KR20210088038A - Wearable keyboard - Google Patents

Abstract

According to an embodiment, a wearable keyboard is provided. The wearable keyboard comprises: pressure sensors installed to correspond to the ends of all the fingers of a user; flex sensors installed to correspond to the first to third joints of the fingers of the user; gyro sensors installed at the ends of the index fingers of the user; a communication module for communicating with an external device; a memory for storing one or more instructions; and a processor for executing the one or more instructions stored in the memory. The processor can determine an input signal for typing on a virtual QWERTY keyboard from first sensing data obtained from the pressure sensor, determine a position where the input signal is detected from second sensing data obtained from the flex sensors, generate an output signal based on the result of determining the position of the input signal input from the index fingers from third sensing data obtained from the gyro sensors, and transmit the output signal to the external device through the communication module. Therefore, the portability of the keyboard can be maximized.

Description

Wearable Keyboard {WEARABLE KEYBOARD}

The present invention provides a wearable keyboard with high mobility and recognition rate using a plurality of sensors.

Although the penetration rate of mobile devices has increased, it has become possible to perform various tasks using mobile devices regardless of location. However, when typing using a mobile device having a small screen, the virtual keyboard is inconvenient to cover the screen. In order to solve this inconvenience, Bluetooth keyboards, projection keyboards, etc. have been invented, but in the case of such keyboards, there are disadvantages such as reduced mobility of mobile devices and a low recognition rate.

Recently, a ubiquitous computing technology such as a wearable smart device or a wearable computer has emerged. These technologies could help make computers part of the human body by allowing them to be worn like clothes or glasses. From the point of view of a wearable computer, development of an input device capable of more conveniently typing or inputting data is required.

In response to this demand, the conventional wearable input device using a finger generates input information differently according to the motion of the finger or the location where the finger touches and uses it as input information. It was a method in which a character was input by touching a specific part and using the corresponding gesture or input information assigned to the part of the body. In this case, when a specific gesture cannot be properly recognized or a specific body part cannot be touched, proper input information cannot be generated. Accordingly, the need for a wearable keyboard with good mobility and convenient typing has increased.

Japanese Laid-Open Patent No. 2000-330692 (2000.11.30) Japanese Patent Laid-Open No. 2003-337653 (2003.11.28)

An object of the present disclosure is to provide a wearable keyboard having a high recognition rate and high mobility through a glove-type wearable device equipped with different types of sensor units according to one disclosure.

A wearable keyboard is provided according to one disclosure, wherein the wearable keyboard includes a pressure sensor installed to correspond to the distal end of all fingers of the user, a flex sensor installed to correspond to the first to third joints of the user's finger, and a gyro sensor installed to the distal end of the user's index finger. , a communication module communicating with an external device, a memory storing one or more instructions, and a processor executing one or more instructions stored in the memory, wherein the processor is an input for inputting a virtual QWERTY keyboard from first sensing data obtained from the pressure sensor Determining the signal, determining the position where the input signal was detected from the virtual QWERTY keyboard from the second sensing data obtained from the flex sensor, and determining the position of the input signal input from the index finger from the third sensing data obtained from the gyro sensor An output signal may be generated based on the result, and the output signal may be transmitted to an external device through the communication module.

According to one disclosure, the processor determines whether the first sensed data is detected above the threshold value, determines the first sensing data detected above the threshold value as the first keyboard input, and according to the degree of bending of the user's finger Determining the y-axis position of the first keyboard input from the changing second sensing data, determining an output value corresponding to the determined y-axis position of the first keyboard input, and transmitting the output value to an external device using the communication module characterized.

According to one disclosure, when the first keyboard input is an input by the index finger, the processor additionally determines the position of the first keyboard input in the x-axis direction by using the third sensing data, and the determined x-axis position of the first keyboard input and determining an output value corresponding to the y-axis position.

According to one disclosure, the processor determines a threshold value of the first sensed data based on the user's profile, and when a pressure equal to or greater than the threshold value is sensed through the pressure-sensitive sensor, at least one key corresponding to the pressure-detected finger is determined as a preliminary output value, and based on location information obtained from at least one of the second sensing data and the third sensing data, any one of the preliminary output values is determined as the output value.

According to one disclosure, the processor maps at least one preliminary output value to each of ten pressure-sensitive sensors installed in the wearable keyboard, and when it is determined that the position of the input signal is not clear, at least one mapped to the pressure-sensitive sensor that obtained the input signal and transmitting one preliminary output value to an external device, and determining an output signal based on a user input for selecting one of the at least one preliminary output values.

According to one disclosure, the processor may set the hysteresis parameter range to less than 20% in order to reduce the error rate of the user input signal recognized by the pressure-sensitive sensor, the gyro sensor, and the flex sensor.

