KR101874971B1 - Pointing system and operating method of the same - Google Patents

Abstract

A pointing system according to an embodiment of the present invention includes a multifunction pointer operated in a pointer mode and a handwriting mode; And a pointer terminal for generating a pointing marker or text information according to an operation of the multi-function pointer and providing the pointing marker or the text information to a beam projector, wherein the pointer terminal corrects the shaking of the pointing marker due to an increase in the user's heart rate.

Description

[0001] POSITIONING SYSTEM AND OPERATING METHOD OF THE SAME [0002]

The present invention relates to a pointing system and an operation method thereof, and more particularly, to a pointing system in which pointer sensitivity is adjusted according to a heart rate of a user, and a wireless writing is possible and an operation method thereof.

Generally, in a classroom or in a meeting room of a classroom or a conference hall, a large display device such as a video beam projector is provided on one side of the pulpit, and the instructor uses the board and the video beam projector appropriately to present it.

When a lecture or the like is conducted through the beam projector, the presenter uses the laser pointer to illuminate a corresponding spot on the displayed contents with a laser beam. Such a laser pointer serves as a pointer for indicating a chart or a presentation screen at a meeting, a construction site, and a briefing session.

Generally, the laser pointer is composed of a lens in front of a laser diode, and a rear battery is composed of a battery, which is a power source, and a switch which supplies and cuts off the power of the battery. The laser diode is turned on so that the laser is irradiated forward of the laser pointer.

Conventional laser pointers have a disadvantage that they are not visible when presenting, and laser pointers can not be handwritten or displayed on the PPT. For this reason, the presenter uses the laser pointer or pen function provided by the PowerPoint program with a mouse or pen-aware tablet to underline the PPT or point to important content. However, when using a mouse or tablet, it is inconvenient to use it on a flat surface or on a pedestal.

Korean Patent Publication No. 10-2006-0069642

A problem to be solved by the present invention is to provide pointing marker means via wireless communication instead of analog means for pointing and marking by irradiating laser light at the time of presentation.

The present invention also provides a pointing system capable of wireless writing as well as pointing signs at the time of presentation.

It is another object of the present invention to provide a pointing system capable of correcting the movement of the pointing marker means according to the position of a user.

According to an aspect of the present invention, there is provided a pointing system comprising: a multi-function pointer operated in a pointer mode and a handwriting mode; And a pointer terminal for generating pointer information or text information according to an operation of the multifunction pointer and providing the pointer marker or text information to a beam projector, wherein the multifunction pointer includes a first motion and a second motion using at least one of an acceleration and an angular velocity, An inertial sensor unit including at least one inertial sensor for detecting a second motion; An operation unit operating in the pointer mode when the first motion is detected and operating in the handwriting mode when a second motion is detected; A heart rate measuring unit for measuring a heart rate based on any one of a user's pulse wave, blood flow rate, skin conductivity, and skin temperature; A cursive attribute button for selecting a cursive attribute including a cursive color, a cursive size, and a cursive size when operating in the handwriting mode; A pointer mark shape selection button for selecting a shape of the pointer; And an output unit for providing output values of the inertial sensor unit, the operation unit, and the heart rate measurement unit to the pointer terminal using wireless communication, wherein the first movement is performed such that the front end of the multi- And the second movement is a state in which the front end of the multifunction pointer is moved in a horizontal direction for a preset time period and the pointer terminal is in a state in which when the multifunction pointer is operated in the pointer mode, Function pointer to display a pointer mark reflecting movement of the multi-function pointer; A second processing unit for processing a text corresponding to a movement of the pointer on the screen of the display unit when the multi-function pointer is operated in a writing mode; And a control unit for controlling operations of the first processing unit and the second processing unit based on an output signal of the multi-function pointer, wherein the first processing unit is operable, based on the operation signal of the pointer mode, A pointer marker generating unit for generating a pointer marker in the center of the screen; A shake measuring unit for measuring a shake of the pointer mark according to a change in heart rate of the user measured at the fixed position for a predetermined time; A correction value generating unit for generating a correction value corresponding to a difference between the measured value of the shake measuring unit and the preset threshold value; And a pointer landmark correction unit for correcting the shaking of the pointer landmark through the correction value. The landmark landmark correction unit includes a measurement value measuring a degree of shaking of the pointer mark due to an increase in the user's heart rate for a predetermined time at a fixed position, And generates a correction value corresponding to the difference between the values, and corrects the shaking of the pointer marking through the correction value.

