CN113824940A - Projection display device, method and system - Google Patents

Projection display device, method and system Download PDF

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Publication number
CN113824940A
CN113824940A CN202111159111.3A CN202111159111A CN113824940A CN 113824940 A CN113824940 A CN 113824940A CN 202111159111 A CN202111159111 A CN 202111159111A CN 113824940 A CN113824940 A CN 113824940A
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CN
China
Prior art keywords
image
module
sub
frame
display
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Pending
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CN202111159111.3A
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Chinese (zh)
Inventor
梁倩
郭大勃
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Qingdao Hisense Laser Display Co Ltd
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Qingdao Hisense Laser Display Co Ltd
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Publication date
Application filed by Qingdao Hisense Laser Display Co Ltd filed Critical Qingdao Hisense Laser Display Co Ltd
Priority to CN202111159111.3A priority Critical patent/CN113824940A/en
Publication of CN113824940A publication Critical patent/CN113824940A/en
Priority to CN202280060244.1A priority patent/CN117882368A/en
Priority to PCT/CN2022/102066 priority patent/WO2023050940A1/en
Pending legal-status Critical Current

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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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3161—Modulator illumination systems using laser light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/4104—Peripherals receiving signals from specially adapted client devices
    • H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
    • 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]
    • H04N9/3179—Video signal processing therefor

Abstract

The application provides a projection display device, a method and a system, wherein the device comprises: the display device comprises a display control module, a digital micro-mirror device and a plurality of galvanometers, wherein the display control module comprises a framing module and a processing module. The framing module can frame image data of an image to be displayed into sub-image data with multi-frame resolution consistent with the display resolution of the digital micro-mirror device, the processing module converts each frame of sub-image data into a corresponding control signal, and the processing module controls the digital micro-mirror device to output a display signal of each frame of sub-image, and then the display signal is output after multi-stage vibration processing through a plurality of vibrating mirrors. The equipment frames the image data of the image to be displayed into multi-frame sub-image data which can be supported by the digital micro-mirror device to be displayed, so that the display signal of each frame of sub-image can be output in a time-sharing mode through the digital micro-mirror device, and then the vibration in the corresponding direction is carried out by utilizing the vibrating mirrors, so that the display signal of each frame of sub-image can be presented at the corresponding position, and the display of the high-resolution image is realized.

Description

Projection display device, method and system
Technical Field
The present application relates to the field of electronic technologies, and in particular, to a projection display device, a method, and a system.
Background
With the development of display technology, laser projection is applied more and more widely in daily life. Laser projection refers to projecting and displaying an image transmitted by a laser light source on a screen by using a digital micromirror device in a projection display device.
Because the current digital micromirror device has a low display resolution and cannot display a high-resolution image (e.g., a 4K image), a galvanometer is usually disposed in the projection display device corresponding to the digital micromirror device, and the high-resolution image is displayed through vibration of the galvanometer.
However, as the demand of people for image quality is continuously increased, the resolution of images is higher and higher, and the existing projection display device cannot display high-resolution images (for example, 8K images), which affects user experience.
Disclosure of Invention
The application provides a projection display device, a method and a system, which are used for displaying a high-resolution image.
In a first aspect, an embodiment of the present application provides a projection display device, including: the display control module, the digital micromirror device and a plurality of galvanometers; the display control module comprises a framing module and a processing module; the plurality of galvanometers are arranged in sequence corresponding to the digital micromirror device; the number and the type of the set galvanometers are determined based on a framing mode preset in the framing module; the frame dividing mode preset in the frame dividing module is predetermined based on the resolution of an image to be displayed and the display resolution of the digital micromirror device;
the framing module is used for framing the received image data of the image to be displayed according to a preset framing mode to obtain multi-frame sub-image data; the resolution of the sub-image corresponding to each frame of sub-image data is consistent with the display resolution of the digital micro-mirror device;
the processing module is connected with the framing module and is used for converting each frame of sub-image data into corresponding control signals;
the digital micromirror device is connected with the processing module and is used for outputting display signals of each frame of sub-image according to a preset output time sequence according to control signals corresponding to each frame of sub-image data;
the plurality of galvanometers are used for respectively executing vibration in corresponding directions based on the output time sequence of the display signals of each frame of sub-images so that the display signals of each frame of sub-images are transmitted through the plurality of galvanometers to output the display signals of each frame of sub-images subjected to multistage vibration processing, and the display signals of each frame of sub-images subjected to multistage vibration processing are jointly used for projection display of the image to be displayed.
Further, the apparatus as described above, the projection display apparatus further comprising: a lens arranged corresponding to the digital micromirror device;
the lens is positioned between the digital micromirror device and the vibrating mirror which is closest to the digital micromirror device in the plurality of vibrating mirrors, and is used for transmitting the display signal of each frame of sub-image output by the digital micromirror device and then transmitting the display signal to the plurality of vibrating mirrors.
Further, the apparatus as described above, the projection display apparatus further comprising: a preprocessing module;
the preprocessing module is connected with the framing module and is used for preprocessing the image data of the image to be displayed and sending the preprocessed image data of the image to be displayed to the framing module, so that the framing module performs framing processing on the received preprocessed image data of the image to be displayed according to a preset framing mode.
Further, the apparatus as described above, the projection display apparatus further comprising: the device comprises a signal receiving module and a coding and decoding module;
the signal receiving module is used for receiving video data of a video to be displayed, which is sent by the signal source;
the coding and decoding module is connected with the signal receiving module and the preprocessing module and is used for coding and decoding the video data to obtain the image data of the image to be displayed.
In a second aspect, an embodiment of the present application provides a projection display system, which includes the projection display device according to the first aspect and a screen.
Further, in the system as described above, the screen is a liftable screen.
In a third aspect, an embodiment of the present application provides a projection display method, which is applied to a projection display device, where the projection display device includes: the display control module, the digital micromirror device and a plurality of galvanometers; the display control module comprises a framing module and a processing module connected with the framing module; the digital micromirror device is connected with the processing module; the plurality of galvanometers are arranged in sequence corresponding to the digital micromirror device; the number and the type of the set galvanometers are determined based on a framing mode preset in the framing module; the frame dividing mode preset in the frame dividing module is predetermined based on the resolution of an image to be displayed and the display resolution of the digital micromirror device;
the method comprises the following steps:
the framing module performs framing processing on the received image data of the image to be displayed according to a preset framing mode to obtain multi-frame sub-image data; the resolution of the sub-image corresponding to each frame of sub-image data is consistent with the display resolution of the digital micro-mirror device; the processing module converts each frame of sub-image data into a corresponding control signal; the digital micromirror device outputs a display signal of each frame of sub-image according to a control signal corresponding to each frame of sub-image data and a preset output time sequence; the plurality of galvanometers respectively execute vibration in corresponding directions based on the output time sequence of the display signals of each frame of sub-images, so that the display signals of each frame of sub-images are transmitted through the plurality of galvanometers to output the display signals of each frame of sub-images subjected to multistage vibration processing, and the display signals of each frame of sub-images subjected to multistage vibration processing are jointly used for projection display of the image to be displayed.
