CN106817550B - Projection method and device of projector - Google Patents
Projection method and device of projector Download PDFInfo
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- CN106817550B CN106817550B CN201510870491.XA CN201510870491A CN106817550B CN 106817550 B CN106817550 B CN 106817550B CN 201510870491 A CN201510870491 A CN 201510870491A CN 106817550 B CN106817550 B CN 106817550B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
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Abstract
The invention provides a projection method and a projection device of a projector, wherein the method comprises the following steps: the method comprises the steps of obtaining projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not, sending projection indication information to the second projector under the condition that the projection obstacle information indicates that the first projection area has the obstacle and the second projection area has no obstacle, and the projection indication information is used for indicating the second projector to synchronously project the current projection content of the first projector.
Description
Technical Field
The invention relates to the field of communication, in particular to a projection method and device of a projector.
Background
In the related art, when a portable projector is used, because the projector has strong mobility, the use environment is often uncertain and random, and it is impossible to select a placement area with great advantage and fix the placement area at a position, as in the case of a fixed projector. Fig. 1 is a schematic diagram of a typical projection scene according to the related art, as shown in fig. 1, due to a complex projection environment, there is often a random and flexible obstacle in front of the projector when the picture is projected, for example, in an open air projection, it is likely that someone passes through the front of the projector to block the projection light, which further results in an incomplete projection picture and affects the viewing effect of the projector.
Aiming at the problems that in the related art, the projection of a projector is easy to be shielded and the projection picture is influenced, no effective solution is available at present.
Disclosure of Invention
The invention provides a projection method and a projection device of a projector, which at least solve the problem that the projection of the projector in the related technology is easy to be blocked and the projection picture is influenced.
According to an aspect of the present invention, there is provided a projection method of a projector, including:
acquiring projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
and sending projection indication information to the second projector under the condition that the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle, wherein the projection indication information is used for indicating the second projector to synchronously project the current projection content of the first projector.
Further, acquiring the projection obstacle information of the projection area previously includes:
starting a wireless fidelity Wi-Fi pairing connection with the first projector and the second projector.
Further, before sending the projection indication information to the second projector, including,
and sending calibration point information of the current projection content of the first projector to the second projector, wherein the calibration point information is used for providing basis for calibrating the current projection content projected by the second projector.
Further, synchronizing the current projected content of the first projector to the second projector comprises:
and under the condition that 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 projector, wherein the frame number is used for providing a synchronous basis for the second projector to synchronously play the current projection content.
Further, the acquiring of the projection obstacle information of the projection area includes:
receiving a time when the obstacle enters the projection area, wherein the time is determined by: when the obstacle is detected to enter the projection area, calculating the time for the obstacle to enter the projection area according to the moving speed of the obstacle;
according to another aspect of the present invention, there is also provided a projection method of a projector, including:
acquiring projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
and under the condition that 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.
According to another aspect of the present invention, there is also provided a projection apparatus of a projector, including:
the projector comprises a first acquisition module, a second acquisition module and a display module, wherein the first acquisition module is used for acquiring projection obstacle information of a projection area, and the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
a sending module, configured to send projection indication information to the second projector when the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle, where the projection indication information is used to indicate the second projector to synchronously project current projection content of the first projector.
Further, the apparatus further comprises:
and the pairing module is used for starting wireless fidelity Wi-Fi to pair and connect the first projector and the second projector before acquiring the projection obstacle information of the projection area.
Further, the device also comprises a control unit,
the first synchronization module is configured to send calibration point information of current projection content to the second projector before sending projection instruction information to the second projector, where the calibration point information is used to provide a basis for calibrating the current projection content projected by the second projector.
Further, the apparatus further comprises:
and the second synchronization module is used for sending the video information to the second projector under the condition that the current projection content is the video information, and sending the frame number of the currently projected video information to the second projector, wherein the frame number is used for providing a synchronization basis for the second projector to synchronously play the current projection content.
Further, the first obtaining module comprises:
a receiving unit, configured to receive a time when the obstacle enters the projection area, where the time is determined by: and when the obstacle is detected to enter the projection area, calculating the time for the obstacle to enter the projection area according to the moving speed of the obstacle.
