WO2021253981A1 - 激光投影设备及其开机方法 - Google Patents

激光投影设备及其开机方法 Download PDF

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Publication number
WO2021253981A1
WO2021253981A1 PCT/CN2021/089268 CN2021089268W WO2021253981A1 WO 2021253981 A1 WO2021253981 A1 WO 2021253981A1 CN 2021089268 W CN2021089268 W CN 2021089268W WO 2021253981 A1 WO2021253981 A1 WO 2021253981A1
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WIPO (PCT)
Prior art keywords
display
power
component
response
instruction
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PCT/CN2021/089268
Other languages
English (en)
French (fr)
Inventor
朱亚文
张鹏
郭大勃
陈许
赵一石
张继栋
Original Assignee
青岛海信激光显示股份有限公司
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Application filed by 青岛海信激光显示股份有限公司 filed Critical 青岛海信激光显示股份有限公司
Priority to CN202180041714.5A priority Critical patent/CN115668912A/zh
Publication of WO2021253981A1 publication Critical patent/WO2021253981A1/zh
Priority to US17/704,407 priority patent/US20220215781A1/en

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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
    • 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
    • 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
    • G09G3/002—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 to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
    • 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]
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user

Definitions

  • the present disclosure relates to the field of projection display, in particular to a laser projection device and a startup method thereof.
  • the laser projection equipment includes a power supply, a main control circuit, a display drive circuit, a display component and an audio playback component.
  • the main control circuit After receiving the standby command, the main control circuit will control the power supply to stop supplying power to the display drive circuit. At the same time, the main control circuit can save the currently displayed image and the audio corresponding to the image. After that, the main control circuit will control the power supply to supply power to the display driving circuit after receiving the booting instruction, so that the display driving circuit will turn on the display assembly after startup.
  • the main control circuit can continue to send the saved image to the display drive circuit, and send the audio corresponding to the image to the audio playback component, so as to continue to play the image and sound played when the standby instruction is received.
  • the power supply does not stop supplying power to the main control circuit. Therefore, after receiving the power-on instruction, the main control circuit can directly send the saved audio to the audio playback component, so that the audio playback component can play the audio.
  • the display driving circuit turns on the display component only after it is started. Therefore, the audio playback component has started to play the audio corresponding to the image before the display component is started, so that the played audio is out of sync with the displayed image.
  • the laser projection device includes a power supply, a display drive circuit, an audio playback component, and a display component;
  • the power supply is used for receiving a power-off instruction when the display component displays the target image and the audio playback component plays the target audio, and in response to the power-off instruction, stops supplying power to the display drive circuit, And receiving a power-on command and supplying power to the display drive circuit in response to the power-on command, the power-off command is sent to the power supply in response to a standby command, and the power-on command is in response to a power-on command Sent to the power source;
  • the display driving circuit is configured to receive a first image signal, and control the display assembly to display a candidate image in response to the first image signal, and receive a second image signal, and control the display component in response to the second image signal.
  • the display component displays the target image
  • the first image signal is sent to the display drive circuit in response to the standby instruction, and is sent to the display drive circuit in response to the power-on instruction, the first image signal 2.
  • the image signal is sent to the display driving circuit after detecting that the display component is in an on state;
  • the audio playback component is configured to receive and play the target audio, and the target audio is sent to the audio playback component after detecting that the display component is in an on state.
  • a method for starting up a laser projection device which is applied to a laser projection device.
  • the laser projection device includes a power supply, a display drive circuit, an audio playback component, and a display component; the method includes:
  • the power supply receives a power-off instruction, and in response to the power-off instruction, stops supplying power to the display driving circuit, the The power-off command is sent to the power supply in response to the standby command;
  • the display driving circuit receives a first image signal, and controls the display component to display a candidate image in response to the first image signal;
  • the power supply receives a power-on instruction, and in response to the power-on instruction, supplies power to the display driving circuit, the power-on instruction being sent to the power supply in response to the power-on instruction;
  • the display driving circuit receives the first image signal, and controls the display component to display a candidate image in response to the first image signal;
  • the display driving circuit receives a second image signal and controls the display component to display the target image in response to the second image signal, the audio playback component receives and plays the target audio, and the second image signal is
  • the target audio is sent to the display driving circuit after detecting that the display component is in the on state, and the target audio is sent to the audio playback component after detecting that the display component is in the on state.
  • FIG. 1 is a schematic structural diagram of a laser projection device provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of another laser projection device provided by an embodiment of the present disclosure.
  • FIG. 3 is a flowchart of a method for starting up a laser projection device provided by an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a method for starting up a laser projection device provided by an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of another laser projection device provided by an embodiment of the present disclosure.
  • FIG. 6 is a flowchart of a laser projection device entering a standby state according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart of starting up a laser projection device provided by an embodiment of the present disclosure.
  • FIG. 8 is a flowchart of a display driving circuit driving a display component to turn on during a boot process according to an embodiment of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a laser projection device provided by an embodiment of the present disclosure.
  • the laser projection device may include a host 100 and a projection screen 200.
  • the laser projection device may be an ultra-short throw laser projection device.
  • Fig. 2 is a schematic structural diagram of a laser projection device provided by an embodiment of the present disclosure.
  • the host 100 of the laser projection device may include a power supply 10, a display driving circuit 20, an audio playback component 30 and a display component 40.
  • the power supply 10 is respectively connected to the display drive circuit 20, the audio playback component 30 and the display component 40, and the display drive circuit 20 is also connected to the display component 40.
  • Fig. 3 is a flowchart of a method for starting up a laser projection device provided by an embodiment of the present disclosure.
  • the starting method can be applied to the laser projection device shown in FIG. 2.
  • the laser projection device may include a power supply 10, a display driving circuit 20, an audio playback component 30 and a display component 40.
  • the method may include:
  • step 301 during the process that the display component displays the target image and the audio playback component plays the target audio, the power supply receives a power-off instruction, and in response to the power-off instruction, stops supplying power to the display driving circuit.
  • the power-off command is sent to the power supply in response to the standby command.
  • step 302 the display driving circuit receives the first image signal, and in response to the first image signal, controls the display component to display the candidate image.
  • the first image signal includes image data of the candidate image.
  • Step 303 The power supply receives the power-on instruction, and in response to the power-on instruction, supplies power to the display driving circuit.
  • the power-on command is sent to the power supply in response to the power-on command.
  • Step 304 The display driving circuit receives the first image signal, and controls the display component to display the candidate image in response to the first image signal.
  • the display driving circuit since the display driving circuit receives the first image signal after standby, the candidate image indicated by the first image signal becomes the last frame image displayed before standby, thereby ensuring that after power on,
  • the display driving circuit may first receive the first image signal, and control the display component to display the candidate image in response to the first image signal.
  • Step 305 The display driving circuit receives the second image signal and controls the display component to display the target image in response to the second image signal, and the audio playback component receives and plays the target audio.
  • the second image signal is sent to the display driving circuit after detecting that the display component is in an on state, and the second image signal includes image data of the target image.
