CN113923426A - Laser projector driving device and laser projector - Google Patents
Laser projector driving device and laser projector Download PDFInfo
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- CN113923426A CN113923426A CN202111320711.3A CN202111320711A CN113923426A CN 113923426 A CN113923426 A CN 113923426A CN 202111320711 A CN202111320711 A CN 202111320711A CN 113923426 A CN113923426 A CN 113923426A
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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]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
- H04N9/3135—Driving therefor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
- H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control
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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
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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]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
Abstract
The application discloses laser projector drive arrangement and laser projector belongs to laser projection technical field. The laser projector driving device includes: the device comprises a control component, an image processing component, a display panel, a color wheel driving component and a laser driving component; the control component is respectively connected with the image processing component, the color wheel driving component and the display panel, the image processing component is connected with the display panel, and the display panel is connected with the laser driving component. The laser projector driving device is provided with the independent control assembly and the independent image processing assembly, the control assembly and the image processing assembly obtain the color control signal based on the video signal, and the display panel controls the optical engine and the laser driving assembly based on the color control signal. Thus, the image processing capacity can be improved by upgrading the image processing assembly. An effect of facilitating the improvement of the image processing capability of the laser projector driving apparatus is achieved.
Description
Technical Field
The present disclosure relates to laser projection technologies, and particularly to a laser projector driving device and a laser projector.
Background
Currently, a laser projector may include a laser projector driving device, an optical engine, and an optical illumination device, and the laser projector driving device is used for driving the optical engine and the optical illumination device to project an image frame.
A laser projector driving device comprises a display panel and a laser driving assembly, wherein the display panel is connected with the laser driving assembly, and the display panel is also used for being connected with an optical engine. The display panel can receive a video signal, process the video signal into a color control signal, and correspondingly control and drive the optical-mechanical engine and the laser driving component based on the color control signal.
However, the laser projector driving device processes images by the display panel, and the display panel is usually a kit with the optical engine and the laser driving component, and is difficult to replace, which results in difficulty in improving the image processing capability of the laser projector driving device.
Disclosure of Invention
The embodiment of the application provides a laser projector driving device and a laser projector. The technical scheme is as follows:
according to a first aspect of the present application, there is provided a laser projector driving apparatus including: the device comprises a control component, an image processing component, a display panel and a laser driving component;
the control assembly is respectively connected with the image processing assembly and the display panel, the image processing assembly is connected with the display panel, the display panel is connected with the laser driving assembly, and the display panel is also used for being connected with an optical engine;
the control component is used for enabling the image processing component to output the color control signal to the display panel based on a video signal when acquiring the control signal;
the control component is used for controlling the display panel based on the control signal, so that the display panel controls the optical engine and the laser driving component based on the color control signal.
Optionally, the laser projector driving device further comprises a signal conversion board, and the signal conversion board is connected with the image processing component;
the signal conversion board is used for receiving the video signal of the first format and outputting the video signal of the second format matched with the image processing component.
Optionally, the laser projector driving device further comprises a main board, and the main board is respectively connected with the control component and the signal conversion board;
the main board is used for transmitting the video signal in the first format to the signal conversion board;
the mainboard is used for transmitting the control signal to the control component.
Optionally, the motherboard includes a system-on-chip and a frame rate conversion chip, the system-on-chip is connected to the frame rate conversion chip, and the frame rate conversion chip is connected to the signal conversion board.
Optionally, the control component includes a micro control unit and a flash memory, the micro control unit is connected to the flash memory and the soc respectively, and the flash memory is used for storing a digital light processing program;
the micro control unit is used for acquiring the digital light processing program and transmitting the digital light processing program to the display panel;
and the micro control unit is used for enabling the image processing assembly to output the color control signal to the display panel based on a video signal when the control signal is acquired.
Optionally, the flash memory is further configured to store an image processing program;
the micro control unit is used for acquiring the image processing program and transmitting the image processing program to the image processing assembly;
the micro control unit is used for controlling the image processing assembly based on the control signal, so that the image processing assembly processes a video signal into a color control signal based on the image processing program, and transmits the color control signal to the display panel.
Optionally, the micro control unit is connected to the system-on-chip via a two-wire serial bus or a universal asynchronous transceiver, the micro control unit is connected to the image processing module via a serial peripheral interface, and the image processing module is connected to the display panel via a high-speed serial port.
