CN112684916A - Information input method and device and electronic equipment - Google Patents
Information input method and device and electronic equipment Download PDFInfo
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Abstract
The application discloses an information input method and device and electronic equipment. The method comprises the following steps: transmitting a first signal to a preset operation area through an antenna at intervals of preset time, wherein the preset operation area is a space area outside the electronic equipment; receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area; determining a first input position of the operation body for performing a first input operation based on the first signal and the second signal; and determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is the corresponding relation between the input position and the input information. The method can improve the accuracy of information input.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to an information input method and device and electronic equipment.
Background
With the development of communication and software technologies, electronic devices are becoming more powerful, and electronic devices have evolved from merely meeting the basic communication needs of people to being adjusted according to the personal needs of people, and are more personalized.
Along with the penetration of electronic devices into people's lives, the need of electronic devices for air-isolated input has also emerged due to the inconvenience of carrying conventional keyboard input devices, for example, employees of enterprises edit office documents while on business trips on high-speed rails or airplanes.
At present, the air-isolated input mode is mainly affected by the intensity of the illumination environment through an optical projection keyboard, and the accuracy of information input is poorer.
Disclosure of Invention
The embodiment of the application aims to provide an information input method, an information input device and electronic equipment, and the problem that in the prior art, the accuracy of information input in an air space is poor due to the influence of the intensity of an illumination environment is solved.
In a first aspect, an embodiment of the present application provides an information input method, which is applied to an electronic device, and includes:
transmitting a first signal to a preset operation area through an antenna at intervals of preset time, wherein the preset operation area is a space area outside the electronic equipment;
receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area;
determining a first input position of the operation body for performing a first input operation based on the first signal and the second signal;
and determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is the corresponding relation between the input position and the input information.
In a second aspect, an embodiment of the present application provides an information input device, which is applied to an electronic device, and includes:
the transmitting module is used for transmitting a first signal to a preset operation area through an antenna at intervals of preset time, wherein the preset operation area is a space area outside the electronic equipment;
the receiving module is used for receiving a second signal after the first signal is reflected by an operation body in the preset operation area;
the first determination module is used for determining a first input position of the operation body for performing first input operation based on the first signal and the second signal;
and the second determining module is used for determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is a corresponding relation between the input position and the input information.
In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the method according to the first aspect.
In a fifth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect.
In the embodiment of the application, a first signal is transmitted to a preset operation area through an antenna at intervals of a preset time, wherein the preset operation area is a space area outside the electronic equipment; receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area; determining a first input position of the operation body for performing a first input operation based on the first signal and the second signal; and determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is the corresponding relation between the input position and the input information. Therefore, the method can realize the space input without being influenced by the intensity of the illumination environment, thereby improving the accuracy of information input.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flow chart of an information input method provided by an embodiment of the present application;
FIG. 2 is a schematic diagram of input of a single space key based on a millimeter wave FM continuous wave radar;
FIG. 3 is an input schematic diagram of a spaced keyboard based on a millimeter wave frequency modulated continuous wave radar array;
FIG. 4 is a schematic diagram illustrating a determination of a first input operation;
FIG. 5 is a schematic diagram illustrating a process of establishing a mapping relationship between finger action habits and keyboard characters;
FIG. 6 is a schematic structural diagram of an information input device provided in an embodiment of the present application;
fig. 7 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;
fig. 8 is a schematic hardware structure diagram of an electronic device implementing various embodiments of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The information input provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Referring to fig. 1, fig. 1 is a flowchart of an information input method provided in an embodiment of the present application, and is applied to an electronic device, as shown in fig. 1, including the following steps:
In this embodiment, the electronic device may include a plurality of antennas, and the plurality of antennas may include a transmitting antenna and a receiving antenna, where both the transmitting antenna and the receiving antenna may be millimeter wave radar antennas, the transmitting antenna is configured to transmit a radar to a space, and the receiving antenna is configured to receive a signal, which is reflected by an object, of the radar transmitted by the transmitting antenna.
The purpose of this application embodiment is through transmitting antenna transmission radar, and receive the signal that the radar sent back through the operation body through receiving antenna, through transmission signal and reflected signal, come the location and the operation of location operation body to realize the input of operation body space button.
At least one radar chip can be installed in the electronic device to implement the function of the air-insulated keyboard, wherein the radar chip can have an antenna structure with at least one transmitting antenna and at least one receiving antenna, that is, one radar chip can implement the function of at least one air-insulated key.
The number of radar chips installed on the electronic device may be set according to the complexity of the function of the overhead keyboard implemented by the electronic device, and if the implemented overhead keyboard is complex, for example, the overhead keyboard includes not only keys with 26 letters and keys with 10 numbers, but also other instruction keys, such as a "shift" key, in this application scenario, a relatively large number of radar chips may need to be installed on the electronic device. If the function of the space keyboard is simple, a small number of radar chips are mounted on the electronic equipment in the application scene, so that the requirement can be met.