  • the target audio is sent to the audio playback component after detecting that the display component is in the on state.
  • the embodiments of the present disclosure provide a method for booting up a laser projection device.
  • the display driving circuit can respond to receiving The first image signal controls the display component to display the candidate image. Make the candidate image indicated by the first image signal become the last frame of image displayed before standby, thereby ensuring that the display driving circuit can receive the first image signal again after power-on, and control the display in response to the first image signal
  • the component displays an alternative image.
  • the display driving circuit may receive the second image signal and control the display component to display the target image in response to the second image signal, and the audio playback component receives and plays the target audio. Since the audio playback component does not receive audio before the display component is turned on, this avoids the situation where the display component is not yet turned on and the audio playback component has already played audio, ensuring the played audio and displayed image Synchronization.
  • Fig. 4 is a flowchart of a method for starting up a laser projection device provided by an embodiment of the present disclosure.
  • the starting method can be applied to the laser projection device shown in FIG. 2.
  • the laser projection device may include a power supply 10, a display driving circuit 20, an audio playback component 30 and a display component 40.
  • the method may include:
  • Step 401 During the process in which the display component displays the target image and the audio playback component plays the target audio, the display driving circuit receives a closing instruction, and turns off the display component in response to the closing instruction.
  • the shutdown command is sent to the display driving circuit 20 in response to the standby command.
  • the laser projection device may further include a main control circuit 50, and the shutdown instruction may be sent by the main control circuit 50 to the display driving circuit 20 in response to the standby instruction.
  • the main control circuit 50 receives a standby instruction, it can send a shutdown instruction to the display driving circuit 20 in response to the standby instruction.
  • the display driving circuit 20 can turn off the display assembly 40 in response to the closing instruction.
  • the user can send a standby command to the main control circuit 50 through the remote control 00.
  • the main control circuit 50 can respond to the standby command to the display driving circuit 20. Send a close command.
  • a touch button 01 is provided on the laser projection device.
  • the touch button 01 may include a standby button. After receiving the user's selection operation of the standby button, the main control circuit 50 generates a standby instruction, and can send a shutdown instruction to the display driving circuit 20 in response to the standby instruction.
  • the laser projection device may further include a display panel 02 and a light valve plate 03
  • the display driving circuit 20 may include a display driving sub-circuit 21, a laser driving sub-circuit 22 and a light valve driving sub-circuit 23.
  • the display assembly 40 may include a laser 41 and a light valve 42.
  • the display driving sub-circuit 21 and the light valve driving sub-circuit 23 are both arranged on the display board 02.
  • the light valve 42 is disposed on the light valve plate 03, and the light valve 42 may be a digital micro-mirror device (DMD).
  • the display driving sub-circuit 21 is connected to the main control circuit 50, the laser driving sub-circuit 22 and the light valve driving sub-circuit 23 respectively.
  • the laser projection device may further include a fan, and the fan is connected to the display driving sub-circuit 21.
  • FIG. 6 is a flowchart of a laser projection device entering a standby state according to an embodiment of the present disclosure. Referring to Figure 6, the process may include:
  • Step 4010 The main control circuit receives the standby instruction and sends a shutdown instruction to the display driving sub-circuit in response to the standby instruction.
  • Step 4011 In response to the closing command, the display driving sub-circuit sends the closing command to the laser driving sub-circuit and the light valve driving sub-circuit, and turns off the fan.
  • Step 4012 the laser driving sub-circuit turns off the laser in response to the shutdown command.
  • the laser driving sub-circuit 22 may stop providing the driving current to the laser 41 in response to the shutdown instruction, thereby turning off the laser 41.
  • Step 4013 the light valve driving sub-circuit closes the light valve in response to the closing command.
  • the light valve driving sub-circuit 23 can respond to the closing command to stop supplying the driving current to the light valve 42 so as to close the light valve 42.
  • the main control circuit 50 may be connected to the display driving sub-circuit 21 through an integrated circuit bus (inter-intergrated circuit, I2C), and the main control circuit 50 may send a shutdown command to the display driving sub-circuit 21 through the I2C .
  • I2C integrated circuit bus
  • the display driving sub-circuit 21 and the light valve driving sub-circuit 23 may also be connected via I2C. Then the display driving sub-circuit 21 can send the closing command to the light valve driving sub-circuit 23 through the I2C.
  • Step 402 The power supply receives the power-off instruction, and in response to the power-off instruction, stops supplying power to the display driving circuit.
  • the main control circuit 50 may also send a power-off instruction to the power supply 10.
  • the power supply 10 may receive the power-off instruction and respond to the power-off instruction, The power supply to the display drive circuit 20 is stopped.
  • the power supply 10 is connected to the display driving sub-circuit 21 and the light valve driving sub-circuit 23, and the power supply 10 can stop supplying power to the display driving sub-circuit 21 and the light valve driving sub-circuit 23 in response to a power-off instruction.
  • the power supply 10 is connected to each circuit and device on the display board 02.
  • Step 403 The display driving circuit receives the first image signal, and controls the display component to display the candidate image in response to the first image signal.
  • the main control circuit 10 after the main control circuit 10 sends a shutdown instruction to the display drive circuit 30, it can also send a first image signal to the display drive circuit 20, and the display drive circuit 20 can receive the first image signal and respond to The first image signal controls the display component 40 to display the candidate image.
  • the main control circuit 50 may send a first image signal to the light valve driving sub-circuit 23 in response to a standby instruction, and the light valve driving sub-circuit 23 may receive image data of candidate images included in the first image signal,
  • the light valve 42 is controlled to flip, and the light valve 42 reflects the light beam irradiated on its surface to the projection screen, so as to realize the display of candidate images.
  • the display driving circuit 20 may further include an image processing sub-circuit 24, which is connected to the main control circuit 50 and the light valve driving sub-circuit 23, respectively, and the image processing sub-circuit 24 is connected to the main control circuit 50 through a connector 04, which can be a socket.
  • the main control circuit 50 can send the first image signal to the image processing sub-circuit 24 in response to the standby instruction, and the image processing sub-circuit 24 decodes the image data of the candidate image included in the first image signal, and decodes the decoded image data.
  • the image data is sent to the light valve driving sub-circuit 23.
  • the light valve driving sub-circuit 23 can control the light valve 42 to flip according to the decoded image data, and the light valve 42 reflects the light beam irradiated on the surface to the projection screen, thereby realizing the display of candidate images.
  • step 401 the display drive circuit 20 has closed the display assembly 40, that is, the laser drive sub-circuit 22 has closed the laser 41, and the light valve drive sub-circuit 23 has closed the light valve 42. Therefore, in step 403, even if the display driving circuit 20 receives the first image signal, the display component 40 cannot actually display the candidate image.
  • the main control circuit 50 after receiving the standby instruction, sends the first image signal to the display driving circuit 20, thereby making the playback priority of the candidate image higher than the playback priority of the target image and target audio. class.
  • the laser projection device enters the suspend to ram (STR) state.
  • the candidate image, target image and target audio are all saved in the memory.
