WO2017092199A1

WO2017092199A1 - Projecting method and device for projector

Info

Publication number: WO2017092199A1
Application number: PCT/CN2016/077267
Authority: WO
Inventors: 王煜辰
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-12-01
Filing date: 2016-03-24
Publication date: 2017-06-08
Also published as: CN106817550A; CN106817550B

Abstract

Provided in the present invention are a projecting method and device for a projector. The method comprises: acquiring projection obstacle information in a projection region, wherein, the projection obstacle information is configured to indicate whether an obstacle is in a first projection region of a first projector and whether an obstacle is in a second projection region of a second projector; if the projection obstacle information indicates that an obstacle is in the first projection region and no obstacle is in the second projection region, transmitting to the second projector projection instruction information configured to instruct the second projector to synchronously project current projection content of the first projector. The present invention improves quality of a projection screen by addressing a problem in which projection of a projector is likely to be blocked, and a projection screen is influenced.

Description

Projector projection method and device

Technical field

The present invention relates to the field of communications, and in particular to a projection method and apparatus for a projector.

Background technique

In the related art, when a portable projector is used, since the projector has strong maneuverability, the use environment is often uncertain and random, and it is not possible to select a very advantageous placement like a fixed projector. The area is fixed in one location. 1 is a schematic diagram of a typical projection scene according to the related art. As shown in FIG. 1 , due to the complicated projection environment, there are often random and maneuverable obstacles in front of the projector when the screen is projected, for example, in the open air projection. At that time, it is very likely that someone will pass through the front of the projector to block the projected light, which further causes the projection picture to be incomplete, affecting the viewing effect of the projector.

In view of the related art, the projection of the projector is easily occluded, which affects the problem of the projected picture, and there is currently no effective solution.

Summary of the invention

The invention provides a projection method and device for a projector, so as to at least solve the problem that the projection of the projector in the related art is easily blocked and affects the projected image.

According to an embodiment of the present invention, a projection method of a projector is provided, including:

Obtaining projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether there is an obstacle in the first projection area of the first projector, and whether the second projection area of the second projector has an obstacle;

And when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, transmitting projection indication information to the second projector, where the projection indication information is used Instructing the second projector to simultaneously project the current projected content of the first projector.

In the embodiment of the present invention, before acquiring the projection obstacle information of the projection area, the method includes:

A wireless fidelity Wi-Fi pair is activated to connect the first projector and the second projector.

In an embodiment of the present invention, before the sending the projection indication information to the second projector,

The calibration point information of the current projection content of the first projector is sent to the second projector, wherein the calibration point information is used to provide a basis for calibrating the current projection content projected by the second projector.

In an embodiment of the invention, synchronizing the current projected content of the first projector to the second projector comprises:

In the case that the current projected content is video information, the first projector sends the video information to the And a second projector, and transmitting a frame number of the currently projected video information to the second projector, wherein the frame number is used to provide a synchronization basis for the second projector to synchronously play the current projected content.

In an embodiment of the present invention, the acquiring the imaging obstacle information of the projection area includes:

Receiving a time when the obstacle enters the projection area, wherein the time is determined by detecting that the obstacle will enter the projection area, and calculating the obstacle according to a moving speed of the obstacle Time to enter the projection area;

According to another embodiment of the present invention, a projection method of a projector is further provided, including:

The second projector synchronously projects the current projection of the first projector if the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle content.

According to another embodiment of the present invention, there is also provided a projection apparatus for a projector, comprising:

a first acquiring module, configured to acquire projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and whether the second projection area of the second projector is Have obstacles;

And a sending module, configured to send, to the second projector, projection indication information, when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle The projection indication information is used to instruct the second projector to simultaneously project the current projected content of the first projector.

In an embodiment of the invention, the device further includes:

The pairing module is configured to activate the wireless fidelity Wi-Fi pair to connect the first projector and the second projector before acquiring the projection obstacle information of the projection area.

In an embodiment of the invention, the apparatus further comprises

a first synchronization module, configured to send calibration point information of the current projected content to the second projector before transmitting the projection indication information to the second projector, wherein the calibration point information is used for calibration The current projected content projected by the second projector provides a basis.