In an alternative embodiment, the input of a single space key may be implemented based on millimeter wave frequency modulated continuous wave radar, as described in detail below.
Referring to fig. 2, fig. 2 is an input schematic diagram of a single space-separated key based on a millimeter wave frequency modulated continuous wave radar, and as shown in fig. 2, the electronic device may be equipped with a radar chip 201, where the radar chip 201 has an antenna structure with 1 transmitting antenna and 2 receiving antennas, and in order to implement more convenient input, the electronic device may also be equipped with a bracket 202 to fix the electronic device.
The electronic device may transmit a first signal, such as a radar beam 203 shown in fig. 2, to a preset operation area through the transmitting antenna at preset time intervals, where the first signal may be a frequency modulated continuous wave radar, and the waveform may be a sawtooth wave, which is represented by the following formula (1):
wherein A isTCan represent the amplitude of the transmitted signal, f is the carrier center frequency, fT(τ) is the frequency of the transmitted signal. The frequency of the further transmitted signal may be expressed as shown in the following equation (2):
fT(τ)＝τB/T (2)
wherein, B is the signal bandwidth, and T is the sweep frequency period of the frequency modulation signal.
The preset operation area can be a space area in a preset range in front of a screen of the electronic device, and the electronic device can control the transmitting antenna to transmit the first signal to the space area in the preset range in front of the screen of the electronic device. The transmitting position may correspond to a coordinate in a first direction, such as an x direction, and the transmitting position may be different according to a mounting position of the radar chip 201.
And 102, receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area.
In this step, the operation body refers to an object that performs space input, and may be a finger, a stylus, or another object, which is not specifically limited herein. In the following embodiments, the operation body will be described by taking a finger as an example.
A signal reflected by the first signal through the object in the preset operation area may be received, and the reflected signal may be represented as the following expression (3):
wherein A isRCan represent the amplitude of the reflected signal, Δ t is the time delay between the reflected signal and the transmitted signal, fR(τ) is the frequency of the reflected signal. The frequency of the reflected signal can be expressed as shown in the following equation (4):
fR(τ)＝(τ-Δt)B/T+Δfd (4)
wherein, Δ fdIs the doppler shift.
Since the amplitude of the reflection of the electromagnetic wave signal against the finger is different from the amplitude of the reflection against another object, e.g. a tableRIn contrast, therefore, the finger can be determined to be located within the preset operation region by judging the reflection amplitude of the received signal. Correspondingly, a second signal of the first signal after being transmitted by the finger in the preset operation area is received.
And 103, determining a first input position of the operating body for performing the first input operation based on the first signal and the second signal.
In order to realize the input of the space key, two judgments need to be realized, namely the judgment of the position of the operation body, namely the position of the operation body in the preset operation area, and the judgment of the input operation executed by the operation body, namely the judgment of the action of knocking the key by the finger.
And the position of the finger is firstly positioned for realizing the input of the spaced keys. Specifically, as shown in fig. 2, the radar chip radiates an electromagnetic wave, i.e., a first signal, into the space, and the transmitting position corresponds to different x-coordinates. The reflection amplitude of the electromagnetic wave signal when encountering the finger is different from the reflection amplitude when encountering other objects (such as tables), the finger can be determined to be positioned in a preset operation area through judgment of the reflection amplitude, and correspondingly, the coordinate information of the finger in the x direction is obtained.
The second signal reflected by the finger is received by the radar antenna, and as can be seen from equation (1) and equation (3), there is a time delay Δ t between receiving and transmitting, and the distance between the radar antenna and the finger can be determined based on the time delay, and the distance, i.e. the coordinate information of the finger in the second direction, such as the y direction, can be expressed as equation (5) below:
l＝cΔt/2 (5)
wherein l is the distance between the radar antenna and the finger, and c is the speed of light in vacuum.
It should be noted that, since it is difficult to measure Δ T in practical situations, after receiving the reflected signal, the radar antenna down-converts the reflected signal and the transmitted signal to an intermediate frequency signal, so that the slope B/T ═ f of the radar sawtooth wave is determined according to the slope of the radar sawtooth waveIFAt, i.e. from the intermediate frequency fIFTo obtain Δ t.
By the position coordinates (x) of the finger1，y1) The spatial correspondence between the finger and the blank key can be obtained, as shown in fig. 2. In fig. 2, the key region is only used for identifying the key position, and the key outline is not displayed in the region in actual application.
In addition, the implementation of the blank key input also needs to judge the action of the finger to determine whether the finger is performing the input operation. Since the reflected signal of at least one position of the finger received by the radar antenna changes during the movement of the finger, it can be determined whether the finger has performed a tapping action, i.e. whether an input operation has been performed, by determining the reflected signal of at least one position of the finger.
