KR100763302B1 - An apparatus for controlling display portion using vibration motor driving signal of mobile phone and thereof - Google Patents

Abstract

An apparatus for controlling a display unit using a vibration motor drive signal of a mobile terminal and its method are provided to simultaneously and individually control the lighting and illumination of plural display elements by using a PWM(Pulse Width Modulation) signal having a pulse width varied according to a pre-set pattern as a vibration motor drive signal. A CPU(Central Processing Unit)(10) outputs a vibration motor drive signal for driving a vibration motor(30). An LED driving circuit unit(40) outputs a display control signal corresponding to the vibration motor drive signal. An LED(50) includes multiple display elements(LED1-LED4) according to a pre-set method, and blinks the display elements(LED1-LED4) according to the display control signal. The vibration motor drive signal is a PWM signal having a pulse width varied according to a pre-set pattern.

Description

An Apparatus For Controlling Display Portion Using Vibration Motor Driving Signal of Mobile Phone And Thereof}

The present invention relates to a display unit control apparatus using a vibration motor driving signal of a mobile terminal and a method thereof, and more particularly, to operate a plurality of display elements in conjunction with a vibration motor driving signal for driving a vibration motor to visually sense the tactile information. The present invention relates to an apparatus and method for simultaneously controlling the lighting and illuminance of a plurality of display elements by simultaneously providing information and using a PWM signal whose pulse width is varied according to a predetermined pattern as a vibration motor driving signal.

When a call or a message is received in a conventional portable terminal, the user can recognize the fact that the call or the message is received by using a method such as ringing, vibration, and LED lighting.

However, in the conventional portable terminal, the vibration motor and the LED are separately controlled. That is, when a call or a message is received, the vibration motor or LED is selectively operated according to the user's setting, and the vibration motor and the LED are not used in conjunction.

In particular, even in the LED lighting, only one LED is repeatedly provided for a certain time by providing a very simple way to recognize the user.

The present invention has been made to solve the above problems, an object of the present invention is linked to the vibration motor drive signal for driving the vibration motor by operating a plurality of display elements installed on one side of the portable terminal separate display device drive signal Without tactile information and visual information can be provided at the same time.

Another object of the present invention is to control the lighting and illuminance of a plurality of display elements simultaneously by using a PWM signal whose pulse width is variable according to a preset pattern as a vibration motor driving signal.

According to an aspect of the present invention for achieving the above object, a central processing unit for outputting a vibration motor drive signal for driving a vibration motor, a display driving circuit unit for outputting a display control signal corresponding to the vibration motor drive signal; A display unit control apparatus using a vibration motor driving signal of a portable terminal, characterized in that a plurality of display elements are arranged in a preset manner and include a display unit which blinks according to the display control signal.

Here, the vibration motor drive signal is preferably a PWM signal whose pulse width is variable according to a preset pattern.

In addition, the display driving circuit unit has first and second output terminals, and each of the output terminals outputs a variable output voltage different from each other according to the pulse width of the PWM signal, and the display elements include the first output terminal, the second output terminal, and It is more preferable that the number and brightness of the display elements that are connected between any two terminals of the ground terminal in the forward or reverse direction and lit according to the pulse width of the PWM signal are varied.

The output voltage of the first output terminal may be proportional to the pulse width of the PWM signal, and the output voltage of the second output terminal may be inversely proportional to the pulse width of the PWM signal.

According to another aspect of the present invention for achieving the above object, a plurality of display elements are arranged in a predetermined manner on one side of the portable terminal, the plurality of display elements in conjunction with the vibration motor drive signal for driving the vibration motor There is provided a plurality of display device control methods using the vibration motor driving signal of a portable terminal characterized in that the flashing of the control.

Here, at least two or more display elements of the plurality of display elements are connected to have different voltages across the display element, and the vibration motor driving signal is configured to at least one of at least one of a rotation speed and a rotation direction of the vibration motor according to a preset method. It is preferably output as a variable signal pattern for varying, and according to the variable signal pattern (rotational speed or rotational direction of the vibration motor) it is preferable that the illuminance of the light-emitting display device and the light-emitting display device is determined.

In addition, the vibration motor drive signal is more preferably a PWM signal whose pulse width is variable according to a predetermined pattern.

According to the present invention as described above, by operating a plurality of display elements in conjunction with the vibration motor drive signal for driving the vibration motor has the effect of providing the visual information with the tactile information at the same time without a separate display device drive signal have.

In addition, by using a PWM signal whose pulse width is variable in accordance with a predetermined pattern as the vibration motor driving signal, there is an effect that can individually control the lighting and illuminance of a plurality of display elements.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is a block diagram illustrating a conceptual configuration of an apparatus for controlling a display unit using a vibration motor driving signal of a portable terminal according to a first embodiment of the present invention.

As shown in FIG. 1, in the first embodiment of the present invention, a motor driving signal output to drive the vibration motor 30 from the CPU 10 drives the motor driving circuit unit 20 and the LED 50. It is characterized in that it is applied to the LED driving circuit unit 40 at the same time.

