JP6562746B2 - Electronic device, control method and program for electronic device, and storage medium - Google Patents

Description

  The present invention relates to an electronic device that supports a display operation means including a liquid crystal display panel and a touch panel on a device main body by a hinge mechanism so that the device main body can be opened and closed by the hinge mechanism, a control method and program for the electronic device, and a storage medium.

  2. Description of the Related Art Conventionally, in an electronic device such as a digital camera, a configuration is known in which a display operation panel in which a touch panel is disposed on a screen of a liquid crystal display panel is connected to the device body via a biaxial hinge mechanism. For example, it is possible to select the position where the display screen of the display operation panel is in close contact with the device body, the position where the display screen is in close contact with the device body, and the position where the display operation panel is moved away from the device body. Become.

  In such an electronic device, a configuration having an open / close detection sensor for detecting whether the display / operation panel is in close contact with the device body with the display screen of the display / operation panel facing the device body, or other open state Is known (see Patent Documents 1 and 2). Based on the detection result of the open / close detection sensor, the control of the liquid crystal display panel and the touch panel of the display operation panel can be switched according to whether the display operation panel is in the open state or the closed state.

  In Patent Document 1, a magnet is arranged on a liquid crystal display panel that can be opened and closed by a biaxial hinge mechanism from the camera body, and a hall element is arranged at a corresponding position on the camera body side, and the liquid crystal display panel is opened and closed by the output of the hall element. The technology to detect is described.

  Patent Document 2 describes a configuration in which a protrusion is provided at a position of a main body facing a touch panel constituting the display operation panel in an information processing apparatus having a display operation panel that can be opened and closed with respect to the main body. It is determined that the display operation panel is closed when the touch panel input is continued for a certain period of time when the protrusions are in contact with the touch panel while the display operation panel is closed.

JP 2012-19279 A JP 2006-72871 A

  In the prior art described in Patent Document 1, a magnet and a Hall element are required for detecting the opening and closing of the liquid crystal display panel with respect to the device body, and these need to be assembled at predetermined positions. This increases the weight of the electronic device.

  Moreover, the exterior of a conductive material is employed in the device body, and a capacitance type may be employed as a touch panel for a display operation panel. When the conventional technology is applied to this configuration, the open / closed state detection and the touch input detection are independent, so that the touch input may be detected due to the proximity of the touch panel to the device body during the operation to close the display operation panel. There is sex. That is, the electronic device may malfunction due to touch input detection not intended by the user.

  In the prior art disclosed in Patent Document 2, it is necessary to provide a protrusion shape on the device body, and the protrusion shape and the touch panel may collide with each other due to the closing operation, which may cause damage to the touch panel.

  An object of the present invention is to provide an electronic device, a control method and program for an electronic device, and a storage medium that can detect an openable / closable member having a touch panel without providing a dedicated component for detecting the opening / closing.

  An electronic apparatus according to the present invention includes a monitor unit rotatably connected to a main body unit via a connection unit, and a capacitance type touch that detects a touch operation on a display unit provided in the monitor unit. In response to satisfying a specific condition including detecting a capacitance change greater than or equal to a predetermined area and greater than or equal to a predetermined threshold in a region on the connecting portion side of the detection means and the touch detection means, Control means for determining that the position of the monitor unit has been changed to a closed state in which the display surfaces of the display means face each other, and controlling the display of the display means to be non-displayed.

  According to the present invention, it is possible to detect opening / closing of the monitor unit without providing a dedicated opening / closing detection component.

1 is an external perspective view of a camera to which an embodiment of the present invention is applied. It is a perspective view which shows the open / close state of the display operation panel of the camera shown in FIG. It is a schematic block diagram of the camera shown in FIG. It is explanatory drawing of 1st electrostatic capacitance threshold value Th1. It is explanatory drawing of 2nd electrostatic capacitance threshold value Th2. It is sensor arrangement explanatory drawing of a touch panel. It is a control flowchart at the time of opening and closing of a present Example. FIG. 8 is a control flowchart for the closed state following FIG. 7. FIG. FIG. 8 is another control flowchart for the closed state, following FIG. 7. It is a figure explaining the division of the sensor group used for opening and closing detection. It is a control flowchart at the time of opening and closing using opening and closing detection by a sensor group.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1A and 1B are external views of a digital camera to which an embodiment of the present invention is applied. FIG. 1A is a perspective view seen from the front side (subject side), and FIG. The perspective view seen from the photographer side) is shown.