According to one disclosure, according to the wearable keyboard according to the present invention, unlike a conventional input device, it can be worn on the user's hand, and information can be input while wearing the hand, thereby maximizing the portability of the keyboard.

According to one disclosure, the recognition rate of the wearable keyboard can be increased by accurately detecting the input of the index finger responsible for six keys using a gyro sensor installed only on the index finger.

According to the disclosure, a complementary filter is designed for the 6-axis gyro/accelerometer sensor and the error rate is reduced by setting the hysteresis range to 20%, and the hysteresis range is also provided for the flex sensor to provide the effect of reducing the error rate. In addition, since the flex sensor is attached to the gloves only at both ends and in the middle in order not to interfere with the user's movement, it provides an effect of helping the user's movement using the wearable keyboard.

1 is a diagram schematically illustrating an operation of a wearable keyboard according to an exemplary embodiment.
FIG. 2 is a flowchart illustrating a series of processes of determining an output value from an input signal in the wearable keyboard according to one disclosure and transmitting the determined output value to an external device.
3 is a view for explaining a detailed configuration of the wearable keyboard according to the disclosure.
FIG. 4 is a diagram for explaining an operation of recognizing first sensing data in a wearable keyboard according to an embodiment of the present disclosure;
5 is a view for explaining the main configuration of the wearable keyboard according to the disclosure.

Terms used in this specification will be briefly described, and an embodiment of the present invention will be described in detail.

The terms used in this specification have been selected as currently widely used general terms as possible while considering the functions in the present invention, which may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding invention. Therefore, the terms used in this specification should be defined based on the meaning of the term and the overall content of the present invention, rather than the name of a simple term.

When a part "includes" a certain element throughout the specification, this means that other elements may be further included, rather than excluding other elements, unless otherwise stated. In addition, terms such as "...unit" and "module" described in the specification mean a unit that processes at least one function or operation, which may be implemented as hardware or software, or a combination of hardware and software. .

1 is a diagram schematically illustrating an operation of a wearable keyboard according to an exemplary embodiment.

According to one disclosure, the wearable keyboard 100 may be manufactured in the form of a pair of gloves. According to one disclosure, the wearable keyboard 100 is a device for performing input by being worn on the user's hand, and in particular, refers to a keyboard without a keyboard. According to one disclosure, the wearable keyboard 100 may recognize a user's hand motion through a sensor and transmit an output value of recognizing a character meaning a hand motion to the external device 200 using a wireless communication module.

According to one disclosure, the wearable keyboard 100 determines an input signal for inputting the virtual QWERTY keyboard from the first sensing data obtained from the pressure-sensitive sensor 101 , and virtual from the second sensing data obtained from the flex sensor 111 . Determine the position where the input signal is detected in the QWERTY keyboard, and generate an output signal based on the result of determining the position of the input signal input from the index finger from the third sensing data obtained from the gyro sensor 103, and connect the communication module output signal can be transmitted to an external device.

According to one disclosure, the external device 200 includes a display capable of displaying data received from the outside through a communication module, and includes a notebook PC, a desktop PC, an MP3 player, a Portable Multimedia Player (PMP), and a Personal Digital Assistant (PDA). , it is self-evident that it can be applied to all information and communication devices and multimedia devices such as tablet PCs, mobile phones, smart phones, etc. and their applications.

According to one disclosure, the wearable keyboard 100 and the external device 200 may be divided into a master terminal and a slave terminal according to who serves as a host or an access point. In other words, a terminal that generates an identifier, that is, an SSID (Service Set Identifier) for pairing and accepts pairing becomes a master, and a terminal that requests pairing from such a master terminal becomes a slave. Also, in the present invention, a terminal may be a master or a slave. In addition, in the present invention, the terminal may download and install an application for performing such a pairing function from an online market. In addition, in the present invention, the terminal may receive and use an application from a cloud server that provides a cloud computing service.

According to one disclosure, the wearable keyboard 100 may recognize a user's hand gesture using at least three types of sensors. More specifically, the wearable keyboard 100 uses the pressure sensor 101, the flex sensor 111, and the gyro sensor 103 to recognize the user's hand gesture, and from the recognized hand gesture, the user wants to input the character, etc. as an output value. may be transmitted to the device 200 .

According to one disclosure, the pressure-sensitive sensor 101 may be installed to correspond to the positions of all finger distal ends of the user, and may determine whether the user inputs the virtual keyboard. When a pressure equal to or greater than a predetermined threshold is input, the wearable keyboard 100 may determine that the user has inputted the virtual keyboard, and may determine the signal input by the user as the input signal.

