JP2013228881A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device in which the detecting accuracy of the position of a contact of a contact detection section is improved.SOLUTION: In an electronic device 1 including a contact detection section 40 for detecting a contact and a control section 10 for acquiring the position of the contact, the control section 10 is configured to, when the variation of the position of a contact to be acquired within a predetermined time in which the contact is detected by the contact detection section 40 is within a predetermined range, set the position calculated on the basis of the acquired position of the contact to the position of the contact detected by the contact detection section 40, and to, when the variation of the position to be acquired within the predetermined time in which the contact is detected by the contact detection section 40 is beyond the predetermine range, set the calculated position to the position of the contact detected by the contact detection section 40.

Description

  The present invention relates to an electronic device. More specifically, the present invention relates to an electronic device that performs predetermined processing such as executing application software based on an operation on a touch detection unit such as a touch sensor.

  In recent years, electronic devices including a touch sensor such as a touch panel or a touch switch as a member for detecting an operation by an operator in a mobile terminal such as a mobile phone are increasing. In addition to portable terminals, electronic devices including touch sensors, such as devices such as calculators and ticket machines, household appliances such as microwave ovens, televisions, and lighting devices, and industrial devices (FA devices) are widely used.

  As such a touch sensor, various systems such as a resistive film system, a capacitance system, and an optical system are known. Both types of touch sensors detect contact with an operator's finger or stylus pen. In general, an electronic device including a touch sensor displays an image (hereinafter, referred to as “object”) such as operation keys and buttons on a display screen of a display unit disposed on the back side of the touch sensor. In such an electronic device, when an operator presses an object displayed on a display screen, a touch sensor detects contact at the pressed position.

  Conventionally, various touch sensors have been proposed (see, for example, Patent Document 1). This Patent Document 1 proposes an analog type resistive touch panel that can be miniaturized at a low production cost. A touch panel as described in Patent Document 1 is composed of two conductive films that are slightly spaced by spacers. This touch panel is configured to read a position where the conductive film is pressed and in contact with the other conductive film as a voltage by a voltage gradient applied to the one conductive film.

  By the way, many electronic devices including the touch sensor as described above perform predetermined different processing depending on the position of contact detected by the touch sensor. That is, in many cases, different processes are assigned to the touch sensors corresponding to the object areas displayed on the display unit. For example, when contact is detected with a touch sensor at a position corresponding to a menu button object, such an electronic device displays a menu screen or detects contact with a touch sensor at a position corresponding to a direction key object. If you do, move the cursor. Thus, for example, when distinguishing processes to be started in response to operations on a plurality of objects, when the touch sensor detects a contact, the accuracy of detecting the position of the contact is extremely important. In view of this, there has also been proposed a technique for accurately detecting the position of the contact when the position of the contact is detected using a touch sensor (see, for example, Patent Document 2).

  In the touch panel device described in Patent Document 2, even if a voltage drop depending on the resistance value of one of the two conductive films constituting the touch panel occurs, the detection result of the contact position is not affected. That is, the influence of the voltage drop in one of the two conductive films can be eliminated from the contact position detection result. Therefore, the pressed position can be specified accurately.

JP 2003-241898 A JP 2005-275934 A

  By the way, the touch panel device described in Patent Document 2 assumes that the position of a contact point obtained on the touch panel is detected by the contact of a pointer member such as a stylus pen. However, many touch panel devices provided in portable terminals that have been widely used in recent years assume that an operator directly operates with his / her finger without using a stylus pen or the like. When the operator performs an operation on the touch sensor with a finger, unlike the case where a tapered member such as a stylus pen is used, the position of contact detected by the touch sensor has a certain area. As described above, when the touch sensor is brought into contact with a relatively large area, a portion where the two conductive films are connected is increased. When the part touched on the touch sensor has a certain area, the contact position detected by the touch sensor is one of the touched parts, so the detected contact position is a predetermined area. It comes to vary within. For this reason, the distribution of the resistance value in the conductive film is partially non-uniform, and the accuracy with which the touch sensor detects the position of contact decreases.