  As an example of an openable / closable member having a touch panel, the digital camera 10 includes a display operation panel 16 (monitor unit) mounted on the back surface of the camera body 12 so as to be opened and closed and reversed by a biaxial hinge mechanism 14 (connecting unit). . The display operation panel 16 has a configuration in which a touch panel 20 (touch detection means) is mounted on a display surface of an image display panel 18 (display means) such as a liquid crystal display panel or an organic EL display device. FIG. 1B shows a state in which the display operation panel 16 is brought into close contact with the camera body 12 with the display surface of the image display panel 18 facing the photographer.

  The image display panel 18 is used for displaying captured images, various setting screens, reproduced images, and the like, and can also be used as a so-called view finder at the time of imaging. The touch panel 20 is a means for detecting a user's touch input operation and notifying the operation position coordinates to the control unit of the camera 10, and is used for display switching of the image display panel 18, release, changing various settings of the camera 10, and the like. The The touch panel 20 is a capacitance type, and a plurality of input and non-input determination thresholds can be set for the detected capacitance.

  Similar to the touch panel 20, the input operation unit 22 is used to instruct the camera 10 to change various settings, turn on / off the power, start display lighting of the image display panel 18, and the like.

  The rear exterior cover 24 that covers the rear surface of the camera body 12 is formed of a conductive material, and has a recess that just accommodates the folded display operation panel 16.

  The display operation panel 16 can be rotated around the two axes by the two-axis hinge mechanism 14. That is, the display / operation panel 16 can freely select a position in which the image display panel 18 is directed inward or outward and stored in the recess of the rear exterior cover 24 and a deployed position opened from the camera body 12. FIG. 2 is an external perspective view of the camera 10 viewed from the back side at each position. FIG. 2A is an external perspective view of the image display panel 18 facing the photographer in the unfolded state. FIG. 2B is an external perspective view showing a state where the image display panel 18 is stored in the recess of the rear exterior cover 24 with the image display panel 18 facing inward. FIG. 2C shows a state in which the image display panel 18 faces the subject side in the unfolded state. The biaxial hinge mechanism 14 instructs the display operation panel 16 to be rotatable about the axis A in FIG. 2 and instructs the display operation panel 16 to be rotatable about the axis B.

  In this specification, the state in which the image display panel 18 faces inward and is housed in the recess of the rear exterior cover 24 (FIG. 2B) is referred to as a closed state. A state of being separated from the rear exterior cover 24 by a certain angle or more is referred to as an open state. Turning the display / operation panel 16 around the rotation axis A to change the angle between the display / operation panel 16 and the camera body 12 is referred to as an opening / closing operation, and moving from the open state to the closed state is a closing operation. The movement from the closed state to the open state is called an opening operation. In order to distinguish from an opening / closing operation centered on the rotation axis A, an operation of rotating the display operation panel 16 about the rotation axis B is referred to as a rotation operation.

  FIG. 3 shows a schematic block diagram of the camera 10. The imaging unit 30 includes an imaging device that converts an object optical image into an electrical image signal, digitizes the captured image signal from the imaging device, and supplies the digitized image signal to a microcomputer (MPU) 32. The MPU 32 controls the camera 10 as a whole. In particular, in this embodiment, the MPU 32 controls driving or power supply of the image display panel 18 and the touch panel 20 according to the open / closed state of the display operation panel 16. The nonvolatile memory 34 stores various setting values, operation parameters, and control programs for the camera 10. A RAM (Random Access Memory) 36 is a work memory of the MPU 32. The MPU 32 performs various controls of the camera 10 by developing a control program stored in the nonvolatile memory 34 in the RAM 36 and executing it.

  The MPU 32 supplies the image data from the imaging unit 30 to the display control unit 38. The display control unit 38 drives the image display panel 18 according to the image data from the MPU 32 to display the captured image on the image display panel 18. Thereby, the photographer (user) can visually confirm the subject captured by the camera 10 and the composition thereof on the display screen of the image display panel 18. Although the details will be described later, the display control unit 38 controls display / non-display of the image display panel 18, for example, lighting on / off, according to an instruction from the MPU 32.

  The input operation control unit 40 transmits inputs from the touch panel 20 and the input operation unit 22 to the MPU 32. The input operation control unit 40 also controls validation / invalidation of the functions of the touch panel 20 (capacitance detection and touch input detection) in accordance with instructions from the MPU 32. The touch panel 20 can detect the capacitance and the touch input in the activated state (on state), and supplies the detected capacitance value and the input coordinate value to the MPU 32 via the input operation control unit 40. On the other hand, in the invalidation state (off state), the touch panel 20 does not detect the capacitance, and does not respond to touch input.

  The threshold value setting of the capacitance of the touch panel 20 will be described. The touch panel 20 includes a plurality of touch sensors arranged or divided on a matrix (in this embodiment, a matrix of 14 columns × 9 rows), and sequentially outputs the capacitance value of each touch sensor to the MPU 32 repeatedly. When the user brings a finger closer to the surface of the touch panel 20, the closer the touch sensor is to the finger, the greater the capacitance. The MPU 32 determines the position coordinates on the touch panel 20 of the user's finger approaching the touch panel 20 from the capacitance detected by each touch sensor constituting the touch panel 20.