In a case where it is determined that the operation body performs the first input operation, a first input position at which the operation body performs the first input operation may be determined based on the first signal and the second signal. In particular, the determination may be based on the transmission location of the first signalCoordinate information x of the first input position in the x direction2And determining coordinate information y of the first input position in the y direction based on the time interval between the transmission time of the first signal and the reception time of the second signal2The first input position is composed of coordinate information in the x direction and coordinate information in the y direction, and can be expressed as (x)2，y2)。
And 104, determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is a corresponding relation between the input position and the input information.
In this step, the preset mapping relationship may be a corresponding relationship between an input position and input information, where the input position may be a fixed input position, or may be a relative input position with respect to an initial position.
For example, when the blank input is performed, a relatively fixed space region which is separated from the electronic device by a fixed distance and faces the screen of the electronic device may be determined as the region for the blank input, the input position of the region is relatively fixed, and the user can perform the information input only by performing the input operation at the input position of the region for the blank input. Correspondingly, the input position in the preset mapping relation is a fixed input position.
For example, when the space input is performed, an initial position of the information input may be first determined, and the initial position may default to a first line of the keyboard character "ASDF", and then the information input may be performed based on the initial position. Correspondingly, the input position in the preset mapping relationship is a relative input position relative to the initial position.
When the preset mapping relationship is a corresponding relationship between a fixed input position and input information, the input information corresponding to the first input position may be directly obtained from the preset mapping relationship, where the input information is first target input information corresponding to the first input operation.
When the preset mapping relationship is a corresponding relationship between a relative input position and input information relative to an initial position, the initial position of the blank input may be acquired, the relative input position between the first input position and the initial position may be determined, and input information corresponding to the relative input position, which is first target input information corresponding to the first input operation, may be acquired from the preset mapping relationship.
Of course, in order to reduce the conversion of the relative input position per input operation, after the initial position of the blank input is acquired, the input position in the preset mapping relationship may be adjusted based on the initial position, so as to adjust the input position in the preset mapping relationship to the fixed input position of the present blank input. For example, if the initial position is (10, 20), the initial position corresponds to the input information as a character "a", the relative input position (1, 1) in the predetermined mapping relation with respect to the initial position corresponds to the input information as a character "Z", the relative input position in the predetermined mapping relation may be adjusted based on the initial position to a fixed input position, and after the adjustment, the input position (11, 21) in the predetermined mapping relation may correspond to the input information as a character "Z". Then, the input information corresponding to the first input position may be obtained from the adjusted preset mapping relationship, where the input information is first target input information corresponding to the first input operation.
In this embodiment, the input of a single space key can be realized based on the millimeter wave frequency modulation continuous wave radar, and compared with an optical projection keyboard, the input of the space key can be not affected by the illumination environment, and the accuracy of information input can be improved. In addition, external projection equipment is not needed, various environments can be better adapted, extra learning cost is not needed, and the compatibility and the usability are stronger.
In another alternative embodiment, the input of the spaced keyboard may be implemented based on a millimeter wave fm continuous wave radar array, as described in detail below.
Referring to fig. 3, fig. 3 is a schematic diagram of an input of an air-spaced keyboard based on a millimeter wave fm continuous wave radar array, as shown in fig. 3, an electronic device may be equipped with a plurality of radar chips 301, and the plurality of radar chips may form a radar array, and a single-row array of 1 × 5 radar chips is taken as an example to illustrate the input of the air-spaced keyboard. The radar chip 301 may be an antenna structure with 2 transmitting antennas and 4 receiving antennas, and may finally form an antenna array structure with 10 transmitting antennas and 20 receiving antennas.
The electronic device may transmit a first signal to a predetermined operating area through the transmitting antenna at a predetermined time interval, such as the radar beam 302 shown in fig. 3, the frequency sweep duration of a common radar chip is ten milliseconds, and the typing speed of a common person is about 1 chinese character/second, so that the frequency sweep frequency of the radar chip can meet the typing requirements of most people.
In order to realize the input of the space keyboard, two judgments are needed to be realized, namely the position of the finger, namely the space corresponding relation between the finger and the keyboard character, and the judgment of the input operation performed by the finger, namely which keyboard character is hit by the finger.
And the input of the space keyboard is realized by firstly positioning the position of the finger. As shown in fig. 3, 10 transmitting positions of the radar array radiate electromagnetic waves into space, and the 10 transmitting positions correspond to different x-coordinates. The reflection amplitude of the electromagnetic wave signal encountering the finger is different from the reflection amplitude of the electromagnetic wave signal encountering other objects (such as tables), and the coordinate information of the finger in the x direction can be acquired by judging the reflection amplitude of the electromagnetic wave signal.
The signal reflected by the finger is received by the radar antenna, and as can be known from formula (3), there is a time delay Δ t between the reception and the transmission of the signal, and the distance between the radar antenna and the finger can be obtained by formula (5), and the distance is coordinate information of the finger in the y direction.
