CN112598589A

CN112598589A - Laser projection system and image correction method

Info

Publication number: CN112598589A
Application number: CN202011502335.5A
Authority: CN
Inventors: 张冬冬
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-04-02

Abstract

The embodiment of the application provides a laser projection system and an image correction method, and solves the technical problem that in the prior art, the image correction efficiency is low. The laser projection system includes: the device comprises a laser projection host, a laser projection screen, a second display and a main controller. The main controller is respectively connected with the laser projection host and the second display. The master controller is configured to: and responding to the received image correction instruction, and acquiring the image to be corrected and prompt information corresponding to the image to be corrected. And controlling the laser projection host to project the image to be corrected to the laser projection screen. And controlling the second display to display prompt information. The laser projection host is configured to: and projecting the image to be corrected to a laser projection screen. The laser projection screen is configured to: and displaying the image to be corrected projected by the laser projection host. The second display is configured to: and displaying prompt information sent by the laser projection host.

Description

Laser projection system and image correction method

Technical Field

The application relates to the technical field of intelligent televisions, in particular to a laser projection system and an image correction method.

Background

With the continuous development of the technical field of the intelligent television, multimedia resources such as audio, video, pictures and the like can be displayed for a user through the laser projection equipment. The laser projection equipment comprises a laser projection host and a laser projection screen. And in the working process of the laser projection equipment, the laser projection host is controlled to project multimedia resources on the laser projection screen. However, when an included angle exists between the projected image projected by the laser projection host and the laser projection screen and the distortion of the laser projection host is large, the projected image is deformed, which affects the normal use of the laser projection equipment.

When the projected image is distorted, the conventional laser projection host typically performs image correction by projecting a correction chart (as shown in fig. 1) on the laser projection screen. However, when the laser projection host projects the correction chart on the laser projection screen, the user does not know how to perform image correction using the correction chart, thereby reducing the efficiency of image correction.

Disclosure of Invention

The application provides a laser projection system and an image correction method, which are used for improving the efficiency of image correction, and the technical scheme is as follows:

in a first aspect, the present application provides a laser projection system comprising: the device comprises a laser projection host, a laser projection screen, a second display and a main controller. The main controller is respectively connected with the laser projection host and the second display.

The master controller is configured to: and responding to the received image correction instruction, and acquiring the image to be corrected and prompt information corresponding to the image to be corrected. And controlling the laser projection host to project the image to be corrected to the laser projection screen. And controlling the second display to display prompt information.

The laser projection host is configured to: and projecting the image to be corrected to a laser projection screen.

The laser projection screen is configured to: and displaying the image to be corrected projected by the laser projection host.

The second display is configured to: and displaying prompt information sent by the laser projection host.

Further, when the second display is disposed on the laser projection host, the laser projection system further includes: and an auxiliary controller. The main controller is connected with the auxiliary controller.

The main controller is configured to: and sending a first display instruction to the auxiliary controller. The first display instruction is used for instructing the second display to display the prompt message.

The secondary controller is configured to: and receiving a first display instruction and controlling a second display to display prompt information.

Further, when the second display is a micro projection system, the micro projection system further includes: and a micro projection host. The main controller is connected with the micro projection host.

The main controller is configured to: and sending a projection instruction to the micro projection host. The projection instruction is used for instructing the micro projection host to project prompt information to the second display.

The micro-projection host is configured to: and receiving a projection instruction and projecting prompt information to the second display.

Further, when the second display is a display of the terminal, the main controller is in communication connection with the terminal.

The main controller is configured to: and sending a second display instruction to the terminal. The second display instruction is used for indicating the terminal to display the prompt message.

The terminal is configured to: and receiving a second display instruction and displaying prompt information.

Further, the laser projection system further includes: a communicator. The main controller is in communication connection with the terminal through the communicator.

The communicator is configured to: and receiving a second display instruction sent by the main controller. And sending a second display instruction to the terminal.

Further, the laser projection system is an ultra-short-focus laser projection system.

Further, the master controller is further configured to:

and adjusting the image to be corrected in response to the image correction operation performed by the user so that the adjusted image to be corrected meets a preset condition.

Further, the laser projection system further includes: a sensor. The main controller is connected with the sensor.