  When the capacitance of any touch sensor from the touch panel 20 exceeds the capacitance threshold, the MPU 32 receives a touch input or touch operation by the user, executes position coordinate determination processing, and outputs position coordinate data. As such a capacitance threshold value, two values having different levels can be set.

  FIG. 4 is an explanatory diagram of a first capacitance threshold Th1 that determines whether or not there is a touch input at a distance at which the touch panel 20 is touched or substantially touched. FIG. 4A is a side view showing a positional relationship between the touch panel 20 and a finger 50 touching the touch panel 20. FIG. 4B shows an example of the size and distribution of the capacitance detected by the touch sensor with respect to the position of the finger 50 shown in FIG. The horizontal axis of FIG.4 (b) shows the coordinate of the surface direction on the touchscreen 20, and a vertical axis | shaft shows an electrostatic capacitance value. FIG. 5 is an explanatory diagram of a second capacitance threshold Th <b> 2 that determines touch input at a distance slightly away from the touch panel 20. The second capacitance threshold Th2 is smaller than the first capacitance threshold Th1. FIG. 5A is a side view showing the positional relationship between the touch panel 20 and the finger 50 touch-operating on the touch panel 20, as in FIG. FIG. 5B shows an example of the magnitude and distribution of the capacitance detected by the touch sensor with respect to the position of the finger 50 shown in FIG. Similarly to FIG. 4B, the horizontal axis in FIG. 5B indicates the coordinates in the surface direction on the touch panel 20, and the vertical axis indicates the capacitance value.

  A method in which the MPU 32 (control program operating on the above) detects the opening / closing operation of the display operation panel 16 with respect to the camera body 12 will be described.

  Since the rear exterior cover 24 facing the touch panel 20 is formed of a conductive material, the touch panel 20 comes close to the rear exterior cover 24 by the operation of closing the display operation panel 16, and the capacitance of the touch panel 20 changes. Specifically, the capacitance of the touch sensor on the side close to the hinge mechanism 14 (the connecting portion side) is larger than that of the touch sensor on the side remote from the hinge mechanism 14. The second capacitance threshold Th2 is set so as to detect a state where the display operation panel 16 is closed within a certain angle.

  FIG. 6 is an explanatory diagram of sensor arrangement relating to detection of closing of the touch panel 20, and shows a plan view of the touch panel 20. In the present embodiment, the MPU 32 firstly has a capacitance of a region 60 of a predetermined width including one row on the rotation axis A side of the hinge mechanism 14 among the touch sensors of the touch panel 20 exceeds the second capacitance threshold Th2. Determine whether or not. Then, after the capacitance of each touch sensor in the region 60 exceeds the second capacitance threshold Th2, the MPU 32 determines whether the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2. Determine. As a result of such a two-step determination, when the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2, the MPU 32 indicates that the display operation panel 16 is in a closed state by a closing operation. judge.

  By performing such a two-step determination, it is possible to prevent the user from erroneously detecting the closed state when the user covers the entire surface of the touch panel 20 with a palm. Further, since a threshold value (second capacitance threshold value Th2) smaller than the touch input detection threshold value (first capacitance threshold value Th1) is used for the closing operation detection, the capacitance change accompanying the closing operation is touched. It can be prevented from being mistaken for input.

  The distance between the rear exterior cover 24 and the inner surface of the display operation panel 16 in the closed state is that the detected capacitance of the touch panel 20 is between the first capacitance threshold Th1 and the second capacitance threshold Th2. It is set to be a value between. The surface of the rear exterior cover 24 facing the touch panel 20 is desirably flat so as to be substantially parallel to the surface of the touch panel 20 when the display operation panel 16 is in the closed state. By doing so, the MPU 32 can correctly detect that the display operation panel 16 is approaching the closed state when the display operation panel 16 is closed, and that the display operation panel 16 is in the closed state.

  A groove shape or a concave shape may be provided on the surface of the rear exterior cover 24 facing the touch panel 20. In this case, the width of the short side of the groove shape or the concave shape is preferably smaller than the width of the short side of one touch sensor of the touch panel 20. By doing so, a part of the touch sensor is surely brought close to a portion that is not a groove shape or a concave shape, and the MPU 32 can correctly detect that the display operation panel 16 is in the closed state.

