CN116033132A

CN116033132A - Fault processing method of projection equipment and related equipment

Info

Publication number: CN116033132A
Application number: CN202310041882.5A
Authority: CN
Inventors: 杨硕伟
Original assignee: Qingdao Hisense Laser Display Co Ltd
Current assignee: Qingdao Hisense Laser Display Co Ltd
Priority date: 2023-01-12
Filing date: 2023-01-12
Publication date: 2023-04-28

Abstract

The application discloses a fault processing method of projection equipment and related equipment, and belongs to the technical field of projection display. The method comprises the following steps: the first projection device receives device state data sent by the second projection device through the serial port, and the first projection device switches the display mode of the first projection device from the fusion display mode to the single-machine display mode under the condition that the device state data indicates that the second projection device is in a fault state currently. In the embodiment of the application, the device state data indicates the current state of the second projection device. Therefore, under the condition that the second projection device is in a fault state at present, the first projection device can switch the display mode of the first projection device from the fusion display mode to the single display mode, and then a complete picture is displayed independently through the first projection device. Thus, the problem that the first projection device still displays only half pictures according to the fusion display mode under the condition that the second projection device is in a fault state at present can be solved.

Description

Fault processing method of projection equipment and related equipment

Technical Field

The present disclosure relates to the field of projection display technologies, and in particular, to a fault handling method for a projection device and a related device.

Background

In order to meet the requirements of users on display effects such as large images, multiple colors, high brightness, high resolution and the like in scenes such as command monitoring centers, network management centers, video conferences, academic reports, technical lectures, multifunctional conference rooms and the like, projection images are usually required to be output through a plurality of projection devices, and then the projection images respectively output by the plurality of projection devices are subjected to edge overlapping through a projection fusion technology, so that a complete image with high brightness and high resolution and no gaps is displayed. That is, one complete picture is displayed in common by the plurality of projection devices. However, in practical applications, when any one of the plurality of projection devices fails, the projection device cannot output a projection image, so that other projection devices that do not fail can only display a partial image, and cannot continue to display a complete image.

Disclosure of Invention

The application provides a fault processing method of projection equipment and related equipment, which can solve the problem that in the related technology, under the condition that second projection equipment is in a fault state at present, first projection equipment can only display half pictures. The technical scheme is as follows:

In one aspect, a fault handling method for a projection device is provided, where a video source device is connected to a first projection device and a second projection device, where the video source device is configured to transmit complete video signals to the first projection device and the second projection device, where the first projection device and the second projection device are connected through a serial port, and the method includes:

the first projection device receives device state data sent by the second projection device through the serial port, wherein the device state data indicates the current state of the second projection device;

when the equipment state data indicate that the second projection equipment is in a fault state currently, the first projection equipment switches the display mode of the first projection equipment from a fusion display mode to a single display mode;

the fusion display mode refers to a mode that a plurality of projection devices display a complete picture in a projection fusion mode, and the single-machine display mode refers to a mode that a single projection device displays the complete picture.

On the other hand, a projection device is provided, wherein a video source device is respectively connected with a first projection device and a second projection device, the video source device is used for respectively transmitting complete video signals to the first projection device and the second projection device, the first projection device is connected with the second projection device through a serial port, and the first projection device comprises a television TV board and a micro controller MCU;

The TV board is used for receiving equipment state data sent by the second projection equipment through the serial port, and the equipment state data indicates the current state of the second projection equipment;

the MCU is used for switching the display mode from the fusion display mode to the single-machine display mode under the condition that the equipment state data indicate that the second projection equipment is in a fault state currently;

In another aspect, a computer readable storage medium is provided, in which a computer program is stored, which when executed by a processor, implements the steps of the fault handling method of a projection device described above.

In another aspect, a computer program product is provided comprising instructions which, when run on a computer, cause the computer to perform the steps of the above described fault handling method of a projection device.