The sensor is configured to: and acquiring an image to be corrected displayed by the laser projection screen, and sending the image to be corrected to the main controller.

The main controller is configured to: and responding to an image correction operation performed by a user, and adjusting the image to be corrected according to the image to be corrected sent by the sensor.

In a second aspect, the present application provides an image correction method, which is applied to the main controller in the laser projection system provided in the first aspect, and the image correction method includes:

responding to a received image correction instruction, and acquiring an image to be corrected and prompt information corresponding to the image to be corrected;

controlling a laser projection host to project an image to be corrected to a laser projection screen;

and controlling the second display to display prompt information.

Further, the image correction method further includes:

In a third aspect, a computing device is provided, comprising:

a memory for storing program instructions;

and the processor is used for calling the program instructions stored in the memory and executing the method of the second aspect according to the obtained program.

Based on the technical scheme, the laser projection system, the image correction method and the computing equipment provided by the application can control the second display to display the prompt information corresponding to the image to be corrected while controlling the laser projection host to project the image to be corrected to the laser projection screen. In this case, the prompt information can be visually displayed to the user through the second display, so that the user can perform image correction operation according to the prompt information, the technical problem that the user does not know how to finish image correction by using the correction chart in the prior art is solved, and the efficiency of image correction is improved.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings needed to be used in the description of the embodiments or the prior art, and obviously, the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without inventive labor.

FIG. 1 is a schematic diagram of a calibration chart displayed by a laser projection apparatus provided in the prior art;

fig. 2 is a schematic structural diagram of a laser projection system according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a laser projection host according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of another laser projection host provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of another laser projection host provided in the embodiment of the present application;

FIG. 6 is a schematic diagram of another laser projection system according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another laser projection system according to an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of another laser projection system according to an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of another laser projection system according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of another laser projection system according to an embodiment of the present disclosure;

fig. 11 is a schematic flowchart of an image correction method according to an embodiment of the present application;

fig. 12 is a schematic view of an application scenario in which a laser projection system interacts with a control device and a server according to an embodiment of the present application;

fig. 13 is a block diagram of a configuration of a control device according to an embodiment of the present application;

fig. 14 is a schematic hardware structure diagram of a laser projection apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The concept to which the present application relates will be first explained below with reference to the drawings. It should be noted that the following descriptions of the concepts are only for the purpose of facilitating understanding of the contents of the present application, and do not represent limitations on the scope of the present application.

The term "module," as used in various embodiments of the present application, may refer to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "remote control" as used in the various embodiments of the present application refers to a component of an electronic device (e.g., a multimedia controller, a laser projection television, or a micro-projection device as disclosed herein) that is capable of wirelessly controlling the electronic device, typically over a relatively short range of distances. The component may be generally connected to an electronic device using infrared and/or Radio Frequency (RF) signals and/or bluetooth, and may also include functional modules such as wireless fidelity (WIFI), wireless, Universal Serial Bus (USB), bluetooth, and motion sensor. For example: the hand-held touch remote controller replaces most of the physical built-in hard keys in the common remote control device with the user interface in the touch screen.

The term "gesture" as used in the embodiments of the present application refers to a user behavior used to express an intended idea, action, purpose, or result through a change in hand shape or an action such as hand movement.

The term "hardware system" used in the embodiments of the present application may refer to a physical component having computing, controlling, storing, inputting and outputting functions, which is formed by a mechanical, optical, electrical and magnetic device such as an Integrated Circuit (IC), a Printed Circuit Board (PCB) and the like. In various embodiments of the present application, a hardware system may also be referred to as a motherboard (or chip).

As described in the background, existing laser projection hosts typically perform image correction by projecting a correction chart (shown in fig. 1) on a laser projection screen when a projected image is distorted. However, when the laser projection host projects the correction chart on the laser projection screen, the user does not know how to perform image correction using the correction chart, thereby reducing the efficiency of image correction.

Based on the above problem, embodiments of the present application provide a laser projection system and an image correction method, which can control a laser projection host to project an image to be corrected to a laser projection screen and control a second display to display prompt information corresponding to the image to be corrected. In this case, the prompt information can be visually displayed to the user through the second display, so that the user can perform image correction operation according to the prompt information, the technical problem that the user does not know how to finish image correction by using the correction chart in the prior art is solved, and the efficiency of image correction is improved.