  • step 404 the power supply receives the power-on instruction, and in response to the power-on instruction, supplies power to the display driving circuit.
  • the power-on command is sent to the power supply in response to the power-on command.
  • the power-on instruction is that the main control circuit 50 can send a power-on instruction to the power supply 10 in response to the power-on instruction, and the power supply 10 can receive the power-on instruction and can respond to the power-on instruction as The display driving circuit 20 supplies power.
  • the user can send a start-up instruction to the main control circuit 50 through the remote control 00.
  • the main control circuit 50 can respond to the start-up instruction to send an upper command to the power supply 10. Electric order.
  • the touch button 01 may include a power-on button, and the main control circuit 50 generates a power-on instruction after receiving a user's selection operation on the power-on button, and can send a power-on instruction to the power supply 10 in response to the power-on instruction instruction.
  • the power supply 10 can supply power to the display driving sub-circuit 21 and the light valve driving sub-circuit 23 in response to a power-on command.
  • Step 405 The display driving circuit receives the first image signal, and controls the display component to display the candidate image in response to the first image signal.
  • the main control circuit 50 responds to the power-on instruction, and while sending the power-on instruction to the power supply 10, it can also send the first image signal to the display drive circuit 20, and the display drive circuit 20 can respond to the first image signal.
  • An image signal controls the display assembly 40 to display candidate images.
  • the power supply 10 does not stop supplying power to the main control circuit 50 during the standby process, and because after receiving the standby command, the main control circuit 50 sends the first image signal to the display drive circuit 20, so that The playback priority of the candidate image is higher than the playback priority of the target image and target audio. Therefore, the main control circuit 50 can directly send the first image signal to the display driving circuit 20 after receiving the power-on instruction. Since the power supply 10 stops supplying power to the display drive circuit 20 during the standby process, the display drive circuit 20 can only start the display assembly 40 after the power supply 10 supplies power to the display drive circuit 20 and the start of the display drive circuit 20 is completed. . Therefore, before the display driving circuit 20 starts the display component 40, even if the main control circuit 50 sends the first image signal to the display driving sub-circuit 21, the display component 40 cannot actually display the candidate image.
  • Step 406 The main control circuit detects whether the display component is in an on state.
  • the main control circuit 50 After the main control circuit 50 sends the first image signal to the display driving circuit 20, it can also detect whether the display component 40 is in the on state. If it is detected that the display component 40 is in the on state, the main control circuit 50 can determine that the display component 40 can display To output the image, go to step 407. If it is detected that the display component 40 is not in the on state, the main control circuit 50 can determine that the display component 40 cannot display an image, and therefore can continue to perform step 406.
  • the main control circuit 50 can obtain the indication value from the display driving circuit 20. If the indicated value is the target value, it can be determined that the display assembly 40 is in the on state. Wherein, the indication value is used to indicate whether the laser 41 is in the on state.
  • the target value may be 1.
  • the main control circuit 50 can obtain the indication value from the register of the display driving sub-circuit 21.
  • the display driving circuit 20 may send a confirmation command to the main control circuit 50 after the laser 41 is turned on.
  • the main control circuit 50 determines that the display assembly 40 is in the on state.
  • the display driving sub-circuit 21 and the light valve driving sub-circuit 23 start to start, that is, the display driving sub-circuit 21 and the light
  • the valve drive sub-circuit 23 starts self-checking.
  • the display driving sub-circuit 21 may send a start instruction to the laser driving sub-circuit 22, and the laser driving sub-circuit 22 may turn on the laser 41 in response to the start instruction.
  • the display driving sub-circuit 21 sends a start command to the laser driving sub-circuit 22, it may also send a confirmation command to the main control circuit 50.
  • the light valve driving sub-circuit 23 opens the light valve 42 after the start-up is completed.
  • Step 407 The main control circuit sends the second image signal to the display driving circuit, and sends the target audio to the audio playback component.
  • the main control circuit 50 After the main control circuit 50 determines that the display component 40 is in the on state, it can send the second image signal to the display drive circuit 20 and send the target audio to the audio playback component 30.
  • the display drive circuit 20 can control the second image signal.
  • the display component 40 is controlled to display the target image. As a result, the display component 40 continues to display the target image, and the audio playback component 30 continues to play the target audio.
  • the audio playback component 30 includes a power amplifier component 31 and a player 32, and the player 32 may be a speaker.
  • the main control circuit 50 can send the target audio to the power amplifier component 31, and the power amplifier component 31 can control the player to play the target audio.
  • FIG. 7 is a flowchart of starting up a laser projection device provided by an embodiment of the present disclosure.
  • the startup process of the laser projection device may include:
  • Step 701 The main control circuit receives the power-on instruction, and sends a power-on instruction to the power supply in response to the power-on instruction.
  • Step 702 In response to the power-on instruction, the power supply supplies power to the display driving circuit.
  • Step 703 The main control circuit sends the first image signal to the display driving circuit.
  • step 704 the display driving circuit controls the display component to display the candidate image in response to the first image signal.
  • Step 705 After detecting that the display component is in the on state, the main control circuit sends the second image signal to the display driving circuit and sends the target audio to the audio playback component.
  • FIG. 8 is a flowchart of a display driving circuit driving a display component to turn on during a boot process according to an embodiment of the present disclosure. Referring to Figure 8, the process may include:
  • step 801 the power supply supplies power to the display driving sub-circuit and the light valve driving sub-circuit respectively.
  • step 802 the light valve driving sub-circuit is started after the light valve is started, and the light valve is controlled to display a candidate image according to the received first image signal.
  • step 803 the display driving sub-circuit turns on the fan after the startup is completed, and controls the laser driving sub-circuit to turn on the laser.
  • step 804 after detecting that the laser is turned on, the main control circuit sends the second image signal to the light valve driving sub-circuit, and sends the target audio to the audio playback component.
  • step 805 the light valve driving sub-circuit controls the light valve to display the target image according to the second image signal, and the audio playback component plays the target audio at the same time.
  • the candidate image may be a black image. Even if the laser 41 is already in the on state, but the main control circuit 50 has not detected that the display component 40 is in the on state, the display component 40 displays the device. Select the image, the user can only see the black image. Therefore, when the main control circuit 50 detects that the display component 40 is in the on state, it sends the second image signal to the display drive circuit 20 and sends the target audio to the audio playback component 30, and then the display component 40 displays the target image. The user can see the image displayed by the display component 40 before the standby, which ensures that the same image is seen before the standby and after the power is turned on, thereby ensuring the continuity of the user's viewing.
  • the candidate image may also be an image of other colors.
  • the candidate image may be a white image or a color image.
  • step 401 when the display component 40 displays the target image and the audio playback component 30 plays the target audio, the main control circuit 50 actually runs the video application program.
  • step 403 in the process of sending the first image signal to the display driving circuit 20, the main control circuit 50 actually runs the image application program to open the candidate image through the image application program.
  • the running priority of the image application is higher than the running priority of the video application.
  • the main control circuit 50 can directly run the image application program, thereby sending the first image signal To display driving circuit 20.