In an embodiment of the invention, the device further includes:

a second synchronization module, configured to send the video information to the second projector if the current projected content is video information, and send a frame number of the currently projected video information to the second The projector, the frame number is used to provide a synchronization basis for the second projector to synchronously play the current projected content.

In an embodiment of the present invention, the first acquiring module includes:

a receiving unit configured to receive a time when the obstacle enters the projection area, wherein the time is determined by detecting that the obstacle will enter the projection area according to a moving speed of the obstacle Calculate the The time at which the obstacle enters the projection area.

According to another embodiment of the present invention, there is also provided a projection device for a projector, located in the second projector, comprising:

a second acquiring module, configured to acquire projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and the second projection of the second projector Whether there are obstacles in the area;

a projection module, configured to synchronously project the current projected content of the first projector if the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle .

According to the present invention, the projection obstacle information of the projection area is obtained, wherein the projection obstacle information is used to indicate whether there is an obstacle in the first projection area of the first projector, and whether the second projection area of the second projector has an obstacle, And when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, sending projection indication information to the second projector, the projection indication information is used to indicate the second projection The instrument simultaneously projects the current projection content of the first projector, which solves the problem that the projection of the projector is easily blocked, affects the projection picture, and improves the quality of the projected picture.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic diagram of a projection scene according to a typical technique in the related art;

2 is a flow chart 1 of a projection method of a projector according to an embodiment of the present invention;

3 is a second flowchart of a projection method of a projector according to an embodiment of the present invention;

4 is a third flowchart of a projection method of a projector according to an embodiment of the present invention;

FIG. 5 is a flowchart 4 of a projection method of a projector according to an embodiment of the present invention; FIG.

6 is a structural block diagram 1 of a projection apparatus of a projector according to an embodiment of the present invention;

7 is a structural block diagram 2 of a projection apparatus of a projector according to an embodiment of the present invention;

8 is a structural block diagram 3 of a projection apparatus of a projector according to an embodiment of the present invention;

9 is a structural block diagram 4 of a projection apparatus of a projector according to an embodiment of the present invention;

FIG. 10 is a block diagram 5 of a structure of a projector according to an embodiment of the present invention; FIG.

11 is a schematic diagram of multi-projection automatic cooperative operation according to an embodiment of the present invention;

12 is a schematic flow chart of establishing a connection between two projectors according to an embodiment of the present invention;

FIG. 13 is a schematic flowchart of WiFi pairing of two projectors according to an embodiment of the present invention; FIG.

14 is a flow chart showing calibration of projection screens of two projectors according to an embodiment of the present invention;

15 is a schematic diagram of a four-point calibration screen according to an embodiment of the present invention;

16 is a schematic flow chart of automatic screen synchronization according to an embodiment of the present invention;

17 is a flow chart showing obstacle detection according to an embodiment of the present invention;

18 is a schematic diagram of the principle of obstacle detection according to an embodiment of the present invention;

19 is a block diagram showing the structure of a cooperative working system of two projectors according to an embodiment of the present invention;

20 is a schematic diagram of obstacle detection according to an embodiment of the present invention;

21 is a schematic diagram of an open-air projection scene in accordance with an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a projection method of a projector is provided. FIG. 2 is a flowchart 1 of a projection method of a projector according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps:

Step S202, acquiring projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether there is an obstacle in the first projection area of the first projector, and whether the second projection area of the second projector has an obstacle;

Step S204, if the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, sending projection indication information to the second projector, the projection indication information is used to indicate the The second projector synchronously projects the current projected content of the first projector.

Through the above steps, when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, the projection indication information is sent to the second projector, and the projection indication information is used to indicate The second projector projects the synchronized current projection content of the first projector, which solves the problem that the projection of the projector is easily blocked, affects the projected image, and improves the quality of the projected image.

In this embodiment, before acquiring the projection obstacle information of the projection area, the wireless fidelity Wi-Fi pair is activated to connect the first projector and the second projector.