  Hereinafter, a state when detecting an operator's contact in a conventional touch sensor will be described. FIG. 6 is a schematic view of a touch sensor 400 in a conventional touch panel device as viewed from the front. As shown in FIG. 6, in order to detect a position in the touch sensor 400, an xy coordinate system is virtually defined.

  In such a state, when the operator touches the surface of the touch sensor 400 with his / her finger, the portion where the operator's finger contacts the touch sensor 400 has an area α as shown in the figure. . When the contacted part has an area, the contact position detected by the touch sensor 400 in a predetermined short time varies over a certain area as indicated by a cross mark in the drawing. In addition, when a contact position is detected using such a touch sensor, as shown in the figure, the position of the contact is detected even at a location slightly outside (extruded) from the area α that is actually in contact. . That is, even in a place where the operator does not actually touch the touch sensor 400, variation in the contact position is seen. This is because the area where the conductive films of the touch sensor 400 contact each other is slightly larger than the area where the operator's finger touches the touch sensor 400. Hereinafter, such a phenomenon will be further described.

  FIG. 7 is a cross-sectional view of a main part of the touch sensor 400 in the conventional touch panel device described in FIG. As shown in FIG. 7A, the touch sensor 400 includes an upper conductive film 400a and a lower conductive film 400b. When the operator presses the upper conductive film 400a from above with a finger, the upper conductive film 400a bends and contacts the lower conductive film 400b as shown in FIG. 7B. Although the operator's finger is in contact with the upper conductive film 400a only in the area α, as shown in the figure, the conductive film 400a around the area α is also bent at the same time. The area β in contact with the lower conductive film 400b is larger than the area α. Accordingly, in this case, the position of the contact detected by the touch sensor 400 is any position within the area β, and the position of the contact varies within the area β.

  As described above, when the contact position varies, even if the operator intends to touch the touch sensor at the position corresponding to the predetermined object, the contact is detected at a position different from the object. Inconvenience arises. Such variation in the contact position becomes even more remarkable when the operator presses the touch sensor with a strong pressing force because the contact area of the conductive film becomes larger. When the pressing force by the operator is relatively strong, the lower conductive film 400b may be slightly bent due to the upper conductive film 400a pressing the lower conductive film 400b. In such a case, the position of contact detected by the touch sensor 400 may vary in a more complicated manner. Furthermore, such variations in the contact position are also affected by various factors such as the configuration of the touch sensor and the mode in which the conductive film is disposed in a housing or the like.

  Therefore, the objective of this invention made | formed in view of this situation is providing the electronic device which improves the precision with which a contact detection part detects the position of a contact.

The invention according to the first aspect to achieve the above object is
A contact detector for detecting contact;
A control unit for acquiring a position of contact detected by the contact detection unit;
An electronic device comprising:
The controller is
If the variation of the contact position acquired within a predetermined time during which the contact detection unit detects the contact is within a predetermined range, the contact detection unit calculates the position calculated based on the acquired contact position. The position of the contact to detect,
When the variation in the position of the contact acquired within a predetermined time when the contact detection unit detects the contact exceeds a predetermined range, the calculated position is set as the contact position detected by the contact detection unit. It is characterized by controlling.

The invention according to a second aspect is the electronic device according to the first aspect,
A storage unit that stores a position calculated based on the acquired position of contact when a variation in the position of the contact acquired within a predetermined time during which the contact detection unit detects contact is within a predetermined range Further comprising
The control unit detects the position stored in the storage unit when the variation in the position of the contact acquired within a predetermined time during which the contact detection unit detects contact exceeds a predetermined range. It is controlled so as to be the position of contact.

The invention according to a third aspect is the electronic device according to the second aspect,
The control unit calculates, based on the acquired position of the contact, when a variation in the position of the contact acquired within a predetermined time when the contact detection unit detects the contact exceeds a predetermined range. If the position is displaced beyond a predetermined distance, control is performed so that the position stored in the storage unit based on the displacement is the contact position detected by the contact detection unit.

  ADVANTAGE OF THE INVENTION According to this invention, the precision which a contact detection part detects the position of a contact in an electronic device can be improved.