Optionally, the laser projector driving device further comprises a color wheel driving component, and the color wheel driving component is connected with the control component;
the control component is used for controlling the color wheel driving component based on the control signal.
In another aspect, embodiments of the present application provide a laser projector including the laser projector driving apparatus described above.
Optionally, the laser projector further comprises an optical-mechanical engine, the optical-mechanical engine comprising a digital micromirror device and a galvanometer.
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
the laser projector driving device is provided with an independent control component and an independent image processing component, the control component and the image processing component obtain a color control signal based on a video signal, and the display panel controls the optical engine and the laser driving component based on the color control signal. Thus, the image processing capability of the laser projector driving device can be improved by upgrading the image processing components. The problem of the image processing ability of laser projector drive arrangement is difficult to promote among the correlation technique is solved, the effect of being convenient for promote the image processing ability of laser projector drive arrangement has been realized.
In addition, the laser projector driving device provided by the embodiment of the application is provided with an independent image processing component and a corresponding control component, the control component controls the image processing component to process the video signal, and the processed color control signal is sent to the display panel, so that the display panel does not need to directly process the video signal. With such a structure, the video signal can be processed by the high-performance image processing assembly, and the maximum resolution of the video signal which can be processed by the laser projector driving device is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a structure of a laser projector in the related art;
fig. 2 is a block diagram of a driving apparatus for a laser projector according to an embodiment of the present disclosure;
fig. 3 is a block diagram of another laser projector driving apparatus according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a laser projector according to an embodiment of the present disclosure.
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
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view of a structure of a laser projector in the related art. The laser projector includes a laser projector driving device 11, an optical illumination device 12, and an optical engine 13.
The laser projector driving device 11 includes a display panel 111, a laser driving component 112, and a color wheel driving component 113, wherein the display panel 111 is connected to the optical engine 13, the color wheel driving component 113, and the laser driving component 112 respectively, and is configured to receive a video signal, process the video signal into a color control signal, and correspondingly control and drive the optical engine 13, the color wheel driving component 113, and the laser driving component 112 based on the color control signal.
In addition, the laser projector driving apparatus 11 may further include a main board 114, and the main board 114 may also be referred to as a TV board.
The optical illumination device 12 may include a color wheel 121 and a laser 122. The color wheel driving unit 113 in the laser projector driving apparatus 11 may be used to drive the color wheel 121, and the laser driving unit 112 may be used to drive the laser 122.
However, the display panel 111 of the laser projector driving device processes images, and the display panel 111 is usually a kit with the optical engine 13, the color wheel driving module 113 and the laser driving module 112, and is difficult to replace, which results in difficulty in improving the image processing capability of the laser projector driving device and difficulty in improving the maximum resolution of the image beam that can be projected by the laser projector driving device. However, most of the display panels at present have difficulty in processing 8K video signals, which greatly limits the development of the laser projector.
Embodiments of the present application provide a laser projector driving device and a laser projector, which can solve the problems in the related art described above.
Fig. 2 is a block diagram of a laser projector driving apparatus according to an embodiment of the present application, where the laser projector driving apparatus 20 includes: a control module 21, an image processing module 22, a display panel 23, and a laser driving module 24.
The control module 21 is connected to both the image processing module 22 and the display panel 23, the image processing module 22 is connected to the display panel 23, and the display panel 23 is connected to the laser driving module 24. The display panel 23 is also adapted to interface with the opto-engine 40.
The control component 21 is configured to obtain a control signal, control the image processing component 22 to process the video signal into a color control signal based on the control signal, and transmit the color control signal to the display panel 23. That is, the control section 21 is configured to cause the image processing section 22 to output a color control signal to the display panel 23 based on the video signal when acquiring the control signal.
The control component 21 is used for controlling the display panel 23 based on the control signal, so that the display panel 23 controls the optical engine and the laser driving component 24 based on the color control signal.
In summary, the laser projector driving device provided in the embodiment of the present application sets the independent control module and the image processing module in the laser projector driving device, and the control module controls the image processing module to process the image signal to obtain the color control signal, and the display panel controls the optical engine and the laser driving module based on the color control signal. Thus, the image processing capability of the laser projector driving device can be improved by upgrading the image processing components. The problem of the image processing ability of laser projector drive arrangement is difficult to promote among the correlation technique is solved, the effect of being convenient for promote the image processing ability of laser projector drive arrangement has been realized.
