KR101961917B1 - A user interface driving device providing enhanced input feedback and an electric device using the same - Google Patents

Abstract

A touch sensing module adapted to provide a vibration motor driving unit with a control signal including information for controlling the vibration motor driving unit in response to a touch input to the touch panel; and a vibration motor driving unit for driving the vibration motor in accordance with the control signal An electronic device including a vibration motor driving unit configured to output a current is disclosed.

Description

[0001] The present invention relates to a user interface device driving chip and an electronic device using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a user output interface driver adapted to quickly respond to a touch input to a touch panel, which is an input interface of a user electronic device, and an apparatus including the same.

A touch panel, which is an input interface of an electronic device for a user, and a touch control circuit for processing a touch input to the touch panel by driving the touch panel are disclosed in, for example, Korean Patent Laid-Open Publication No. 2011-0126026, 2016-0006982, 0081529 and the like.

The information about the touch input may be provided to an application processor (hereinafter simply referred to as an AP) included in the electronic device. The AP generates a control signal corresponding to the touch input or in response to other events by a program installed in the electronic device and transmits the control signal to drivers for various user output interfaces connected to the AP A control signal can be provided. The various user output interfaces may include, for example, a vibrator (vibration unit) for outputting vibration, a speaker for outputting sound, and a display module for providing an image. Accordingly, the AP provides the control signal to the vibration motor driving unit (in other words, the vibration motor driving module, the vibration motor driving IC, and the vibration motor driving chip) that drives the vibration motor included in the vibrator, To provide the control signal to the VCM driver driving the voice coil actuator, or to provide the control signal to the display driver driving the display module. As a conventional technology for driving the vibration motor, for example, US09158379B and US09508236B are disclosed.

In the case where the user output interface is adapted to respond to the touch input, it is desirable that the reaction occur immediately. However, when the AP is in an idle mode (in other words, sleep mode or idle mode), a delay time is required for the AP to wake up. When the touch input is generated, a touch sensing unit (in other words, a touch sensing module, a touch sensing IC, a touch sensing chip) for transmitting the touch input transmits the related information to the AP. When the AP is in the idle mode, A delay may occur in the output of the user output interface corresponding to the touch input. Also, even if the AP is active, a delay may occur in the generation of the control signal depending on the execution priority among software when the AP generates the control signal corresponding to the touch input by software. Also, even if the AP is in the active mode, there is a problem that a user output interface response delay time occurs due to the recognition interval if the AP recognizes the touch input discontinuously in a polling manner.

That is, there is a problem that there is a delay time until the AP confirms the touch input and starts driving the user output interface in some situations.

In the present invention, a technique for minimizing a delay of a response output to be output in response to a touch input is provided.

The vibration motor driving apparatus 1 for controlling the vibration motor 5 according to one aspect of the present invention can be provided. The vibration motor driving apparatus includes a touch sensing unit 2 for sensing a touch input to the touch panel 6 and a control unit for receiving a second control signal including information for controlling the vibration motor 5, A signal selector 11; And a drive current output unit (15) for outputting a vibration motor drive current (I _coil ) for driving the vibration motor in accordance with the second control signal.

At this time, the control signal selection unit 11 selects, from the AP 3 that performs one or more applications using the information about the touch input provided from the touch sensing unit 2, And may further be adapted to receive a first control signal including information.

At this time, the control signal selector 11 determines that the delay between the second control signal most recently received before receiving the first control signal and the first control signal is less than or equal to a predetermined value And discard the first control signal if both the first control signal and the second control signal are for directing driving of the vibration motor to the touch input.

According to an aspect of the present invention, an electronic apparatus including the touch sensing unit 2 and the vibration motor driving unit 1 can be provided. The touch sensing unit 2 detects a touch input to the touch panel 6 connected to the touch sensing unit 2 and controls the vibration motor driving unit 10 in response to the detected touch input. The vibration motor driving unit 1 generates a second control signal including information for the vibration motor driving unit 1 and supplies the generated second control signal to the vibration motor driving unit 1, And may output a vibration motor driving current (I _coil ) for driving the motor.

The touch sensing unit 2 may further include a power supply providing unit 4 for supplying power to the power supply unit 4 in response to the touch input, Up signal, and the power supply unit (4) switches to the active mode when receiving the second wakeup signal while the power supply unit (4) is in the idle mode, 1). ≪ / RTI >

The vibration motor driving unit 1 further includes an AP 3 for performing at least one application using information about a touch input provided from the touch sensing unit 2. The vibration motor driving unit 1 includes a vibration motor driving unit 1, The first control signal including information for controlling the vibration motor driving unit 1 from the first control signal and the second control signal including information for controlling the vibration motor driving unit 1 from the second control signal, When the delay between the first control signals is determined to be equal to or less than a predetermined value and both the first control signal and the second control signal are for instructing driving of the vibration motor to the touch input, 1 < / RTI > control signal.

The user interface device driving chip 100 including the touch sensing module 102 and the vibration motor driving module 101 may be provided according to an aspect of the present invention. The touch sensing module 102 senses a touch input to the touch panel 6 connected to the user interface device driving chip 100 and outputs the sensed touch input to the vibration motor driving module 101 The vibration motor driving module 101 is configured to provide the vibration motor 5 with a second control signal including information for controlling the vibration motor driving module 101, OUTP, and OUTN of the user interface device driving chip 100 to output the vibration motor driving current I _coil for driving the user interface device driving chip 100. [

At this time, the power provided to at least some of the elements constituting the vibration motor driving module 101 is separated from the power provided to the touch sensing module, and the external Wherein the touch sensing module (102) is adapted to provide a second wake-up signal to the power supply unit (4) in response to the touch input, and the second power supply The wake-up signal is generated by switching the power supply providing unit 4 to the active mode when the power supply providing unit 4 is in the idle mode so that the power supply providing unit 4 supplies power to the at least a part of the devices Signal.

According to another aspect of the present invention, it is possible to provide a user output interface device driving chip 1001 for controlling a user output interface device 1005 that stimulates one of the human eyesight, auditory sense, and tactile sense. At this time, the user output interface device driving chip is provided from a touch sensing unit 2 for detecting a touch input to the touch panel 6, and is provided with a second And a control signal selection unit 11 for receiving a control signal, and can drive the user output interface device 1005 according to the second control signal.

A touch sensing unit 2 and a user output interface device driving chip 1001 for controlling a user output interface device 1005 for stimulating one of a visual, auditory, and tactile sense of a human being according to another aspect of the present invention It is possible to provide an electronic device. The touch sensing unit 2 detects a touch input to the touch panel 6 connected to the touch sensing unit 2 and outputs the sensed touch input to the user output interface device driving chip 1001 And the user output interface device 1005 is connected to the user output interface device driving chip 1001 to provide a second control signal including information for controlling the user output interface device 1005 to the user output interface device driving chip 1001, And may be driven according to the second control signal.