It is a functional block diagram which shows schematic structure of the electronic device which concerns on 1st Embodiment of this invention. It is a flowchart explaining the process of the electronic device which concerns on 1st Embodiment. It is a figure explaining the process of the electronic device which concerns on 1st Embodiment. It is a flowchart explaining the process of the electronic device which concerns on 2nd Embodiment. It is a figure explaining the process of the electronic device which concerns on 2nd Embodiment. It is a figure explaining the position of the contact detected in the conventional touch sensor. It is a figure explaining a mode when a contact is detected in the conventional touch sensor.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an electronic apparatus according to the first embodiment of the present invention. As illustrated in FIG. 1, the electronic device 1 according to the first embodiment includes a control unit 10, a display unit 30, a contact detection unit 40, a vibration unit 50, and a storage unit 80.

  The control unit 10 controls and manages the entire electronic device 1 by controlling each functional unit constituting the electronic device 1. The control unit 10 also has a function of performing various calculations related to the control and a function of calculating various values based on data detected by an element having a detection function. Among the processes performed by the control unit 10, those unique to the present embodiment will be described later.

  The display unit 30 displays various information, and displays an object such as a push button switch (push button switch) as an image. This object is an image that suggests to the operator a region to be touched on the touch surface of the contact detection unit 40. The push button switch is a button, key or the like (hereinafter simply referred to as “key or the like”) used by the operator for operation. The display unit 30 is configured using, for example, a liquid crystal display panel (LCD), an organic EL display panel, or the like.

  The contact detection unit 40 is normally arranged on the front side of the display unit 30 and makes contact with an object displayed on the display unit 30 by an operator's finger, stylus pen, or the like (hereinafter simply referred to as “contact object”). , Detection is performed on the touch surface of the contact detection unit 40 at the corresponding position. Moreover, the contact detection part 40 can detect the contact position of the contact object with respect to a touch surface, and can output the position of the detected contact. With such an output, the control unit 10 can acquire the position of the contact detected by the contact detection unit 40. As the contact detection unit 40, for example, a touch sensor configured by a resistance film method, a capacitance method, an optical method, or the like can be used.

  The vibration unit 50 is configured using, for example, a piezoelectric element and vibrates the contact detection unit 40. The vibration unit 50 presents a tactile sensation to a contact object that is in contact with the touch surface by generating vibration according to a predetermined vibration pattern. In the present embodiment, the vibration unit 50 generates vibration based on the drive signal supplied from the control unit 10.

  The storage unit 80 is configured by, for example, a flash memory, and can store various types of information as well as various types of application software (hereinafter simply referred to as “applications”) executed in the electronic device 1. In particular, in the present embodiment, the storage unit 80 can store the contact position detected by the contact detection unit 40 at an arbitrary timing. In the present embodiment, the storage unit 80 can also store a position calculated by performing a predetermined calculation based on the contact position detected by the contact detection unit 40.

  Next, a process when the electronic apparatus 1 according to the present embodiment detects a contact caused by an operator's operation will be described.

  In the present embodiment, the electronic device 1 calculates and outputs an average position of the variation if the variation in the position of the contact acquired in a predetermined short time during which the contact is detected is within a predetermined range. To do. Thereafter, even if the variation exceeds a predetermined range while the contact is detected, the electronic device 1 outputs the average position calculated in advance.

  FIG. 2 shows a state in which an operator's finger operates the contact detection unit 40 configured by a rectangular touch sensor. In each of FIGS. 2A to 2C, the upper half of the figure shows a perspective view of a state in which the operator's finger F performs an operation of contacting the contact detection unit 40. Further, in each of FIGS. 2A to 2C, in the lower half of the drawing, a state in which the operator's finger F is in contact with the contact detection unit 40 is viewed from above the contact detection unit 40. Is shown. 2A shows a state before the operator's finger F comes into contact with the contact detection unit 40, and FIG. 2B shows a state immediately after the operator's finger F comes into contact with the contact detection unit 40. FIG. 2C shows a state in which a force is applied after the operator's finger F contacts the contact detection unit 40. In addition, regions α1 and α2 shown in the lower half of each of FIGS. 2B and 2C represent regions where the operator's finger F is actually in contact with the contact detection unit 40.