Fig. 2 is a schematic diagram of a laser projection system 10 according to the present disclosure. As shown in fig. 2, the laser projection system 10 includes: a laser projection host 201, a laser projection screen 202, a second display 203, and a master controller 204.

The main controller 204 is connected to the laser projection host 201 and the second display 203, respectively.

The master controller 204 is configured to: and responding to the received image correction instruction, and acquiring the image to be corrected and prompt information corresponding to the image to be corrected. The laser projection host 201 is controlled to project an image to be corrected to the laser projection screen 202. Controls the second display 203 to display the prompt message.

In particular, the master controller 204 is used to control the operation of the overall laser projection system 10. When the projected image of the laser projection host 201 is deformed, the user may perform an operation for adjusting the projected image of the laser projection host 201. The laser projection host 201 generates an image correction instruction in response to an operation performed by a user, and sends the image correction instruction to the main controller 204.

Optionally, the user may execute an operation of triggering image correction on a control key for image correction on the laser projection host 201, may also execute an operation of triggering image correction through a remote controller corresponding to the laser projection host 201, and may also execute an operation of triggering image correction through a terminal in communication connection with the laser projection host 201, which is not limited in this disclosure.

The main controller 204, upon receiving the image correction instruction, acquires an image to be corrected (e.g., the correction chart shown in fig. 1) and prompt information (e.g., an operation procedure of the correction chart, a notice, etc.) corresponding to the image to be corrected in response to the received image correction instruction, and controls the laser projection host 201 to project the image to be corrected to the laser projection screen 202 and the second display 203 to display the prompt information. Therefore, the prompt information can be visually displayed to the user through the second display 203, so that the user can execute the image correction operation according to the prompt information, the technical problem that the user does not know how to finish the image correction by using the correction chart in the prior art is solved, and the image correction efficiency is improved.

Optionally, when the main controller 204 acquires the image to be corrected and the prompt information corresponding to the image to be corrected, it may send a request message for requesting the image to be corrected and the prompt information to the server, and receive the image to be corrected and the prompt information sent by the server.

Optionally, when the main controller 204 obtains the image to be corrected and the prompt information corresponding to the image to be corrected, the main controller may also read a pre-stored correspondence between the image correction instruction and the image to be corrected and the prompt information, and determine the image to be corrected and the prompt information.

The laser projection host 201 is configured to: the image to be corrected is projected towards the laser projection screen 202.

Specifically, the laser projection host 201 is mainly used for projecting the multimedia resource sent by the main controller 204.

Fig. 3 shows a schematic structural diagram of a laser projection host 201, which is generally divided into a light source portion 301, a light machine portion 302, and a lens portion 303 according to optical system functions, wherein the light source portion 301 and the light machine portion 302 are also referred to as an optical engine.

The optical transmitter section 302 includes an optical modulation device, which is a core component of the system. Light modulation devices (also called light valves) can be divided into transmissive LCD, LCOS, and dmd (digital Micro mirror device) chips. The DMD chip is applied to a dlp (digital Light processing) projection architecture.

The DMD digital micromirror array is the core device of the entire projection architecture. The monolithic DMD application will be described below as an example. The DMD is a reflective light valve device, and the illumination light beam output from the light source 301 generally needs to pass through an illumination light path at the front end of the DMD, and after passing through the illumination light path, the illumination light beam conforms to the illumination size and the incident angle required by the DMD. The DMD surface includes thousands of tiny mirrors, each of which can be individually driven to deflect, such as plus or minus 12 degrees or plus or minus 17 degrees in a DMD chip provided by TI. The light reflected by the positive deflection angle is called ON light, the light reflected by the negative deflection angle is called OFF light, and the OFF light is ineffective light and generally hits the shell or is absorbed by a light absorption device. The ON light is an effective light beam that is irradiated by the illumination light beam received by a minute mirror ON the surface of the DMD light valve and is incident ON the lens portion 303 through a positive deflection angle for projection imaging.