According to one disclosure, the flex sensor 111 may be installed so as to correspond to the first joint to the third joint of the user's finger. According to one disclosure, the flex sensor 111 may measure the bending information of the finger from a resistance value that is changed according to the bending degree of the user's finger in order to measure the bending degree of the user's finger. The flex sensor 111 may be made of a flexible element, and may include a bending resistance measuring element detachably attached to the terminal of the head socket. Accordingly, the flex sensor 111 is easily replaceable in the glove-type wearable keyboard 100 .

According to one disclosure, the gyro sensor 103 may be installed to correspond to the user's index finger. The gyro sensor 103 is generally used to accurately determine the input position of the index finger, which has the widest keyboard input range. More specifically, the wearable keyboard 100 may determine the output value by determining the left and right (x-axis) positions of the index finger from the sensing signal of the gyro sensor 103 .

It will be described in more detail below.

2 is a flowchart for explaining a series of processes of determining an output value from an input signal in a wearable keyboard according to one disclosure and transmitting the value to an external device.

According to one disclosure, the virtual QWERTY keyboard is a means for receiving a key set for each finger of the wearable keyboard 100 rather than the actual keyboard, and the user can input the virtual QWERTY keyboard through a finger input according to inertia. have.

According to one disclosure, in block 201 , the wearable keyboard 100 may determine whether the first sensing data obtained from the pressure-sensitive sensor corresponds to a threshold value or more. According to one disclosure, the first sensed data represents a pressure signal recognized by the wearable keyboard 100 through a pressure sensor. For example, when a user applies pressure to a flat bottom surface while wearing the wearable keyboard 100, when the amount of pressure applied by the pressure sensor corresponds to a threshold value or more, the input value is converted to the first sensing data can decide According to one disclosure, when the value of the first sensed data is less than or equal to the threshold value, the wearable keyboard 100 may reduce energy for analyzing unnecessary input by determining it as an error value rather than data for inputting the keyboard. .

According to one disclosure, the wearable keyboard 100 may compare the pressure input from the pressure sensor with a predetermined threshold, and select and recognize the input level according to the comparison result. The threshold value by one start may be a value preset by the user. In addition, the threshold value according to the initiation may be a pressure value customized to the user based on the user's profile.

According to one disclosure, the wearable keyboard 100 may set a time point at which a pressure equal to or greater than a threshold value is inputted as a specific time point or a specific time period, and selects the input level according to the pressure input at a recognition time. can be characterized as Here, the recognition time may be set to a time of 50 ms to 150 ms based on a point in time when a pressure of a predetermined level or more is started to be input from the pressure-sensitive sensor.

According to one disclosure, in block 202, the wearable keyboard 100 may determine the y-axis position of the input signal from the second sensing data obtained from the flex sensor. According to one disclosure, the wearable keyboard 100 may determine a preset output value for the predetermined finger based on the predetermined finger that has acquired the first sensing data.

According to one disclosure, the preliminary output value indicates one keyboard key per line of a predetermined virtual QWERTY keyboard. For example, based on the English virtual QWERTY keyboard keyboard, W. S. X may be assigned to the left ring finger, and E, D, and C may be assigned to the left middle finger. However, in the case of the index finger, two keyboard keys may be assigned per line of the virtual QWERTY keyboard. For example, based on the English virtual QWERTY keyboard, Y, U, H, J, N, M may be assigned to the index finger of the right hand, and T, R, G, F, B, and V may be assigned to the index finger of the left hand. can be

According to one disclosure, the wearable keyboard 100 may determine the output value of the signal input by the user by determining the y-axis position of the finger at which the input signal is detected from the second sensing data. In this case, the wearable keyboard 100 may determine a reference point for determining a y-axis position before inputting a character after starting pairing with the external device 200 . For example, the wearable keyboard 100 may receive a message requesting to start inputting text from the external device 200 , and may set a reference point in response to receiving a message requesting to set a reference point on the y-axis. Also, according to another embodiment, the wearable keyboard 100 may set a reference point through an application for keyboard input. The method of setting the y-axis reference point is not limited.

According to one disclosure, in block 203 , the wearable keyboard 100 may determine whether the input signal is a signal obtained from the index finger. When the input signal is the index finger, since it has two preliminary output values at the same y-axis position, an additional process for accurate position determination is required.

According to one disclosure, in block 204 , when it is determined that the input signal is an input signal from the index finger, the wearable keyboard 100 may determine the x-axis position of the input signal from the third sensing data. According to one disclosure, the wearable keyboard 100 may preset a reference point for determining an x-axis position. The wearable keyboard 100 according to one disclosure may set a reference point for determining the left and right positions of the input signal at a predetermined time point after being connected to an external device. The wearable keyboard 100 may determine whether the signal is detected from the left side or the right side from the reference point using the signal sensed by the gyro sensor. For example, when the y-axis position of the input signal acquired from the right index finger is the uppermost part, the preliminary output values are Y and U, and when it is determined as the right value based on the reference point, the final output value is U.