  Generally, when the operator performs an operation of pushing the contact detection unit 40 as a normal operation, first, the operator's fingertip F makes a slight contact with the contact detection unit 40 when viewed instantaneously (FIG. 2A). To (B)). Then, when the pressing force of the operator increases, the area where the fingertip F contacts the contact detection unit 40 increases (shown in FIGS. 2B to 2C). Note that the operations shown in FIGS. 2A to 2C are actually performed in a short time as a series of operations.

  As shown in FIG. 2B, immediately after the operator's finger F contacts the contact detection unit 40, the area α1 where the finger F is in contact with the contact detection unit 40 is small, and is detected at this point. The variation in the position of the contact is relatively small. It should be noted that the “variation in contact position” detected by the contact detection unit 40 refers to the contact position output from the contact detection unit 40 in a state where the contact detection unit 40 detects contact, for example, for a very short time. It can be assumed that the control unit 10 sequentially acquires (that is, samples) each time.

  Here, in the present embodiment, as shown in FIG. 2B, for example, a range β1 in which the variation in the contact position detected in a state where the operator's finger F is in contact with the contact detection unit 40 is relatively small. Is specified. The size of the range β1 is that the operator is in contact with the contact detection unit 40 when a predetermined calculation such as, for example, averaging the variation in the position of the contact detected in the range β1 is performed. It is preferable that the size is such that a position (point) γ1 appropriate for the position is calculated.

  As described above, the contact position by the contact detection unit 40 may be detected outside the region α1 where the operator is actually in contact. For this reason, in FIG. 2B, the range β1 is a region larger than α1. However, the range β1 may be the same size as the region α1 or the range β1 may be smaller than the region α1, depending on the required determination accuracy.

  FIG. 3 is a flowchart for explaining processing of the electronic apparatus 1 according to the first embodiment.

  When starting the processing according to the present embodiment, it is preferable that the electronic device 1 displays at least one object such as a key or an icon associated with a predetermined processing such as an application start on the display unit 30 in advance. is there.

  The processing according to the present embodiment starts when the contact detection unit 40 detects contact of a contact object such as an operator's finger or stylus. When a contact is detected and the process according to the present embodiment is started, the control unit 10 of the electronic device 1 acquires the position of the contact detected by the contact detection unit 40 within a predetermined short time (step S11). Here, the predetermined short time means that the operator's finger F touches the contact detection unit 40 lightly as shown in FIG. 2B after the contact detection unit 40 starts detecting contact in step S11. It is preferable to set the time until completion. That is, for the predetermined short time, after the operator's finger F starts to contact the contact detection unit 40, the area α1 in contact with the contact detection unit 40 does not become too large (the operator It is desirable to set a period (before pressing the contact detection unit 40).

  Thus, in step S11, the control unit 10 obtains, that is, samples the variation in the position of the contact detected by the contact detection unit 40 within the predetermined short time described above. As described above, in the state where the contact detection unit 40 configured with a touch panel detects contact, the position of the contact may vary. Therefore, in the present embodiment, the control unit 10 continuously acquires the contact positions detected by the contact detection unit 40 at a predetermined timing in order to acquire the contact positions that vary in this way.

  When the position of the contact detected within a predetermined short time is acquired in step S11, the control unit 10 determines whether or not the variation in the position of the contact acquired within the predetermined time exceeds a predetermined range. (Step S12). Here, the predetermined range is a contact position detected in a state where the operator's finger F is in contact with the region α1 of the contact detection unit 40 as in the range β1 described in FIG. A range in which the variation is relatively small is preferable.

  In step S12, when the variation in the position of the contact acquired within a predetermined time does not exceed a predetermined range (for example, β1 in FIG. 2B), the control unit 10 proceeds to step S13 and performs processing. Here, when the operator performs an operation of pressing the contact detection unit 40 for the first time as a normal operation, the process proceeds to No in step S12 and the process of step S13 is performed, and the predetermined short time in step S11 and in step S12. It is preferable to set the predetermined range as appropriate.