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According to an aspect of the present invention, there is provided a method of operating a pointing system, the method comprising: when a multi-function pointer has a first motion and a second motion, Stage 1; A second step in which, when the operation mode is a pointer mode, a pointer terminal generates a pointer marker on a screen of a display language; And a third step of, when the operation mode is the handwriting mode according to the first movement, displaying the text corresponding to the motion of the multifunctional pointer after the pointer terminal generates a text input marker on the screen of the displayer The second step is to generate a correction value corresponding to a difference between a measurement value measuring the degree of shaking of the pointer mark due to a user's heart rate increase for a predetermined time at a fixed position and a predetermined threshold value, Wherein the multifunction pointer includes at least one inertial sensor for detecting a first motion and a second motion using at least one of an acceleration and an angular velocity generated according to a motion An inertia sensor unit; An operation unit operating in the pointer mode when the first motion is detected and operating in the handwriting mode when a second motion is detected; A heart rate measuring unit for measuring a heart rate based on any one of a user's pulse wave, blood flow rate, skin conductivity, and skin temperature; A cursive attribute button for selecting a cursive attribute including a cursive color, a cursive size, and a cursive size when operating in the handwriting mode; A pointing marker shape selection button for selecting a shape of the pointer; And an output unit for providing output values of the inertial sensor unit, the operation unit, and the heart rate measurement unit to the pointer terminal using wireless communication, wherein the first movement is performed such that the front end of the multi- And the second movement is a state in which the front end of the multifunction pointer is moved in a horizontal direction for a preset time period and the pointer terminal is in a state in which when the multifunction pointer is operated in the pointer mode, Function pointer to display a pointer mark reflecting movement of the multi-function pointer; A second processing unit for processing a text corresponding to a movement of the pointer on the screen of the display unit when the multi-function pointer is operated in a writing mode; And a control unit for controlling operations of the first processing unit and the second processing unit based on an output signal of the multi-function pointer, wherein the first processing unit is operable, based on the operation signal of the pointer mode, A pointer marker generating unit for generating a pointer marker in the center of the screen; A shake measuring unit for measuring a shake of the pointer mark according to a change in heart rate of the user measured in the fixed position for a predetermined time; A correction value generating unit for generating a correction value corresponding to a difference between the measured value of the shake measuring unit and the preset threshold value; And a pointer landmark correction unit for correcting the shaking of the pointer landmark through the correction value.

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According to the present invention, pointing display can be performed through wireless communication at the time of presentation, and no separate laser light is required.

In addition, the conventional laser pointer can not be written or displayed on the PPT, but the present invention can be handwritten, thereby enhancing the convenience of the presenter.

In addition, there is an advantage that the shaking of the pointer due to the tension of the user can be corrected at the time of presentation.

1 is an exemplary view illustrating a pointing system according to an embodiment of the present invention.
2 is a perspective view showing the multifunction pointer shown in FIG.
3 is a block diagram of the multifunction pointer shown in FIG.
4 is a block diagram illustrating the pointer terminal shown in FIG.
5 is a flowchart illustrating a method of operating a pointing system according to an embodiment of the present invention.
6 is a flowchart of S720 shown in FIG.
7 is a diagram illustrating an exemplary computing environment in which one or more embodiments disclosed herein may be implemented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when an element is referred to as " including " an element, it is to be understood that the element may include other elements as well as other elements, And does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Hereinafter, a pointing system and an operation method thereof according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram illustrating a pointing system according to an embodiment of the present invention. FIG. 2 is a perspective view of the multi-function pointer shown in FIG. 1, FIG. 3 is a block diagram of the multi- 4 is a block diagram showing the pointer terminal shown in FIG.

Referring to FIG. 1, a pointing system 100 according to an embodiment of the present invention may include a multi-function pointer 200 and a pointer terminal 300.

The multi-function pointer 200 and the pointer terminal 300 perform short-range wireless communication such as Bluetooth. The multi-function pointer 200 transmits an operation signal of an operation mode operated due to a motion locus and a motion locus to the pointer terminal 300, Lt; / RTI >

The pointer terminal 300 provides a pointing marker or a text to be displayed on an image imputed from a beam project to a display based on an operation signal of the multi-function pointer.

