette projection model creation unit 112 and the arrangement unit 113 are units that use the ID buffer 80 to perform processing for the area setting unit 114 to set the touch area. The details of the processing performed by these will be described later. The area setting unit 114 is a unit that sets the touch area on the touch panel 30 using the processing results of the silhouette projection model creation unit 112 and the arrangement unit 113. The touch operation detection unit 115 detects a touch operation input by the user on the touch panel 30 based on the touch area set by the area setting unit 114 and recognizes the operation content.

  The communication control unit 12 controls communication performed between the information equipment 1 and another device using a communication device (not shown). By the communication control performed by the communication control unit 12, the information device 1 can transmit and receive information to and from other devices in the vehicle in which the information device 1 is mounted, and can be used for vehicle traveling control and the like. . Further, new map information and content information can be acquired from a server installed outside the vehicle and stored in the map DB 21 and the content DB 22.

  The navigation processing unit 13 acquires map information from the map DB 21 and performs navigation processing for guiding the vehicle to the destination. The navigation process includes, for example, a destination search process and a route search process from the current position of the vehicle to the set destination. Further, it is also possible to display a map around the vehicle or an arbitrary point on the touch panel 30 by causing the display control unit 111 to draw a map based on the map information.

  The content processing unit 14 acquires content information from the content DB 22 and provides it to the user using the touch panel 30 and the speaker 40. The display control unit 111 is used when displaying an image or video based on the content information on the touch panel 30.

  The current position acquisition unit 15 acquires the current position of the vehicle based on, for example, a GPS signal received by a GPS sensor (not shown). The current position of the vehicle acquired by the current position acquisition unit 15 is used for navigation processing performed by the navigation processing unit 13.

  Next, a method of setting the touch area on the touch panel 30 will be described. FIG. 2 is a diagram showing an example of a touch area set on the menu screen displayed on the touch panel 30. Icons 31 to 37 are displayed on the menu screen shown in FIG. 2, and touch areas 41 to 47 are set for the respective icons 31 to 37. The touch areas 41 to 47 are set not only in the portions of the icons 31 to 37, but also in a predetermined range around the icons 31 to 37 so that the user can easily perform a touch operation even in a traveling vehicle. In FIG. 2, the touch areas 41 to 47 are hatched around the icons 31 to 37 for easy understanding, but only the icons 31 to 37 are actually displayed on the touch panel 30. The touch areas 41 to 47 are not displayed.

  In the menu screen shown in FIG. 2, for example, in a portion indicated by reference numeral 51 surrounded by a dotted line, a touch area 42 corresponding to the icon 32 and a touch area 44 corresponding to the icon 34 overlap each other. In such a portion where a plurality of touch areas overlap with each other, it is necessary to appropriately determine the boundary line between the touch areas in order to avoid overlapping of touch operations. Therefore, in the present embodiment, the touch area is set by using the display object ID stored in the ID buffer 80, so that the boundary line between the touch areas can be appropriately determined. The specific method will be described below. Although only the portion 51 where the touch area 42 and the touch area 44 overlap with each other has been described above, the same applies to other overlapping portions.

  FIG. 3 is an explanatory diagram of a silhouette projection model created when the touch area is set. The silhouette projection model creation unit 112 of the touch panel control unit 11 creates a silhouette projection model by, for example, the method shown in FIG. 3 prior to setting the touch area. In FIG. 3, the vertical direction of the figure represents the X-axis direction and the Y-axis direction, that is, the direction parallel to the display surface of the touch panel 30, and the horizontal direction of the figure is the Z-axis direction, that is, the display surface of the touch panel 30. It represents the vertical depth direction. Since the silhouette projection model has the same structure in the X-axis direction and the Y-axis direction, these are commonly shown in FIG.

  The silhouette projection model creation unit 112 first prepares a curved surface model 61 as shown in FIG. The curved surface model 61 has a shape curved in a direction perpendicular to the display surface of the touch panel 30, that is, in the Z-axis direction. The silhouette projection model creation unit 112 projects the silhouette image 62 onto the curved surface model 61 to generate a curved surface silhouette image 63 in which the silhouette image 62 is deformed along the curved surface model 61. The silhouette image 62 is set as an image expressing only the shape (outline) of each icon with respect to the icons 31 to 37 in FIG. That is, in the silhouette image 62, the color of each icon is not expressed. Further, in order to speed up the processing, it is preferable to set the resolution of the silhouette image 62 lower than the resolution of the corresponding icon.