  If a convex shape is provided on the surface facing the touch panel 20 of the back exterior cover 24, the surface of the display operation panel 16 (the surface of the image display panel 18 or the touch panel 20) may be scratched during the closing operation. No convex shape is provided. A convex shape may be provided on the rear exterior cover 24 for the purpose of alleviating the impact that the display operation panel 16 and the rear exterior cover 24 abut on due to the closing operation. However, in this case, as shown in FIG. 2A, the convex shape 24 a is arranged outside the image display area of the display operation panel 16 (touch detection area of the touch panel 20).

  The basic operation of the control for detecting the state change from the open state to the closed state will be described. When the user instructs the MPU 32 to turn on the display using the input operation unit 22, the MPU 32 detects the capacitance of the touch panel 20. The MPU 32 determines that the display operation panel 16 is in the open state when there is a portion where the detected capacitance does not exceed the second capacitance threshold Th2. Since the capacitance of the touch panel 20 is detected after the display operation instruction is given by the input operation unit 22, the MPU 32 does not need to constantly detect the capacitance of the touch panel 20, and can suppress power consumption. However, when the display operation panel 16 is shifted from the closed state to the open state, a display lighting instruction operation by the user is required. When it is desired to automatically turn on the power supply to the display operation panel 16 in conjunction with the opening operation, the MPU 32 continuously changes the capacitance of the touch panel 20 while the display operation panel 16 is in the closed state. Need to continue to detect. However, power consumption can be suppressed by lengthening the detection cycle during the closed state.

  When the display operation panel 16 is in the closed state, the MPU 32 turns off the illumination light source of the image display panel 18 via the display control unit 38 and stops the detection operation of the touch panel 20 via the input operation control unit 40. That is, the MPU 32 turns off the image display panel 18 and disables (turns off) the touch panel. On the other hand, when the display operation panel 16 is in the open state, the MPU 32 turns on the illumination light source of the image display panel 18 via the display control unit 38 and causes the detection operation of the touch panel 20 to function via the input operation control unit 40. . That is, the MPU 32 makes the image display panel 18 in an image displayable state and enables (turns on) the touch panel 20.

  With reference to the flowcharts shown in FIGS. 7, 8 and 9, the opening / closing detection of the display operation panel 16 and the operation controlled by the image display panel 18 and the touch panel 20 will be described. The MPU 32 implements the control operations shown in FIGS. 7, 8, and 9 by reading the control program for this purpose from the nonvolatile memory 34 into the RAM 36 and executing it. Whether or not the capacitance of each touch sensor of the touch panel 20 is greater than or equal to the capacitance threshold is actually determined by whether the difference from the reference value of the capacitance of each touch sensor is greater than or equal to the capacitance threshold. Judge by how. The reference value is set by adjustment at the time of factory shipment, calibration at power-on, or calibration performed by other factors. When calibration is not performed, the capacitance value itself detected by the touch sensor may be compared with a capacitance threshold value to determine whether or not the capacitance threshold value is exceeded.

  When the user turns on the power with the input operation unit 22, the MPU 32 activates the camera 10 and starts control according to the flow shown in FIG.

  In step S701, the MPU 32 turns on the touch panel 20, and in step S702, the MPU 32 determines whether or not the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2. When the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2 (S702), the display operation panel 16 is in the closed state, and the MPU 32 performs processing for the closed state (FIG. 8). The process proceeds to S801 or S901 in FIG.

  If any one of the capacitances of the touch panel 20 does not exceed the second capacitance threshold Th2 (S702), the display operation panel 16 is not in the closed state. In this case, the MPU 32 turns on the illumination light source of the image display panel 18 by the display control unit 38 in S703, and proceeds to the processing for the open state after S704.

  In S704, the MPU 32 determines whether or not the capacitance of the predetermined area 60 close to the first rotation axis A of the hinge mechanism 14 of the touch panel 20 exceeds the second capacitance threshold Th2. If the second capacitance threshold Th2 is exceeded (S704), the MPU 32 proceeds to S705, otherwise proceeds to S707.

  In S705, the MPU 32 determines whether or not the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2. When the second capacitance threshold Th2 is exceeded (S705), the MPU 32 determines that the display operation panel 16 is closed, that is, moved to the closed state, and turns off the display of the image display panel 18 in S706. . Then, the MPU 32 proceeds to the process for the closed state (S801 in FIG. 8 or S901 in FIG. 9). On the other hand, when the second capacitance threshold Th2 is not exceeded (S705), the MPU 32 returns to S704.

  In S707, the MPU 32 determines whether or not the capacitance of the area of the touch panel 20 that is equal to or larger than the predetermined area exceeds the second capacitance threshold Th2. When the second capacitance threshold Th2 is exceeded (S707), the MPU 32 determines that an input unintended by the user has been made, and proceeds to S708. In S708, the MPU 32 disables the touch input to the touch panel 20 via the input operation control unit 40, and returns to S704. By doing so, it is possible to prevent erroneous input unintended by the user, for example, when touch input is detected by touching the touch panel 20 against the user's abdomen when the user lowers the camera from the neck. At this time, the display of the image display panel 18 is maintained without being turned off. Instead of disabling touch input, it is substantially the same if the MPU 32 ignores touch input during that time.