The technical scheme that this application provided can bring following beneficial effect at least:

the second projection device sends its own device status data to the first projection device via the serial port, as the device status data indicates the current status of the second projection device. Therefore, under the condition that the second projection device is in a fault state at present, the first projection device can switch the display mode of the first projection device from the fusion display mode to the single display mode, and then a complete picture is displayed independently through the first projection device. Thus, the problem that the first projection device still displays only half pictures according to the fusion display mode under the condition that the second projection device is in a fault state at present can be solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a system architecture provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of two projection devices displaying a complete frame together according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a projection device according to an embodiment of the present application displaying a complete frame alone;

FIG. 4 is a schematic structural diagram of a projection device according to an embodiment of the present disclosure;

FIG. 5 is a flowchart of a method for fault handling of a projection device according to an embodiment of the present application;

FIG. 6 is a schematic diagram of determining fusion configuration information according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a fault handling flow of a projection device according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Before explaining the fault handling method of the projection device provided in the embodiment of the present application in detail, the system architecture provided in the embodiment of the present application is described.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a fault handling system of a projection device according to an exemplary embodiment. The fault handling system of the projection device comprises a video source device 101, a first projection device 102 and a second projection device 103, wherein the video source device 101 is in communication connection with the first projection device 102 and the second projection device 103 through HDMI (High Definition Multimedia Interface ) respectively. The first projection device 102 and the second projection device 103 are connected through a serial port. The first projection device 102 and the second projection device 103 are connected by an RS232 (EIA-RS-232) serial port, for example.

The video source device 101 is configured to transmit a complete video signal to the first projection device 102 and the second projection device 103, respectively, so that a complete picture is subsequently displayed by the first projection device 102 and the second projection device 103.

In an initialization stage after the first projection device 102 and the second projection device 103 are powered on, the first projection device 102 and the second projection device 103 respectively set their respective display modes as a fusion display mode. Meanwhile, the first projection device 102 receives device status data transmitted by the second projection device 103 through the serial port. In the case where the device status data indicates that the second projection device 103 is currently in a normal working state, the first projection device 102 keeps its own display mode unchanged as a fusion display mode, and further, a complete picture is displayed together by the first projection device 102 and the second projection device 103, as shown in fig. 2. In the case where the device status data indicates that the second projection device 103 is currently in a fault state, the first projection device 102 switches its display mode from the fusion display mode to the stand-alone display mode, and then displays a complete screen through the first projection device 102 alone, as shown in fig. 3.

The device state data is obtained by detecting the device state of the second projection device 103 after the second projection device is powered on. That is, after the second projection device 103 is powered on, the second projection device 103 detects its own device status to obtain the device status data, and sends its own device status data to the first projection device 102 through the serial port.

It should be noted that the above description is given by taking the example in which the first projection device 102 adjusts its own display mode in real time based on the device status data of the second projection device 103. Of course, in practical applications, the second projection device 103 may also adjust its own display mode in real time based on the device status data of the first projection device 102, that is, the first projection device 102 and the second projection device 103 are not sequenced.

The video source device may be any electronic product that can interact with a user by one or more of a keyboard, touchpad, touch screen, remote control, voice interaction, or handwriting device, such as a PC (Personal Computer ), cell phone, smart phone, PDA (Personal Digital Assistant ), wearable device, palm top PPC (Pocket PC), tablet, smart car phone, etc.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a projection apparatus according to an embodiment of the present application. In fig. 4, the projection apparatus includes a TV (Television) board, an MCU (Micro Control Unit, microcontroller), a DLP (Digital Light Processing ) element, a DMD (Digital Micro-mirror Device), a color wheel, a laser, a memory, a galvanometer, and a focus lens.

The TV board is provided with an SOC (System-on-a-Chip), the laser is an RGB (Red Green Blue) three-color laser, and the memory is a Flash memory. Of course, in practical application, other types of chips may be disposed on the TV board, and the laser may be other types of lasers, and the memory may be other types of memories. Alternatively, the projection device may also include other components. Such as a TOF camera (Time of Fight Camera) and a fan, to name a few, embodiments of the present application are not limited.

After the projection device is powered on, the video source device transmits a complete video signal to the projection device, and the SOC on the TV board sends the video data to the DLP element through the signal in the V-by-one format. After the DLP element receives the video data, it reads the configuration information from the Flash memory via a signal in SPI (Serial Peripheral Interface ) format and sends the video data to the DMD via a signal in HSSI (High Speed Serial Interface ) format. In addition, the MCU controls the laser to emit laser light through a signal in a PWM (Pulse width modulation ) format, and the laser light emitted from the laser is reflected to the DMD through the color wheel. The DMD converts a received video signal into an optical signal based on laser light reflected by a color wheel. And then, the optical signal is subjected to dithering treatment through a galvanometer, and the dithered optical signal is projected through a focusing lens, so that the projection equipment outputs a projection picture.