According to another aspect of the present invention, a user interface device driving chip 100 including the touch sensing module 102 and the user output interface device driving module 1101 may be provided. At this time, the touch sensing module 102 detects a touch input to the touch panel 6 connected to the user interface device driving chip 100, and then controls the operation of the user output interface device Module 1101 to the user output interface device driving module 1101, and the user output interface device driving module 1101 provides the second control signal including information for controlling the module 1101 to the user output interface device driving module 1101, .

According to the present invention, it is possible to provide a technique for minimizing the delay of the reaction output which is to be output in response to the generation of the touch input.

FIG. 1 is a block diagram of an electronic device according to a comparative example, in which functions necessary for an output to be provided to a user corresponding to the touch input are selected when a user's touch input is generated.
FIG. 2 is a block diagram illustrating an electronic device according to an exemplary embodiment of the present invention. Referring to FIG. 2, there is shown a functional block diagram of an electronic device according to an exemplary embodiment of the present invention.
3 shows an example of timing of control signals for controlling the vibration motor driving unit provided by the AP and the touch sensing module according to an embodiment of the present invention.
4 shows a configuration of a vibration motor driving unit according to an embodiment of the present invention.
Fig. 5 shows a part of the configuration of the vibration motor driving unit modified from Fig.
6 is a view for explaining a user interface device driving chip provided according to an embodiment of the present invention.
7 is a diagram for explaining a technique for generating the above-described pulse train used in the vibration motor drive module, according to an embodiment of the present invention.
8 is a diagram for explaining a technique for generating the above-described pulse train used in the vibration motor drive module, according to another embodiment of the present invention.
9 is a diagram for explaining a technique for generating the above-described pulse train used in the vibration motor driving module, according to another embodiment of the present invention.
Fig. 10 shows an example of the pulse train shown in Figs. 7 to 9. Fig.
FIG. 11 (a) shows the first type partial pulse train shown separately in FIG. 10, and FIG. 11 (b) shows the second type partial pulse train shown in FIG. 10 separately And FIG. 11 (c) shows the partial pulse train of the third type shown in FIG. 10 separately.
Fig. 12 shows a modified embodiment of Fig.
Fig. 13 shows a modified embodiment of Fig.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein, but may be implemented in various other forms. The terminology used herein is for the purpose of understanding the embodiments and is not intended to limit the scope of the present invention. Also, the singular forms as used below include plural forms unless the phrases expressly have the opposite meaning.

<Comparative Example>

FIG. 1 is a block diagram illustrating an electronic device 10 'according to a comparative example in which functions necessary for an output to be provided to a user corresponding to the touch input are selected when a user's touch input is generated.

The electronic device 10 'may include a vibration motor driving unit 1, a touch sensing unit 2, an AP 3, a power supply unit 4, a vibration motor 5, and a touch panel 6 have. When the vibration motor driving part 1 is provided in a chip form, the vibration motor driving part 1 may be referred to as a stationary motor driving device.

The touch sensing unit 2 can detect the presence or absence of a user input to the touch panel 6 and the occurrence position thereof.

The touch sensing unit 2 sends an interrupt signal to the AP 3 via the interrupt channel 21 when the touch input unit 2 is confirmed to be in the idle mode in which the AP 3 is in an inactive mode can do.

The touch sensing unit 2 can recognize that the AP 3 is in the idle mode when the AP 3 is in the idle mode and the touch sensing unit 2 can recognize that the AP 3 is in the idle mode, It is possible to generate the interrupt signal only when the interrupt signal is present.

If the AP 3 is provided with the interrupt signal in the idle mode, the AP 3 can be switched to the active mode.

A delay may occur from a first time at which the touch input is generated to a second time at which the AP 3 is switched to the active mode, which may be referred to as a first delay in this document.

The AP 3 in the active mode state can be provided with the touch input from the touch sensing unit 2 and the touch position. The AP 3 sends a first control signal to the vibration motor driving unit 1 to drive the vibration motor 5 when a touch input is generated to the first communication channel 1 formed between the AP 3 and the vibration motor driving unit 1 (Not shown). The vibration motor 5 may be configured to vibrate when a touch input occurs to notify a user who provided the touch input that the electronic device 10 'has successfully detected the touch input .

 From the third time when the AP 3 is ready to report to the AP 3 that the touch sensing unit 2 has generated the touch input even when the AP 3 is in the active mode, And a fourth time to start providing the first control signal for driving the vibration motor 5 through the first communication channel 32. In this specification, 2 &lt; / RTI &gt; delay.

The first communication channel 32 may be, for example, using the I ² C communication protocol. At this time, the AP 3 transmits the vibration power to the vibration motor driving unit 1 through the I ² C communication protocol, Can be transmitted.

Alternatively, the first communication channel 32 may be configured to transmit the PWM signal used in the vibration motor driving unit 1, for example.

The vibration motor driving unit 1 may include a full bridge circuit or a half bridge circuit as a circuit for providing the driving current I _coil to the vibration motor 5. [ The vibration motor 5 may include a coil, and both terminals of the coil may be connected to two output terminals OUTP and OUTN provided by the bridge circuit, respectively.

The on-off control of the gate of the FET included in the bridge circuit can be performed using the PWM signal to provide the driving current I _coil . At this time, the supply amount of the driving current I _coil may be adjusted according to the inter-pulse interval and the duty ratio of the PWM signal.

The voltages of the two output terminals OUTP and OUTN may vary depending on the input voltage VDD provided to the bridge circuit.

Also, the resistance (R _{FET, ON} ) between the source and the drain of the _FET can be changed by a specific value of the turn-on voltage, which is a voltage provided to the gate of the FET, ) May be changed by the turn-on voltage.

Accordingly, the voltage provided to the input voltage VDD can be variably provided using a DC-DC converter, and / or the output voltage of the two output terminals OUTP, OUTN Can be controlled.

When using the DAC, the output of the DAC can be connected to the gate of the FET. When the minimum voltage for _{turning on} the FET is V _ftom , the DAC outputs a value smaller than V _ftom to the DAC in a time period in which the logic value of the PWM signal to be inputted to the gate of the FET is '0' To provide a first digital input value.

And provide a second digital input value to the DAC for outputting a value greater than or equal to V _ftom to the DAC during a time interval in which the logic value of the PWM signal is '1'. The value of the resistor (R _{FET, ON} ) can be controlled by controlling the second digital input value.

In one embodiment, the output of the DAC may be provided to the gate of the FET through an amplifier.

When the electronic device 10 'is portable and is operated by a battery, power supplied to the vibration motor driving unit 1 can be shut off when the vibration motor driving unit 1 does not need to drive. Then, if the driving by the vibration motor driving unit 1 is to be resumed, the power must be supplied again. This interruption and supply of electric power can be performed by the power supply unit 4. The power supply unit 4 may be implemented by a boost IC.

