JP2014175158A - Input device and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable use of an input device only by a contact detection switch if a depression detection switch becomes faulty, in the input device having the depression detection switch of an operation button and the contact detection switch to the operation button.SOLUTION: The input device includes: an operation button composed of a key top 3 and a key top base 4; a first switch SW1 for detecting the depression of the operation button; a second switch SW2 for detecting contact to the operation button; and a control unit 5 for inputting information corresponding to the operation button when the first switch SW1 is in a detection state while the second switch SW2 is in an abnormal state. The control unit 5 inputs information corresponding to the operation button when the detection state of the second switch SW2 continues for a predetermined time while the first switch SW1 is in a non-detection state.

Description

  The present invention relates to an input device for an electronic device and an electronic device including the input device.

  Conventionally, a switch device that detects pressing of an operation button by contacting a contact with a mechanical structure, and a capacitive touch that detects the touch of the operation button by detecting the capacitance of a user's finger. An input device for an electronic device including a sensing device is known (for example, see Patent Document 1). Here, the input device of Patent Document 1 is configured to be able to detect the switch device and the capacitive touch sensing device at the same time.

  In the input device of Patent Document 1, the capacitive touch sensing device operates by sensing the capacitance with the user's finger and sensing that the switch device has been pressed. Here, the capacitive touch sensing device does not sense the tip of a pencil, a touch pen, or the like.

  According to the input device of Patent Literature 1, by using both the switch device and the capacitive touch sensing device, for example, it is accidentally input when being put in a bag, a pocket, or a wallet. To prevent.

  As an input device of an electronic device, a device that displays a soft key on an operation panel and receives a predetermined operation by operating the soft key by an operator is known (for example, see Patent Document 2).

  However, since the input device of Patent Document 1 accepts input only when both the switch device and the capacitive touch sensing device sense input, when a failure occurs in the switch device, the failed component is replaced. Without replacement, the input device cannot be used.

  Here, as an event of the failure of the switch device, for example, the key top cannot be pushed in (the key cannot be lowered) due to breakage of the hinge (movable part) of the key top (mechanical part) or the like. The state of falling down).

  As other events of the failure of the switch device, there are a failure in detection of a press due to a contact failure of the switch device and a failure of the board over time such as a soldering failure.

  The present invention is an input device having a switch for detecting pressing of an operation button and a switch for detecting contact with the operation button, and can be used only with the switch for detecting contact even when the switch for detecting pressing is broken. It is an object of the present invention to provide an input device capable of performing the above.

  The present invention relates to an operation button, a first switch that detects pressing of the operation button, a second switch that detects contact with the operation button, and the second switch is in a detection state, and the first switch is in a detection state. A control unit that inputs information corresponding to the operation button when the first switch is in an abnormal state while the first switch is in an abnormal state and the operation button The information corresponding to is input.

  According to the present invention, in an input device having a switch that detects pressing of an operation button and a switch that detects contact with the operation button, even when the switch that detects pressing has failed, only the switch that detects contact is used. can do.

It is a perspective view showing an embodiment of an input device concerning the present invention. It is a perspective view of the key top base which comprises the said input device. It is a perspective view of the 2nd switch which constitutes the above-mentioned input device. It is a perspective view which shows the state which mounted the said 2nd switch in the said keytop base. It is a perspective view of the key top which comprises the said input device. It is side sectional drawing of the said input device. It is a flowchart which shows operation | movement of the said input device.

  Hereinafter, embodiments of an input device and an electronic device according to the present invention will be described with reference to the drawings.

● Input device ●
First, an embodiment of an input device according to the present invention will be described.

Configuration of Input Device FIG. 1 is a perspective view showing an embodiment of an input device according to the present invention. As shown in FIG. 1, the input device 1 includes a key top 3, a first switch SW 1, a key top base 4, a second switch SW 2, and a control unit 5 on a substrate 2.

  Here, the operation button according to the present invention includes a key top 3 as a pressed surface and a key top base 4 as a switch pressing portion extending from the back surface of the key top 3 to the inside of the apparatus main body to be described later. The

  The substrate 2 is various substrates such as a printed circuit board. On the substrate 2, the first switch SW1, the second switch SW2, and the control unit 5 are placed.