According to one disclosure, in block 205 , the wearable keyboard 100 may determine an output value from location information of an input signal. The wearable keyboard 100 may determine the final output value by combining the position information of the input signal. For example, when a plurality of input signals are input, a value obtained by combining the plurality of input signals may be transmitted to an external device as an output value.

According to one disclosure, in block 206 , the wearable keyboard 100 may transmit an output value to the upper body device using a communication module. According to one disclosure, the communication module may include a module capable of wireless or wired communication. More specifically, the communication module may include a short-range wireless communication module, for example, the short-range wireless communication method may include various methods such as NFC method, Bluetooth, Wi-Fi, Zigbee, barcode recognition method, QR code recognition method, etc. have.

3 is a view for explaining a detailed configuration of the wearable keyboard according to the disclosure.

According to one disclosure, the wearable keyboard 100 may be manufactured in the form of a glove and mounted on the user's hand. In addition, the wearable keyboard may be made of a polyamide resin composition.

Here, the wearer polyamide resin composition is prepared by reacting vegetable oil with alcohol, and 15 to 25 wt% of an epoxy-based ester compound represented by Formula 1, a phthalate-based ester compound, a terephthalate-based ester compound, a phthalate-based and 20 to 25 wt% of at least one ester compound selected from the group consisting of terephthalate-based ester mixtures and trimellitate-based ester compounds, high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), ethylene-propylene copolymer 5 to 10% by weight of at least one olefinic rubber polymer selected from copolymer (EPM), ethylene-propylene-diene copolymer (EPDM), ethylene-butene copolymer, ethylene-octene copolymer, and ethylene-butadiene copolymer, relative Viscosity (25°C) of 2.0 to 2.8 cP and a number average molecular weight of 20,000 to 200,000 g/mol, 30 to 50 wt% of polyamide, a conjugated diene rubber, an aromatic vinyl compound, and a vinyl aromatic compound containing vinyl cyanide-vinyl It is characterized in that it consists of a polyamide resin composition containing 5 to 15% by weight of a cyanide compound copolymer.

[Formula 1]

이고, 상기 R_x 및 R_y는 각각 독립적으로 수소, (C1-C5)알킬 또는 이며, 상기 알킬은 (C1-C5)알킬 또는 이 더 치환될 수 있고, 상기 R₄₁ 및 R₄₂는 각각 독립적으로 (C8-C20)에폭시알킬이며, 상기 n은 1 내지 3에서 선택되는 정수임).(Wherein R4 is (C8-C20) epoxyalkyl, R5 is (C1-C10) alkyl or

and R _x and R _y are each independently hydrogen, (C1-C5)alkyl or, wherein the alkyl may be further substituted with (C1-C5)alkyl or, wherein R ₄₁ and R ₄₂ are each independently (C8-C20) epoxyalkyl, wherein n is an integer selected from 1 to 3).

In addition, the wearable keyboard may include a coating layer in order to increase the recognition rate of the input signal generated due to the operation of the user's finger.

The coating layer is more specifically an antistatic layer, it is possible to prevent the generation of static electricity, it is possible to prevent the adhesion of dust, it is possible to prevent impurities such as dust, it is possible to increase the recognition rate of the input signal. In addition, it is excellent in adhesion to the polyamide resin composition, so that the adhesion of the coating layer is excellent.

The antistatic layer is polysiloxane represented by the following formula (2); Conductive fillers and graphite may include:

[Formula 2]

here,

m is an integer from 1 to 100,

p is an integer from 3 to 10,

R ₁ to R ₃ are the same as or different from each other, and each independently selected from the group consisting of hydrogen, deuterium, a hydroxy group, a substituted or unsubstituted C1-C30 alkyl group, or a substituted or unsubstituted C6-C30 aryl group, ,

The substituted alkylene group, substituted arylene group, substituted alkyl group and substituted aryl group are hydrogen, deuterium, cyano group, nitro group, halogen group, hydroxy group, alkyl group having 1 to 30 carbon atoms, cycloalkyl group having 1 to 20 carbon atoms, cycloalkyl group having 1 to 20 carbon atoms. An alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, an aralkyl group having 7 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, a heteroaryl group having 5 to 60 nuclear atoms, a heteroarylalkyl group having 6 to 30 carbon atoms , C1-C30 alkoxy group, C1-C30 alkylamino group, C6-C30 arylamino group, C6-C30 aralkylamino group, C2-C24 hetero arylamino group, C1-C30 alkylsilyl It is substituted with one or more substituents selected from the group consisting of a group, an arylsilyl group having 6 to 30 carbon atoms, and an aryloxy group having 6 to 30 carbon atoms, and when substituted with a plurality of substituents, they are the same or different from each other.