In addition, the laser projector driving device provided by the embodiment of the application is provided with an independent image processing component and a corresponding control component, the control component controls the image processing component to process the video signal, and the processed color control signal is sent to the display panel, so that the display panel does not need to directly process the video signal. With such a structure, the video signal can be processed by the high-performance image processing component, for example, the 8K video signal can be processed by the image processing component with the capability of processing the 8K video signal, and the color control signal obtained by the processing is sent to the display panel, and the display panel drives the optical engine and other structures based on the color control signal, so that the 8K video can be played on the laser projector, and the bottleneck of 8K resolution is broken through.
Optionally, the laser projector driving device further comprises a signal conversion board, and the signal conversion board is connected with the image processing assembly;
the signal conversion board is used for receiving the video signal of the first format and converting the video signal of the first format into the video signal of the second format matched with the image processing component.
Optionally, the laser projector driving device further includes a main board, and the main board is connected to the control component and the signal conversion board respectively;
the main board is used for transmitting the video signal of the first format to the signal conversion board;
the mainboard is used for transmitting the control signal to the control assembly.
Optionally, the motherboard includes a system-on-chip and a frame rate conversion chip, the system-on-chip is connected to the frame rate conversion chip, and the frame rate conversion chip is connected to the signal conversion board.
Optionally, the control component includes a micro control unit and a flash memory, the micro control unit is respectively connected with the flash memory and the system level chip, and the flash memory is used for storing the digital light processing program;
the micro control unit is used for acquiring a digital light processing program and transmitting the digital light processing program to the display panel;
the micro control unit is used for controlling the display panel so that the display panel controls the optical engine and the laser driving assembly based on the digital light processing program and the color control signal.
Optionally, the flash memory is further used for storing an image processing program;
the micro control unit is used for acquiring an image processing program and transmitting the image processing program to the image processing assembly;
the micro control unit is used for controlling the image processing assembly based on the control signal, so that the image processing assembly processes the video signal into a color control signal based on an image processing program, and transmits the color control signal to the display panel.
Optionally, the micro control unit is connected to the system-on-chip via a two-wire serial bus or a universal asynchronous transceiver, the micro control unit is connected to the image processing module via a serial peripheral interface, and the image processing module is connected to the display panel via a high-speed serial port.
Optionally, the driving device of the laser projector further comprises a color wheel driving component, and the color wheel driving component is connected with the control component;
the control component is used for controlling the color wheel driving component based on the control signal.
Fig. 3 is a block diagram of another laser projector driving apparatus according to an embodiment of the present invention, which is adjusted based on the laser projector driving apparatus shown in fig. 2.
Optionally, the laser projector driving device 20 further includes a color wheel driving component 25, and the color wheel driving component 25 is connected to the control component 21.
The control component 21 is configured to control the color wheel driving component 25 based on the control signal.
The color wheel driving assembly 25 may be configured to drive the color filter wheel and the fluorescent wheel, and in an exemplary embodiment, the optical lighting device includes at least one color filter wheel and at least one fluorescent wheel, and the micro control unit 211 may control the at least one color filter wheel and the at least one fluorescent wheel respectively.
Optionally, the laser projector driving device 20 further includes a signal conversion board 26, which is connected to the image processing assembly. The signal conversion board 26 is configured to receive a video signal in a first format and convert the video signal in the first format into a video signal in a second format that is matched to the image processing component 22. That is, the signal conversion board 26 receives the video signal of the first format and inputs the video signal of the second format matched with the image processing component 22 to the image processing component 22. Matching here may be considered to be a format that the image processing component 22 is capable of processing, i.e. a format that the image processing component 22 matches.
Since the signal formats that can be processed by different image processing components 22 are different, the signal conversion board 26 may be configured so that various image processing components 22 can be applied to the laser projector driving apparatus provided in the embodiments of the present application, thereby reducing the manufacturing difficulty of the laser projector driving apparatus.
Optionally, the image processing component includes a Field Programmable Gate Array (FPGA) board, the first format is v-by-one (a signal transmission Interface standard suitable for a display), the second format is miniSAS (Serial Attached SCSI, SAS), which is a Small Computer System Interface (SCSI) technology that is commonly applied, and miniSAS is an SAS standard. At this time, the signal conversion board 26 may be a V By One to mini-SAS signal conversion board.
Of course, the first format may also be other formats, which is not limited in this embodiment of the application.
When processing video signals, the field programmable gate array board can fully utilize the speed and the structural advantages of the field programmable gate array board, and utilize the internal logic function to improve the speed of image processing. The processing of the image is achieved by a cache structure and clock management.