The lens portion 303 includes a multi-lens assembly, which is generally divided into a front group, a middle group, and a rear group in a three-stage manner, or a front group and a rear group in a two-stage manner, where the front group is a lens group near the light emitting side of the projection apparatus, and the rear group is a lens group near the light emitting side of the light modulation device.

The laser projection screen 202 is configured to: and displaying the image to be corrected projected by the laser projection host 201.

Specifically, the laser projection screen 202 is a projection display screen, and the specific type of display device, size and resolution of the laser projection screen 202 are not limited, and it will be understood by those skilled in the art that the laser projection screen 202 may be modified in performance and configuration as desired.

The second display 203 is configured to: and displaying prompt information sent by the laser projection host 201.

Optionally, the second display 203 may also display system warning information, system error information, or important system information such as current mute information when the main controller 204 performs image correction.

Further, as shown in fig. 4, a second display 203 may be disposed on the laser projection host 201. When the second display 203 is disposed on the laser projection host 201, the laser projection system 10 further includes: an auxiliary controller (not shown in fig. 4). The primary controller 204 is connected to the secondary controller.

The master controller 204 is specifically configured to: and sending a first display instruction to the auxiliary controller. The first display instruction is used to instruct the second display 203 to display the prompt message.

The secondary controller is configured to: and receiving a first display instruction and controlling the second display 203 to display prompt information.

Specifically, when the second display 203 is disposed on the laser projection host 201, each pixel in the second display 203 is divided into three colors, i.e., so-called three primary colors, of red, green, and blue, and various colors can be mixed by using the three colors, so that the second display 203 can display different screen contents.

Optionally, the second display 203 may also display time information, weather information, notification information, and the like at the current time when the laser projection host 201 projects a normal image onto the laser projection screen 202.

Illustratively, as shown in fig. 5, the second display 203 may display: "human eye protection has started", "6 months, 16 days tuesday 20:00PM2.5 cloudy", lyrics: such as "often go home to see", "overheat warning, various fault warning boards", etc.

Further, as shown in FIG. 6, the laser projection system 10 may also include a micro-projection system 20. In this case, the second display 203 is a miniature projection system 20. When the second display 203 is the micro projection system 20, the micro projection system further comprises: a micro-projection host 205. The main controller 204 is connected to a micro-projection host 205.

The master controller 204 is specifically configured to: a projection command is sent to the micro-projection host 205. The projection instructions are used to instruct the micro-projection host 205 to project the hint information to the second display 203.

The micro-projection host 205 is configured to: receiving a projection instruction and projecting a prompt message to the second display 203.

Further, as shown in fig. 7, the second display 203 may also be a display of the terminal 206. When the second display 203 is a display of the terminal 206, the main controller 204 is communicatively connected to the terminal 206.

The master controller 204 is specifically configured to: a second display instruction is sent to the terminal 206. The second display instruction is used to instruct the terminal 206 to display the prompt message.

The terminal 206 is configured to: and receiving a second display instruction and displaying prompt information.

Further, as shown in fig. 8, when the second display 203 is a display of the terminal 206, the laser projection system 10 further includes: a communicator 207. The main controller 204 is communicatively connected to the terminal 206 via the communicator 207.

The communicator 207 is configured to: and receiving a second display instruction sent by the main controller 204. A second display instruction is sent to the terminal 206.

Further, as shown in fig. 9, the laser projection system 10 provided in the embodiment of the present application is an ultra-short-focus laser projection system.

In the ultra-short-focus laser projection system, the lens portion of the ultra-short-focus laser projection host 201 is an ultra-short-focus projection lens, and the projection ratio thereof is usually less than 0.3. The ultra-short focus projection lens comprises a refraction lens group and a reflector group, and the reflector group can be a curved reflector. The projection beam is emitted obliquely upward to the ultra-short focus laser projection screen 202 through the lens portion to form an image, which is different from a light emitting mode in which the optical axis of the projection beam is located at the perpendicular bisector of the projection picture in the conventional long focus projection, and the ultra-short focus projection lens usually has 120% -150% offset with respect to the projection picture.

Because the size of the DMD chip is very small, for example, the size of the DMD chip provided by the current TI is 0.66 inch and 0.47 inch, and the size of the projection screen is usually over 70 inches, for example, it is commonly used between 80 inches and 150 inches, for the lens portion, not only the hundreds times of amplification is realized, but also the aberration is corrected, and the resolution is good, so that the high-definition projection screen is presented, and the design difficulty of the ultra-short-focus projection lens is far greater than that of the long-focus projection lens.