  In step S <b> 13, the control unit 10 performs an operation such as averaging the contact positions acquired within a predetermined short time in step S <b> 11, and uses the position (point) calculated by the operation as the contact detection unit 40. Is controlled so as to be processed as the position of the contact being detected. That is, in the present embodiment, the control unit 10 determines that the acquired contact position is within a predetermined range if the variation in the contact position acquired within the predetermined time during which the contact detection unit 40 detects the contact is within a predetermined range. The position calculated based on the control is controlled to be the contact position detected by the contact detection unit 40. In short, in step S13, the position of the contact detected by the contact detection unit 40 is determined as one point based on the position of the contact acquired within a predetermined short time. The position calculated in this way can be, for example, a position γ1 in FIG.

  Note that the calculation performed for the position of contact acquired within a predetermined short time in step S13 is not limited to calculation such as averaging. For example, in such a calculation, the contact position acquired within a predetermined short time is weighted so that the contact position where detection is started becomes the heaviest value and gradually becomes a light value. Such a calculation can also be used.

  In step S <b> 13, the control unit 10 preferably performs control so that the position (point) calculated as described above is stored in the storage unit 80. In this case, the storage unit 80 is based on the acquired position of the contact when the variation in the position of the contact acquired within the predetermined time during which the contact detection unit 40 detects the contact is within a predetermined range. The calculated position is stored.

  In step S13, when the calculated position is the position of the contact detected by the contact detection unit 40 (and the position is stored in the storage unit 80), the control unit 10 releases the contact with the contact detection unit 40. It is determined whether or not (step S14). In short, in step S14, it is determined whether or not the operator's finger or the like is still in contact with the contact detection unit 40.

  If the contact is not released in step S14, that is, if the operator's finger or the like is still in contact with the contact detection unit 40, the control unit 10 returns to step S11 and continues the process. On the other hand, when the contact is released in step S14, that is, when the operator's finger or the like is separated from the contact detection unit 40, the control unit 10 ends the process of the present embodiment.

  In step S11 after step S14, the predetermined short time for acquiring the position of the contact detected by the contact detection unit 40 represents a time after the predetermined short time defined in the previous step S11. ing. Therefore, when the operator is in contact with the contact detection unit 40 through a normal operation, the pressure applied to the contact detected in the current step S11 is greater than when the contact is detected in the previous step S11. It is assumed that For this reason, as shown in FIG. 2C, the range α2 in which the operator's finger or the like is in contact with the contact detection unit 40 is in contact with the operator's finger or the like shown in FIG. It becomes larger than the range α1. In step S11, the control unit 10 acquires, that is, samples, such a variation in the position of the contact detected by the contact detection unit 40 within a predetermined short time.

  When the contact position within a predetermined short time is acquired in step S11, the control unit 10 determines whether or not the variation in the contact position acquired within the predetermined time exceeds a predetermined range (step S11). S12). In the state shown in FIG. 2C, since the area where the operator's finger or the like is in contact with the contact detection unit 40 is large, the variation in the position of the contact acquired within a predetermined time is described above. It is assumed that the predetermined range β1 is exceeded. In such a case, the control unit 10 proceeds to step S15 to perform processing.

  In step S <b> 15, the control unit 10 confirms whether or not the contact position stored in the storage unit 80 exists. Here, the stored contact position is the storage unit 80 that stores the position calculated in step S13 described above. When the contact position stored in step S15 does not exist, the process of step S13 is performed. However, after passing through step S13, the contact position stored in the storage unit 80 exists. As described above, when the stored contact position exists in step S15, the control unit 10 performs control so as to process the stored contact position as the detected contact position (step S16).

  That is, as shown in FIG. 2C, when an operator's finger or the like is in contact with the region α2 in the contact detection unit 40, the average of the contact positions with variation obtained within a predetermined short time is averaged. In this case, a position shifted from the initial γ1 is calculated, for example, a position γ2. As described above, when the position γ2 is processed as the contact position detected by the contact detection unit 40, the contact position is detected by being deviated from the state in which the operator first started the contact. However, the operator desires to contact the position where contact is first started, and it is considered that the operator does not intend to shift the position of the contact when the pressure is increased thereafter. Therefore, in the present embodiment, the position calculated and stored immediately after contact is detected as described with reference to FIG. 2B even when the operator has increased the pressure as shown in FIG. γ1 is handled as the contact position detected by the contact detection unit 40.

