CN106357931B - Mobile terminal and input operation method - Google Patents
Mobile terminal and input operation method Download PDFInfo
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- CN106357931B CN106357931B CN201611020966.7A CN201611020966A CN106357931B CN 106357931 B CN106357931 B CN 106357931B CN 201611020966 A CN201611020966 A CN 201611020966A CN 106357931 B CN106357931 B CN 106357931B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72466—User interfaces specially adapted for cordless or mobile telephones with selection means, e.g. keys, having functions defined by the mode or the status of the device
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input 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
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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Abstract
The invention discloses a mobile terminal and an input operation method, wherein the method comprises the following steps: determining pressure distribution in a pressure key response area according to pressure values acquired by pressure sensors in the pressure key response area; according to the pressure distribution, carrying out the estimation of the pressing position; and determining a pressing threshold corresponding to the estimated pressing position, and identifying the pressure key according to the determined pressing threshold. According to the mobile terminal and the method, the pressing position of the user can be estimated according to the pressure value distribution condition in the pressure key response area, the pressing response threshold value of the pressure key is adjusted according to different pressing positions, the identification accuracy rate of the pressure key is ensured, and the false touch rate of the pressure key is reduced.
Description
Technical Field
The invention relates to the technical field of intelligent terminals, in particular to a mobile terminal and an input operation method.
Background
The side pressure key scheme is that a pressure key is used on a mobile terminal product to replace a solid key, so that similar or more functions are realized. The scheme of the side pressure keys can ensure normal use of a user, and further improves the aesthetic degree of the mobile terminal and reduces the process difficulty of the middle frame of the mobile phone.
At present, the pressure button scheme mainly carries out pressure acquisition through pressure sensor, when the pressing force degree obtains the settlement threshold value, carries out the button response. However, as the state of the art advances, the accuracy of the pressure sensor becomes higher and higher, and the error interference becomes smaller and smaller (< 0.1%), so that the pressure sensing device can detect very fine pressure value changes, which brings a problem while increasing the response sensitivity, namely: when a user strongly presses in the non-pressure key response area, the pressure key response area may also deform to achieve the effect of pressing the pressure key response area, thereby causing the problem of incorrect response of the pressure key. In order to solve this problem, if the pressing force threshold of the press key is simply increased, the pressing recognition rate of the press key by the user is decreased.
Disclosure of Invention
The invention mainly aims to provide a mobile terminal and an input operation method, and aims to solve the problem of misoperation of a pressure key caused by strong pressing on a non-pressure key in the prior art.
In order to achieve the above object, the present invention provides a mobile terminal, including:
the detection module is used for determining pressure distribution in the pressure key response area according to pressure values acquired by each pressure sensor in the pressure key response area;
the estimation module is used for estimating the pressing position according to the pressure distribution;
and the identification module is used for determining a pressing threshold corresponding to the estimated pressing position and identifying the pressure key according to the determined pressing threshold.
Optionally, the identification module is specifically configured to determine, if the estimated pressing position is in the pressure key response area, that a pressing threshold corresponding to the pressing position is a set standard pressing threshold; otherwise, determining the pressing threshold corresponding to the pressing position as a set first pressing threshold; the first compression threshold is greater than the standard compression threshold.
Optionally, the detection module is specifically configured to perform quadratic curve fitting on the pressure values acquired by the pressure sensors in the pressure key response area by using a least square method, so as to obtain pressure distribution in the pressure key response area.
Optionally, the estimating module is specifically configured to determine whether a vertex position of the fitted quadratic curve is within the pressure key response region, if so, estimate that the pressed position is within the pressure key response region, and otherwise, estimate that the pressed position is not within the pressure key response region.
Optionally, the estimating module is specifically configured to determine a pressure trend in the pressure key response region according to the fitted quadratic curve, and if the pressure trend is increasing or decreasing, estimate that the pressing position is not in the pressure key response region, otherwise, estimate that the pressing position is in the pressure key response region.