More preferably, the compound represented by Formula 2 may be a compound represented by Formula 3 below:

[Formula 3]

Here, m and p are as defined in Formula 2 above.

The conductive filler may be selected from the group consisting of silica, alumina, and mixtures thereof, but is preferably alumina, but is not limited thereto. The conductive filler has a particle diameter of 30 to 50 μm, but is not limited to the above example. The conductive filler may exhibit electrical conductivity.

The graphite may be included in a small amount to continuously maintain the antistatic effect in the antistatic layer. Considering that graphite is an expensive conductive filler, it is included in a small amount in the antistatic layer in the present invention to maintain a continuous antistatic effect.

More specifically, the antistatic layer of the present invention may include polysiloxane represented by Formula 2; Including conductive fillers and graphite, it may exhibit an antistatic effect. The polysiloxane is divided into a hydrophilic portion and a hydrophobic portion. The hydrophilic moiety is capable of hydrogen bonding with a water molecule by an oxygen atom containing a lone pair of electrons. On the other hand, the alkyl group acts as a hydrophobic group. Accordingly, the hydrophilic part is positioned on the surface of the antistatic layer, and the hydrophobic part is positioned in the opposite direction, thereby exhibiting a semi-permanent antistatic effect.

For forming the antistatic layer, the antistatic composition is more specifically polysiloxane represented by the formula (2); It can be prepared by mixing a conductive filler, graphite, and an organic solvent.

The organic solvent may be selected from the group consisting of ethanol, methanol, butanol, hexane, propane, toluene, phenol, and mixtures thereof.

The antistatic composition may include 40 to 80 parts by weight of the polysiloxane represented by Formula 2, 30 to 50 parts by weight of the conductive filler, and 5 to 10 parts by weight of the graphite based on 100 parts by weight of the organic solvent. In the case of the above range, a synergistic effect of critical significance is expressed as an antistatic synergistic effect due to the interaction of each component, and when it is out of the above range, the synergistic effect is rapidly reduced or almost absent.

More preferably, the viscosity of the antistatic composition is 1,200 to 1,500 cP, and when the viscosity is less than 1,200 cP, there is a problem that it is not easy to form an antistatic layer because it flows down during coating on one surface, and when it exceeds 1,500 cP There is a problem in that it is not easy to form a uniform antistatic layer.

[Preparation Example: Preparation of Coating Layer]

1. Preparation of coating composition

An antistatic composition was prepared by mixing polysiloxane represented by the following Chemical Formula 3, a conductive filler, and graphite in an organic solvent in which toluene and phenol were mixed in a weight ratio of 1:1:

[Formula 3]

Here, m is an integer of 10 to 30, and p is an integer of 3 to 5.

A more specific composition of the antistatic composition is shown in Table 1 below.

DY1 DY2 DY3 DY4 DY5 DY6 organic solvent 100 100 100 100 100 100 polysiloxane 20 30 40 60 80 100 alumina 10 20 30 40 50 60 graphite One 3 5 7 10 15

(unit parts by weight) The alumina has a particle diameter of 30 to 50 μm.

2. Preparation of protective layer

The antistatic composition of HS 1 to HS 6 was applied to one surface of the base layer prepared using the polyamide resin, and then the antistatic layer was formed by thermal curing.

[Experimental example: Antistatic effect test]

1. Viscosity Measurement

Before forming the antistatic layer on one surface of the polyamide base layer, the viscosity of the antistatic composition was measured. Viscosity was measured using a rheometer (Rheometer, Compac-100, Sun Sci. Co., Japan). The viscosity measurement results are shown in Table 2 below.

DY1 DY2 DY3 DY4 DY5 DY6 Viscosity (cP) 620 800 1010 1400 1950 2400

2. Measurement of surface electrical resistance

For the protective layer in which the antistatic layer of DY 1 to DY 6 was formed on one surface of the polyamide base layer, the surface electrical resistance was measured using a Resistance Meter SIMCO resistor ST-4 (25° C., 50% relative humidity).