That is, when a user makes a call to the mobile terminal or receives a text message while the user sets the vibration to the telephone reception sound, the CPU 10 transmits a driving signal for driving the vibration motor 30 to the motor driving circuit unit 20. Thus, the vibration motor 30 is driven, and at the same time, the vibration motor driving signal is applied to the LED driving circuit unit 40.

The LED driving circuit unit 40 applies the output signal corresponding to the vibration motor driving signal to the LED 50 to drive the LED 50.

Here, it is preferable that a plurality of LEDs 50 are installed on one surface of the portable terminal.

1 illustrates that the LED driving circuit unit 40 is provided separately from the motor driving circuit unit 20, but the LED driving circuit unit 40 is omitted and the LED 50 is connected in parallel with the vibration motor 30. The LED 50 may also blink according to the output signal of the motor driving circuit unit 20, which is also included in the technical matters of the present invention.

2 is a block diagram illustrating a conceptual configuration of a display unit control apparatus using a vibration motor driving signal of a portable terminal according to a second embodiment of the present invention.

In the second embodiment, a PWM signal having a variable pulse width is used as the vibration motor driving signal, and the LED driving circuit unit 40 has two output terminals VP and VN, and the plurality of LEDs LED1 to LED4 are the first. The output terminal VP and the ground, the second output terminal (VN) and the ground, the first output terminal (VP) and the second output terminal (VN) is characterized in that the connection in the forward or reverse direction.

According to the second embodiment, since a PWM signal having a variable pulse width is used as the vibration motor driving signal, the rotation direction and rotation speed of the vibration motor 30 are varied according to the pulse width of the PWM signal, The LED (LED1 ~ LED4) which is turned on according to the rotation direction and rotation speed and the illuminance when it is turned on are controlled.

More specifically, the LED driving circuit unit 40 is designed such that the output voltages of the two output terminals VP and VN are independently changed from each other according to the pulse width pattern of the PWM signal, and accordingly, the potentials of the output terminals VP and VN are varied. And since the potential between each output terminal (VP, VN) is variable, the ON / OFF and illuminance of each LED is determined according to the potential difference across each LED.

Various circuit designs are possible in order to allow the output voltages of the two output terminals VP and VN to be independently changed in the LED driving circuit unit 40, an example of which is illustrated in FIG. 3.

3 is a circuit diagram illustrating an example of an internal configuration of the LED driving circuit unit of FIG. 2, and FIG. 4 is an output voltage of the first and second output terminals of the display driving circuit unit according to the pulse width change of the PWM signal according to FIG. 3. A graph showing the change in.

Referring to FIG. 3, since the resistor R2 and the capacitor C1 connected in parallel between the (+) input terminal and the output terminal of the LED driver 43 and the LED driver 43 operate as an inverting amplifier having an integrator structure ( +) As the pulse width (Duty) of the PWM signal input to the input terminal is larger, the output voltage (VN) forms a linear output of the pattern, and the output signal of the LED driver 43 is again an LED having the structure of an inverting amplifier Since it is connected to the input terminal of the driver 45, the output voltage VP of the LED driver 45 forms a linear output of a pattern in which the output voltage VN increases as the pulse width Duty of the PWM signal increases.

In FIG. 4, a potential difference at each point according to a pulse width change of a PWM signal applied when a DC driving voltage of 3 V is applied is shown in a graph. Here, black is the voltage of the first output terminal (VP), red is the voltage of the second output terminal (VN), blue is the potential difference between the first output terminal voltage (VP) and the second output terminal voltage (VN), green is the second output terminal voltage The potential difference between VN and the first output terminal voltage VP is shown.

Referring to FIG. 4, it can be seen that the voltage VP of the first output terminal increases linearly as the pulse width increases, and the voltage VN of the second output terminal decreases linearly as the pulse width increases.

FIG. 5 is a diagram illustrating arrangement of LEDs of various colors at an output terminal of the LED driving circuit of FIG. 3. FIG. 6 is a graph illustrating lighting regions of respective LED elements according to pulse width changes in the LED arrangement of FIG. 5.

As shown in FIG. 5, LEDs of various colors are connected between the output terminal or each output terminal of the LED driving circuit unit 40. In FIG. 5, four colors of LEDs, blue (B0, B1), yellow (Y0, Y1), green (G0, G1), and red (R0, R1), are used, and red and green LEDs have a rated driving voltage of 2V. The blue and green LEDs have a rated drive voltage of 3V.

As shown in FIG. 6, the LEDs of each color vary according to the pulse width (Duty) of the PWM signal.

For example, since the output voltage of the first output terminal VP increases in proportion to the pulse width, the red LED R0 having a rated voltage of 2V starts to light at a lower duty, and the blue LED B0 corresponds to 3V. Lights up after reaching the duty. In addition, since the output voltage of the first output terminal VP increases as the pulse width increases even after being turned on, illuminance of the LEDs R0 and B0 increases.