According to another aspect of the present invention, there is also provided a projection apparatus of a projector, located in a second projector, including:
the second acquisition module is used for acquiring projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
and the projection module is used for synchronously projecting the current projection content of the first projector under the condition that the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle.
The invention obtains the projection obstacle information of the projection area, wherein the projection obstacle information is used for indicating whether the first projection area of the first projector has an obstacle or not and whether the second projection area of the second projector has an obstacle or not, and under the condition that the projection obstacle information indicates that the first projection area has the obstacle and the second projection area has no obstacle, the projection instruction information is sent to the second projector and used for indicating the second projector to synchronously project the current projection content of the first projector, thereby solving the problems that the projection of the projector is easy to be blocked and the projection picture is influenced, and improving the quality of the projection picture.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic diagram of a projection scene according to a typical in the related art;
fig. 2 is a first flowchart of a projection method of a projector according to an embodiment of the present invention;
fig. 3 is a second flowchart of a projection method of a projector according to an embodiment of the invention;
fig. 4 is a flowchart three of a projection method of a projector according to an embodiment of the present invention;
fig. 5 is a fourth flowchart of a projection method of a projector according to an embodiment of the present invention;
fig. 6 is a first block diagram of a projection device of a projector according to an embodiment of the present invention;
fig. 7 is a block diagram of a second structure of a projection device of a projector according to an embodiment of the present invention;
fig. 8 is a block diagram of a projection device of a projector according to an embodiment of the present invention;
fig. 9 is a block diagram of a projection device of a projector according to an embodiment of the present invention;
fig. 10 is a block diagram of a projection device of a projector according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of multi-projection auto-collaboration according to an embodiment of the invention;
fig. 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 flow chart of two projector WiFi pairing, according to an embodiment of the present invention;
FIG. 14 is a schematic flow chart of two projector projection screen calibration according to an embodiment of the present invention;
FIG. 15 is a schematic diagram of a four-point calibration screen according to an embodiment of the invention;
FIG. 16 is a flow chart illustrating automatic synchronization of pictures according to an embodiment of the present invention;
FIG. 17 is a schematic flow chart of obstacle detection according to an embodiment of the present invention;
fig. 18 is a schematic diagram of the obstacle detection principle according to an embodiment of the present invention;
fig. 19 is a block diagram of a configuration of a cooperative system of two projectors according to an embodiment of the present invention;
FIG. 20 is a schematic illustration of obstacle detection according to an embodiment of the present invention;
FIG. 21 is a schematic view of an open air projection scene according to an embodiment of the invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In the present embodiment, a projection method of a projector is provided, and fig. 2 is a first flowchart of a projection method of a projector according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202, acquiring projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
step S204, when the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle, sending projection instruction information to the second projector, where the projection instruction information is used to instruct the second projector to synchronously project the current projection content of the first projector.
Through the steps, under the condition that the projection obstacle information indicates that the first projection area has obstacles and the second projection area has no obstacles, the projection instruction information is sent to the second projector and used for indicating the second projector to project the current projection content of the first projector synchronously, so that the problems that the projection of the projector is easy to be shielded and the projection picture is influenced are solved, and the quality of the projection picture is improved.
In this embodiment, before the projection obstacle information of the projection area is acquired, the Wi-Fi pairing is started to connect the first projector and the second projector.
In this embodiment, before sending the projection instruction information to the second projector, the calibration point information of the current projection content of the first projector is sent to the second projector, where the calibration point information is used to provide a basis for calibrating the current projection content projected by the second projector.
In this embodiment, when the current projection content is video information, the first projector sends the video information to the second projector, and sends a frame number of the currently projected video information to the second projector, where the frame number is used to provide a synchronization basis for the second projector to synchronously play the current projection content.
In this embodiment, the acquiring of the projection obstacle information of the projection area includes one of:
receiving a time when the obstacle enters the projection area, wherein the time is determined by: and when the obstacle is detected to enter the projection area, calculating the time for the obstacle to enter the projection area according to the moving speed of the obstacle.
In this embodiment, the acquisition of the projection obstacle information and the transmission of the projection instruction information may be acquisition by the first projector, acquisition by the second projector, or control device of the second projector that controls the first projector.
