KR101566148B1 - Touch Pad Capable of Setting Various Security Key using Piezo Effect - Google Patents

Touch Pad Capable of Setting Various Security Key using Piezo Effect Download PDF

Info

Publication number
KR101566148B1
KR101566148B1 KR1020150048242A KR20150048242A KR101566148B1 KR 101566148 B1 KR101566148 B1 KR 101566148B1 KR 1020150048242 A KR1020150048242 A KR 1020150048242A KR 20150048242 A KR20150048242 A KR 20150048242A KR 101566148 B1 KR101566148 B1 KR 101566148B1
Authority
KR
South Korea
Prior art keywords
touch
key
touch pad
user
input
Prior art date
Application number
KR1020150048242A
Other languages
Korean (ko)
Inventor
김수호
홍성욱
Original Assignee
주식회사 우정하이텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 우정하이텍 filed Critical 주식회사 우정하이텍
Priority to KR1020150048242A priority Critical patent/KR101566148B1/en
Priority claimed from US14/810,570 external-priority patent/US9569007B2/en
Application granted granted Critical
Publication of KR101566148B1 publication Critical patent/KR101566148B1/en
Priority claimed from EP15198527.2A external-priority patent/EP3043474B1/en

Links

Images

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/82Protecting input, output or interconnection devices
    • G06F21/83Protecting input, output or interconnection devices input devices, e.g. keyboards, mice or controllers thereof

Abstract

The present invention relates to a touch pad, and more particularly, to a touch pad capable of accurately recognizing various touch patterns such as a long key and a multi key by a user while using a piezo film, The present invention relates to a touch pad capable of setting various security keys using a piezo effect which can remarkably improve the performance.
To this end, the present invention provides a touch pad comprising a touch key; A piezo film disposed on a bottom surface of the touch pad and emitting ultrasonic waves; A memory for storing a security key of a user input through the touch pad; And a controller for analyzing the displacement of the piezoelectric film and the ultrasonic impedance reflected by the touch object contacting the surface of the touch pad and the touch object to recognize the touch by the user and managing the security key, The control unit recognizes the touch key input by the user and then recognizes the returned touch key as the long key input by the user after the change of the ultrasonic impedance of the touch key is maintained for a predetermined time or longer It provides a touch pad that can set various security keys using the characteristic piezo effect.

Description

[0001] The present invention relates to a touch pad capable of setting various security keys using a piezo effect,

The present invention relates to a touch pad, and more particularly, to a touch pad capable of accurately recognizing various touch patterns such as a long key and a multi key by a user while using a piezo film, The present invention relates to a touch pad capable of setting various security keys using a piezo effect which can remarkably improve the performance.

As a touch using a piezo effect of the related art, in order to solve a problem of a touch screen having a transparent electrode, a plurality of piezoelectric elements are provided along a bezel region of a transparent substrate, A touch panel using a piezoelectric element capable of sensing a potential position of a piezoelectric element according to an applied pressure and detecting the touch position has been developed (refer to Korean Patent No. 1329340).

In addition, in order to realize a touch panel using a piezoelectric polymer film as a touch using a piezo effect of the prior art, which is simple in structure and excellent in permeability and capable of recognizing the position of the input and the intensity of the input signal, A touch panel has been developed which recognizes a potential difference generated by a pressure through a transparent electrode using a piezoelectric substrate formed of a film (refer to Korean Patent No. 0980447).

Meanwhile, the present applicant has proposed a method of filtering an artificial touch error due to external impact, vibration, or foreign matter such as water or ketchup while using a piezo film, and accurately detecting the touch by the user even if the thickness of the metal plate is thick or the interval between the touch keys is narrow A metal plate touch device capable of accurately and stably recognizing a touch using a recognizable piezo effect has been developed (refer to Korean Patent Application No. 10-2014-0184304).

However, the touch devices using the piezo effect of the prior art can not be immediately applied to the metal or new material without any additional process, or even if the touch object is touch-input to a metal plate provided with a touch key, The input of the long key (the key input state is maintained for a certain period of time) and the multi key input Can not be recognized safely.

Therefore, when a touch device using a piezo effect is applied to a metal plate or the like, it is difficult for a user to set a security such as a password that can be set by a user due to limitations of long key input and multi key input recognition. There is a problem that the type of security key is very limited and it is difficult to expect a high level of security realistically.

Korean Patent No. 1329340 (Nov. 31, 2013) Korean Patent No. 0980447 (Aug. 31, 2010) Korean Patent Application No. 10-2014-0184304 (December 19, 2014)

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a touch screen device, It is possible to modify various key values according to not only the position but also the pressing pattern by combining the long key input and the multi key input, The present invention provides a touch pad capable of setting various secret keys using a piezo effect that can set a secret key of a user and can greatly improve a security level.