Those skilled in the art will appreciate that the video source device and the projection device described above are only examples, and that other video source devices or projection devices that may be present in the present application or in the future are intended to be included within the scope of embodiments of the present application and are incorporated herein by reference.

It should be noted that, the system architecture described in the embodiments of the present application is for more clearly describing the technical solution of the embodiments of the present application, and does not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

Next, a method for processing a fault of the projection apparatus provided in the embodiment of the present application will be explained in detail.

Fig. 5 is a flowchart of a fault handling method of a projection device according to an embodiment of the present application, please refer to fig. 5, and the method includes the following steps.

Step 501: the second projection device detects its own device state to obtain device state data, and sends the device state data to the first projection device through the serial port, where the device state data indicates a current state of the second projection device.

And after the second projection equipment is powered on, detecting the equipment state of the second projection equipment through components such as a TV board, an MCU, a camera, a fan, a laser, a DLP element, a DMD, a color wheel and the like to obtain equipment state data, and transmitting the equipment state data of the second projection equipment to the first projection equipment through a serial port.

In some embodiments, the second projection device detects its device status through components such as a TV board, an MCU, a camera, a fan, a laser, a DLP element, a DMD, and a color wheel, so as to obtain the device status data, which includes the following implementation processes:

(1) The MCU and the fan are communicated through signals in a GPIO (General Purpose Input Output, general purpose input/output) format, so that the rotating speed and the temperature of the fan are detected. And under the condition that the rotating speed and/or the temperature of the fan do not accord with the preset value, indicating that the second projection equipment is in a fault state currently, enabling the second projection equipment to stand by and not output a projection picture, and sending equipment state data to the first projection equipment through a serial port, wherein the equipment state data indicate that the fault type of the second projection equipment is that the rotating speed and/or the temperature of the fan do not accord with the preset value.

For example, the device status data is 0X01. Optionally, after the second projection device detects that the rotation speed and/or the temperature of the fan do not conform to the preset value, the indicator light may be set to red and flash, so as to prompt the user that the second projection device is in a fault state currently, and the fault type is that the rotation speed and/or the temperature of the fan do not conform to the preset value.

(2) The MCU and the DLP element communicate with each other through signals in an I2C (Inter Integrated Circuit, integrated circuit bus) format, so as to detect whether the DLP element receives video signals sent by the TV board or not and whether the DLP element reads configuration information from the memory or not. And under the condition that the DLP element does not receive the video signal or the DLP element does not read the configuration information, indicating that the second projection device is in a fault state currently, the second projection device waits for no projection picture to be output any more, and transmitting device state data to the first projection device through a serial port, wherein the device state data indicates that the fault type of the second projection device is that the DLP element does not receive the video signal or the DLP element does not read the configuration information.

For example, the device status data is 0X02. Optionally, after the second projection device detects that the DLP element does not receive the video signal or the DLP element does not read the configuration information, the indication lamp may be set to red and flash both, so as to prompt the user that the second projection device is currently in a fault state, and the fault type is that the DLP element does not receive the video signal or the DLP element does not read the configuration information.

(3) And the MCU and the SOC on the TV board are communicated through signals in an I2C format, so that whether data interaction between the MCU and the TV board is successful or not is detected. In general, any one of the MCU and the TV board serves as a sender to send data to a receiver, and after receiving the data sent by the sender, the receiver sends a response to the sender, where the response indicates that the receiver has successfully received the data sent by the sender, so as to implement data interaction between the MCU and the TV board.

And under the condition that the sender does not receive the response sent by the receiver, indicating that the second projection equipment is in a fault state, the second projection equipment stands by and does not output a projection picture any more, and sending equipment state data to the first projection equipment through a serial port, wherein the equipment state data indicates that the fault type of the second projection equipment is that the data interaction between the TV board and the MCU fails.

For example, the device status data is 0X03. Optionally, after the second projection device detects that the data interaction between the TV board and the MCU fails, the indicator light may be further set to red and flash three times, so as to prompt the user that the second projection device is currently in a fault state, and the fault type is that the data interaction between the TV board and the MCU fails.

(4) The DLP element and the DMD are communicated through signals in an HSSI format, so that whether the DMD receives video signals sent by the DLP element or not is detected. And under the condition that the DMD does not receive the video signal sent by the DLP element, indicating that the second projection device is in a fault state, the second projection device stands by and does not output a projection picture any more, and sending device state data to the first projection device through the serial port, wherein the device state data indicates that the fault type of the second projection device is that the DMD does not receive the video signal sent by the DLP element.