Since the same principle applies to the remaining LEDs, a detailed description thereof will be omitted.

It is also possible to link the LED lighting control method with the operation of the vibration motor.

For example, when the voltage between both ends applied to the vibration motor is output to have a pattern similar to that of the voltage pattern of FIG. 4, when the pulse width of the PWM signal is 50% or more, the motor rotates in the forward direction and in the 50% or less direction, the motor rotates in the reverse direction. It is possible to increase the rotational speed as the pulse width increases in the rotation of the direction.

In this case, only the red LED (R0) turns on when the vibration motor is weakly rotated in the forward rotation, and the green LED (G0), the yellow LED (Y0), and the blue LED (B0) are sequentially turned on as the rotation speed of the vibration motor is gradually increased. Lights up.

In addition, when the vibration motor is weakly rotated in reverse rotation, only the red LED (R1) is turned on, and as the rotation speed of the vibration motor is gradually increased, the green LED (G1), the yellow LED (Y1), and the blue LED (B1) are sequentially Lights up.

Therefore, when a PWM signal inputs a variable pulse width in accordance with a predetermined pattern is input, the rotational direction and rotational speed of the vibration motor can be controlled variably, and a plurality of rotational directions and rotational speeds of the vibration motor can be controlled. By controlling the blinking and illuminance of the LEDs independently and simultaneously, it is possible to simultaneously provide tactile information through vibration and visual information through the LED.

Therefore, when a call or a message is received, the vibration motor rotates in a rotational direction and a rotational speed in a predetermined pattern according to a PWM signal, and a plurality of LEDs may be displayed in a specific pattern in conjunction with the vibration motor.

Although the LED has been exemplarily described as an example of the display device, it is obvious that various display devices such as electroluminescence (EL) and electro chromic display (ECD) can be used.

1 is a block diagram illustrating a conceptual configuration of an apparatus for controlling a display unit using a vibration motor driving signal of a portable terminal according to a first embodiment of the present invention.

2 is a block diagram illustrating a conceptual configuration of a display unit control apparatus using a vibration motor driving signal of a portable terminal according to a second embodiment of the present invention.

FIG. 3 is a circuit diagram illustrating an example of an internal configuration of the LED driving circuit part of FIG. 2.

FIG. 4 is a graph illustrating changes in output voltages of the first and second output terminals of the display driving circuit unit according to the pulse width of the PWM signal according to FIG. 3.

FIG. 5 illustrates arrangement of LEDs of various colors at an output terminal of the LED driving circuit unit of FIG. 3.

FIG. 6 is a graph showing lighting regions of respective LED elements according to pulse width changes in the LED arrangement of FIG. 5.

<Description of main drawing code>

10: CPU

20: motor driving circuit part

30: vibration motor

40: LED driving circuit part

41: Enable Controller

43, 45: LED Driver

Claims (7)

A central processing unit for outputting a vibration motor driving signal for driving the vibration motor; A display driving circuit unit outputting a display control signal corresponding to the vibration motor driving signal; And And a display unit in which a plurality of display elements are arranged in a preset manner and flickering according to the display control signal. The method of claim 1, The vibration motor driving signal is a display unit control device using a vibration motor driving signal of the portable terminal, characterized in that the PWM signal is a pulse width variable according to a predetermined pattern. The method of claim 2, The display driving circuit unit has first and second output terminals, and each output terminal outputs a variable output voltage different from each other according to the pulse width of the PWM signal. The display devices may be connected in any forward or reverse direction between any one of the first output terminal, the second output terminal, and the ground terminal, such that the number and brightness of the display elements that are lit according to the pulse width of the PWM signal are variable. Display unit control device using the vibration motor driving signal of the portable terminal. The method of claim 3, wherein The output voltage of the first output terminal is proportional to the pulse width of the PWM signal, the output voltage of the second output terminal is inversely proportional to the pulse width of the PWM signal, the display unit control using the vibration motor drive signal of the portable terminal Device. A plurality of display elements are arranged on one side of the portable terminal in a preset manner, and the flickering of the plurality of display elements is controlled in synchronization with a vibration motor driving signal for driving the vibration motor. A plurality of display element control method using. The method of claim 5, At least two or more display elements of the plurality of display elements are connected to have different voltages across the display elements. The vibration motor driving signal is output in a variable signal pattern for varying at least one of the rotational speed and the rotational direction of the vibration motor according to a preset method, Control of the plurality of display elements using the vibration motor driving signal of the portable terminal, characterized in that the illumination of the display element and the illumination of the display element is determined according to the variable signal pattern (rotational speed or rotation direction of the vibration motor). Way. The method of claim 6, The vibration motor driving signal is a plurality of display elements control method using a vibration motor driving signal of a portable terminal, characterized in that the PWM signal is a pulse width is variable according to a predetermined pattern.

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