Further, the method as described above, the projection display device further comprising: a lens arranged corresponding to the digital micromirror device; the lens is positioned between the digital micromirror device and the galvanometer closest to the digital micromirror device in the plurality of galvanometers;
the method further comprises the following steps:
and the lens transmits the display signal of each frame of sub-image output by the digital micromirror device and transmits the display signal to the plurality of vibrating mirrors.
Further, the method as described above, the projection display device further comprising: the preprocessing module is connected with the framing module;
the method further comprises the following steps:
the preprocessing module is used for preprocessing the image data of the image to be displayed and sending the preprocessed image data of the image to be displayed to the framing module, so that the framing module is used for framing the received preprocessed image data of the image to be displayed according to a preset framing mode.
Further, the method as described above, the projection display device further comprising: the signal receiving module and the coding and decoding module are connected with the signal receiving module and the preprocessing module;
the method further comprises the following steps:
the signal receiving module receives video data of a video to be displayed, which is sent by a signal source; and the coding and decoding module is used for coding and decoding the video data to obtain the image data of the image to be displayed.
The application provides a projection display device, a projection display method and a projection display system. The frame dividing module can perform frame dividing processing on image data of an image to be displayed according to a preset frame dividing mode to obtain sub-image data with multi-frame resolution consistent with the display resolution of the digital micromirror device, the processing module converts each frame of sub-image data into a corresponding control signal to enable the digital micromirror device to output a display signal of each frame of sub-image based on the control signal, and then the plurality of vibrating mirrors can respectively execute vibration in corresponding directions based on the output time sequence of the display signal of each frame of sub-image to output the display signal of each frame of sub-image subjected to multi-stage vibration processing. That is to say, the present application frames the image data of the image to be displayed into the multi-frame sub-image data that the digital micromirror device can support to display, so that the display signal of each frame of sub-image can be output in a time-sharing manner through the digital micromirror device, and then the plurality of vibrating mirrors are utilized to respectively vibrate in corresponding directions, so that the display signal of each frame of sub-image can be presented at a corresponding position, thereby realizing the display of the high resolution image.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Fig. 1 is a schematic diagram schematically illustrating an operation scenario between a laser television and a control apparatus according to an exemplary embodiment;
fig. 2 is a block diagram schematically showing a configuration of the control apparatus 100 according to an exemplary embodiment;
fig. 3 is a schematic diagram schematically illustrating a hardware configuration of the laser television 200 according to an exemplary embodiment;
fig. 4 is a schematic structural diagram of a projection display device according to an embodiment of the present disclosure;
fig. 5 is a schematic flowchart of a framing method according to an embodiment of the present application;
fig. 6 is a schematic diagram of a framing manner according to an embodiment of the present application;
fig. 7 is a schematic flowchart of another frame division manner provided in the embodiment of the present application;
fig. 8 is a schematic diagram of another frame division manner provided in the embodiment of the present application;
fig. 9 is a schematic flowchart of another framing method according to an embodiment of the present application;
fig. 10 is a schematic diagram of another framing manner according to an embodiment of the present application;
FIG. 11 is a schematic optical path diagram of a display signal of each frame of sub-image according to an embodiment of the present disclosure;
fig. 12 is a schematic structural diagram of another projection display device provided in an embodiment of the present application;
fig. 13 is a schematic structural diagram of another projection display device provided in an embodiment of the present application;
FIG. 14 is a schematic diagram of a projection display system according to an embodiment of the present application;
fig. 15 is a flowchart of a projection display method according to an embodiment of the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with aspects of the present application.
With the development of display technology, laser projection is widely applied in the fields of commerce, teaching and the like. Laser projection uses a projection display device, such as a laser television, to implement a projection display on a screen. The most important working module in the projection display Device is a Digital Micromirror Device (DMD), on which 80 to 100 thousands of lenses are tightly arranged, each lens can be independently turned to the positive and negative directions, and the light source is reflected to the screen through the lenses to directly form an image, wherein one lens represents one pixel, that is, the light reflected by one lens is a pixel point of the finally formed image. The number of the lenses in different digital micromirror devices is different, that is, the display resolution is different, wherein the common digital micromirror device has 47DMD and 66DMD, wherein the display resolution of 47DMD is 1920 × 1080, and the display resolution of 66DMD is 2715 × 1527, that is, 47DMD can support an image (for example, a 1K image) with a display resolution of 1920 × 1080 or less, and 66DMD can support an image (for example, a 2K image) with a display resolution of 2715 × 1527 or less.
Since the display resolution of the conventional digital micromirror device is low and the conventional digital micromirror device cannot display an image with a higher resolution (e.g. a 4K image), a galvanometer is usually arranged in the projection display device corresponding to the digital micromirror device, and the image with the higher resolution is displayed by the vibration of the galvanometer. However, as the demand of people for image quality is continuously increased, the resolution of images is higher and higher, and the existing projection display device cannot display high-resolution images (for example, 8K images), which affects user experience.
The application provides a projection display device, a method and a system, which aim to solve the technical problems in the prior art.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
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 display device as disclosed herein) that is capable of wirelessly controlling the electronic device, typically over a relatively short distance. The component may typically be connected to the electronic device using infrared and/or Radio Frequency (RF) signals and/or bluetooth, and may also include functional modules such as WiFi, wireless USB, bluetooth, motion sensors, etc. For example: the hand-held touch remote controller replaces most of the physical built-in hardware in the common remote control device with the user interface in the touch screen.
Fig. 1 is a schematic diagram illustrating an operation scenario between a laser television and a control device according to an exemplary embodiment. As shown in fig. 1, a user can operate the laser television 200 through the control device 100.
The control device 100 may be a remote controller 100A, which can communicate with the laser television 200 through an infrared protocol communication, a bluetooth protocol communication, a ZigBee (ZigBee) protocol communication, or other short-distance communication, and is used to control the laser television 200 through a wireless or other wired manner. The user can input a user instruction through a key on the remote control 100A, voice input, control panel input, or the like to control the laser television 200. Such as: the user can input a corresponding control command through a screen up/down key, a volume up/down key, a channel control key, up/down/left/right movement keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller 100A, thereby implementing a function of controlling the laser television 200.
The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like, which may communicate with the laser television 200 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 laser television 200 through an application program corresponding to the laser television 200. For example, laser television 200 is controlled using an application running on a 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 100B and the laser television 200 may each have a software application installed thereon, so that the 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 100B and the laser television 200, a remote control keyboard is synchronized to the mobile terminal 100B, and the function of controlling the laser television 200 is realized by controlling a user interface on the mobile terminal 100B; the audio and video content displayed on the mobile terminal 100B may also be transmitted to the laser television 200, so as to implement a synchronous display function.