The power supply unit 4 may supply power to the vibration motor driving unit 1 through the power supply line 41. [ The AP 3 transmits a first wakeup signal to the power supply unit 4 via the first wakeup channel 33 in a state where the power supply unit 4 has cut off the power supply through the power supply line 41 The power supply unit 4 can resume power supply through the power supply line 41. [ This process may take some time. For example, when the AP 3 in the idle mode receives the interrupt signal from the touch sensing unit 2, the AP 3 itself not only switches to the active state but also instructs the power supply unit 4 to perform the first wakeup Signal.

On the other hand, in one embodiment, the power supply unit 4 can receive the fact when the AP 3 is in the idle mode, and when the AP 3 is in the idle mode, The power supply can be cut off.

When the electronic device 10 'detects the touch input, it may drive a specific user output interface to feed back the fact to the user. However, due to the above-described first delay and / or second delay, there is a problem that the driving of the user output interface for the feedback may be delayed even if the touch input is provided from the user.

In FIG. 1, a vibrator including a vibration motor is described as an example of the user output interface. However, it can be understood that the same problem may occur even if the vibrator is replaced with a speaker or a display module.

The embodiment shown in Fig. 1 is for comparison with an embodiment of the present invention, and not all of the contents described in Fig. 1 are recognized as prior art.

&Lt; Embodiment 1 >

FIG. 2 is a block diagram illustrating an electronic device according to an exemplary embodiment of the present invention. Referring to FIG. 2, a functional unit required for an output to be provided to a user corresponding to the touch input is selected. The electronic device 10 may be, for example, a portable terminal such as a tablet or a smart phone.

In one embodiment, the electronic device 10 may include other components, such as a battery, which may interact with the components shown in FIG. 2, but for convenience, . The operating principle of the electronic device 10 'shown in FIG. 1 may be applied to the electronic device 10 shown in FIG. 2 without departing from the concept of the present invention.

Hereinafter, description of the same contents among the electronic device 10 shown in Fig. 2 and the electronic device 10 'shown in Fig. 1 can be omitted.

The electronic device 10 includes a vibration motor driving unit 1, a touch sensing unit 2, an AP 3, a power supply unit 4, a vibration motor 5, a touch panel 6, and an OR logic 7 ).

The touch sensing unit 2 can detect the presence or absence of a user input to the touch panel 6 and the occurrence position thereof.

In a state in which the AP 3 is in the idle mode, the touch sensing unit 2 can provide an interrupt signal to the AP 3 when the occurrence of the touch input is confirmed. If the AP 3 is provided with the interrupt signal in the idle mode, the AP 3 can be switched to the active mode. At this time, the first delay may exist from a first time at which the touch input is generated to a second time at which the AP 3 is switched to the active mode.

The AP 3 in the active mode state can be provided with the touch input from the touch sensing unit 2 and the touch position. The AP 3 sends a first control signal to the vibration motor driving unit 1 to drive the vibration motor 5 when the touch input is generated, to the AP 3 and the first communication channel provided between the AP 3 and the vibration motor driving unit 1. [ Lt; RTI ID = 0.0 &gt; 32 &lt; / RTI &gt; The vibration motor 5 may be configured to vibrate when a touch input is generated to inform the user who provided the touch input that the electronic device 10 has successfully detected the touch input.

 From the third time when the touch sensing unit 2 is ready to report the occurrence of the touch input to the AP 3 even when the AP 3 is in the active mode, The second delay may exist between a fourth time when the first control signal for starting the vibration motor 5 is received and the first control signal for driving the vibration motor 5 is provided through the first communication channel 32. [

The first communication channel 32 may be, for example, using the I ² C communication protocol. At this time, the AP 3 transmits the vibration power to the vibration motor driving unit 1 through the I ² C communication protocol, Can be transmitted. Alternatively, the first communication channel 32 may be configured to transmit the PWM signal used in the vibration motor driving unit 1, for example. However, in the present invention, there is no restriction on the specific communication protocol that the first communication channel follows.

The vibration motor driving unit 1 may include a full bridge circuit or a half bridge circuit as a circuit for providing the driving current I _coil to the vibration motor 5. [ The vibration motor 5 may include a coil, and both terminals of the coil may be connected to two output terminals OUTP and OUTN provided by the bridge circuit, respectively.

The on-off control of the gate of the FET included in the bridge circuit can be performed by the PWM signal to provide the driving current I _coil . At this time, the supply amount of the driving current I _coil may be adjusted according to the inter-pulse width and the duty ratio of the PWM signal.

The voltages of the two output terminals OUTP and OUTN may vary depending on the input voltage VDD provided to the bridge circuit. Further, the resistance (R _{FET, ON} ) between the source and the drain of the FET may be varied depending on the specific value of the turn-on voltage provided to the gate of the FET. As a result, the resistance of the two output terminals OUTP and OUTN The voltage may be varied by the turn-on voltage. Accordingly, by providing the voltage provided to the input voltage VDD variably using a DC-DC converter, and / or by variably providing the turn-on voltage using the DAC 125, OUTP, OUTN) can be controlled.

When using the DAC 125, the output of the DAC 125 may be coupled to the gate of the FET. The first DAC 125 outputs a value smaller than V _ftom to the DAC 125 during a time interval in which the value of the PWM signal is '0', when the minimum voltage for _turning on the FET is V _ftom. Provides a digital input value and provides a second digital input value to the DAC 125 such that the DAC 125 outputs a value equal to or greater than V _{ftom during a time} interval of a PWM signal value of '1' . The value of the resistor (R _{FET, ON} ) can be controlled by controlling the second digital input value.

When the electronic device 10 is operated by a battery as a portable type, power supplied to the vibration motor driving unit 1 can be cut off when the vibration motor driving unit 1 does not need to drive. Then, if the driving by the vibration motor driving unit 1 is to be resumed, the power must be supplied again. This interruption and supply of electric power can be performed by the power supply unit 4.

The AP 3 is switched to the power supply line 41 through the first wakeup channel 33 in a state in which the power supply unit 4 has cut off the power supply to the power supply line 41 for supplying power to the vibration motor driving unit 1. [ If the wakeup signal is provided, the power supply unit 4 can resume power supply to the power supply line 41. [ This process may take some time.

On the other hand, in one embodiment, the power supply unit 4 can receive the fact when the AP 3 is in the idle mode, and when the AP 3 is in the idle mode, The power supply can be cut off.

When the electronic device 10 detects the touch input, it may drive a specific user output interface to feed back the fact to the user. However, due to the above-described first delay and / or second delay, there is a problem that the driving of the user output interface for the feedback may be delayed even if the touch input is provided from the user.

The electronic device 10 according to the embodiment shown in FIG. 2 includes a second communication channel 22 for connecting the touch sensing unit 2 and the vibration motor driving unit 1, a touch sensing unit 2, A second wake-up channel 23 for connecting the second wake-up channel 23 to the second wake-up channel 23, a second wakeup channel 23 for connecting the second wakeup channel 23, And an OR logic 7 for providing the result of the logical OR operation to the power supply providing unit 4 as the wakeup signal.

