JP2008310546A - Touch panel input device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a touch panel input device that generates vibration as a feeling at panel operation and has a function of eliminating a vibration noise. <P>SOLUTION: The touch panel input device includes: an LCD display part 1 for displaying an image; an LCD display control part 2 for performing image display control; a touch panel 3 disposed on the upper side of the LCD display part 1; a touch panel detection part 4 for detecting the depression and the position of the depression when the touch panel 3 is depressed for input; a vibration element 5 disposed on the lower side of the LCD display part 1; a vibration element control part 6 for controlling the vibration of the vibration element 5; a speaker 7 for outputting a sound for eliminating a vibration noise outputted from the vibration element 5; a speaker control part 8 for controlling the action of the speaker 7; a memory 9 for storing sound information 11 of the sound outputted from the speaker 7; and a CPU 10 for inputting the detected signal from the touch panel detection part 4 and controlling the LCD display control part 2, the vibration element control part 6, and the speaker control part 8. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a touch panel input device used in an electronic device such as a portable game machine, a PDA, or a mobile phone.

  Some touch panel type input devices having a conventional liquid crystal display device have a function for vibrating the input device itself by an input operation in order to obtain a sense of operation (see Patent Document 1 below). Such a touch panel input device includes a touch panel, a liquid crystal display unit (LCD), a vibration element, a central processing unit (CPU), a touch panel detection unit, an LCD display control unit, and a vibration element control unit.

  When the user presses the surface of the touch panel, the touch panel detection unit detects that the touch panel has been pressed and the position on the touch panel (the position on the X and Y coordinates) that has been pressed. To send. The CPU compares the position of the operation button displayed on the LCD through the LCD display control unit with the position notified from the touch panel detection unit. If the comparison result is within the operation button area, the CPU instructs the vibration element control unit to control the vibration element.

JP 2000-137576 A

  However, according to the conventional touch panel input device, the touch panel input device itself vibrates due to an input operation, which causes a problem that vibration sound is generated. Although it is convenient to have a vibration sensation by providing a vibration element, there is a demand to use it with the vibration function turned off because the vibration sound is annoying.

  Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to provide a touch panel input device having a function of removing vibration sound at the same time that vibration is obtained as a feeling when operated.

  The touch panel input device according to the present invention includes an LCD display unit that displays an image, an LCD display control unit that performs display control of an image displayed on the LCD display unit, a touch panel that is installed above the LCD display unit, A touch panel detection unit that detects pressing and detecting a position when a pressing input is made on the touch panel, a vibration element installed at a lower portion of the LCD display unit, and vibration of the vibration element based on the pressing input to the touch panel A vibration element control unit that controls operation, a speaker that outputs sound for removing vibration sound output from the vibration element, and a speaker control unit that controls the operation of the speaker based on a pressing input to the touch panel Storing voice information of the voice output from the speaker and sending it to the speaker control unit, and a detection signal from the touch panel detection unit Type includes the LCD display control unit, the vibrating element control unit, and a CPU (central processing unit) for controlling the speaker control unit.

  According to the touch panel input device of the present invention, when the touch panel is operated, the vibration element vibrates to generate vibration sound, and the sound for removing the vibration sound of the vibration element is output from the speaker. Can be drowned out by interference with the output sound. Thereby, the user can operate comfortably without worrying about vibration noise. Further, since the delay time is set, the start time of the vibration sound and the output sound from the speaker can be matched, and the sound can be interfered with high accuracy.

<Embodiment 1>
FIG. 1 is a diagram showing a configuration of a touch panel input device according to Embodiment 1 of the present invention. The touch panel input device is installed on a liquid crystal display unit 1 for displaying an image (hereinafter referred to as an LCD display unit 1), an LCD display control unit 2 for controlling display of an image displayed on the LCD display unit 1, and an upper part of the LCD display unit 1. Touch panel 3, touch panel detection unit 4 that performs detection and position detection when a press input is made to touch panel 3, vibrator 5 (hereinafter referred to as vibration element 5) installed below LCD display unit 1, touch panel 3, a vibration element control unit 6 that controls the vibration operation of the vibration element 5 based on a pressing input to the vibration element 3, a speaker 7 that outputs sound for removing vibration sound output from the vibration element 5, and a pressing input to the touch panel 3. The speaker control unit 8 that controls the operation of the speaker 7 based on the above, the sound information 11 (phase θ, frequency f, amplitude P, delay time τ) of the sound output from the speaker 7 is stored, and the speaker A central processing unit 10 (hereinafter referred to as a CPU 10) that inputs a detection signal from a memory 9 to be sent to the control unit 8 and a detection signal from the touch panel detection unit 4 and controls the LCD display control unit 2, the vibration element control unit 6, and the speaker control unit 8. Is provided.