For example, the device status data is 0X04. Optionally, after the second projection device detects that the DMD does not receive the video signal sent by the DLP element, the indication lamp may be set to red and flash down to prompt the user that the second projection device is currently in a fault state, and the fault type is that the DMD does not receive the video signal sent by the DLP element.

(5) The MCU is communicated with the laser through signals in a PWM format, so that the current and the temperature of the laser are detected. And under the condition that the current and/or the temperature of the laser does not accord with the preset value, indicating that the second projection equipment is in a fault state currently, enabling the second projection equipment to stand by and not output a projection picture any more, and sending equipment state data to the first projection equipment through a serial port, wherein the equipment state data indicate that the fault type of the second projection equipment is that the current and/or the temperature of the laser does not accord with the preset value.

For example, the device status data is 0X05. Optionally, after the second projection device detects that the current and/or the temperature of the laser does not conform to the preset value, the indicator light may be set to red and flash five times, so as to prompt the user that the second projection device is in a fault state currently, and the fault type is that the current and/or the temperature of the laser does not conform to the preset value.

(6) The MCU is communicated with the color wheel through signals in a PWM format, so that the temperature and the rotating speed of the color wheel are detected. And under the condition that the temperature and/or the rotating speed of the color wheel does not accord with the preset value, indicating that the second projection equipment is in a fault state currently, enabling the second projection equipment to stand by and not output a projection picture, and sending equipment state data to the first projection equipment through a serial port, wherein the equipment state data indicates that the fault type of the second projection equipment is that the temperature and/or the rotating speed of the color wheel does not accord with the preset value.

For example, the device status data is 0X06. Optionally, after the second projection device detects that the temperature and/or the rotation speed of the color wheel does not conform to the preset value, the indicator light may be set to red and flash six times, so as to prompt the user that the second projection device is in a fault state currently, and the fault type is that the temperature and/or the rotation speed of the color wheel does not conform to the preset value.

(7) The SOC on the TV board communicates with the camera through signals in USB (Universal Serial Bus ) format, so as to detect whether the picture shot by the camera is identical to the video signal received by the second projection device. That is, the projection screen output by the second projection device is compared with the screen to be projected by the second projection device. And under the condition that the picture shot by the camera is different from the video signal received by the second projection equipment, the second projection equipment is in a fault state at present, the second projection equipment stands by and does not output the projection picture any more, and the equipment state data is sent to the first projection equipment through the serial port, wherein the equipment state data indicates that the fault type of the second projection equipment is that the picture shot by the camera is different from the video signal received by the second projection equipment.

For example, the device status data is 0X07. Optionally, after the second projection device detects that the picture shot by the camera is different from the video signal received by the second projection device, the indication lamp may be set to red and flash to seven, so as to prompt the user that the second projection device is in a fault state currently, and the fault type is that the picture shot by the camera is different from the video signal received by the second projection device.

It should be noted that the above-mentioned 7 types of faults included in the second projection device are only one example. In practical applications, the second projection device may also include other types of faults, which are not limited in this embodiment of the present application. In addition, the preset value corresponding to the rotation speed and/or the temperature of the fan, the preset value corresponding to the current and/or the temperature of the laser, and the preset value corresponding to the temperature and/or the rotation speed of the color wheel may be the same or different, which is not limited in the embodiment of the present application.

Of course, in practical applications, there may be a case where the device status data indicates that the second projection device is currently in a normal operating state. That is, the second projection device detects its own device state through components such as a TV board, an MCU, a camera, a fan, a laser, a DLP element, a DMD, and a color wheel, to obtain device state data indicating that the second projection device is currently in a normal operation state.

For example, the device status data is 0X08. Optionally, after the second projection device detects that the device state of the second projection device is a normal working state, the indication lamp may be set to be white and normally bright, so as to prompt the user that the second projection device is currently in the normal working state.

Step 502: the first projection device receives the device state data sent by the second projection device through the serial port. And under the condition that the equipment state data indicates that the second projection equipment is in a fault state currently, the first projection equipment switches the display mode of the first projection equipment from the fusion display mode to the stand-alone display mode.

The fusion display mode refers to a mode in which a plurality of projection devices display a complete picture in a projection fusion manner, and the stand-alone display mode refers to a mode in which a single projection device displays the complete picture.