In an embodiment where the first projector is a control terminal of the above method, fig. 3 is a flowchart of a projection method of the projector according to an embodiment of the present invention, as shown in fig. 3,
step S302, the first projector acquires projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of the first projector has an obstacle or not and whether a second projection area of the second projector has an obstacle or not;
step S304, 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 projection instruction information to the second projector, where the projection instruction information is used to instruct the second projector to synchronously project the current projection content.
In an embodiment where the control terminal is a control device of the first projector and the second projector, fig. 4 is a flowchart three of a projection method of the projector according to an embodiment of the present invention, as shown in fig. 4, the flowchart includes the following steps:
step S402, the control device detects whether a first projection area of a first projector has an obstacle or not, and simultaneously detects whether a second projection area of a second projector has an obstacle or not to generate projection obstacle information, wherein the first projector synchronizes the current projection content to the second projector;
step S404, in a case that the first projection area has an obstacle and the second projection area has no obstacle, the control device sends projection instruction information to the second projector, where the projection instruction information is used to instruct the second projector to synchronously project and synchronize the current projection content.
In an embodiment where the second projector is a control terminal of the method, fig. 5 is a flowchart of a projection method of the projector according to an embodiment of the present invention, and as shown in fig. 5, the flowchart includes the following steps:
step S502, the second projector acquires projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of the first projector has an obstacle or not and whether a second projection area of the second projector has an obstacle or not;
step S504, when 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 apparatus of a projector is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description of the apparatus is omitted. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 6 is a block diagram showing a first structure of a projection apparatus of a projector according to an embodiment of the present invention, as shown in fig. 6, the apparatus includes:
a first obtaining module 62, configured to obtain projection obstacle information of a projection area, where the projection obstacle information is used to indicate whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
a sending module 64, configured to send projection indication information to the second projector when the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle, where the projection indication information is used to indicate the second projector to synchronously project the current projection content of the first projector.
By the above device, the first obtaining module 62 obtains projection obstacle information of a projection area, where the projection obstacle information is used to indicate whether there is an obstacle in the first projection area of the first projector, and whether there is an obstacle in the second projection area of the second projector, and the sending module 64 sends projection instruction information to the second projector when the projection obstacle information indicates that there is an obstacle in the first projection area, and the second projection area has no obstacle, where the projection instruction information is used to indicate the second projector to project the current projection content of the first projector synchronously, so that the problems that the projection of the projector is easily blocked and the projection picture is affected are solved, and the quality of the projection picture is improved.
Fig. 7 is a block diagram of a second structure of a projection apparatus of a projector according to an embodiment of the present invention, as shown in fig. 7, in addition to the modules of fig. 6, the apparatus further includes:
and the pairing module 72 is configured to start wireless fidelity Wi-Fi pairing to connect the first projector and the second projector before acquiring the projection obstacle information of the projection area.
Fig. 8 is a block diagram of a third structure of a projection apparatus of a projector according to an embodiment of the present invention, as shown in fig. 8, in addition to the modules of fig. 6, the apparatus further includes:
a first synchronization module 82, configured to send calibration point information of the current projection content to the second projector before sending projection instruction information to the second projector, where the calibration point information is used to provide a basis for calibrating the current projection content projected by the second projector.
Fig. 9 is a block diagram of a projection apparatus of a projector according to an embodiment of the present invention, which includes, as shown in fig. 9, in addition to the blocks of fig. 6:
the second synchronization module 92 is configured to send the video information to the second projector when the current projection content is the video information, and send a frame number of the currently projected video information to the second projector, where the frame number is used to provide a synchronization basis for the second projector to synchronously play the current projection 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, where the time is determined by: and when the obstacle is detected to enter the projection area, calculating the time for the obstacle to enter the projection area according to the moving speed of the obstacle.