  In the present embodiment, the touch panel 3 is described as a resistive film type touch panel 3 made of a film and plastic, but the system itself may be anything. The liquid crystal display unit 3 may be a display device other than that. The vibrator 5 may be another vibration element 5.

  FIG. 2 is a flowchart showing the operation of the touch panel input device. The operation of the touch panel input device will be described with reference to FIGS. First, the CPU 10 sends display image data to the LCD display control unit 2 and sends an image display instruction (S-1). The LCD display control unit 2 receives display image data from the CPU 10 and displays an arbitrary display image such as an operation button on the LCD display unit 1 (S-2).

  When the touch panel 3 is pressed (S-3), the film side and plastic side electrodes of the touch panel 3 come into contact with each other, and the X-axis and Y-axis voltage values are input to the touch panel detection unit 4 (S-4). The touch panel detection unit 4 converts the voltage value into an X coordinate and a Y coordinate of a digital value and outputs the converted value to the CPU 10 (S-5). Here, the touch panel 3 is installed on the upper part of the LCD display unit 1 and has a transparent configuration so that a display image displayed on the LCD display unit 1 can be read.

  The CPU 10 compares the X and Y coordinates with the position of the display image data displayed on the LCD display unit 1 (S-6), and the pressed position of the touch panel 3 responds such as an operation button for the display image data. If it is determined that it is within the power region (S-7), an instruction is sent to the vibration element controller 6 to vibrate the vibration element 5 (S-8). The vibration element control unit 6 vibrates the vibration element 5 in accordance with a signal from the CPU 10, and simultaneously generates vibration sound (S-9).

  If the CPU 10 determines that the position of the pressed touch panel 3 is within a response area such as an operation button for display image data (S-7), the CPU 10 reads the audio information 11 (phase θ, frequency f, amplitude from the memory 9). P, delay time τ) is called, the audio information 11 is transferred to the speaker control unit 8, and an instruction is issued from the speaker 7 to output audio according to the audio information 11 (S-10). The speaker control unit 8 outputs an audio signal according to the characteristics of the audio information 11 to the speaker 7 and outputs audio from the speaker 7 with a delay time τ (S-11).

  Here, since the sound information 11 (phase θ, frequency f, amplitude P, delay time τ) needs to have a characteristic of drowning the vibration sound of the vibration element 5, the phase θ and the frequency f are vibration sounds of the vibration element 5. Are the same phase and the same frequency, and the amplitude P is an amplitude having a negative characteristic inverted with respect to the amplitude of the vibration sound. For the delay time τ, a time difference between the rising response time of the vibration element 5 and the rising response time of the speaker 7 is set. This audio information 11 is assumed to be stored in the memory 9 in advance.

  FIG. 3 is a diagram showing observed waveforms of the sound collection signal waveform 15 of the vibration element 5 and the output signal waveform 16 of the speaker 7 in order to determine the delay time τ. The delay time τ of the vibration element 5 is obtained by collecting the vibration sound of the vibration element 5 with a microphone and observing the rise time of the collected signal and the rise time of the speaker 7 when the delay time τ = 0 as a waveform. The difference in the rise time of this signal is determined as the delay time τ and written in the memory 9 in advance.

  From the above, the vibration element 5 vibrates when the touch panel 3 is operated, and vibration sound is generated from the vibration element 5 and sound for removing the vibration sound of the vibration element 5 is output from the speaker 7. 7 can be erased by the interference with the output sound from 7. Thereby, the user can operate comfortably without worrying about vibration noise. In addition, since the delay time is set, the vibration sound and the start time of the output sound from the speaker 7 can be combined, so that the sound can be accurately interfered.

<Embodiment 2>
FIG. 4 is a diagram showing a configuration of the touch panel input device according to Embodiment 2 of the present invention. The difference from the first embodiment is that the microphone 12 that collects the vibration sound generated by the vibration element 5, the synthesized sound of the sound output from the speaker 7, and the voice information is generated from the synthesized sound collected by the microphone 12. The correction circuit unit 13 is further provided.

  FIG. 5 is a flowchart showing the operation of the touch panel input device. The operation of the touch panel input device will be described with reference to FIGS. Here, since S-9 and S-11 are the same as those in the first embodiment, description thereof is omitted. Simultaneously with the generation of vibration sound from the vibration element 5 (S-9) and the output of sound from the speaker 7 (S-11), the microphone 12 generates a combined sound of the vibration sound generated from the vibration element 5 and the sound output from the speaker 7. The collected signal is input to the correction circuit unit 13 (S-12). Synthetic sound data 14 (phase θ2, frequency f2, amplitude P2, delay time τ2) is generated from the characteristics of the signal input to the correction circuit unit 13, and stored in the correction circuit unit 13 (S-13).