  The silhouette projection model creation unit 112 creates the silhouette projection model 64 based on the curved silhouette image 63 by enlarging the curved silhouette image 63 generated as described above in a direction parallel to the display surface of the touch panel 30. The enlargement ratio at this time is preset according to the ratio of the size of the touch areas 41 to 47 to the icons 31 to 37 of FIG. That is, the curved surface silhouette image 63 is enlarged so that the sizes of the created silhouette projection model 64 in the X and Y directions are the same as the sizes of the touch area to be set in the X and Y directions, respectively. Thereby, as shown in FIG. 2, the touch areas 41 to 47 larger than the icons 31 to 37 are set.

  The arranging unit 113 arranges the silhouette projection model 64 created by the silhouette projection model creating unit 112 as described above at a predetermined position on the drawing plane 65 set in the ID buffer 80. The drawing plane 65 represents a plane on which the display object represented by storing the display object ID in the ID buffer 80 is drawn, and is set parallel to the display surface of the touch panel 30. At this time, the arranging unit 113 matches the display position (the position of the center of gravity) of the icon corresponding to the silhouette image 62 on the menu screen with the position (the position of the apex) on the drawing plane 65 of the silhouette projection model 64. As described above, the silhouette projection model 64 is arranged on the drawing plane 65. As a result, information on the silhouette projection model 64 having a length not only in the XY plane direction but also in the Z direction (depth direction) perpendicular to the display surface of the touch panel 30 is stored in the ID buffer 80.

  Here, the ID buffer 80 has a depth buffer for storing depth information of the display object. Information in the Z direction of the silhouette projection model 64 is stored in this depth buffer in the ID buffer 80.

  The area setting unit 114 sets the touch area on the touch panel 30 based on the silhouette projection model 64 arranged at a predetermined position on the drawing plane 65 by the arrangement unit 113. Specifically, the area of the touch panel 30 corresponding to the range occupied by the silhouette projection model 64 on the drawing plane 65 is set as the touch area. The touch areas 41 to 47 corresponding to the icons 31 to 37 can be set on the touch panel 30 by setting the touch areas to the icons 31 to 37 of FIG. 2, respectively.

  Next, a method of setting a boundary line when a plurality of touch areas overlap each other will be described with reference to FIG. FIG. 4 is a diagram showing how a plurality of silhouette projection models arranged on the drawing plane 65 overlap each other. 4, the vertical direction of the figure represents the X-axis direction and the Y-axis direction, that is, the direction parallel to the display surface of the touch panel 30, and the horizontal direction of the figure is the Z-axis direction, that is, the touch panel. The depth direction perpendicular to the display surface of 30 is shown.

  In FIG. 4, reference numeral 71 represents a display surface of the touch panel 30, and icons 72a to 72c are displayed on the display surface 71. The silhouette projection model creation unit 112 sets silhouette images 62a to 62c for these icons 72a to 72c, respectively, as described in FIG. 3, and projects the silhouette images 62a to 62c onto the curved surface model, respectively. The silhouette projection models 64a to 64c are created by enlarging 63a to 63c. The arrangement unit 113 arranges the silhouette projection models 64a to 64c created by the silhouette projection model creation unit 112 on the drawing plane 65 in association with the respective display positions of the icons 72a to 72c on the display surface 71. The icons 72a to 72c correspond to any of the icons 31 to 37 shown in FIG. 2, respectively.

  Here, the icons 72a to 72c have different sizes in the direction along the display surface 71. Therefore, the sizes of the silhouette projection models 64a to 64c arranged on the drawing plane 65 also differ from each other in the direction along the drawing plane 65. On the other hand, the heights h from the drawing plane 65 to the vertices of the silhouette projection models 64a to 64c are the same as shown in FIG. That is, the silhouette projection models 64a to 64c arranged on the drawing plane 65 change the size in the direction along the drawing plane 65 because the heights are common and the curvatures are different from each other.

  As described above, the silhouette projection model creation unit 112 creates silhouette projection models 64a to 64c that have the same height from the bottom surface to the apex and have different sizes for the icons 72a to 72c that have different sizes. create. At this time, as shown in FIG. 4, when the icons 72a to 72c are close to each other on the display surface 71, parts of the silhouette projection models 64a to 64c arranged on the drawing plane 65 overlap each other, and as a result, , The touch areas set based on the silhouette projection models 64a to 64c may overlap with each other. In such a case, the area setting unit 114 sets the boundary line between the overlapping touch areas by using the height information of the silhouette projection models 64a to 64c, that is, the information in the Z direction stored in the depth buffer.