Meanwhile, the display device can be designed with various display panels. That is, the display unit may include organic light emitting diodes (OLED), a liquid crystal display panel (LCD panel), a plasma display panel (PDP), a vacuum fluorescent display (VFD), a field emission display ), And ELD (Electro Luminescence Display). Although the display panel is mainly made of an emission type, it does not exclude a reflective display (E-ink, P-ink, or photonic crystal). In addition, it may be implemented as a flexible display, a transparent display, or the like.

2 and 3, the multifunctional pointer 200 may be a device that operates to switch between a pointer mode and a writing mode based on a motion.

The multifunctional pointer 200 may include a sensor unit 210, an operation unit 220, a bio-signal measurement unit 230, and an output unit 240.

The sensor unit 210 may include at least one inertial sensor that detects motion using at least one of an acceleration and an angular velocity generated according to a motion.

The sensor unit 210 may include a chopping circuit, an amplifier circuit, a filter, and an A / D converter.

For example, the acceleration sensor senses the amount of change in speed with respect to the unit time. The acceleration sensor can be implemented in three axes. When implemented as a three-axis acceleration sensor, the acceleration sensors are provided with X, Y, and Z-axis acceleration sensors arranged in different directions and orthogonal to each other.

The acceleration sensor converts the output values of the X, Y, and Z axis acceleration sensors into digital values and provides them to the preprocessor. Accordingly, the electric signal output from the three-axis acceleration sensor is chopped, amplified, and filtered, and then converted into a digital voltage value.

The angular velocity sensor detects the angular velocity by detecting a change amount of the multi-function pointer 200 in a predetermined direction. As the angular velocity sensor, a gyroscope having three axes can be used.

The six axes of this inertial sensor can represent relative pointing. The multi-function pointer 200 of the present invention may be implemented by this relative pointing technique. A relative pointing technique refers to a pointing device and a device that does not have a direct mapping on the screen.

That is, it is possible to display the movement of the pointer on the screen by sensing the start position and the current position of the pointing device 100 using only the inertial sensor and mapping the position change amount.

Alternatively, it is also possible to implement an absolute pointing technique by using a geomagnetic sensor or the like.

The geomagnetic sensor is a sensor that can detect the azimuth angle by detecting the magnetic field flow. The geomagnetic sensor detects the azimuth coordinates of the multi-function pointer 200, and can detect the direction in which the multi-function pointer 200 is laid based on azimuth coordinates.

The geomagnetic sensor detects the geomagnetism by measuring the voltage value induced by the geomagnetism using a flux-gate or the like. The geomagnetic sensor can be implemented in two or three axes. In this case, since the geomagnetism output value calculated by each axial geomagnetic sensor depends on the magnitude of the surrounding magnetic field, it is general to perform normalization to map the geomagnetism output value within a predetermined range (for example, -1 to 1). The normalization is performed using a normalization factor such as a scale value or an offset value. In order to calculate the normalization factor, the output value should be calculated by rotating the geomagnetic sensor several times before detecting the maximum value and the minimum value of the output value. The normalized value using the normalization factor is used for azimuth correction.

The absolute pointing technique refers to a technique in which the position of the pointing device and the position of the pointer on the screen are directly mapped. Absolute pointing techniques can provide a more intuitive user experience. When a user points to an object on the screen through the multi-function pointer 200, a pointer is displayed at that position. When the absolute pointing technique is used, when the pointing is started, displaying the pointer at the first position provides the user with a pointing guide.

Next, the operation unit 220 may be a unit operated in either a pointer mode or a writing mode according to the first motion or the second motion detected by the inertial sensor.

For example, the first movement refers to a state in which the front end of the multi-function pointer moves toward the ground during a predetermined time, and the second movement refers to a state in which the front end of the multi-function pointer moves in a horizontal direction for a predetermined time.

Meanwhile, the operation unit 220 can switch to the pointer mode and the handwriting mode according to the user's setting by using the operation mode selection button.

Next, the bio-signal measuring unit 230 may include at least one sensor for measuring a heart rate based on any one of a user's pulse wave, blood flow, skin conductivity, and skin temperature.

