WO2011088793A1

WO2011088793A1 - Terminal and input method thereof

Info

Publication number: WO2011088793A1
Application number: PCT/CN2011/070422
Authority: WO
Inventors: 刘俊峰; 马文超
Original assignee: 北京联想软件有限公司; 联想(北京)有限公司
Priority date: 2010-01-22
Filing date: 2011-01-20
Publication date: 2011-07-28
Also published as: CN102135839A; CN102135839B

Abstract

A terminal and an input method thereof are provided. The method comprises: determining whether the distance between an input object and the upper surface of a keyboard is less than a predetermined value; determining whether a keying signal is generated by at least a press key; when the distance is less than the predetermined value and there is no keying signal generated, collecting the motion trail of the input object on the upper surface of the keyboard; and generating an input command based on the motion trail. The method provides a new way to input information to the terminal.

Description

Terminal and input method thereof

The present invention relates to the field of input control technologies, and in particular, to a terminal and an input method thereof. Background technique

Currently, the computer includes an external input device such as a keyboard or a mouse, and an external input device can input specific information to the computer. For example, characters and various control commands can be input through the keyboard, and the movement of the cursor on the display desktop of the computer can be controlled by moving the mouse, and other commands can be further input by clicking or pressing the left and right buttons of the mouse. A touchpad (TouchPad) is usually configured on a portable notebook, and the user can perform a mouse-like operation by sliding a finger on the touchpad. Summary of the invention

A technical problem to be solved by embodiments of the present invention is to provide a terminal and an input method thereof for inputting information to a computer.

To solve the above technical problem, the solution provided by the embodiment of the present invention is as follows:

An input method is applied to a terminal having a keyboard and an image collection unit, wherein an upper surface of the keyboard is located in a collection area of the image collection unit, and the keyboard includes at least one button, wherein Input methods include:

Determining whether a distance between the input body and an upper surface of the keyboard is less than a predetermined value;

Determining whether the at least one button generates a button signal;

And when the distance is less than the predetermined value, and the button signal is not generated, collecting a movement trajectory of the input body on an upper surface of the keyboard;

An input command is generated based on the movement trajectory.

Preferably, in the above input method, the step of determining whether the distance between the input body and the upper surface of the keyboard is less than a predetermined value comprises:

Detecting a change in the amount of electricity of the conductive layer disposed on the keyboard;

When it is detected that the change in the electric quantity satisfies a predetermined condition, it is judged that the distance between the input body and the upper surface of the keyboard is smaller than the predetermined value.

Preferably, in the above input method, the determining input body and the upper surface of the keyboard The steps of whether the distance is less than a predetermined value include:

Detecting whether an optical signal having a distance from the upper surface above the upper surface of the keyboard that is less than the predetermined value is blocked;

Upon detecting that the optical signal is occluded, it is determined that the distance between the input body and the upper surface of the keyboard is less than the predetermined value.

Preferably, in the above input method, the terminal has a keyboard pointing input mode and a keyboard key input mode, and before the step of determining whether the distance between the input body and the upper surface of the keyboard is less than a predetermined value, the method further includes:

Receiving a control signal for instructing entry into the keyboard pointing input mode;

4, according to the control signal, controlling the terminal to enter the keyboard pointing input mode.

Preferably, in the above input method, the input command is a cursor control command.

Preferably, in the above input method, the input command is a cursor control command;

After controlling the terminal to enter the keyboard pointing input mode, the input method further includes: receiving the button signal, and performing a left mouse button operation at a current position of the cursor according to the button signal.

Preferably, in the above input method, the terminal includes a display unit, and when the moving track of the input body is on the upper surface of the keyboard, the input method further includes:

The set includes a first image of the input body;

The first image is added to an original display image of the display unit.

The embodiment of the invention further provides a terminal, including:

a keyboard, the keyboard comprising at least one button;

a first determining unit, configured to determine whether a distance between the input body and an upper surface of the keyboard is smaller than a predetermined value;

a second determining unit, configured to determine whether the at least one button generates a button signal, and an image collecting unit, wherein an upper surface of the keyboard is located in a collection area of the image collecting unit, and the distance is smaller than the Determining a predetermined value, and when the button signal is not generated, collecting a movement trajectory of the input body on an upper surface of the keyboard;

And a command generating unit, configured to generate an input command according to the moving track.