In order to achieve the above object, the present invention further provides an input operation method applied to a mobile terminal having a pressure button, the method including:
determining pressure distribution in a pressure key response area according to pressure values acquired by pressure sensors in the pressure key response area;
according to the pressure distribution, carrying out the estimation of the pressing position;
and determining a pressing threshold corresponding to the estimated pressing position, and identifying the pressure key according to the determined pressing threshold.
Optionally, the determining a pressing threshold corresponding to the estimated pressing position specifically includes:
if the estimated pressing position is in the pressure key response area, determining a pressing threshold corresponding to the pressing position as a set standard pressing threshold; otherwise, determining the pressing threshold corresponding to the pressing position as a set first pressing threshold; the first compression threshold is greater than the standard compression threshold.
Optionally, the determining the pressure distribution in the pressure key response area specifically includes:
and performing quadratic curve fitting on the pressure values acquired by the pressure sensors in the pressure key response area by adopting a least square method to obtain the pressure distribution in the pressure key response area.
Optionally, the estimating a pressing position according to the pressure distribution specifically includes:
and judging whether the vertex position of the fitted quadratic curve is in the pressure key response area, if so, estimating that the pressing position is in the pressure key response area, and otherwise, estimating that the pressing position is not in the pressure key response area.
Optionally, the estimating a pressing position according to the pressure distribution specifically includes:
and determining the pressure trend in the pressure key response area according to the fitted quadratic curve, if the pressure trend is increasing or decreasing, estimating that the pressing position is not in the pressure key response area, and otherwise, estimating that the pressing position is in the pressure key response area.
The invention has the following beneficial effects:
according to the mobile terminal and the method, the pressing position of the user can be estimated according to the pressure value distribution condition in the pressure key response area, the pressing response threshold value of the pressure key is adjusted according to different pressing positions, the identification accuracy rate of the pressure key is ensured, and the false touch rate of the pressure key is reduced.
Drawings
Fig. 1 is a schematic hardware configuration diagram of an alternative mobile terminal implementing various embodiments of the present invention;
FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;
fig. 3 is a block diagram of a mobile terminal according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a side pressure button and a pressure sensor of the mobile terminal according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a quadratic curve representing a pressure distribution rule according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another quadratic curve representing a pressure distribution law according to an embodiment of the present invention;
fig. 7 is a flowchart of an input operation method according to a second embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A mobile terminal implementing various embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The mobile terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like, and a stationary terminal such as a digital TV, a desktop computer, and the like. In the following, it is assumed that the terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the embodiment of the present invention can be applied to a fixed type terminal in addition to elements particularly used for moving purposes.
Fig. 1 is a schematic diagram of a hardware structure of an alternative mobile terminal for implementing various embodiments of the present invention.
The mobile terminal 100 may include a wireless communication unit 110, an a/V (audio/video) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, an interface unit 170, a controller 180, and a power supply unit 190, etc. Fig. 1 illustrates a mobile terminal having various components, but it is to be understood that not all illustrated components are required to be implemented. More or fewer components may alternatively be implemented. Elements of the mobile terminal will be described in detail below.
The wireless communication unit 110 typically includes one or more components that allow radio communication between the mobile terminal 100 and a wireless communication system or network. For example, the wireless communication unit may include at least one of a broadcast receiving module 111, a mobile communication module 112, a wireless internet module 113, a short-range communication module 114, and a location information module 115.