According to an aspect of the present invention, there is provided a touch pad including a touch key, A piezo film disposed on a bottom surface of the touch pad and emitting ultrasonic waves; A memory for storing a security key of a user input through the touch pad; And a controller for analyzing the displacement of the piezoelectric film and the ultrasonic impedance reflected by the touch object contacting the surface of the touch pad and the touch object to recognize the touch by the user and managing the security key, The control unit recognizes the touch key input by the user and then recognizes the returned touch key as the long key input by the user after the change of the ultrasonic impedance of the touch key is maintained for a predetermined time or longer .

Here, the security key includes a multi-key input by the user, and the control unit recognizes the touch input of a touch key by the user, and then, when another touch key is input while the change of the ultrasonic impedance of the corresponding touch key is maintained And recognizes it as a multi-key input by the user.

Preferably, the security key is a combination of a long key input by a user and a multi-key input.

In addition, the security key may include a knock key input for switching the touch pad to an input waiting state.

According to another embodiment of the present invention, the touch pad is included in a door lock which is integrally formed with a door as a metal plate material.

Since the touch pad capable of setting various security keys using the piezo effect of the present invention configured as above can stably recognize various touch patterns such as a long key and a multi key by a user even in a material such as a metal plate, long key input and multi key input, it can be transformed into various key values according to the position and pressing pattern, so that it is possible to set up my own security key that does not overlap with others, and the security level can be significantly improved Useful effect.

FIG. 1 is a sectional view of a touch pad capable of setting various security keys using a piezo effect according to an embodiment of the present invention; FIG.
2 is a diagram illustrating output values according to a touch key input of a touch pad capable of setting various security keys using a piezo effect according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

FIG. 1 is a cross-sectional view illustrating a touch pad capable of setting various security keys using a piezo effect according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a touch pad capable of setting various security keys using a piezo effect according to an embodiment of the present invention. And the output value according to the touch key input of the pad.

As shown in FIGS. 1 and 2, the touch pad 100 includes a touch pad 100, a piezo film 200, a memory (not shown), and a control unit (not shown) (Not shown).

The touch pad 100 includes a plurality of touch keys K1, K2, and K3. The touch pad 100 may be formed of a metal plate or other new material, but general touch panel materials such as glass can be widely used. have.

A Piezo Film 200 emits an ultrasonic pulse to the surface of the touch pad 100 by inputting an electric signal to the piezoelectric film disposed on the bottom surface of the touch pad 100.

The piezoelectric film 200 is a film capable of changing the mechanical energy and electric energy applied thereto. When the piezoelectric film 200 receives a physical force from the outside, the piezoelectric film 200 generates electrical energy. On the contrary, the piezoelectric film 200 undergoes physical deformation .

The ultrasonic pulse emitted by the piezo film 200 moves to the surface of the touch pad 100 and then a part of the ultrasonic pulse is reflected downward again. At this time, the surface of the touch pad 100 and any touch object ) Of the ultrasonic waves.

The piezoelectric film 200 refers to a portion including a piezoelectric film (Piezo Film Part), which is not simply a film but is electrically connected to a flexible printed circuit board (FPCB) to transmit ultrasonic waves (Not shown in the drawings) and the like.

In addition, the piezoelectric film 200 is preferably formed in the form of a thin film, but is not limited thereto. The piezoelectric film 200 is a concept including a ceramic or the like having a certain thickness capable of exhibiting a piezoelectric effect.

In addition, a base plate 300 may be used to support the touch pad 100 and the piezo film 200 in the lower part of the present invention. When the user touches the touch pad 100, And a flexure space 310 in which the piezo film 200 can be moved downward.

A memory (not shown) stores a security key of a user input through the touch pad 100. The security key includes a location and order of a touch key input by a user, various key patterns A long key input, a multi key input, etc.) and a combination thereof.

The security key may be a key for switching from a knock or wake up or unlock operation for switching a touch pad of a smart device such as a smart phone into an input standby state, user authentication, and the like.

A control section (not shown in the drawing) is formed by a displacement V of the piezo film 200 and a touch object such as a finger or a touch pen touching the surface and the surface of the touch pad 100 Analyzes the reflected ultrasonic impedance, recognizes the touch by the user, and manages the security key.

Here, the control unit receives the security key by the user, registers it in advance, compares the key value input by the user with the security key stored in the memory, and determines whether the user is authorized according to the result.