Preferably, in the foregoing terminal, the first determining unit includes:

a first detecting unit, configured to detect a change in a quantity of the electric quantity of the conductive layer disposed on the keyboard; and a third determining unit, configured to determine, when detecting that the change in the quantity of the electric quantity meets a predetermined condition The distance between the input body and the upper surface of the keyboard is less than the predetermined value.

Preferably, in the foregoing terminal, the first determining unit includes:

a second detecting unit, configured to detect whether an optical signal whose distance from the upper surface of the keyboard and the upper surface is less than the predetermined value is blocked;

And a fourth determining unit, configured to determine that a distance between the input body and an upper surface of the keyboard is less than the predetermined value when detecting that the optical signal is occluded.

Preferably, in the terminal, the terminal has a keyboard pointing input mode and a keyboard key input mode, and the terminal further includes:

a receiving unit, configured to receive a control signal for instructing to enter the keyboard pointing input mode; and a first control unit, configured to control the terminal to enter the keyboard pointing input mode according to the control signal.

Preferably, in the terminal, the input command is a cursor control command;

The terminal further includes:

And a second control unit, configured to: after the terminal enters the keyboard pointing input mode, receive the button signal, and perform a left mouse button operation at a current position of the cursor according to the button signal.

Preferably, in the above terminal,

The image collection unit is further configured to collect a first image including the input body;

The terminal further includes:

Display unit;

And an adding unit, configured to add the first image to an original display image of the display unit.

It can be seen from the above that a terminal and an input method thereof are provided by using an upper surface of a keyboard as a keyboard input area, and the keyboard surface can provide a larger surface than a touch panel of a conventional portable notebook. The input area is therefore convenient for the user's input operation. In the embodiment of the present invention, by combining the distance detection and the moving track set, after detecting that the distance between the user and the upper surface of the keyboard is less than a predetermined value, the movement track of the input body on the upper surface of the keyboard is started, and the distance detection and control are controlled. The timing of moving the trajectory is collected to obtain a true and accurate movement trajectory desired by the user, thereby improving the accuracy of the input and avoiding the problem of input misoperation. The embodiment of the invention can not only realize the movement of the control cursor, but also realize various operations of the mouse, as well as text/character input (handwriting recognition), multi-touch input, scrolling operation and the like. The embodiment of the invention also provides an input mode of the physical switch control terminal. DRAWINGS

1 is a schematic flow chart of an input method of a computer according to an embodiment of the present invention;

2 is a schematic diagram of a keyboard pointing input area according to an embodiment of the present invention;

3 is a schematic diagram of a light detection mode according to an embodiment of the present invention;

4 is a schematic diagram of a camera detection mode according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a method for detecting a capacitive sensor according to an embodiment of the present invention; FIG.

6 is a schematic diagram showing the position of a camera that collects a moving track in an embodiment of the present invention;

7 is a schematic flowchart of superimposed display in an embodiment of the present invention;

8 is a schematic structural diagram of a terminal according to Embodiment 3 of the present invention;

9a is a schematic structural diagram of a keyboard of a terminal according to an embodiment of the present invention;

9b is a schematic structural diagram of a keyboard of a terminal according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a keyboard input mode controlled by a palm rest area according to an embodiment of the present invention; FIG. 11 is another schematic diagram of a keyboard input mode controlled by a palm rest area according to an embodiment of the present invention. detailed description

An embodiment of the present invention provides a method for inputting a terminal, where the terminal includes a keyboard and an image collection unit, and an upper surface of the keyboard is located in a collection area of the image collection unit and includes at least one button. The input method determines whether a distance between the input body (such as a user's finger or a stylus pen) and the upper surface of the keyboard is less than a predetermined value, and determines whether the at least one button generates a button signal, where the distance is less than the predetermined value And when the button signal is not generated, the movement track of the input body on the upper surface of the keyboard is collected, and an input command is generated according to the movement track.

The present invention will be further described by way of specific embodiments with reference to the accompanying drawings. In the following embodiments, a computer will be described as a terminal.

Referring to FIG. 1, the input method of the computer in this embodiment includes the following steps:

Step 11: Determine whether a distance between the input body and the upper surface of the keyboard is less than a predetermined value, and whether a button of the keyboard generates a button signal. Here, the distance between the input body and the upper surface of the keyboard is less than a predetermined value, which means that the input body comes into contact with the upper surface of the keyboard, but the button on the keyboard is not pressed, or the button is pressed, but only the button is pressed. Part of it does not produce a button The signal, or the input body and the upper surface of the keyboard are not in contact, but the distance between the two is small.

As shown in Fig. 2, taking a portable notebook computer as an example, this embodiment uses the upper surface of the keyboard (the dotted line in the figure) as the keyboard pointing input area, which is obviously larger than the touch panel of the conventional notebook computer. There are several ways to determine the distance between the input body (which can be the user's finger, or other input components, such as a stylus, etc.) and the upper surface of the keyboard:

(1) Light detecting mode: detecting whether an optical signal whose distance from the upper surface of the keyboard and the upper surface is less than a predetermined value is blocked; when detecting that the optical signal is blocked, determining the input body and the The distance between the upper surfaces of the keyboard is less than a predetermined value.

Specifically, the determination method may be the light detection method shown in FIG. 3 or the camera detection method shown in FIG. 4.

In the light detecting mode shown in FIG. 3, the light source 11 and the light receiver 23 are respectively disposed on both sides of the keyboard 21, and the light signal emitted by the light source 22 passes parallel to the upper surface of the keyboard, and finally reaches the light receiver 23. Of course, the optical signal may also pass through the upper surface of the keyboard in parallel, but at a certain angle (small angle) with the upper surface of the keyboard, and then reach the optical receiver 23. Thus, assuming that the distance between the optical signal and the upper surface of the keyboard is a predetermined value, when the distance between the input body and the upper surface of the keyboard is less than the predetermined value, the optical signal will be blocked by the input body, and the optical receiver 23 cannot receive the optical signal. In the case of the optical signal, it can be determined that the distance between the input body and the upper surface of the keyboard is less than the predetermined value; otherwise, if the optical receiver 23 can receive the optical signal, it is determined between the input body and the upper surface of the keyboard. The distance is greater than the predetermined value.

In the camera detection method shown in FIG. 4, a camera 24 and a shielding plate 241 opposite to the camera 24 are respectively disposed on both sides of the keyboard 21, and the camera 24 captures the opposite shielding plate 241 from the side of the keyboard through the upper surface of the keyboard. The principle of the camera 24 capturing the shutter 241 is also to receive the light signal reflected by the shutter 241. Therefore, it is assumed that the distance between a reflected light signal and the upper surface of the keyboard is a predetermined value, and the distance between the input body and the upper surface of the keyboard is smaller than When the predetermined value is described, the reflected optical signal is blocked by the input body, and the camera 24 receives the optical signal reflected by the input body, so that the background image including the input body can be captured. Therefore, by judging the difference of the captured background image (ie, the initial background image when there is no input body and the background image when there is an input body), it is determined whether the distance between the input body and the upper surface of the keyboard is less than the predetermined value; On the other hand, when the input body is away from the upper surface of the keyboard, the camera 24 cannot capture the input body, and only the background image including only the shielding plate 241 can be captured. Therefore, by setting the height of the shutter and the camera, you can Based on the captured image of the camera, it is determined whether the distance between the input body and the upper surface of the keyboard is less than the predetermined value.

(2) Capacitance detection mode: detecting a change in the electric quantity of the conductive layer provided on the keyboard; determining that the distance between the input body and the upper surface of the keyboard is less than a predetermined time when detecting that the change in the electric quantity satisfies a predetermined condition value. At this time, the capacitive sensor detection method shown in FIG. 5 can be used: a conductive layer 25 is disposed on the keyboard 21, and when the input body (such as a user's finger) comes into contact with the upper surface of the keyboard or the input body (such as a user's finger) approaches When the upper surface of the keyboard, the weak current transmission between the human body and the conductive layer 25 is caused, thereby causing a change in the electric quantity of the conductive layer 25 (such as a decrease in the amount of electricity); by detecting the change in the amount of electricity generated by the input body, and further When the change satisfies the predetermined condition, it is judged that the distance between the input body and the upper surface of the keyboard is smaller than the predetermined value.

Step 12: When the distance between the input body and the upper surface of the keyboard is less than the predetermined value, and the button signal is not generated, the moving track of the input body on the upper surface of the keyboard is collected.

Here, as shown in FIG. 6, for example, this embodiment can set a camera on a computer (FIG. 6 takes a portable notebook as an example, and the principle is the same for other types of computers), the camera (the circle in FIG. 6 represents the same) The camera is placed above the keyboard (such as directly above or above) to capture the entire upper surface of the keyboard. Here, the step of collecting the movement trajectory of the input body on the upper surface of the keyboard is: when the input body (such as a finger) moves on the upper surface of the keyboard, the camera recognizes the collected image, and obtains an input. The position coordinates of the body, and then the movement trajectory of the input body is calculated according to the position coordinates. Of course, those skilled in the art can understand that the embodiment of the present invention can also collect the trajectory of the input body on the upper surface of the keyboard by other means.

Step 1 3: Generate an input command according to the movement track. The movement of the computer's display content. Cursor control at this time with the usual notebook touchpad

The input control of (touchpad) is similar: by moving the input body on the surface of the keyboard, the cursor of the mouse is displayed on the computer to display the motion track on the desktop. For example, according to the moving direction, speed and distance of the input body on the keyboard surface, the moving direction, speed and distance of the cursor on the display desktop are controlled accordingly, thereby implementing a cursor control command to the computer through the keyboard pointing operation, for controlling the cursor The purpose of the move.

The input command described in this embodiment may also be a gesture command. For example, when the movement track of the input body on the keyboard is a closed circle, a gesture for locking the screen is generated. When the movement of the input body on the keyboard is an "X" shape, a gesture command for closing the current window is generated.

In the above process, the terminal has a keyboard key input mode and a keyboard pointing input mode at the same time, and the distance between the input body and the upper surface of the keyboard is less than the predetermined value, and the button signal is not generated. In the condition, the terminal operates according to the keyboard pointing input mode, and generates an input command according to the moving track. If, in the above process, the input body presses any button on the keyboard and generates a corresponding button signal, the terminal will operate in accordance with the normal keyboard key input mode to receive and process the button signal.

In this embodiment, when the terminal performs the finger input, the image collection unit (such as the camera;) is turned on; and when the terminal performs the key input, the image collection unit (such as the camera) and the touch keyboard detection system are turned off to save Terminal power consumption. Of course, if the power consumption problem is not considered, the image collection unit can always work, but the terminal does not perform the conversion of the movement track and the input command when there is no finger input.

In this embodiment, the physical switch mode can also be used to control the terminal to switch between the keyboard key input mode and the keyboard finger input mode, so that the terminal works only in one mode at the same time. At this time, before the step 11 above, the embodiment further includes:

Step 10: Receive a control signal for instructing to enter a keyboard pointing input mode; and according to the control signal, controlling the terminal to enter the keyboard pointing input mode.

Here, the above control signal is input through a physical switch. The physical switch can be an additional manual dial switch or push button switch that controls the terminal to enter different keyboard input modes by dialing in different directions or pressing/pressing the switch. The physical switch can also be implemented by using a light detection mode or a capacitance detection method similar to the detection of the distance between the input body and the upper surface of the keyboard in the above step 11: Referring to FIG. 10 and FIG. 11, the terminal is pre- Set the two palm rest areas 31, 32 (the two palm rest areas are set under the keyboard, that is, the two palm rest areas are set on the host between the keyboard and the user), and the first contact body 33 and the first palm are judged. Whether the distance of the bracket region 31 and the distance between the second contact body 34 and the second palm rest region 32 are less than a preset threshold value (the two contact bodies may be two palms/wrists of the user); When the distance between the first palm rest area 31 and the first palm rest area 31 is less than the preset threshold value, and the distance between the second contact body 34 and the second palm rest area 32 is also less than the preset threshold value, the keyboard input mode is automatically switched to the keyboard key input. Mode; when only one contact body (contact body 33 or contact body 34) and the corresponding one of the palm rest area (the palm rest area 31 or the palm rest area 32) are less than a preset threshold, the automatic switching keyboard input mode is Keyboard pointing input mode formula. In this way, when When the user puts both hands on the two palm rest areas on the keyboard, the terminal will enter the keyboard key input mode; when the user only places one hand on a palm rest area on the keyboard, the terminal will enter the keyboard pointing input mode. The contact body here is different from the aforementioned input body, and the contact body is controlled to enter the keyboard key input mode by contact with the palm rest area. In practical applications, the contact body may be the user's wrist; the aforementioned input body and the upper surface of the keyboard Contact or not is a control condition of the trajectory set. In practical applications, the input body is usually a user's finger or a stylus.

In this embodiment, after the computer enters the keyboard pointing input mode, the image gathering unit (such as a camera) is turned on; after the computer exits the keyboard pointing input mode, the camera and the touch keyboard detecting system are turned off (or only one of them is turned off), Save equipment power consumption. Of course, if the problem of power consumption is not considered, the image collection unit can always work, but the terminal does not perform the conversion of the movement track and the input command when there is no finger input.

After the control terminal enters the keyboard pointing input mode through the physical switch, the embodiment may further receive a button signal generated after the button on the keyboard is pressed, and perform a corresponding operation according to the button signal.

Specifically, as an embodiment, in this embodiment, a button signal generated when any button on the keyboard is pressed is received, and after receiving the button signal, a left mouse button operation is performed at a current position of the cursor. The left mouse button operation includes a left click and a left button double click operation, for example, if the button signal is received only once within a predetermined time, a left mouse click operation is performed; if the button is received twice within a predetermined time When the button signal is pressed, the left mouse button double click operation is performed. Here, if the button signal is continuously received, the mouse drag operation may be performed according to the button signal, that is, the object at the cursor position is dragged when the button signal is initially received.

As another embodiment, in this embodiment, one (or one type of) button may be preset to correspond to the left mouse button, and the other (or another type) button is set to correspond to the right mouse button. In this way, after receiving the button signal generated by the one (or one type of) button, performing a left mouse button operation at the current position of the cursor; after receiving the button signal generated by the other (or another type) button , Perform the right mouse button operation at the current position of the cursor. Similarly, the left mouse button operation also includes a left click and a double click operation, and the right mouse button operation also includes a right click and a double click operation. If the button signal generated by the one (or one type) button is continuously received, the mouse drag operation can also be performed according to the button signal generated by the one (or one type) button.

As can be seen from the above, this embodiment has the following advantages:

1) Compared to the traditional portable area, the upper surface of the keyboard is used as the keyboard input area. The touchpad input of the notebook, the upper surface of the keyboard of the embodiment can provide a larger input area, and thus can facilitate the input operation of the user.

2) Compared with the method of only collecting the moving track by the camera and controlling the movement of the cursor, the embodiment can provide the input accuracy and avoid the problem of input misoperation, because the prior art only passes the camera. The movement path of the input body, for example, when the user wants to control the right movement of the mouse, moves the input body to the right to attempt to input a trajectory that moves to the right. Since the user action usually has a "reciprocating" feature, it is customary to return the input body to the initial position after moving the input body to the right. In this case, the camera cannot determine when to start the collection and when to stop the collection movement, so the camera may collect a reciprocating movement trajectory that does not match the trajectory that the user wants to input to the right. In this embodiment, when the user wants to perform keyboard pointing input, the input body approaches or touches the upper surface of the keyboard and does not generate a button signal, and the set of the moving track is triggered at this time; when the user wants to stop the input, the input body is input. Away from the upper surface of the keyboard, the stop movement trajectory set can be triggered, so that the trajectory collected by the 符合 conforms to the user's expectation, and the problem of input misoperation is reduced.

Further, the terminal in this embodiment may further include a display unit, and the input method may further add an image of the input body to the display image by superimposing the display manner. Fig. 7 shows an application scenario of the above-described superimposed display processing, and when the user operates on the upper surface of the keyboard by the hand, an image including the control of the user's hand directly to the operation target can be seen on the display unit. In this case, when the input method of the embodiment is used to collect the moving track of the input body on the upper surface of the keyboard, the method further includes:

Step 21: The set includes the first image of the input body.

Here, the image capturing unit 71 may be used to collect an image of the input body (such as the user's hand 72 in FIG. 7), position the input body, and analyze the motion of the input body. It is also possible to control the image collection unit 71 to collect the first image including the input body only when the distance between the input body and the upper surface of the keyboard is less than a predetermined value and the key signal is not generated.

When the image collection unit 71 performs image collection on the input body, the image collected in the image includes a background image, such as a keyboard image, in addition to the input body. In this embodiment, the image collected by the image collection unit 71 may be directly used as the first image; the image collected by the image collection unit 71 may be further processed to filter out the background image, and only the image is retained. An image of the input body as the first image.

Step 22: Add the first image to an original display image of the display unit. Here, the original display image may be a real image on the desktop, such as a shortcut icon or a window on the desktop, or may be a virtual content generated by the terminal, for the user to operate and observe, such as a picture to be operated by the user.

Here, when the image of the input body is added to the original display image, the original display image may be controlled to be correspondingly changed according to the motion of the input body, for example, according to the movement trajectory of the input body. The drag mode changes the position of the original display image, and changes the size of the original display image. For another example, the image collection unit collects the input body and draws an "X" on the surface of the keyboard. At this time, the image of the input body is synchronously displayed on the display unit, and the input body draws an "X" on the current window. The action is displayed, and then the corresponding current window close command is generated according to "X" to close the current window. Further, the moving track itself can be superimposed and displayed on the original display image, that is, the "X" type moving track is displayed in the window until the user ends the input.

Finally, based on the input method of the terminal in the foregoing embodiment, the embodiment provides a terminal. As shown in FIG. 8, the terminal includes:

a keyboard, the keyboard comprising at least one button;

When the capacitance detection mode is used, the first determining unit includes:

a first detecting unit, configured to detect a change in the amount of the electric quantity of the conductive layer disposed on the keyboard; and a third determining unit, configured to determine the input body and the keyboard when detecting that the change in the electric quantity meets a predetermined condition The distance between the surfaces is less than the predetermined value.

When the capacitance detecting method is used, a structure of the keyboard of the terminal in this embodiment is as shown in FIG. 9a. At least one button is mounted on the circuit board 91. The circuit board is used to generate a button signal when the button is fully pressed. The specific principle is the same as that of the ordinary keyboard, and details are not described herein. Only one button is shown in Figure 9a. The button includes a plastic keycap 92, an elastic conductive rubber member 93, and a button holder 96 (for example, an X-type button holder;). In this embodiment, the inner surface of the key cap 92 is covered with a first conductive layer (such as a plated metal layer) 95, and the upper surface of the circuit board 91 is covered with a second conductive layer 94. The upper end of the elastic conductive rubber member 93 is connected to the first conductive layer 95, and the lower end is connected to the second conductive layer 94. The upper end of the button holder 96 is connected to the key cap 92, and the lower end is connected to the bottom plate located under the circuit board 91. The second conductive layer 94 is electrically connected to the first conductive layer 95 through the elastic conductive rubber member 93. The second conductive layer 94 is connected to a first detecting unit (such as an IC), and the first detecting unit is configured to detect a change in the amount of electricity on the second conductive layer 94. When the input body (such as a user's finger) comes into contact with the outer surface of the keycap 92, the amount of electricity on the first conductive layer 95 and the second conductive layer 94 changes, and the third determining unit can determine the input according to the change in the amount of electricity. The body is in contact with the upper surface of the keyboard or the distance therebetween is less than a predetermined value.

In Fig. 9a, since each of the first conductive layers 95 on the keycap of each of the keys is connected to the second conductive layer 94 of the circuit board 91 through the elastic conductive rubber member, it is only necessary to provide one and the second conductive layer 94. The connected first detecting unit can detect the contact between the input body and any button, and does not need to set a first detecting unit for each button, thereby saving hardware cost and simplifying structural design.

It can be seen that the conductive layer disposed on the keyboard comprises: a first conductive layer, a second conductive layer and a conductive connection. Wherein, the first conductive layer 95 is exemplified by a metal layer, and the setting manner comprises: the key cap itself is a metal; or the key cap itself is a painted metal; or the metal layer is placed under the plastic key cap; or the metal layer is placed Painted plastic under the key cap.

Similarly, the conductive connecting portion can also use the keyboard bracket. A structure of the keyboard of the terminal in this embodiment can also be as shown in FIG. 9b. Wherein, at least one button is mounted on the circuit board 91, and the circuit board is configured to generate a button signal when the button is fully pressed. Only one button is shown in Figure 9b. The button includes a plastic key cap 92, an elastic rubber member 93 and a conductive button bracket 96 (specifically, a metal bracket or a metal plated plastic bracket). The upper end of the elastic rubber member 93 is connected to the inner surface of the key cap 92, and the lower end is connected to the circuit board 91. The upper surface is connected. The inner surface of the keycap 92 is covered with a first conductive layer (such as a plated metal layer) 95, and a second conductive layer 94 (such as a metal shoe) is disposed under the circuit board 91. The upper end of the conductive button holder 96 is connected to the first conductive layer 95, and the lower end is connected to the second conductive layer 94. The second conductive layer 94 is electrically connected to the first conductive layer 95 through the conductive button holder 96. The second conductive layer 94 is connected to a first detecting unit (such as an IC), and the first detecting unit is configured to detect a change in the amount of electricity on the second conductive layer 94. When the input body (such as a user's finger) comes into contact with the outer surface of the keycap 92, the amount of electricity on the first conductive layer 95 and the second conductive layer 94 changes, and the third determining unit can determine the input according to the change in the amount of electricity. The body is in contact with the upper surface of the keyboard or the distance therebetween is less than a predetermined value. Similarly, in FIG. 9b, since each of the first conductive layers 95 on the keycap of each button is connected to the second conductive layer 94 through the conductive button holder, only one of the second conductive layers 94 needs to be electrically connected. The first detecting unit can detect the contact between the input body and any button, and does not need to provide a first detecting unit for each button, thereby saving hardware cost and simplifying structural design. Of course, if the cost is not considered, in the embodiment shown in Figures 9a and 9b, a plurality of second conductive layers and a plurality of first detecting units may also be provided.

When the optical detection mode is used, the first determining unit includes:

a second detecting unit, configured to detect whether an optical signal whose distance from the upper surface of the keyboard and the upper surface is less than a predetermined value is blocked;

Preferably, the terminal has a keyboard pointing input mode and a keyboard key input mode, and the terminal further includes:

Preferably, the input command is a cursor control command, and the terminal further includes:

And a second control unit, configured to: after the terminal enters the keyboard pointing input mode, receive the button signal, and perform a left mouse click operation at a current position of the cursor according to the button signal.

Preferably, in the terminal in this embodiment, the image collection unit is further configured to collect the first image including the input body. At this time, the terminal further includes:

Display unit;

In summary, the embodiments of the present invention provide a terminal input method and a terminal, which can input a control command for a cursor and input a corresponding mouse operation.

The above description is only an embodiment of the present invention, and it should be noted that those skilled in the art can also make some improvements and retouching without departing from the principles of the present invention. These improvements and retouchings should also be considered. It is within the scope of protection of the present invention.

Claims

Claim

An input method, applied to a terminal having a keyboard and an image collection unit, wherein an upper surface of the keyboard is located in a collection area of the image collection unit, and the keyboard includes at least one button, wherein The input method includes:

Determining whether a distance between the input body and the upper surface of the keyboard is less than a predetermined value; determining whether the at least one button generates a button signal;

An input command is generated based on the movement trajectory.

2. The input method according to claim 1, wherein the step of determining whether the distance between the input body and the upper surface of the keyboard is less than a predetermined value comprises:

3. The input method according to claim 1, wherein the step of determining whether the distance between the input body and the upper surface of the keyboard is less than a predetermined value comprises:

The input method according to claim 1, wherein the terminal has a keyboard pointing input mode and a keyboard key input mode, and whether the distance between the determining input body and the upper surface of the keyboard is less than a predetermined value Before the step, it also includes:

And controlling the terminal to enter the keyboard pointing input mode according to the control signal.

The input method according to claim 1, wherein the input command is a cursor control command.

6. The input method according to claim 4, wherein

The input command is a cursor control command;

After the terminal is controlled to enter the keyboard pointing input mode, the input method further includes: Receiving the button signal, and performing a left mouse button operation at a current position of the cursor according to the button signal.

The input method according to any one of claims 1 to 6, wherein the terminal includes a display unit, and the input method is further performed when collecting a movement trajectory of the input body on an upper surface of the keyboard Includes:

The set includes a first image of the input body;

The first image is added to an original display image of the display unit.

8. A terminal, comprising:

a keyboard, the keyboard comprising at least one button;

The terminal according to claim 8, wherein the first determining unit comprises: a first detecting unit, configured to detect a change in a quantity of a conductive layer disposed on the keyboard; and a third determining unit, configured to detect When the change in the electric quantity satisfies the predetermined condition, it is judged that the distance between the input body and the upper surface of the keyboard is smaller than the predetermined value.

The terminal according to claim 8, wherein the first determining unit comprises: a second detecting unit, configured to detect an optical signal whose distance from the upper surface of the keyboard is less than the predetermined value Whether it is occluded;

The terminal according to claim 8, wherein the terminal has a keyboard pointing input mode and a keyboard key input mode, and the terminal further includes:

12. The terminal of claim 11, wherein The input command is a cursor control command;

The terminal further includes:

The terminal according to any one of claims 8 to 12, wherein

The terminal further includes:

Display unit;