The initial value of the y-direction coordinate of the finger obtained by the radar antenna is default to the first row of the keyboard character "ASDF" (i.e. the third row of the keyboard as shown in fig. 3). The main input area of a general keyboard only has four rows in the y direction, so that the finger position in the y direction can be judged by only four steps. The fourth gear may be referred to as a near gear, a middle-far gear and a far gear, respectively, and the third row of the keyboard may be referred to as a middle-far gear, while the first row of the keyboard may be referred to as a near gear, the second row of the keyboard may be referred to as a middle gear, and the fourth row of the keyboard may be referred to as a far gear.
In the moving process of the finger, if it is detected that the coordinate value of the finger in the y direction is smaller than the initial position, the finger may be located at a near gear or a middle gear, and then the actual position of the finger is specifically determined according to the coordinate value of the y direction, for example, if the initial value of the y direction is 20, the finger is located at the middle gear if the coordinate value of the finger in the current y direction is 19, and the finger is located at the near gear if the coordinate value of the finger in the current y direction is 18. If the coordinate value of the position of the finger relative to the initial position in the y direction is detected to be increased, the finger is located at a far gear.
By determining the coordinates (x, y) of each finger position, the spatial correspondence between the fingers and the characters input by the keyboard can be obtained, as shown in fig. 3, the keyboard area in fig. 3 is only used for identifying the character position, and the keyboard outline is not displayed in the area in actual application.
When the blank input is carried out, whether the finger performs the first input operation and the coordinate position of the first input operation can be determined by combining the judgment of the finger position and the reflection signal of at least one position of each finger, so that the specific character input by the user can be determined.
In this embodiment, can realize the input of spaced keyboard based on millimeter wave frequency modulation continuous wave radar array, for the projection keyboard of optics, it can not receive the influence of illumination environment, can improve the accuracy of information input. In addition, external projection equipment is not needed, various environments can be better adapted, extra learning cost is not needed, and the compatibility and the usability are stronger. Compared with the traditional keyboard on the screen of the electronic equipment, the keyboard on the screen of the electronic equipment is not limited by the size of the screen of the electronic equipment, so that the convenience of information input can be improved, a large number of characters can be input, and the information input efficiency is improved.
Optionally, the operating body is a finger, the second signal includes at least one reflected signal, and a parameter value of a target parameter associated with each reflected signal changes during the movement of the finger, where the target parameter includes at least one of a reflection amplitude and a distance from a reflection position of the first signal;
according to a first embodiment, after step 102, the method further includes:
determining a first initial position of the operation body in the preset operation area;
and determining that the first input operation exists in the operation body under the condition that the parameter value of the target parameter changes and returns to an initial value, wherein the initial value is the parameter value of the target parameter when the operation body is at the first initial position.
In this embodiment, the transmission signal of the radar antenna may generate a reflection signal when encountering a finger, and the reflection signal at each position of the finger may be different, so that the electronic device may receive at least one reflection signal after the transmission signal is reflected by the finger. And in the process of moving the finger, a parameter value of a target parameter associated with each reflected signal changes, and the target parameter may be at least one of a reflection amplitude of the reflected signal and a transmission position of the first signal, that is, a distance between a corresponding position of the finger and the radar antenna.
The determination of the finger movement in this embodiment can be realized by the cooperation of three reflected signals, and the following takes the reflected signals at the upper, middle, and lower positions of the finger as an example to describe how to determine the first input operation.
Referring to fig. 4, fig. 4 is a schematic diagram illustrating a determination of performing a first input operation, as shown in fig. 4, an electronic device is fixed on a desktop 402 through a bracket 401, the electronic device transmits a radar beam 403 to a preset operation area through an antenna at preset time intervals, a finger 404 is located in the preset operation area, a solid line in the diagram indicates a state where the finger 404 is in contact with the desktop 402, and a dotted line indicates a state where the finger 404 is lifted.
In the initial state, the finger 404 is in contact with the table top, and the reflected signals at the upper, middle and lower three positions of the finger are respectively marked as s as shown by the solid line in fig. 4R1、sR2And sR3The reflection amplitudes can be respectively marked as AR1、AR2And AR3By the above formula (5),distance information of three positions can be determined, and is respectively marked as lR1、lR2And lR2。
When the finger is lifted, the reflected signals at the three positions of the finger, i.e., the upper, middle and lower positions, are respectively denoted as s'R1、s'R2And s'R3The reflection amplitudes can be respectively recorded as A'R1、A'R2And A'R3Similarly, the distance information of three positions can be determined by the above formula (5), and is respectively recorded as l'R1、l'R1And l'R1. The reflection amplitudes and the distance information of the reflection signals at the three positions are changed from the initial state.
Finally, the finger falls down and contacts with the desktop again to finish the knocking action, and the reflected signals at the upper, middle and lower positions of the finger are restored to the initial state, namely sR1、sR2And sR3。
Through judgment of parameter values of target parameters (which may include reflection amplitude and/or distance information) associated with the reflection signals of the upper, middle and lower three positions of the finger, whether the finger makes a tapping action, that is, whether the first input operation is performed, may be determined.