Optionally, the laser projector driving apparatus further includes a main board 27, which is connected to the control module and the signal conversion board, respectively. The main board 27 may be referred to as a TV board.
The main board 27 is used to transmit the video signal to the signal conversion board 26. The video signal may be a high resolution video signal, such as an 8K video signal.
The main board 27 is used for transmitting control signals to the control component 21.
Optionally, the main board 27 includes a System On Chip (SOC) 271 connected to the Frame Rate Conversion Chip 272 and a Frame Rate Conversion (Frame Rate Conversion) Chip 272 connected to the signal Conversion board. The system-on-chip 271 contains the complete system with the embedded software. The system on chip 271 may be connected to an external device to receive a video signal, for example, may be connected to the external device through a High Definition Multimedia Interface (HDMI) 2.1.
The frame rate conversion chip 272 can be used to improve the definition and the frame rate of the video image, so that the image is more exquisite and smooth, and the user experience is improved. The specific implementation of the frame rate conversion chip 272 may include performing an operation on two adjacent frames, and generating a transition frame between the two frames by the processor to achieve a smoother visual effect.
Optionally, the control component 21 includes a Micro Control Unit (MCU) 211 and a Flash memory (Flash)212, the MCU 211 is connected to the Flash memory 212 and the system on chip 271 respectively, and the Flash memory 212 is used for storing a Digital Light Processing (DLP) program. The micro control Unit is also called a Single Chip Microcomputer (Single Chip Microcomputer) or a Single Chip Microcomputer, and is characterized in that the frequency and specification of a Central Processing Unit (CPU) are properly reduced, and peripheral interfaces such as a Memory (Memory), a counter (Timer), a Universal Asynchronous Receiver/Transmitter (UART), Direct Memory Access (DMA) and the like are integrated on a Single Chip to form a Chip-level computer, so that different combination control is performed on different application occasions. In the present embodiment, the micro control unit 21 may be configured to obtain the digital light processing program 1 and transmit the digital light processing program to the display panel 23.
The mcu 211 is used to control the display panel 23, so that the display panel 23 controls the optical engine 40 and the laser driving assembly 26 based on the digital light processing program and the color control signal.
The laser projector used in the laser projector driving apparatus according to the embodiment of the present disclosure may have three color lasers, such as a red laser, a green laser, and a blue laser, and the laser driving assembly 26 may control the red laser, the green laser, and the blue laser respectively. Illustratively, the color control signal may be a three-color light signal, and the display panel may obtain lighting order (Duty) and display luminance Duty ratio (PWM) information of the red, green and blue lasers based on the three-color light signal, and may transmit the information to the laser driving assembly 26. The driving manner of the laser driving assembly 26 may include: the control of the lasers is realized by controlling the lighting sequence of the red laser, the green laser and the blue laser and the display brightness duty ratio.
Optionally, the flash memory 212 is also used to store an image processing program.
The mcu 211 is configured to acquire an image processing program in the flash memory 212 and transmit the image processing program to the image processing module 22.
The micro control unit 211 is configured to control the image processing component 22 based on the control signal, to cause the image processing component 22 to process the video signal into a color control signal based on an image processing program, and to transmit the color control signal to the display panel 23. That is, the micro control unit 211 is configured to cause the image processing module 22 to output a color control signal to the display panel 23 based on the video signal when acquiring the control signal.
Optionally, the micro control unit 211 is connected to the soc 271 through a two-wire Serial bus (I2C) or a universal asynchronous receiver/transmitter, the micro control unit 211 is connected to the image processing module 22 through a Serial Peripheral Interface (SPI), and the image processing module 22 is connected to the display panel 23 through a High-Speed Serial Interface (HSSI). The image processing component 22 may transmit high speed signals, illustratively up to several gigabits per second (Gbps), to the display panel 23 via the high speed serial port.
In addition, the display panel 23 is connected to the opto-mechanical engine 40 via a high-speed serial port. The display panel may be a DLPC9740 display panel. The display panel 23 can also transmit a high-speed signal to the optical engine 40 through the high-speed serial port to drive the optical engine 40.
Optionally, the image processing component 22 is configured to process the 8K resolution video signal into a red control signal, a green control signal, and a blue control signal. The laser driving assembly 26 may be configured to drive a red laser, a green laser, and a blue laser, and the red control signal, the green control signal, and the blue control signal processed by the corresponding image processing assembly 22 may be respectively used to control the three lasers.