As a comparative example, the surface electrical resistance of the polyamide base layer on which the antistatic layer was not formed was also measured.

comparative example DY1 DY2 DY3 DY4 DY5 DY6 surface electrical resistance
(Ω/cm ² ) 7.4×10 ¹¹ to 1.6×10 ¹² 6.4×10 ⁹ to 1.4×10 ¹⁰ 1.4×10 ⁹ to 1.6×10 ¹⁰ 7.2×10 ⁸ to 6.1×10 ⁹ 4.4×10 ⁷ to 2.1×10 ⁸ 6.5×10 ⁷ to 4.5×10 ⁸ 5.8×10 ⁸ to 7.8×10 ⁸

According to Table 3, compared to the comparative example in which the antistatic layer is not formed, since the surface electrical resistance of DY 1 to DY 6 is low, the electrical conductivity is excellent, and it can be confirmed that an excellent antistatic effect is exhibited.

3. Evaluation of surface appearance

Due to the difference in viscosity of the antistatic composition, after the coating layer was prepared, sensory evaluation was performed on whether a uniform surface was formed. Whether or not a uniform coating layer was formed was evaluated, and evaluation was performed according to the following criteria.

○: uniform coating layer formation

×: Formation of a non-uniform coating layer

DY1 DY2 DY3 DY4 DY5 DY6 sensory evaluation × × ○ ○ ○ ×

When the coating layer is formed, if the viscosity is less than a certain level, flow occurs on the surface of the polyamide, and formation of a uniform coating layer is difficult in many cases. Accordingly, there may be a problem in that the production yield is lowered. In addition, even when the viscosity is too high, it is difficult to uniformly apply the composition to form a uniform coating layer.

According to one disclosure, the wearable keyboard 100 may include ten pressure-sensitive sensors 101 installed to correspond to the distal ends of each of the user's ten fingers. According to one disclosure, the ten pressure-sensitive sensors 101 may include unique identification information corresponding to each finger. Accordingly, when a pressure equal to or greater than a threshold value is sensed, the wearable keyboard 100 may determine a preliminary output value by determining a finger at which a signal is sensed.

According to one disclosure, the flex sensor 111 may be installed to correspond to the first joint to the third joint of the user's finger in order to measure the degree of bending of the user's finger. According to one disclosure, the flex sensor 111 may be attached to the glove only at both ends and the middle portion of the flex sensor 111 for convenience of movement of the user's finger.

According to one disclosure, the gyro sensor 103 may be installed on the index finger of both hands of the user to determine the x-axis position to which the index finger is input. The gyro sensor 103 measures the direction information of the hand. Additionally, the wearable keyboard 100 may include an acceleration sensor for measuring acceleration information, a gyro sensor for measuring rotation information of the hand, and a geomagnetic sensor for measuring the direction of the geomagnetism. The measured value of the gyro sensor 103 may be provided to an inertial measurement unit (IMU). The inertial measuring device may be provided in the form of one integrated unit consisting of a total of three sensors: an accelerometer capable of measuring movement inertia, a gyrometer capable of measuring rotational inertia, and a magnetic field capable of measuring an azimuth. Rotation information on three axes, ie, pitch, roll, and yaw, may be obtained by using the measured values of the gyro and magnetic fields.

According to one disclosure, the processor 115 sets the hysteresis parameter range to less than 20% in order to reduce the error rate of the user input signal recognized by the pressure-sensitive sensor 101 , the gyro sensor 103 and the flex sensor 111 . can

FIG. 4 is a diagram for explaining an operation of recognizing first sensing data in a wearable keyboard according to an embodiment of the present disclosure;

In FIG. 4 , L1 , L2 , and L3 denote graphs representing increases and decreases in pressure when the user intentionally applies forces of different magnitudes to the first to third input levels. In other words, it refers to a case in which the force is applied to the weak level, medium level, and strong level, respectively. By the start, it can be confirmed that the force applied to the floor surface according to the user's input starts to increase rapidly at about 40-50 ms, peaks at about 80-100 ms, and then ends at about 110-120 ms.

Considering the experimental results as described above, the recognition time is preferably set to a time of 50 ms to 150 ms based on the time when the pressure of a predetermined size or more is started to be input from the pressure-sensitive sensor unit 200 . And it is more preferably set to a time of 70 ms to 110 ms. Here, it can be seen that when a time less than 50 ms or greater than 150 ms is set as the recognition time, the magnitude of the pressure applied according to the input applied to the wearable keyboard cannot be measured correctly.

The recognition time may be set based on a time when the pressure has a maximum value during a predetermined time from the time when the pressure of a predetermined level or more is started to be input from the pressure-sensitive sensor 101 . Preferably, the time when the pressure has a maximum value may be the recognition time.

Here, the wearable keyboard 100 may analyze the change in the magnitude of the input pressure without setting a fixed recognition time, and select the input level based on the magnitude of the pressure at the point in time when the pressure has a maximum value. In this way, when the maximum pressure value is used, there is an effect that the user can more accurately recognize the amount of pressure intended by the user and determine the input level accordingly.