  After step S16, the control unit 10 determines whether or not the contact with the contact detection unit 40 has been released (step S14), and the subsequent processing is as described above.

  As described above, in this embodiment, the control unit 10 determines that the acquired contact is detected when the variation in the position of the contact acquired within the predetermined time during which the contact detection unit 40 detects the contact exceeds a predetermined range. The position calculated based on the position is controlled to be the position of contact detected by the contact detection unit 40. At this time, it is preferable that the control unit 10 controls the position stored in the storage unit 80 to be a contact position detected by the contact detection unit 40.

  As described above, the electronic device 1 according to the present embodiment has a point in time close to the beginning of the contact detection even if the position of the acquired contact is shifted due to an increase in pressure after the operator's finger touches the touch sensor. The position of the contact is determined based on the contact. Therefore, even if the position of the acquired contact is deviated due to an increase in pressure after the operator's finger or the like contacts the touch sensor, the displacement of the contact position due to this is suppressed. The accuracy of detecting the position of contact can be improved.

  In general, in an electronic device including a touch sensor, even if a touch operation is performed on the touch sensor, the touch sensor is not physically displaced like a push button switch. I can't get feedback. For this reason, the electronic device 1 according to the present embodiment can vibrate the contact detection unit 40 by the vibration unit 50 based on the contact detected by the contact detection unit 40 to generate vibration at the fingertip of the operator. In this way, the operator who performs the contact operation can recognize by tactile sense that the operation performed on the contact detection unit 40 is correctly recognized by the device.

  However, generating the vibration while the contact detection unit 40 is detecting the contact of the operator means that the sensor detecting the contact of the operator is vibrated. By generating vibration while the contact detection unit 40 is detecting the contact of the operator, not only the contact detection unit 40 itself is moved, but also the finger of the operator in contact is moved, As shown in FIG. 7, the contact state between the two conductive films also changes finely. For this reason, while the contact detection unit 40 vibrates, the position of the contact detected by the contact detection unit 40 varies more and more. Therefore, from the viewpoint of the accuracy with which the contact detection unit 40 detects the position of the contact, if the contact detection unit 40 is vibrated during the detection of the contact in this way, it becomes increasingly difficult to accurately detect the contact position. Become. However, according to the electronic device 1 according to the present embodiment, even in such a case, since the displacement of the acquired contact position can be suppressed, the accuracy of the contact detection unit detecting the contact position is improved. Can do.

(Second Embodiment)
Next, an electronic apparatus according to a second embodiment of the invention will be described.

  The second embodiment adds processing by the control unit 10 to the electronic device 1 according to the first embodiment described above. Specifically, in the electronic device 2 according to the second embodiment, in the electronic device 1 according to the first embodiment, an operation (so-called drag) in which the operator slides with a finger or the like in contact with the contact detection unit 40 is performed. Make it detectable. The electronic device 2 according to the second embodiment can be realized by basically the same device configuration and control as those of the electronic device 1 described in the first embodiment, except for the above points. For this reason, below, the description which becomes the same content as demonstrated in 1st Embodiment is abbreviate | omitted suitably.

  FIG. 4 is a flowchart for explaining processing of the electronic device 2 according to the second embodiment. In the process according to the second embodiment, steps S21 to S23 are inserted between step S15 and step S14 in the process according to the first embodiment described in FIG.

  In the second embodiment, in step S15, when there is a contact position that has already been stored in the storage unit 80 once through step S13, the control unit 10 has detected the stored contact position in step S16. After the contact position, the process of step S21 is performed.

  In step S <b> 21, the control unit 10 detects an operation (so-called dragging) in which the operator slides while keeping a finger or the like in contact with the contact detection unit 40. For this reason, the control unit 10 performs an operation such as obtaining and averaging the contact positions detected by the contact detection unit 40, and the contact detection unit 40 detects the position (point) calculated by the calculation. Control to treat as a contact position.