  • the laser projection device may further include a main board 05, a first memory 61, a second memory 62, and a flat cable 06.
  • the display driving circuit 20 may include two light valve driving sub-circuits 23.
  • each light valve driving sub-circuit 23 can be connected to the light valve 42 through a flat cable 06.
  • the image processing sub-circuit 24 is connected to the first memory 61, and each light valve driving sub-circuit 23 is connected to the second memory 62.
  • the image processing sub-circuit 24 can divide the decoded image data into two sub-image data, and send each sub-image data to the corresponding The light valve driving sub-circuit 23, each light valve driving sub-circuit 23 can control the light valve 42 to invert according to the corresponding sub-image data.
  • the power supply 10 stops supplying power to all circuits and devices on the display panel, that is, the power supply 10 also stops supplying power to the image processing sub-circuit 24. Then, after the power supply 10 receives the power-on instruction and supplies power to the image processing sub-circuit 24 and each light valve driving sub-circuit 23, the image processing sub-circuit 24 can read the program from the first memory 61 and initialize it to complete the startup. . Each light valve driving sub-circuit 23 can read a program from the second memory 62 connected to it for initialization to complete the startup.
  • the power supply 10 may be a power supply board, and the laser driving sub-circuit 22 may be provided on the power supply board.
  • the display driving sub-circuit 21 can also turn off the fan after receiving the shutdown instruction sent by the main control circuit 50.
  • step 402 and step 403 can be performed at the same time. Any person skilled in the art within the technical scope disclosed in the present disclosure can easily conceive of various methods, which should be covered by the protection scope of the present disclosure, and therefore will not be repeated.
  • the embodiments of the present disclosure provide a method for booting up a laser projection device.
  • the display component displays the target image and the audio playback component plays the target audio.
  • the display driving circuit can be based on the received
  • the first image signal controls the display component to display the candidate image. Make the candidate image indicated by the first image signal become the last frame of image displayed before standby, thereby ensuring that the display driving circuit can receive the first image signal again after power-on, and control the display in response to the first image signal
  • the component displays an alternative image.
  • the display driving circuit may receive the second image signal and control the display component to display the target image in response to the second image signal, and the audio playback component receives and plays the target audio. Since the audio playback component does not receive audio before the display component is turned on, this avoids the situation where the display component is not yet turned on and the audio playback component has already played audio, ensuring the played audio and displayed image Synchronization.
  • an embodiment of the present disclosure provides a laser projection device.
  • the laser projection device may include a power supply 10, a display drive circuit 20, an audio playback component 30, and a display component 40.
  • the power supply 10 is used for receiving a power-off instruction when the display component 40 displays the target image and the audio playback component 30 plays the target audio, and in response to the power-off instruction, stops supplying power to the display driving circuit 20. And receiving a power-on command and responding to the power-on command to supply power to the display driving circuit 20.
  • the power-off command is sent to the power supply 10 in response to the standby command, and the power-on command is sent to the power supply 10 in response to the power-on command.
  • the display driving circuit 20 is configured to receive the first image signal, and control the display assembly 40 to display the candidate image in response to the first image signal. And receiving a second image signal and controlling the display assembly 40 to display the target image in response to the second image signal.
  • the first image signal is sent to the display driving circuit 20 in response to the standby command and sent to the display driving circuit in response to the power-on command 20's.
  • the second image signal is sent to the display driving circuit 20 after detecting that the display assembly 40 is in the on state.
  • the audio playback component 30 is used to receive and play target audio, and the target audio is sent to the audio playback component 30 after detecting that the display component 40 is in an on state.
  • the embodiments of the present disclosure provide a laser projection device.
  • the main control circuit in the laser projection device displays a target image on a display component, and the audio playback component plays the target audio.
  • the received first image signal controls the display component to display the candidate image. Make the candidate image indicated by the first image signal become the last frame of image displayed before standby, thereby ensuring that the display driving circuit can receive the first image signal again after power-on, and control the display in response to the first image signal
  • the component displays an alternative image.
  • the display driving circuit may receive the second image signal and control the display component to display the target image in response to the second image signal, and the audio playback component receives and plays the target audio. Since the audio playback component does not receive audio before the display component is turned on, this avoids the situation where the display component is not yet turned on and the audio playback component has already played audio, ensuring the played audio and displayed image Synchronization.
  • the laser projection device further includes a main control circuit 50, and the display assembly 40 includes a laser 41.
  • the main control circuit 50 is used for:
  • the indication value is obtained from the display driving circuit 20, and the indication value is used to indicate whether the display assembly 40 is in an on state.
  • the second image signal is sent to the display driving circuit 20, and the target audio is sent to the audio playback component 30.
  • the laser projection device further includes a main control circuit 50, and the display assembly 40 includes a laser 41.
  • the display driving circuit 20 is also used to send a confirmation command to the main control circuit 50 after the laser 41 is turned on.
  • the main control circuit 50 is used for:
  • the second image signal is sent to the display driving circuit 20, and the target audio is sent to the audio playback component 30.
  • the candidate image is a black image.
  • the display drive circuit 20 is also used to receive a shutdown instruction and turn off the display assembly 40 in response to the shutdown instruction.
  • the shutdown instruction is sent to the display drive circuit 20 in response to the standby instruction.
  • the embodiments of the present disclosure provide a laser projection device.
  • the main control circuit in the laser projection device displays a target image on a display component and the audio playback component plays the target audio.
  • the received first image signal controls the display component to display the candidate image. Make the candidate image indicated by the first image signal become the last frame of image displayed before standby, thereby ensuring that the display driving circuit can receive the first image signal again after power-on, and control the display in response to the first image signal
  • the component displays an alternative image.
  • the display driving circuit may receive the second image signal and control the display component to display the target image in response to the second image signal, and the audio playback component receives and plays the target audio. Since the audio playback component does not receive audio before the display component is turned on, this avoids the situation where the display component is not yet turned on and the audio playback component has already played audio, ensuring the played audio and displayed image Synchronization.