In the ultra-short focus projection device, the perpendicular line of the light-emitting surface of the DMD light valve is parallel to the optical axis of the lens, but is not coincident, that is, the DMD is offset to the lens portion, the light beam emitted from the light-emitting surface of the DMD obliquely enters the lens portion at a certain angle, and is transmitted and reflected by the partial areas of the plurality of lenses, and finally the projection light beam obliquely upwards exits from the lens portion.

When the ultra-short-focus laser projection system 10 is used for projection imaging, the ultra-short-focus laser projection screen 202 with high gain and contrast is usually used in combination, so that a high-brightness and high-contrast projection picture can be well restored.

Optionally, the ultra-short-focus laser projection screen 202 is a fresnel optical screen. Along the incident direction of the projection light beam, the Fresnel lens comprises a substrate layer, a diffusion layer, a uniform medium layer, a Fresnel lens layer and a reflection layer. The thickness of the Fresnel optical screen is usually 1-2 mm, wherein the thickness proportion occupied by the substrate layer is the largest. The substrate layer is also used as a supporting layer structure of the whole screen, and has certain light transmittance and hardness. The projection light beam firstly transmits through the substrate layer, then enters the diffusion layer for diffusion, and then enters the uniform medium layer, wherein the uniform medium layer is a uniform light-transmitting medium, and the material of the uniform medium layer is the same as that of the substrate layer. The light beam transmits through the uniform medium layer and enters the Fresnel lens layer, the Fresnel lens layer converges and collimates the light beam, the collimated light beam is reflected by the reflecting layer and then returns back to pass through the Fresnel lens, the uniform medium layer, the diffusion layer and the substrate layer again, and the collimated light beam is incident to eyes of a user.

Further, the master controller 204 is further configured to: and adjusting the image to be corrected in response to the image correction operation performed by the user so that the adjusted image to be corrected meets a preset condition.

The preset condition may be that the definition of the adjusted image to be corrected meets the preset definition, the shape of the adjusted image to be corrected meets the preset shape, or other conditions set by people, and the preset condition is not limited in this application.

Specifically, when the main controller 204 adjusts the image to be corrected in response to the image correction operation performed by the user, the acquired image to be corrected may be identified and the correction parameter may be calculated, and the image to be corrected may be corrected according to the correction parameter.

Illustratively, the image to be corrected is taken as a correction chart. The main controller 204 first pre-processes the calibration chart, reduces the interference of ambient light, background walls, camera equipment and the like on image calibration, enhances the feature points in the calibration chart, and eliminates the false detection of false feature points. Then, the main controller 204 detects the feature points in the calibration chart and the border of the screen displaying the calibration chart, and calculates the coordinate positions of the feature points in the calibration chart. Next, the main controller 204 calculates projection information related to the laser projection host 201 from the position information of the feature point, and calculates an image correction parameter of the laser projection host 201 from the projection information and the position information of the feature point. Finally, the main controller 204 performs image correction on the correction chart according to the calculated image correction parameters.

Alternatively, the prompt information displayed on the second display 203 may be stopped after the main controller 204 adjusts the image to be corrected.

Further, as shown in fig. 10, the laser projection system 10 further includes: a sensor 208. The master controller 204 is coupled to the sensor 208.

Alternatively, the sensor 208 may be mounted on the laser projection host 201, and the image projection direction of the laser projection host 201 is the same.

The sensor 208 is configured to: the image to be corrected displayed on the laser projection screen 202 is acquired and sent to the main controller 204.

In particular, the sensor 208 may be a camera or other sensing device for acquiring images. After the laser projection screen 202 displays the image to be corrected, the sensor 208 may capture the image to be corrected displayed by the laser projection screen 202 and send the image to be corrected to the main controller 204.

In this case, the master controller 204 is specifically configured to: in response to an image correction operation performed by the user, the image to be corrected is adjusted in accordance with the image to be corrected transmitted by the sensor 208.