The broadcast receiving module 111 receives a broadcast signal and/or broadcast associated information from an external broadcast management server via a broadcast channel. The broadcast channel may include a satellite channel and/or a terrestrial channel. The broadcast management server may be a server that generates and transmits a broadcast signal and/or broadcast associated information or a server that receives a previously generated broadcast signal and/or broadcast associated information and transmits it to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and the like. Also, the broadcast signal may further include a broadcast signal combined with a TV or radio broadcast signal. The broadcast associated information may also be provided via a mobile communication network, and in this case, the broadcast associated information may be received by the mobile communication module 112. The broadcast signal may exist in various forms, for example, it may be in an Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB), digital videoA broadcast handheld (DVB-H) Electronic Service Guide (ESG) or the like. The broadcast receiving module 111 may receive a signal broadcast by using various types of broadcasting systems. In particular, the broadcast receiving module 111 may receive a broadcast signal by using a signal such as multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), digital video broadcasting-handheld (DVB-H), forward link media (MediaFLO)@) A digital broadcasting system of a terrestrial digital broadcasting integrated service (ISDB-T), etc. receives digital broadcasting. The broadcast receiving module 111 may be constructed to be suitable for various broadcasting systems that provide broadcast signals as well as the above-mentioned digital broadcasting systems. The broadcast signal and/or broadcast associated information received via the broadcast receiving module 111 may be stored in the memory 160 (or other type of storage medium).
The mobile communication module 112 transmits and/or receives radio signals to and/or from at least one of a base station (e.g., access point, node B, etc.), an external terminal, and a server. Such radio signals may include voice call signals, video call signals, or various types of data transmitted and/or received according to text and/or multimedia messages.
The wireless internet module 113 supports wireless internet access of the mobile terminal. The module may be internally or externally coupled to the terminal. The wireless internet access technology to which the module relates may include WLAN (wireless LAN) (Wi-Fi), Wibro (wireless broadband), Wimax (worldwide interoperability for microwave access), HSDPA (high speed downlink packet access), and the like.
The short-range communication module 114 is a module for supporting short-range communication. Some examples of short-range communication technologies include bluetoothTMRadio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), zigbeeTMAnd so on.
The location information module 115 is a module for checking or acquiring location information of the mobile terminal. A typical example of the location information module is a GPS (global positioning system). According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites and applies triangulation to the calculated information, thereby accurately calculating three-dimensional current location information according to longitude, latitude, and altitude. Currently, a method for calculating position and time information uses three satellites and corrects an error of the calculated position and time information by using another satellite. In addition, the GPS module 115 can calculate speed information by continuously calculating current position information in real time.
The a/V input unit 120 is used to receive an audio or video signal. The a/V input unit 120 may include a camera 121 and a microphone 122, and the camera 121 processes image data of still pictures or video obtained by an image capturing apparatus in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 151. The image frames processed by the cameras 121 may be stored in the memory 160 (or other storage medium) or transmitted via the wireless communication unit 110, and two or more cameras 121 may be provided according to the construction of the mobile terminal. The microphone 122 may receive sounds (audio data) via the microphone in a phone call mode, a recording mode, a voice recognition mode, or the like, and can process such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the mobile communication module 112 in case of a phone call mode. The microphone 122 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.
The user input unit 130 may generate key input data according to a command input by a user to control various operations of the mobile terminal. The user input unit 130 allows a user to input various types of information, and may include a keyboard, dome sheet, touch pad (e.g., a touch-sensitive member that detects changes in resistance, pressure, capacitance, and the like due to being touched), scroll wheel, joystick, and the like. In particular, when the touch pad is superimposed on the display unit 151 in the form of a layer, a touch screen may be formed.
The sensing unit 140 detects a current state of the mobile terminal 100 (e.g., an open or closed state of the mobile terminal 100), a position of the mobile terminal 100, presence or absence of contact (i.e., touch input) by a user with the mobile terminal 100, an orientation of the mobile terminal 100, acceleration or deceleration movement and direction of the mobile terminal 100, and the like, and generates a command or signal for controlling an operation of the mobile terminal 100. For example, when the mobile terminal 100 is implemented as a slide-type mobile phone, the sensing unit 140 may sense whether the slide-type phone is opened or closed. In addition, the sensing unit 140 can detect whether the power supply unit 190 supplies power or whether the interface unit 170 is coupled with an external device.