  When the second capacitance threshold Th2 is not exceeded (S707), the MPU 32 proceeds to S709. In S709, the MPU 32 determines whether or not there is a region in the capacitance of the touch panel 20 that exceeds the first capacitance threshold Th1. If there is a region exceeding the first capacitance threshold Th1 (S709), the MPU 32 determines that the input is a touch input by the user, and performs an input process according to the region exceeding the first capacitance threshold Th1 in S710. Do. In other words, the MPU 32 executes processing according to the touched position (exceeding the first capacitance threshold th1) and the type of touch operation. For example, when the touch position is the display position of the touch icon and the touch position leaves without moving (when the type of touch operation is a tap), the MPU 32 executes the function assigned to the touched icon. To do. For example, in response to a tap on a menu icon that opens the setting change menu, the MPU 32 opens the setting change menu. When tapped on the live view, the MPU 32 performs touch AF for adjusting AF (autofocus) to the tap position. When the type of touch operation is drag or flick (both operations that move the touch position while touching), the MPU 32 performs a process of scrolling the display according to the movement of the touch position by drag or flick.

  If there is no region exceeding the first capacitance threshold Th1 (S709), the MPU 32 proceeds to S711. In step S <b> 711, the MPU 32 determines whether the camera operation is turned off by the input operation unit 22. If there is a camera power-off operation (S711), the MPU 32 controls a power supply circuit (not shown) to turn off the camera 10 in S712, and the flow shown in FIG. If there is no camera power-off operation (S711), the MPU 32 returns to S704.

  By the above-described control, the state change from the open state to the closed state can be detected without providing the mechanical or electromagnetic means for detecting the state change of the display / operation panel 16 from the open state to the closed state. According to this detection result, the illumination of the image display panel 18 is turned off, and the touch panel 20 is turned off as necessary, so that power consumption can be reduced.

  In S705, the MPU 32 determines the transition to the closed state based on whether or not the capacitance of the entire touch panel 20 exceeds the second capacitance threshold Th2. As another method, the transition of the display operation panel 16 to the closed state may be determined by detecting the angle between the display operation panel 16 and the rear exterior cover 24. For example, when the capacitance of the touch sensor in a portion adjacent to the hinge mechanism 14 in the predetermined area 60 of the touch panel 20 further increases beyond the second capacitance threshold Th2, the display operation panel 16 is closed. Can be determined.

  FIG. 8 shows a control flow when the display operation panel 16 is in the closed state, and FIG. 9 shows another control flow. First, the control shown in FIG. 8 will be described. In the closed state, the display on the image display panel 18 is turned off.

  In step S <b> 801, the MPU 32 turns off the touch panel 20 via the input operation control unit 40.

  In step S <b> 802, the MPU 32 determines whether the user has instructed to turn on the display using the input operation unit 22. The input operation unit 22 includes an operation button (display start button) for this purpose. When this instruction is given, the MPU 32 turns on the touch panel 20 in S803, and detects the capacitance of the touch panel 20 in S804.

  In step S <b> 805, the MPU 32 determines whether there is an area equal to or smaller than the second capacitance threshold Th <b> 2 in the capacitance of the touch panel 20. When there is an area equal to or smaller than the second capacitance threshold Th2 (S805), the display operation panel 16 is moved from the closed state to the open state. Therefore, the MPU 32 lights the display on the image display panel 18 in S806, and proceeds to the process for the open state (S704 in FIG. 7). On the other hand, when there is no region equal to or smaller than the second capacitance threshold Th2 (S805), the MPU 32 returns to S802 because it remains closed.

  If there is no indication lighting instruction including cancellation (S802), the MPU 32 turns off the touch panel in S807, and determines in S808 whether or not an operation for turning off the camera power has been performed by the input operation unit 22. If there is a camera power-off operation (S808), the MPU 32 controls a power supply circuit (not shown) to turn off the power of the camera 10 in S819, and ends the flow shown in FIGS. If there is no camera power-off operation (S808), the MPU 32 returns to S802.

  In the control shown in FIG. 8, the display on the image display panel 18 is turned on in response to the user's operation to move the display operation panel 16 from the closed state to the open state. This can prevent wasteful power consumption.

  The control shown in FIG. 9 will be described. In the control shown in FIG. 9, the touch panel 20 is always turned on even in the closed state.