In this embodiment, before the projection indication information is sent to the second projector, the calibration point information of the current projection content of the first projector is sent to the second projector, wherein the calibration point information is used for calibration Projected by the second projector The current projection content provides a basis.

In this embodiment, when the current projection content is video information, the first projector sends the video information to the second projector, and sends the frame number of the currently projected video information to the second The projector is configured to provide a synchronization basis for the second projector to synchronously play the current projected content.

In this embodiment, the capturing obstacle information of the projection area includes one of the following:

Receiving the time when the obstacle enters the projection area, wherein the time is determined by detecting that the obstacle will enter the projection area, and calculating the time when the obstacle enters the projection area according to the moving speed of the obstacle.

In this embodiment, the acquiring the projection obstacle information and transmitting the projection indication information may be the first projector acquisition, or the second projection acquisition, or may be the control device of the second projector that controls the first projector. .

In the embodiment where the first projector is the control terminal of the above method, FIG. 3 is a second flowchart of a projection method of the projector according to an embodiment of the present invention, as shown in FIG.

Step S302, the first projector acquires projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and the second projection of the second projector Whether there are obstacles in the area;

Step S304, in the case that the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, the first projector sends projection indication information to the second projector, the projection indication The information is used to instruct the second projector to simultaneously project the current projected content.

In an embodiment in which the control terminal is the first projector and the control device of the second projector, FIG. 4 is a third flowchart of a projection method of the projector according to an embodiment of the present invention, as shown in FIG. The process includes the following steps:

Step S402, the control device detects whether there is an obstacle in the first projection area of the first projector, and detects whether there is an obstacle in the second projection area of the second projector to generate the projection obstacle information, wherein the first projector will The current projection content is synchronized to the second projector;

Step S404, if there is an obstacle in the first projection area, and the second projection area has no obstacle, the control device sends projection indication information to the second projector, where the projection indication information is used to indicate the second The projector synchronizes the projection to synchronize the current projected content.

In the embodiment where the second projector is the control terminal of the above method, FIG. 5 is a flowchart 4 of a projection method of the projector according to the embodiment of the present invention. As shown in FIG. 5, the flow includes the following steps:

Step S502, the second projector acquires the projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and whether the second projection area of the second projector is Have obstacles;

Step S504, in a case where the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, the second projector synchronously projects the current projection content of the first projector.

In this embodiment, a projection device for a projector for implementing the above embodiment and a preferred implementation is also provided. The method has been described and will not be described again. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 6 is a structural block diagram of a projection apparatus of a projector according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes:

The first obtaining module 62 is configured to acquire the projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and whether the second projection area of the second projector is Have obstacles;

The sending module 64 is configured to send, when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, and send the projection indication information to the second projector, where the projection indication information is used. The second projector is instructed to simultaneously project the current projected content of the first projector.

Through the above device, the first acquiring module 62 acquires the projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and the second projection area of the second projector Whether there is an obstacle, the sending module 64 sends projection indication information to the second projector, where the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, the projection indication The information is used to indicate that the second projector synchronously projects the current projection content of the first projector, which solves the problem that the projection of the projector is easily blocked, affects the projected image, and improves the quality of the projected image.

7 is a structural block diagram 2 of a projection apparatus of a projector according to an embodiment of the present invention. As shown in FIG. 7, in addition to the module of FIG. 6, the apparatus further includes:

The pairing module 72 is configured to initiate a wireless fidelity Wi-Fi pair connection to the first projector and the second projector before acquiring the projection obstacle information of the projection area.

8 is a structural block diagram 3 of a projection apparatus of a projector according to an embodiment of the present invention. As shown in FIG. 8, in addition to the module of FIG. 6, the apparatus further includes:

The first synchronization module 82 is configured to send calibration point information of the current projection content to the second projector before sending the projection indication information to the second projector, wherein the calibration point information is used to calibrate the second The current projected content projected by the projector provides a basis.