The interface unit 170 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The identification module may store various information for authenticating a user using the mobile terminal 100 and may include a User Identity Module (UIM), a Subscriber Identity Module (SIM), a Universal Subscriber Identity Module (USIM), and the like. In addition, a device having an identification module (hereinafter, referred to as an "identification device") may take the form of a smart card, and thus, the identification device may be connected with the mobile terminal 100 via a port or other connection means. The interface unit 170 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal and the external device.
In addition, when the mobile terminal 100 is connected with an external cradle, the interface unit 170 may serve as a path through which power is supplied from the cradle to the mobile terminal 100 or may serve as a path through which various command signals input from the cradle are transmitted to the mobile terminal. Various command signals or power input from the cradle may be used as signals for recognizing whether the mobile terminal is accurately mounted on the cradle. The output unit 150 is configured to provide output signals (e.g., audio signals, video signals, alarm signals, vibration signals, etc.) in a visual, audio, and/or tactile manner. The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and the like.
The display unit 151 may display information processed in the mobile terminal 100. For example, when the mobile terminal 100 is in a phone call mode, the display unit 151 may display a User Interface (UI) or a Graphical User Interface (GUI) related to a call or other communication (e.g., text messaging, multimedia file downloading, etc.). When the mobile terminal 100 is in a video call mode or an image capturing mode, the display unit 151 may display a captured image and/or a received image, a UI or GUI showing a video or an image and related functions, and the like.
Meanwhile, when the display unit 151 and the touch pad are overlapped with each other in the form of a layer to form a touch screen, the display unit 151 may serve as an input device and an output device. The display unit 151 may include at least one of a Liquid Crystal Display (LCD), a thin film transistor LCD (TFT-LCD), an Organic Light Emitting Diode (OLED) display, a flexible display, a three-dimensional (3D) display, and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a TOLED (transparent organic light emitting diode) display or the like. Depending on the particular desired implementation, the mobile terminal 100 may include two or more display units (or other display devices), for example, the mobile terminal may include an external display unit (not shown) and an internal display unit (not shown). The touch screen may be used to detect a touch input pressure as well as a touch input position and a touch input area.
The audio output module 152 may convert audio data received by the wireless communication unit 110 or stored in the memory 160 into an audio signal and output as sound when the mobile terminal is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output module 152 may provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output module 152 may include a speaker, a buzzer, and the like.
The alarm unit 153 may provide an output to notify the mobile terminal 100 of the occurrence of an event. Typical events may include call reception, message reception, key signal input, touch input, and the like. In addition to audio or video output, the alarm unit 153 may provide output in different ways to notify the occurrence of an event. For example, the alarm unit 153 may provide an output in the form of vibration, and when a call, a message, or some other incoming communication (incomingmunication) is received, the alarm unit 153 may provide a tactile output (i.e., vibration) to inform the user thereof. By providing such a tactile output, the user can recognize the occurrence of various events even when the user's mobile phone is in the user's pocket. The alarm unit 153 may also provide an output notifying the occurrence of an event via the display unit 151 or the audio output module 152.
The memory 160 may store software programs and the like for processing and controlling operations performed by the controller 180, or may temporarily store data (e.g., a phonebook, messages, still images, videos, and the like) that has been or will be output. Also, the memory 160 may store data regarding various ways of vibration and audio signals output when a touch is applied to the touch screen.
The memory 160 may include at least one type of storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, and the like. Also, the mobile terminal 100 may cooperate with a network storage device that performs a storage function of the memory 160 through a network connection.
The controller 180 generally controls the overall operation of the mobile terminal. For example, the controller 180 performs control and processing related to voice calls, data communications, video calls, and the like. In addition, the controller 180 may include a multimedia module 1810 for reproducing (or playing back) multimedia data, and the multimedia module 1810 may be constructed within the controller 180 or may be constructed separately from the controller 180. The controller 180 may perform a pattern recognition process to recognize a handwriting input or a picture drawing input performed on the touch screen as a character or an image.
The power supply unit 190 receives external power or internal power and provides appropriate power required to operate various elements and components under the control of the controller 180.