The controller recognizes the accurate and stable touch by the user and senses the displacement of the piezo film 200 to filter the touch error (hereinafter, the Piezoelectric Mode Detector is referred to as a "piezo type" (Hereinafter referred to as an "ultrasonic mode detector" is referred to as an "impedance type"). In addition, an ultrasonic wave reflected by various touch objects is analyzed (hereinafter referred to as an "ultrasonic mode detector"

At this time, a separate ultrasonic receiver (not shown) such as a hydrophone array for detecting ultrasonic waves reflected from a touch object touching the surface of the touch pad 100 and a surface of the touch pad 100 by the impedance type Lt; / RTI >

For reference, the long key input described below means that the input state of the corresponding key is maintained (continued) for a predetermined time or longer after the touch key input by the user, and the multi key input is performed by the user Means that at least two touch keys are simultaneously input (simultaneous input state is maintained).

Herein, a multi-key input is a function for inputting the other key (s) (long key and multi key (s)) in a long key or multi key input state of any touch key multi key) input is performed.

If the touch pad 100 is a thick metal plate or the like and the user slowly detouches the touch object from the touch key when the touch is recognized by the piezo type, the piezo film for determining the long key (-V) output value of the piezoelectric element 200 does not come out properly (see the output value in the piezo type shown in FIG. 2).

Therefore, in order to solve the problem of recognizing the long type input of such a piezo type, the control unit recognizes the input of the touch key by the user and then determines whether the change of the ultrasonic impedance of the corresponding touch key inputted in consideration of the impedance type is long the touch key may be recognized as a long key input by the user after the touch key is held for a predetermined time or longer to be regarded as a key, and then the touch key is returned from the original impedance value to the set impedance value (See output value in the impedance type shown in Fig. 2).

That is, as can be seen from the output values identified at the respective read points A, B, C, D, E and F in FIG. 2, (A: p-off, i-on, B, C, and D: p-off, i-on, E, and F) can be accurately recognized by recognizing the impedance type. : p-off, i-off (p: piezo output, i: impedance output).

Herein, the control unit recognizes a certain touch key as an input of a touch by a user, and then selects a different touch from the state in which the change in the ultrasonic impedance of the corresponding touch key input is maintained in consideration of the impedance type When the key is input, it can be configured to be recognized as a multi-key input (multi key) by the user.

The touch pad capable of setting various security keys using the piezo effect of the present invention configured as described above can be used as a long key by a user by using a piezo type and an impedance type touch recognition process in parallel, And a multi-key touch input.

In other words, a piezo type is mainly used to recognize a touch input, and an impedance type is used to recognize the release of a touch. Even when a touch input is recognized, a disadvantage of a piezo type It goes without saying that an impedance type may be used for supplement or alone.

By this double-touch recognition, when a metal plate or a new material is applied to the touch pad in the case of the piezo type, the inverse displacement value of the piezo film 200 when the user slowly detaches the touch object from the touch key (-V) power problem.

Accordingly, it is possible to accurately determine which input state of the touch key is maintained (sustained) and at which time the input is canceled by the impedance type, so that the long key input of the touch key is judged You can.

In addition, since the state in which the key input of any touch key is held can be recognized as an impedance type, simultaneous input (hold) of various touch keys (two or more) can be easily recognized in a multi key Of course.

Meanwhile, in another embodiment of the present invention, the touch pad 100 is made of a metal plate material, and is incorporated into a door lock which is integrally formed with a door made of a metal material. Then, after entering a knock key, The door and the door lock part can be divided (key input ready) by the door and the door can be applied to various real-life security products.

Therefore, the touch pad according to the present invention basically compensates for the problem of detecting the touch release time (long-key recognition) when the metal material or other new material is applied to the touch pad as a piezo type by using an impedance type It is possible to accurately recognize the long key input and the multi key input, thereby diversifying the security key according to the user and achieving a high level of security level.

In other words, while applying the piezo type to the touch pad, it can be transformed into various key values depending on the position as well as the position by using a combination of the long key input and the multi key input as in the touch screen Therefore, it is possible to set up my own security key that does not overlap with others, and the security level can be significantly improved.

Therefore, the present invention is widely applied to touch security technologies in various industrial fields, such as knock keys, unlocks, user touch menus in smart banking, digital door locks of various smart devices such as smart phones, .