As shown in fig. 1, the laser television 200 may also communicate data with the server 300 through a variety of communication methods. In various embodiments of the present application, laser television 200 may be enabled to be in wired or wireless communication with server 300 via a local area network, wireless local area network, or other network. Server 300 may provide various content and interactions to laser television 200.
Illustratively, laser television 200 receives software Program updates, or accesses a remotely stored digital media library by sending and receiving information, and Electronic Program Guide (EPG) interactions. The servers 300 may be a group or groups, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service are provided through the server 300.
The laser television 200 includes a screen 201 and a projection device 202 (i.e., a projection display device). The projection device 202 obtains the content to be displayed, and projects the content to be displayed to the screen 201 in an optical projection imaging manner, so that the screen 201 displays the content to be displayed. The particular laser television type, size, resolution, etc. are not limiting, and those skilled in the art will appreciate that the laser television 200 may be modified in performance and configuration as desired.
The laser television 200 may additionally provide an intelligent network television function that provides a computer support function in addition to the broadcast receiving television function. Examples include a web tv, a smart tv, an Internet Protocol Tv (IPTV), and the like. In some embodiments, laser television may not have broadcast receiving television functionality.
In other examples, more or less functionality may be added. The functions of the laser television are not particularly limited in the present application.
Fig. 2 is a block diagram schematically showing the configuration of the control apparatus 100 according to the exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communicator 130, a user input/output interface 140, a memory 190, and a power supply 180.
The control device 100 is configured to control the laser television 200, receive an input operation instruction from a user, convert the operation instruction into an instruction recognizable and responsive by the laser television 200, and play a role in mediating interaction between the user and the laser television 200. Such as: the user responds to the channel up/down operation by operating the channel up/down key on the control device 100. The following steps are repeated: the user responds to the control of the screen ascending or descending by operating the screen ascending or descending key on the control device 100 by the laser television 200. In the present application, the term "up" or "down" refers to the mounting position of the screen, and it is understood that the direction in which the screen is mounted differs depending on the mounting position of the screen. For example, for a screen mounted on a ceiling, the "up" and "down" directions thereof refer to the change of the screen in the height direction, and for a screen mounted on a vertical side wall, the directions of the "up" and "down" herein are the changes in the horizontal direction.
In some embodiments, the control device 100 may be a smart device. Such as: the control device 100 may install various applications for controlling the laser television 200 according to user requirements.
In some embodiments, as shown in fig. 1, mobile terminal 100 or other intelligent electronic device may function similarly to control apparatus 100 after installation of an application that manipulates laser television 200. Such as: the user may implement the functions of controlling the physical keys of the apparatus 100 by installing applications, various function keys or virtual buttons of a graphical user interface available on the mobile terminal 100B or other intelligent electronic devices.
The controller 110 includes a processor 112, a RAM 113 and a ROM 114, a communication interface, and a communication bus. The controller 110 is used to control the operation of the control device 100, as well as the internal components for communication and coordination and external and internal data processing functions.
The communicator 130 communicates control signals and data signals with the laser television 200 under the control of the controller 110. Such as: the received user input signal is transmitted to the laser television 200. The communicator 130 may include at least one of a WIFI module 131, a bluetooth module 132, an NFC module 133, and the like.
A user input/output interface 140, wherein the input interface includes at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, a camera 145, and the like. Such as: the user can realize a user instruction input function through actions such as 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 instruction signal, and sends the instruction signal to the laser television 200.
The output interface includes an interface that transmits the received user instruction to the laser television 200. In some embodiments, it may be an infrared interface or a radio frequency interface. Such as: when the infrared signal interface is used, the 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 laser television 200 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 modulated according to the rf control signal modulation protocol, and then transmitted to the laser television 200 through the rf transmitting terminal.
In some embodiments, the control device 100 includes at least one of a communicator 130 and an output interface. The communicator 130 is configured in the control device 100, such as: the modules such as the WIFI, the bluetooth and the NFC can transmit the user input command to the laser television 200 through a WIFI protocol, a bluetooth protocol or an NFC protocol code.
And a memory 190 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 190 may store various control signal commands input by a user.
And a power supply 180 for providing operation power support for each electrical component of the control device 100 under the control of the controller 110. The power supply 180 may be powered by a battery and associated control circuitry.
Fig. 3 schematically shows a hardware configuration of the laser television 200 according to an exemplary embodiment. For convenience of illustration, the laser television 200 in fig. 3 is illustrated by an example in which the laser projection device and the liftable screen are separately disposed.
As shown in fig. 3, the laser television 200 includes: a laser projection device 1 and a liftable screen 2. The laser projection device 1 is used for acquiring a video to be played, and specifically, the laser projection device can analyze a video signal to be played into an image signal and project the image signal onto a liftable screen to form an image. The liftable screen 2 is used to present a picture to a user.
In this application, except the mode that laser projection equipment and liftable screen separation set up, in order to reduce occupation space, in another kind of setting mode, make laser projection equipment 1 and liftable screen 2 as an organic whole. As an example, the laser television 200 integrates a laser projection device and a liftable screen in a television cabinet.
Example one
Fig. 4 is a schematic structural diagram of a projection display device according to an embodiment of the present disclosure, and as shown in fig. 4, the projection display device according to the embodiment includes a display control module 11, a digital micromirror device 12, and a plurality of galvanometers 13. The display control module 11 includes a framing module 21 and a processing module 22. The plurality of galvanometers 13 are sequentially arranged corresponding to the digital micromirror device 12, wherein the number of the galvanometers 13 and the type of the galvanometers are determined based on a framing mode preset in the framing module 21, and the framing mode preset in the framing module 21 is predetermined based on the resolution of an image to be displayed and the display resolution of the digital micromirror device 12.
In this embodiment, since the display resolution of the existing digital micromirror device 12 is low, in order to realize the display of the high resolution image, the high resolution image may be framed into a plurality of sub-images of low resolution that the digital micromirror device 12 can support to display, and a plurality of galvanometers 13 are provided in cooperation, and the plurality of galvanometers 13 vibrate in corresponding directions respectively, so that the display signals of the sub-images of each frame are respectively displayed at corresponding positions, thereby realizing the display of the high resolution image.
Specifically, the framing module 21 may perform framing processing on the received image data of the image to be displayed according to a preset framing manner, so as to obtain multiple frames of sub-image data. The frame dividing mode preset in the frame dividing module 21 is predetermined based on the resolution of the image to be displayed and the display resolution of the digital micromirror device 12, so that the resolution of the sub-image corresponding to each frame of sub-image data obtained by frame dividing can be consistent with the display resolution of the digital micromirror device 12.