In this embodiment, by determining the parameter values of the target parameters associated with the reflection signals at different positions of the finger, it can be determined whether the finger performs the first input operation.
Optionally, the step 103 specifically includes:
acquiring the transmitting position of the first signal and a first time interval in real time in the process of changing the parameter value of the target parameter, wherein the first time interval is the time interval between the transmitting time of the first signal and the receiving time of the second signal;
determining a first input position of the first input operation based on the emission position and the first time interval, wherein the emission position is used for determining coordinate information of the first input position in a first direction, and the first time interval is used for determining coordinate information of the first input position in a second direction.
In this embodiment, in the process of moving the finger in real time, a parameter value of a target parameter associated with the reflection signal of at least one position of the finger may change, and a transmission position of a transmission signal corresponding to the reflection signal of the finger performing the first input operation, and a time interval between a transmission time of the transmission signal and a reception time of the reflection signal, that is, a first time interval may be obtained in real time.
Thereafter, a first input position for the first input operation may be determined based on the emission position and the first time interval. Coordinate information of the first input operation in the x-direction may be determined based on the emission location and coordinate information of the first input operation in the y-direction may be determined based on the first time interval.
Specifically, there may be various scenarios in which the user performs the space-separated input, for example, the first input operation is performed at an initial position of the finger, in such a scenario, an emission position of the first signal may not change, and a change of the first time interval is within a preset range, and accordingly, in a case that the first input operation is detected to exist in the finger, a position coordinate of the contact between the finger and the desktop in the initial state may be correspondingly obtained, where the position coordinate is a first input position of the first input operation.
For another example, when the first input operation is performed at another position, in such a scenario, during the movement of the finger, the change of the first time interval may exceed the preset range, and the change state may be decreased first and then returned to the initial position, at this time, the position where the first time interval is the minimum may be determined as the coordinate information of the first input operation in the y direction. For example, the initial position of the finger is the position of the character "a", and when the user needs to input the character "Q", in the process of moving the finger, the finger performs the first input operation at the position of the character "Q", where the first time interval is changed to the minimum, and the position is the coordinate information of the first input operation in the y direction. Alternatively, the changing state of the first time interval may be changed to be larger and then returned to the initial position, and at this time, the position where the first time interval is the maximum may be determined as the coordinate information of the first input operation in the y direction.
In the moving process of the finger, if it is detected that the emitting position of the first signal changes, the coordinate information of the first input operation in the x direction may be the changed limit position, that is, the coordinate information when the emitting position is the minimum or the emitting position is the maximum.
In this embodiment, the emitting position and the first time interval of the first signal are obtained in real time in the process of changing the parameter value of the target parameter associated with the emitting signal, and based on the emitting position and the first time interval, the first input position of the first input operation can be determined, and then the first target input information corresponding to the executed first input operation can be determined, so as to realize the input of the blank keyboard.
Optionally, based on the first embodiment, the step 104 specifically includes:
adjusting an input position in the preset mapping relation based on a first initial position of the operation body in the preset operation area;
and determining the input information corresponding to the first input position as the first target input information based on the adjusted preset mapping relation.
In this embodiment, in order to achieve flexibility of the blank input, the position of the blank keyboard may be determined by determining a first initial position of the finger in the preset operation area during use without limiting the position of the blank keyboard.
The first initial position may be set according to an input habit of a user, when the user uses a function of the space-apart keyboard, the user may place a finger at any position of a preset operation area, and when the finger is stationary, the electronic device may determine the position where the finger is placed when the finger is stationary as the first initial position, as shown in fig. 3, the first initial position may default to a third row of the space-apart keyboard.
And then, after the first initial position is detected, prompting a user to use an air-separating keyboard to input information, detecting whether the user performs a first input operation, if not, continuing to detect the initial position of the finger of the user, if so, determining that the user starts to input information, and adjusting the input position in the preset mapping relation according to the first initial position so as to adjust the input position in the preset mapping relation to the fixed input position of the air-separating input at the present time.
For example, if the first initial position is (10, 20), the first initial position corresponds to the input information as a character "a", the relative input position (1, 1) in the predetermined mapping relation with respect to the first initial position corresponds to the input information as a character "Z", the relative input position in the predetermined mapping relation may be adjusted to a fixed input position based on the first initial position, and after the adjustment, the input position (11, 21) in the predetermined mapping relation may correspond to the input information as a character "Z".
Correspondingly, the input information corresponding to the first input position may be obtained from the adjusted preset mapping relationship, where the input information is the first target input information corresponding to the first input operation.
In this embodiment, the position of the blank keyboard is set according to the input habit of the user, so that the flexibility of blank input can be improved. Adjusting an input position in the preset mapping relation by a first initial position based on the operation body being located in the preset operation area; and determining the input information corresponding to the first input position as the first target input information based on the adjusted preset mapping relation, so that the conversion of the relative input position in each input operation can be reduced, and the processing speed in the space-time input is improved.