The output unit 240 may include a communication module capable of transmitting the output signal of the multifunctional pointer 200 to the pointer terminal 300.

The communication module may be implemented with various communication technologies, and more specifically, may include a short-range communication module.

For example, the communication module may be a WIFI, a Wideband CDMA (WCDMA), a High Speed Downlink Packet Access (HSDPA), a High Speed Uplink Packet Access (HSUPA), a High Speed Packet Access (HSPA), a Mobile WiMAX (WiBro), LTE, a Bluetooth module, an IrDA (infrared data association), a NFC (Near Field Communication), a Zigbee, and a wireless LAN .

The multifunction pointer 200 may include a handwriting attribute selection button for selecting a handwriting attribute, which is an attribute of a handwriting handwritten at the time of operation in the handwriting mode.

The handwritten attribute selection button includes a handwritten color selection button for selecting the color of the generated handwritten body, a size of the generated handwritten body, And a cursive thickness selection button for selecting a thickness of a cursive to be generated.

In addition, the multi-function pointer 200 may include a pointing marker shape selection button that selects a shape of a pointing marker displayed on the screen of the display language.

4, the pointer terminal 300 according to an embodiment of the present invention includes a communication unit 310, an output port 320, a first processing unit 330, a second processing unit 340, and a control unit 350 .

The communication unit 310 communicates the output unit of the multi-function pointer.

The output port 320 is connected to an external beam projector.

The first processing unit 330 displays a pointing marker in which the movement of the pointer is reflected in the video image of the display unit, based on an operation signal of the pointer mode of the multi-function pointer 200. [

More specifically, the first processing unit 330 may include a pointer marker generation unit 331, a shake correction unit 332, a correction value generation unit 333, and a pointer mark correction unit 334.

When the operation signal of the pointer mode is input to the first processing unit, the pointer marker generation unit 331 generates a pointing marker that moves in the movement trajectory of the multi-function pointer to appear at the first position of the screen of the displayer. The first position may be the center point of the screen.

The shake measuring unit 332 measures the degree of shaking of the pointer mark due to an increase in the user's heart rate for a predetermined time at a fixed position.

The correction value generator 333 generates a correction value corresponding to a difference between the measured value of the shake measuring unit and a predetermined threshold value.

The pointer mark correcting unit 334 corrects the shaking of the pointer mark through the correction value.

.

The second processing unit 340 inputs text corresponding to the motion of the multifunctional pointer 200 to a video image of the display unit based on an operation signal of a writing mode of the multifunctional pointer 200. [

The control unit 350 controls the first processing unit and the second processing unit to operate based on operation signals (e.g., a first operation signal and a second operation signal) of the multi-function pointer 200.

5 is a flowchart illustrating a method of operating a pointing system according to an embodiment of the present invention. 6 is a flowchart of S720 shown in FIG.

5, in operation S700 of the pointing system according to an embodiment of the present invention, when the multi-function pointer 200 has the first motion or the second motion, 1 operation and an operation mode corresponding to the second motion (S710).

For example, when the operation mode is the pointer mode, the pointer terminal generates a pointer marker that varies in accordance with the size of the screen, the distance between the user and the displayer, and the user's position on the screen of the displayer (S720) When the operation mode is the handwriting mode, the pointer terminal 200 generates a text input marker on the screen of the displayer and displays text corresponding to the motion of the multi-function pointer 200.

In step S730, the text input marker is generated at the last pointing position in the pointer mode immediately before switching to the handwriting mode.

More specifically, if the movement of the multi-function pointer 200 according to the movement of the user is detected by the inertial sensor, the multi-function pointer 200 may be operated in an operation mode corresponding to the detected movement.

Referring to FIG. 6, in operation S720, when the operation mode is the pointer mode, the first processing unit 330 of the pointer terminal 200 sets the default setting value on the screen of the displayer based on the operation signal of the pointer mode A pointing marker is generated (S711).

Then, the degree of shaking of the pointer mark due to an increase in the heart rate of the user for a predetermined time at a fixed position is measured (S722). Thereafter, the correction value generator generates a correction value corresponding to a difference between the measured value measured in step S722 and a predetermined threshold value (S723), and the pointer mark correction unit corrects the shake of the pointer mark through the correction value S724).

