WO2013123694A1

WO2013123694A1 - Method and system applicable in multi-screen sharing for close range azimuth positioning and for file transmission

Info

Publication number: WO2013123694A1
Application number: PCT/CN2012/073724
Authority: WO
Inventors: 喻子达; 王袭; 赵向阳; 韩文; 朴成杰; 黄橙; 周林; 安娜
Original assignee: 海尔集团公司; 海尔集团技术研发中心
Priority date: 2012-02-21
Filing date: 2012-04-10
Publication date: 2013-08-29
Also published as: CN103259827A

Abstract

Provided in the present invention are a method and system applicable in multi-screen sharing for close range azimuth positioning and for file transmission, comprising the steps of: A. determining the orientations and tilt angles of sharing devices in a horizontal projection relative to a current sharing device; B. determining the direction pointed to in the horizontal projection by a touch track on a screen of the current sharing device, and the tilt angle of the screen; and, C. determining the sharing device matching the direction pointed to by the touch track and the tilt angle, and transmitting to the matched sharing device a selected file corresponding to the starting point of the touch track. Also provided in the present invention is the system for implementing the method applicable in multi-screen sharing for close range azimuth positioning and for file transmission. The touch track and the tilt angle are used to achieve the determination of a shared object and the transmission of the shared file, thus achieving convenient operation. When selecting an object and transmitting a file, only a pointing of the current sharing device towards a to-be-selected object, and sliding towards same on the screen of the current sharing device are required, thus conserving operation time.

Description

Description of the invention for short-distance azimuth positioning, file transmission method and system for multi-screen sharing

The present invention relates to a close range azimuth positioning, file transfer method and system for multi-screen sharing. Background technique

"Three-network convergence" refers to the three major networks of telecommunication networks, computer networks and cable television networks that realize comprehensive communication services including voice, data and images through technological transformation. "Three-network convergence" achieves the perfect integration of service level, control layer and bearer level through multi-screen convergence, enabling multi-screen sharing between different shared devices. However, the existing shared device needs to accurately select an icon representing another shared device when identifying the sharing request, and cannot meet the user's needs in terms of operation convenience. Summary of the invention

In view of this, the main object of the present invention is to provide a short-distance azimuth positioning and file transmission method and system for multi-screen sharing, which realizes determining a shared object and transmitting a shared file by touching a trajectory and a pitch angle, thereby achieving an improved operation. Convenience.

The short-distance azimuth positioning method applied to multi-screen sharing includes the following steps: A: determining various directions and pitch angles of each shared device projected on a horizontal plane with respect to the current shared device;

B: determining the direction in which the touch trajectory on the current shared device screen is projected in the horizontal plane, and the pitch angle of the screen;

C: A shared device matching the direction indicated by the touch track and the pitch angle of the screen is determined as a shared device to be communicated.

From above, the shared object can be determined by touching the trajectory and the tilt angle, and the operation is easy. When selecting an object, simply point the current shared device to the candidate object, and at the current total You can slide the device to the screen, which makes it easy to operate.

Optionally, step A includes:

Determining the spatial coordinates of the current shared device according to the strength of at least three shared devices having spatial coordinates and the current shared device communication signal;

The various directions and pitch angles of the respective shared devices projected on the horizontal plane with respect to the current shared device are determined according to the spatial coordinates of the current shared device and the spatial coordinates of the other shared devices.

From above, the calculation of the spatial coordinates of all the shared devices by the strength of the communication signal transmission determines the position of each shared device relative to the current shared device and the pitch angle of the current shared device screen.

Optionally, step A includes:

Obtaining image information including at least three shared devices having spatial coordinates and the current shared device;

Performing image analysis according to the spatial coordinates of the three shared devices to determine the spatial coordinates of the current shared device;

From above, all shared device space coordinates are obtained by image information, and the position of each shared device relative to the current shared device and the pitch angle of the current shared device screen are determined.

Optionally, the sharing device matched with the screen pitch angle in step C includes: a shared device in which the pitch angle of the shared device and the screen pitch angle have the smallest error.

From above, the fault tolerance of the increased operation is achieved by judging the shared device having the smallest direction error with the tilt angle of the screen.

Optionally, after step A, the method further includes: displaying, on the touch screen of the current shared device, the icons of the other shared devices according to respective directions of the horizontal plane projection in a direction corresponding to the beginning of the touch track. Optionally, after step A, the method further includes: on the touch screen of the current shared device, the icons of the shared devices that match the tilt angle of the screen are in a direction corresponding to the starting point of the touch track according to various directions of the horizontal plane projection Display.

From the above, the icons of other shared devices are visually displayed, and the prompts for the user operations are realized, so that the user selection is more intuitive.

Optionally, when there are two or more shared devices that match the direction indicated by the touch track and the tilt angle of the screen, the method further includes:

Determining a distance of the matched shared device to the current shared device;

Step C also determines shared devices corresponding to different distances according to different lengths of the touch trajectories.

From above, when there are multiple shared devices at the same pitch angle, the shared devices at different distances are selected by the sliding track, thereby achieving an increase in the accuracy of the selection.

A file transfer method applied to a multi-screen share, including the steps:

A: determining the directions and pitch angles of the respective shared devices projected on the horizontal plane with respect to the current shared device;

C: determining a shared device that matches the direction indicated by the touch track and the pitch angle, and transmits the selected file corresponding to the start point of the touch track to the matched shared device.

From above, the shared object is determined by the touch trajectory and the tilt angle, and the shared file is transmitted, thereby facilitating the operation. When selecting an object and selecting a file for transmission, simply point the current shared device to the object to be selected and slide it on the screen of the currently shared device to save operating time.

Optionally, after step A, the method further includes: on a touch screen of the current shared device, the icon of each shared device that matches the pitch angle of the screen is in a direction corresponding to each direction of the starting point of the touch track according to each direction of the horizontal plane projection Displayed on.

From above, the icons of other shared devices are visually displayed to facilitate the operation.

Optionally, matching the direction indicated by the touch track and the pitch angle of the screen When there are more than two shared devices, it also includes:

The present application further provides a system for implementing a short-range azimuth positioning method and a file transmission method for a shared device, including: a spatial coordinate receiving unit, configured to receive spatial coordinates of the shared device;

a coordinate system conversion unit, configured to determine, according to spatial coordinates of each shared device, various directions and pitch angles of other shared devices in a horizontal plane with respect to the current shared device; and a touch track collecting unit configured to collect a touch track, where the touch track starting point corresponds to For the selected file;

a gravity sensor, configured to determine a pitch angle presented by the current shared device; a projection unit configured to determine a projection direction of the touch track in a horizontal plane; a shared device identification unit configured to display a horizontal plane on the current shared device screen according to the touch track Determining the matching shared device by the direction indicated by the projection and the pitch angle of the currently shared device;

A shared file transfer unit that transfers the selected file to the matched shared device. From above, the shared object is determined by the touch trajectory and the tilt angle, and the shared file is transmitted, thereby facilitating the operation. When selecting an object and selecting a file for transmission, simply point the current shared device to the object to be selected and slide it on the screen of the currently shared device to save operating time. DRAWINGS

1 is a flowchart of a multi-screen shared file transmission method according to the present invention;

2 is a sub-flow chart of step S20 of the present invention;

3 is a schematic diagram of a location of a current shared device and a pointing device according to the present invention;

4 is a schematic structural view of a system of the present invention. detailed description

The detailed description of the short-range azimuth positioning, transmission method and system for multi-screen sharing according to the present invention will be described in detail below with reference to FIGS. In this example, the current shared device that initiates the sharing is a mobile terminal with a touch screen, such as a tablet computer such as a PAD, a laptop, a mobile phone, and the like. The shared device in the wireless network also includes a fixed-point device with wireless interconnection function, that is, a relatively fixed-position wireless terminal, such as a desktop computer, a television, a printer, a wireless router, or a device for positioning only functions such as a micro base station, a signal. Transmitter, etc.

Hereinafter, the present invention will be described by taking a PAD to initiate file transfer to a computer as an example.

Step S10: When the PAD enters the above wireless network, the PAD establishes a wireless connection with the pointing device. The pointing device acquires the model number of the PAD, assigns an IP address to the PAD and provides it to the PAD. The pointing device stores the model and IP address of the PAD in its attribute list.

The pointing device stores a list of attributes of all shared devices wirelessly connected thereto, the attribute list storing the model number of the shared device, the device icon, the IP address and the spatial coordinates, and the spatial coordinates of the pointing device itself. Wherein, when the PAD position changes, the attribute list is updated with corresponding space coordinates.

For the establishment of a wireless connection, which is a well-known technique, the process of establishing a wireless connection will not be described again.

Step S20: Calculate the spatial coordinates of the PAD based on the spatial coordinates of the pointing device, and add the spatial coordinates to the attribute list corresponding to the PAD stored by the pointing device, and list the attribute and the network. All shared devices are shared so that the spatial coordinates of each shared device within the network are known by other devices.

The coordinates of the pointing device are relatively fixed, so the measurement of the PAD space coordinates is performed based on the pointing device. As shown in FIG. 2, the measuring step of the spatial coordinates of the PAD includes: Step S201: Calculate a distance of at least three pointing devices to the PAD.

FIG. 3 is a schematic diagram showing the position of the PAD and the pointing device. In this embodiment, The spatial coordinates of the three fixed-point devices are a (Xa, Ya, Za), b (Xb, Yb, Zb) and c (Xc, Yc, Zc), and infrared, Bluetooth, WIFI are installed on the three fixed-point devices. Or wireless transceiver modules such as ultrasound. Correspondingly, a corresponding wireless transceiver module is also installed in the PAD. The distance of the signal transmission can be calculated according to the degree of attenuation of the wireless signal transmission. For example, according to the Received Signal Strength Indicator (RSSI) formula P _R = P _T /S ⁿ , the above three fixed point devices can be separately calculated. The distances of the PADs S _a , S _b and S _c . Wherein P _R represents the received power of the wireless signal of the receiver, _τ represents the transmission power of the wireless signal of the sender, S represents the distance between the wireless signal transmitting and receiving devices, η is the propagation factor, and the value of η in the air may be 3.

Step S202: Calculate the spatial coordinates of the PAD according to the above result and the spatial coordinates of the above three pointing devices.

Assuming that the spatial coordinates of the PAD are (Χ, Υ, Ζ), then the following formula can be derived according to the projection and the Pythagorean rule:

S _a =^XX _a ) ² +(YY _a ) ² +(Zz _a ) ² ,

with

Sc= xx _c y +(YY _c y ₊ (zz _c y.

a table of spatial coordinates (χ, γ, ζ) by D

Da

6

Replacement page (Article 26) Aj_― S3⁄4 a S _fl -2—Cj22—^3

A2 ⁼ S _c - Sb - one C22 - 3

A3—one Cg 12 Cg 2 ^ one Cg g

Cl2 ^C 13 — 3⁄4 y _a - y3⁄4 a 3⁄4

= one x _c b - y _c - z _c

C3i ^C 32 ^C 3S — x _ac - y _a Zc

The calculation of this step can be calculated by the PAD or by the pointing device. The parameters required to calculate the signal transmission distance and the parameters required to calculate the PAD space coordinates can be exchanged through the previously established wireless connection.

The calculation of the PAD coordinates can also be implemented by other positioning technologies, such as a camera set on a roof or a higher position to acquire a global image including the pointing device and the PAD, and image the position of the PAD for image positioning. In addition, the image acquired by one camera can obtain the projection of each shared device of horizontal projection, and the spatial coordinates of the PAD can be calculated by two or more cameras.

Step 203: Add the space coordinate to the attribute list corresponding to the PAD stored by the pointing device, and share the attribute list with all shared devices in the network, so that the spatial coordinates of each shared device in the network are Known by other devices.

Step S30: Determine the horizontal direction and the tilt angle of each of the other shared devices relative to the PAD according to the horizontal coordinate of the other shared devices in the network with respect to the PAD.

Wherein, the PAD is provided with a direction sensor, such as a geomagnetic sensor, and the spatial directions of the other shared devices determined are relatively unchanged, so that regardless of how the PAD rotates the screen in the horizontal plane, due to the presence of the direction sensor, PAD can correctly calibrate the direction of other shared devices.

As shown in FIG. 3, taking the PAD space coordinate as the origin, the coordinate coordinates of other shared devices relative to the PAD are obtained by coordinate transformation, and a direction is set as a reference direction, such as north. Then, according to the obtained spatial coordinates, the direction in which the respective shared devices in the horizontal plane take the PAD as an origin is determined.

Wherein, when the coordinate coordinates of the spatial coordinates of each shared device are converted, the spatial coordinates (Χi, Υ, Ζ) of the PAD are taken as the origin, and the shared device with the spatial coordinate is (Xi/^Z!)

Replacement page (Article 26) The coordinates after the transformation with respect to the PAD are (ΧΛΥ , Ζ ) , where

Xr X; Yi' =Yi- Y;

ZZ , and then according to the coordinates and trigonometric functions, the relative angle when projecting in the horizontal plane, that is, the direction in the horizontal plane, can be calculated. Similarly, the pitch angle with respect to the horizontal plane can be calculated according to the spatial coordinates, and will not be described again.

It can be seen that the above-mentioned spatial coordinates and the calculated horizontal plane direction and pitch angle are independent of the PAD orientation, that is, when positioning for each shared device, the positioning is always performed with reference to the spatial coordinates, that is, without the rotation of the PAD screen. Or changing in pitch, so that when the selected object is determined with the finger in the PAD linear touch trajectory, the shared device is selected when the linear touch trajectory always points to the shared device as the selected object regardless of how the PAD screen is placed.

In addition, for the calculation of the above directions, each shared device can be projected onto the horizontal plane for calculation, and the calculation of the direction of the touch trajectory of the user on the PAD described later can also be projected onto the horizontal plane.

Step S40: The user's finger slides in a straight line on the PAD touch screen. Since the direction sensor is built in the PAD, the direction of the user's linear touch track in the horizontal plane projection can be determined according to the reference direction of the direction sensor calibration. At the same time, according to the built-in gravity sensor of the PAD, the pitch angle of the PAD screen is determined.

Step S50: The shared device matched by the two parameters of the determined direction of the touch trajectory horizontal projection and the pitch angle of the PAD screen is used as a shared device selected by the user, that is, the selected object, and transmitted to the selected object. shared documents.

For example, if the user clicks on a file displayed by the PAD (indicating that the file is selected) and maintains the touch state, and then quickly slides the finger toward the computer direction, the PAD horizontally projects the pointed direction and the PAD screen according to the touch track of the fast sliding finger. The pitch angle determines the computer in the direction and the pitch angle as the selected object, and sends the file to the computer. In order to distinguish whether the sliding finger corresponds to moving the file within the PAD, or if the file is to be sent out, the speed of the finger sliding can be set. When a certain speed is reached (ie, the finger is swiped quickly), it is considered to be The selected file is sent out, otherwise it is only regarded as the file selected by the mobile within the PAD.

For example, the computer and the mobile phone that share the device as the receiver share the horizontal projection in the same direction. And the height of the computer is higher than the height of the PAD, and the height of the phone is lower than the height of the PAD. When the user selects the computer, the PAD is tilted upward (positive angle), and the PAD screen is linearly slid toward the direction of the computer. The built-in gravity sensor of the PAD determines its elevation angle with respect to the horizontal plane, thereby determining the selected The object is a computer; conversely, when the user selects the mobile phone, the PAD needs to be tilted downward (negative angle) to slide straight in the direction of the mobile phone on the PAD screen.

In addition, when the user clicks on a file and keeps the touch state, the icons of the respective shared devices are separately displayed on the PAD touch screen at the positions of the respective angles calculated above, so that the user can visualize the operation. Each shared device that matches the pitch angle of the screen may be displayed around the file in conjunction with the horizontal projection angle, preferably around the PAD screen, centering on the selected file. When the touch slide ends, the icons of the respective shared devices shown above are hidden.

If there are more than two shared devices that match the direction indicated by the touch track and the tilt angle of the screen, the distance between the matched shared device and the current shared device is further determined, and the corresponding touch track is set. The lengths correspond to different distances, so that the sharing devices corresponding to different distances can be further determined according to different lengths of the touch trajectories for matching. You can also set different shared device icons to display at the corresponding length.

In addition, in order to increase the fault tolerance, the pitch angle of the PAD may have a certain deviation, and the pitch angle deviation may be adjusted according to the angle formed by the shared device of the adjacent height. For example, at present, the more popular wall-mounted TVs in the home have higher suspension heights. The home computer is usually placed on the computer desk, and the height is low (the default is that the height of the TV and the computer are higher than the height of the PAD, and the horizontal projection direction is the same). Thus, the closest shared device with the pitch angle of the PAD is selected as the selected object.

It should be added that, in order to improve the accuracy of the selection, when there are multiple shared devices placed adjacently, the calculated horizontal projection and pitch angle difference are small, and it is difficult to determine which one the user selects within the error range, and then display The corresponding shared device icons involved need to be manually selected by the user. For example, the PAD pops up a dialog menu, and displays the shared device icon involved, and the user selects the icon by touching the icon.

The following is a method for implementing a close-range azimuth positioning method and a file transmission method for a shared device. The system is described. As shown in Figure 4, the system includes:

The spatial coordinate receiving unit 11 is configured to receive spatial coordinates of the current shared device and other shared devices measured by the pointing device.

The coordinate system conversion unit 12 is connected to the spatial coordinate receiving unit 11 and is configured to perform coordinate system conversion on the spatial coordinates of the other shared device by using the spatial coordinates of the current shared device as an origin to determine that other shared devices are in a horizontal plane with respect to the current shared device. Direction and pitch angle.

The storage unit 18 is connected to the coordinate system conversion unit 12 for storing the spatial coordinates of all the shared devices after the conversion.