9 is a structural block diagram of a projection apparatus of a projector according to an embodiment of the present invention. As shown in FIG. 9, in addition to the module of FIG. 6, the apparatus includes:

The second synchronization module 92 is configured to send the video information to the second projector when the current projection content is video information, and send the frame number of the currently projected video information to the second projector. The frame number is used to provide a synchronization basis for the second projector to synchronously play the current projected content.

In this embodiment, the first obtaining module 62 includes one of the following:

a receiving unit configured to receive a time when the obstacle enters the projection area, wherein the time is determined by: detecting that the obstacle will enter the projection area, and calculating the obstacle according to the moving speed of the obstacle Cast The time of the shadow area.

FIG. 10 is a structural block diagram 5 of a projection apparatus of a projector according to an embodiment of the present invention. The fifth embodiment is located in a second projector. As shown in FIG. 10, the apparatus includes:

The second obtaining module 1002 is configured to acquire the projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and the second projection area of the second projector Whether there are obstacles;

The projection module 1004 is configured to synchronously project the current projection content of the first projector if the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle.

In another embodiment of the present invention, there is also provided a projection system of a projector, comprising: a first projector and a second projector;

The first projector synchronizes the current projection content of the first projector to the second projector;

The first projector acquires projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and whether the second projection area of the second projector has obstacle;

When the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, the first projector sends the projection indication information to the second projector;

The second projector receives the projection indication information, and the second projector synchronously projects the current projected content.

The invention will now be described in detail in conjunction with the preferred embodiments and embodiments.

The preferred embodiment utilizes a method in which a plurality of projectors work together to automatically recognize an obstacle blocking light in front of the projector, and automatically activates a second projector for image compensation when encountering an obstacle, thereby ensuring completeness of the projected image. And coherence, as shown in Figure 1, is to let the obstacles in the process of moving, is the audience A area, and the viewer B area is completely seamless, there is no shadow moving on the projection surface.

In addition, this collaborative projection scene can also be applied to supplement another projector when an unexpected situation occurs in one projector.

11 is a schematic diagram of multi-projection automatic cooperative operation according to an embodiment of the present invention, as shown in FIG. 11, including a projection light machine (projector A and projector B), a light machine control module, an obstacle detection module, and an obstacle speed. Measurement module, picture correction module, picture synchronization module, picture buffer module, connection module.

The preferred embodiment requires two or more projectors to automatically activate a second projector for screen compensation when a projector detects that an obstacle may have passed in the area of the projected light.

In Fig. 11, the projector A is the main projector. In the projection, both the viewer A and the viewer B can see the complete projection picture, but when the obstacle enters the projection area of the projector A, the viewer A is blocked by the light of the projector. And the viewer B can see the shadow of the obstacle on the projection surface. At this time, when the moving obstacle is in the first stage, that is, within the projection range of the projector A, the projector A is turned off, the projector B is started, and the projection is started. The picture content of the instrument B projection is the same as that of the projector A. At this time, the audience A Both the viewer and the viewer B can see a complete and coherent picture. The obstacle moves into the projection range of the projector B, that is, the obstacle 2 stage shown in Fig. 11, when the projector is turned on and the projector B is turned off, by which the viewer A area and the viewer B area can be seen. Complete projection screen.

FIG. 12 is a schematic flowchart of establishing a connection between two projectors according to an embodiment of the present invention. As shown in FIG. 12, the method includes:

S1201, in the equipment preparation phase, the projector A establishes a connection with the projector B, wherein the projector A and the projector B can be connected by using WIFI or other high-speed transmission methods, such as wired.

S1202, after the connection is established, the screen synchronization is completed.

S1203, when the projector is being projected, if there is an obstacle in the projection range of the projector being projected, it automatically switches to another projector.

Device pairing step embodiment

Before the projector A and the projector B perform collaborative projection, device pairing is required to achieve the purpose of cooperative work.

In this embodiment, a WiFi connection is taken as an example. FIG. 13 is a schematic flowchart of a WiFi pairing of two projectors according to an embodiment of the present invention. As shown in FIG.

