CN103645848B - A terminal control method and terminal control device based on ultrasonic waves - Google Patents

Abstract

The invention discloses a terminal control method and a terminal control device based on ultrasonic waves. The terminal control method comprises the following steps: the terminal receives ultrasonic waves emitted by at least two ultrasonic emission rods of the control body; detecting the rotation angle of the control body according to the time of receiving the ultrasonic waves and the position relation between the ultrasonic transmitting rods; when the rotation angle is detected to reach a threshold value, displaying a control menu on the terminal, and when the rotation angle reaches the corresponding angle range of the options in the control menu, highlighting the option corresponding to the rotation angle; and when the control body is detected to select the highlighted option, executing the highlighted option. And detecting the rotation angle of the control body by ultrasonic waves, and executing the target option according to the rotation angle to finish the control. The terminal control method and the terminal control device of the invention do not need to operate on the terminal, directly complete input through the control body, complete control, have simpler, more convenient and smoother operation and do not interfere with the handwriting process.

Description

A terminal control method and terminal control device based on ultrasonic waves

technical field

The present invention relates to the field of terminal control, in particular to an ultrasonic-based terminal control method and terminal control device.

Background technique

Ultrasonic positioning technology is relatively mature. Generally, an ultrasonic transmitter is installed on the object to be positioned, and several ultrasonic receivers are installed around the object. Positioning is performed by calculating the distance between the transmitter and each receiver. Multiple ultrasonic transmitters are installed on the object to be positioned, and multiple triangular conversion relationships are used to locate the object to be measured. The stylus of the ultrasonic positioning principle is also based on the above principle, and the implementation structure and algorithm will be slightly different, but the application principle is the same.

Existing mobile terminals also have abundant peripherals. For example, many smart phones have touch screen pens for inputting and controlling the smart phones. For computers, especially for many older beginners, handwriting input devices are also a fairly common tool. For learning tablet, stylus is a necessary equipment. Taking the handwriting board for learning as an example, the scope of application of the stylus is to write on ordinary paper or a handwriting board, and to track and recognize the handwriting through the ultrasonic receiver. Generally, it will be combined with the corresponding functional application to realize free writing on paper and the handwriting board And position click, through the receiving circuit, the signal received by the receiving element is amplified and filtered, and then output to the processing terminal, and the physical operation of handwriting and position click is converted into digital characters, patterns and specific position positioning.

However, the current stylus using the principle of ultrasonic positioning, the input area of the stylus is separated from the terminal display area, and the size of the input area, the distance between the input area and the terminal display area is not fixed, and the function of operating the terminal display area in the process of handwriting , it may be necessary to operate directly on the display screen by hand or pen, which interrupts the handwriting process experience. Some simple functional operations cannot be realized through some simple actions on paper with the stylus, because the stylus is in the handwriting process. The terminal is recognized and judged as handwriting, and some specially defined symbol operations can only be operated on the terminal device because it cannot be scribbled in the application of paper handwriting, as a formal note.

Contents of the invention

The invention proposes a terminal control method and a terminal control device for controlling the terminal according to the rotation angle of the rotation angle of the control body detected by ultrasonic waves.

In order to realize above-mentioned design, the present invention adopts following technical scheme:

On the one hand, an ultrasonic-based terminal control method is adopted, including:

The terminal receives the ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body;

Detect the rotation angle of the control body according to the time when the ultrasonic waves are received and the positional relationship between the ultrasonic emitting rods;

When it is detected that the rotation angle reaches the threshold value, the control menu is displayed on the terminal, and when the rotation angle reaches the corresponding angle range of the options in the control menu, the option corresponding to the rotation angle is highlighted;

Executes the highlighted option when it is detected that the highlighted option is selected by the control body.