Accordingly, the presenter can display the desired writing object on the output image using the pointing system 100 of the present invention, thereby further enhancing the understanding of presentation.

Furthermore, pointing display can be performed through wireless communication at the time of presentation, and there is an advantage that no separate laser light is required.

In addition, the conventional laser pointer can not be written or displayed on the PPT, but the present invention can be handwritten, thereby enhancing the convenience of the presenter.

In addition, there is an advantage that it is possible to suppress the shaking of the pointer mark due to the tense at the time of presenting the presentation of the user.

FIG. 7 is an illustration of an exemplary computing environment in which one or more embodiments disclosed herein may be implemented, and is illustrative of a system 1000 including a computing device 1100 configured to implement one or more of the embodiments described above. / RTI > For example, the computing device 1100 may be a personal computer, a server computer, a handheld or laptop device, a mobile device (mobile phone, PDA, media player, etc.), a multiprocessor system, a consumer electronics device, A distributed computing environment including any of the above-described systems or devices, and the like.

The computing device 1100 may include at least one processing unit 1110 and memory 1120. [ The processing unit 1110 may include, for example, a central processing unit (CPU), a graphics processing unit (GPU), a microprocessor, an application specific integrated circuit (ASIC), a field programmable gate array And may have a plurality of cores. The memory 1120 can be a volatile memory (e.g., RAM, etc.), a non-volatile memory (e.g., ROM, flash memory, etc.) or a combination thereof. In addition, the computing device 1100 may include additional storage 1130. Storage 1130 includes, but is not limited to, magnetic storage, optical storage, and the like. The storage 1130 may store computer readable instructions for implementing one or more embodiments as disclosed herein, and other computer readable instructions for implementing an operating system, application programs, and the like. The computer readable instructions stored in storage 1130 may be loaded into memory 1120 for execution by processing unit 1110. In addition, computing device 1100 may include input device (s) 1140 and output device (s) 1150.

Here, input device (s) 1140 may include, for example, a keyboard, a mouse, a pen, a voice input device, a touch input device, an infrared camera, a video input device, or any other input device. Also, output device (s) 1150 can include, for example, one or more displays, speakers, printers, or any other output device. In addition, computing device 1100 may use an input device or output device included in another computing device as input device (s) 1140 or output device (s) 1150. [

The computing device 1100 may also include communication connection (s) 1160 that allow the computing device 1100 to communicate with other devices (e.g., computing device 1300).

(S) 1160 may include a modem, a network interface card (NIC), an integrated network interface, a radio frequency transmitter / receiver, an infrared port, a USB connection or other Interface. Also, the communication connection (s) 1160 may include a wired connection or a wireless connection. Each component of the computing device 1100 described above may be connected by various interconnects (e.g., peripheral component interconnect (PCI), USB, firmware (IEEE 1394), optical bus architecture, etc.) And may be interconnected by the network 1200. As used herein, the terms "component," "system," and the like generally refer to a computer-related entity, which is hardware, a combination of hardware and software, software, or software in execution.

For example, an element may be, but is not limited to being, a processor, an object, an executable, an executable thread, a program and / or a computer running on a processor. For example, both the application running on the controller and the controller may be components. One or more components may reside within a process and / or thread of execution, and the components may be localized on one computer and distributed among two or more computers.

The present invention is not limited to the above-described embodiments and the accompanying drawings. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Pointing system
200: Multifunction pointer
210: inertia sensor unit
220:
230: biological signal measurement unit
240:
300: Pointer terminal
310:
320: Output port
330: first processing section
331: Pointer marker generation unit
332:
333:
334: Pointer marker correction unit
340: second processing section
350:

Claims (6)

A multi-function pointer operated in a pointer mode and a handwriting mode; And
And a pointer terminal for generating a pointer mark or text information according to an operation of the multi-function pointer and providing the pointer mark or text information to a beam projector,
The multi-
An inertial sensor unit including at least one inertial sensor for detecting a first motion and a second motion using at least one of an acceleration and an angular velocity generated according to a motion;
An operation unit operating in the pointer mode when the first motion is detected and operating in the handwriting mode when a second motion is detected;
A heart rate measuring unit for measuring a heart rate based on any one of a user's pulse wave, blood flow rate, skin conductivity, and skin temperature;
A cursive attribute button for selecting a cursive attribute including a cursive color, a cursive size, and a cursive size when operating in the handwriting mode;
A pointer mark shape selection button for selecting a shape of the pointer; And
And an output unit that provides output values of the inertial sensor unit, the operation unit, and the heart rate measurement unit to the pointer terminal using wireless communication,
Wherein the first movement is a state in which the front end of the multifunction pointer is moved to the ground for a predetermined time, the second movement is a state in which the front end of the multifunction pointer is moved in a horizontal direction for a predetermined time,
The pointer terminal includes:
A first processing unit for processing a pointer indicative of the movement of the multifunction pointer on the screen of the display unit when the multifunction pointer is operated in the pointer mode;
A second processing unit for processing a text corresponding to a movement of the pointer on the screen of the display unit when the multi-function pointer is operated in a writing mode; And
And a control unit for controlling operations of the first processing unit and the second processing unit based on an output signal of the multi-function pointer,
The first processing unit
A pointer marker generating unit for generating the pointer marker in the center of the screen of the display unit based on the operation signal of the pointer mode;
A shake measuring unit for measuring shake of a pointer mark according to a change in heart rate of a user measured at a fixed position for a preset time;
A correction value generating unit for generating a correction value corresponding to a difference between the measured value of the shake measuring unit and the preset threshold value; And
And a pointer landmark correction unit for correcting the shaking of the pointer landmark through the correction value,
The method comprising: generating a correction value corresponding to a difference between a measurement value measuring a degree of shaking of the pointer mark due to a user's heart rate increase for a preset time and a predetermined threshold value at a fixed position, The pointing system corrects the shaking of the object.
delete delete delete The operating method of the pointing system according to claim 1,
A first step of operating, when the multi-function pointer has the first motion and the second motion, in an operation mode corresponding to the first motion and the second motion;
A second step in which, when the operation mode is a pointer mode, a pointer terminal generates a pointer marker on a screen of a display language;
And a third step of, when the operation mode is the handwriting mode according to the first movement, displaying the text corresponding to the motion of the multifunctional pointer after the pointer terminal generates a text input marker on the screen of the displayer and,
The second step
The method comprising: generating a correction value corresponding to a difference between a measurement value measuring a degree of shaking of a pointer marker due to an increase in a user's heart rate during a predetermined time and a predetermined threshold value at a fixed position, Correcting the shake,
The multi-
An inertial sensor unit including at least one inertial sensor for detecting a first motion and a second motion using at least one of an acceleration and an angular velocity generated according to a motion;
An operation unit operating in the pointer mode when the first motion is detected and operating in the handwriting mode when a second motion is detected;
A heart rate measuring unit for measuring a heart rate based on any one of a user's pulse wave, blood flow rate, skin conductivity, and skin temperature;
A cursive attribute button for selecting a cursive attribute including a cursive color, a cursive size, and a cursive size when operating in the handwriting mode;
A pointing marker shape selection button for selecting a shape of the pointer; And
And an output unit that provides output values of the inertial sensor unit, the operation unit, and the heart rate measurement unit to the pointer terminal using wireless communication,
Wherein the first movement is a state in which the front end of the multifunction pointer is moved to the ground for a predetermined time, the second movement is a state in which the front end of the multifunction pointer is moved in a horizontal direction for a predetermined time,
The pointer terminal includes:
A first processing unit for processing a pointer indicative of the movement of the multifunction pointer on the screen of the display unit when the multifunction pointer is operated in the pointer mode;
A second processing unit for processing a text corresponding to a movement of the pointer on the screen of the display unit when the multi-function pointer is operated in a writing mode; And
And a control unit for controlling operations of the first processing unit and the second processing unit based on an output signal of the multi-function pointer,
The first processing unit
A pointer marker generating unit for generating the pointer marker in the center of the screen of the display unit based on the operation signal of the pointer mode;
A shake measuring unit for measuring a shake of the pointer mark according to a change in heart rate of the user measured in the fixed position for a predetermined time;
A correction value generating unit for generating a correction value corresponding to a difference between the measured value of the shake measuring unit and the preset threshold value; And
And a pointer landmark correction unit for correcting the shaking of the pointer landmark through the correction value.
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