The various embodiments described herein may be implemented in a computer-readable medium using, for example, computer software, hardware, or any combination thereof. For a hardware implementation, the embodiments described herein may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, an electronic unit designed to perform the functions described herein, and in some cases, such embodiments may be implemented in the controller 180. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in the memory 160 and executed by the controller 180.
Up to this point, mobile terminals have been described in terms of their functionality. Hereinafter, a slide-type mobile terminal among various types of mobile terminals, such as a folder-type, bar-type, swing-type, slide-type mobile terminal, and the like, will be described as an example for the sake of brevity. Accordingly, the present invention can be applied to any type of mobile terminal, and is not limited to a slide type mobile terminal.
The mobile terminal 100 as shown in fig. 1 may be configured to operate with communication systems such as wired and wireless communication systems and satellite-based communication systems that transmit data via frames or packets.
A communication system in which a mobile terminal according to the present invention is operable will now be described with reference to fig. 2.
Such communication systems may use different air interfaces and/or physical layers. For example, the air interface used by the communication system includes, for example, Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS) (in particular, Long Term Evolution (LTE)), global system for mobile communications (GSM), and the like. By way of non-limiting example, the following description relates to a CDMA communication system, but such teachings are equally applicable to other types of systems.
Referring to fig. 2, the CDMA wireless communication system may include a plurality of mobile terminals 100, a plurality of Base Stations (BSs) 270, Base Station Controllers (BSCs) 275, and a Mobile Switching Center (MSC) 280. The MSC280 is configured to interface with a Public Switched Telephone Network (PSTN) 290. The MSC280 is also configured to interface with a BSC275, which may be coupled to the base station 270 via a backhaul. The backhaul may be constructed according to any of several known interfaces including, for example, E1/T1, ATM, IP, PPP, frame Relay, HDSL, ADSL, or xDSL. It will be understood that a system as shown in fig. 2 may include multiple BSCs 2750.
Each BS270 may serve one or more sectors (or regions), each sector covered by a multi-directional antenna or an antenna pointing in a particular direction being radially distant from the BS 270. Alternatively, each partition may be covered by two or more antennas for diversity reception. Each BS270 may be configured to support multiple frequency allocations, with each frequency allocation having a particular frequency spectrum (e.g., 1.25MHz,5MHz, etc.).
The intersection of partitions with frequency allocations may be referred to as a CDMA channel. The BS270 may also be referred to as a Base Transceiver Subsystem (BTS) or other equivalent terminology. In such a case, the term "base station" may be used to generically refer to a single BSC275 and at least one BS 270. The base stations may also be referred to as "cells". Alternatively, each sector of a particular BS270 may be referred to as a plurality of cell sites.
As shown in fig. 2, a Broadcast Transmitter (BT)295 transmits a broadcast signal to the mobile terminal 100 operating within the system. A broadcast receiving module 111 as shown in fig. 1 is provided at the mobile terminal 100 to receive a broadcast signal transmitted by the BT 295. In fig. 2, several Global Positioning System (GPS) satellites 300 are shown. The satellite 300 assists in locating at least one of the plurality of mobile terminals 100.
In fig. 2, a plurality of satellites 300 are depicted, but it is understood that useful positioning information may be obtained with any number of satellites. The GPS module 115 as shown in fig. 1 is generally configured to cooperate with satellites 300 to obtain desired positioning information. Other techniques that can track the location of the mobile terminal may be used instead of or in addition to GPS tracking techniques. In addition, at least one GPS satellite 300 may selectively or additionally process satellite DMB transmission.
As a typical operation of the wireless communication system, the BS270 receives reverse link signals from various mobile terminals 100. The mobile terminal 100 is generally engaged in conversations, messaging, and other types of communications. Each reverse link signal received by a particular base station 270 is processed within the particular BS 270. The obtained data is forwarded to the associated BSC 275. The BSC provides call resource allocation and mobility management functions including coordination of soft handoff procedures between BSs 270. The BSCs 275 also route the received data to the MSC280, which provides additional routing services for interfacing with the PSTN 290. Similarly, the PSTN290 interfaces with the MSC280, the MSC interfaces with the BSCs 275, and the BSCs 275 accordingly control the BS270 to transmit forward link signals to the mobile terminal 100.