Optionally, before the step 101, the method further includes:
determining a second initial position of the operation body in the preset operation area;
detecting a second input operation executed by the operating body based on the calibration input information in the reference mapping relation;
determining a second input position of the operation body for performing a second input operation;
determining second target input information corresponding to the second input operation based on the second input position and a reference mapping relation;
and under the condition that the calibration input information is different from second target input information, adjusting an input position corresponding to the calibration input information in the reference mapping relation based on relative distance information between the second input position and the second initial position to obtain the preset mapping relation.
In this embodiment, since the input actions and habits of each person are different, the mapping between the finger actions and the keyboard characters mounted in the electronic device is only used as the initial mapping, and the corresponding relationship between the input positions and the input information in the preset mapping relationship can be adjusted according to the calibration of the user input in the space.
Under the condition of starting the calibration function, signals can be transmitted to a preset operation area through an antenna at preset time intervals; receiving a signal of the transmitted signal reflected by the finger in the preset operation area; and determining a second initial position of the finger in the preset operation area based on the emission signal and the reflection signal, and detecting a second input operation executed by the finger based on the calibration input information in the reference mapping relation.
And then, determining a second input position of the finger for performing a second input operation, and determining second target input information corresponding to the second input operation based on the second input position and the reference mapping relationship, wherein if the calibration input information is different from the second target input information, it can be shown that the input action habit of the user may not be matched with the correspondence relationship between the input position and the input information in the reference mapping relationship.
The electronic device may pre-adjust input information corresponding to the second input position in the reference mapping relationship based on the relative distance information between the second input position and the second initial position, and display calibration input information again to allow the user to perform blank input, and may finally obtain the preset mapping relationship based on the adjusted reference mapping relationship if the determined input information is the same as the calibration input information.
Specifically, referring to fig. 5, fig. 5 is a schematic diagram of a flow for establishing a mapping relationship between finger action habits and keyboard characters, as shown in fig. 5, including the following steps:
502, displaying specific characters to allow a user to input the characters in a spaced mode;
step 503, whether the character recognition accuracy is higher than 98%; if yes, go to step 506, otherwise go to step 504;
In the embodiment, through the calibration process, the blank keyboard which accords with the input action and habit of the user can be realized, the flexibility of using the blank keyboard by the user is improved, and the experience of the user is improved.
It should be noted that, in the information input method provided in the embodiment of the present application, the execution main body may be an information input device, or a control module in the information input device for executing the loaded information input method. In the embodiment of the present application, an example in which an information input device executes a loaded information input method is taken as an example, and the information input method provided in the embodiment of the present application is described.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an information input device provided in an embodiment of the present application, and is applied to an electronic device, as shown in fig. 6, the information input device includes:
a transmitting module 601, configured to transmit a first signal to a preset operating area through an antenna at intervals of a preset time, where the preset operating area is a spatial area outside the electronic device;
a receiving module 602, configured to receive a second signal obtained by reflecting the first signal by an operation body in the preset operation area;
a first determining module 603, configured to determine, based on the first signal and the second signal, a first input position at which the operating body performs a first input operation;
a second determining module 604, configured to determine, based on the first input position and a preset mapping relationship, first target input information corresponding to the first input operation, where the preset mapping relationship is a corresponding relationship between an input position and input information.
Optionally, the operating body is a finger, the second signal includes at least one reflected signal, and a parameter value of a target parameter associated with each reflected signal changes during the movement of the finger, where the target parameter includes at least one of a reflection amplitude and a distance from a reflection position of the first signal; the device further comprises:
the third determining module is used for determining that the operating body is located at a first initial position of the preset operating area;
and a fourth determining module, configured to determine that the first input operation exists in the operating body when the parameter value of the target parameter changes and the parameter value of the target parameter returns to an initial value, where the initial value is the parameter value of the target parameter when the operating body is at the first initial position.
Optionally, the first determining module 603 includes:
an obtaining unit, configured to obtain, in real time, a transmitting position of the first signal and a first time interval in a process of changing a parameter value of the target parameter, where the first time interval is a time interval between a transmitting time of the first signal and a receiving time of the second signal;
a first determination unit, configured to determine a first input position of the first input operation based on the emission position and the first time interval, where the emission position is used to determine coordinate information of the first input position in a first direction, and the first time interval is used to determine coordinate information of the first input position in a second direction.
Optionally, the second determining module 604 includes:
the adjusting unit is used for adjusting an input position in the preset mapping relation based on a first initial position of the operation body in the preset operation area;
and the second determining unit is used for determining the input information corresponding to the first input position as the first target input information based on the adjusted preset mapping relation.