The fusion display mode of the first projection device is set in an initialization stage after the first projection device is powered on. In other words, in the initialization stage after the first projection device is powered on, the first projection device sets its own display mode to a fusion display mode, and reads fusion configuration information from the memory, where the fusion configuration information is configuration information required by the fusion display mode.

The first projection device receives the device state data sent by the second projection device, and when the device state data indicates that the second projection device is in a fault state, the first projection device indicates that the second projection device breaks down and cannot output a projection picture. At this time, the first projection device switches its own display mode from the fusion display mode to the stand-alone display mode, so that a complete picture is displayed by the first projection device alone.

The first projection device comprises a TV board, an MCU and a DLP element. The specific implementation process of the first projection device for switching the display mode of the first projection device from the fusion display mode to the single-machine display mode comprises the following steps: the TV board controls the DLP element to execute the reset operation through the MCU, and the DLP element reads the single-unit configuration information after the reset is successful, wherein the single-unit configuration information refers to the configuration information required by the single-unit display mode.

Based on the above description, in the case where the device state data received by the first projection device is any one of 0X01 to 0X07, it is indicated that the second projection device is currently in a failure state. The TV board of the first projection device transmits the device state data to the MCU, which receives the device state data transmitted by the TV board and transmits the device state data to the DLP element. The DLP element receives the device state data sent by the MCU and executes reset operation, and after the DLP element is successfully reset, the DLP element reads the single-machine configuration information from the memory, so that the display mode of the first projection device is switched from the fusion display mode to the single-machine display mode.

That is, the memory stores therein the fusion configuration information and the stand-alone configuration information. In the initialization stage after the first projection device is powered on, the DLP element directly reads the fusion configuration information from the memory to set the display mode of the first projection device to the fusion display mode. When the device state data received by the DLP element is any one of 0X01 to 0X07 described above, the DLP element is restarted. The restarted DLP element reads the stand-alone configuration information from the memory to switch the display mode of the first projection device from the converged display mode to the stand-alone display mode.

It should be noted that the fusion configuration information and the stand-alone configuration information are set in advance. Furthermore, the fusion configuration information and the stand-alone configuration information can be adjusted according to different requirements. For example, the geometric correction picture is taken as a rectangular coordinate system, the origin of the rectangular coordinate system is the upper left corner of the picture, the horizontal direction is the x-axis, and the vertical direction is the y-axis. The horizontal pixel of the geometry correction picture is 3839 and the vertical pixel is 2159. In the stand-alone display mode, the projection screen has an upper left corner coordinate of (0, 0), a lower left corner coordinate of (0, 2159), an upper right corner coordinate of (3839,0), and a lower right corner coordinate of (3839, 2159). That is, the pixel width of the projection screen is 3839, and the pixel height of the projection screen is 2159.

In the fusion display mode, coordinates of a first datum point, a second datum point and a third datum point are measured through a camera included in the projection device, the first datum point is the upper left corner of a projection picture output by the second projection device in the fusion display mode, the second datum point is the upper right corner of the projection picture output by the first projection device in the fusion display mode, and the third datum point is the upper right corner of the projection picture output by the second projection device in the fusion display mode. Then, based on the coordinates of the first reference point, the second reference point, and the third reference point, a screen display scale is allocated to each projection apparatus.

For example, please refer to fig. 6, fig. 6 is a schematic diagram illustrating determining fusion configuration information according to an embodiment of the present application. In fig. 6, the coordinates of the first reference point are (x 1, 0), the coordinates of the second reference point are (x 2, 0), and the coordinates of the third reference point are (x 3, 0). Dividing the whole geometric correction picture into a left split screen and a right split screen, wherein the projection picture output by the first projection equipment is positioned on the left split screen, and the projection picture output by the second projection equipment is positioned on the right split screen.

The first projection apparatus outputs a projection screen having an upper left corner coordinate of (0, 0), a lower left corner coordinate of (0, 2159), an upper right corner coordinate of ((x 2/x 3) × 3839,0), and a lower right corner coordinate of ((x 2/x 3) ×3839, 2159). That is, the first projection device outputs a projection screen having an upper left-hand abscissa of 0, an upper left-hand ordinate of 0, a pixel width of (x 2/x 3) 3839, and a pixel height of 2159.