  The process of step S21 is performed when the contact position acquired in step S12 exceeds a predetermined range (for example, β1), and the operator's finger or the like comes into contact with the contact detection unit 40. Is a relatively large region, for example, a region α2 shown in FIG. For this reason, the position of the contact acquired in step S12 has a relatively large variation. When the position of the contact having such a variation is averaged, for example, a position γ2 is obtained.

  In step S21, the control unit 10 determines whether or not such an average position γ2 is displaced beyond a predetermined distance. As described above, the process of step S21 is performed when the contact positions acquired in step S12 have a relatively large variation. Therefore, if the “predetermined distance” at the time of the determination in step S21 is made too small, it is erroneously determined that a drag has been performed even though the operator has not slid the finger touched to the contact detection unit 40 or the like. There is a risk. For this reason, when the operator intentionally performs dragging, the predetermined distance is appropriately set so that the average of the contact positions is determined to be displaced beyond the predetermined distance in step S21. It is desirable to do.

  If it is determined in step S21 that the average of the contact positions is not displaced beyond the predetermined distance, the control unit 10 determines that no drag is being performed, and the process proceeds to step S14. The processing after step S14 is as described in the first embodiment.

  On the other hand, when it is determined in step S21 that the average of the contact positions has been displaced beyond the predetermined distance, the control unit 10 has displaced the contact position stored in the storage unit 80 by the amount of the displacement. Is processed as the detected contact position (step S22).

  For example, as shown in FIG. 5 (A), when the operator's finger or the like is in contact with the region α2 in the contact detection unit 40, the contact positions having variations obtained within a predetermined short time are averaged. Assume that the position γ2 is calculated. Here, it is assumed that the position γ1 exists in the storage unit 80 as the position of the contact already stored. Here, it is assumed that the operator's finger or the like is dragged by the contact detection unit 40 and moved from the region α2 in contact with the contact detection unit 40 to the region α2 ′ shown in FIG. In this case, when it is determined that the calculated position γ2 has been displaced to a position γ2 ′ beyond a predetermined distance as shown in FIG. 5B (Yes in step S21), the position γ1 is changed to the position γ1. The position γ1 ′ that has been displaced is processed as the detected contact position (step S22).

  In step S22, if the stored contact position is displaced as the detected contact position, the control unit 10 has not detected an operation in which the average of the contact positions is displaced beyond a predetermined distance. It is determined whether or not (step S23). That is, in step S23, it is determined whether or not the dragging by the operator is still continued. In step S23, when the operation in which the average of the contact positions is displaced beyond the predetermined distance has not been stopped, the control unit 10 continues the process of step S22 until the operation stops.

  On the other hand, if it is determined in step S23 that the operation of displacing the average of the contact positions beyond a predetermined distance has stopped, that is, it is determined that dragging is no longer being performed, the control unit 10 proceeds to the process of step S14. . The processing after step S14 is as described in the first embodiment.

  Thus, in the present embodiment, the control unit 10 is acquired when the variation in the position of the contact acquired within the predetermined time during which the contact detection unit 40 detects the contact exceeds the predetermined range. If the position calculated based on the contact position is displaced beyond a predetermined distance, the contact detection unit 40 detects the position that is displaced from the position stored in the storage unit 80 based on the displacement. Control to do.

  As described above, the electronic device 2 according to the present embodiment can be appropriately determined as the drag operation even when the operator performs the drag. In addition, in the electronic device 2 according to the present embodiment, when it is determined that the operator has dragged, the position of the contact having a relatively large variation is used only for calculating the direction and distance of the displacement and becomes the starting point of the displacement. As the position, the position of contact at a time point with relatively small variation is used. For this reason, the electronic device 2 according to the present embodiment can improve the accuracy of detecting the position of the contact when the drag is completed even when the operator performs the drag.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, in each of the above-described embodiments, an aspect has been described in which an object is displayed on the display unit 30 and the contact detection unit 40 detects an operator's contact. However, the present invention is not limited to such an aspect. For example, an aspect in which the object is directly printed on the touch surface of the contact detection unit 40 without using the display unit 30 with ink or the like. It can also be assumed.