  Specifically, the area setting unit 114 sets the intersecting line 66a shown in FIG. 4 as the boundary line of the touch area for the overlapping portions of the touch areas corresponding to the silhouette projection models 64a and 64b, respectively. The intersection line 66a is a line formed at a position where the silhouette projection model 64a and the silhouette projection model 64b each having a curved surface intersect with each other, and is easy from the height information of these silhouette projection models stored in the ID buffer 80. Can be specified. That is, the area setting unit 114 stores the height information stored in the depth buffer of the ID buffer 80 for the silhouette projection model 64a drawn on the drawing plane 65, and the silhouette projection model 64b drawn on the drawing plane 65. By comparing with the height information stored in the depth buffer of the ID buffer 80, the position and shape of the intersection line 66a are specified. Since the height information comparison process is implemented as part of the drawing process included in the control unit 10, the position and shape of the intersection line 66a can be easily and quickly specified.

  The area setting unit 114 specifies the intersection line 66a of these silhouette projection models based on the height information of the silhouette projection models 64a and 64b stored in the depth buffers of the ID buffer 80 as described above. Then, the boundary line of the corresponding touch area is set. Similarly, for the silhouette projection models 64b and 64c, the intersection line 66b of these silhouette projection models is specified based on the height information of the silhouette projection models 64b and 64c stored in the depth buffer of the ID buffer 80. , Set the border of the corresponding touch area. As a result, it is possible to easily and quickly set a boundary line optimized as a boundary wall formed by bubbles that mutually stick each other as a boundary line of touch areas overlapping each other.

  FIG. 5 is a flowchart showing a flow of a touch area setting process in the information device 1 according to the embodiment of the present invention. The flowchart shown in FIG. 5 is executed by the touch panel control unit 11 in the control unit 10 which is a computer when a menu screen including a plurality of icons 31 to 37 is displayed on the touch panel 30 as shown in FIG. 2, for example.

  In step S10, the touch panel control section 11 selects an icon to be processed thereafter. Here, for example, any one of the icons 31 to 37 in FIG. 2 is selected as a subsequent processing target.

  In step S20, the touch panel control section 11 causes the silhouette projection model creation section 112 to generate a silhouette image corresponding to the icon selected in step S10.

  In step S30, the touch panel control section 11 causes the silhouette projection model creation section 112 to perform a silhouette projection model creation process for creating a silhouette projection model from the silhouette image created in step S20. Here, as described with reference to FIG. 3, a curved surface model 61 curved in the Z-axis direction is prepared, a curved surface silhouette image is generated by projecting the silhouette image generated in step S20 onto the curved surface model 61, and the curved surface silhouette image is generated. Create a silhouette projection model by enlarging.

  In step S40, the touch panel control unit 11 causes the placement unit 113 to perform placement processing of placing the silhouette projection model created in step S30 at a predetermined position on the drawing plane 65. Here, the position on the drawing plane 65 corresponding to the display position of the icon selected in step S10 is specified, and the information representing the silhouette projection model created in step S30 is stored in the memory area corresponding to the position in the ID buffer 80. By writing, the silhouette projection model is arranged on the drawing plane 65.

  In step S50, the touch panel control section 11 determines whether or not all the icons on the menu screen have been selected in step S10. If all the icons have been selected, the silhouette projection model creation is terminated and the process proceeds to step S60. If there are unselected icons, the process returns to step S10. When returning to step S10, the touch panel control section 11 repeats the processing of steps S20 to S50 after selecting any one of the unselected icons in step S10. As a result, for each icon on the menu screen, as described with reference to FIG. 4, silhouette projection models having the same height from the bottom face to the apex and different sizes are created, and the silhouette projection models are drawn on the drawing plane 65. It is arranged at each predetermined position.

  In step S60, the touch panel control section 11 determines whether or not there are silhouette projection models that overlap each other among the silhouette projection models arranged on the drawing plane 65 in step S40. As a result, if there are overlapping silhouette projection models, the process proceeds to step S70, and if not, the process proceeds to step S80 without executing step S70.