To this end, the wearable keyboard 100 may store the amount of pressure input from the pressure-sensitive sensor 101 over time according to time, and determine the input level by using the largest pressure among the stored pressures.

However, in the case of using the maximum value as described above, memory is required to identify the maximum value and power for signal processing may be consumed, so that the previously set recognition time may be used in order to save memory and power. When the preset recognition time is used as described above, the input level can be determined using only the pressure input at the corresponding recognition time, thereby saving memory and minimizing power consumption for signal processing.

According to another embodiment, the wearable keyboard 100 may set the most suitable threshold for each user according to the user's input in order to recognize the input level.

According to one disclosure, the threshold value may be selected and set according to a user's selection input from among a plurality of values presented to the user by a setting program driven by the wearable keyboard 100 . For example, the designer of the setting program measures the degree of force applied when inputting the wearable keyboard 100 for users having each age, gender, and physical condition according to the statistical result of the experiment, and each age, gender, and physical condition A threshold value most suitable for a user having a condition is determined, and accordingly, a threshold value for each user profile according to the user's age, gender, and physical condition can be set in a setting program. For example, in a setting program driven by the wearable keyboard 100, a threshold value is preset for each user profile, and a preset threshold value can be used for the selected profile by receiving a user's selection input for the user profile. . For example, if the setting program pre-stores a threshold value corresponding to a user profile for each age and age group, and the user selects a female user profile or a user profile in her twenties, the wearable keyboard 100 displays the user profile of a woman in her twenties. A preset threshold value (first threshold: 0.5N, second threshold 3N) may be used.

Alternatively, the threshold value may be set in such a way that the wearable keyboard 100 uses pressure generated according to each user's touch input. Here, the wearable keyboard 100 may set a predetermined threshold as a comparison standard in order to select the input level using the pressure input from the pressure-sensitive sensor 101 .

5 is a view for explaining the main configuration of the wearable keyboard 100 according to the disclosure.

The wearable keyboard 100 may include a sensor unit 105 , a communication module 114 , a battery 116 , a control unit 115 , and a memory 112 .

According to one disclosure, the sensor unit 105 may include various sensors including a pressure sensor, a gyro sensor, and a flex sensor. For example, the sensor unit 105 may include a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or It may include an illuminance sensor.

According to one disclosure, the battery 116 includes a battery that supplies power required to perform a function of the wearable keyboard 100 , and may include, for example, a lithium polymer battery.

In addition, the wearable keyboard 100 may include a memory 112 that stores one or more instructions and a processor 115 that executes one or more instructions stored in the memory 112 .

According to one disclosure, the processor 115, for example, by driving software (eg, a program) to at least one other component (eg, hardware or software component) of the wearable keyboard 100 connected to the processor 115 can be controlled, and various data processing and operations can be performed. The processor 115 may load a command or data received from another component (communication module 114 ) into a volatile memory for processing, and store the result data in a non-volatile memory. According to an embodiment, the processor 115 operates independently of the main processor (eg, a central processing unit or an application processor), and additionally or alternatively, uses less power than the main processor or an auxiliary specialized for a specified function. It may include a processor (eg, a graphics processing unit, an image signal processor, a sensor hub processor, or a communication processor). Here, the auxiliary processor may be operated separately from or embedded in the main processor.

According to one disclosure, the communication module 114 may support establishment of a wired or wireless communication channel between the wearable keyboard 100 and the external device 200 and performing communication through the established communication channel. The communication module 114 may include one or more communication processors that support wired communication or wireless communication, operated independently of the processor 115 (eg, an application processor). According to an embodiment, the communication module 114 may be a wireless communication module (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (eg, a local area network (LAN) communication module). ) communication module, or power line communication module).

According to one disclosure, when the first keyboard input is an input by the index finger, the processor 115 additionally determines the position of the first keyboard input in the x-axis direction by using the third sensing data, and It is characterized in that an output value corresponding to the x-axis position and the y-axis position is determined.

According to one disclosure, the processor 115 determines a threshold value of the first sensed data based on the user's profile, and when a pressure equal to or greater than the threshold value is sensed through the pressure-sensitive sensor, at least one corresponding to the pressure-detected finger. It is possible to determine a key of as a preliminary output value, and determine any one of the preliminary output values as an output value based on location information obtained from at least one of the second sensing data and the third sensing data.

According to one disclosure, the processor 115 maps at least one preliminary output value to each of the ten pressure-sensitive sensors installed in the wearable keyboard, and when it is determined that the position of the input signal is not clear, the input signal is mapped to the pressure-sensitive sensor obtained The at least one preliminary output value may be transmitted to an external device, and an output signal may be determined based on a user input for selecting any one of the at least one preliminary output value.