The projection screen output by the second projection apparatus has an upper left corner coordinate ((x 1/x 3) × 3839,0), a lower left corner coordinate ((x 1/x 3) ×3839, 2159), an upper right corner coordinate (3839,0), and a lower right corner coordinate (3839, 2159). That is, the upper left-hand corner of the projection screen output by the second projection apparatus is (x 1/x 3) 3839, the upper left-hand corner is 0, the pixel width of the projection screen is [ x3-x 1)/x 3 ] 3839, and the pixel height of the projection screen is 2159.

And under the condition that the equipment state data indicates that the second projection equipment is in a normal working state, the second projection equipment is indicated to not have a fault, and a projection picture can be output. At this time, the first projection device keeps the display mode of the first projection device unchanged as a fusion display mode, so that a complete picture is displayed together through the first projection device and the second projection device.

Based on the above description, in the case where the device status data received by the first projection device is 0X08, it is indicated that the second projection device is currently in a normal operating state. The TV board of the first projection device transmits the device state data to the MCU, which receives the device state data transmitted by the TV board and transmits the device state data to the DLP element. The DLP element receives the device state data sent by the MCU, does not need to execute reset operation, does not need to read single-machine configuration information from a memory, and keeps the fusion configuration information read in the initialization stage after power-on unchanged.

For example, referring to fig. 7, fig. 7 is a schematic diagram of a fault handling procedure of a projection device according to an embodiment of the present application. In fig. 7, the first projection device is powered on, and sets its own display mode as a fusion display mode, and the first projection device receives device status data sent by the second projection device through the serial port through the SOC on the TV board. Under the condition that the equipment state data indicate that the second projection equipment is in a normal working state at present, the first projection equipment keeps the display mode of the first projection equipment unchanged as a fusion display mode, and then a complete picture is displayed together through the first projection equipment and the second projection equipment. And under the condition that the equipment state data indicate that the second projection equipment is in a fault state currently, the first projection equipment switches the display mode of the first projection equipment from the fusion display mode to the single-machine display mode, and then a complete picture is displayed independently through the first projection equipment.

It should be noted that, the above description is exemplified by the first projection device receiving the device status data sent by the second projection device, and further adjusting the display mode thereof in real time based on the current status of the second projection device indicated by the device status data. In practical applications, there may be a case where the first projection device does not receive the device status data sent by the second projection device at intervals of a preset duration. For example, the second projection device may not be able to transmit its own device status data to the first projection device due to a shutdown of the second projection device, or the like. At this time, the first projection device switches its own display mode from the fusion display mode to the stand-alone display mode, so that a complete picture is displayed by the first projection device alone.

The preset time period is preset, for example, the preset time period is 1 minute. Moreover, the preset time length can be adjusted according to different requirements.

Optionally, under the condition that the second projection device is turned off, setting the indicator light of the second projection device to be in an unlit state, so as to prompt the user that the second projection device is currently in the off state.

In some embodiments, the second projection device may also adjust its own display mode in real time based on the device status data of the first projection device. In an exemplary embodiment, the second projection device sets its own display mode to the fusion display mode during an initialization phase after the second projection device is powered on. The first projection device detects its own device state to obtain device state data, and sends the device state data to the second projection device through the serial port, where the device state data indicates the current state of the first projection device.

The second projection device receives the device state data sent by the first projection device through the serial port. And under the condition that the equipment state data indicate that the first projection equipment is in a fault state currently, the second projection equipment switches the display mode of the second projection equipment from the fusion display mode to the single-machine display mode, so that a complete picture is displayed independently through the second projection equipment. And under the condition that the equipment state data indicate that the first projection equipment is in a normal working state at present, the second projection equipment keeps the display mode of the second projection equipment unchanged as a fusion display mode, so that a complete picture is displayed together through the first projection equipment and the second projection equipment.

In other embodiments, the second projection device indicates that the first projection device is currently in a shutdown state if the second projection device does not receive the device state data sent by the first projection device for a predetermined period of time. The second projection device switches the display mode of the second projection device from the fusion display mode to the single display mode, so that a complete picture is displayed independently through the second projection device.

The process of the second projection device switching the display mode from the fusion display mode to the stand-alone display mode is similar to the process of the first projection device switching the display mode from the fusion display mode to the stand-alone display mode in the above step 502, and the process of the second projection device keeping the display mode unchanged from the fusion display mode is similar to the process of the first projection device keeping the display mode unchanged from the fusion display mode in the above step 502, so the relevant content of the above step 502 will not be repeated here.