The specific framing mode is as follows: if the resolution of the image to be displayed is P X Q, the display resolution of the digital micromirror device 12 is X Y, the frame dividing module 21 may first divide the image data of the image to be displayed into k frames of image data of the image with the resolution of M × N, then divide each frame of image data of the image with the resolution of M × N, into f frames of image data of the image with the resolution of a × B, so as to obtain k frames of image data with resolution of A frames of B images, dividing each frame of image data with resolution of A frames of B images into g frames of image data with resolution of C frames of D images, and obtaining the image data of the k, f, g frames with the resolution of C, D images, and the like until finally obtaining the image data of the k, f, g frames with the resolution of X, Y images, namely the final sub-image data. The image data satisfies k f g (), X Y, P Q throughout the framing process.
In an example, fig. 5 is a schematic flow chart of a frame division manner provided in this embodiment of the application, as shown in fig. 5, when the resolution of the image to be displayed is 8 × 1920 × 1080 and the display resolution of the digital micromirror device 12 is 1920 × 1080, the framing module 21 may first divide the image data of the image to be displayed into image data of two frames of images with the resolution of 4 × 1920 × 1080, then divide the image data of two frames of images with the resolution of 4 × 1920 × 1080 into image data of two frames of images with the resolution of 2 × 1920 × 1080, so as to obtain image data of four frames of images with the resolution of 2 × 1920 × 1080, and finally divide the image data of four frames of images with the resolution of 2 × 1920 × 1080 into image data of two frames of images with the resolution of 1920 × 1080, so as to obtain image data of eight frames of images with the resolution of 1920 × 1080, i.e. the final sub-image data.
In practical application, fig. 6 is a schematic diagram of a framing manner provided by the embodiment of the present application, and it should be noted that fig. 6 substitutes an image for image data to schematically illustrate how to perform framing processing on image data of an image to be displayed. As shown in fig. 6, two diagonally adjacent pixels in the image data of the image to be displayed with the resolution of 8 × 1920 × 1080 may be divided into a1Pixel and A2Pixels, whereby all A's can be obtained1First image data of first image composed of pixels and a composed of all A2Second image data of a second image of the pixels, and the resolution of each of the first image and the second image is 4 x 1920 x 1080.
Next, the first image may be renderedTwo obliquely adjacent pixels in the data are respectively divided into A11Pixel and A12Pixels, whereby all A's can be obtained11Third image data of third image composed of pixels and a composed of all A12Fourth image data of a fourth image of pixels, and the third image and the fourth image each have a resolution of 2 x 1920 x 1080. Correspondingly, two obliquely adjacent pixels in the second image data are respectively divided into A21Pixel and A22Pixels, whereby all A's can be obtained21Fifth image data of fifth image composed of pixels and a composed of all A22Sixth image data of a sixth image composed of pixels, and the resolutions of the fifth image and the sixth image are each 2 × 1920 × 1080.
Finally, two obliquely adjacent pixels in the third image data may be respectively divided into a111Pixel and A112Pixels, whereby all A's can be obtained111Seventh image data of seventh image composed of pixels and a composed of all A112Eighth image data of an eighth image composed of pixels, and resolutions of the seventh image and the eighth image are each 1920 × 1080. Dividing two obliquely adjacent pixels in the fourth image data into A121Pixel and A122Pixels, whereby all A's can be obtained121Ninth image data of ninth image composed of pixels and a122Tenth image data of a tenth image composed of pixels, and resolutions of the ninth image and the tenth image are each 1920 × 1080. Correspondingly, two obliquely adjacent pixels in the fifth image data are respectively divided into A211Pixel and A212Pixels, whereby all A's can be obtained211Eleventh image data of eleventh image composed of pixels and a212Twelfth image data of a twelfth image composed of pixels, and resolutions of the eleventh image and the twelfth image are each 1920 × 1080. Dividing two obliquely adjacent pixels in sixth image data into A221Pixel and A222Pixels, whereby all A's can be obtained221Thirteenth image data of thirteenth image composed of pixels and image composed of all A222Fourteenth Picture of Pixel constructionFourteenth image data of the image, and the resolutions of the thirteenth image and the fourteenth image are both 1920 × 1080. The image data of the seventh to fourteenth images with the resolution of 1920 × 1080 are image data of 8 frame sub-images finally obtained by framing.
In another example, fig. 7 is a schematic flow chart of another frame dividing method provided in this embodiment of the application, as shown in fig. 7, the resolution of the image to be displayed is 8 × 1920 × 1080, and the display resolution of the digital micromirror device 12 is 1920 × 1080, then the frame dividing module 21 may first divide the image data of the image to be displayed into image data of two frames of images with the resolution of 4 × 1920 × 1080, and then divide the image data of two frames of images with the resolution of 4 × 1920 × 1080 into image data of four frames of images with the resolution of 1920 × 1080, respectively, so as to obtain image data of eight frames of images with the resolution of 1920 × 1080, that is, final sub-image data.
In practical application, fig. 8 is a schematic diagram of another frame dividing manner provided by the embodiment of the present application, and it should be noted that fig. 8 substitutes an image for image data, and schematically illustrates how to perform frame dividing processing on image data of an image to be displayed. As shown in fig. 8, two diagonally adjacent pixels in the image data of the image to be displayed with the resolution of 8 × 1920 × 1080 may be divided into a1Pixel and A2Pixels, whereby all A's can be obtained1First image data of first image composed of pixels and a composed of all A2Second image data of a second image of the pixels, and the resolution of each of the first image and the second image is 4 x 1920 x 1080.
Next, two pixels adjacent to each other in the first image data can be divided into a11Pixel, A12Pixel, A13Pixel and A14Pixels, whereby all A's can be obtained11The third image data of the third image composed of pixels is composed of all A12Fourth image data of a fourth image composed of pixels, wherein A is the total13Fifth image data of a fifth image composed of pixels and a14Sixth image of pixel compositionImage data, and the third image, the fourth image, the fifth image, and the sixth image all have a resolution of 1920 x 1080. Correspondingly, two pixels adjacent to each other in the second image data in the upper, lower, left and right directions are respectively divided into A21Pixel, A22Pixel, A23Pixel and A24Pixels, whereby all A's can be obtained21Seventh image data of a seventh image composed of pixels, wherein A is the total22Eighth image data of an eighth image composed of pixels consisting of all A23Ninth image data of ninth image composed of pixels and ninth image data composed of all A24Tenth image data of a tenth image composed of pixels, and resolutions of the seventh image, the eighth image, the ninth image, and the tenth image are all 1920 × 1080. The image data of the third image to the tenth image with the resolution of 1920 × 1080 are image data of 8 frame sub-images finally obtained through framing processing.
In another example, fig. 9 is a schematic flow chart of another frame dividing method provided in this embodiment of the present application, as shown in fig. 9, the resolution of the image to be displayed is 8 × 1920 × 1080, and the display resolution of the digital micromirror device 12 is 2715 × 1527, then the frame dividing module 21 may first divide the image data of the image to be displayed into image data of two frames of images with the resolution of 4 × 1920 × 1080, and then divide the image data of two frames of images with the resolution of 4 × 1920 × 1080 into image data of two frames of images with the resolution of 2715 × 1527, respectively, so as to obtain image data of four frames of images with the resolution of 2715 × 1527, that is, final sub-image data.