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100 ... touch pad 200 ... piezo film
300 ... base plate 310 ... bending space
320 ... Spacers K1, K2, K3 ... Touch key

Claims (5)

  1. A touch pad provided with a touch key;
    A piezo film disposed on a bottom surface of the touch pad and emitting ultrasonic waves;
    A memory for storing a security key of a user input through the touch pad; And
    And a controller for analyzing the displacement of the piezoelectric film and the ultrasonic impedance reflected by the touch object contacting the surface of the touch pad and the touch object to recognize the touch by the user and managing the security key,
    The control key includes a long key input by the user, and the control unit recognizes the input of the touch by the user. After the change of the ultrasonic impedance of the corresponding touch key is maintained for a predetermined time or longer, The touch pad is capable of setting various security keys using the piezo effect.
  2. The method according to claim 1,
    When the touch key is recognized as a touch input of a touch key by the user and then the change of the ultrasonic impedance of the touch key is maintained, And the keypad is configured to recognize various keys as a multi-key input.
  3. 3. The method of claim 2,
    Wherein the security key comprises a combination of a long key input and a multi-key input by a user.
  4. The method of claim 3,
    Wherein the security key includes a knock key input for switching the touch pad to an input standby state.
  5. The method according to claim 3 or 4,
    Wherein the touch pad is included in a door lock which is integrally formed with the door using a metal plate material.
KR1020150048242A 2015-04-06 2015-04-06 Touch Pad Capable of Setting Various Security Key using Piezo Effect KR101566148B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150048242A KR101566148B1 (en) 2015-04-06 2015-04-06 Touch Pad Capable of Setting Various Security Key using Piezo Effect

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR1020150048242A KR101566148B1 (en) 2015-04-06 2015-04-06 Touch Pad Capable of Setting Various Security Key using Piezo Effect
US14/810,570 US9569007B2 (en) 2014-12-19 2015-07-28 Touch pad using piezo effect
CN201510459652.6A CN105718101A (en) 2014-12-19 2015-07-30 Touch pad using piezo effect
EP15198527.2A EP3043474B1 (en) 2014-12-19 2015-12-08 Touch pad using piezo effect
JP2015240147A JP6068609B2 (en) 2014-12-19 2015-12-09 Touchpad using piezo effect

Publications (1)

Publication Number Publication Date
KR101566148B1 true KR101566148B1 (en) 2015-11-05

Family

ID=54600707

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150048242A KR101566148B1 (en) 2015-04-06 2015-04-06 Touch Pad Capable of Setting Various Security Key using Piezo Effect

Country Status (1)

Country Link
KR (1) KR101566148B1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673041A (en) 1994-03-30 1997-09-30 Chatigny; Joseph Victor Reflective mode ultrasonic touch sensitive switch
US20090002199A1 (en) 2007-06-28 2009-01-01 Nokia Corporation Piezoelectric sensing as user input means
JP2014182568A (en) 2013-03-19 2014-09-29 Denso Wave Inc Input device for password key for entering and leaving

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673041A (en) 1994-03-30 1997-09-30 Chatigny; Joseph Victor Reflective mode ultrasonic touch sensitive switch
US20090002199A1 (en) 2007-06-28 2009-01-01 Nokia Corporation Piezoelectric sensing as user input means
JP2014182568A (en) 2013-03-19 2014-09-29 Denso Wave Inc Input device for password key for entering and leaving

Similar Documents

Publication Publication Date Title
KR101642621B1 (en) Touch-sensitive button with two levels
EP1607852B1 (en) Object position detector with edge motion feature and gesture recognition
US9965107B2 (en) Authenticating with active stylus
JP5612218B2 (en) Combination touch, handwriting and fingerprint sensor
KR101006877B1 (en) Transparent digitizer
DE202012101769U1 (en) Touch sensor with pulse or frame based communication using an active stylus
US7784366B2 (en) Single sided capacitive force sensor for electronic devices
CN103294300B (en) Sensor management apparatus, method, and computer program product
KR20140134281A (en) Pressure sensitive keys
US20090167719A1 (en) Gesture commands performed in proximity but without making physical contact with a touchpad
KR101180218B1 (en) Hand-held Device with Touchscreen and Digital Tactile Pixels
KR20110111192A (en) Method and apparatus for implementing electrode patterns in touch panel
KR101993503B1 (en) Printed piezoelectric pressure sensing foil
KR20160108390A (en) Ultrasonic imaging with acoustic resonant cavity
US8441790B2 (en) Electronic device housing as acoustic input device
JP6280867B2 (en) Method and apparatus for classifying touch events on a touch sensor surface
CN101727233B (en) Electronic apparatus and touch control method thereof
KR100480823B1 (en) touch panel for display device
JP6243828B2 (en) Feedback method according to touch level and touch input device performing the same
JP6024903B2 (en) Input device, input control method, program, and electronic device
US8988396B2 (en) Piezo-based acoustic and capacitive detection
KR20110020048A (en) Touch feedback panel, touch screen device and electronic device including the same
KR20140113420A (en) Contactor-based haptic feedback generation
KR101489813B1 (en) Touch panel including Active stylus pen and controlling method thereof
US8624839B2 (en) Support-surface apparatus to impart tactile feedback

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20181029

Year of fee payment: 4

FPAY Annual fee payment

Payment date: 20191029

Year of fee payment: 5