In addition, the laser projector driving device may further include other sub-boards, and the sub-boards may include a key board, a remote control board, a wireless fidelity board, a bluetooth board, and the like, which is not limited in this embodiment of the present application.
In summary, the laser projector driving apparatus provided in the embodiments of the present application sets the independent control module and the image processing module in the laser projector driving apparatus, and the control module controls the image processing module to process the image signal to obtain the color control signal, and the display panel controls the light valve module and the laser driving module based on the color control signal. Thus, the image processing capability of the laser projector driving device can be improved by upgrading the image processing components. The problem of the image processing ability of laser projector drive arrangement is difficult to promote among the correlation technique is solved, the effect of being convenient for promote the image processing ability of laser projector drive arrangement has been realized.
In addition, the laser projector driving device provided by the embodiment of the application is provided with an independent image processing component and a corresponding control component, the control component controls the image processing component to process the video signal, and the processed color control signal is sent to the display panel, so that the display panel does not need to directly process the video signal. With such a structure, the video signal can be processed by the high-performance image processing component, for example, the 8K video signal can be processed by the image processing component with the capability of processing the 8K video signal, and the color control signal obtained by the processing is sent to the display panel, and the display panel drives the optical engine and other structures based on the color control signal, so that the 8K video can be played on the laser projector, and the bottleneck of 8K resolution is broken through.
Fig. 4 is a schematic structural diagram of a laser projector according to an embodiment of the present disclosure. The laser projector 5 includes the laser projector driving device 20 provided in the above embodiment.
In addition, the laser projector 5 includes an optical illumination device 30. The optical illumination device 30 includes a laser assembly 31 and a color wheel assembly 32.
Alternatively, the laser assembly 31 may include a plurality of lasers, for example, the laser assembly 31 may include a red laser, a green laser, and a blue laser.
Color wheel assembly 32 may also include one or more color wheels, which may include, for example, at least one filter color wheel, and/or at least one phosphor wheel. The color filter wheel can be used for improving the purity degree of light beams emitted by the laser, and the fluorescent wheel is used for emitting various colored lights under the excitation of light rays emitted by the laser.
The color wheel driving unit 25 in the laser projector driving apparatus 20 may drive each color wheel separately.
Optionally, the laser projector 5 further includes an optical-mechanical engine 40, and the optical-mechanical engine 40 includes a Digital micro-mirror device (DMD) 41 and a galvanometer 42. The digital micromirror device may include a DMD panel and a large number of small mirrors positioned on the DMD panel. Illustratively, the dmd may be a 0.98 inch dmd with a resolution of 4K (4096 × 2160), and the galvanometer 42 may be a 4-way galvanometer, i.e., a galvanometer that increases the resolution by a factor of 4, and cooperate with the dmd to achieve a resolution of 8K.
A galvanometer is a device that can improve resolution. For example, when the light beam incident on the galvanometer is a parallel light beam (i.e., the incident angle of each light ray in the light beam is the same), the displacement distance of each pixel of the projection image corresponding to the image light beam is equal after the optical lens in the galvanometer swings from one position to another position. The offset of each visual field in the projection lens to the projection screen is consistent, so that high-resolution display of visual pictures can be ensured. Wherein the offset of the field of view refers to the actual displacement distance of the field of view. Can realize that 4K resolution ratio converts 8K resolution ratio into through the rotation of galvanometer, reduce the system design degree of difficulty.
In addition, the laser projector 5 may further include a projection lens for adjusting the light beam emitted from the optical engine 40 and emitting the adjusted light beam out of the laser projector 5 to form an image on the screen.
The display panel in the current laser projector only supports processing video data with 4K resolution at most, which limits the maximum achievable resolution of the laser projector, and the 4K resolution becomes a resolution bottleneck of the laser projector.
In the laser projector provided by the embodiment of the present application, an independent image processing component and a corresponding control component are provided, and the control component controls the image processing component to process the video signal, and the processed color control signal is sent to the display panel, so that the display panel does not need to directly process the video signal. With such a structure, the video signal can be processed by the high-performance image processing component, for example, the 8K video signal can be processed by the image processing component with the capability of processing the 8K video signal, and the color control signal obtained by the processing is sent to the display panel, and the display panel drives the optical engine and other structures based on the color control signal, so that the 8K video can be played on the laser projector, and the bottleneck of 8K resolution is broken through.
In addition, with the rapid development of the current video resolution, higher resolution such as 16K, 32K, etc. may be developed later, and for the laser projector provided in the embodiment of the present application, the maximum resolution that can be supported by the laser projector may also be increased by replacing image processing components with different performances, for example, image processing components with stronger performances may be replaced to process video signals of 16K and 32K.
In addition, the laser projector provided by the embodiment of the application has a simple structure, and can be obtained by modifying the existing laser projector. For example, a micro control unit, a flash memory, and a field programmable gate array may be added to the laser projector shown in fig. 1, and the connection is performed according to the method shown in fig. 3, so that the laser projector provided in the embodiment of the present application may be obtained, and the modification process is simple and the cost is low.
In summary, the laser projector provided in the embodiments of the present application is provided with the independent control module and the image processing module in the laser projector driving device, and the control module controls the image processing module to process the image signal to obtain the color control signal, and the display panel controls the light valve module and the laser driving module based on the color control signal. Thus, the image processing capability of the laser projector driving device can be improved by upgrading the image processing components. The problem of laser projector drive arrangement's image processing ability is difficult to promote among the correlation technique is solved, the effect of being convenient for promote laser projector's image processing ability has been realized.
The term "and/or" in this application is only one kind of association relationship describing the associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A laser projector driving apparatus, characterized by comprising: the device comprises a control component, an image processing component, a display panel and a laser driving component;
the control assembly is respectively connected with the image processing assembly and the display panel, the image processing assembly is connected with the display panel, the display panel is connected with the laser driving assembly, and the display panel is also used for being connected with an optical engine;
the control component is used for enabling the image processing component to output color control signals to the display panel based on the video signals when the control signals are obtained.
2. The laser projector driving apparatus according to claim 1, further comprising a signal conversion board connected to the image processing module;
the signal conversion board is used for receiving the video signal of the first format and outputting the video signal of the second format matched with the image processing component.
3. The laser projector driving apparatus according to claim 2, further comprising a main board connected to the control unit and the signal conversion board, respectively;
the main board is used for transmitting the video signal in the first format to the signal conversion board;
the mainboard is used for transmitting the control signal to the control component.
4. The laser projector driving device according to claim 3, wherein the main board comprises a system-on-chip and a frame rate conversion chip, the system-on-chip is connected to the frame rate conversion chip, and the frame rate conversion chip is connected to the signal conversion board.
5. The laser projector driving apparatus according to claim 4, wherein the control component comprises a micro-control unit and a flash memory, the micro-control unit being connected to the flash memory and the system-on-chip, respectively, the flash memory being configured to store a digital light processing program;
the micro control unit is used for acquiring the digital light processing program and transmitting the digital light processing program to the display panel.
6. The laser projector driving apparatus according to claim 5, wherein the flash memory is further configured to store an image processing program;
the micro control unit is used for acquiring the image processing program and transmitting the image processing program to the image processing assembly;
and the micro control unit is used for enabling the image processing assembly to output the color control signal to the display panel based on a video signal when the control signal is acquired.
7. The laser projector driving apparatus according to claim 5, wherein the micro control unit is connected to the system-on-chip via a two-wire serial bus or a universal asynchronous receiver/transmitter, the micro control unit is connected to the image processing module via a serial peripheral interface, and the image processing module is connected to the display panel via a high-speed serial port.
8. The laser projector driving apparatus according to any one of claims 1 to 7, further comprising a color wheel driving module, wherein the color wheel driving module is connected to the control module.
9. A laser projector characterized in that the laser projector comprises the laser projector driving apparatus according to any one of claims 1 to 8.
10. The laser projector driving apparatus according to claim 9, wherein the laser projector further comprises an optical engine, the optical engine including a digital micromirror device and a galvanometer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320711.3A CN113923426A (en) | 2021-11-09 | 2021-11-09 | Laser projector driving device and laser projector |
| 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111320711.3A CN113923426A (en) | 2021-11-09 | 2021-11-09 | Laser projector driving device and laser projector |
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| Publication Number | Publication Date |
|---|---|
| CN113923426A true CN113923426A (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111320711.3A Pending CN113923426A (en) | 2021-09-30 | 2021-11-09 | Laser projector driving device and laser projector |
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| CN (1) | CN113923426A (en) |
Cited By (1)
| 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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2021
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Cited By (1)
| 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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