Optionally, the apparatus further comprises:
a fifth determining module, configured to determine that the operating body is located at a second initial position of the preset operating area;
the detection module is used for detecting a second input operation executed by the operation body based on the calibration input information in the reference mapping relation;
a sixth determining module, configured to determine a second input position where the operating body performs a second input operation;
a seventh determining module, configured to determine, based on the second input position and a reference mapping relationship, second target input information corresponding to the second input operation;
and the adjusting module is used for adjusting an input position corresponding to the calibration input information in the reference mapping relationship based on the relative distance information between the second input position and the second initial position under the condition that the calibration input information is different from the second target input information, so as to obtain the preset mapping relationship.
In the embodiment of the application, a transmitting module 601 transmits a first signal to a preset operation area through an antenna at intervals of a preset time, wherein the preset operation area is a space area outside the electronic device; receiving, by the receiving module 602, a second signal obtained by reflecting the first signal by an operation body in the preset operation area; determining, by the first determining module 603, a first input position at which the operating body performs the first input operation based on the first signal and the second signal; and determining, by a second determining module 604, first target input information corresponding to the first input operation based on the first input position and a preset mapping relationship, where the preset mapping relationship is a corresponding relationship between an input position and input information. Therefore, the method can realize the space input without being influenced by the intensity of the illumination environment, thereby improving the accuracy of information input.
The information input device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The information input device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The information input device provided in the embodiment of the present application can implement each process implemented by the information input device in the method embodiment of fig. 1, and is not described here again to avoid repetition.
Optionally, an electronic device is further provided in this embodiment of the present application, and includes a memory 701, a processor 702, and a program or an instruction stored in the memory 701 and capable of being executed on the processor 702, where the program or the instruction is executed by the processor 702 to implement each process of the above information input method embodiment, and the same technical effect can be achieved, and details are not described here to avoid repetition.
It should be noted that the electronic devices in the embodiments of the present application include the mobile electronic devices and the non-mobile electronic devices described above.
Fig. 8 is a schematic hardware structure diagram of an electronic device implementing various embodiments of the present application.
The electronic device 800 includes, but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810.
Those skilled in the art will appreciate that the electronic device 800 may further comprise a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 810 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The electronic device structure shown in fig. 8 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here.
The radio frequency unit 801 is configured to transmit a first signal to a preset operation area through an antenna at intervals of a preset time, where the preset operation area is a space area outside the electronic device; receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area;
a processor 810, configured to determine, based on the first signal and the second signal, a first input position at which the operating body performs a first input operation; and determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is the corresponding relation between the input position and the input information.
In the embodiment of the application, a radio frequency unit 801 transmits a first signal to a preset operation area through an antenna at intervals of a preset time, wherein the preset operation area is a space area outside the electronic device; receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area; determining, by the processor 810, a first input position at which the operating body performs a first input operation based on the first signal and the second signal; and determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is the corresponding relation between the input position and the input information. Therefore, the method can realize the space input without being influenced by the intensity of the illumination environment, thereby improving the accuracy of information input.
Optionally, the operating body is a finger, the second signal includes at least one reflected signal, and a parameter value of a target parameter associated with each reflected signal changes during the movement of the finger, where the target parameter includes at least one of a reflection amplitude and a distance from a reflection position of the first signal;
the processor 810 is further configured to determine that the operation body is located at a first initial position of the preset operation area; and determining that the first input operation exists in the operation body under the condition that the parameter value of the target parameter changes and returns to an initial value, wherein the initial value is the parameter value of the target parameter when the operation body is at the first initial position.
Optionally, the processor 810 is further configured to obtain, in real time, a transmitting position of the first signal and a first time interval in a process of changing a parameter value of the target parameter, where the first time interval is a time interval between a transmitting time of the first signal and a receiving time of the second signal; determining a first input position of the first input operation based on the emission position and the first time interval, wherein the emission position is used for determining coordinate information of the first input position in a first direction, and the first time interval is used for determining coordinate information of the first input position in a second direction.
Optionally, the processor 810 is further configured to adjust an input position in the preset mapping relationship based on a first initial position of the operation body in the preset operation area; and determining the input information corresponding to the first input position as the first target input information based on the adjusted preset mapping relation.
Optionally, the processor 810 is further configured to determine that the operation body is located at a second initial position of the preset operation area; detecting a second input operation executed by the operating body based on the calibration input information in the reference mapping relation; determining a second input position of the operation body for performing a second input operation; determining second target input information corresponding to the second input operation based on the second input position and a reference mapping relation; and under the condition that the calibration input information is different from second target input information, adjusting an input position corresponding to the calibration input information in the reference mapping relation based on relative distance information between the second input position and the second initial position to obtain the preset mapping relation.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned information input method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the above information input method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
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. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
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 application 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 (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 application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. An information input method applied to an electronic device includes:
transmitting a first signal to a preset operation area through an antenna at intervals of preset time, wherein the preset operation area is a space area outside the electronic equipment;
receiving a second signal of the first signal after the first signal is reflected by an operation body in the preset operation area;
determining a first input position of the operation body for performing a first input operation based on the first signal and the second signal;
and determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is the corresponding relation between the input position and the input information.