  In step S <b> 901, the MPU 32 determines whether there is an area that is equal to or smaller than the second capacitance threshold Th <b> 2 in the capacitance of the touch panel 20. When there is an area equal to or smaller than the second capacitance threshold Th2 (S901), the display operation panel 16 is moved from the closed state to the open state. Therefore, the MPU 32 lights the display on the image display panel 18 in S902, and proceeds to the process for the open state (S704 in FIG. 7).

  If there is no region equal to or smaller than the second capacitance threshold Th2 (S901), the MPU 32 remains in the closed state, and therefore the MPU 32 determines whether or not the camera power-off operation has been performed by the input operation unit 22 in S903. When there is a camera power-off operation (S903), the MPU 32 controls a power supply circuit (not shown) to turn off the power of the camera 10 in S914, and ends the flow shown in FIGS. When there is no camera power-off operation (S903), the MPU 32 returns to S901.

  In the control shown in FIG. 9, since the touch panel 20 is turned on even when the display operation panel 16 is in the closed state, the power consumption is higher than in the control shown in FIG. Get better.

  When the user can select ON / OFF of the touch panel 20 as a setting, and when it is set to OFF, the MPU 32 does not accept the touch position input, but controls the touch panel 20 so that the detection of the capacitance is always performed. .

  As described above, in this embodiment, it is possible to detect the opening / closing of the display operation panel 16 without providing a mechanical part or an electromagnetic part dedicated to the opening / closing detection.

  Another embodiment for detecting opening and closing of the display operation panel 16 will be described. Here, all the touch sensors of the touch panel 20 are divided into a plurality of groups in a strip shape according to the distance from the hinge mechanism 14, and the opening / closing of the display operation panel 16 is detected by comparing the capacitances of the groups. To do.

  FIG. 10A shows an example of group division of the touch panel 20, and FIG. 10B shows a side view in a state where the display operation panel 16 is slightly opened from the rear exterior cover 24. As shown in FIG. 10A, the touch sensor of the touch panel 20 is divided into seven equal-width sensor groups 1002, 1004, 1006, 1008, 1010, 1012 and 1014 according to the distance from the rotation axis A of the hinge mechanism. To do. Each of the sensor groups 1002 to 1014 includes two rows of touch sensors in the example illustrated in FIG. 10A, but this is an example for explanation. Here, the total value, the average value, or the representative value of the capacitance detected in each of the sensor groups 1002 to 1014 is C1, C2, C3, C4, C5, C6, and C7.

When a change of a predetermined value or more is detected in the capacitance C7 of the sensor group 1014, the MPU 32 checks the magnitude relationship between the capacitances C1 to C7 of the sensor groups 1002 to 1014. And for example,
C1>C2>C3>C4>C5>C6> C7 (1)
When the relationship is established, the MPU 32 determines that the display operation panel 16 is in the closed state. That is, in the region on the connection portion side of the touch panel 20, when a capacity change that is greater than or equal to a predetermined area and greater than or equal to a predetermined threshold is detected, the MPU 32 determines that the display operation panel 16 is in the closed state.

  When the user operates the display operation panel 16 in the closed state, the touch sensor of the touch panel 20 approaches the rear exterior cover 24 in order from the side closer to the rotation axis A of the hinge mechanism 14. In the middle of the closing operation, the display operation panel 16 and the rear exterior cover 24 have the positional relationship illustrated in FIG. At this time, in the touch panel 20, the sensor group closer to the hinge mechanism 14 is closer to the rear exterior cover 24 than the sensor group farther from the hinge mechanism 14. The capacitance detected by each sensor group is determined according to the distance between each sensor group and the back exterior cover 24, and satisfies the relationship of Expression (1) as the tendency. In this way, by defining the relationship between the capacitances of each sensor group as a determination condition for the close detection, it is possible to reduce the possibility of erroneously determining the open state as the closed state due to touch input detection not intended by the user during normal camera operation. it can.

  FIG. 11 shows a flowchart of open / close detection control by comparison of the capacitances C1 to C7. The processing shown in FIG. 11 is realized by developing a control program stored in the nonvolatile memory 34 in the RAM 36 and executing it by the MPU 32.

  In S1101, the MPU 32 turns on the touch panel 20, and in S1102, the MPU 32 determines whether or not the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2. When the capacitance of the entire surface of the touch panel 20 exceeds the second capacitance threshold Th2 (S1102), the display operation panel 16 is in the closed state, and the MPU 32 performs processing for the closed state (FIG. 8). The process proceeds to S801 or S901 in FIG.

  When any one of the capacitances of the touch panel 20 does not exceed the second capacitance threshold Th2 (S1102), the display operation panel 16 is not in the closed state. In this case, the MPU 32 turns on the illumination light source of the image display panel 18 by the display control unit 38 in S1103, and proceeds to the processing for the open state after S1104.