  Next, when the touch panel 3 is pressed (S-14) and it is determined that the position of the pressed touch panel 3 is within an area to be responded such as an operation button for display image data (S-15), the CPU 10 An instruction is sent to the control unit 6 to vibrate the vibration element 5 (S-21). The vibration element control unit 6 outputs a drive signal to the vibration element 5 based on a signal from the CPU 10 (S-22), vibrates the vibration element 5, and simultaneously generates vibration sound (S-23).

  If the touch panel 3 is pressed (S-14) and the position of the pressed touch panel 3 is determined to be within an area to be responded such as an operation button for display image data (S-15), the CPU 10 reads from the memory 9. The voice information 11 (phase θ, frequency f, amplitude P, delay time τ) and the synthesized sound data 14 (phase θ2, frequency f2, amplitude P2, delay time τ2) are called from the correction circuit 13, and the voice information 11 and synthesized voice data are called. 14 is transferred to the speaker control unit 8 (S-16). In addition, the CPU outputs sound from the speaker 7 according to the characteristics of the corrected data 15 (phase θ3, frequency f3, amplitude P3, delay time τ3) obtained by adding the sound information 11 and the synthesized sound data 14 to the speaker control unit 8. Is instructed to do so (S-17). The speaker control unit 8 adds the negative value of the voice information 11 and the synthesized sound data 14 to generate corrected data 15 (S-18). The speaker control unit 8 outputs an audio signal according to the characteristics of the corrected data 15 to the speaker 7 and outputs audio with a delay time τ3 (S-19, S-20).

  FIG. 6 is a diagram showing an operation for generating the synthesized sound data 14. FIG. 6A is a diagram showing an operation of generating the synthesized data 14 from the vibration sound of the vibration element 5 and the sound information 11. The synthesized sound waveform 18 is obtained by synthesizing the vibration sound waveform 16 of the vibration element 5 and the sound waveform 17 according to the characteristics of the sound information 11 output from the speaker 7. After being collected from the microphone 12, the correction circuit 13 performs A / D conversion, and the phase θ2, the frequency f2, and the amplitude P2 are measured as digital values. The delay time τ2 is calculated by measuring the time exceeding the amplitude threshold. This phase θ 2, frequency f 2, amplitude P 2, and delay time τ 2 are used as synthesized data 14.

  FIG. 6B is a diagram illustrating an operation of generating the composite data 22 from the vibration sound of the vibration element 5 and the corrected data 15. The corrected data 15 is obtained by adding the negative value of the synthesized data 14 (phase θ2, frequency f2, amplitude P2, delay time τ2) to the audio information 11 (phase θ, frequency f, amplitude P, delay time τ). can get. The data after the addition is set in the speaker control unit 8 as corrected data 15 (phase θ3, frequency f3, amplitude P3, delay time τ3), and according to the corrected data 15 at the same time as the vibration sound of the vibration element 5 is generated. Sound is output from the speaker 7. A synthesized sound waveform 21 is obtained by synthesizing the vibration sound waveform 19 of the vibration element 5 and the sound waveform 20 output from the speaker 7 at this time. The waveform 21 of the synthesized sound is collected from the microphone 12 and then A / D converted by the correction circuit unit 13, and the phase θ2, the frequency f2, and the amplitude P2 are measured as digital values. The delay time τ2 is calculated by measuring the time exceeding the amplitude threshold. This phase θ 2, frequency f 2, amplitude P 2, and delay time τ 2 are used as synthesized data 22.

  As described above, by further including the microphone 12 and the correction circuit unit 13, the speaker 7 can output the sound corrected for the variation in vibration sound for each housing and the difference in hand size and gripping method that is different for each user. Since the output is performed, it is possible to enhance the effect of removing the vibration sound and to operate more comfortably.

<Embodiment 3>
The touch panel input device according to the present embodiment further includes a clock circuit, and the clock circuit is connected to the CPU 10 and has a periodic correction function. The operation will be described below using a specific example. When the correction time of the vibration sound of the vibration element 5 is set to 7:00 every day by the clock circuit, correction according to the control flow shown in FIG. 5 is performed when the operation is performed for the first time after 7:00. The speaker control unit 8 inputs sound having characteristics according to the corrected data 15 (phase θ3, frequency f3, amplitude P3, delay time τ3) to the speaker 7, and the sound is output from the speaker 7. Other configurations and operations are the same as those of the second embodiment, and thus description thereof is omitted. Here, the periodic correction function is not limited to a clock circuit, and may be a periodic timer.