In practical application, fig. 10 is a schematic diagram of another framing manner provided in the embodiment of the present application, and it should be noted that fig. 10 substitutes an image for image data, and schematically illustrates how to perform framing processing on image data of an image to be displayed. As shown in fig. 10, two diagonally adjacent pixels in the image data of the image to be displayed with the resolution of 8 × 1920 × 1080 may be divided into a1Pixel and A2Pixels, whereby all A's can be obtained1First image data of first image composed of pixels and a composed of all A2Second number of second images of pixelsAccordingly, the resolution of the first image and the second image is 4 × 1920 × 1080.
Next, two pixels diagonally adjacent in the first image data may be respectively divided into a11Pixel and A12Pixels, whereby all A's can be obtained11Third image data of third image composed of pixels and a composed of all A12Fourth image data of a fourth image composed of pixels, and the third image and the fourth image each have a resolution of 2715 × 1527. Correspondingly, two obliquely adjacent pixels in the second image data are respectively divided into A21Pixel and A22Pixels, whereby all A's can be obtained21Fifth image data of fifth image composed of pixels and a composed of all A22Sixth image data of a sixth image composed of pixels, and the resolutions of the fifth image and the sixth image are each 2715 × 1527. The image data of the third image to the sixth image with the resolution of 2715 × 1527 is the image data of 4 frame sub-images finally obtained by the framing processing.
Next, in order to output the display signal of each frame of the sub-image, the mirror of the digital micro-mirror device 12 needs to be controlled to be turned, and therefore, the image data of each frame of the sub-image needs to be converted into the control signal. Specifically, the processing module 22 is connected to the framing module 21, and is capable of converting each frame of sub-image data into a corresponding control signal, and sending the control signal to the digital micromirror device 12 connected thereto, and the digital micromirror device 12 is capable of controlling the mirror to turn over according to the control signal corresponding to each frame of sub-image data output by the processing module 22, so as to output the display signal of each frame of sub-image according to a predetermined output timing sequence. The display signal of each frame of the sub-image may be a light signal including all pixels of each frame of the sub-image.
Finally, in order to realize projection display of an image to be displayed, a plurality of galvanometers 13 may be provided in sequence corresponding to the digital micromirror device 12. The number of the vibrating mirrors 13 and the type of the vibrating mirrors are determined based on a framing mode preset in the framing module 21. Specifically, the plurality of mirrors 13 may respectively perform the vibration in the corresponding direction based on the output timing of the display signal of the sub-image of each frame, so that the display signal of the sub-image of each frame is transmitted through the plurality of mirrors 13 to output the display signal of the sub-image of each frame subjected to the multi-stage vibration process. The display signals of the sub-images of each frame after the multi-stage vibration processing can be used together for projection display of the image to be displayed.
It should be noted that although the display signals of the sub-images of each frame are output according to the predetermined output timing sequence, the projection display is also performed according to the predetermined timing sequence, because the whole output process is continuous and fast, and because the human eye has persistence of vision, the image finally visually presented is an image including all the pixels of all the sub-images, i.e., the image to be displayed.
In one example, the resolution of the image to be displayed is 8 × 1920 × 1080, the display resolution of the digital micromirror device 12 is 1920 × 1080, the framing manner preset in the framing module 21 is the framing manner shown in fig. 6, and accordingly, three two-dimensional galvanometers may be sequentially arranged corresponding to the digital micromirror device 12. Specifically, the two-dimensional galvanometer closest to the digital micromirror device 12 is a first galvanometer, the two-dimensional galvanometer adjacent to the first galvanometer is a second galvanometer, and the two-dimensional galvanometer adjacent to the second galvanometer is a third galvanometer.
In practical application, after the framing module 21 performs framing processing on the image to be displayed according to the framing mode shown in fig. 6, the digital micromirror device 12 can output the obtained display signals of 8 frames of sub-images respectively according to a predetermined output timing sequence, and the three two-dimensional galvanometers respectively execute vibration in corresponding directions based on the output timing sequence of the display signals of each frame of sub-images, so as to transmit and output the display signals of each frame of sub-images subjected to the three-level vibration processing.
Specifically, the digital micromirror device 12 can output all A at the first time111The display signals of the sub-images formed by the pixels are correspondingly that the first galvanometer, the second galvanometer and the third galvanometer can vibrate obliquely upwards; the second time can output the total A112A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer and the second galvanometer may be kept to vibrate obliquely upward, and the third galvanometer may be rotated to vibrate obliquely downward; the third time can output the total A121Formed by pixelsA display signal of the sub image, accordingly, the first galvanometer may be kept to vibrate obliquely upward, the second galvanometer may be turned to vibrate obliquely downward, and the third galvanometer may be turned to vibrate obliquely upward; the fourth time can output the total A122A display signal of a sub image constituted by pixels, accordingly, the first galvanometer may be kept to vibrate obliquely upward, the second galvanometer may be kept to vibrate obliquely downward, and the third galvanometer may be turned obliquely downward again; the fifth time can output the total A211The display signal of the sub-image formed by the pixels, accordingly, the first galvanometer can be rotated to vibrate obliquely downwards, and the second galvanometer and the third galvanometer can be rotated to vibrate obliquely upwards again; the sixth time can be output by all A212A display signal of a sub image constituted by pixels, accordingly, the first galvanometer may be kept vibrating obliquely downward, the second galvanometer may be kept vibrating obliquely upward, and the third galvanometer may be turned obliquely downward again; the seventh time can output the total A221A display signal of a sub image constituted by pixels, accordingly, the first galvanometer may be kept to vibrate obliquely downward, the second galvanometer may be rotated to vibrate obliquely downward, and the third galvanometer may be rotated back to vibrate obliquely upward; the eighth time can output the total A222The display signal of the sub-image constituted by the pixels, accordingly, the first galvanometer and the second galvanometer may be kept to vibrate obliquely downward, and the third galvanometer may be rotated again to vibrate obliquely downward, whereby all of A may be made to vibrate respectively111Pixel, all A112Pixel, all A121Pixel, all A122Pixel, all A211Pixel, all A212Pixel, all A221Pixel and all A222Display signals of sub-images formed by the pixels are sequentially presented at corresponding positions and are jointly used for projecting and displaying an image to be displayed.
In yet another example, the resolution of the image to be displayed is 8 × 1920 × 1080, the display resolution of the digital micro-mirror device 12 is 1920 × 1080, the framing mode preset in the framing module 21 is the framing mode shown in fig. 8, and accordingly, a two-dimensional galvanometer and a four-dimensional galvanometer may be sequentially arranged corresponding to the digital micro-mirror device 12. Specifically, the two-dimensional galvanometer closest to the digital micromirror device 12 is a first galvanometer, and the four-dimensional galvanometer adjacent to the first galvanometer is a second galvanometer.