Fig. 10 is a block diagram of a projection apparatus of a projector according to an embodiment of the present invention, which is located in a second projector, and as shown in fig. 10, the apparatus includes:
a second obtaining module 1002, configured to obtain projection obstacle information of a projection area, where the projection obstacle information is used to indicate whether a first projection area of a first projector has an obstacle or not, and whether a second projection area of the second projector has an obstacle or not;
a projection module 1004, configured to synchronously project the current projection content of the first projector when 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, including: a first projector and a second projector;
the first projector synchronizing current projected content of the first projector to the second projector;
the first projector acquires projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of the first projector has an obstacle or not and whether a second projection area of the second projector has an obstacle or not;
under the condition 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 instruction information to the second projector;
the second projector receives the projection indication information, and the second projector synchronously projects the current projection content.
The present invention will be described in detail with reference to preferred examples and embodiments.
In the preferred embodiment, a method of using a plurality of projectors to work cooperatively is used, so that a light-blocking obstacle in front of the projectors can be automatically identified, and when encountering the obstacle, a second projector is automatically started to perform picture compensation, so that the completeness and continuity of the projected picture are ensured, as shown in fig. 1, in the moving process of the obstacle, the picture seen by a spectator a area and the picture seen by a spectator B area are complete and continuous, and no shadow of the movement of the obstacle exists on the projection surface.
In addition, the scene of the collaborative projection can also be suitable for being supplemented by one projector when an accident happens to the other projector.
Fig. 11 is a schematic diagram of multi-projection automatic cooperative work according to an embodiment of the present invention, and as shown in fig. 11, the multi-projection automatic cooperative work includes a projection light machine (a projector a and a projector B), a light machine control module, an obstacle detection module, an obstacle speed measurement module, a picture rectification module, a picture synchronization module, a picture buffering module, and a connection module.
The preferred embodiment requires two or more projectors, and when one projector detects that there is a possibility of an obstacle passing through the projection light area, the second projector is automatically started to perform picture compensation.
In fig. 11, the projector a is a main projector, when projection is performed, both the audience a and the audience B can see a complete projection picture, but when an obstacle enters a projection area of the projector a, the audience a and the audience B can see a shadow of the obstacle on the projection plane due to light blockage of the projector, at this time, when the moving obstacle is in stage 1, that is, when the obstacle is within a projection range of the projector a, the projector a is turned off, the projector B is turned on, the content of a picture projected by the projector B is the same as that of the projector a, and at this time, both the audience a and the audience B can see a complete and coherent picture. The barrier moves to the projection range of the projector B, namely the barrier 2 stage shown in FIG. 11, at which the projector is turned on and the projector B is turned off, and by this method, it can be ensured that the audience A area and the audience B area can both see the complete projection picture.
Fig. 12 is a schematic flowchart of a process of establishing a connection between two projectors according to an embodiment of the present invention, as shown in fig. 12, including:
s1201, in the device preparation phase, a projector a and a projector B are connected, where the projector a and the projector B may be connected by using WIFI or other high-speed transmission methods, such as a wired method.
And S1202, completing picture synchronization after connection is established.
And S1203, when the projector is projecting, if an obstacle exists in the projection range of the projector which is projecting, automatically switching to another projector.
Device pairing procedure embodiment
Before the projector A and the projector B carry out the collaborative projection, equipment pairing is required to be carried out so as to achieve the purpose of collaborative work.
In this embodiment, taking WiFi connection as an example, fig. 13 is a schematic flowchart of WiFi pairing of two projectors according to an embodiment of the present invention, as shown in fig. 13, including:
s1301, preparing a projector A to be in a collaborative projection state after the projector A is placed;
s1302, the projector A opens the WIFI to wait for the pairing of the projector B;
s1303, projector B enters into Service Set Identifier (SSID for short) of projector A in coordinated projection state
S1304, connecting the projector B to the projector A in a WIFI mode, and entering a cooperative working state after the projector A receives the information;
s1305, projector a and projector B proceed to a picture rectification step.
Since the projection range needs to be guaranteed to be consistent when the projector a and the projector B project pictures to be consistent, a picture calibration operation and a keystone correction operation are performed before the projectors start to be prevented, a projection picture calibration module method embodiment. Fig. 14 is a schematic flowchart of the calibration of the projection screen of the two projectors according to the embodiment of the present invention, as shown in fig. 14, including:
s1401, projector A projects picture and performs trapezoidal correction
S1402 the projector projects the calibration picture to determine a projection range. FIG. 15 is a schematic diagram of a four-point calibration screen, which may employ four points of the four-point calibration screen ABCD for marking the range projected by projector A, as shown in FIG. 15, in accordance with an embodiment of the present invention.
S1403, the projector B projects a picture, and determines the same projection range according to the calibration points of the projector a, and it should be described in detail that the calibration method herein may have multiple calibration methods, and in the first method, the projector B may also project four calibration points, and a user manually coincides with the calibration points of the projector a according to the calibration points of the projector B, so that it can be ensured that the projection picture range of the projector B and the projection range of the projector a are consistent. In the second method, a camera is installed in the projector B in the direction of the projector light machine, the camera can perform automatic picture calibration according to the calibration points projected by the projector a, and display the picture range over which the projector light machine of the projector B is aligned on the liquid crystal screen of the projector B, the user observes the calibration points of the projector a according to the liquid crystal screen of the projector B, and the projector B performs automatic calibration after the calibration conditions are met.
After determining that the projection range of the projector a is kept coincident with the projection range of the projector B in S1404, trapezoidal correction is performed.
S1405 projector a and projector B finish the picture calibration.
In the embodiment of the automatic frame synchronization module, fig. 16 is a schematic flowchart of the automatic frame synchronization process according to the embodiment of the present invention, as shown in fig. 16, after the projector is placed, the frame synchronization module is required to synchronize frames, when the user plays a video, the frame synchronization requirement is high, and when the user plays a static frame or a frame with low continuity requirement, the frame synchronization requirement can be reduced. The automatic picture synchronization module is divided into two synchronization modes, namely media and static, so as to meet different requirements.
S1601, starting to synchronize pictures by the projector A and the projector B;
s1602, if the played video file is a video file, jumping to S1604;
s1603, if the static picture is played, the picture is directly sent to a projector B by the projector A to be subjected to mirror image processing, and the process can be finished by miracast technology;
s1605, the projector A sends the video file to a 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, wherein the requirement is the lowest playing requirement, namely the video playing condition is met, and the requirement threshold value can be adjusted according to the actual situation;
s1607, the projector starts playing and simultaneously sends a playing instruction 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 when playing;
and S1610, the projector B detects whether the playing is synchronous or not through the comparison of the frame numbers. If synchronous, continuing to circularly detect the frame number in the playing process;
s1611, the projector B sends a frame number to compare and detect that the playing is asynchronous, the projector B judges and automatically adjusts the playing progress according to the frame number so as to achieve the consistency with the playing progress of the projector A, and after the playing progress is synchronous, the synchronization degree is continuously detected by a method for detecting the frame number.
In the embodiment of the obstacle detection module, when the projector a and the projector B cooperate, it is necessary to determine whether the projector a and the projector B have an obstacle in the image projection range in advance, so that the obstacle detection module is required to determine the obstacle. There are many ways of determining, which may be to use a camera to collect the picture in the projection range, or to use an infrared device to collect the moving object in the projection range, and the collection range is necessarily larger than the projection range no matter the camera or the infrared device, and the distance sensor is used here to explain the distance.
Fig. 17 is a schematic flow chart of obstacle detection according to an embodiment of the present invention, as shown in fig. 17,
s1701, the distance sensor 1 detects a distance along a projection boundary;
s1702, judging whether an obstacle enters or not by the sensor 2 and the sensor 3;
and S1703, outputting a judgment result.
And a distance sensor is arranged around the projection optical machine to scan the distance in the projection direction. The description will be made with respect to one side of the projection screen.
Fig. 18 is a schematic diagram illustrating the principle of obstacle detection according to an embodiment of the present invention, where 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, and if the CD distance decreases, it is determined that an obstacle enters, but if the CD distance decreases and is still far greater than the AD distance, it is not determined that an obstacle enters. When the obstacle enters the BD range, the moving speed of the obstacle can be calculated according to the time when the obstacle passes through the CD and the BD. The obstacle judging module can judge whether the obstacle enters the range of the projector in advance according to the moving speed of the obstacle.
Fig. 19 is a block diagram of a configuration of a cooperative system of two projectors according to an embodiment of the present invention, as shown in fig. 19, including: a first obstacle judgment module 1902, a second obstacle judgment module 1904, an optical engine control module 1906, a first projection optical engine 1908, and a second projection optical engine 1910.