  In step S70, the touch panel control section 11 identifies, by the area setting section 114, an intersection line between the silhouette projection models determined to overlap in step S60. Here, by comparing the height information stored in the depth buffer of the ID buffer 80 with a plurality of overlapping silhouette projection models, as shown by the intersecting lines 66a and 66b described in FIG. 4, these intersecting lines are compared. Specify. When the intersection lines can be specified for all the overlapping silhouette projection models, the process of step S70 is ended and the process proceeds to step S80.

  In step S80, the touch panel control unit 11 causes the region setting unit 114 to perform a region setting process of setting each silhouette projection model arranged on the drawing plane 65 in step S40 as a touch region of each icon. At this time, if the intersecting lines of the silhouette projection models that overlap each other are specified in step S70, the region setting unit 114 sets the intersecting line as the boundary line of the touch region. That is, with respect to the silhouette projection models 64a and 64b that overlap each other in FIG. 4, the intersection line 66a of these silhouette projection models is defined as the touch area corresponding to the silhouette projection model 64a and the touch area corresponding to the silhouette projection model 64b. These touch areas are set as boundaries. Similarly, for the silhouette projection models 64b and 64c overlapping each other in FIG. 4, the intersection line 66b of these silhouette projection models is defined as a touch area corresponding to the silhouette projection model 64b and a touch area corresponding to the silhouette projection model 64c. These touch areas are set as the boundaries of the. When the touch area can be set for all the icons, the touch panel control unit 11 ends the flowchart shown in FIG.

  According to the embodiment of the present invention described above, the following operational effects are obtained.

(1) The information device 1 includes the touch panel 30, the silhouette projection model creation unit 112 that executes the silhouette projection model creation process (step S30), the placement unit 113 that performs the placement process (step S40), and the area setting process ( The area setting unit 114 for performing step S80). The touch panel 30 displays the icons 31 to 37 and sets touch areas 41 to 47 for receiving a user's touch operation on the icons 31 to 37. The silhouette projection model creation unit 112 prepares a curved surface model 61 curved in a direction perpendicular to the display surface 71 of the touch panel 30 and projects silhouette images 62a to 62c corresponding to the icons 72a to 72c onto the curved surface model 61, respectively. Silhouette images 63a to 63c are generated, and silhouette projection models 64a to 64c are created based on these curved surface silhouette images 63a to 63c. The arranging unit 113 arranges the silhouette projection models 64a to 64c created by the silhouette projection model creating unit 112 at predetermined positions on the drawing plane 65 parallel to the display surface 71. The area setting unit 114 sets the touch areas 41 to 47 based on the silhouette projection models 64a to 64c arranged by the arranging unit 113 at predetermined positions. At this time, the area setting unit 114 sets the first silhouette projection model (silhouette projection model 64a or 64b) and the second silhouette projection model (silhouette projection model 64b or 64c) included in the silhouette projection models 64a to 64c, respectively. When overlapping, the intersection lines 66a and 66b between the first silhouette projection model and the second silhouette projection model correspond to the first touch area and the second silhouette projection model corresponding to the first silhouette projection model. The first touch area and the second touch area are set as boundaries between the first touch area and the second touch area. Since it did in this way, when setting a plurality of touch fields corresponding to a plurality of icons which adjoined mutually, a boundary of touch fields can be set up appropriately.

(2) The silhouette projection model creation unit 112 creates a plurality of silhouette projection models (silhouette projection models 64a to 64c) in the silhouette projection model creation process. In the arranging process, the arranging unit 113 arranges the plurality of silhouette projection models 64a to 64c on the drawing plane 65 with the heights of the respective vertices aligned. Since it did in this way, it can arrange|position the silhouette projection model suitable for each area|region setting part 114 to set a touch area|region in an area|region setting process with respect to the some icon 31-37 displayed on the touch panel 30. .

(3) The silhouette projection model creation unit 112 creates a plurality of silhouette projection models 64a to 64c having the same height from the bottom surface to the apex and different sizes. Since it did in this way, a silhouette projection model suitable for each of a plurality of icons 31-37 which differ in size can be created.

(4) The silhouette projection model creation unit 112 creates a plurality of silhouette projection models 64a to 64c having different sizes by enlarging the curved surface silhouette images 63a to 63c in the direction parallel to the display surface 71. Since it did in this way, a plurality of silhouette projection models from which size differs mutually can be created easily.

(5) The information device 1 includes an ID buffer 80 that stores information for drawing a display object corresponding to the image displayed on the touch panel 30, and the ID buffer 80 is connected to the control unit 10 that is a computer. ing. In the placement process, the placement unit 113 writes the information representing the silhouette projection models 64a to 64c in the memory area corresponding to a predetermined position on the drawing plane 65 in the ID buffer 80. Since it did in this way, it becomes possible to create and arrange silhouette projection models 64a-64c easily using the drawing processing function which control part 10 has.

(6) The ID buffer 80 has a depth buffer that stores the depth information of the display object. In the area setting process, the area setting unit 114 identifies the intersection lines 66a and 66b based on the depth information of the first silhouette projection model and the depth information of the second silhouette projection model stored in the ID buffer 80, respectively. To do. Since it did in this way, it becomes possible to specify the intersection lines 66a and 66b as a boundary line of a touch field easily and at high speed.

  In the embodiment of the present invention described above, the silhouette projection model creation unit 112 enlarges the curved surface silhouette images 63a to 63c in the direction parallel to the display surface 71, thereby projecting a plurality of silhouettes having different sizes. The example of creating the models 64a to 64c has been described. However, a plurality of silhouette projection models 64a to 64c having different sizes may be created by using a method other than this. Specifically, for example, the silhouette projection model creation unit 112 prepares a plurality of curved surface models having different sizes in the silhouette projection model creation process of step S30. Then, the silhouette images 62a to 62c of FIG. 4 are enlarged and projected according to the sizes of the plurality of curved surface models to generate a plurality of curved surface silhouette images 63a to 63c having different sizes. It is also possible to create a plurality of silhouette projection models 64a to 64c having different sizes by using the plurality of curved surface silhouette images 63a to 63c thus generated. In this way, the process of projecting the silhouette image onto the curved surface model to generate the curved surface silhouette image and the process of enlarging the curved surface silhouette image to create the silhouette projection model according to the touch area to be set are integrated. Then, these can be implemented by one processing. Therefore, the processing speed can be increased.

  Further, in the embodiment of the present invention described above, the silhouette projection model creation unit 112 enlarges the curved surface silhouette images 63a to 63c in the direction parallel to the display surface 71, thereby projecting a plurality of silhouettes having different sizes. The example of creating the models 64a to 64c has been described. However, on the contrary, a plurality of silhouette projection models 64a to 64c having different sizes may be created by reducing the curved surface silhouette images 63a to 63c in the direction parallel to the display surface 71. Further, when the silhouette projection models 64a to 64c are created using a plurality of curved surface models having different sizes as described above, the silhouette images 62a to 62c in FIG. The plurality of curved surface silhouette images 63a to 63c having different sizes are generated by projecting the images in accordance with the size, and the generated plurality of curved surface silhouette images 63a to 63c are used to generate a plurality of curved surface silhouette images 63a to 63c. The silhouette projection models 64a to 64c may be created. By doing so, the silhouette projection model can be created in an arbitrary size regardless of the size of the icon.

  In the above-described embodiment of the present invention, the information device 1 mounted in the vehicle has been described as an example, but the present invention is also applicable to other information devices. The present invention can be applied to any information device as long as it has a touch panel capable of displaying an icon and sets a touch area for accepting a user's touch operation on the icon on the touch panel.

  The embodiments and various modifications described above are merely examples, and the present invention is not limited to these contents unless the characteristics of the invention are impaired. Although various embodiments and modifications have been described above, the present invention is not limited to these contents. Other modes considered within the scope of the technical idea of the present invention are also included in the scope of the present invention.

  1: information device, 10: control unit, 11: touch panel control unit, 12: communication control unit, 13: navigation processing unit, 14: content processing unit, 15: current position acquisition unit, 20: storage unit, 21: map DB , 22: content DB, 30: touch panel, 40: speaker, 50: ROM, 60: RAM, 70: color buffer, 80: ID buffer, 111: display control unit, 112: silhouette projection model creation unit, 113: arrangement unit. , 114: area setting unit, 115: touch operation detecting unit

Claims (14)

A method of setting a touch area for accepting a user's touch operation on an icon displayed on the touch panel on the touch panel,
A curved surface model curved in a direction perpendicular to the display surface of the touch panel is prepared, a curved surface silhouette image is generated by projecting a silhouette image corresponding to the icon onto the curved surface model, and a silhouette projection model based on the curved surface silhouette image is generated. Silhouette projection model creation process to create,
Arrangement processing for arranging the silhouette projection model at a predetermined position on a plane parallel to the display surface,
An area setting process for setting the touch area based on the silhouette projection model arranged at the predetermined position is executed by a computer,
In the area setting process, when the first silhouette projection model and the second silhouette projection model respectively included in the silhouette projection model overlap each other, the first silhouette projection model and the second silhouette projection model An intersection line with the first touch area corresponding to the first silhouette projection model and a second touch area corresponding to the second silhouette projection model as a boundary line between the first touch area and An area setting method for setting the second touch area. In the area setting method according to claim 1,
In the silhouette projection model creation process, a plurality of the silhouette projection models are created,
In the arranging process, a region setting method in which the plurality of silhouette projection models are arranged on the plane so that the heights of the respective vertices are matched. The area setting method according to claim 2,
In the silhouette projection model creating process, a region setting method is to create a plurality of the silhouette projection models having a common height from a bottom face to a vertex and different sizes. In the area setting method according to claim 3,
In the silhouette projection model creation processing, a region setting method of creating a plurality of silhouette projection models having different sizes by enlarging or reducing the curved surface silhouette image in a direction parallel to the display surface. In the area setting method according to claim 3,
In the silhouette projection model creation process, a plurality of curved surface models having different sizes are prepared, and the silhouette image is projected by enlarging or reducing according to the size of the curved surface models. A plurality of curved surface silhouette images different from each other, and using the generated plurality of curved surface silhouette images, a plurality of silhouette projection models of different sizes are created. The area setting method according to any one of claims 1 to 5,
An ID buffer that stores information for drawing a display object corresponding to the image displayed on the touch panel is connected to the computer,
In the arrangement processing, an area setting method in which information representing the silhouette projection model is written in a memory area corresponding to the predetermined position in the ID buffer. The area setting method according to claim 6,
The ID buffer stores depth information of the display object,
In the area setting process, the area setting method of specifying the intersection line based on the depth information of the first silhouette projection model and the depth information of the second silhouette projection model, which are respectively stored in the ID buffer. .. A touch panel that displays an icon and has a touch area for receiving a touch operation by the user on the icon,
A curved surface model curved in a direction perpendicular to the display surface of the touch panel is prepared, a curved surface silhouette image is generated by projecting a silhouette image corresponding to the icon onto the curved surface model, and a silhouette projection model based on the curved surface silhouette image is generated. A silhouette projection model creation section to create,
An arrangement unit that arranges the silhouette projection model at a predetermined position on a plane parallel to the display surface,
An area setting unit that sets the touch area based on the silhouette projection model arranged at the predetermined position,
The area setting unit includes the first silhouette projection model and the second silhouette projection model when the first silhouette projection model and the second silhouette projection model respectively included in the silhouette projection model overlap each other. An intersection line with the first touch area corresponding to the first silhouette projection model and a second touch area corresponding to the second silhouette projection model as a boundary line between the first touch area and An information device for setting the second touch area. In the information device according to claim 8,
The silhouette projection model creation unit creates a plurality of the silhouette projection models,
The arranging unit is an information device, wherein the plurality of silhouette projection models are arranged on the plane such that heights of respective vertices are matched. In the information device according to claim 9,
An information device, wherein the silhouette projection model creation unit creates a plurality of silhouette projection models having a common height from a bottom surface to a vertex and different sizes. The information device according to claim 10,
An information device, wherein the silhouette projection model creation unit creates a plurality of silhouette projection models having different sizes by enlarging or reducing the curved silhouette image in a direction parallel to the display surface. The information device according to claim 10,
The silhouette projection model creation unit prepares a plurality of curved surface models having different sizes, and projects the silhouette image by enlarging or reducing it according to the size of the curved surface models. An information device that generates a plurality of curved surface silhouette images different from each other, and uses the generated plurality of curved surface silhouette images to create a plurality of silhouette projection models having different sizes. The information device according to any one of claims 8 to 12,
An ID buffer that stores information for drawing a display object corresponding to the image displayed on the touch panel,
The information device, wherein the arrangement unit writes information representing the silhouette projection model into a memory area corresponding to the predetermined position in the ID buffer. The information device according to claim 13,
The ID buffer stores depth information of the display object,
The area setting unit specifies the intersection line based on the depth information of the first silhouette projection model and the depth information of the second silhouette projection model respectively stored in the ID buffer.

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