Based on the laser projection system 10, an embodiment of the present application provides an image correction method, which is applied to the main controller 204 provided in the above embodiment, and as shown in fig. 11, the image correction method includes: S1101-S1104.

S1101, the main controller responds to the received image correction instruction, and obtains an image to be corrected and prompt information corresponding to the image to be corrected.

And S1102, the main controller controls the laser projection host to project the image to be corrected to the laser projection screen.

And S1103, controlling the second display to display prompt information by the main controller.

Further, after the main controller controls the laser projection host to project the image to be corrected to the laser projection screen and controls the second display to display the prompt information, the image correction method further includes:

s1104, the main controller responds to the image correction operation executed by the user, and adjusts the image to be corrected so that the adjusted image to be corrected meets the preset condition.

The application provides an image correction method, which can control a laser projection host to project an image to be corrected to a laser projection screen and control a second display to display prompt information corresponding to the image to be corrected. In this case, the prompt information can be visually displayed to the user through the second display, so that the user can perform image correction operation according to the prompt information, the technical problem that the user does not know how to finish image correction by using the correction chart in the prior art is solved, and the efficiency of image correction is improved.

As shown in fig. 12, the laser projection system 10 in the embodiment of the present application is a schematic diagram of an application scenario in which the control device 400 and the server 500 interact with each other.

The control device 400 may be a remote controller 400A, which can communicate with the controller 100 through an infrared protocol communication, a bluetooth protocol communication, a ZigBee (ZigBee) protocol communication, or other short-range communication, and is used to control the controller 100 through a wireless or other wired manner. The user may input a user command through keys on the remote controller 400A, voice input, control panel input, etc., to control the controller 100. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller 400A to control the functions of the controller 100.

The control device 400 may also be an intelligent device, such as a mobile terminal 400B, a tablet computer, a notebook computer, etc., which may communicate with the controller 100 through a Local Area Network (LAN), a Wide Area Network (WAN), a Wireless Local Area Network (WLAN), or other networks, and implement control of the controller 100 through an application program corresponding to the controller 100. For example, the controller 100 is controlled using an application running on the smart device. The application may provide various controls to the User through an intuitive User Interface (UI) on a screen associated with the smart device.

For example, the mobile terminal 400B and the controller 100 may each be installed with a software application, so that connection communication between the two can be realized through a network communication protocol, and the purpose of one-to-one control operation and data communication can be further realized. Such as: a control instruction protocol can be established between the mobile terminal 400B and the controller 100, a remote control keyboard is synchronized to the mobile terminal 400B, and the function of controlling the controller 100 is realized by controlling a user interface on the mobile terminal 400B; the audio and video contents displayed on the mobile terminal 400B may also be transmitted to the controller 100, so as to implement a synchronous display function.

The server 500 may be a video server, an Electronic Program Guide (EPG) server, a cloud server, or the like.

The controller 100 may be in data communication with the server 500 through a variety of communication means. In various embodiments of the present application, the controller 100 may be allowed to be in wired or wireless communication with the server 500 via a local area network, a wireless local area network, or other network. The server 500 may provide various contents and interactions to the controller 100.

Illustratively, the controller 100 receives software program updates, or accesses a remotely stored digital media library by sending and receiving information, as well as EPG interactions. The servers 500 may be a group or groups, and may be one or more types of servers. Other web service contents such as video on demand and advertisement services are provided through the server 500.

Fig. 13 is a block diagram schematically showing the configuration of the control device 400 according to the exemplary embodiment. As shown in fig. 13, the control device 400 includes a controller 410, a communicator 430, a user input/output interface 440, a memory 490, and a power supply 480.

The control device 400 is configured to control the controller 100, and to receive an input operation command from a user, and to convert the operation command into a command recognizable and responsive to the controller 100, and to mediate interaction between the user and the controller 100. Such as: the user operates the channel up/down key of the control device 400, and the controller 100 responds to the channel up/down operation.

In some embodiments, the control apparatus 400 may be a smart device. Such as: the control device 400 may install various applications that control the controller 100 according to user requirements.

In some embodiments, the mobile terminal 400B, or other intelligent electronic device, may function similarly to the control apparatus 400 after installation of an application that operates the controller 100. Such as: the user may implement the functions of controlling the physical keys of the apparatus 400 by installing applications, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 400B or other intelligent electronic devices.