In a preferred embodiment of the present invention, when the AP 3 is in the idle mode, the touch sensing unit 2 outputs a second control signal for driving the vibration motor 5, To the vibration motor driving unit 1 through the second communication channel 22. [

The second communication channel 22, for example may be using the I ² C protocol, where I ² through C protocol touch sensing unit (2) is vibration intensity of the vibration motor driving a vibration motor (1) and / Or information about the vibration pattern including the vibration period.

Alternatively, the second communication channel 22 may be configured to transmit, for example, a PWM signal used in the vibration motor driving unit 1 or a control signal in the form of a pulse train. The shape and generation method of the pulse train will be described later.

Notwithstanding the foregoing examples, there is no restriction in the present invention regarding the specific communication protocol to which the second communication channel 22 is subject.

The touch sensing unit 2 may include a vibration motor control unit 25 for controlling the second communication channel 22 and the second wakeup channel 23.

In one embodiment, a second wake-up signal provided through the second communication channel 22 and the second wake-up channel 23 may be generated and provided from the touch sensing unit 2. That is, the second communication channel 22 and the second wakeup channel 23 may be unidirectional communication channels.

The vibration motor control unit 25 may have a first control mode and a second control mode, which are at least two control modes for generating the second control signal.

In the first control mode, the vibration motor control unit 25 can check whether the AP 3 is in the idle state. The vibration motor control unit 25 can activate the second communication channel 22 only when the AP 3 is in the idle state. That is, the second control signal may be provided from the touch sensing unit 2 to the vibration motor driving unit 1 only when the AP 3 is in the idle state. Accordingly, the touch sensing unit 2 can directly provide the vibration control unit 1 with the second control signal for vibration control only for the first touch input while the AP 3 is in the idle state .

In the second control mode, the vibration motor control unit 25 controls the vibration sensing unit 2 to perform the vibration control to the vibration motor driving unit 1 whenever the touch input is generated regardless of whether the AP 3 is in the idle state or not The second control signal may be directly provided.

The selection of either the first control mode or the second control mode may be made by the manufacturer at the time of designing the electronic device (10). Alternatively, the electronic device 10 may be configured to allow the user to select any one of the first control mode and the second control mode. For this purpose, among the registers included in the touch sensing unit 2, The setting of the register may be designed so that it can be changed by the user.

The vibration motor control unit 25 may provide the second wake-up signal via the second wake-up channel 23 when the AP 3 is in the idle state. The second wake-up signal may be provided to the power supply unit 4 via the OR logic 7 and the power supply unit 4 may be provided to the vibration motor driving unit 1 in response to the second wake- The operation power supply through the power line 41 can be resumed. Thereby, even before the AP 3 is completely switched from the idle mode to the active mode and the AP 3 transmits the first wake-up signal to the power supply unit 4, the second wake- So that the driving unit 1 can be supplied with operating power.

In one embodiment, the vibration motor control unit 25 can know whether the power supply unit 4 is supplying electric power through the power supply line 41, and the second wakeup signal is supplied to the vibration motor control unit 25 It can be generated and delivered only if it has not been acquired.

&Lt; Processing of overlapping vibration motor driving unit control signals >

When the touch sensing unit 2 directly controls the vibration motor driving unit 1 by the second control signal transmitted through the second communication channel 22 in response to the touch input, It may be designed not to generate the first control signal for driving the vibration motor driving section 1 in response to the input. In this case, the AP 3 needs to receive, from the touch sensing unit 2, information requesting not to generate the first control signal despite the touch input.

Alternatively, even when the touch sensing unit 2 directly controls the vibration motor driving unit 1 by the second control signal transmitted through the second communication channel 22 in response to the touch input, May be designed to generate the first control signal for driving the vibration motor driver 1 in response to the touch input. In this case, the vibration motor driving unit 1 can receive the first control signal from the AP 3 and the second control signal from the touch sensing unit 2 with a little time difference for the same touch input event. At this time, the first control signal and the second control signal may be signals having the same purpose. If the first command according to the first control signal and the second command according to the second control signal are directly transferred, two vibration outputs can be generated for one touch input, which may cause confusion to the user.

Two methods for limiting the overlapping vibration output to a single vibration output can be provided.

First, it is possible to control only the vibration motor driving unit 1 by exchanging messages between the AP 3 and the touch sensing unit 2.

Second, instead of allowing the AP 3 and the touch sensing unit 2 to provide the first control signal and the second control signal for controlling the vibration motor driving unit 1, the vibration motor driving unit 1 It is possible to invalidate the first control signal received late and process it.

In an embodiment of the present invention, the second method may be used. Hereinafter, the second method will be described.

3 shows an example of the timing of the first control signal provided by the AP 3 and the second control signals provided by the touch sensing unit 2 to control the vibration motor driving unit 1 according to an embodiment of the present invention. .

The t1, t4, t6 and t8 in FIG. 3 (a) show the timing at which the touch sensing unit 2 generates the second control signal corresponding to the touch input, and t3 and t5 , t7 and t9 show the time when the AP 3 generates the first control signal corresponding to the same touch input. The x-axis in Fig. 3 represents time.

In FIG. 3 (a), TC-Ex (x = 1, 2, 3, 4) is a symbol for distinguishing the second control signals generated for the x- -Ex (x = 1, 2, 3, 4) is a symbol for distinguishing the first control signals generated for the x-th touch input from each other.

The second control signals TC-E1, TC-E2, TC-E3 and TC-E4 correspond to the first control signals AC-E1, AC-E2, AC-E3 and AC-E4, respectively.

The point of time t2 indicates a point in time when the AP 3 in the idle mode starts to switch to the active mode after receiving the interrupt signal from the touch sensing unit 2. [

The time points t1, t4, t6, and t8 at which the second control signals are generated are a point slightly behind the point at which the user's actual touch input to the touch panel is made.

The timings t3, t5, t7 and t9 at which the first control signals are generated are the timings at which predetermined delays D1, D2, D3 and D4 are added to the timings at which the corresponding second control signals are generated.

From the time when the touch sensing unit 2 detects the touch inputs and outputs the corresponding second control signals TC-E1, TC-E2, TC-E3 and TC-E4, (AC-E1, AC-E2, AC-E3, and AC-E4) corresponding to the touch input and outputs the first control signals AC- (D1, D2, D3, D4). This delay may be due to software running on the AP 3.

In particular, since the AP 3 in the idle mode detects the first touch input from the touch sensing unit 2 from the time when the touch sensing unit 2 detects the first touch input that caused the second control signal TC- The delay time required for the AP 3 to switch from the idle mode to the active mode until the time when the input is confirmed and the second control signal TC-E1 corresponding to the first touch input is outputted. Therefore, the delay D1 can have a larger value than the delays D2, D3, and D3.