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Abstract

提供了一种激光投影设备及其开机方法，激光投影设备中的电源（10）用于在显示组件（40）显示目标图像，且音频播放组件（30）播放目标音频的过程中，响应于下电指令，停止为显示驱动电路（20）供电，以及响应于上电指令，为显示驱动电路（20）供电。显示驱动电路（20）用于接收第一图像信号，并响应于第一图像信号控制显示组件（40）显示备选图像，以及接收第二图像信号，并响应于第二图像信号控制显示组件（40）显示目标图像。音频播放组件（30）用于接收并播放目标音频。由于在显示组件（40）处于开启状态之前，音频播放组件（30）并不会接收到音频，由此避免出现显示组件（40）还未开启，而音频播放组件（30）已经播放音频的情况，确保了播放的音频和显示的图像的同步。

Description

激光投影设备及其开机方法
相关申请的交叉引用
本申请要求在2020年6月17日提交中国专利局、申请号为202010555370.7，发明名称为激光投影设备及其开机方法的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及投影显示领域，特别涉及一种激光投影设备及其开机方法。
背景技术
激光投影设备包括电源、主控电路、显示驱动电路、显示组件和音频播放组件。主控电路在接收待机指令后，会控制电源停止为显示驱动电路供电。同时主控电路可以保存当前显示的图像和与该图像对应的音频。之后，主控电路在接收到开机指令后，会控制电源为显示驱动电路供电，以使显示驱动电路在启动后开启显示组件。同时主控电路可以继续将保存的图像发送至显示驱动电路，并将与该图像对应的音频发送至音频播放组件，从而继续播放在接收到待机指令时所播放的图像和声音。
但是，由于在待机的过程中，电源并未停止为主控电路供电。因此主控电路在接收到开机指令后，可以直接将保存的音频发送至音频播放组件，以使音频播放组件播放该音频。而显示驱动电路在启动后才会开启显示组件，由此会出现显示组件还未启动的情况下，音频播放组件已经开始播放图像对应的音频，从而使得播放的音频与显示的图像不同步。
发明内容
本公开实施例一方面提供了一种激光投影设备，所述激光投影设备包括电源、显示驱动电路，音频播放组件和显示组件；
所述电源用于在所述显示组件显示目标图像，且所述音频播放组件播放目标音频的过程中，接收下电指令，并响应于所述下电指令，停止为所述显示驱动电路供电，以及接收上电指令，并响应于所述上电指令，为所述显示驱动电路供电，所述下电指令是响应于待机指令发送至所述电源的，所述上电指令是响应于开机指令发送至所述电源的；
所述显示驱动电路用于接收第一图像信号，并响应于所述第一图像信号控制所述显示组件显示备选图像，以及接收第二图像信号，并响应于所述第二图像信号控制所述显示组件显示所述目标图像，所述第一图像信号是响应于所述待机指令发送至所述显示驱动电路 的，以及响应于所述开机指令发送至所述显示驱动电路的，所述第二图像信号是在检测到所述显示组件处于开启状态后发送至所述显示驱动电路的；
所述音频播放组件用于接收并播放所述目标音频，所述目标音频是在检测到所述显示组件处于开启状态后发送至所述音频播放组件的。
另一方面，提供了一种激光投影设备的开机方法，应用于激光投影设备，所述激光投影设备包括电源，显示驱动电路，音频播放组件和显示组件；所述方法包括：
在所述显示组件显示目标图像，且所述音频播放组件播放目标音频的过程中，所述电源接收下电指令，并响应于所述下电指令，停止为所述显示驱动电路供电，所述下电指令是响应于待机指令发送至向所述电源的；
所述显示驱动电路接收第一图像信号，并响应于所述第一图像信号控制所述显示组件显示备选图像；
所述电源接收上电指令，并响应于所述上电指令，为所述显示驱动电路供电，所述上电指令是响应于开机指令发送至所述电源的；
所述显示驱动电路接收所述第一图像信号，并响应于所述第一图像信号控制所述显示组件显示备选图像；
所述显示驱动电路接收第二图像信号并响应于所述第二图像信号控制所述显示组件显示所述目标图像，所述音频播放组件接收并播放所述目标音频，所述第二图像信号是在检测到所述显示组件处于开启状态后发送至所述显示驱动电路的，所述目标音频是在检测到所述显示组件处于开启状态后发送至所述音频播放组件的。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开实施例提供的一种激光投影设备的结构示意图；
图2是本公开实施例提供的另一种激光投影设备的结构示意图；
图3是本公开实施例提供的一种激光投影设备的开机方法的流程图；
图4是本公开实施例提供的一种激光投影设备的开机方法的流程图；
图5是本公开实施例提供的又一种激光投影设备的结构示意图；
图6是本公开实施例提供的一种激光投影设备进入待机状态的流程图；
图7是本公开实施例提供的一种激光投影设备开机的流程图；
图8是本公开实施例提供的一种在开机过程显示驱动电路驱动显示组件开启的流程图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
图1是本公开实施例提供的一种激光投影设备的结构示意图，该激光投影设备可以包括主机100和投影屏幕200。在一种具体实施中，该激光投影设备可以为超短焦激光投影设备。
图2是本公开实施例提供的一种激光投影设备的结构示意图。如图2所示，该激光投影设备的主机100可以包括电源10，显示驱动电路20，音频播放组件30和显示组件40。
其中，该电源10分别与显示驱动电路20、音频播放组件30和显示组件40连接，该显示驱动电路20还与显示组件40连接。
图3是本公开实施例提供的一种激光投影设备的开机方法的流程图。该开机方法可以应用于图2所示的激光投影设备中。参考图2，该激光投影设备可以包括电源10、显示驱动电路20，音频播放组件30和显示组件40。如图3所示，该方法可以包括：
步骤301，在显示组件显示目标图像，且音频播放组件播放目标音频的过程中，电源接收下电指令，并响应于下电指令，停止为显示驱动电路供电。
其中，该下电指令是响应于待机指令发送至电源的。
步骤302，显示驱动电路接收第一图像信号，并响应于第一图像信号控制显示组件显示备选图像。
该第一图像信号包括备选图像的图像数据。
步骤303，电源接收上电指令，并响应于上电指令，为显示驱动电路供电。
该上电指令是响应于开机指令发送至该电源的。
步骤304，显示驱动电路接收第一图像信号，并响应于第一图像信号控制显示组件显示备选图像。
在本公开实施例中，由于在待机后，显示驱动电路接收到了第一图像信号，因此使得该第一图像信号指示的备选图像成为待机前显示的最后一帧图像，由此保证开机后，显示驱动电路可以先接收到第一图像信号，并响应于该第一图像信号控制显示组件显示备选图像。
步骤305，显示驱动电路接收第二图像信号并响应于第二图像信号控制显示组件显示目标图像，音频播放组件接收并播放目标音频。
该第二图像信号是在检测到显示组件处于开启状态后发送至显示驱动电路的，该第二 图像信号包括目标图像的图像数据。该目标音频是在检测到显示组件处于开启状态后发送至音频播放组件的。