In practical application, after the framing module 21 performs framing processing on the image to be displayed according to the framing mode shown in fig. 8, the digital micromirror device 12 may output the obtained display signals of 8 frames of sub-images respectively according to a predetermined output timing sequence, and the first galvanometer and the second galvanometer may respectively execute vibration in corresponding directions based on the output timing sequence of the display signals of each frame of sub-images, so as to output the display signals of each frame of sub-images subjected to the secondary vibration processing in a transmission manner.
Specifically, the digital micromirror device 12 can output all A at the first time11The display signal of the sub-image constituted by the pixels, accordingly, the first galvanometer may vibrate obliquely upward, and the second galvanometer may vibrate upward; the second time can output the total A12A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be kept vibrating obliquely upward and the second galvanometer may be vibrated rightward; the third time can output the total A13A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be kept vibrating obliquely upward and the second galvanometer may be vibrated downward; the fourth time can output the total A14A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be kept vibrating obliquely upward and the second galvanometer may be vibrated leftward; the fifth time can output the total A21The display signal of the sub-image formed by the pixels, accordingly, the first galvanometer can be rotated to vibrate obliquely downwards, and the second galvanometer can be rotated to vibrate upwards again; the sixth time can be output by all A22A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be kept to vibrate obliquely downward, and the second galvanometer may vibrate rightward; the seventh time can output the total A23A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be kept vibrating obliquely downward, and the second galvanometer may be vibrated downward; the eighth time can output the total A24The display signal of the sub-image formed by the pixels, accordingly, the first galvanometer may be kept vibrating obliquely downward, and the second galvanometer may be leftVibrating so as to make all A respectively11Pixel, all A12Pixel, all A13Pixel, all A14Pixel, all A21Pixel, all A22Pixel, all A23Pixel and all A24Display signals of sub-images formed by the pixels are sequentially presented at corresponding positions and are jointly used for projecting and displaying an image to be displayed.
In another example, the resolution of the image to be displayed is 8 × 1920 × 1080, the display resolution of the digital micro-mirror device 12 is 2715 × 1527, the frame division mode preset in the frame division module 21 is the frame division mode as shown in fig. 10, and accordingly, two-dimensional galvanometers may be sequentially arranged corresponding to the digital micro-mirror device 12. Specifically, the two-dimensional galvanometer closest to the digital micromirror device 12 is a first galvanometer, and the two-dimensional galvanometer adjacent to the first galvanometer is a second galvanometer.
In practical application, after the framing module 21 performs framing processing on the image to be displayed according to the framing mode shown in fig. 10, the digital micromirror device 12 can output the obtained display signals of 4 frames of sub-images respectively according to a predetermined output timing sequence, and the two-dimensional galvanometers respectively execute vibration in corresponding directions based on the output timing sequence of the display signals of each frame of sub-images, so as to transmit and output the display signals of each frame of sub-images subjected to the secondary vibration processing.
Specifically, the digital micromirror device 12 can output all A at the first time11Correspondingly, the first vibrating mirror and the second vibrating mirror can vibrate obliquely upwards; the second time can output the total A12A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be kept to vibrate obliquely upward and the second galvanometer may be rotated to vibrate obliquely downward; the third time can output the total A21A display signal of a sub image constituted by pixels, and accordingly, the first galvanometer may be rotated to vibrate obliquely downward and the second galvanometer may be rotated to vibrate obliquely upward; the fourth time can output the total A22The display signal of the sub-picture constituted by the pixels, accordingly, the first galvanometer may be kept vibrating obliquely downward, and the second galvanometer may be turned again to vibrate obliquely downwardMove so as to make all A separately11Pixel, all A12Pixel, all A21Pixel, all A22Display signals of sub-images formed by the pixels are sequentially presented at corresponding positions and are jointly used for projecting and displaying an image to be displayed.
The projection display device provided by the embodiment comprises a display control module, a digital micromirror device and a plurality of galvanometers, wherein the display control module comprises a framing module and a processing module. The frame dividing module can perform frame dividing processing on image data of an image to be displayed according to a preset frame dividing mode to obtain sub-image data with multi-frame resolution consistent with the display resolution of the digital micromirror device, the processing module converts each frame of sub-image data into a corresponding control signal to enable the digital micromirror device to output a display signal of each frame of sub-image based on the control signal, and then the plurality of vibrating mirrors can respectively execute vibration in corresponding directions based on the output time sequence of the display signal of each frame of sub-image to output the display signal of each frame of sub-image subjected to multi-stage vibration processing. That is to say, in the embodiment of the present application, the image data of the image to be displayed is framed into the multi-frame sub-image data that can be supported by the digital micro-mirror device for display, so that the display signal of each frame of sub-image can be output in a time-sharing manner through the digital micro-mirror device, and then the plurality of vibrating mirrors are utilized to respectively vibrate in corresponding directions, so that the display signal of each frame of sub-image can be presented at a corresponding position, thereby realizing the display of the high-resolution image.
Example two
On the basis of the first embodiment, the projection display device further includes: a lens 14 disposed corresponding to the digital micromirror device 12. Fig. 11 is a schematic diagram of an optical path of a display signal of each frame of sub-image according to an embodiment of the present application, and as shown in fig. 11, a lens 14 is located between a digital micromirror device 12 and a galvanometer 13 of a plurality of galvanometers 13 that is closest to the digital micromirror device 12. In practical applications, the lens 14 may be used to transmit the display signal of each frame of sub-image output by the dmd 12 to the plurality of mirrors 13.
In one example, the lens 14 may be a Total Internal Reflection (TIR) lens, and the TIR lens may collect light by using a Total Reflection principle, so that the display signal of each frame of sub-image may be better transmitted to the plurality of mirrors 13, and transmission loss is effectively avoided.
Fig. 12 is a schematic structural diagram of another projection display device according to an embodiment of the present application, and as shown in fig. 12, on the basis of the first embodiment, the projection display device according to the present embodiment further includes a preprocessing module 15 connected to the framing module 21.
In practical application, the preprocessing module 15 may preprocess the image data of the image to be displayed, and send the preprocessed image data of the image to be displayed to the framing module 21, so that the framing module 21 performs framing processing on the received preprocessed image data of the image to be displayed according to a preset framing manner.
In one example, the preprocessing module 15 may include a Field Programmable Gate Array (FPGA). Because the hardware structure of the FPGA is special, the internal structure can be adjusted by using a logic structure file edited in advance, the connection and the position of different logic units can be adjusted by using a constrained file, the data line path is properly processed, and the FPGA has good flexibility and adaptability and is convenient to develop and apply. Especially, when processing image data, the FPGA can effectively ensure the processing speed of the data.
Fig. 13 is a schematic structural diagram of another projection display device provided in this embodiment, and as shown in fig. 13, on the basis of the first embodiment, the projection display device provided in this embodiment further includes a signal receiving module 16 and a coding and decoding module 17 connected to the signal receiving module 16 and the preprocessing module 15.