Wherein, the detection of the rotation angle of the control body according to the time of receiving the ultrasonic waves and the positional relationship between the ultrasonic emitting rods includes:

Obtain the propagation time of the two ultrasonic waves according to the time difference between the time when the ultrasonic waves are received and the time when the ultrasonic waves are emitted;

Calculate the distance between the two ultrasonic emitting rods and the terminal from the propagation time of the two ultrasonic waves and the propagation speed of the two ultrasonic waves;

The rotation angle of the control body is calculated based on trigonometric functions through the distance between the two ultrasonic emitting rods and the distance between the two ultrasonic emitting rods and the terminal.

Wherein, the control menu is a circular menu, and the area of each option of the control menu is a fan-shaped area, or the control menu is a rectangular menu, and the area of each option of the control menu is a small rectangular area.

Wherein, the control body is a control body with a pen core, and the ultrasonic emitting rods are uniformly arranged on the outer circumference of the pen core.

Wherein, when the rotation angle reaches the corresponding angle range of the option in the control menu, the option corresponding to the rotation angle is highlighted, specifically:

When the rotation angle reaches the corresponding angle range of the options in the control menu, it is judged whether the option corresponding to the rotation angle is an executable option, and if yes, the option corresponding to the rotation angle is highlighted.

On the other hand, an ultrasonic-based terminal control device is used, including a control body and a terminal:

The control body includes a plurality of ultrasonic emitting rods, and the signals emitted by the plurality of ultrasonic emitting rods are covered by at least two signals at any angle of the control body;

The terminal includes:

The receiving unit is used for the terminal to receive the ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body;

An angle calculation unit is used to detect the rotation angle of the control body according to the time when the ultrasonic wave is received and the positional relationship between the ultrasonic emitting rods;

The menu display unit is used to display the control menu on the terminal when it is detected that the rotation angle reaches the threshold, and when the rotation angle reaches the corresponding angle range of the options in the control menu, highlight the option corresponding to the rotation angle;

The option executing unit is configured to execute the highlighted option when it is detected that the highlighted option is selected by the control body.

Wherein, the angle calculation unit includes:

The time calculation module is used to obtain the propagation time of two ultrasonic waves according to the time difference between the time of receiving the ultrasonic wave and the time of transmitting the ultrasonic wave;

The distance calculation module is used to calculate the distance between the two ultrasonic emission rods and the terminal by the propagation time of the two ultrasonic waves and the propagation velocity of the two ultrasonic waves;

The angle calculation unit is used to calculate the rotation angle of the control body based on trigonometric functions through the distance between the two ultrasonic emitting rods and the distance between the two ultrasonic emitting rods and the terminal.

Wherein, the control menu is a circular menu, and the area of each option of the control menu is a fan-shaped area, or the control menu is a rectangular menu, and the area of each option of the control menu is a small rectangular area.

Wherein, the control body is a control body with a pen core, and the ultrasonic emitting rods are uniformly arranged on the outer circumference of the pen core.

Wherein, when the rotation angle reaches the corresponding angle range of the option in the control menu, the option corresponding to the rotation angle is highlighted, specifically:

When the rotation angle reaches the corresponding angle range of the options in the control menu, it is judged whether the option corresponding to the rotation angle is an executable option, and if yes, the option corresponding to the rotation angle is highlighted.

The beneficial effect of the present invention is that: detect the rotation angle of the control body through ultrasonic waves, and correspond to different options in the control menu according to the change of the rotation angle. When the rotation angle reaches the target option for control, the rotation is suspended, and the target option is executed to complete the control. The terminal control method and the terminal control device of the present invention do not need to operate on the terminal, and directly complete the input and control through the control body, the operation is more convenient and smooth, and the handwriting process is not disturbed.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to the content of the embodiment of the present invention and these drawings without any creative effort.

Fig. 1 is a method flowchart of the first embodiment of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 2 is a method flowchart of the second embodiment of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 3 is a schematic diagram of distribution of ultrasonic emitting rods in a control body of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 4 is a schematic diagram of a rotation angle of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 5 is a method flowchart of a third embodiment of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 6 is a schematic diagram of a menu page of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 7 is a schematic diagram of another menu page of an ultrasonic-based terminal control method provided by an embodiment of the present invention.