3, for example, the vibration motor driving unit 1 receives the second control signal TC-E1 at time t1 to drive the vibration motor, and at time t2, It is possible to drive the vibration motor by receiving the first control signal AC-E1. At this time, since the second control signal TC-E1 and the first control signal AC-E1 are for one first touch input, the vibration motor may react twice for one touch input, This can be a problem.

In order to solve such a problem, the vibration motor driving unit 1 may include a control signal selection unit 11. The control signal selector 11 may receive the first control signal through the first communication channel 32 after receiving the second control signal via the second communication channel 22. [ If it is determined that the delay between the first control signal and the second control signal is equal to or smaller than a predetermined first delay, the first control signal and the second control signal are identical It can be determined that the touch input event has occurred in duplication. If it is determined that the first control signal and the second control signal are generated in an overlapping manner, the control signal selection unit 11 can invalidate the first control signal that arrives later. That is, the control signal selector 11 can process the vibration motor so as not to vibrate by the first control signal.

In one embodiment of the present invention, the control signal selector 11 selects the first control signal corresponding to the second control signal from the AP 3 within the first delay after the second control signal is received , It is possible to output the predetermined second pattern vibration through the vibration motor or to output a predetermined signal through another user output interface (e.g., a screen or a sound). By doing so, it is possible to feedback to the user that the touch input of the user is well detected, but the response of the AP 3 accordingly is not being performed quickly.

In one embodiment of the present invention, the control signal selector 11 does not receive the second control signal from the touch sensing unit 2 before a predetermined time from when the first control signal is received from the AP 3 It can be determined that the first control signal is provided not for the touch input but for another reason. For example, the AP 3 may independently provide the first control signal to the vibration motor driving unit 1 in order to inform the user of a specific event regardless of the touch input. In this case, the control signal selector 11 can effectively process the first control signal from the AP 3, and process the vibration motor to vibrate by the first control signal.

<Generation of Vibration Pattern>

In the embodiment of the present invention described in FIGS. 2 and 3, the vibration feedback delay according to the touch input is minimized, thereby improving the user experience quality corresponding to the touch input.

In order to improve the quality of the user experience, another embodiment of the present invention provides a method for automatically generating a vibration pattern based on at least one of a position of a touch input to a touch panel, an intensity of the input, Can be generated.

The vibration pattern may mean that the vibration period and the vibration intensity of the vibration motor are defined in accordance with time. For example, the first vibration pattern generated when the touch input is made to the first point of the touch panel may be different from the second vibration pattern generated when the touch input is performed to the second point of the touch panel.

In one embodiment, the touch sensing unit 2 shown in FIG. 2 may store at least one of the position of the touch input, the intensity of the input, the input direction, and the touch contact duration for input as parameters. The parameters may be provided to the vibration motor driver 1 via the second communication channel 22. [ The vibration motor driving unit 1 may generate and apply the vibration pattern based on the parameters.

In another embodiment, the vibration motor control unit 25 can generate the vibration pattern of the vibration motor by substituting the one or more parameters into a predetermined expression or table. And information on the vibration pattern may be provided to the vibration motor driving unit 1 through the second communication channel 22. [ The vibration motor driving unit 1 can drive the vibration motor 5 according to the vibration pattern.

The second communication channel 22 may be used to transmit necessary information using the I ² C protocol or may be used to pass a PWM signal or a pulse train.

In the embodiment in which the PWM signal or the pulse train is transmitted through the second communication channel 22, the vibration motor control unit 25 generates the PWM signal or the pulse train corresponding to the generated vibration pattern, Channel &lt; / RTI &gt; In this case, the vibration motor driving unit 1 may generate the vibration motor driving current I _coil in accordance with the PWM signal or the pulse train.

Alternatively, when the second communication channel 22 complies with the I ² C standard, the vibration motor control unit 25 may set the parameters related to the setting values relating to the vibration period and the vibration intensity corresponding to the generated vibration pattern, 2 communication channel 22 to the vibration motor driving unit 1. [ In this case, the vibration motor driving unit 1 generates a PWM signal or a pulse train using the parameters provided through the second communication channel 22, and outputs the vibration motor driving current I _coil can be generated. The parameter may include a voltage control value for controlling a potential difference between a pair of output terminals OUTP and OUTN of the vibration motor driving unit 1 to which the vibration motor driving current I _coil is input and output. When the voltage control value is included in the parameter, the vibration motor driving unit 1 can control the potential difference between the pair of output terminals OUTP and OUTN by reflecting the voltage control value.

The specific embodiment for controlling the vibration motor driving current I _coil in the vibration motor driving unit 1 may be implemented as follows.

&_Lt; Control of Vibration Motor Driving Current (I _coil ) >

In one embodiment of the present invention, the vibration motor driving unit 1 may be implemented as shown in FIG.

4 shows a configuration of a vibration motor driving unit according to an embodiment of the present invention.

The vibration motor driving unit 1 may include a driving current output unit 15 that outputs a vibration motor driving current I _coil for driving the vibration motor. The driving current output section 15 may include a bridge circuit including, for example, four FETs M1, M2, M3, and M4. The bridge circuit may include a bridge circuit controller 12 for controlling the gate voltage of each FET. The vibration motor driving unit 1 may include the control signal selection unit 11 described above.

The control signal selector 11 selects one of the first control signal received through the first communication channel 32 and the second control signal received through the second communication channel 22, (PWM) signal or pulse train to be provided to the circuit control section 12 through the terminals AIN and BIN. The gate of the FET may be provided with an analog signal based on the PWM signal or the pulse train, respectively.

The vibration motor driving current I _coil flowing through the pair of output terminals OUTP and OUTN provided in the vibration motor driving unit 1 can be controlled by the operation of the bridge circuit. The direction, size, and duration of the vibration motor driving current I _coil can be controlled by controlling on / off of the gates of the FETs included in the bridge circuit according to the provided PWM signal or pulse train. As shown in FIG. 4, the vibration motor 5 may include a coil L1, and the vibration motor driving current I _coil may flow through the coil L1.

And the first power supplied to the vibration motor driving unit 1 through the power line 41 may be provided as the driving voltage VM of the bridge circuit. At this time, the driving voltage VM may be the first power itself or a power obtained by boosting or depressurizing the first power via the DC-DC converter 13. The DC-DC converter 13 may be included in the vibration motor driving unit 1 or may be provided outside the vibration motor driving unit 1.

In one embodiment, when the parameters relating to the vibration period, the vibration intensity, and the voltage control value corresponding to the generated vibration pattern are provided through the second communication channel 22, the control signal selection unit 11 The value of the driving voltage VM can be controlled by controlling the operation of the DC-DC converter 13 based on the voltage control value.

Fig. 5 shows a part of the configuration of the vibration motor driving unit 1 modified from Fig.

Direction and duration of the vibration motor drive current (I _coil) is can be determined by the shape of the crystal or the pulse train by the duty and a period of the PWM signal, the magnitude of the vibration motor drive current (I _coil) are shown below May be controlled as well.

That is, by comparing the voltage across the sense resistor R _EXT disposed in the path through which the vibration motor drive current I _coil flows with the reference potential V _REF using the comparator 410, the vibration motor drive current I _coil (C1) indicating whether or not the predetermined value (C1) exceeds a predetermined value. When the vibration motor driving current I _coil exceeds a preset value, the FETs M1, M2, M3, and M4 that are performing on / off operations according to the PWM signal or the pulse train are temporarily turned off, (I _coil ) to be less than a preset value by inducing the natural damping of the vibration motor driving current I _coil . At this time, if the vibration motor driving current I _coil falls below a preset value, the ON / OFF state of the FETs M1, M2, M3, and M4 is recovered to follow the control of the PWM signal or the pulse train can do. By doing so, the magnitude of the vibration motor drive current I _coil can be controlled.

The voltage between the pair of output terminals OUTP and OUTN may be controlled by the driving voltage VM, but may be controlled using the DAC 125 shown in FIG. 5 as follows.

4, When the bridge circuit control section 12 controls the gate voltages of the FETs M1, M2, M3, and M4 by the PWM signal or the pulse train, the gate voltage for keeping the FET on is fixed to a predetermined value Can be. However, in the embodiment shown in FIG. 5, the gate voltage for holding the FET in the ON state is not fixed to a specific value, and the voltage control value . &Lt; / RTI &gt; The variable may be performed using the DAC 125 shown in FIG. The resistance R _{FET, ON, which} is the resistance between the drain and the source of the FET when the FET is in an on state, depends on the gate voltage.

Although FIG. 5 shows an example in which the DAC outputs the gate voltage of all the FETs, even if only the gate voltage of some of the FETs is output through the DAC, the potential difference between the pair of output terminals OUTP and OUTN is controlled can do.

As described above, it is possible to control the potential difference between the pair of output terminals OUTP and OUTN, to control the magnitude of the vibration motor driving current I _coil , and to control the vibration motor driving current I by controlling the duration of the _coil), it is possible to control the power change provided to the coil (I _coil).

In addition, since the PWM signal or the pulse train conforms to the parameters or the vibration pattern generated by the touch sensing unit 2, when the user provides the touch input using all the processes described above, . This vibration feedback can be generated immediately using the technique described with reference to FIGS. 2 and 3.

<User interface device driving chip integrating touch sensing part and vibration motor driving part>

FIG. 6 is a view for explaining a user interface device driving chip 100 provided in accordance with an embodiment of the present invention.

The functions of the touch sensing unit 2 and the vibration motor driving unit 1 are integrated into the user interface device driving chip 100.

The user interface device driving chip 100 includes a touch sensing module 102, a vibration motor driving module 101, a touch panel interface terminal 151, an interrupt signal output terminal 152, a second wakeup signal output terminal 153 A first control signal input terminal 154, a power supply power supply input terminal 155 and a vibration motor drive current output terminal 156 (OUTP, OUTN). There may be other input / output terminals not shown in Fig.

The touch sensing module 102 may have the same structure as the touch sensing unit 2 described above.

The vibration motor driving module 101 may have the same structure as the vibration motor driving unit 1 described above. That is, it can have the structure shown in Fig.

The touch panel interface terminal 151 is a terminal for connection between the touch sensing module 102 and the touch panel 6 for exchanging signals.

The interrupt terminal 152 is a terminal for forming an interrupt signal transfer channel 121 between the user interface device driving chip 100 and the AP 3. [

The second wakeup signal output terminal 153 is connected to the external power supply providing unit 4 for supplying power to some elements of the user interface device driving chip 100 such as the vibration motor driving module 101 in the idle mode And outputs the second wake-up signal to form a second wake-up channel 123 for transmitting a second wake-up signal for switching to the active mode.

The first control signal input terminal 154 receives the first control signal for controlling the vibration motor 5 driven by the user interface device driving chip 100 as a first control signal provided by the AP 3 It is a receiving terminal.

The power supply providing power input terminal 155 is a terminal for receiving the power supplied from the power supply unit 4. The user interface device driving chip 100 may be supplied with power other than the power supplied from the power supply unit 4.

The vibration motor drive current output terminal 156 may be a pair of terminals OUTP and OUTN through which the vibration motor drive current I _coil generated by the vibration motor drive module 101 is inputted and outputted.

The touch sensing module 102 senses a touch input to the touch panel 6 connected to the user interface device driving chip 100 and then controls the vibration motor driving module 101 in response to the detected touch input. To the vibration motor driving module 101, the second control signal including information for controlling the vibration motor driving module 101. [ To this end, a second communication channel 122 for transmitting the second control signal may be provided between the touch sensing module 102 and the vibration motor driving module 101.

The vibration motor driving module 101 outputs a vibration motor driving current I _coil for driving the vibration motor 5 through the output terminal 156 of the user interface device driving chip according to the second control signal .

The first power provided to at least some of the elements constituting the vibration motor driving module 101 may be separated from the power supplied to the touch sensing module 102, May be provided from a power supply unit 4 provided outside the user interface device driving chip 100. Wherein some of the elements may include, for example, elements included in the bridge circuit described above.

The touch sensing module 102 is adapted to provide the second wake-up signal to the power supply unit 4 via the second wake-up channel 123 in response to the touch input. The second wake-up signal is generated by switching the power supply unit 4 to the active mode when the power supply unit 4 is in the idle mode so that the power supply unit 4 is driven by the vibration motor driving module 101, To supply power to the at least some of the elements in the memory.

A technique for generating the above-described pulse train will be described below. The pulse train can be used in the vibration motor driving unit 1 shown in Fig. 2 or the vibration motor driving module 101 shown in Fig. Since the principle of generating the pulse train in the embodiment according to FIG. 2 and the embodiment according to FIG. 6 is the same, the following description will be made on the basis of the embodiment according to FIG. 6, which can be applied to the embodiment according to FIG. It is easy to understand.

7 is a diagram for explaining a technique for generating the above-described pulse train used in the vibration motor drive module, according to an embodiment of the present invention.

The pulse train 510 applied to the gates of the FETs M1 to M4 included in the vibration motor drive module 101 shown in Fig. 6 is connected to the vibration motor control unit 25 shown in Fig. 6, Can be generated. At this time, the generated pulse train may be transmitted to the vibration motor driving module 101 through the second communication channel 122. The shapes of the pulse trains 510 applied to the gates of the respective FETs M1 to M4 may be different from each other.

The vibration motor control unit 25 may include a vibration pattern control unit 226 and a state machine 225.

The vibration pattern control unit 226 may store vibration pattern parameters P _STATE , P _DUTY , P _INT , P _{PULSE_HEIGHT} , and P _VM for making the pulse train 510. The vibration pattern parameters may be selected to have different values depending on the type of the touch event.