2. The method of claim 1, wherein the operating body is a finger, the second signal comprises at least one reflected signal, and a parameter value of a target parameter associated with each reflected signal changes during the movement of the finger, wherein the target parameter comprises at least one of a reflection amplitude and a distance from a reflection position of the first signal;
after receiving a second signal obtained by reflecting the first signal by an operation body in the preset operation area, the method further includes:
determining a first initial position of the operation body in the preset operation area;
and determining that the first input operation exists in the operation body under the condition that the parameter value of the target parameter changes and returns to an initial value, wherein the initial value is the parameter value of the target parameter when the operation body is at the first initial position.
3. The method according to claim 2, wherein the determining a first input position for the operating body to perform a first input operation based on the first signal and the second signal comprises:
acquiring the transmitting position of the first signal and a first time interval in real time in the process of changing the parameter value of the target parameter, wherein the first time interval is the time interval between the transmitting time of the first signal and the receiving time of the second signal;
determining a first input position of the first input operation based on the emission position and the first time interval, wherein the emission position is used for determining coordinate information of the first input position in a first direction, and the first time interval is used for determining coordinate information of the first input position in a second direction.
4. The method according to claim 1, wherein the determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relationship comprises:
adjusting an input position in the preset mapping relation based on a first initial position of the operation body in the preset operation area;
and determining the input information corresponding to the first input position as the first target input information based on the adjusted preset mapping relation.
5. The method of claim 1, wherein prior to transmitting the first signal to the predetermined operating region via the antenna at the predetermined time intervals, the method further comprises:
determining a second initial position of the operation body in the preset operation area;
detecting a second input operation executed by the operating body based on the calibration input information in the reference mapping relation;
determining a second input position of the operation body for performing a second input operation;
determining second target input information corresponding to the second input operation based on the second input position and a reference mapping relation;
and under the condition that the calibration input information is different from second target input information, adjusting an input position corresponding to the calibration input information in the reference mapping relation based on relative distance information between the second input position and the second initial position to obtain the preset mapping relation.
6. An information input device, applied to an electronic apparatus, comprising:
the transmitting module is used for transmitting a first signal to a preset operation area through an antenna at intervals of preset time, wherein the preset operation area is a space area outside the electronic equipment;
the receiving module is used for receiving a second signal after the first signal is reflected by an operation body in the preset operation area;
the first determination module is used for determining a first input position of the operation body for performing first input operation based on the first signal and the second signal;
and the second determining module is used for determining first target input information corresponding to the first input operation based on the first input position and a preset mapping relation, wherein the preset mapping relation is a corresponding relation between the input position and the input information.
7. The apparatus of claim 6, wherein the operating body is a finger, the second signal comprises at least one reflected signal, and a parameter value of a target parameter associated with each reflected signal changes during the movement of the finger, the target parameter comprising at least one of a reflection amplitude and a distance from a reflection position of the first signal; the device further comprises:
the third determining module is used for determining that the operating body is located at a first initial position of the preset operating area;
and a fourth determining module, configured to determine that the first input operation exists in the operating body when the parameter value of the target parameter changes and the parameter value of the target parameter returns to an initial value, where the initial value is the parameter value of the target parameter when the operating body is at the first initial position.
8. The apparatus of claim 7, wherein the first determining module comprises:
an obtaining unit, configured to obtain, in real time, a transmitting position of the first signal and a first time interval in a process of changing a parameter value of the target parameter, where the first time interval is a time interval between a transmitting time of the first signal and a receiving time of the second signal;
a first determination unit, configured to determine a first input position of the first input operation based on the emission position and the first time interval, where the emission position is used to determine coordinate information of the first input position in a first direction, and the first time interval is used to determine coordinate information of the first input position in a second direction.
9. The apparatus of claim 6, wherein the second determining module comprises:
the adjusting unit is used for adjusting an input position in the preset mapping relation based on a first initial position of the operation body in the preset operation area;
and the second determining unit is used for determining the input information corresponding to the first input position as the first target input information based on the adjusted preset mapping relation.
10. The apparatus of claim 6, further comprising:
a fifth determining module, configured to determine that the operating body is located at a second initial position of the preset operating area;
the detection module is used for detecting a second input operation executed by the operation body based on the calibration input information in the reference mapping relation;
a sixth determining module, configured to determine a second input position where the operating body performs a second input operation;
a seventh determining module, configured to determine, based on the second input position and a reference mapping relationship, second target input information corresponding to the second input operation;
and the adjusting module is used for adjusting an input position corresponding to the calibration input information in the reference mapping relationship based on the relative distance information between the second input position and the second initial position under the condition that the calibration input information is different from the second target input information, so as to obtain the preset mapping relationship.
11. An electronic device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the information input method of any one of claims 1 to 5.
12. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the information input method according to any one of claims 1 to 5.
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