  In addition, the electronic device according to the present invention is not limited to the configuration described in each of the above-described embodiments, and various configurations can be adopted according to the design requirements. For example, in each of the above-described embodiments, the configuration in which the storage unit 80 is a separate element has been described. However, for example, the control unit 10 may be configured to include the function of the storage unit 80 in its own cache memory.

  The vibration unit 50 is configured by using an arbitrary number of piezoelectric vibrators, is configured by providing a transparent piezoelectric element on the entire surface of the contact detection unit 40, or rotates the eccentric motor once in one cycle of the drive signal. It can also be configured in this way. The vibration unit 50 may be configured to indirectly vibrate the contact detection unit 40 by vibrating the electronic device 1 using a vibration motor (eccentric motor) or the like. You may comprise so that the contact detection part 40 may be vibrated directly by arrange | positioning a piezoelectric element.

  In the above-described embodiment, the description has been made assuming a configuration in which the contact detection unit 40 is disposed so as to overlap the upper surface side of the display unit 30. It is not essential for the electronic apparatus according to the present invention to have such a configuration, and the contact detection unit 40 and the display unit 30 can be separated from each other. However, the configuration in which the contact detection unit 40 is disposed so as to overlap the upper surface of the display unit 30 allows the operator to easily recognize the correspondence between the displayed image and the generated vibration.

  In addition, the electronic device according to the present invention determines whether the variation in the position of the contact acquired within a predetermined time during which the contact detection unit detects the contact is within a predetermined range or exceeds the predetermined range. However, in this determination, the electronic device calculates a dispersion value based on the contact position acquired within a predetermined time, and determines that the dispersion value is within a predetermined range when the dispersion value is equal to or less than the predetermined value. If it exceeds the predetermined range, it may be determined that the predetermined range is exceeded.

  Note that various methods can be used to determine whether the variation in the position of the contact acquired within the predetermined time during which the contact detection unit detects the contact is within the predetermined range or exceeds the predetermined range. . For example, according to the electronic device of the present invention, among a plurality of contact positions acquired within a predetermined time, one contact position is a position of another contact (for example, an average position based on the position of another contact). Based on whether or not the distance is large (predetermined distance), it may be determined whether the variation in contact position is within a predetermined range or exceeds a predetermined range.

  The above determination is based on the position of the contact first acquired by the control unit when the contact detection unit is in a state of detecting contact from the state where the contact detection unit is not detecting contact, Based on whether the contact acquired by the control unit within a predetermined time is within a predetermined distance from the base point, it may be determined whether the variation in the position of the contact is within a predetermined range or exceeds the predetermined range. .

DESCRIPTION OF SYMBOLS 1 Electronic device 10 Control part 30 Display part 40 Contact detection part 50 Vibrating part 80 Memory | storage part

Claims (3)

A contact detector for detecting contact;
A control unit for acquiring a position of contact detected by the contact detection unit;
An electronic device comprising:
The controller is
If the variation of the contact position acquired within a predetermined time during which the contact detection unit detects the contact is within a predetermined range, the contact detection unit calculates the position calculated based on the acquired contact position. The position of the contact to detect,
When the variation in the position of the contact acquired within a predetermined time when the contact detection unit detects the contact exceeds a predetermined range, the calculated position is set as the contact position detected by the contact detection unit. An electronic device characterized by being controlled. A storage unit that stores a position calculated based on the acquired position of contact when a variation in the position of the contact acquired within a predetermined time during which the contact detection unit detects contact is within a predetermined range Further comprising
The control unit detects the position stored in the storage unit when the variation in the position of the contact acquired within a predetermined time during which the contact detection unit detects contact exceeds a predetermined range. The electronic device according to claim 1, wherein the electronic device is controlled so as to be a contact position. The control unit calculates, based on the acquired position of the contact, when a variation in the position of the contact acquired within a predetermined time when the contact detection unit detects the contact exceeds a predetermined range. 3. When the position is displaced beyond a predetermined distance, control is performed so that the position detected by the contact detection unit is obtained by displacing the position stored in the storage unit based on the displacement. The electronic device as described in.

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