The controller 410 includes a processor 412, a RAM 413 and a ROM 414, a communication interface, and a communication bus. The controller 410 is used to control the operation of the control device 400, as well as the internal components for communication and coordination and external and internal data processing functions.

The communicator 430 communicates control signals and data signals with the controller 100 under the control of the controller 410. Such as: the received user input signal is transmitted to the controller 100. The communicator 430 may include at least one of a WIFI module 431, a bluetooth module 432, a Near Field Communication (NFC) module 433, and the like.

A user input/output interface 440, wherein the input interface includes at least one of a microphone 441, a touch pad 442, a sensor 443, keys 444, a camera 445, and the like. Such as: the user can input a user command through voice, touch, gesture, pressing, and the like, and the input interface converts the received analog signal into a digital signal and converts the digital signal into a corresponding command signal, and sends the command signal to the controller 100.

The output interface includes an interface that transmits the received user instruction to the controller 100. In some embodiments, it may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, a user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the controller 100 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then sent to the controller 100 through the rf sending terminal.

In some embodiments, the control device 400 includes at least one of a communicator 430 and an output interface. The control device 400 is configured with a communicator 430, such as: the modules such as WIFI, bluetooth, and NFC may send the user input command to the controller 100 through a WIFI protocol, a bluetooth protocol, or an NFC protocol code.

A memory 490 for storing various operation programs, data and applications for driving and controlling the control apparatus 400 under the control of the controller 410. The memory 490 may store various control signal commands input by a user.

And a power supply 480 for providing operation power support for each electrical component of the control device 400 under the control of the controller 410. The power supply 480 may be implemented using a battery and associated control circuitry.

Fig. 14 shows a schematic hardware structure diagram of a laser projection apparatus provided in an embodiment of the present application, and as shown in fig. 14, the laser projection apparatus includes: a Television (TV) board 810, a display panel 820, a light source 830, and a light source driving circuit 840.

Hereinafter, each device related to fig. 14 will be described in detail:

the TV board 810 is mainly used to receive and decode external audio and video signals. The TV board 810 is provided with a System on Chip (SoC) capable of decoding data of different data formats into a normalized format and transmitting the normalized format data to the display panel 820 through, for example, a connector (connector).

The display panel 820 may be provided with a Field Programmable Gate Array (FPGA) 821, a control processing module 822, and an optical modulation device 823.

FPGA821 is used for processing the input video image signal, such as performing Motion Estimation and Motion Compensation (MEMC) frequency multiplication processing, or implementing image enhancement function such as image correction.

And the control processing module 822 is connected with the algorithm processing module FPGA and used for receiving the processed video image processing signal data as image data to be projected. The control processing module 822 outputs a current PWM brightness adjustment signal and an enable control signal according to image data to be transmitted, and implements timing and lighting control of the light source 830 through the light source driving circuit 840.

The optical modulation device 823 may receive a video image signal output from the TV board 810 and analyze and know a divisional luminance signal and an image component of the video image. Alternatively, the optical modulation device 200 may receive the image signal to be projected output by the FPGA821, and the image signal to be projected may include an image brightness signal and an image component after absorption.

The light source 830 includes a red light source, a blue light source and a green light source, and the light sources of the three colors can emit light simultaneously or in a time sequence. The light source 830 is driven to light up according to the timing of image display indicated by the control instruction of the control processing module 822.

The exemplary embodiments of the present application provide a display terminal, which may be specifically a desktop computer, a portable computer, a smart phone, a tablet computer, a Personal Digital Assistant (PDA), and the like. The Display terminal may include a Central Processing Unit (CPU), a memory, an input/output device, etc., the input device may include a keyboard, a mouse, a touch screen, etc., and the output device may include a Display device, such as a Liquid Crystal Display (LCD), a Cathode Ray Tube (CRT), etc.

For different display terminals, in some exemplary embodiments, the user interfaces 620, 820 may be interfaces capable of interfacing externally to desired devices including, but not limited to, keypads, displays, speakers, microphones, joysticks, and the like.

The processor is responsible for managing the bus architecture and general processing, and the memory may store data used by the processor 600 in performing operations.