Fig. 8 is a structural block diagram of a first embodiment of an ultrasonic-based terminal control device provided by an embodiment of the present invention.

Fig. 9 is a structural block diagram of a second embodiment of an ultrasonic-based terminal control device provided by an embodiment of the present invention.

detailed description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

Please refer to FIG. 1 , which is a method flowchart of the first embodiment of an ultrasonic-based terminal control method provided by an embodiment of the present invention. The terminal control method of this embodiment is mainly used for terminal control with pen-shaped peripherals, such as smart phones with touch screen pens, computers with handwriting peripherals, especially writing pads for children's learning. The control body controls various terminals. As shown in the figure, the ultrasonic-based terminal control method includes:

Step 101: The terminal receives ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body.

The terminal periodically receives ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body for detecting the rotation angle of the control body.

Step 102: Detect the rotation angle of the control body according to the time when the ultrasonic waves are received and the positional relationship between the ultrasonic emitting rods.

According to the relationship between time, speed and distance, the calculation of the rotation angle is carried out through trigonometric functions on the basis of the known positional relationship between the ultrasonic emitting rods.

Step 103: When it is detected that the rotation angle reaches the threshold, display the control menu on the terminal, and when the rotation angle reaches the corresponding angle range of the options in the control menu, highlight the option corresponding to the rotation angle.

During the operation of the control body, it is possible to detect movement changes, but this change may only be a translation change during the writing process. At this time, there is no need to respond to this change, but when the angle of the detected rotation change reaches the threshold , the control menu is displayed on the terminal, and different options in the control menu correspond to different rotation angles. When the rotation of the control body reaches the corresponding rotation angle, the option is highlighted.

Step 104: When it is detected that the highlighted option is selected by the control body, execute the highlighted option.

In order to reduce misoperation, it is necessary to select the highlighted option for the control body to confirm the control option. The specific judgment operation can be that the control body stops rotating for a preset time, detects continuous changes in the direction of rotation, and distance Variations beyond set thresholds and so on.

In summary, the present invention detects the rotation angle of the control body through ultrasonic waves, and corresponds to different options in the control menu according to the change of the rotation angle. When the rotation angle reaches the target option for control, the rotation is suspended, and the target option is executed to complete the control. The terminal control method of the present invention does not need to operate on the terminal, and directly completes the input and control through the control body, the operation is more convenient and smooth, and there is no interference in the handwriting process.

Please refer to FIG. 2 , which is a method flowchart of a second embodiment of an ultrasonic-based terminal control method provided by an embodiment of the present invention. Compared with the first embodiment provided by this method, this embodiment further illustrates the calculation process of the rotation angle. As shown in the figure, the ultrasonic-based terminal control method includes:

Step 201: The terminal receives ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body.

As shown in Figure 3, in order to ensure that at least two ultrasonic waves can be received at each angle, there are at least three ultrasonic transmitting rods with emission angle requirements, in which multiple transmitting rods are required to transmit signals that can be received simultaneously at the receiving end The number should be within the error range of the identified rotation angle, determined according to the ultrasonic emission and reception accuracy, here the best is 3, the emission angle of each ultrasonic emission rod is 240°, and the three ultrasonic emission rods are along the The perimeter of the control volume is uniformly distributed. The control body composed of three ultrasonic emitting rods is covered by the signals of at least two ultrasonic emitting rods in each direction.

Step 202: Obtain the propagation time of two ultrasonic waves according to the time difference between the time when the ultrasonic waves are received and the time when the ultrasonic waves are emitted.

Simultaneously with the emission of ultrasonic waves, an infrared signal is emitted to synchronize the time. The infrared signal is transmitted at the speed of light, and the time difference can be ignored, that is, the time of receiving the infrared signal is used as the time of transmitting the ultrasonic wave, which is the starting point of timing; the ultrasonic wave travels at the speed of sound, and the speed is relatively slow, and the time of receiving the ultrasonic wave is used as the end point of timing , the time difference between the two is the propagation time of the ultrasonic wave, and the positions of the two emitting rods can be located according to the difference in the emission frequency or the difference in the encoding method.