综上所述，本公开实施例提供了一种激光投影设备的开机方法，该开机方法中在显示组件显示目标图像，且音频播放组件播放目标音频的过程中，显示驱动电路可以响应于接收到的第一图像信号控制显示组件显示备选图像。使得该第一图像信号指示的备选图像成为待机前显示的最后一帧图像，由此保证在开机后，显示驱动电路可以再次接收到第一图像信号，并响应于该第一图像信号控制显示组件显示备选图像。之后在显示组件处于开启状态之后，显示驱动电路可以接收到第二图像信号并响应于该第二图像信号控制显示组件显示目标图像，音频播放组件接收并播放目标音频。由于在显示组件处于开启状态之前，音频播放组件并不会接收到音频，由此避免出现显示组件还未处于开启状态，而音频播放组件已经播放音频的情况，确保了播放的音频和显示的图像的同步。
图4是本公开实施例提供的一种激光投影设备的开机方法的流程图。该开机方法可以应用于图2所示的激光投影设备中。参考图2，该激光投影设备可以包括电源10、显示驱动电路20，音频播放组件30和显示组件40。如图4所示，该方法可以包括：
步骤401，在显示组件显示目标图像，且音频播放组件播放目标音频的过程中，显示驱动电路接收关闭指令，并响应于关闭指令关闭显示组件。
该关闭指令是响应于待机指令发送至显示驱动电路20的。
参考图2，该激光投影设备还可以包括主控电路50，该关闭指令可以是主控电路50响应于待机指令发送至显示驱动电路20的。在显示组件40显示目标图像，且音频播放组件30播放目标音频的过程中，若主控电路50接收到待机指令，则可以响应于该待机指令，向显示驱动电路20发送关闭指令。该显示驱动电路20在接收到该关闭指令后，可以响应于该关闭指令，关闭显示组件40。
在一种具体实施中，参考图5，用户可以通过遥控器00向主控电路50发送待机指令，主控电路50在接收到该待机指令后，可以响应于该待机指令，向显示驱动电路20发送关闭指令。
或者，参考图5，激光投影设备上设置有触摸按钮01。该触摸按钮01可以包括待机按钮。主控电路50在接收到用户针对该待机按钮的选择操作后，生成待机指令，并可以响应于该待机指令，向显示驱动电路20发送关闭指令。
参考图5，该激光投影设备还可以包括显示板02和光阀板03，该显示驱动电路20可以包括显示驱动子电路21、激光器驱动子电路22和光阀驱动子电路23。该显示组件40 可以包括激光器41和光阀42。
其中，该显示驱动子电路21和光阀驱动子电路23均设置在显示板02上。该光阀42设置在光阀板03上，该光阀42可以为数字微镜器件(digital micro-mirror device，DMD)。该显示驱动子电路21分别与主控电路50，激光器驱动子电路22和光阀驱动子电路23连接。
在本公开实施例中，激光投影设备还可以包括风扇，该风扇与显示驱动子电路21连接。图6是本公开实施例提供一种激光投影设备进入待机状态的流程图。参考图6，该过程可以包括：
步骤4010，主控电路接收待机指令并响应于待机指令，向显示驱动子电路发送关闭指令。
步骤4011，显示驱动子电路响应于关闭指令，将关闭指令发送至激光器驱动子电路和向光阀驱动子电路，并关闭风扇。
步骤4012，激光器驱动子电路响应于关闭指令关闭激光器。
在一种具体实施中，激光器驱动子电路22可以响应于该关闭指令，停止为激光器41提供驱动电流，由此实现关闭激光器41。
步骤4013，光阀驱动子电路响应于关闭指令关闭光阀。
光阀驱动子电路23可以响应于该关闭指令，停止为光阀42提供驱动电流，由此实现关闭光阀42。
在一种具体实施中，主控电路50可以通过集成电路总线(inter-intergrated circuit，I2C)与显示驱动子电路21连接，该主控电路50可以通过该I2C向显示驱动子电路21发送关闭指令。该显示驱动子电路21与光阀驱动子电路23也可以通过I2C连接。则显示驱动子电路21可以通过该I2C将该关闭指令发送至光阀驱动子电路23。
步骤402，电源接收下电指令，并响应于下电指令，停止为显示驱动电路供电。
在本公开实施例中，主控电路50在向显示驱动电路20发送关闭指令之后，还可以向电源10发送下电指令，该电源10可以接收该下电指令，并响应于该下电指令，停止为显示驱动电路20供电。
参考图5，该电源10与显示驱动子电路21和光阀驱动子电路23连接，该电源10可以响应于下电指令，停止为显示驱动子电路21和光阀驱动子电路23供电。在一种具体实施中，该电源10与显示板02上的每个电路和器件连接。
步骤403，显示驱动电路接收第一图像信号，并响应于第一图像信号控制显示组件显示备选图像。
在本公开实施例中，主控电路10在向显示驱动电路30发送关闭指令之后，还可以向显示驱动电路20发送第一图像信号，显示驱动电路20可以接收该第一图像信号，并响应于该第一图像信号控制显示组件40显示备选图像。
参考图5，该主控电路50可以响应于待机指令，向光阀驱动子电路23发送第一图像信号，该光阀驱动子电路23可以接收第一图像信号包括的备选图像的图像数据，控制光阀42翻转，该光阀42将照射至其表面的光束反射至投影屏幕，从而实现显示备选图像。
在一种具体实施中，参考图5，该显示驱动电路20还可以包括图像处理子电路24，该图像处理子电路24分别与主控电路50和光阀驱动子电路23连接，该图像处理子电路24通过连接器04与主控电路50连接，该连接器04可以为插座。主控电路50可以响应于待机指令，向图像处理子电路24发送第一图像信号，该图像处理子电路24对该第一图像信号包括的备选图像的图像数据进行解码，并将解码后的图像数据发送至光阀驱动子电路23。该光阀驱动子电路23可以根据该解码后的图像数据，控制光阀42翻转，该光阀42将照射至其表面的光束反射至投影屏幕，从而实现显示备选图像。
但是，由于在步骤401中，显示驱动电路20已经关闭了显示组件40，即激光器驱动子电路22已经关闭了激光器41，且光阀驱动子电路23已经关闭了光阀42。因此，在步骤403中，即便是显示驱动电路20接收到第一图像信号，实质上显示组件40也无法显示出备选图像。
在本公开实施例中，主控电路50在接收到待机指令后，将第一图像信号发送至显示驱动电路20，由此使得备选图像的播放优先级高于目标图像和目标音频的播放优先级。
在待机过程中，激光投影设备进入了挂起到内存(suspend to ram，STR)状态。此时备选图像、目标图像和目标音频均保存至内存中。
步骤404，电源接收上电指令，并响应于上电指令，为显示驱动电路供电。
其中，该上电指令是响应于开机指令发送至电源的。在一种具体实施中，该上电指令是主控电路50可以响应于开机指令，向电源10发送上电指令，该电源10可以接收该上电指令，并可以响应于该上电指令，为显示驱动电路20供电。
在一种具体实施中，参考图5，用户可以通过遥控器00向主控电路50发送开机指令，主控电路50在接收到该开机指令后，可以响应于该开机指令，向电源10发送上电指令。
或者，参考图5，该触摸按钮01可以包括开机按钮，主控电路50在接收到用户针对该开机按钮的选择操作后，生成开机指令，并可以响应于该开机指令，向电源10发送上电指令。
在一种具体实施中，参考图5，电源10可以响应于上电指令为显示驱动子电路21和 光阀驱动子电路23供电。