According to one disclosure, the memory 112 may store a program for processing and controlling the processor 115 , and may also store data input to or output from the apparatus of the present invention. Programs stored in the memory 112 may be classified into a plurality of modules according to their functions, where the plurality of modules are software, not hardware, and are functionally operated modules.

Programs stored in the memory 112 may be classified into a plurality of modules according to their functions, where the plurality of modules are software, not hardware, and may refer to modules that are functionally operated.

The method according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improved forms of the present invention are also provided by those skilled in the art using the basic concept of the present invention as defined in the following claims. belong to the scope of the right.

Claims (7)

a pressure sensor installed to correspond to the end of all fingers of the user;
a flex sensor installed so as to correspond to the first to third joints of the user's fingers;
a gyro sensor installed at the distal end of the user's index finger;
a communication module for communicating with an external device;
a memory storing one or more instructions; and
a processor executing the one or more instructions stored in the memory;
The processor determines an input signal for inputting a virtual QWERTY keyboard from the first sensing data obtained from the pressure sensor, and determines a position where the input signal is detected from the virtual QWERTY keyboard from the second sensing data obtained from the flex sensor and generating an output signal based on a result of determining the position of the input signal input from the index finger from the third sensing data obtained from the gyro sensor, and transmitting the output signal to an external device through the communication module. keyboard. The method of claim 1,
The processor is
It is determined whether the first sensed data is detected above a threshold,
The first sensing data detected above the threshold is determined as a first keyboard input, and the y-axis direction position of the first keyboard input is determined from the second sensing data that changes according to the degree of bending of the user's finger, and ,
determining an output value corresponding to the determined y-axis position of the first keyboard input;
A wearable keyboard, characterized in that it transmits the output value to an external device using the communication module. 3. The method of claim 2,
When the first keyboard input is input by the index finger, the position of the first keyboard input in the x-axis direction is additionally determined using third sensing data, and the x-axis position and the y-axis position of the first keyboard input are determined. Characterized in determining the output value corresponding to the position, wearable keyboard. The method of claim 1,
The processor is
Determining a threshold value of the first sensing data based on the user's profile,
When a pressure equal to or greater than the threshold value is sensed through the pressure sensor, at least one key corresponding to the pressure-detected finger is determined as a preliminary output value,
Based on the location information obtained from at least one of the second sensing data and the third sensing data, any one of the preliminary output values is determined as an output value, the wearable keyboard. The method of claim 1,
The processor is
mapping at least one preliminary output value to each of the ten pressure-sensitive sensors installed in the wearable keyboard;
When it is determined that the position of the input signal is not clear, at least one preliminary output value mapped to the pressure-sensitive sensor that obtained the input signal is transmitted to an external device,
The wearable keyboard, characterized in that the output signal is determined based on a user input for selecting any one of the at least one preliminary output value. The method of claim 1,
The processor is
The wearable keyboard, characterized in that the hysteresis parameter range is set to less than 20% in order to reduce the error rate of the user input signal recognized by at least one of the pressure sensor, the gyro sensor and the flex sensor. The method of claim 1,
The wearable keyboard is made of a polyamide resin composition,
The polyamide resin composition comprises:
15 to 25 wt% of an epoxy-based ester compound represented by Formula 1, which is prepared by reacting vegetable oil with alcohol;
20 to 25 wt% of at least one ester compound selected from the group consisting of a phthalate-based ester compound, a terephthalate-based ester compound, a phthalate-based and terephthalate-based ester mixture, and a trimellitate-based ester compound;
High density polyethylene (HDPE), low density polyethylene (LDPE), polypropylene (PP), ethylene-propylene copolymer (EPM), ethylene-propylene-diene copolymer (EPDM), ethylene-butene copolymer, ethylene-octene copolymer, 5 to 10% by weight of at least one olefinic rubber polymer selected from among ethylene-butadiene copolymers;
30 to 50 wt% of a polyamide having a relative viscosity (25°C) of 2.0 to 2.8 cP and a number average molecular weight of 20,000 to 200,000 g/mol;
A wearable keyboard comprising a polyamide resin composition comprising 5 to 15 wt% of a conjugated diene rubber, an aromatic vinyl compound and a vinyl aromatic compound including a vinyl cyan compound-vinyl cyan compound copolymer.
[Formula 1]

(wherein R4 is (C8-C20)epoxyalkyl, R5 is (C1-C10)alkyl or , wherein R _x and R _y are each independently hydrogen, (C1-C5)alkyl or , wherein the alkyl is (C1 -C5)alkyl or may be further substituted, wherein R ₄₁ and R ₄₂ are each independently (C8-C20)epoxyalkyl, and n is an integer selected from 1 to 3).

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