  In step S <b> 1104, the MPU 32 determines whether there has been a change in capacitance in all the touch sensors of the sensor group 1014 of the touch panel 20. If there is a change in capacitance in all the touch sensors of the sensor group 1014 (S1104), the MPU 32 proceeds to S1105, otherwise proceeds to S1108.

  In S1105, the MPU 32 compares the capacitances C1 to C7 of the sensor groups 1002 to 1014 and checks whether or not the relationship of Expression (1) is satisfied. When the electrostatic capacitances C1 to C7 satisfy the relationship of the expression (1) (S1106), the MPU 32 determines that the display operation panel 16 is closed, that is, moved to the closed state, and the display on the image display panel 18 is performed in S1107. Turn off the light. Then, the MPU 32 proceeds to the process for the closed state (S801 in FIG. 8 or S901 in FIG. 9). When the relationship of Formula (1) is not satisfied (S1106), the MPU 32 returns to S1104.

  In S1108, the MPU 32 determines whether or not the capacitance of the area of the touch panel 20 that is equal to or larger than the predetermined area exceeds the second capacitance threshold Th2. If the second capacitance threshold Th2 is exceeded (S1108), the MPU 32 determines that an input not intended by the user has been made, and proceeds to S1109. In S1109, the MPU 32 disables touch input to the touch panel 20 via the input operation control unit 40, and returns to S1104. By doing so, it is possible to prevent erroneous input unintended by the user, for example, when touch input is detected by touching the touch panel 20 against the user's abdomen when the user lowers the camera from the neck. At this time, the display of the image display panel 18 is maintained without being turned off. Instead of disabling touch input, it is substantially the same if the MPU 32 ignores touch input during that time.

  When the second capacitance threshold Th2 is not exceeded (S1108), the MPU 32 proceeds to S1110. In S <b> 1110, the MPU 32 determines whether or not there is a region where the capacitance of the touch panel 20 exceeds the first capacitance threshold Th <b> 1. If there is a region exceeding the first capacitance threshold Th1 (S1110), the MPU 32 determines that the input is a touch input by the user, and performs an input process according to the region exceeding the first capacitance threshold Th1 in S1111. Do. In other words, the MPU 32 executes processing according to the touched position (exceeding the first capacitance threshold th1) and the type of touch operation. For example, when the touch position is the display position of the touch icon and the touch position leaves without moving (when the type of touch operation is a tap), the MPU 32 executes the function assigned to the touched icon. To do. For example, in response to a tap on a menu icon that opens the setting change menu, the MPU 32 opens the setting change menu. When tapped on the live view, the MPU 32 performs touch AF for adjusting AF (autofocus) to the tap position. When the type of touch operation is drag or flick (both operations that move the touch position while touching), the MPU 32 performs a process of scrolling the display according to the movement of the touch position by drag or flick.

  When there is no region exceeding the first capacitance threshold Th1 (S1110), the MPU 32 proceeds to S1112. In step S <b> 1112, the MPU 32 determines whether or not the camera operation has been turned off by the input operation unit 22. If a camera power-off operation has been performed (S1112), the MPU 32 controls a power supply circuit (not shown) to turn off the camera 10 in S1113, and the flow shown in FIG. When there is no camera power-off operation (S1112), the MPU 32 returns to S1104.

  By the above-described control, the state change from the open state to the closed state can be detected without providing the mechanical or electromagnetic means for detecting the state change of the display / operation panel 16 from the open state to the closed state. According to this detection result, the illumination of the image display panel 18 is turned off, and the touch panel 20 is turned off as necessary, so that power consumption can be reduced.

  In S1104, it is determined whether or not the capacitance of all the touch sensors of the capacitance C7 shows a change of a predetermined value or more. Instead, whether or not the capacitance C7 exceeds the second capacitance threshold Th2. You may determine whether. In this case, the MPU 32 determines whether the capacitances C1 to C7 of the sensor groups 1002 to 1014 satisfy the relationship of the formula (1) when the capacitance C7 of the sensor group 1014 exceeds the second capacitance threshold Th2. I will investigate.

  In the present embodiment, the touch sensors on the entire surface of the touch panel 20 are grouped into seven sensor groups for every two rows and are used as elements for determining the close detection. However, the touch sensors may not be the entire surface, and two or more sensor groups may be used. Any number of groups is acceptable.

Formula (1), which is a determination formula for the closed state,
C1 ≧ C2 ≧ C3 ≧ C4 ≧ C5 ≧ C6 ≧ C7 (2)
It may be changed as follows. Further, in order to increase the accuracy of the closing detection, the capacitances C1 to C7 are measured twice, and the capacitances C1 to C7 of each sensor group increase while maintaining the relationship of the formula (1) or (2). The display operation panel 16 may be determined to be in the closed state.