步骤405，显示驱动电路接收第一图像信号，并响应于第一图像信号控制显示组件显示备选图像。
在本公开实施例中，主控电路50响应于开机指令，在向电源10发送上电指令的同时，还可以向显示驱动电路20发送第一图像信号，该显示驱动电路20可以响应于该第一图像信号，控制显示组件40显示备选图像。
需要说明的是，由于在待机过程中，电源10并未停止为主控电路50供电，且由于在接收到待机指令后，主控电路50将第一图像信号发送至显示驱动电路20，以使得备选图像的播放优先级高于目标图像和目标音频的播放优先级。因此主控电路50在接收到开机指令后，可以直接向显示驱动电路20发送第一图像信号。而由于在待机过程中电源10停止为显示驱动电路20供电，因此在开机后，在电源10为显示驱动电路20供电，且显示驱动电路20启动完成后，显示驱动电路20才能够启动显示组件40。因此在显示驱动电路20未启动显示组件40之前，即便是主控电路50将第一图像信号发送至显示驱动子电路21，实质上显示组件40也无法显示出备选图像。
步骤406，主控电路检测显示组件是否处于开启状态。
主控电路50在向显示驱动电路20发送第一图像信号之后，还可以检测显示组件40是否处于开启状态，若检测到显示组件40处于开启状态，则主控电路50可以确定显示组件40能够显示出图像，执行步骤407。若检测到显示组件40未处于开启状态，则主控电路50可以确定显示组件40无法显示出图像，因此可以继续执行步骤406。
作为本公开一种在一种具体实施中实现方式，主控电路50可以从显示驱动电路20中获取指示值。若该指示值为目标值，则可以确定显示组件40处于开启状态。其中，该指示值用于指示激光器41是否处于开启状态。示例的，该目标值可以为1。
在一种具体实施中，参考图5，主控电路50可以从显示驱动子电路21的寄存器中获取指示值。
作为本公开另一种在一种具体实施中实现方式，显示驱动电路20可以在开启激光器41后，向主控电路50发送确认指令。主控电路50响应于该确认指令，确定显示组件40处于开启状态。
在一种具体实施中，参考图5，电源10为显示驱动子电路21和光阀驱动子电路23供电后，该显示驱动子电路21和光阀驱动子电路23开始启动，即显示驱动子电路21和光阀驱动子电路23开始自检。该显示驱动子电路21在启动完成后，可以向激光器驱动子电路22发送启动指令，该激光器驱动子电路22可以响应于该启动指令，开启激光器41。显 示驱动子电路21在向激光器驱动子电路22发送启动指令后，还可以向主控电路50发送确认指令。同时，光阀驱动子电路23在启动完成后，开启光阀42。
步骤407，主控电路向显示驱动电路发送第二图像信号，并向音频播放组件发送目标音频。
主控电路50在确定显示组件40处于开启状态之后，可以向显示驱动电路20发送第二图像信号，并向音频播放组件30发送目标音频，该显示驱动电路20可以在该第二图像信号的控制下，控制显示组件40显示目标图像。由此显示组件40继续显示目标图像，并音频播放组件30继续播放目标音频。
参考图5，该音频播放组件30包括功放组件31和播放器32，该播放器32可以为扬声器。主控电路50可以将目标音频发送至功放组件31，该功放组件31可以控制播放器播放该目标音频。
图7是本公开实施例提供的一种激光投影设备开机的流程图。参考图7，该激光投影设备的开机过程可以包括：
步骤701，主控电路接收到开机指令，并响应于该开机指令向电源发送上电指令。
步骤702，电源响应于该上电指令，为显示驱动电路供电。
步骤703，主控电路向显示驱动电路发送第一图像信号。
步骤704，显示驱动电路响应于该第一图像信号控制显示组件显示备选图像。
步骤705，主控电路在检测到显示组件处于开启状态后，向显示驱动电路发送第二图像信号，并向音频播放组件发送目标音频。
图8是本公开实施例提供的一种在开机过程显示驱动电路驱动显示组件开启的流程图。参考图8，该过程可以包括：
步骤801，电源分别为显示驱动子电路和光阀驱动子电路供电。
步骤802，光阀驱动子电路启动完成后开启光阀，并根据接收到的第一图像信号控制光阀显示备选图像。
步骤803，显示驱动子电路在启动完成后开启风扇，并控制激光器驱动子电路开启激光器。
步骤804，主控电路在检测到激光器开启后，向光阀驱动子电路发送第二图像信号，并向音频播放组件发送目标音频。
步骤805，光阀驱动子电路根据第二图像信号控制光阀显示目标图像，同时音频播放组件播放目标音频。
在本公开实施例中，该备选图像可以为黑色图像，则即便是激光器41已经处于开启 状态，但主控电路50还未检测到显示组件40处于开启状态时，显示组件40显示出该备选图像，用户也只能看到黑色的图像。由此在主控电路50检测到显示组件40处于开启状态时，向显示驱动电路20发送第二图像信号，并向音频播放组件30发送目标音频后，显示组件40显示出该目标图像，此时用户可以看到在待机之前显示组件40所显示的图像，确保了在待机前和开机后看到的是相同的图像，从而确保了用户观看的连贯性。
在一种具体实施中，该备选图像还可以为其他颜色的图像，例如该备选图像可以为白色图像或者彩色图像。
在本公开实施例中，在步骤401中，在显示组件40显示目标图像，且音频播放组件30播放目标音频的过程中，实际上主控电路50运行了视频应用程序。在步骤403中，主控电路50在向显示驱动电路20发送第一图像信号的过程中，实际上运行了图像应用程序，以通过该图像应用程序打开备选图像。由此使得该图像应用程序的运行优先级高于该视频应用程序的运行优先级。则主控电路50在接收到开机指令后，由于图像应用程序的运行优先级高于视频应用程序的运行优先级，因此主控电路50可以直接运行图像应用程序，由此将第一图像信号发送至显示驱动电路20。
参考图5，该激光投影设备还可以包括主板05、第一存储器61、第二存储器62和排线06。该显示驱动电路20可以包括两个光阀驱动子电路23。
其中，主控电路50和功放组件31均设置在该主板05上。该每个光阀驱动子电路23可以通过排线06与光阀42连接。该图像处理子电路24与第一存储器61连接，该每个光阀驱动子电路23与第二存储器62连接。
主控电路50在将第一图像信号发送至图像处理子电路24后，图像处理子电路24可以将解码后的图像数据划分为两个子图像数据，并将该每个子图像数据分别发送至对应的光阀驱动子电路23，每个光阀驱动子电路23可以根据对应的子图像数据控制光阀42翻转。
在本公开实施例中，在待机过程中，电源10停止为显示板上的所有电路和器件供电，即电源10也停止为图像处理子电路24供电。则电源10在接收到上电指令，为图像处理子电路24和每个光阀驱动子电路23供电之后，图像处理子电路24可以从第一存储器61中读取程序并进行初始化，以完成启动。每个光阀驱动子电路23可以从与其连接的第二存储器62中读取程序进行初始化，以完成启动。
在一种具体实施中，参考图5，该电源10可以为电源板，该激光器驱动子电路22可以设置在该电源板上。
在一种具体实施中，显示驱动子电路21在接收到主控电路50发送的关闭指令后，还可以关闭风扇。