Step 203: Calculate the distance between the two ultrasonic emitting rods and the terminal according to the propagation time of the two ultrasonic waves and the propagation speed of the two ultrasonic waves.

According to the quantitative relationship of time, speed and distance, the distance between the launch rod and the terminal can be easily obtained with the propagation speed and propagation time of ultrasonic waves.

Step 204: Calculate the rotation angle of the control body based on a trigonometric function through the distance between the two ultrasonic emitting rods and the distance between the two ultrasonic emitting rods and the terminal.

As shown in Figure 4, where A represents the receiving end of the terminal, O represents the center of the control body, r represents the distance from O to the launch rod, a represents the distance between the two launch rods; C and D represent the two E and B indicate the corresponding positions of the two launch rods after they rotate a certain angle, L represents the distance from O to A, L1, L2, L3, and L4 respectively represent the distance between the two launch rods before and after a certain angle to the receiving end Distance, where α, β, ω, μ, δ, θ represent their angles respectively, and β is a fixed value of 30°. L1, L2, L3, L4 have been obtained in the previous steps, the angle between the radii of the two launch rods is a fixed value of 120°, the length of BE in △OBE is a=2r*sin60°; in △ABE by the law of cosines cosα=(L1 ² +a ² -L3 ² )/2a*L1, so as to calculate the angle value of α; in △OBA, L=L1 ² +r ² -2L1*r*cos(α+β) by the law of cosines ;Similarly, △ODA and △DBA calculate the angle values of μ and δ by the law of cosines, and further can get θ=360°-δ-μ. In isosceles △OBD, ω=180°-2θ, ω is the rotation angle. Through the above steps, the basic angle can be derived. On this basis, some displacement interference compensation is required, but they are all based on the above principles. For one of the two launchers in the rotation process, one of them is switched to the other launcher, it can also be divided and judged based on this, and finally the total angle is synthesized. In order to further improve the calculation accuracy, it can be compensated for multiple receivers. , to reduce the error, and the angle is more accurate.

Step 205: When it is detected that the rotation angle reaches the threshold, display the control menu on the terminal, and when the rotation angle reaches the corresponding angle range of the options in the control menu, highlight the option corresponding to the rotation angle.

In order to reduce misoperations during use, set a threshold to activate the control menu, and ignore small changes in angles caused by translation during operations such as writing, pulling up and down. Respond until the rotation angle reaches a certain size. The correspondence between the options in the specific control menu and the rotation angle can be flexibly set according to the actual number of options. For example, there are 6 options in a certain operating state, and the control can be set. Every 30° corresponds to an option, for more options, the corresponding angle range is smaller, and vice versa. And clockwise or counterclockwise in the rotation process can also correspond to the opposite change direction highlighted in the control menu.

Step 206: When it is detected that the highlighted option is selected by the control body, execute the highlighted option.

When no angle change is detected within the preset period, it is considered that the rotation stops, and the highlighted option is executed.

The control body is a control body with a pen core, and the ultrasonic emitting rods are uniformly arranged on the outer circumference of the pen core.

The control body of this design has a good effect especially when used for writing boards, and can directly save the written content in the storage device of the writing board when writing on paper; of course, for computers equipped with handwriting input devices There are also good effects.

In summary, the present invention utilizes the emission angles of the three emission rods, and at least the emission signals of at least two emission rods can be received by the ultrasonic receiving end at any angle, and can be positioned according to different emission frequencies or different encoding methods. If the position of two of the launch sticks is found, and the error is much smaller than the distance between the launch sticks, the rotation direction and angle of the pen can be calculated more accurately. Based on the rotation direction and angle, the control menu can be displayed on the receiving terminal screen. Through the pause time and whether to click to determine the function operation to be selected, without changing the handwriting of useful information on the paper, and without additional operations on the terminal screen, the function operation of the input information can be realized, which speeds up the electronic handwriting. Efficiency, optimizing the experience in the handwriting process. The operation is easier and smoother, and there is no interference in the process of handwriting.

Please refer to FIG. 5 , which is a method flowchart of a third embodiment of an ultrasonic-based terminal control method provided by an embodiment of the present invention. Compared with the second embodiment provided by this method, this embodiment further illustrates the display mode of the control menu and the pre-order judgment of the highlighted display of the menu. As shown in the figure, the ultrasonic-based terminal control method includes:

Step 301: The terminal receives ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body.

Step 302: Obtain the propagation time of two ultrasonic waves according to the time difference between the time when the ultrasonic waves are received and the time when the ultrasonic waves are emitted.

Step 303: Calculate the distance between the two ultrasonic emitting rods and the terminal according to the propagation time of the two ultrasonic waves and the propagation speed of the two ultrasonic waves.

Step 304: Calculate the rotation angle of the control body based on the trigonometric function based on the distance between the two ultrasonic emitting rods and the distance between the two ultrasonic emitting rods and the terminal.

Step 305: When it is detected that the rotation angle reaches the threshold, display the control menu on the terminal, and when the rotation angle reaches the corresponding angle range of the options in the control menu, determine whether the option corresponding to the rotation angle is an executable option, if yes, Highlight the option for that rotation angle.

In some states of the terminal, some options in the control menu cannot be executed, so they are not highlighted. For example, when using a stylus to write on the tablet, if the edited content is not selected, copying, For operations such as cutting, it will not be highlighted directly at this time.

Wherein, as shown in FIG. 6 , the control menu is a circular menu, and the area of each option of the control menu is a fan-shaped area.

Furthermore, the number of options in the control menu is relatively small, and there is no need to lay out the menu in a circle, and a fan-shaped menu can be selected as the overall interface of the menu.

Preferably, as shown in FIG. 7 , the control menu is a rectangular menu, and the area of each option of the control menu is a small rectangular area.

Step 306: When it is detected that the highlighted option is selected by the control body, execute the highlighted option.

To sum up, the present invention further limits the pre-order judgment steps of highlighting to ensure more accurate operation. On the whole, the rotation angle of the control body is detected by ultrasonic waves, and the different options in the control menu are corresponding to the changes in the rotation angle. When the rotation angle reaches the control target option, the rotation is suspended, the target option is executed, and the control is completed. The terminal control method of the present invention does not need to operate on the terminal, and directly completes the input and control through the control body, the operation is more convenient and smooth, and there is no interference in the handwriting process.

The following is an embodiment of an ultrasonic-based terminal control device provided by an embodiment of the present invention. The embodiment of the ultrasonic-based terminal control device is based on the same idea as the above-mentioned embodiment of the ultrasonic-based terminal control method. For the details not described in detail in the embodiment of the ultrasonic-based terminal control device, you can refer to the above-mentioned ultrasonic-based terminal control method. Example.

Please refer to FIG. 8, which is a structural block diagram of a first embodiment of an ultrasonic-based terminal control device according to the present invention. As shown in the figure, the ultrasonic-based terminal control device includes a control body 10 and a terminal 20:

The control body 10 includes a plurality of ultrasonic emitting rods 1, and the signals emitted by the plurality of ultrasonic emitting rods 1 have at least two signal coverages at any angle of the control body 10;

The terminal 20 includes:

The receiving unit 21 is used for the terminal to receive the ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body;

Angle calculation unit 22, for detecting the rotation angle of the control body according to the time of receiving the ultrasonic waves and the positional relationship between the ultrasonic emitting rods;

The menu display unit 23 is used to display the control menu on the terminal when it is detected that the rotation angle reaches the threshold, and when the rotation angle reaches the corresponding angle range of the options in the control menu, highlight the option corresponding to the rotation angle;

The option executing unit 24 is configured to execute the highlighted option when it is detected that the highlighted option is selected by the control body.