S1301, the projector A is ready to perform a cooperative projection state after being placed;

S1302, projector A turns on WIFI and waits for pairing of projector B;

S1303, the projector B enters the collaborative projection state scanning projector A's Service Set Identifier (abbreviated as SSID)

S1304, the projector B is connected to the projector A through the WIFI mode, and enters the cooperative working state after the projector A accepts;

S1305, projector A and projector B enter the picture correction step.

Since the projection screens of projector A and projector B are identical, it is necessary to ensure the uniformity of the projection range, so the screen calibration operation and the trapezoidal correction operation are performed before the projector starts to prevent, and the projection screen calibration module method embodiment. FIG. 14 is a schematic flowchart of calibration of projection screens of two projectors according to an embodiment of the present invention. As shown in FIG. 14, the method includes:

S1401, projector A projects the screen and performs keystone correction

The S1402 projector projection calibration screen determines the projection range. 15 is a schematic diagram of a four-point calibration screen according to an embodiment of the present invention. As shown in FIG. 15, the calibration screen may adopt four points of the four-point calibration screen ABCD for marking the range projected by the projector A.

S1403 projector B projection screen, and according to the calibration point of projector A, determine the same projection range, it is necessary to elaborate that the calibration method here can have a variety of calibration methods, the first method can be used by projector B Four calibration points are also cast, and the user manually coincides with the calibration point of the projector A according to the calibration point of the projector B, which can ensure that the projection screen range of the projector B is consistent with the projection range of the projector A. The second method, projector B is installed in the direction of the projector The camera and the camera can perform automatic screen calibration according to the calibration point thrown by the projector A, and display the screen range of the projector B of the projector B on the liquid crystal screen of the projector B, and the user observes according to the liquid crystal screen of the projector B. To the calibration point of projector A, projector B performs automatic calibration after the calibration conditions are met.

After the S1404 projector B determines that the projection range of the projector A is consistent, the trapezoidal correction is performed.

S1405 Projector A and Projector B complete the screen calibration.

In the embodiment of the automatic screen synchronization module, FIG. 16 is a schematic flowchart of automatic screen synchronization according to an embodiment of the present invention. As shown in FIG. 16, after the projector is placed, the screen synchronization module needs to perform a synchronization screen, and the user is playing. When the video is played, the synchronization of the picture is required to be high, and when the still picture is played or the picture with less consistency is required, the synchronization requirement of the picture can be reduced. The picture automatic synchronization module is divided into two synchronization modes: media and static to meet different needs.

S1601, projector A and projector B start to synchronize the picture;

S1602, if the video file is played, jump to S1604;

S1603, if a static picture is played, the picture is directly sent by the projector A to the projector B for mirroring, and the process can be completed by miraccast technology;

S1605, the projector A sends the video file to the picture buffer module of the projector B;

S1606, the projector B waits for the video file in the buffer module to meet the playing requirement, and the requirement is the minimum playing requirement, that is, the video playing condition is met, and the threshold value can be adjusted according to actual conditions;

S1607, the projector starts playing, and at the same time, a play command is sent to the projector A;

S1608, at this time, projector A and projector B start playing video at the same time;

S1609, the projector A sends a frame number to the projector B during playback;

S1610, projector B detects whether the playback is synchronized by frame number comparison. If synchronized, continue to loop to detect the frame number during playback;

S1611, projector B sends frame number comparison detection playback is not synchronized, projector B automatically adjusts the playback progress according to the frame number to achieve the same as the playback progress of projector A, and after the playback progress is synchronized, continue to pass the detection frame number The method detects the degree of synchronization.

In the obstacle detection module embodiment, since the projector A and the projector B need to pre-determine whether there is an obstacle in the projection range of the screen, the projector A and the projector B need to have an obstacle detection module. Judge the obstacles. There are many ways to judge. You can use the camera to capture the image in the projection range. You can also use the infrared device to capture the moving objects in the projection range. Whether it is a camera or an infrared device, the acquisition range must be larger than the projection range. The sensor gives a description of the distance.

17 is a schematic flow chart of obstacle detection according to an embodiment of the present invention, as shown in FIG.