  As described above, since the function of periodically correcting the audio information 11 is provided, it is possible to more accurately suppress the influence of the aging of the housing and the variation of the vibration sound caused by use by a plurality of users.

<Embodiment 4>
The touch panel input device according to the present embodiment displays a menu button for correction on the display image data displayed on the LCD display unit 1, and when the menu button for correction is pressed, correction according to the control flow shown in FIG. It is the structure which performs. Since other configurations and operations are the same as those of the second embodiment, description thereof is omitted. Here, the menu button for correction may be a mechanical switch.

  As described above, since the function of periodically correcting the audio information 11 is provided, it is possible to more accurately suppress the influence of the aging of the housing and the variation of the vibration sound caused by use by a plurality of users.

  As an application example of the present invention, the present invention can be used for a terminal device such as a game device or a mobile phone device that performs a touch panel operation.

It is the figure which showed the structure of the touchscreen input device in Embodiment 1 of this invention. It is the flowchart which showed operation | movement of the touchscreen input device in Embodiment 1 of this invention. It is the figure which showed the observation waveform for determining delay time (tau) in Embodiment 1 of this invention. It is the figure which showed the structure of the touchscreen input device in Embodiment 2 of this invention. It is the flowchart which showed operation | movement of the touchscreen input device in Embodiment 2 of this invention. It is the figure which showed the operation | movement which produces | generates the synthetic sound data in Embodiment 2 of this invention.

Explanation of symbols

  1 LCD display unit, 2 LCD display control unit, 3 touch panel, 4 touch panel detection unit, 5 vibration element, 6 vibration element control unit, 7 speaker, 8 speaker control unit, 9 memory, 10 CPU, 11 audio information, 12 microphone, 13 Correction circuit section, 14, 22 synthesized data, 15 corrected data, 16, 19 vibration sound waveform, 17, 20 speech waveform, 18, 21 synthesized sound waveform.

Claims (8)

An LCD display for displaying images,
An LCD display control unit for controlling display of an image displayed on the LCD display unit;
A touch panel installed on top of the LCD display;
A touch panel detection unit that detects pressing and position detection when a pressing input is performed on the touch panel;
A vibration element installed at the bottom of the LCD display,
A vibration element control unit that controls a vibration operation of the vibration element based on a pressing input to the touch panel;
A speaker for outputting sound for removing vibration sound output from the vibration element;
A speaker control unit that controls the operation of the speaker based on a press input to the touch panel;
A memory for storing voice information of voice output from the speaker and sending the voice information to the speaker control unit;
A touch panel input device comprising: a CPU (central processing unit) that inputs a detection signal from the touch panel detection unit and controls the LCD display control unit, the vibration element control unit, and the speaker control unit.   The CPU controls the vibration element control unit so that the vibration element vibrates when a position of pressing input to the touch panel is within a predetermined region of an image displayed on the LCD display unit. The touch panel input device according to 1.   The CPU, when the position of pressing input to the touch panel is within a predetermined area of the image displayed on the LCD display unit, sends the audio information stored in the memory to the speaker control unit, The touch panel input device according to claim 2, wherein the speaker control unit is controlled to output sound of the sound information from the speaker. The audio information stored in the memory sets the phase, frequency, amplitude, delay time based on the vibration sound generated when the vibration element vibrates,
The phase and frequency are the same as the phase and frequency of the vibration sound, the amplitude is an inversion of the amplitude of the vibration sound, and the delay time is the rise response time of the vibration element and the rise of the speaker. The touch panel input device according to claim 1, which is a time difference in response time. A microphone for collecting a vibration sound generated by the vibration element and a synthesized sound output from the speaker;
The touch panel input device according to claim 1, further comprising: a correction circuit unit that generates voice information from the synthesized sound collected by the microphone. The CPU is
Generating corrected voice information by adding the negative value of the voice information generated by the correction circuit unit and the voice information stored in the memory;
The speaker control unit is controlled to output sound of the corrected sound information from the speaker when a position of pressing input to the touch panel is within a predetermined region of an image displayed on the LCD display unit. Item 6. The touch panel input device according to Item 5.   The touch panel input device according to claim 5, further comprising a clock unit that controls start of the operation of the correction circuit unit.   The touch panel input device according to claim 5, further comprising external input means for controlling start of operation of the correction circuit unit.

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