In a possible application scenario, the content to be projected and displayed is a video, and based on the basic principle of projection display, video data of the video to be displayed needs to be converted into image data of an image to be displayed of one frame.
Specifically, the signal receiving module 16 may receive video data of a video to be displayed sent by the signal source, and send the video data to the codec module 17 connected to the signal receiving module 16, where the codec module 16 may perform encoding and decoding processing on the video data to obtain image data of an image to be displayed, where the image data of the image to be displayed may be a differential signal, and send the image data of the image to be displayed to the preprocessing module 15 connected to the signal receiving module to prepare for the preprocessing module 15 to perform preprocessing on the image data of the image to be displayed.
In one example, the codec module 16 may be a System On Chip (SOC). The SOC is an integrated controller, the size is small, the processing speed is high, and therefore encoding and decoding processing of video data can be achieved rapidly.
EXAMPLE III
Fig. 14 is a projection display system according to an embodiment of the present application, and as shown in fig. 14, the projection display system according to the embodiment of the present application includes a projection display device according to any other embodiment of the present application and a screen 18. In practical application, the framing module 21 may perform framing processing on the received image data of the image to be displayed according to a preset framing manner, so as to obtain multiple frames of sub-image data. The framing mode preset in the framing module 21 is predetermined based on the resolution of the image to be displayed and the display resolution of the digital micromirror device 12, so that the resolution of the sub-image corresponding to each frame of sub-image data obtained through framing processing can be consistent with the display resolution of the digital micromirror device 12.
Next, the processing module 22 is connected to the framing module 21, and can convert each frame of sub-image data into a corresponding control signal, and send the control signal to the digital micromirror device 12 connected thereto, and the digital micromirror device 12 can control the mirror to turn over according to the control signal corresponding to each frame of sub-image data output by the processing module 22, so as to output the display signal of each frame of sub-image according to a predetermined output timing sequence.
Finally, a plurality of galvanometers 13 are sequentially arranged corresponding to the digital micromirror device 12. The number of the vibrating mirrors 13 and the type of the vibrating mirrors are determined based on a framing mode preset in the framing module 21. The plurality of galvanometers 13 may respectively perform vibration in corresponding directions based on an output timing of the display signal of the sub-image of each frame, so that the display signal of the sub-image of each frame is transmitted through the plurality of galvanometers 13 to output the display signal of the sub-image of each frame subjected to the multi-stage vibration processing. The display signals of each frame of sub-images after the multi-stage vibration processing are respectively output to the screen 18, and the projection display of the image to be displayed can be realized.
In one example, the screen is a liftable screen, so that the projection display effect can be better ensured.
Example four
Fig. 15 is a flowchart of a projection display method provided in an embodiment of the present application, and as shown in fig. 15, the projection display method provided in the embodiment of the present application is applied to a projection display device provided in any other embodiment of the present application, where the projection display device includes: the display control module, the digital micro-mirror device and a plurality of galvanometers. The display control module comprises a framing module and a processing module connected with the framing module. The digital micromirror device is connected with the processing module. The plurality of galvanometers are arranged in sequence corresponding to the digital micromirror device. The number and the type of the set galvanometers are determined based on a framing mode preset in the framing module, and the framing mode preset in the framing module is predetermined based on the resolution of an image to be displayed and the display resolution of the digital micromirror device.
Accordingly, the method comprises the steps of:
step 101, the framing module performs framing processing on received image data of an image to be displayed according to a preset framing mode to obtain multi-frame sub-image data; and the resolution of the sub-image corresponding to each frame of sub-image data is consistent with the display resolution of the digital micro-mirror device.
And 102, converting each frame of sub-image data into a corresponding control signal by the processing module.
And 103, outputting the display signal of each frame of sub-image by the digital micro-mirror device according to the control signal corresponding to each frame of sub-image data and the preset output time sequence.
And 104, the plurality of galvanometers respectively execute vibration in corresponding directions based on the output time sequence of the display signals of each frame of sub-images, so that the display signals of each frame of sub-images are transmitted through the plurality of galvanometers to output the display signals of each frame of sub-images subjected to multistage vibration processing, and the display signals of each frame of sub-images subjected to multistage vibration processing are jointly used for projection display of the image to be displayed.
In this embodiment, the framing module may perform framing processing on the received image data of the image to be displayed according to a preset framing manner, so as to obtain multiple frames of sub-image data. And the resolution of the sub-image corresponding to each frame of sub-image data is consistent with the display resolution of the digital micro-mirror device.
Next, the processing module may convert each frame of sub-image data into a corresponding control signal, and send the control signal to the digital micromirror device connected thereto, and the digital micromirror device may control the lens to turn over according to the control signal corresponding to each frame of sub-image data output by the processing module, so as to output a display signal of each frame of sub-image according to a predetermined output timing sequence.
Finally, the plurality of galvanometers may respectively perform vibration in corresponding directions based on an output timing of the display signal of each frame of the sub-image, so that the display signal of each frame of the sub-image is transmitted through the plurality of galvanometers to output the display signal of each frame of the sub-image subjected to the multi-stage vibration processing.
On the basis of the fourth embodiment, the projection display apparatus further includes a lens located between the digital micromirror device and a galvanometer of the plurality of galvanometers that is closest to the digital micromirror device. Correspondingly, the projection display method further comprises the following steps: the lens transmits the display signal of each frame of sub-image output by the digital micromirror device to the plurality of vibrating mirrors, thereby effectively avoiding transmission loss.
On the basis of the fourth embodiment, the projection display device further comprises a preprocessing module connected with the framing module. Correspondingly, the projection display method further comprises the following steps: the preprocessing module preprocesses the image data of the image to be displayed and sends the preprocessed image data of the image to be displayed to the framing module, so that the framing module performs framing processing on the received preprocessed image data of the image to be displayed according to a preset framing mode.
On the basis of the fourth embodiment, the projection display device further includes a signal receiving module and a coding and decoding module connected with the signal receiving module and the preprocessing module. Correspondingly, the projection display method further comprises the following steps: the signal receiving module receives video data of a video to be displayed, which is sent by a signal source; and the coding and decoding module is used for coding and decoding the video data to obtain the image data of the image to be displayed.
In one example, the content to be projected and displayed is a video, and based on the basic principle of projection display, video data of the video to be displayed needs to be converted into image data of an image to be displayed of one frame.
Specifically, the signal receiving module may receive video data of a video to be displayed sent by the signal source, and send the video data to the encoding and decoding module connected to the signal receiving module, the encoding and decoding module may perform encoding and decoding processing on the video data to obtain image data of an image to be displayed, the image data of the image to be displayed may be a differential signal, and the image data of the image to be displayed is sent to the preprocessing module connected to the encoding and decoding module, so that the preprocessing module performs preprocessing on the image data of the image to be displayed.