S1701, the distance sensor 1 detects a distance along a projection boundary;

S1702, sensor 2 and sensor 3 determine whether an obstacle has entered;

S1703, outputting the judgment result.

A distance sensor is disposed around the projection machine to scan the distance in the projection direction. The side of the projection screen will be described.

18 is a schematic diagram of the principle of obstacle detection according to an embodiment of the present invention. As shown in FIG. 18, AD is a projection boundary of the projector, the distance sensor 1 scans the AD distance, the distance sensor 2 scans the BD distance, and the distance sensor 3 scans the CD distance. If the CD distance is decreased, it is judged that an obstacle has entered, but if the CD distance is still much larger than the AD distance, the obstacle is not judged to enter. When the obstacle enters the BD range, the moving speed of the obstacle can be calculated based on the time when the obstacle passes through the CD and the BD. The obstacle determination module can pre-determine whether the obstacle enters the projector range according to the moving speed of the obstacle.

FIG. 19 is a structural block diagram of a cooperative working system of two projectors, as shown in FIG. 19, including: a first obstacle determination module 1902, a second obstacle determination module 1904, and a optomechanical control module 1906, according to an embodiment of the present invention. The first projection illuminator 1908 and the second projection illuminator 1910.

In the embodiment of the optomechanical control module 1906, since the projector A (first projection illuminator 1908) and the projector B (second projection illuminator 1910) are performing cooperative work, the optomechanical control module 1906 needs to be adapted to different situations. To switch the operation of the optical machine, the obstacle determination module 1904 determines to switch to the projector B when the projector A is blocked, and switches to the projector A when the projector B is blocked, and if it is blocked at the same time, the optical machine is kept. constant.

In an apparatus system embodiment, FIG. 20 is a schematic diagram of obstacle detection according to an embodiment of the present invention. As shown in FIG. 20, the steps of the general embodiment in which projector A and projector B work together include:

S2001, starting to place projector A and projector B;

S2002, the screen of the projector A and the projector B are calibrated by the picture calibration module;

S2003, synchronizing the screens of the projector A and the projector B by the screen synchronization module;

S2004, projector A starts to project;

In S2005, the obstacle determination module starts to determine whether the obstacle passes through the projection range of the projector A and the projector B;

S2006, if an obstacle passes, the optomechanical control module controls the optomechanical switch to switch between the projector A and the projector B;

S2007, the end.

In the above embodiment, the user connects the wireless router to the wired network and turns on the power switch. Use your mobile phone to search the Bluetooth of your wireless router for pairing. After the pairing is completed, the user opens the setting program in the mobile phone, and sets the hotspot, encryption mode, password, and access mode of the WAN port of the router. After the setting is successful, the router takes effect. This device is generally used for business travel users, often changing hotels, and needs a wireless routing device that can be carried and conveniently set up.

In addition to the embodiments of the above embodiments, the embodiments of the present invention further include:

1. A single control terminal can simultaneously control two projectors for screen collaborative output, and use high-speed connection to maintain picture synchronization. If high-speed connection is adopted, the picture buffer module can be omitted for picture buffering.

2. It is possible to compensate the image of a part of the main projector in multiple directions by multiple projectors to achieve better compensation effect.

3. The size of the obstacle can be sensed by the distance sensor. If the two projectors are blocked at the same time, the projector with a small blocking range can be opened for projection.

In another embodiment, the projection method is very advantageous for an open-air projection scene with a complicated projection environment, and the multi-azimuth image compensation can be performed by utilizing the advantages of a large projection field.

For example, in an open-air scene, FIG. 21 is a schematic diagram of an open-air projection scene according to an embodiment of the present invention. As shown in FIG. 21, two projectors (projector 1 and projector 2) are disposed on both sides of the projected surface, on one side. In the case of occlusion, turning on the projector on the other side can greatly reduce the probability that the picture will be occluded.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, The optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the storage medium may be configured to store program code for performing the method steps of the above embodiment:

Optionally, the storage medium is further arranged to store program code for performing the method steps of the above-described embodiments:

Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A medium such as a disc or an optical disc that can store program codes of the method steps of the above embodiments.

Optionally, in this embodiment, the processor performs the method steps of the foregoing embodiments according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they can be stored in the storage device Executed by the computing device, and in some cases, the steps shown or described may be performed in an order different than that herein, or they may be fabricated into individual integrated circuit modules, or multiple of them. Or the steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

According to the above technical solution provided by the embodiment of the present invention, the projection obstacle information of the projection area is acquired, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and the second projector is second. Whether there is an obstacle in the projection area, and if the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, sending projection indication information to the second projector, the projection indication information The utility model is configured to instruct the second projector to simultaneously project the current projection content of the first projector, thereby solving the problem that the projection of the projector is easily blocked, affecting the projected image, and improving the quality of the projected image.

Claims

A projection method of a projector, comprising:

Obtaining projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether there is an obstacle in the first projection area of the first projector, and whether the second projection area of the second projector has an obstacle;

And when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle, transmitting projection indication information to the second projector, where the projection indication information is used Instructing the second projector to simultaneously project the current projected content of the first projector.
The method of claim 1, wherein the obtaining the projection obstacle information of the projection area comprises:

A wireless fidelity Wi-Fi pair is activated to connect the first projector and the second projector.
The method of claim 1, wherein before transmitting the projection indication information to the second projector,

The calibration point information of the current projection content of the first projector is sent to the second projector, wherein the calibration point information is used to provide a basis for calibrating the current projection content projected by the second projector.
The method of claim 1 wherein synchronizing the current projected content of the first projector to the second projector comprises:

In a case where the current projection content is video information, the first projector transmits the video information to the second projector, and transmits a frame number of the currently projected video information to the second projection. The frame number is used to provide a synchronization basis for the second projector to synchronously play the current projected content.
The method according to any one of claims 1 to 4, wherein the obtaining the projection obstacle information of the projection area comprises:

Receiving a time when the obstacle enters the projection area, wherein the time is determined by detecting that the obstacle will enter the projection area, and calculating the obstacle according to a moving speed of the obstacle The time to enter the projection area.
A projection method of a projector, comprising:

Obtaining projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether there is an obstacle in the first projection area of the first projector, and whether the second projection area of the second projector has an obstacle;

The second projector synchronously projects the current projection of the first projector if the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle content.
A projection device for a projector, comprising:

a first acquiring module, configured to acquire projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and whether the second projection area of the second projector is Have obstacles;

And a sending module, configured to send, to the second projector, projection indication information, when the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle The projection indication information is used to instruct the second projector to simultaneously project the current projected content of the first projector.
The apparatus of claim 7 wherein said apparatus further comprises:

The pairing module is configured to activate the wireless fidelity Wi-Fi pair to connect the first projector and the second projector before acquiring the projection obstacle information of the projection area.
The device of claim 7 wherein said device further comprises

a first synchronization module, configured to send calibration point information of the current projected content to the second projector before transmitting the projection indication information to the second projector, wherein the calibration point information is used for calibration The current projected content projected by the second projector provides a basis.
The apparatus of claim 7 wherein said apparatus further comprises:

a second synchronization module, configured to send the video information to the second projector if the current projected content is video information, and send a frame number of the currently projected video information to the second The projector, the frame number is used to provide a synchronization basis for the second projector to synchronously play the current projected content.
The apparatus of claim 7, wherein the first obtaining module comprises:

a receiving unit configured to receive a time when the obstacle enters the projection area, wherein the time is determined by detecting that the obstacle will enter the projection area according to a moving speed of the obstacle The time at which the obstacle enters the projection area is calculated.
A projection device for a projector, located in the second projector, comprising:

a second acquiring module, configured to acquire projection obstacle information of the projection area, wherein the projection obstacle information is used to indicate whether the first projection area of the first projector has an obstacle, and the second projection of the second projector Whether there are obstacles in the area;

a projection module, configured to synchronously project the current projected content of the first projector if the projection obstacle information indicates that the first projection area has an obstacle, and the second projection area has no obstacle .