Based on the above-described mobile terminal hardware structure and communication system, various embodiments of the present invention are proposed.
A first embodiment of the present invention provides a mobile terminal, where the mobile terminal is provided with a pressure button, and the pressure button may be, but is not limited to, a side pressure button. As shown in fig. 3, the mobile terminal according to this embodiment includes: a detection module 310, an estimation module 320, and an identification module 330. When the hardware structure of the mobile terminal is the hardware structure shown in fig. 1, the detecting module 310, the estimating module 320, and the identifying module 330 may be functional components of the controller 180 in fig. 1, or may be functional modules independent of the controller 180.
Specifically, in the embodiment of the present invention:
the detection module 310 is configured to determine pressure distribution in a pressure key response area according to pressure values acquired by pressure sensors in the pressure key response area;
an estimation module 320, configured to perform compression position estimation according to the pressure distribution;
the identifying module 330 is configured to determine a pressing threshold corresponding to the estimated pressing position, and perform pressure key identification according to the determined pressing threshold.
In the embodiment of the invention, K pressure sensors P (1) … … P (i) … … P (K) are arranged in the pressure key response area, wherein K is greater than or equal to 3. The K pressure sensor deployment positions uniformly cover the pressure key response area.
As shown in fig. 4, which is a schematic diagram of the disposition positions of the pressure sensors in the pressure key response area when the pressure key is a side pressure key, it can be known that, when disposing the pressure sensors, P (1) and P (K) are disposed on two sides of the key response area, respectively, and the remaining pressure sensors are disposed uniformly between P (1) and P (K).
In an embodiment of the present invention, the detecting module 310 performs quadratic curve fitting on the pressure values collected by the pressure sensors in the pressure key response area by using a least square method, so as to obtain the pressure distribution in the pressure key response area.
Specifically, for example, the pressure key is taken as a side pressure key, the ordinate positions of the pressure sensors on the side frame are X (1), X (2) … … X (K), and the abscissa is zero, X (1) may be set to 0, and X (i) may represent the absolute distance from X (1). Quadratic curve fitting is carried out on { (X (1), P (1)), (X (2), P (2)), … … (X (K), P (K)) } data by a least square method (a curve function is fitted to be f (X) ═ a X } X2+ b X + c) to obtain the pressure distribution in the pressure button response area.
According to the principle that the deformation amount of an object changes less (i.e., the pressure value detected by a pressure sensor is smaller) the farther from a pressing position, quadratic curves (i.e., pressure distribution) obtained by fitting are mainly classified into two types:
one type is shown in fig. 5, where the maximum pressure occurs at the non-outermost two pressure sensor locations and the minimum occurs at one of the outermost two pressure sensor locations, where it can be determined that the user pressed location is within the side pressure key response zone.
And the other is shown in fig. 6, namely, the maximum pressure value appears in one of the two pressure sensor positions at the two sides, and the minimum value appears in the other one of the two outermost pressure sensor positions, when the user pressing position is determined to be outside the side pressure key response area.
Furthermore, in this embodiment, the manner of estimating the pressing position by the estimation module 320 according to the pressure distribution includes:
the first method is as follows: and judging whether the vertex position of the fitted quadratic curve is in the pressure key response area, if so, estimating that the pressing position is in the pressure key response area, and otherwise, estimating that the pressing position is not in the pressure key response area.