  The first switch SW1 is a so-called hard key switch. The first switch SW1 detects that the key top 3 is pressed by a contact (not shown) via the key top base 4 as will be described later.

  FIG. 2 is a perspective view of the key top base 4. As shown in the figure, the key top base 4 is disposed on the first switch, and transmits the input from the operator to the first switch SW1. The key top base 4 also functions as a base for mounting the second switch SW2.

  FIG. 3 is a perspective view of the second switch SW2. As shown in the figure, the second switch SW2 includes a detection unit SW2a that detects contact of the operator's finger or the like with the key top 3, such as a capacitance switch.

  The second switch SW2 is formed of a flexible material such as FPC (Flexible Printed Circuits) that deforms in response to the key top 3 being pressed.

  FIG. 4 is a perspective view showing a state in which the second switch SW2 is placed on the key top base 4. As shown in FIG. As shown in the figure, the second switch SW2 is placed on the top of the key top base 4, and the key top 3 is placed on the top of the second switch SW2, so that the input to the key top 3 is the first switch. In addition to SW1, it is also transmitted to the second switch SW2.

  FIG. 5 is a perspective view of the key top 3. As shown in the figure, the key top 3 is exposed to the outside of the casing (not shown) of the input device 1, detects the contact of the operator's finger with the key top 3, and accepts input from the operator.

  FIG. 6 is a side view of the input device 1. As shown in the figure, the first switch SW1, the second switch, and SW2 are provided in the device body 6 (housing) of the input device 1.

  The key top 3 is attached to the upper part of the key top base 4, is exposed to the outside of the apparatus main body 6, and receives input from the operator's finger 10.

  The key top base 4 is attached to the attachment hole 7 of the apparatus main body 6. The key top base 4 presses the fixed contact SW <b> 1 a of the first switch SW <b> 1 by an input via the key top 3.

  The first switch SW1 includes a movable contact SW1b provided at the tip of the keytop base 4 that is movable when the keytop base 4 is pressed, and a movable contact SW1b that is pressed when the keytop base 4 is pressed via the keytop 3. And a fixed contact SW1a in contact with.

  The fixed contact SW1a is disposed inside the apparatus main body 6 and is provided on the substrate 2 on which a circuit pattern of an electric circuit is formed.

  Here, the first switch SW1 can detect the pressing of the key top 3 by opening and closing an electric circuit (not shown) by moving the movable contact SW1b and the fixed contact SW1a.

  The control unit 5 is, for example, a CPU (Central Processing Unit) having a function of executing a program for the operation of the input device 1 described later. The control unit 5 inputs information corresponding to the key top 3 when the first switch SW1 is in the detection state while the second switch SW2 is in the detection state.

  That is, in the input device 1, the first switch SW1 is in a detection state (a state in which the fixed contact SW1a and the movable contact SW1b are in contact), and the second switch SW2 is in a detection state (a state in which a finger contacts the key top 3). At this time, information corresponding to the key top 3 is input.

  The control unit 5 invalidates the detection result of the first switch SW1 when the first switch SW1 is in the detection state while the second switch SW2 is in the non-detection state. That is, when the first switch SW1 is in the detection state while the second switch SW2 is in the non-detection state, the input device 1 does not reflect the subsequent detection result of the first switch SW1 in the input of information.

  Further, the control unit 5 inputs information corresponding to the key top 3 when the detection state of the second switch SW2 continues for a predetermined time while the first switch SW1 is in the non-detection state.

  That is, the input device 1 inputs information corresponding to the key top 3 when the first switch SW1 is in the non-detection state and the detection state of the second switch SW2 continues for a predetermined time. Here, the non-detection state of the first switch SW1 is a state where the fixed contact SW1a and the movable contact SW1b are not in contact with each other, or a detection result of the first switch SW1 is invalidated.

  The control unit 5 may not use a CPU as long as it can perform an operation based on an input signal or long press of an input device according to the present invention described later.

FIG. 7 is a flowchart showing the operation of the input device 1. In the figure, the state where the first switch SW1 is pressed is ON, and the state where the first switch SW1 is not pressed is OFF.

  In FIG. 7, the case where the second switch SW2 detects contact is set to ON, and the case where the second switch SW2 does not detect contact is set to OFF. Further, a state in which at least one of the first switch SW1 and the second switch SW2 is in a failure state, or a state in which the input is continued due to being pressed is referred to as an abnormal mode (abnormal state).