The projection display method provided by the embodiment is applied to projection display equipment, a framing module can perform framing processing on image data of an image to be displayed according to a preset framing mode to obtain sub-image data with multi-frame resolution consistent with the display resolution of a digital micro-mirror device, a processing module converts each frame of sub-image data into a corresponding control signal so that the digital micro-mirror device outputs a display signal of each frame of sub-image based on the control signal, and then a plurality of vibrating mirrors can respectively execute vibration in corresponding directions based on the output time sequence of the display signal of each frame of sub-image and output the display signal of each frame of sub-image subjected to multi-stage vibration processing. That is to say, in the embodiment of the present application, the image data of the image to be displayed is framed into the multi-frame sub-image data that can be supported by the digital micro-mirror device for display, so that the display signal of each frame of sub-image can be output in a time-sharing manner through the digital micro-mirror device, and then the plurality of vibrating mirrors are utilized to respectively vibrate in corresponding directions, so that the display signal of each frame of sub-image can be presented at a corresponding position, thereby realizing the display of the high-resolution image.
In the several embodiments provided in this application, it should be understood that the above-described apparatus embodiments are merely illustrative, for example, the division of modules is only one logical function division, and in actual implementation, there may be other division manners, for example, a plurality of modules or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware form, and can also be realized in a form of hardware and a software functional module.
Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the application. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A projection display device, comprising: the display control module, the digital micromirror device and a plurality of galvanometers; the display control module comprises a framing module and a processing module; the plurality of galvanometers are arranged in sequence corresponding to the digital micromirror device; the number and the type of the set galvanometers are determined based on a framing mode preset in the framing module; the frame dividing mode preset in the frame dividing module is predetermined based on the resolution of an image to be displayed and the display resolution of the digital micromirror device;
the framing module is used for framing the received image data of the image to be displayed according to a preset framing mode to obtain multi-frame sub-image data; the resolution of the sub-image corresponding to each frame of sub-image data is consistent with the display resolution of the digital micro-mirror device;
the processing module is connected with the framing module and is used for converting each frame of sub-image data into corresponding control signals;
the digital micromirror device is connected with the processing module and is used for outputting display signals of each frame of sub-image according to a preset output time sequence according to control signals corresponding to each frame of sub-image data;
the plurality of galvanometers are used for respectively executing vibration in corresponding directions based on the output time sequence of the display signals of each frame of sub-images so that the display signals of each frame of sub-images are transmitted through the plurality of galvanometers to output the display signals of each frame of sub-images subjected to multistage vibration processing, and the display signals of each frame of sub-images subjected to multistage vibration processing are jointly used for projection display of the image to be displayed.
2. The apparatus of claim 1, wherein the projection display apparatus further comprises: a lens arranged corresponding to the digital micromirror device;
the lens is positioned between the digital micromirror device and the vibrating mirror which is closest to the digital micromirror device in the plurality of vibrating mirrors, and is used for transmitting the display signal of each frame of sub-image output by the digital micromirror device and then transmitting the display signal to the plurality of vibrating mirrors.
3. The apparatus of claim 1, wherein the projection display apparatus further comprises: a preprocessing module;
the preprocessing module is connected with the framing module and is used for preprocessing the image data of the image to be displayed and sending the preprocessed image data of the image to be displayed to the framing module, so that the framing module performs framing processing on the received preprocessed image data of the image to be displayed according to a preset framing mode.
4. The apparatus of claim 3, wherein the projection display apparatus further comprises: the device comprises a signal receiving module and a coding and decoding module;
the signal receiving module is used for receiving video data of a video to be displayed, which is sent by the signal source;
the coding and decoding module is connected with the signal receiving module and the preprocessing module and is used for coding and decoding the video data to obtain the image data of the image to be displayed.
5. A projection display system comprising a projection display device according to any one of claims 1 to 4 and a screen.
6. The system of claim 5, wherein the screen is a liftable screen.
7. A projection display method is applied to a projection display device, and the projection display device comprises: the display control module, the digital micromirror device and a plurality of galvanometers; the display control module comprises a framing module and a processing module connected with the framing module; the digital micromirror device is connected with the processing module; the plurality of galvanometers are arranged in sequence corresponding to the digital micromirror device; the number and the type of the set galvanometers are determined based on a framing mode preset in the framing module; the frame dividing mode preset in the frame dividing module is predetermined based on the resolution of an image to be displayed and the display resolution of the digital micromirror device;
the method comprises the following steps:
the framing module performs framing processing on the received image data of the image to be displayed according to a preset framing mode to obtain multi-frame sub-image data; the resolution of the sub-image corresponding to each frame of sub-image data is consistent with the display resolution of the digital micro-mirror device; the processing module converts each frame of sub-image data into a corresponding control signal; the digital micromirror device outputs a display signal of each frame of sub-image according to a control signal corresponding to each frame of sub-image data and a preset output time sequence; the plurality of galvanometers respectively execute vibration in corresponding directions based on the output time sequence of the display signals of each frame of sub-images, so that the display signals of each frame of sub-images are transmitted through the plurality of galvanometers to output the display signals of each frame of sub-images subjected to multistage vibration processing, and the display signals of each frame of sub-images subjected to multistage vibration processing are jointly used for projection display of the image to be displayed.
8. The method of claim 7, wherein the projection display device further comprises: a lens arranged corresponding to the digital micromirror device; the lens is positioned between the digital micromirror device and the galvanometer closest to the digital micromirror device in the plurality of galvanometers;
the method further comprises the following steps:
and the lens transmits the display signal of each frame of sub-image output by the digital micromirror device and transmits the display signal to the plurality of vibrating mirrors.
9. The method of claim 7, wherein the projection display device further comprises: the preprocessing module is connected with the framing module;
the method further comprises the following steps:
the preprocessing module is used for preprocessing the image data of the image to be displayed and sending the preprocessed image data of the image to be displayed to the framing module, so that the framing module is used for framing the received preprocessed image data of the image to be displayed according to a preset framing mode.
10. The method of claim 9, wherein the projection display device further comprises: the signal receiving module and the coding and decoding module are connected with the signal receiving module and the preprocessing module;
the method further comprises the following steps:
the signal receiving module receives video data of a video to be displayed, which is sent by a signal source; and the coding and decoding module is used for coding and decoding the video data to obtain the image data of the image to be displayed.
CN202111159111.3A 2021-09-30 2021-09-30 Projection display device, method and system Pending CN113824940A (en)

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CN202111159111.3A CN113824940A (en) 2021-09-30 2021-09-30 Projection display device, method and system
CN202280060244.1A CN117882368A (en) 2021-09-30 2022-06-28 Laser projection device, projection display system and projection display method
PCT/CN2022/102066 WO2023050940A1 (en) 2021-09-30 2022-06-28 Laser projection apparatus, projection display system, and projection display method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023050940A1 (en) * 2021-09-30 2023-04-06 青岛海信激光显示股份有限公司 Laser projection apparatus, projection display system, and projection display method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023050940A1 (en) * 2021-09-30 2023-04-06 青岛海信激光显示股份有限公司 Laser projection apparatus, projection display system, and projection display method

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