Under the coordinated operation of the above-mentioned parts, the rotation angle of the control body is detected by ultrasonic waves, and the different options in the control menu are corresponding to the changes in the rotation angle. When the rotation angle reaches the control target option, the rotation is suspended, and the target option is executed to complete the control. . The terminal control device of the present invention does not need to operate on the terminal, and directly completes the input and control through the control body, the operation is more convenient and smooth, and there is no interference in the process of handwriting.

Please refer to FIG. 9 , which is a structural block diagram of a second embodiment of an ultrasonic-based terminal control device according to the present invention. As shown in the figure, the ultrasonic-based terminal control device includes a control body 10 and a terminal 20:

The control body 10 includes a plurality of ultrasonic emitting rods 1, and the signals emitted by the plurality of ultrasonic emitting rods 1 have at least two signal coverages at any angle of the control body 10;

The terminal 20 includes:

The receiving unit 21 is used for the terminal to receive the ultrasonic waves emitted by at least two ultrasonic emitting rods of the control body;

Angle calculation unit 22, for detecting the rotation angle of the control body according to the time of receiving the ultrasonic waves and the positional relationship between the ultrasonic emitting rods;

The menu display unit 23 is used to display the control menu on the terminal when it is detected that the rotation angle reaches the threshold, and when the rotation angle reaches the corresponding angle range of the options in the control menu, highlight the option corresponding to the rotation angle;

The option executing unit 24 is configured to execute the highlighted option when it is detected that the highlighted option is selected by the control body.

Wherein, the angle calculation unit 22 includes:

The time calculation module 221 is used to obtain the propagation time of two ultrasonic waves according to the time difference between the time of receiving the ultrasonic wave and the time of transmitting the ultrasonic wave;

The distance calculation module 222 is used to calculate the distance between the two ultrasonic emission rods and the terminal by the propagation time of the two ultrasonic waves and the propagation speed of the two ultrasonic waves;

The angle calculation unit 223 is configured to calculate the rotation angle of the control body based on a trigonometric function based on the distance between the two ultrasonic emitting rods and the distance between the two ultrasonic emitting rods and the terminal.

Wherein, the control menu is a circular menu, and the area of each option of the control menu is a fan-shaped area.

Preferably, the control menu is a rectangular menu, and the area of each option of the control menu is a small rectangular area.

Further, when the rotation angle reaches the corresponding angle range of the option in the control menu, the option corresponding to the rotation angle is highlighted, specifically:

When the rotation angle reaches the corresponding angle range of the options in the control menu, it is judged whether the option corresponding to the rotation angle is an executable option, and if yes, the option corresponding to the rotation angle is highlighted.

Under the cooperative work of the above-mentioned parts, the display mode of the control menu is further realized, and the calculation method of the rotation angle is explained. Generally speaking, the rotation angle of the control body is detected by ultrasonic waves, and the change in the rotation angle corresponds to the difference in the control menu. option, when the rotation angle reaches the target option of the control, the rotation is suspended, the target option is executed, and the control is completed. The terminal control device of the present invention does not need to operate on the terminal, and directly completes the input and control through the control body, the operation is more convenient and smooth, and there is no interference in the process of handwriting.

Those of ordinary skill in the art can understand that all or part of the steps for realizing the above-mentioned embodiments can be completed by hardware, and can also be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium, and the storage medium can include memory, disk or CD, etc.

The above content is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. limits.

Claims (8)

1. a terminal control method based on ultrasound wave, it is characterised in that including:

Terminal receives the ultrasound wave that at least two ultrasonic emitting rod of control volume is launched；

Rotation according to the position relationship detection control volume received between the time of ultrasound wave and ultrasonic emitting rod Gyration；

When detecting that the described anglec of rotation reaches threshold value, control menu at terminal demonstration, when the anglec of rotation reaches During to the corresponding angle scope of the option controlled in menu, it is highlighted the option that this anglec of rotation is corresponding；

When detecting that control volume selectes the option being highlighted, perform the option being highlighted；

Wherein, described basis receives the position relationship detection between the time of ultrasound wave and ultrasonic emitting rod The anglec of rotation of control volume, including:

It is ultrasonic that the time difference of the time according to the time and transmitting ultrasound wave that receive ultrasound wave obtains at least two The propagation time of ripple；

At least two is calculated by the propagation time of at least two ultrasound wave and the spread speed of at least two ultrasound wave Distance between ultrasonic emitting rod and terminal；

By the distance between at least two ultrasonic emitting rod and at least two ultrasonic emitting rod and terminal Between distance based on trigonometric function calculate control volume the anglec of rotation.

A kind of terminal control method based on ultrasound wave the most according to claim 1, it is characterised in that Described control menu is circular menu, and the region of each option controlling menu is a sector region, or Described control menu is rectangle menu, and the region of each option controlling menu is a little rectangular area.

A kind of terminal control method based on ultrasound wave the most according to claim 1, it is characterised in that Described control volume is the control volume with pen core, and described ultrasonic emitting rod is uniformly arranged on outside described pen core Circumference.

A kind of terminal control method based on ultrasound wave the most according to claim 1, it is characterised in that Described when the anglec of rotation reaches the corresponding angle scope controlling the option in menu, it is highlighted this anglec of rotation The option that degree is corresponding, particularly as follows:

When the anglec of rotation reaches the corresponding angle scope controlling the option in menu, it is judged that this anglec of rotation pair Whether the option answered is to perform option, is to be highlighted the option that this anglec of rotation is corresponding.

5. a terminal control mechanism based on ultrasound wave, it is characterised in that include control volume and terminal:

Described control volume, including multiple ultrasonic emitting rod, the signal that the plurality of ultrasonic emitting rod is launched Arbitrarily angled at control volume has at least two signal to cover；

Described terminal, including:

Receive unit, receive, for terminal, the ultrasound wave that at least two ultrasonic emitting rod of control volume is launched；

Angle calculation unit, for according to receiving the position between the time of ultrasound wave and ultrasonic emitting rod The anglec of rotation of relation detection control volume；

Menu display unit, for when detecting that the described anglec of rotation reaches threshold value, in terminal demonstration control Menu, when the anglec of rotation reaches the corresponding angle scope controlling the option in menu, is highlighted this rotation The option that angle is corresponding；

Option performance element, for when detecting that control volume selectes the option being highlighted, performs highlighted aobvious The option shown；

Wherein, described angle calculation unit, including:

Time Calculation module, for the time of the time according to the time and transmitting ultrasound wave receiving ultrasound wave Difference obtains the propagation time of at least two ultrasound wave；

Distance calculation module, is used for the propagation time by least two ultrasound wave and the biography of at least two ultrasound wave Broadcast the distance between speed calculation at least two ultrasonic emitting rod and terminal；

Angle calculation unit, for by the distance between at least two ultrasonic emitting rod and at least two Distance between ultrasonic emitting rod and terminal calculates the anglec of rotation of control volume based on trigonometric function.

A kind of terminal control mechanism based on ultrasound wave the most according to claim 5, it is characterised in that Described control menu is circular menu, and the region of each option controlling menu is a sector region, or Described control menu is rectangle menu, and the region of each option controlling menu is a little rectangular area.

A kind of terminal control mechanism based on ultrasound wave the most according to claim 5, it is characterised in that Described control volume is the control volume with pen core, and described ultrasonic emitting rod is uniformly arranged on outside described pen core Circumference.

A kind of terminal control mechanism based on ultrasound wave the most according to claim 5, it is characterised in that Described when the anglec of rotation reaches the corresponding angle scope controlling the option in menu, it is highlighted this anglec of rotation The option that degree is corresponding, particularly as follows:

When the anglec of rotation reaches the corresponding angle scope controlling the option in menu, it is judged that this anglec of rotation pair Whether the option answered is to perform option, is to be highlighted the option that this anglec of rotation is corresponding.