  The control unit 5 determines whether the state of the second switch SW2 is ON or OFF (S101).

  When the state of the second switch SW2 is ON, the control unit 5 determines whether the state of the first switch SW1 is ON or OFF (S102).

  When the state of both the first switch SW1 and the second switch SW2 is ON, the control unit 5 determines whether the ON state of both switches continues for a predetermined time (S103).

  When the ON state of both the first switch SW1 and the second switch SW2 continues for a predetermined time (S103: YES), the control unit 5 determines that the switch operation is normal. At this time, the control unit 5 inputs information (information corresponding to the key top 3) corresponding to the first switch SW1 and the second switch SW2 (S104). When the process of S104 ends, the control unit 5 returns to the process of S101.

  On the other hand, when the ON state of both the first switch SW1 and the second switch SW2 does not continue for a predetermined time (S103: NO), the control unit 5 has an abnormal switch operation of both the first switch SW1 and the second switch SW2. The mode is determined (S105).

  Here, in S105, the control unit 5 gives an abnormality to the operator via an output device (LED (Light Emitting Diode), sound, liquid crystal display, etc.) (not shown) of the electronic device to which the input device 1 is connected. Notify that. Here, the output device corresponds to the notification unit in the present invention.

  When the process of S105 ends, the control unit 5 returns to the process of S101 or interrupts the process.

  Further, in the following description, when the control unit 5 has already determined that it is in the abnormal mode, the process of determining that it is in the abnormal mode is omitted, and the process returns to S101 or the process is interrupted. .

  In S102, when it is determined that the state of the first switch SW1 is OFF, the control unit 5 determines whether the state of both switches (SW1: OFF, SW2: ON) continues for a predetermined time ( S106).

  When the ON state of only the second switch SW2 continues for a predetermined time (S106: YES), the control unit 5 determines that the first switch SW1 has failed, and the long press operation mode of the second switch SW2 (S107). Here, the long press operation mode is a mode in which information corresponding to the second switch SW2 is input when the detection state of the second switch SW2 is continued for a predetermined time. The predetermined time is stored in storage means (not shown) in the input device 1.

  After shifting to the long press operation mode, the control unit 5 determines whether or not the state of both switches (SW1: OFF, SW2: ON) continues for a predetermined time (S108).

  When the state of both switches (SW1: OFF, SW2: ON) continues for a predetermined time (for example, S108: YES), the control unit 5 determines that the abnormal mode is set, and switches the output device of the electronic device. The operator is notified of the abnormality via the network (S109). Here, examples of the state of the second switch SW2 include a case where the second switch SW2 is kept pressed. When the process of S109 ends, the control unit 5 returns to the process of S101 or interrupts the process.

  On the other hand, when the state of both switches does not continue for a predetermined time (S108: NO), since the first switch SW1 has already failed, the control unit 5 is based on the detection state of the second switch SW2. Then, information corresponding to the second switch SW2 is input (S110). When the process of S110 ends, the control unit 5 returns to the process of S101.

  In the process of S106, when the state of both switches does not continue for a predetermined time (S106: NO), when the first switch SW1 is in a non-detection state due to a failure, or the first switch SW1 is already in the abnormal mode. There are cases where it is invalidated.

  Here, the control unit 5 determines whether or not the first switch SW1 is disabled (S111). When the first switch SW1 is invalidated (S111: YES), the control unit 5 inputs information corresponding to the second switch SW2 (S112).

  In addition, when the first switch SW1 is not invalidated (the first switch SW1 is in a non-detection state due to a failure) (S111: NO), the control unit 5 also turns off the information input to the second switch SW2. Therefore, the information corresponding to the second switch SW2 is not accepted (S113).

  When the process of S112 or S113 ends, the control unit 5 returns to the process of S101.

  In the process of S101, when determining that the state of the second switch SW2 is OFF, the control unit 5 determines whether the state of the first switch SW1 is ON or OFF (S114). In this state, for example, the key top 3 is touched with an object other than a finger such as a pen tip.

  When the state of the first switch SW1 is ON and the state of the second switch SW2 is OFF, the control unit 5 determines whether or not the state of both switches (SW1: ON, SW2: OFF) continues for a predetermined time. Judgment is made (S115).