The vibration pattern parameter P _VM is provided as a control signal of the DC-DC converter 13 and can be used to control the value of the bridge circuit drive voltage VM output from the DC-DC converter 13. [

The vibration pattern parameters P _STATE , P _DUTY , P _INT , and P _{PULSE_HEIGHT} may be provided to the state machine 225.

The state machine 225 may form the shape of the pulse train 510 provided to the vibration motor drive module 101 according to the vibration pattern parameters P _STATE , P _DUTY , P _INT , and P _{PULSE_HEIGHT} . The manner of operation of the state machine 225 and the form of the pulse train 510 will be described later.

The pulse train 510 may have a digital value and may be converted to an analog form by the DAC 225 and provided to the gate of the FET. The output signal of the DAC 225 may go through an amplifier not shown before being applied to the gate of the FET.

8 is a diagram for explaining a technique for generating the above-described pulse train used in the vibration motor drive module, according to another embodiment of the present invention.

The pulse train 510 applied to the gates of the FETs M1 to M4 included in the vibration motor driving module 101 shown in Fig. 6 is generated by the vibration motor driving module 101 . To this end, the touch sensing module 102 may communicate a command to generate the pulse train 510 and the underlying data necessary therefor via the second communication channel 122.

The vibration motor drive module 101 may include the same vibration pattern control section 226 and state machine 225 as described in FIG.

9 is a diagram for explaining a technique for generating the above-described pulse train used in the vibration motor driving module, according to another embodiment of the present invention.

The vibration motor drive module 101 may include the same state machine 225 as described in FIG. 7, and the vibration motor control unit 25 may include a vibration pattern control unit 226. FIG.

The vibration pattern control unit 226 may generate and provide vibration pattern parameters P _STATE , P _DUTY , P _INT , and P _{PULSE_HEIGHT} to the state machine 225 via the second communication channel 122.

The DC-DC converter 13 shown in Figs. 7 to 9 may be inside the vibration motor driving module 101 or outside. Alternatively, the DC-DC converter 13 shown in Figs. 7 to 9 may be omitted. That is, the driving voltage VM provided to the bridge circuit may be fixed to a constant value, or may be variable depending on the output voltage of the battery.

7 to 9, other components including the AP 3, the OR logic 7, the power supply unit 4, and the vibration motor 5 shown in FIG. 6 are omitted for convenience of explanation.

FIG. 10 shows an example of the pulse train 510 described with reference to FIGS.

10, the horizontal axis represents the time axis, and the vertical axis represents the size of the pulse train 510. In FIG.

When the pulse train 510 is divided into partial pulse trains of successive pulses, each partial pulse train may be divided into one of the following three types. That is, in the first type partial pulse train 511, the interval between the pulses P11 to P15 included in the partial pulse train 511 may increase with time. In the second type partial pulse train 512, the interval between the pulses P21 to P25 included in the partial pulse train 512 may be constant with time. In the third type partial pulse train 513, the interval between the pulses P31 to P35 included in the partial pulse train 513 may decrease with time.

Each of the pulse trains 510 includes at least one of a first type partial pulse train 511, a second type partial pulse train 512, and a third type partial pulse train 513 Can be. And the forward relationship between the partial pulse trains 511, 512, and 513 in the pulse train 510 can be variously adjusted.

Fig. 11 (a) shows the first type partial pulse train 511 shown separately in Fig. 10, and Fig. 11 (b) shows the second type partial pulse train 512 are separately shown, and FIG. 11 (c) shows the third type partial pulse train 513 shown in FIG. 10 separately.

10 and 11 together.

The rising edge or falling edge of each pulse P11 to P15, P21 to P25, and P31 to P35 can be synchronized with a series of interrupt signals (P _INT ) received from the vibration pattern control unit 226. It can be appreciated that the time interval between adjacent interrupts of the series of interrupt signals (P _INT ) does not remain constant as it increases or decreases with time. In FIG. 10, the series of interrupt signals (P _INT ) is represented by INT11 to INT15, INT2, and INT31 to INT35.

Each pulse included in the first type partial pulse train 511 and the third type partial pulse train 513 may be generated corresponding to each of the interrupt signals P _INT . However, each pulse included in the second type of partial pulse train 512 may be generated corresponding to only one received interrupt signal (P _INT ).

The duty, which is a ratio between the high level holding time and the low level holding time of each of the pulses P11 to P15, P21 to P25, and P31 to P35, can be controlled differently for each pulse. The duty of each pulse can be controlled by a duty parameter (P _DUTY ). In one embodiment, the duty parameter P _DUTY may be updated or sparsely updated each time the interrupt signal P _INT is generated.

Specific values of the high level of each of the pulses P11 to P15, P21 to P25, and P31 to P35 can be independently controlled on a pulse-by-pulse basis. That is, each pulse does not have only discrete values of '0' and '1', and the high level value of each pulse can have various digital values. The high level value of each pulse can be controlled by a pulse height parameter (P _{PULSE_HEIGHT} ). In one embodiment, the pulse height parameter (P _{PULSE_HEIGHT} ) may be updated or sparse updated each time the interrupt signal (P _INT ) is generated.

The state machine 225 may have at least three states. The state transition between states can be made by a state parameter ( _PSTATE ) received by the state machine 225. That is, for example, when the state parameter _PSTATE is updated to the value of the first state S1, the state machine 225 can be switched to the first state S1 of the at least three states.

The first state S1 of the three states is a state in which the width between adjacent output pulses P11 to P15 increases with time and the interrupt signal P _INT INT11- INT15) increases with time. In one embodiment, the duty and high level values of the output pulses P11 to P15 are set to a duty parameter P _DUTY and a pulse height parameter P (P _INT ) that are given when each of the interrupt signals P _{INT PULSE_HEIGHT} ).

The second state S2 of the three states is a state in which a width between adjacent output pulses P21 to P25 is kept constant with time and at this time the interrupt signal P _INT for the second state S2 INT2) may occur only once at first, or may not occur at all. In one embodiment, the duty and high level of each of the output pulses P21 to P25 are determined by a duty parameter P _DUTY and a pulse height parameter P _{PULSE_HEIGHT} given when the interrupt signal P _INT INT2 is generated. Lt; / RTI &gt; Or the values of the duty and high level of each of the output pulses P21 to P25 are set to a duty parameter P _DUTY given when the state parameter P _STATE is switched to the value of the second state S2 and a pulse height parameter P _{PULSE_HEIGHT} ).

The third state S3 of the three states is a state in which the width between adjacent output pulses P31 to P35 decreases with time and the interrupt signal P _INT INT31- INT35) decreases with time. In one embodiment, the duty and high level values of the output pulses P31 to P35 are set to a duty parameter P _DUTY and a pulse height parameter P (P _INT ) that are given when each of the interrupt signals P _{INT PULSE_HEIGHT} ).