  When capacitance changes occur in the seventh sensor group 1014 farthest from the rotation axis A, the capacitances C1 to C7 are compared. The electrostatic capacity of other sensor groups such as the sixth sensor group 1012 is compared. When a change in capacitance occurs, comparison of capacitance may be started, or these may be used in combination. For example, when a significant change is detected in the electrostatic capacitances at all locations of the sixth sensor group 1012, the electrostatic capacitances C1 to C6 of the sensor groups 1002 to 1012 are compared. After the capacitances C1 to C6 satisfy the formula (1) or the formula (2), a change in the capacitance of the seventh sensor group 1014 is detected, and the capacitances C1 to C7 are calculated using the formula (1) or the formula (2). ) Is satisfied, it is determined that the display / operation panel 16 is closed. Furthermore, when the capacitance change of the sixth sensor group 1012 is detected, the capacitances C1 to C7 of the first to seventh sensor groups 1002 to 1014 may be compared. Further, when a change in the capacitance of the sixth sensor group 1012 is detected, the capacitances C2, C4, C4, C8, and C12 of the sensor groups other than the sixth sensor group, for example, the second, fourth, and sixth sensor groups 1004, 1008, and 1012 are detected. C6 may be compared.

  The above-described control performed by the MPU 32 may be performed by one hardware, or a plurality of hardware may share the processing.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. . Furthermore, each embodiment mentioned above shows only one embodiment of this invention, and it is also possible to combine each embodiment suitably.

  In the above-described embodiment, the case where the present invention is applied to a camera has been described as an example. However, this is not limited to this example, and the positional relationship between the main body unit and the monitor unit provided with the touch panel is variable. Any electronic device apparatus can be applied. That is, the present invention can be applied to a folding notebook PC (personal computer), a PDA, a cellular phone terminal having a folding or vari-angle monitor unit, and a portable image viewer. The present invention can also be applied to a printer device including a display, a digital photo frame, a music player, a game machine, an electronic book reader, and the like.

  The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

Claims (11)

A monitor unit rotatably connected to the main body unit via the connection unit;
A capacitive touch detection means for detecting a touch operation on the display means provided in the monitor unit;
In response to satisfying a specific condition including detecting a capacitance change greater than or equal to a predetermined area and greater than or equal to a predetermined threshold in the region on the connecting portion side of the touch detection means, the display means is provided for the main body portion. An electronic apparatus comprising: a control unit that determines that the position of the monitor unit has been changed to a closed state in which the display surfaces face each other and controls the display unit to hide display.   The electronic device according to claim 1, wherein when the control unit determines that the touch state is changed, the control unit performs control so that the detection by the touch detection unit is not performed.   3. The electronic device according to claim 1, wherein when the control unit determines that the display unit has been changed to the closed state, the control unit performs control so as not to execute a process according to a touch operation on the display unit.   4. The electronic device according to claim 1, wherein the area on the connection part side includes an area along a side on the connection part side in the touch detection unit. 5.   The specific condition is that, in a predetermined region on the connecting portion side of the touch detection means, after detecting a capacitance change that is greater than or equal to a predetermined area and greater than or equal to a predetermined threshold value, 5. The electronic device according to claim 1, comprising detecting a change in capacity equal to or greater than the predetermined threshold.   The electronic device according to any one of claims 1 to 5, wherein when the control unit determines that the closed state is lost, the display of the display unit is validated.   The electronic device according to claim 1, wherein the control unit detects a touch input to the touch detection unit with a threshold value higher than the predetermined threshold value. The control means divides the plurality of touch sensors included in the touch detection means into a plurality of sensor groups according to the distance from the connecting portion in order to determine the closed state,
When the control means detects a change in capacitance of a predetermined sensor group separated from the connecting portion, the control unit performs electrostatic between the predetermined sensor group and one or more sensor groups other than the predetermined sensor group. comparing the capacity, when there the large capacitance relationship of the sensors closer to the connecting portion, according to any one of claims 1 to 7, characterized in that to determine that in the closed state Electronic equipment. A monitor unit rotatably connected to the main body unit via the connection unit;
A method of controlling an electronic device having a capacitive touch detection unit that detects a touch operation on a display unit provided in the monitor unit,
A determination step of determining whether or not a specific condition including detecting a change in capacitance of a predetermined area or more and a predetermined threshold value or more is detected in a region on the connecting portion side of the touch detection unit;
When the specific condition is satisfied, it is determined that the position of the monitor unit has been changed to the closed state in which the display surface of the display unit faces the main body unit, and the display of the display unit is not displayed. And a control method for the electronic device.   The program for functioning a computer as each means of the electronic device as described in any one of Claims 1 thru | or 8.   A computer-readable storage medium storing a program for causing a computer to function as each unit of the electronic device according to any one of claims 1 to 8.

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