  When the ON state of the first switch SW1 and the non-detection state of the second switch SW2 are continued for a predetermined time (S115: YES), the control unit 5 determines that the first switch SW1 is in the abnormal mode, and The detection result of 1 switch SW1 is invalidated (S116).

  The control unit 5 cancels the input information when the detection result of the first switch SW1 is invalidated after the information corresponding to the key top 3 is input.

  Further, in S116, the control unit 5 notifies the operator of an abnormality via the output device of the electronic device. When the process of S116 ends, the control unit 5 returns to the process of S101 or interrupts the process.

  On the other hand, when the state of both the first switch SW1 and the second switch SW2 does not continue for a predetermined time (S115: NO), the control unit 5 determines that there is no input from the operator from the first switch SW1. The operation information corresponding to the first switch SW1 is received (S117). When the process of S117 ends, the control unit 5 returns to the process of S101.

  According to the input device 1 described above, even if the first switch SW1 has failed, information can be input only by detecting the failure of the second switch SW2 after detecting the failure. Here, although the first switch SW1 is disposed inside the apparatus main body 6, the second switch SW2 is exposed to the outside of the apparatus main body 6. Therefore, even if the first switch SW1 breaks down, the apparatus main body 6 is exposed. Input of information can be accepted without opening the box.

● Electronic equipment ●
Next, an embodiment of an electronic device according to the present invention will be described.

  An electronic apparatus according to the present invention is an apparatus that includes an input device operated by an operator and operates based on information input from the input device.

  Here, the input device is the input device 1 according to the present invention described above.

  According to the electronic device described above, even if the first switch SW1 is broken, it is possible to input information only by detecting the failure of the second switch SW2 after detecting the failure. Here, although the first switch SW1 is disposed inside the apparatus main body 6, the second switch SW2 is exposed to the outside of the apparatus main body 6. Therefore, even if the first switch SW1 breaks down, the apparatus main body 6 is exposed. Input of information can be accepted without opening the box.

1: Input device 2: Substrate 3: Key top 4: Key top base 5: Control unit 6: Device body SW1: First switch SW1a: Fixed contact SW1b: Movable contact SW2: Second switch

Special table 2010-533030 gazette JP 2011-051164 A

Claims (9)

Operation buttons,
A first switch for detecting depression of the operation button;
A second switch for detecting contact with the operation button;
A control unit that inputs information corresponding to the operation button based on detection states of the first switch and the second switch;
With
The control unit inputs information corresponding to the operation button when the detection state of the second switch continues for a predetermined time while the first switch is in an abnormal state.
An input device characterized by that. The control unit invalidates a detection result of the first switch when the first switch is in a detection state while the second switch is in a non-detection state.
The input device according to claim 1. The first switch includes a movable contact that moves in response to pressing of the operation button, and a fixed contact that contacts the movable contact when the operation button is pressed, and the movable contact and the fixed contact Detects that the operation button is pressed by opening and closing the electric circuit due to contact and separation.
The input device according to claim 1 or 2. The first switch and the second switch are provided in the apparatus body,
The operation button includes a key top as a pressed surface, and a switch pressing portion extending from the back surface of the key top to the inside of the apparatus main body.
The key top is exposed to the outside of the apparatus body,
The movable contact is provided at the tip of the switch pressing part,
The fixed contact is disposed inside the apparatus main body, and is provided on a substrate on which a circuit pattern of an electric circuit that is opened and closed when the movable contact and the fixed contact are opened and closed is formed,
The second switch detects contact with the key top;
The input device according to claim 3. The control unit cancels the input information when the detection result of the first switch is invalidated after inputting information corresponding to the operation button.
The input device according to claim 2. The control unit inputs information corresponding to the operation button based on the detection state of the second switch while the detection result of the first switch is invalidated.
The input device according to claim 2. The control unit inputs information corresponding to the operation button only when the detection state of the second switch continues for a predetermined time.
The input device according to claim 6. When the control unit invalidates the detection result of the first switch, the control unit includes a notification unit that notifies that the detection result of the first switch is invalidated.
The input device according to claim 2. An input device operated by an operator is provided.
An electronic device that operates based on information input from the input device,
The input device is the input device according to any one of claims 1 to 8.
An electronic device characterized by that.

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