Conventionally, the PWM signal is supplied to the gate of the bridge circuit included in the vibration motor driving module 101 to drive the pulse train. However, the pulse train according to the embodiment of the present invention described with reference to FIGS. 7 to 11, Can be used.

Each pulse of the pulse train according to an embodiment of the present invention described above with reference to FIGS. 7 to 11 is generated every time an interrupt signal (P _INT ) is generated. The interval between the adjacent interrupt signals (P _INT ) So that it can be kept constant. Even when it is necessary to keep the interval between adjacent pulses within the pulse train constant, the interrupt signal (P _INT ) is generated once or zero times by applying the operation method of the second state (S2) So that the interval between the interrupt signals P _INT can be kept constant.

Fig. 12 shows a modified embodiment of Fig. 2 in which the vibration motor 5 is generalized to a user output interface device 1005 (ex: vibration motor, speaker, screen), and the vibration motor driving part 1 drives a user output interface device Chip &lt; / RTI &gt; It can be easily understood that there is no contradiction in the generalization.

Fig. 13 shows a modified embodiment of Fig. 6 in which the vibration motor 5 is generalized to a user output interface device 1005 (ex: vibration motor, speaker, screen) And is generalized to the driving module 1101. It can be easily understood that there is no contradiction in the generalization.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the essential characteristics thereof. The contents of each claim in the claims may be combined with other claims without departing from the scope of the claims.

1: Vibration motor drive section
2: Touch sensing unit
3: AP
4: Power supply
6: Touch panel
11: Control signal selector
13: DC-DC converter
15: Driving current output section
25: Vibration motor control section
100: User interface device driving chip
101: Vibration motor drive module
102: Touch sensing module

Claims (11)

A vibration motor drive device for controlling a vibration motor,
(1) receiving a second control signal including information for controlling the vibration motor from a touch sensing unit for sensing a touch input to the touch panel, (2) using information about the touch input provided from the touch sensing unit Receiving from the AP performing one or more applications a first control signal including information for controlling the vibration motor, and (2) receiving the second control signal, which is the most recently received before receiving the first control signal, When the delay between the signal and the first control signal is determined to be equal to or less than a predetermined value and both the first control signal and the second control signal are for instructing driving of the vibration motor to the touch input A control signal selector adapted to discard the first control signal; And
A driving current output unit for outputting a vibration motor driving current for driving the vibration motor in accordance with the second control signal;
/ RTI &gt;
Vibration motor drive. delete delete delete An electronic device comprising a touch sensing unit, a vibration motor driving unit, and a power supply unit for supplying power to the vibration motor driving unit,
The touch sensing unit detects a touch input to the touch panel connected to the touch sensing unit and generates a second control signal including information for controlling the vibration motor driving unit in response to the detected touch input, A second wake-up signal is provided to the power supply corresponding to the touch input, and the second wake-
Wherein the vibration motor driving unit is adapted to output a vibration motor driving current for driving the vibration motor in accordance with the second control signal,
Wherein the power supply unit is configured to switch to an active mode and supply power to the vibration motor drive unit when the power supply unit is in the idle mode and receive the second wake-
Electronic device. An electronic device comprising: a touch sensing unit; a vibration motor driving unit; and an AP for performing one or more applications using information on touch inputs provided from the touch sensing unit,
Wherein the touch sensing unit detects a touch input to the touch panel connected to the touch sensing unit and generates a second control signal including information for controlling the vibration motor driving unit in accordance with the detected touch input, And provides the generated second control signal to the vibration motor driving unit,
Wherein the vibration motor driving unit is configured to output a vibration motor driving current for driving the vibration motor in accordance with the second control signal and a second control signal including information for controlling the vibration motor driving unit from the AP, Lt; RTI ID = 0.0 &gt;
(3) It is determined that the delay between the second control signal and the first control signal last received before the reception of the first control signal is equal to or less than a predetermined value, and the first control signal and the second control And to discard the first control signal if the signal is to direct drive of the vibration motor to the touch input,
Electronic device. A touch sensing module, and a vibration motor driving module,
Wherein the power provided to at least some of the elements constituting the vibration motor driving module is separated from the power provided to the touch sensing module and is provided by a power supply provided outside the user interface device driving chip And,
Wherein the touch sensing module is configured to: detect a touch input to a touch panel connected to the user interface device driving chip; and a second control module to control the vibration motor driving module in response to the detected touch input, And to provide a second wake-up signal to the power supply in response to the touch input,
Wherein the vibration motor drive module outputs a vibration motor drive current for driving the vibration motor through the output terminal of the user interface device drive chip according to the second control signal,
Wherein the second wake-up signal is a signal for switching the power supply unit to the active mode when the power supply providing unit is in the idle mode so that the power supplying unit supplies power to the at least some of the devices.
User Interface Device Driven Chip. delete 1. A user output interface device driving chip for controlling a user output interface device for stimulating any one of a human vision, auditory sense, and tactile sense,
(1) receiving a second control signal including information for controlling the user output interface device from a touch sensing unit for sensing a touch input to the touch panel, (2) receiving information about the touch input provided from the touch sensing unit, Receiving a first control signal including information for controlling the user output interface device from an AP that performs one or more applications using the received first control signal, Wherein a delay between the second control signal and the first control signal is determined to be less than or equal to a predetermined value and that both the first control signal and the second control signal instruct the control of the user output interface device for the touch input And to discard the first control signal when the first control signal is for outputting the first control signal,
And controls the user output interface device according to the second control signal.
User output interface device driving chip. A touch sensing unit, a user output interface device driver chip for controlling a user output interface device that stimulates one of a human vision, auditory sense, and a tactile sense, and a power supply unit for providing power to the user output interface device driving chip As an electronic device,
The touch sensing unit may include: a first sensing unit for sensing a touch input to the touch panel connected to the touch sensing unit; a second control signal including information for controlling the user output interface device driving chip in response to the detected touch input; And to provide a second wake-up signal to the power supply in response to the touch input,
Wherein the user output interface device is driven by the user output interface device driving chip in accordance with the second control signal,
Wherein the power supply unit is configured to switch to an active mode to supply power to the user output interface device driving chip when the power supply providing unit is in the idle mode and when receiving the second wake up signal,
Electronic device. A touch sensing module, and a user output interface device driving module,
Wherein the power provided to at least some of the elements constituting the user output interface device driving module is separated from the power supplied to the touch sensing module and is supplied to the power supply provided outside the user interface device driving chip Lt; / RTI &gt;
The touch sensing module may include: (1) detecting a touch input to a touch panel connected to the user interface device driving chip, (2) information for controlling the user output interface device driving module in response to the detected touch input And to provide a second wake-up signal to the power supply corresponding to the touch input,
The user output interface device driving module is driven in accordance with the second control signal, and
Wherein the second wake-up signal is a signal for switching the power supply unit to the active mode when the power supply providing unit is in the idle mode so that the power supplying unit supplies power to the at least some of the devices.
User Interface Device Driven Chip.

Images