In the embodiment of the optical-mechanical control module 1906, since the optical-mechanical control module 1906 needs to switch the optical-mechanical systems for different situations when the projector a (the first projector 1908) and the projector B (the second projector 1910) cooperate with each other, the obstacle determining module 1904 determines to switch to the projector B when the projector a is shielded, and to switch to the projector a when the projector B is shielded, and if the projector B is shielded at the same time, the optical-mechanical systems are kept unchanged.
In an apparatus system embodiment, fig. 20 is a schematic diagram of obstacle detection according to an embodiment of the present invention, and as shown in fig. 20, the steps of a general embodiment in which projector a and projector B cooperate include:
s2001, start to set projector a and projector B;
s2002, the picture calibration module calibrates the pictures of the projector A and the projector B;
s2003, synchronizing the pictures of the projector A and the projector B by the picture synchronization module;
s2004, projector a starts projection;
s2005, the obstacle judging module starts to judge whether the obstacle passes through the projection range of the projector A and the projector B;
s2006, if an obstacle passes through, the optical-mechanical control module controls the optical-mechanical switch to switch between the projector A and the projector B;
and S2007, ending.
In the above embodiment, the user connects the wireless routing device to the wired network, and turns on the power switch. And searching the Bluetooth of the wireless routing device by using the mobile phone for pairing. After the pairing is completed, the user opens a setting program in the mobile phone, sets the hot spot, the encryption mode, the password and the access mode of the WAN port of the router, and the router becomes effective after the setting is successful. The device is generally used for business and travel users, the hotel is frequently changed, and a wireless routing device which can be carried about and is convenient to set is needed.
In addition to the implementation of the above embodiments, embodiments of the present invention further include:
1. the two projectors can be simultaneously controlled by a single control end to carry out picture cooperative output, and a high-speed connection mode is adopted to keep picture synchronization, and if the high-speed connection mode is adopted, a picture buffering module can be omitted for picture buffering.
2. The partial area of the main projector can be subjected to picture compensation in multiple directions by the multiple projectors so as to achieve a better compensation effect.
3. Can get into the size of barrier by distance sensor cooperation response, if two projectors are sheltered from simultaneously, can open the projecting apparatus that shelters from the scope and little and carry out the projection.
In another embodiment, for an outdoor projection scene with a complex projection environment, the projection mode is very advantageous, and multi-directional picture compensation can be performed by using the advantage 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 located on two sides of a projected surface, and in a case where one side is blocked, the other projector is turned on, so that the probability of blocking a picture can be greatly reduced.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in a plurality of processors.
The embodiment of the invention also provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program codes for executing 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 embodiments:
optionally, in this embodiment, the storage medium may include, but is not limited to: various media that can store the program codes of the method steps of the above embodiments, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Optionally, in this embodiment, the processor executes the method steps of the above embodiments according to the program code stored in the storage medium.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A projection method of a projector, comprising:
acquiring projection obstacle information of a projection area, wherein the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
sending projection indication information to the second projector under the condition that the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle, wherein the projection indication information is used for indicating the second projector to synchronously project the current projection content of the first projector;
the acquiring of the projection obstacle information of the projection area includes:
receiving a time when the obstacle enters the projection area, wherein the time is determined by: and when the obstacle is detected to enter the projection area, calculating the time for the obstacle to enter the projection area according to the moving speed of the obstacle.
2. The method of claim 1, wherein obtaining projection obstacle information for a projection area comprises:
starting a wireless fidelity Wi-Fi pairing connection with the first projector and the second projector.
3. The method of claim 1, wherein prior to sending projection indication information to the second projector, comprising,
and sending calibration point information of the current projection content of the first projector to the second projector, wherein the calibration point information is used for providing basis for calibrating the current projection content projected by the second projector.
4. The method of claim 1, wherein synchronizing the current projected content of the first projector to the second projector comprises:
and under the condition that 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 projector, wherein the frame number is used for providing a synchronous basis for the second projector to synchronously play the current projection content.