In addition, the storage unit 18 is further configured to store the model, device icon and IP address of all shared devices.

The projection unit 13 is connected to the coordinate system conversion unit 12 for projecting other shared devices onto the horizontal plane according to the spatial coordinates after the coordinate system is converted, and determining the directions in which the other shared devices are projected on the horizontal plane with respect to the current shared device.

The touch track acquisition unit 14 is configured to collect a touch track of the user.

A gravity sensor 18 is provided for the user to control the pitch angle exhibited by the current shared device.

The projection unit 13 is also connected to the trajectory acquisition unit 14 for projecting the touch trajectory onto a horizontal plane.

A direction sensor 15, connected to the projection unit 13, is used to determine the reference direction of the currently shared device. Specifically, regardless of how the current shared device rotates or tilts the screen in the horizontal plane, the determined spatial directions of the other shared devices and the user touch trajectory are relatively unchanged.

The shared device identification unit 16, which is connected to the touch track acquisition unit 14, the projection unit 13, and the gravity sensor 18, is configured to determine the matched shared device according to the direction in which the touch track is projected in the horizontal plane and the pitch angle of the current shared device.

The shared device identification unit 16 includes a touch speed determination module, a pitch angle fault tolerance module, and a touch trajectory calculation module (not shown).

The touch speed determination module is configured to determine a user touch sliding speed. Specifically, It is considered to be used to select other shared devices only when the touch slide speed reaches the preset speed. The starting point of the touch track corresponds to the selected file.

The pitch angle fault tolerance module is used to correct the deviation angle of the pitch angle. Specifically, when there is an angular deviation between the current shared device and the candidate shared device, the shared device in the direction closest to the direction indicated by the pitch angle is selected as the selected object.

When there are two or more shared devices with the same pitch angle, the touch track calculation module is used to calculate the touch track length, and the shared devices according to different length values are matched. The display unit is triggered if there are multiple shared device icons matching the length of the touch track (ie, the projection direction is approximate).

Display unit (not shown), respectively with touch track acquisition unit 14, gravity sensor

18 is connected to the shared device identification unit 16 for triggering display of icons of other shared devices according to the touch point; and when the pitch angle difference between the two or more shared devices is small, the projection direction is approximated, and the two or more devices are displayed. Icon for sharing devices.

The shared file transfer unit 17 is connected to the shared device identification unit 16 for file transfer to the determined matching shared device.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention. In general, any modifications, equivalent substitutions, improvements, etc., which are included in the spirit and principles of the present invention, should be included in the present invention. Within the scope of protection of the invention.

Claims

Claim

A short-range azimuth positioning method applied to multi-screen sharing, characterized in that it comprises the steps of:

The method according to claim 1, wherein the step A comprises: determining a spatial coordinate of the current shared device according to the strength of the at least three shared devices having the spatial coordinates and the current shared device communication signal;

The method according to claim 1, wherein the step A comprises: acquiring image information including at least three shared devices having spatial coordinates and the current shared device;

The method according to claim 1, wherein the sharing device that matches the tilt angle of the screen in step C comprises:

A shared device in which the pitch angle of the shared device and the screen pitch angle have the smallest error.

The method according to claim 1, wherein after step A, the method further comprises: On the touch screen of the current shared device, icons of the respective other shared devices are displayed in a direction corresponding to the starting point of the touch track according to respective directions of the horizontal plane projection.

The method according to claim 1, wherein after step A, the method further comprises: displaying, on the touch screen of the current sharing device, the icons of the respective sharing devices that match the tilt angle of the screen according to various directions of the horizontal plane projection Display is performed in a direction corresponding to the beginning of the touch track.

The method according to claim 1, wherein when there are more than two shared devices that match the direction indicated by the touch track and the tilt angle of the screen, the method further includes:

8. A short-distance file transmission method for multi-screen sharing, characterized in that it comprises the steps of:

The method according to claim 8, wherein after step A, the method further comprises: displaying, on the touch screen of the current shared device, the icons of the respective sharing devices that match the tilt angle of the screen according to various directions of the horizontal plane projection Display is performed in a direction corresponding to the beginning of the touch track.

The method according to claim 8, wherein when there are more than two shared devices that match the direction indicated by the touch track and the pitch angle of the screen, the method further includes:

Step C also determines sharing settings corresponding to different distances according to different lengths of the touch trajectory Ready.

A system for a short-distance file transmission method for multi-screen sharing, comprising: a spatial coordinate receiving unit, configured to receive spatial coordinates of each shared device;

A shared file transfer unit that transfers the selected file to the matched shared device.