The mathematical discrimination method in the specific estimation is as follows: obtaining a vertex value-b/(2 a) of the curve according to the fitted curve function, and when X (1) is less than or equal to-b/(2 a) is less than or equal to X (K), judging that the vertex value is in the pressure key response area, and obtaining an estimation result of the pressed position in the pressure key response area;
and when-b/(2 a) > X (K) or-b/(2 a) < X (1), judging that the vertex value is not in the pressure key response area, and obtaining an estimation result that the pressing position is not in the pressure key response area.
The second method comprises the following steps: and determining the pressure trend in the pressure key response area according to the fitted quadratic curve, if the pressure trend is increasing or decreasing, estimating that the pressing position is not in the pressure key response area, and otherwise, estimating that the pressing position is in the pressure key response area.
The mathematical discrimination method in the specific estimation is as follows: when f ' (X (1)). times.f ' (X (K)). gtoreq.0, wherein f ' represents the derivation of a function, and the function is judged to be an increasing or decreasing function all the time, an estimation result that the pressed position is not in the pressure key response area is obtained; and when f '(X (1)). f' (X (K)) <0, judging that the function is an increasing function and a decreasing function, and obtaining an estimation result of the pressed position in the pressure key response area.
Further, in the embodiment of the present invention, if the estimated pressing position is in the pressure key response area, the identification module 330 determines that the pressing threshold corresponding to the pressing position is a set standard pressing threshold; if the estimated pressing position is not in the pressure key response area, the identification module 330 determines that the pressing threshold corresponding to the pressing position is a set first pressing threshold; the first pressing threshold is greater than the standard pressing threshold, and more specifically, the first pressing threshold is far greater than the standard pressing threshold, so that the pressing response sensitivity of a user is guaranteed, and meanwhile, the mistaken touch can be reduced as far as possible.
In summary, according to the embodiment of the present invention, the pressing position of the user can be estimated according to the pressure value distribution in the pressure key response area, and the pressing response threshold of the pressure key is adjusted according to different pressing positions, so that the identification accuracy of the pressure key is ensured, and the false touch rate of the pressure key is reduced.
In a second embodiment of the present invention, an input operation method is provided, which is applied to a mobile terminal having a pressure key, as shown in fig. 7, and includes:
step S701, determining pressure distribution in a pressure key response area according to pressure values acquired by pressure sensors in the pressure key response area;
in an embodiment of the present invention, determining the pressure distribution in the pressure key response area specifically includes:
and performing quadratic curve fitting on the pressure values acquired by the pressure sensors in the pressure key response area by adopting a least square method to obtain the pressure distribution in the pressure key response area.
Step S702, estimating the pressing position according to the pressure distribution;
in an embodiment of the present invention, the method for estimating a pressing position according to the pressure distribution specifically includes:
the first method is as follows: and judging whether the vertex position of the fitted quadratic curve is in the pressure key response area, if so, estimating that the pressing position is in the pressure key response area, and otherwise, estimating that the pressing position is not in the pressure key response area.
The second method comprises the following steps: and determining the pressure trend in the pressure key response area according to the fitted quadratic curve, if the pressure trend is increasing or decreasing, estimating that the pressing position is not in the pressure key response area, and otherwise, estimating that the pressing position is in the pressure key response area.
Step S703 is to determine a pressing threshold corresponding to the estimated pressing position, and perform pressure key identification according to the determined pressing threshold.
In an embodiment of the present invention, determining a compression threshold corresponding to the estimated compression position includes:
if the estimated pressing position is in the pressure key response area, determining a pressing threshold corresponding to the pressing position as a set standard pressing threshold; otherwise, determining the pressing threshold corresponding to the pressing position as a set first pressing threshold; the first compression threshold is greater than the standard compression threshold.
In summary, according to the embodiment of the present invention, the pressing position of the user can be estimated according to the pressure value distribution in the pressure key response area, and the pressing response threshold of the pressure key is adjusted according to different pressing positions, so that the identification accuracy of the pressure key is ensured, and the false touch rate of the pressure key is reduced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A mobile terminal, comprising:
the detection module is used for determining pressure distribution in the pressure key response area according to pressure values acquired by each pressure sensor in the pressure key response area;
the estimation module is used for estimating the pressing position according to the pressure distribution;
the identification module is used for determining a pressing threshold corresponding to the estimated pressing position and identifying the pressure key according to the determined pressing threshold;
the detection module is specifically used for performing quadratic curve fitting on the pressure values acquired by the pressure sensors in the pressure key response area to obtain pressure distribution in the pressure key response area;
the identification module is specifically configured to determine, if the estimated pressing position is in the pressure key response area, that a pressing threshold corresponding to the pressing position is a set standard pressing threshold; otherwise, determining the pressing threshold corresponding to the pressing position as a set first pressing threshold; the first compression threshold is greater than the standard compression threshold.
2. The mobile terminal of claim 1, wherein the detection module is specifically configured to perform quadratic curve fitting on the pressure values collected by the pressure sensors in the pressure key response area by using a least square method.
3. The mobile terminal of claim 2, wherein the estimating module is specifically configured to determine whether a vertex position of the fitted quadratic curve is within the pressure key response region, if so, estimate that a pressed position is within the pressure key response region, otherwise, estimate that the pressed position is not within the pressure key response region.
4. The mobile terminal of claim 2, wherein the estimating module is specifically configured to determine a pressure trend in the pressure key response area according to the fitted quadratic curve, and if the pressure trend is increasing or decreasing, it is estimated that the pressed position is not in the pressure key response area, otherwise, it is estimated that the pressed position is in the pressure key response area.
5. An input operation method is applied to a mobile terminal with a pressure key, and is characterized by comprising the following steps:
determining pressure distribution in a pressure key response area according to pressure values acquired by pressure sensors in the pressure key response area;
according to the pressure distribution, carrying out the estimation of the pressing position;
determining a pressing threshold corresponding to the estimated pressing position, and identifying the pressure key according to the determined pressing threshold;
the determining the pressure distribution in the pressure key response area specifically includes: performing quadratic curve fitting on pressure values acquired by each pressure sensor in the pressure key response area to obtain pressure distribution in the pressure key response area;
the determining of the pressing threshold corresponding to the estimated pressing position specifically includes:
if the estimated pressing position is in the pressure key response area, determining a pressing threshold corresponding to the pressing position as a set standard pressing threshold; otherwise, determining the pressing threshold corresponding to the pressing position as a set first pressing threshold; the first compression threshold is greater than the standard compression threshold.
6. The method of claim 5, wherein the determining the pressure distribution within the pressure key response region further comprises:
and performing quadratic curve fitting on the pressure values acquired by the pressure sensors in the pressure key response area by adopting a least square method.
7. The method according to claim 6, wherein the performing a compression location estimation based on the pressure profile specifically comprises:
and judging whether the vertex position of the fitted quadratic curve is in the pressure key response area, if so, estimating that the pressing position is in the pressure key response area, and otherwise, estimating that the pressing position is not in the pressure key response area.
8. The method according to claim 6, wherein the performing a compression location estimation based on the pressure profile specifically comprises:
and determining the pressure trend in the pressure key response area according to the fitted quadratic curve, if the pressure trend is increasing or decreasing, estimating that the pressing position is not in the pressure key response area, and otherwise, estimating that the pressing position is in the pressure key response area.
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| CN111176387A (en) * | 2020-02-28 | 2020-05-19 | 芯海科技（深圳）股份有限公司 | Mobile terminal shell, mobile terminal, pressure touch method and storage medium |
| CN111629098B (en) * | 2020-05-25 | 2021-05-25 | 芯海科技（深圳）股份有限公司 | Shell, terminal, pressure detection method, equipment and storage medium |
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| CN101398727A (en) * | 2007-09-30 | 2009-04-01 | 宏达国际电子股份有限公司 | Method for judging pressed position of touch screen |
| CN104579285A (en) * | 2013-10-25 | 2015-04-29 | 富泰华工业（深圳）有限公司 | Pressure-sensitive button and electronic device with same |
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