5. A projection apparatus of a projector, comprising:
the projector comprises a first acquisition module, a second acquisition module and a display module, wherein the first acquisition module is used for acquiring projection obstacle information of a projection area, and the projection obstacle information is used for indicating whether a first projection area of a first projector has an obstacle or not and whether a second projection area of a second projector has an obstacle or not;
a sending module, configured to send projection indication information to the second projector when the projection obstacle information indicates that the first projection area has an obstacle and the second projection area has no obstacle, where the projection indication information is used to indicate the second projector to synchronously project current projection content of the first projector;
the first obtaining module comprises:
a receiving unit, configured to receive a time when the obstacle enters the projection area, where the time is determined by: and when the obstacle is detected to enter the projection area, calculating the time for the obstacle to enter the projection area according to the moving speed of the obstacle.
6. The apparatus of claim 5, further comprising:
and the pairing module is used for starting wireless fidelity Wi-Fi to pair and connect the first projector and the second projector before acquiring the projection obstacle information of the projection area.
7. The apparatus of claim 5, further comprising,
the first synchronization module is configured to send calibration point information of current projection content to the second projector before sending projection instruction information to the second projector, where the calibration point information is used to provide a basis for calibrating the current projection content projected by the second projector.
8. The apparatus of claim 5, further comprising:
and the second synchronization module is used for sending the video information to the second projector under the condition that the current projection content is the video information, and sending the frame number of the currently projected video information to the second projector, wherein the frame number is used for providing a synchronization basis for the second projector to synchronously play the current projection content.
Priority Applications (2)
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| CN201510870491.XA CN106817550B (en) | 2015-12-01 | 2015-12-01 | Projection method and device of projector |
| PCT/CN2016/077267 WO2017092199A1 (en) | 2015-12-01 | 2016-03-24 | Projecting method and device for projector |
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| CN201510870491.XA CN106817550B (en) | 2015-12-01 | 2015-12-01 | Projection method and device of projector |
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| DE102018206988B4 (en) * | 2018-05-04 | 2021-05-27 | Audi Ag | Projection device for a motor vehicle, in particular for a passenger car, motor vehicle and method for operating such a projection device |
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| JPH07162743A (en) * | 1993-12-03 | 1995-06-23 | Matsushita Electric Ind Co Ltd | Image processor for projector, and projector |
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| US6860604B1 (en) * | 2004-01-09 | 2005-03-01 | Imatte, Inc. | Method and apparatus for inhibiting the projection of a shadow of a presenter onto a projection screen |
| JP4270264B2 (en) * | 2006-11-01 | 2009-05-27 | セイコーエプソン株式会社 | Image correction apparatus, projection system, image correction method, image correction program, and recording medium |
| US8267524B2 (en) * | 2008-01-18 | 2012-09-18 | Seiko Epson Corporation | Projection system and projector with widened projection of light for projection onto a close object |
| JP5683097B2 (en) * | 2009-12-15 | 2015-03-11 | キヤノン株式会社 | Projection system |
| FR2962561B1 (en) * | 2010-07-09 | 2013-03-08 | Thales Sa | VISUALIZATION SYSTEM COMPRISING A SECURITY DISPLAY DEVICE |
| JP2013033206A (en) * | 2011-07-06 | 2013-02-14 | Ricoh Co Ltd | Projection display device, information processing device, projection display system, and program |
| EP2769265B1 (en) * | 2011-10-20 | 2021-06-16 | Imax Corporation | Invisibility or low perceptibility of image alignment in dual projection systems |
| CN102495516B (en) * | 2011-11-28 | 2014-03-26 | 广东威创视讯科技股份有限公司 | Display system and method |
| CN103293836A (en) * | 2012-02-27 | 2013-09-11 | 联想(北京)有限公司 | Projection method and electronic device |
| CN104349215A (en) * | 2013-08-08 | 2015-02-11 | 联想(北京)有限公司 | Switching method and first electronic equipment |
| CN104754262A (en) * | 2013-12-30 | 2015-07-01 | 光宝科技股份有限公司 | Projection display device and related display method thereof |
| CN104461003B (en) * | 2014-12-11 | 2019-02-05 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
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| JPH07162743A (en) * | 1993-12-03 | 1995-06-23 | Matsushita Electric Ind Co Ltd | Image processor for projector, and projector |
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