In the embodiment of the application, the second projection device sends the device state data of the second projection device to the first projection device through the serial port, and the device state data indicates the current state of the second projection device. Therefore, under the condition that the second projection device is in a fault state at present, the first projection device can switch the display mode of the first projection device from the fusion display mode to the single display mode, and then a complete picture is displayed independently through the first projection device. Thus, the problem that the first projection device still displays only half pictures according to the fusion display mode under the condition that the second projection device is in a fault state at present can be solved.

The embodiment of the application also provides a projection device, wherein the video source device is respectively connected with the first projection device and the second projection device, the video source device is used for respectively transmitting complete video signals to the first projection device and the second projection device, the first projection device is connected with the second projection device through a serial port, and the first projection device comprises a TV board and an MCU;

Optionally, the first projection device further comprises a DLP element;

the TV board is also used for controlling the DLP element to execute reset operation through the MCU;

the DLP element is used for reading the configuration information of the single unit after the reset is successful, and the configuration information of the single unit refers to the configuration information required by the single unit display mode.

Optionally, the MCU is further used for setting a display mode to be a fusion display mode in an initialization stage after power-on;

the MCU is also used for keeping the display mode unchanged as a fusion display mode under the condition that the equipment state data indicates that the second projection equipment is in a normal working state currently.

Optionally, the TV board is further configured to switch, by the MCU, the display mode from the fusion display mode to the stand-alone display mode if the device status data sent by the second projection device is not received for a preset period of time.

Optionally, the TV board, MCU and DLP elements are also used to detect device status to obtain device status data;

the TV board is also used for transmitting the equipment state data to the second projection equipment through the serial port, and the second projection equipment is used for switching the display mode of the second projection equipment from the fusion display mode to the single-machine display mode under the condition that the first projection equipment is determined to be in a fault state currently.

Optionally, the first projection device includes a TV board, an MCU and a camera connected to the TV board, a fan connected to the MCU, a laser and a DLP element, a DMD connected to the DLP element, a color wheel connected to the laser;

in the case where the first projection device is currently in a fault state, the device state data of the first projection device indicates several fault types:

the rotation speed and/or the temperature of the fan do not accord with preset values;

the DLP element does not receive the video signal transmitted by the TV board, or the DLP element does not read the configuration information;

the data interaction between the TV board and the MCU fails;

the DMD does not receive the video signal sent by the DLP element;

the current and/or temperature of the laser does not meet a preset value;

the temperature and/or the rotating speed of the color wheel do not accord with preset values;

the picture shot by the camera is different from the video signal received by the first projection equipment.

Fig. 8 is a block diagram of a terminal 800 according to an embodiment of the present application, where the terminal 800 may be the above-mentioned projection device. The terminal 800 includes a Central Processing Unit (CPU) 801, a system memory 804 including a Random Access Memory (RAM) 802 and a Read Only Memory (ROM) 803, and a system bus 805 connecting the system memory 804 and the central processing unit 801. Terminal 800 also includes a basic input/output system (I/O system) 806 and storage devices 807 that facilitate the transfer of information between various devices within the computer.

The storage device 807 is connected to the central processing unit 801 through a storage controller (not shown) connected to the system bus 805. The storage device 807 and its associated computer-readable media provide non-volatile storage for the ultrasound device 800. That is, the storage device 807 may include a computer readable medium (not shown) such as a hard disk or CD-ROM drive.

Computer readable media may include computer storage media and communication media without loss of generality. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM, EEPROM, flash memory or other solid state memory technology, CD-ROM, DVD or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will recognize that computer storage media are not limited to the ones described above. The system memory 804 and the storage device 807 described above may be collectively referred to as memory.

The memory also includes one or more programs, one or more programs stored in the memory and configured to be executed by the CPU.

In some embodiments, there is also provided a computer readable storage medium having stored therein a computer program which, when executed by a processor, implements the steps of the fault handling method of the projection device in the above embodiments. For example, the computer readable storage medium may be ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

It is noted that the computer readable storage medium mentioned in the embodiments of the present application may be a non-volatile storage medium, in other words, may be a non-transitory storage medium.

It should be understood that all or part of the steps to implement the above-described embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The computer instructions may be stored in the computer-readable storage medium described above.

That is, in some embodiments, there is also provided a computer program product containing instructions that, when run on a computer, cause the computer to perform the steps of the above-described fault handling method of a projection device.