In some exemplary embodiments, the processor may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

The memory may include Read Only Memory (ROM) and Random Access Memory (RAM), and provides the processor with program instructions and data stored in the memory. In the embodiments of the present application, the memory may be used to store a program of any of the methods provided in the exemplary embodiments of the present application.

The processor is configured to execute any of the methods provided in the exemplary embodiments of the present application in accordance with the obtained program instructions by calling the program instructions stored in the memory.

The present application provides, in an exemplary embodiment, a computer storage medium for storing computer program instructions for an apparatus provided in the above-mentioned embodiment of the present application, which includes a program for executing any one of the methods provided in the above-mentioned embodiment of the present application.

The computer storage media may be any available media or data storage device that can be accessed by a computer, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND FLASH), Solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, the present application in exemplary embodiments may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments shown in the present application without inventive effort, shall fall within the scope of protection of the present application. Moreover, while the disclosure herein has been presented in terms of exemplary one or more examples, it is to be understood that each aspect of the disclosure can be utilized independently and separately from other aspects of the disclosure to provide a complete disclosure.

It should be understood that the terms "first," "second," "third," and the like in the description and in the claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used are interchangeable under appropriate circumstances and can be implemented in sequences other than those illustrated or otherwise described herein with respect to the embodiments of the application, for example.

Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A laser projection system, comprising: the system comprises a laser projection host, a laser projection screen, a second display and a main controller; the main controller is respectively connected with the laser projection host and the second display;

the master controller is configured to: responding to a received image correction instruction, and acquiring an image to be corrected and prompt information corresponding to the image to be corrected; controlling the laser projection host to project the image to be corrected to the laser projection screen; controlling the second display to display the prompt message;

the laser projection host is configured to: projecting the image to be corrected to the laser projection screen;

the laser projection screen is configured to: displaying the image to be corrected projected by the laser projection host;

the second display is configured to: and displaying the prompt information sent by the laser projection host.

2. The laser projection system of claim 1, wherein when the second display is disposed on the laser projection host, the laser projection system further comprises: an auxiliary controller; the main controller is connected with the auxiliary controller;

the master control appliance is configured to: sending a first display instruction to the auxiliary controller; the first display instruction is used for instructing the second display to display the prompt message;

the secondary controller is configured to: and receiving the first display instruction, and controlling the second display to display the prompt message.

3. The laser projection system of claim 1, wherein when the second display is a miniature projection system, the miniature projection system further comprises: a micro projection host; the main controller is connected with the miniature projection host;

the master control appliance is configured to: sending a projection instruction to the micro projection host; the projection instruction is used for instructing the micro projection host to project the prompt message to the second display;

the micro-projection host is configured to: and receiving the projection instruction and projecting the prompt message to the second display.

4. The laser projection system of claim 1, wherein the master controller is communicatively coupled to the terminal when the second display is a display of the terminal;

the master control appliance is configured to: sending a second display instruction to the terminal; the second display instruction is used for indicating the terminal to display the prompt message;

the terminal is configured to: and receiving the second display instruction and displaying the prompt message.

5. The laser projection system of claim 4, further comprising: a communicator; the main controller is in communication connection with the terminal through the communicator;

the communicator is configured to: receiving the second display instruction sent by the main controller; and sending the second display instruction to the terminal.

6. A laser projection system according to any of claims 1-5, wherein the laser projection system is an ultra-short-focus laser projection system.

7. The laser projection system of any of claims 1-5, wherein the master controller is further configured to:

and responding to an image correction operation executed by a user, and adjusting the image to be corrected so that the adjusted image to be corrected meets a preset condition.

8. The laser projection system of claim 7, further comprising: a sensor; the main controller is connected with the sensor;

the sensor is configured to: acquiring the image to be corrected displayed by the laser projection screen, and sending the image to be corrected to the main controller;

the master control appliance is configured to: and responding to the image correction operation performed by the user, and adjusting the image to be corrected according to the image to be corrected sent by the sensor.

9. An image correction method applied to the main controller of the laser projection system of any one of claims 1 to 8, comprising:

controlling a laser projection host to project the image to be corrected to a laser projection screen;

and controlling a second display to display the prompt message.

10. The image correction method according to claim 9, characterized by further comprising: