JPWO2019016849A1 - Touch operation determination device and touch operation effectiveness determination method - Google Patents

Abstract

The touch operation determination device (30) includes a reference position setting unit (32) that determines a reference position in a space in which the touch input device (100) having the touch input surface (11) is disposed, and the touch input surface (11). A touch coordinate acquisition unit (31) that acquires coordinates indicating the position of the touch of the operator, and an effectiveness determination unit (33) that determines the effectiveness of the first touch and the second touch on the touch input surface (11). With. When the time between the first touch and the second touch is shorter than a predetermined threshold time, the effectiveness determination unit (33) determines the distance from the reference position to the position of the first touch and the reference The effectiveness of each of the first touch and the second touch is determined based on the distance from the position to the position of the second touch.

Description

  The present invention relates to a technique for preventing an erroneous operation on a touch input device.

  For example, Patent Document 1 below discloses a vehicle display device that includes two screens each functioning as a touch input surface. In the vehicle display device of Patent Document 1, when one of the two screens has a high priority, and the two screens are touched almost simultaneously by the operator, the touch on the screen with the lower priority is touched. By invalidating, incorrect operation is prevented.

JP, 2006-109505, A

  The technique of Patent Document 1 is based on the premise that there are two touch input surfaces, and cannot be applied to a touch input device having only one touch input surface. Moreover, since the determination of the effectiveness of touch depends on the priority of two screens (touch input surfaces), the determination is biased. That is, when two screens are touched almost simultaneously, the touch on a screen with a low priority is always invalidated. Therefore, it can be considered that the determination result of the effectiveness of the touch is different from the intention of the operator. Specifically, when an operator touches a screen with a high priority, if the user touches a screen with a low priority accidentally, a determination result that matches the operator's intention is obtained. If a screen with a high priority is erroneously touched when touching a screen with a low degree, the determination result is contrary to the operator's intention.

  The present invention has been made to solve the above-described problems, and can determine the effectiveness of the touch regardless of the number of touch input surfaces. Also, when there are two touch input surfaces, the effectiveness of the touch can be determined. It is an object of the present invention to provide a touch operation determination device that has no bias in determination and can perform determination according to the operator's intention.

  A touch operation determination device according to the present invention acquires a reference position setting unit that determines a reference position in a space where a touch input device having a touch input surface is arranged, and coordinates indicating the position of an operator's touch on the touch input surface. The distance from the reference position to the position of the first touch when the time between the touch coordinate acquisition unit to be performed and the time between the first touch and the second touch on the touch input surface is shorter than a predetermined threshold time And an effectiveness determination unit that determines the effectiveness of each of the first touch and the second touch based on the distance from the reference position to the position of the second touch.

  According to the present invention, when the first touch and the second touch on the touch input surface are performed almost simultaneously, the distance from the reference position to the position of the first touch and the second touch from the reference position. The effectiveness of each of the first and second touches is determined based on the distance to the position. This determination method can be applied to a touch input device having only one touch input surface. Further, when there are two touch input surfaces, it is not necessary to set a priority for each touch input surface, and there is no bias in determining the effectiveness of the touch. As a result, the determination result of the effectiveness of touch can be made more in line with the operator's intention.

  Objects, features, aspects, and advantages of the present invention will become more apparent from the following detailed description and the accompanying drawings.

3 is a functional block diagram illustrating a configuration of a touch operation system according to Embodiment 1. FIG. It is a figure which shows the example of a touch input device. It is a flowchart which shows operation | movement of a touch coordinate acquisition part. It is a flowchart which shows operation | movement of a reference position setting part and an effectiveness determination part. It is a flowchart which shows an effectiveness determination process. It is a figure which shows the example of a touch input device. It is a figure which shows the example of the hardware constitutions of a touch operation determination apparatus. It is a figure which shows the example of the hardware constitutions of a touch operation determination apparatus. 6 is a functional block diagram illustrating a configuration of a touch operation system according to Embodiment 2. FIG. 10 is a diagram for explaining an example of the operation of the touch operation system according to Embodiment 2. FIG. It is a figure which shows the example of a touch input device. 10 is a functional block diagram illustrating a configuration of a touch operation system according to Embodiment 3. FIG. It is a figure which shows the example of a touch input device. It is a figure which shows the example of a touch input device. It is a figure which shows the example of a touch input device. FIG. 10 is a functional block diagram illustrating a configuration of a touch operation system according to a fourth embodiment.

<Embodiment 1>
FIG. 1 is a functional block diagram illustrating a configuration of the touch operation system according to the first embodiment. As illustrated in FIG. 1, the touch operation system includes a touch input device 100 including a touch panel 10, a touch operation determination device 30, and an operation target device 40.

  The touch panel 10 of the touch input device 100 detects a touch input surface 11 that receives an operator's touch operation, and a touch that detects coordinates (hereinafter also referred to as “touch coordinates”) that indicate the touch position of the operator on the touch input surface 11. And a coordinate detection unit 12. Here, the indicator for the operator to touch the touch panel 10 is the operator's hand, but may be a stylus pen held by the operator in his hand, for example.

  FIG. 2 shows an example of the touch input device 100. A touch input device 100 in FIG. 2 includes a touch panel 10 having a planar touch input surface 11. FIG. 2 shows an example in which when the operator tries to touch the touch input surface 11 with the index finger of the hand 500, the thumb accidentally touches the touch input surface 11 and an erroneous touch occurs. Yes. The touch coordinate detection unit 12 detects the coordinates of the touch positions P <b> 1 and P <b> 2 of the operator's hand 500 on the touch input surface 11. An erroneous touch is caused not only by the thumb but also by a bent little finger or palm.

  Returning to FIG. 1, the touch operation determination device 30 includes a touch coordinate acquisition unit 31, a reference position setting unit 32, and an effectiveness determination unit 33.

  The touch coordinate acquisition unit 31 acquires information on presence / absence of a touch on the touch input surface 11 and information on touch coordinates from the touch coordinate detection unit 12 of the touch input device 100.

  The reference position setting unit 32 determines a “reference position” that serves as a reference for determining the effectiveness of the touch on the touch panel 10 in the space where the touch input device 100 is disposed. The reference position is an estimated position of a specific part of the operator's body. The specific part of the operator is a part of the upper body, and for example, an elbow, a shoulder, a face or a part of the face (eyes, nose, mouth, chin, etc.) is preferable. FIG. 2 shows an example in which the reference position P0 is set to the estimated position of the operator's elbow.

  The reference position setting unit 32 may estimate the position of the specific part of the actual operator based on the information on the position of the operator acquired using a camera or a sensor (not shown). The position of the specific part of the person may be estimated. That is, the specific part of the operator may be estimated assuming a general posture of the operator when the touch input device 100 is operated. In that case, it is not necessary to use a camera or a sensor, and the system can be simplified.

  For example, when the touch operation system is mounted on a vehicle and a driver of the vehicle is assumed as the operator of the touch input device 100, the reference position setting unit 32 sets the installation position of the touch input device 100 (for example, the center panel of the vehicle). ) And the position of the driver's seat, the position of the elbow, shoulder, face, etc. when the driver operates the touch input device 100 can be estimated. Further, for example, when the touch operation system is applied to a smartphone, the reference position setting unit 32 operates the touch input device 100 by assuming the posture when the operator lifts the smartphone in front of the face. It is possible to estimate the position of the elbow, shoulder, face, etc.

  The validity determination unit 33 outputs the touch coordinates acquired by the touch coordinate acquisition unit 31 to the operation target device 40 that is a target of the touch operation. However, the validity determination unit 33 has a case in which the time between the first touch and the second touch, which are two touches performed consecutively, is shorter than a predetermined threshold time (that is, the first touch). When the touch and the second touch are performed almost simultaneously, the effectiveness of each of the first and second touches is determined, and only the coordinates indicating the touch position determined to be valid are operated. Output to the target device 40.

  Specifically, the effectiveness determination unit 33 determines the distance from the reference position (estimated position of the operator's elbow, shoulder, face, etc.) set by the reference position setting unit 32 to the position of the first touch, and The effectiveness of the first and second touches is determined based on the distance from the reference position to the position of the second touch. Generally, an operator of a touch panel tends to touch a touch input surface using a part close to the tip of the hand, such as the tip of a finger, so that the movement of the hand required for the touch operation can be reduced. Therefore, the effectiveness determination unit 33 compares the distance from the reference position to the position of the first touch and the distance from the reference position to the position of the second touch. It is determined that a touch far from the reference position is valid and a touch closer to the reference position is invalid.

  For example, in FIG. 2, it is assumed that a touch on the touch input surface 11 performed with the index finger of the operator's hand 500 is a first touch, and a touch (erroneous touch) on the touch input surface 11 performed with a thumb is a second touch. To do. In this case, the validity determination unit 33 compares the distance L1 from the reference position P0 to the first touch position P1 with the distance L2 from the reference position P0 to the second touch position P2. In the example of FIG. 2, since the distance L1 is larger than the distance L2, the validity determination unit 33 validates the first touch made with the index finger and invalidates the second touch made with the thumb (erroneous touch). And only the coordinates of the first touch are output to the operation target device 40. Thereby, generation | occurrence | production of the malfunctioning by the 2nd touch which is an erroneous touch is prevented.

  When the distance L1 from the reference position P0 to the first touch position P1 and the distance L2 from the reference position P0 to the second touch position P2 are equal, the validity determination unit 33 Either the touch or the second touch may be invalidated. For example, when the distance L1 and the distance L2 are equal, it may be specified that the first touch performed in the first and second touches becomes invalid, or the one performed later becomes invalid. It may be specified that

  Here, the operation target device 40 illustrated in FIG. 1 may be any device as long as it can be a target of a touch operation using the touch input device 100. For example, when the touch operation system is mounted on a vehicle, the operation target device 40 may be a navigation device, an audio display device, or the like.

  In FIG. 1, the touch input device 100, the touch operation determination device 30, and the operation target device 40 are illustrated as individual blocks, but two or more of them may be integrally configured. For example, the touch input device 100 may incorporate the touch operation determination device 30. When the touch operation system is applied to a portable device such as a smartphone, the touch input device 100, the touch operation determination device 30, and the operation target device 40 are all housed in a single housing and integrated. It becomes.

  Hereinafter, the operation of each element of the touch operation determination device 30 will be described based on the flowcharts of FIGS.

  FIG. 3 is a flowchart showing the operation of the touch coordinate acquisition unit 31. The operation of the touch coordinate acquisition unit 31 will be described based on FIG.

  First, the touch coordinate acquisition unit 31 determines whether or not the operator touches the touch input surface 11 based on the output signal of the touch coordinate detection unit 12 (step S101). If the touch input surface 11 is not touched (NO in step S101), step S101 is repeated. When the touch input surface 11 is touched (YES in step S101), the touch coordinate acquisition unit 31 acquires coordinates (touch coordinates) indicating the position of the touch from the touch coordinate detection unit 12 (step S102). Then, the touch coordinate acquisition unit 31 transmits the acquired touch coordinates to the validity determination unit 33 (step S103), and returns to step S101.

  In the following description, for the sake of simplicity, the time difference from when the touch input surface 11 is touched until the touch coordinates indicating the position are received by the validity determination unit 33 is ignored. That is, it is considered that the touch coordinates are received by the validity determination unit 33 at the same time that the touch input surface 11 is touched.

  FIG. 4 is a flowchart showing the operations of the reference position setting unit 32 and the validity determination unit 33. The operations of the reference position setting unit 32 and the validity determination unit 33 will be described with reference to FIG.

  First, the reference position setting unit 32 determines a reference position serving as a reference for determining the effectiveness of the touch on the touch panel 10 in the space where the touch input device 100 is disposed (step S201).

  Next, the validity determination unit 33 checks whether or not the touch coordinates have been received from the touch coordinate acquisition unit 31 (step S202). While the touch input surface 11 is not touched by the operator, the touch coordinates are not received by the validity determination unit 33 (NO in step S202), and step S202 is repeatedly executed.

  If the touch input surface 11 is touched by the operator, the touch coordinates are received by the validity determination unit 33 (YES in step S202). In this case, the validity determination unit 33 confirms whether or not touch coordinates indicating another touch position are received until the threshold time elapses after reception of the touch coordinates (step S203).

  If the validity determination unit 33 does not receive touch coordinates of another touch in step S203 (NO in step S203), the validity determination unit 33 outputs the touch coordinates received in step S202 to the operation target device 40 (step S204). However, if the validity determination unit 33 receives the touch coordinates of another touch in step S203 (YES in step S203), the validity determination unit 33 determines the validity of each of the two touches corresponding to each touch coordinate received in steps S202 and S203. A “validity determination process” for determination is executed (step S205). Hereinafter, one of the two touches is referred to as a “first touch” and the other is referred to as a “second touch”.

  FIG. 5 is a flowchart showing the validity determination process. In the validity determination process, first, the validity determination unit 33 calculates a distance from the reference position to the position of the first touch (hereinafter referred to as “first touch distance”) (step S301). Further, the effectiveness determination unit 33 calculates a distance from the reference position to the position of the second touch (hereinafter referred to as “second touch distance”) (step S302).

  Next, the effectiveness determination unit 33 compares the first touch distance calculated in step S301 with the second touch distance calculated in step S302 (step S303). As a result, if the first touch distance is greater (YES in step S304), the validity determination unit 33 determines that the first touch is valid and the second touch is invalid (step S305). Only the touch coordinates of one touch are output to the operation target device 40 (step S306). On the other hand, if the second touch distance is greater (NO in step S304), the validity determination unit 33 determines that the second touch is valid and the first touch is invalid (step S307), and the second touch distance is determined. Only the touch coordinates of the touch are output to the operation target device 40 (step S308).

  Referring to FIG. 4 again, after step S204 or step S205 is performed, the process returns to step S202.

  FIG. 4 illustrates an example in which the step S201 in which the touch coordinate acquisition unit 31 sets the reference position is performed only once. For example, the position of the specific part of the operator as the reference position using a camera or a sensor, for example. When estimating the reference position, it is necessary to appropriately update the reference position. Therefore, in this case, it is preferable to return to step S201 when NO is determined in step S202 or after step S204 or step S205.

  As described above, according to the touch operation determination device 30 according to the first embodiment, when the first touch and the second touch are performed almost simultaneously, the operation from the reference position to the position of the first touch is performed. The effectiveness of each of the first touch and the second touch is determined based on the distance and the distance from the reference position to the position of the second touch (that is, the first touch distance and the second touch distance). The Accordingly, it is possible to determine the effectiveness of touch according to the intention of the operator.

  2 shows the touch input device 100 having the flat touch input surface 11, the touch input surface 11 of the touch input device 100 may be curved as shown in FIG. 6, for example. In the case where the touch input surface 11 has a curved surface shape, an erroneous touch in which the user's finger mistakenly touches the touch input surface 11 is likely to occur. Therefore, application of the present invention is effective.

  7 and 8 are diagrams each illustrating an example of a hardware configuration of the touch operation determination device 30. Each element (touch coordinate acquisition unit 31, reference position setting unit 32, and effectiveness determination unit 33) of the touch operation determination device 30 illustrated in FIG. 1 is realized by, for example, the processing circuit 50 illustrated in FIG. That is, the processing circuit 50 determines the reference position setting unit 32 that determines the reference position in the space where the touch input device 100 having the touch input surface 11 is arranged, and coordinates indicating the position of the operator's touch on the touch input surface 11. The position of the first touch from the reference position when the time between the touch coordinate acquisition unit 31 to be acquired and the first touch and the second touch on the touch input surface 11 is shorter than a predetermined threshold time. And an effectiveness determination unit 33 that determines the effectiveness of each of the first touch and the second touch based on the distance from the reference position to the position of the second touch. Dedicated hardware may be applied to the processing circuit 50, or a processor (a central processing unit (CPU), a processing device, an arithmetic device, a microprocessor, a micro processor) that executes a program stored in a memory A computer or a DSP (Digital Signal Processor) may also be applied.

  When the processing circuit 50 is dedicated hardware, the processing circuit 50 includes, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), and an FPGA (Field-Programmable). Gate Array) or a combination of these. Each function of each element of the touch operation determination device 30 may be realized by a plurality of processing circuits, or these functions may be realized by a single processing circuit.

  FIG. 8 shows a hardware configuration of the touch operation determination device 30 when the processing circuit 50 is configured using a processor. In this case, the function of each element of the touch operation determination device 30 is realized by a combination of software and the like (software, firmware, or software and firmware). Software or the like is described as a program and stored in the memory 52. The processor 51 as the processing circuit 50 implements the functions of the respective units by reading out and executing the program stored in the memory 52. That is, when the touch operation determination device 30 is executed by the processing circuit 50, the touch operation determination device 30 determines the reference position in the space where the touch input device 100 having the touch input surface 11 is arranged, and the operator for the touch input surface 11 When the time between the first touch and the second touch on the touch input surface 11 is shorter than a predetermined threshold time, the first position from the reference position is acquired. And determining the effectiveness of each of the first touch and the second touch based on the distance to the position of the touch and the distance from the reference position to the position of the second touch. A memory 52 for storing the program to be stored is provided. In other words, it can be said that this program causes the computer to execute the operation procedure and method of each element of the touch operation determination device 30.

  Here, the memory 52 is nonvolatile or non-volatile such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable Read Only Memory), EEPROM (Electrically Erasable Programmable Read Only Memory), or the like. Volatile semiconductor memory, HDD (Hard Disk Drive), magnetic disk, flexible disk, optical disk, compact disk, mini disk, DVD (Digital Versatile Disc) and its drive device, etc., or any storage media used in the future May be.

  The configuration in which the function of each element of the touch operation determination device 30 is realized with either hardware or software has been described above. However, the present invention is not limited to this, and a configuration may be adopted in which some elements of the touch operation determination device 30 are realized by dedicated hardware and another part is realized by software or the like. For example, the functions of some elements are realized by the processing circuit 50 as dedicated hardware, and the processing circuit 50 as the processor 51 reads a program stored in the memory 52 for the other some elements. The function can be realized by executing.

  As described above, the touch operation determination device 30 can realize the functions described above by hardware, software, or the like, or a combination thereof.

<Embodiment 2>
FIG. 9 is a functional block diagram illustrating a configuration of the touch operation system according to the second embodiment. The touch operation system of FIG. 9 has a configuration in which a display screen 13 is added to the touch input device 100 and a display control unit 34 is added to the touch operation determination device 30 with respect to the configuration of FIG.

  The display screen 13 of the touch input device 100 is, for example, a liquid crystal display device. The touch input surface 11 of the touch panel 10 is transparent and is disposed on the display screen 13. That is, the touch panel 10 and the display screen 13 constitute a touch panel monitor having both an image display function and a touch operation function.

  The display control unit 34 of the touch operation determination device 30 causes the display screen 13 to display an image by inputting the video signal output from the operation target device 40 to the display screen 13.

  As described above, the present invention can also be applied to the touch input device 100 including the touch panel monitor.

  For example, when the operation target device 40 executes a plurality of applications, an operation window for two applications may be simultaneously displayed on the touch panel monitor including the touch panel 10 and the display screen 13. In this case, two touch input areas are defined on the touch input surface 11 in accordance with the position of each operation window.

  In FIG. 10, a first touch input area 11a for operating the first application and a second touch input area 11b for operating the second application are defined on the touch input surface 11. Indicates the state. For example, a configuration is conceivable in which the first touch input area 11a is used for the operation of the navigation application, and the second touch input area 11b is used for the operation of the application for reproducing video and music.

  Normally, it is difficult for a user to operate two applications at the same time. Therefore, in the state shown in FIG. 10, the touch operation determination device 30 performs two touches performed on the touch input surface 11 almost simultaneously, that is, the first touch and the second touch are the first touch input. Only when it is performed so as to straddle the region 11a and the second touch input region 11b, one of them may be regarded as an erroneous touch. That is, only when the first touch is made on one of the first touch input area 11a and the second touch input area 11b and the second touch is made on the other, the validity determination process (FIG. 5). May be performed.

  Of course, the first touch input area 11a and the second touch input area 11b may be used for the operation of the same application. That is, the first touch input area 11a and the second touch input area 11b may be used for operations with different attributes of the same application. For example, a configuration is conceivable in which the first touch input area 11a is used for a map operation of a navigation application, and the second touch input area 11b is used for a facility search operation of the application.

  Further, the operation target device 40 may be plural. In this case, the first touch input area 11a and the second touch input area 11b may be used for operations on different operation target devices 40, respectively. For example, a configuration in which the first touch input area 11a is used for operation of the navigation device and the touch input surface 11 is used for operation of the operation screen of the audio display device is conceivable.

  FIG. 10 shows an example in which the first touch input area 11a and the second touch input area 11b are defined on the planar touch input surface 11. However, as shown in FIG. The surface 11 may be curved.

  FIGS. 10 and 11 show an example in which the first touch input area 11a and the second touch input area 11b are arranged side by side, but they may be arranged side by side.

<Embodiment 3>
FIG. 12 is a functional block diagram illustrating the configuration of the touch operation system according to the third embodiment. In the touch operation system according to the third embodiment, the touch input device 100 includes a first touch panel 110 and a second touch panel 210.

  The first touch panel 110 includes a first touch input surface 111 that accepts an operator's touch operation, and a first touch coordinate detection unit 112 that detects coordinates indicating the touch position of the operator on the first touch input surface 111. And. Similarly, the second touch panel 210 includes a second touch input surface 211 that accepts an operator's touch operation, and second touch coordinates that detect coordinates indicating the touch position of the operator on the second touch input surface 211. And a detection unit 212.

  FIG. 13 shows an example of the touch input device 100. A touch input device 100 in FIG. 13 includes a first touch panel 110 having a planar first touch input surface 111 and a second touch panel 210 having a planar second touch input surface 211. . The first touch input surface 111 and the second touch input surface 211 form an angle of less than 180 °.

  Also, FIG. 13 shows that when the operator tries to touch the first touch input surface 111 with the index finger of the hand 500, the thumb mistakenly touches the second touch input surface 211, resulting in an erroneous touch. An example is shown. The first touch coordinate detection unit 112 detects the coordinates of the touch position P <b> 1 of the operator's hand 500 on the first touch input surface 111. The second touch coordinate detection unit 212 detects the coordinates of the touch position P <b> 2 of the operator's hand 500 on the second touch input surface 211. When the first touch input surface 111 and the second touch input surface 211 form an angle of less than 180 °, the erroneous touch as described above is likely to occur.

  As shown in FIG. 12, the touch operation determination device 30 according to the third embodiment includes a first touch coordinate acquisition unit 131, a second touch coordinate acquisition unit 231, a reference position setting unit 32, and an effectiveness determination unit. 33.

  The first touch coordinate acquisition unit 131 acquires from the first touch coordinate detection unit 112 the presence / absence of the operator's touch on the first touch input surface 111 and information on the touch coordinates. The second touch coordinate acquisition unit 231 acquires from the second touch coordinate detection unit 212 information on presence / absence of an operator's touch on the second touch input surface 211 and information on the touch coordinates. Each operation of the first touch coordinate acquisition unit 131 and the second touch coordinate acquisition unit 231 is the same as the operation (FIG. 3) of the touch coordinate acquisition unit 31 of the first embodiment.

  As in the first embodiment, the reference position setting unit 32 has a reference position (an operator's elbow, shoulder, and the like) serving as a reference for determining the effectiveness of the touch on the touch panel 10 in the space where the touch input device 100 is disposed. Estimated position of face etc.).

  The validity determination unit 33 outputs the touch coordinates acquired by the first touch coordinate acquisition unit 131 and the second touch coordinate acquisition unit 231 to the operation target device 40 that is the target of the touch operation. However, the validity determination unit 33 has a case in which the time between the first touch and the second touch, which are two touches performed consecutively, is shorter than a predetermined threshold time (that is, the first touch). When the touch and the second touch are performed almost simultaneously, the effectiveness of each of the first and second touches is determined, and only the coordinates indicating the touch position determined to be valid are operated. Output to the target device 40. Specifically, the validity determination unit 33 compares the distance from the reference position to the position of the first touch with the distance from the reference position to the position of the second touch, and compares the distance from the reference position to the position of the second touch. Of the touches, the touch far from the reference position is determined to be valid, and the near touch is determined to be invalid. Specific operations of the reference position setting unit 32 and the validity determination unit 33 may be the same as those in the first embodiment (FIGS. 4 and 5).

  Note that the first touch and the second touch may be performed on either the first touch input surface 111 or the second touch input surface 211. That is, both the first and second touches may be performed on either the first touch input surface 111 or the second touch input surface 211, or the first touch input surface 111 and The first touch may be performed on one side of the second touch input surface 211 and the second touch may be performed on the other side.

  According to the touch operation determination device 30 of the third embodiment, the first touch and the second touch are applied to the touch input device 100 having the first touch input surface 111 and the second touch input surface 211 almost simultaneously. When performed, the effectiveness of each of the first touch and the second touch is determined based on the distance from the reference position. Therefore, it is not necessary to set priorities of the first touch input surface and the second touch input surface, and there is no bias in determining the effectiveness of touch. Therefore, determination of the effectiveness of touch can be made more in line with the operator's intention.

  As described above, the present invention can also be applied to the touch input device 100 including two touch input surfaces. However, it is usually difficult for a user to operate two touch input surfaces at the same time. Therefore, in the touch operation determination device 30, two touches performed almost simultaneously, that is, the first touch and the second touch straddle the first touch input surface 111 and the second touch input surface 211. Only when it is performed in this way, one of them may be regarded as an erroneous touch. That is, only when the first touch is made on one of the first touch input surface 111 and the second touch input surface 211 and the second touch is made on the other, the validity determination process (FIG. 5). May be performed.

  FIG. 13 shows an example in which the first touch input surface 111 and the second touch input surface 211 form an angle of 180 ° or less. However, as shown in FIG. The touch input surface 211 may be arranged flat (that is, the angle formed by the first touch input surface 111 and the second touch input surface 211 is 180 °). The present invention can also be applied to the case where the first touch input surface 111 and the second touch input surface 211 form an angle larger than 180 °.

  Further, at least one of the first touch input surface 111 and the second touch input surface 211 may be curved. FIG. 15 shows an example in which both the first touch input surface 111 and the second touch input surface 211 are curved. When the first touch input surface 111 and the second touch input surface 211 are curved, the user's finger mistakenly touches the first touch input surface 111 or the second touch input surface 211. Since the touch is likely to occur, the application of the present invention is effective.

  Although FIG. 13, FIG. 14 and FIG. 15 show an example in which the first touch input surface 111 and the second touch input surface 211 are arranged side by side, they may be arranged side by side. .

<Embodiment 4>
In the fourth embodiment, the second embodiment is applied to the touch operation system of the third embodiment. FIG. 16 is a functional block diagram illustrating a configuration of the touch operation system according to the fourth embodiment. The touch operation system of FIG. 16 adds a first display screen 113 and a second display screen 213 to the touch input device 100 and displays them on the touch operation determination device 30 with respect to the configuration of FIG. 12 (Embodiment 3). A control unit 34 is added.

  The first display screen 113 and the second display screen 213 of the touch input device 100 are, for example, liquid crystal display devices. The first touch input surface 111 and the second touch input surface 211 are transparent, and are disposed on the first display screen 113 and the second display screen 213, respectively. That is, the first touch panel 110 and the first display screen 113 constitute a touch panel monitor. Similarly, the second touch panel 210 and the second display screen 213 also constitute a touch panel monitor.

  The display control unit 34 of the touch operation determination device 30 inputs the video signal output from the operation target device 40 to the first display screen 113 and the second display screen 213, so that the first display screen 113 and the second display screen 213 are input. An image is displayed on the display screen 213.

  As described above, the present invention can also be applied to the touch input device 100 including two touch panel monitors.

  Also in the present embodiment, each of the first touch and the second touch that are continuously performed may be performed on either the first touch input surface 111 or the second touch input surface 211. . However, it is difficult for the user to operate the touch panel monitor at the same time. Therefore, the touch operation determination device 30 is limited to the case where the first touch and the second touch are performed so as to straddle the first touch input surface 111 and the second touch input surface 211. One of them may be regarded as an erroneous touch.

  Also in this embodiment, the angle formed by the first touch input surface 111 and the second touch input surface 211 may be an arbitrary angle. Further, at least one of the first touch input surface 111 and the second touch input surface 211 may be curved. Further, the touch input device 100 may be provided with only one of the first display screen 113 and the second display screen 213.

<Example of change>
[Modification 1]
As the touch input device 100, a device capable of a non-contact gesture operation that allows an operator to input an operation without directly touching the touch input surface is also assumed. It is unlikely that a normal (contact) touch operation is performed while the operator performs a non-contact gesture operation. Therefore, while the non-contact gesture operation is performed by the operator, the validity determination unit 33 performs the touch input surface (the touch input surface 11 of the first and second embodiments, or the third and fourth embodiments). All the touches on the first touch input surface 111 and the second touch input surface 211) may be invalidated.

  Accordingly, even if the operator touches the touch input surface in the middle of the non-contact gesture, the touch is invalidated, so that an erroneous operation is prevented.

[Modification 2]
It is unlikely that the operator performs another touch operation while performing an operation (for example, a drag operation) that involves movement of touch coordinates. Therefore, the second touch performed while the touch coordinates of the first touch are moving and the first touch performed while the touch coordinates of the second touch are moved are the reference Regardless of the distance from the position, the validity determination unit 33 may invalidate it.

[Modification 3]
When the touch operation system is mounted on the vehicle, the “threshold time” (threshold of the time difference between the first touch and the second touch), which is a criterion for determining whether or not to perform the effectiveness determination process, You may change according to the driving | running | working state. For example, when the vehicle is running, an erroneous touch is likely to occur due to the shaking of the vehicle, and therefore it is preferable to increase the detection sensitivity of the erroneous touch by increasing the threshold time.

  Further, the threshold time may be changed according to the traveling speed of the vehicle. For example, the faster the traveling speed of the vehicle, the more difficult it is for the operator (driver) to turn his attention to the operation of the touch input device 100, and an erroneous touch is more likely to occur. Therefore, it is preferable to increase the detection sensitivity of erroneous touches by increasing the threshold time as the traveling speed of the vehicle increases.

  It should be noted that the present invention can be freely combined with each other within the scope of the invention, and each embodiment can be appropriately modified or omitted.

  Although the present invention has been described in detail, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 100 Touch input device, 10 Touch panel, 11 Touch input surface, 11a 1st touch input area, 11b 2nd touch input area, 12 Touch coordinate detection part, 13 Display screen, 110 1st touch panel, 111 1st touch Input surface, 112 first touch coordinate detection unit, 113 first display screen, 210 second touch panel, 211 second touch input surface, 212 second touch coordinate detection unit, 213 second display screen, 30 Touch operation determination device, 31 touch coordinate acquisition unit, 131 first touch coordinate acquisition unit, 231 second touch coordinate acquisition unit, 32 reference position setting unit, 33 validity determination unit, 34 display control unit, 40 operation target device , 500 Operator's hand.

Claims (23)

A reference position setting unit for determining a reference position in a space where a touch input device having a touch input surface is arranged;
A touch coordinate acquisition unit that acquires coordinates indicating the position of the operator's touch on the touch input surface;
The distance from the reference position to the position of the first touch and the reference position when the time between the first touch and the second touch on the touch input surface is shorter than a predetermined threshold time An effectiveness determination unit that determines the effectiveness of each of the first touch and the second touch based on a distance from a position to the position of the second touch.
Touch operation determination device. The effectiveness determination unit determines that one of the first touch and the second touch far from the reference position is valid, and the near one is invalid.
The touch operation determination device according to claim 1. A first touch input area and a second touch input area are defined on the touch input surface;
The first touch is a touch on one of the first touch input area and the second touch input area, and the second touch is the first touch input area and the second touch input. A touch on the other side of the area,
The touch operation determination device according to claim 1. The effectiveness determination unit determines that one of the first touch and the second touch far from the reference position is valid, and the near one is invalid.
The touch operation determination device according to claim 3. The touch input device has a first touch input surface and a second touch input surface as the touch input surface,
The first touch is a touch on one of the first touch input surface and the second touch input surface, and the second touch is the first touch input surface and the second touch input. A touch on the other side of the surface,
The touch operation determination device according to claim 1. The effectiveness determination unit determines that one of the first touch and the second touch far from the reference position is valid, and the near one is invalid.
The touch operation determination device according to claim 5. The reference position is an estimated position of a specific part of the operator's body.
The touch operation determination device according to claim 1. The specific part of the operator's body serving as the reference position is a part of the upper body of the operator.
The touch operation determination device according to claim 7. The specific part of the operator's body serving as the reference position is the operator's elbow, shoulder, face or part of the face.
The touch operation determination device according to claim 8. The reference position setting unit estimates a position of a specific part of the operator's body based on information on the position of the operator acquired using a camera or a sensor.
The touch operation determination device according to claim 7. The validity determination unit invalidates all touches on the touch input surface while a non-contact gesture operation is performed on the touch input surface.
The touch operation determination device according to claim 1. The validity determination unit includes the second touch performed while the coordinates of the first touch are moving, and the second touch performed while the coordinates of the second touch are moved. Disabling the first touch regardless of the distance from the reference position of the position of the first touch and the position of the second touch;
The touch operation determination device according to claim 1. The touch input device is mounted on a vehicle,
The effectiveness determination unit changes the threshold time according to a traveling state of the vehicle.
The touch operation determination device according to claim 1. The touch input surface is curved.
The touch operation determination device according to claim 1. The touch input surface is disposed on a display screen.
The touch operation determination device according to claim 1. The first touch input area and the second touch input area are arranged vertically.
The touch operation determination device according to claim 3. The first touch input area and the second touch input area are arranged side by side,
The touch operation determination device according to claim 3. The first touch input surface and the second touch input surface are arranged one above the other,
The touch operation determination device according to claim 5. The first touch input surface and the second touch input surface are arranged side by side;
The touch operation determination device according to claim 5. The angle formed by the first touch input surface and the second touch input surface is less than 180 °.
The touch operation determination device according to claim 5. At least one of the first touch input surface and the second touch input surface is curved.
The touch operation determination device according to claim 5. At least one of the first touch input surface and the second touch input surface is disposed on a display screen.
The touch operation determination device according to claim 5. A method for determining the effectiveness of a touch operation in a touch operation determination device,
The reference position setting unit of the touch operation determination device determines a reference position in a space where a touch input device having a touch input surface is arranged,
The touch coordinate acquisition unit of the touch operation determination device acquires coordinates indicating the position of the operator's touch on the touch input surface,
When the time between the first touch and the second touch with respect to the touch input surface is shorter than a predetermined threshold time, the validity determination unit of the touch operation determination device determines whether the first from the reference position Determining the effectiveness of each of the first touch and the second touch based on a distance to the position of the first touch and a distance from the reference position to the position of the second touch;
How to determine the effectiveness of touch operations.

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