It should be understood that references herein to "at least one" mean one or more, and "a plurality" means two or more. In the description of the embodiments of the present application, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in order to clearly describe the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second", and the like are used to distinguish the same item or similar items having substantially the same function and effect. It will be appreciated by those of skill in the art that the words "first," "second," and the like do not limit the amount and order of execution, and that the words "first," "second," and the like do not necessarily differ.

It should be noted that, information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data for analysis, stored data, presented data, etc.), and signals related to the embodiments of the present application are all authorized by the user or are fully authorized by the parties, and the collection, use, and processing of related data is required to comply with the relevant laws and regulations and standards of the relevant countries and regions. For example, the device state data referred to in the embodiments of the present application are all acquired with sufficient authorization.

The above embodiments are provided for the purpose of not limiting the present application, but rather, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims

1. The fault processing method of the projection equipment is characterized in that video source equipment is connected with first projection equipment and second projection equipment respectively, the video source equipment is used for transmitting complete video signals to the first projection equipment and the second projection equipment respectively, and the first projection equipment is connected with the second projection equipment through a serial port, and the method comprises the following steps:

2. The method of claim 1, wherein the first projection device comprises a television TV board, a microcontroller MCU, and a digital light processing DLP element;

the first projection device switches the display mode of the first projection device from the fusion display mode to the single-machine display mode, and the first projection device comprises:

the TV board controls the DLP element to execute reset operation through the MCU;

and the DLP element reads the single-unit configuration information after the reset is successful, wherein the single-unit configuration information refers to the configuration information required by the single-unit display mode.

3. The method of claim 1, wherein the method further comprises:

in an initialization stage after the first projection device is powered on, the first projection device sets a display mode of the first projection device as the fusion display mode;

after the first projection device receives the device state data sent by the second projection device through the serial port, the method further comprises:

and under the condition that the equipment state data indicates that the second projection equipment is in a normal working state currently, the first projection equipment keeps the display mode of the first projection equipment unchanged as the fusion display mode.

4. The method of claim 1, wherein the method further comprises:

And under the condition that the first projection equipment does not receive the equipment state data sent by the second projection equipment at intervals of preset time, the first projection equipment switches the display mode of the first projection equipment from the fusion display mode to the stand-alone display mode.

5. The method of any one of claims 1-4, wherein the method further comprises:

the first projection equipment detects the equipment state of the first projection equipment to obtain equipment state data;

the first projection device sends the device state data of the first projection device to the second projection device through the serial port, and the second projection device is used for switching the display mode of the first projection device from the fusion display mode to the single display mode under the condition that the first projection device is determined to be in a fault state currently.

6. The method of claim 5, wherein the first projection device comprises a television TV board, a microcontroller MCU and a camera connected to the TV board, a fan connected to the MCU, a laser, and a digital light processing DLP element, a digital micromirror device DMD connected to the DLP element, a color wheel connected to the laser;

in the case where the first projection device is currently in a fault state, the device state data of the first projection device indicates the following fault types:

The rotating speed and/or the temperature of the fan do not accord with a preset value;

the DLP element does not receive the video signal sent by the TV board, or the DLP element does not read the configuration information;

the data interaction between the TV board and the MCU fails;

the DMD does not receive the video signal sent by the DLP element;

the current and/or temperature of the laser does not accord with a preset value;

the temperature and/or the rotating speed of the color wheel do not accord with a preset value;

and the picture shot by the camera is different from the video signal received by the first projection equipment.

7. The projection device is characterized in that a video source device is connected with a first projection device and a second projection device respectively, the video source device is used for transmitting complete video signals to the first projection device and the second projection device respectively, the first projection device is connected with the second projection device through a serial port, and the first projection device comprises a television TV board and a microcontroller MCU;

8. The projection device of claim 7, wherein the first projection device further comprises a digital light processing DLP element;

the TV board is also used for controlling the DLP element to execute a reset operation through the MCU;

the DLP element is used for reading the single-unit configuration information after the reset is successful, and the single-unit configuration information refers to the configuration information required by the single-unit display mode.

9. The projection device of claim 7,

the MCU is also used for setting the display mode as the fusion display mode in an initialization stage after power-on;

the MCU is also used for keeping the display mode unchanged as the fusion display mode under the condition that the equipment state data indicates that the second projection equipment is in a normal working state currently.

10. The projection device of claim 7,

the TV board is further used for switching the display mode from the fusion display mode to the stand-alone display mode through the MCU under the condition that the equipment state data sent by the second projection equipment are not received at preset intervals.