需要说明的是，本公开实施例提供的激光投影设备的开机方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行删除。例如，步骤402和步骤403可以同时执行。任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本公开的保护范围之内，因此不再赘述。
综上所述，本公开实施例提供了一种激光投影设备的开机方法，该开机方法中在显示组件显示目标图像，且音频播放组件播放目标音频的过程中，显示驱动电路可以根据接收到的第一图像信号控制显示组件显示备选图像。使得该第一图像信号指示的备选图像成为待机前显示的最后一帧图像，由此保证在开机后，显示驱动电路可以再次接收到第一图像信号，并响应于该第一图像信号控制显示组件显示备选图像。之后在显示组件处于开启状态之后，显示驱动电路可以接收到第二图像信号并响应于该第二图像信号控制显示组件显示目标图像，音频播放组件接收并播放目标音频。由于在显示组件处于开启状态之前，音频播放组件并不会接收到音频，由此避免出现显示组件还未处于开启状态，而音频播放组件已经播放音频的情况，确保了播放的音频和显示的图像的同步。
参考图1和图5，本公开实施例提供了一种激光投影设备，激光投影设备可以包括电源10、显示驱动电路20，音频播放组件30和显示组件40。
电源10用于在显示组件40显示目标图像，且音频播放组件30播放目标音频的过程中，接收下电指令，并响应于下电指令，停止为显示驱动电路20供电。以及接收上电指令，并响应于上电指令，为显示驱动电路20供电，下电指令是响应于待机指令发送至向电源10的，上电指令是响应于开机指令发送至电源10的。
显示驱动电路20用于接收第一图像信号，并响应于第一图像信号控制显示组件40显示备选图像。以及接收第二图像信号，并响应于第二图像信号控制显示组件40显示目标图像，该第一图像信号是响应于待机指令发送至显示驱动电路20的，以及响应于开机指令发送至显示驱动电路20的。该第二图像信号是在检测到显示组件40处于开启状态后发送至显示驱动电路20的。
音频播放组件30用于接收并播放目标音频，该目标音频是在检测到显示组件40处于开启状态后发送至音频播放组件30的。
综上所述，本公开实施例提供了一种激光投影设备，该激光投影设备中的主控电路在显示组件显示目标图像，且音频播放组件播放目标音频的过程中，显示驱动电路可以根据接收到的第一图像信号控制显示组件显示备选图像。使得该第一图像信号指示的备选图像成为待机前显示的最后一帧图像，由此保证在开机后，显示驱动电路可以再次接收到第一 图像信号，并响应于该第一图像信号控制显示组件显示备选图像。之后在显示组件处于开启状态之后，显示驱动电路可以接收到第二图像信号并响应于该第二图像信号控制显示组件显示目标图像，音频播放组件接收并播放目标音频。由于在显示组件处于开启状态之前，音频播放组件并不会接收到音频，由此避免出现显示组件还未处于开启状态，而音频播放组件已经播放音频的情况，确保了播放的音频和显示的图像的同步。
在一种具体实施中，激光投影设备还包括主控电路50，显示组件40包括激光器41。主控电路50用于：
从显示驱动电路20获取指示值，指示值用于指示显示组件40是否处于开启状态。
若指示值为目标值，确定显示组件40处于开启状态。
向显示驱动电路20发送第二图像信号，并向音频播放组件30发送目标音频。
在一种具体实施中，激光投影设备还包括主控电路50，显示组件40包括激光器41。
显示驱动电路20，还用于在开启激光器41之后向主控电路50发送确认指令。
主控电路50，用于：
响应于确认指令，确定显示组件40处于开启状态。
向显示驱动电路20发送第二图像信号，并向音频播放组件30发送目标音频。
在一种具体实施中，备选图像为黑色图像。
在一种具体实施中，显示驱动电路20，还用于接收关闭指令，并响应于关闭指令关闭显示组件40，关闭指令是响应于待机指令发送至向显示驱动电路20的。
综上所述，本公开实施例提供了一种激光投影设备，该激光投影设备中的主控电路在显示组件显示目标图像，且音频播放组件播放目标音频的过程中，显示驱动电路可以根据接收到的第一图像信号控制显示组件显示备选图像。使得该第一图像信号指示的备选图像成为待机前显示的最后一帧图像，由此保证在开机后，显示驱动电路可以再次接收到第一图像信号，并响应于该第一图像信号控制显示组件显示备选图像。之后在显示组件处于开启状态之后，显示驱动电路可以接收到第二图像信号并响应于该第二图像信号控制显示组件显示目标图像，音频播放组件接收并播放目标音频。由于在显示组件处于开启状态之前，音频播放组件并不会接收到音频，由此避免出现显示组件还未处于开启状态，而音频播放组件已经播放音频的情况，确保了播放的音频和显示的图像的同步。
以上所述仅为本公开的可选实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (10)

  1. 一种激光投影设备，其特征在于，所述激光投影设备包括电源、显示驱动电路，音频播放组件和显示组件；
    所述电源用于在所述显示组件显示目标图像，且所述音频播放组件播放目标音频的过程中，接收下电指令，并响应于所述下电指令，停止为所述显示驱动电路供电，以及接收上电指令，并响应于所述上电指令，为所述显示驱动电路供电，所述下电指令是响应于待机指令发送至向所述电源的，所述上电指令是响应于开机指令发送至所述电源的；
    所述显示驱动电路用于接收第一图像信号，并响应于所述第一图像信号控制所述显示组件显示备选图像，以及接收第二图像信号，并响应于所述第二图像信号控制所述显示组件显示所述目标图像，所述第一图像信号是响应于所述待机指令发送至所述显示驱动电路的，以及响应于所述开机指令发送至所述显示驱动电路的，所述第二图像信号是在检测到所述显示组件处于开启状态后发送至所述显示驱动电路的；
    所述音频播放组件用于接收并播放所述目标音频，所述目标音频是在检测到所述显示组件处于开启状态后发送至所述音频播放组件的。
  2. 根据权利要求1所述的激光投影设备，其特征在于，所述激光投影设备还包括主控电路，所述显示组件包括激光器；所述主控电路用于：
    从所述显示驱动电路获取指示值，所述指示值用于指示所述显示组件是否处于开启状态；若所述指示值为目标值，确定所述显示组件处于开启状态；
    向所述显示驱动电路发送所述第二图像信号，并向所述音频播放组件发送所述目标音频。
  3. 根据权利要求1所述的激光投影设备，其特征在于，所述激光投影设备还包括主控电路，所述显示组件包括激光器；
    所述显示驱动电路，还用于在开启所述激光器之后向所述主控电路发送确认指令；
    所述主控电路，用于：
    响应于所述确认指令，确定所述显示组件处于开启状态；
    向所述显示驱动电路发送所述第二图像信号，并向所述音频播放组件发送所述目标音频。
  4. 根据权利要求1所述的激光投影设备，其特征在于，所述备选图像为黑色图像。
  5. 根据权利要求1至4任一所述的激光投影设备，其特征在于，所述显示驱动电路，还用于接收关闭指令，并响应于所述关闭指令关闭所述显示组件，所述关闭指令是响应于所述待机指令发送至向所述显示驱动电路的。
  6. 一种激光投影设备的开机方法，其特征在于，应用于激光投影设备，所述激光投影设备包括电源，显示驱动电路，音频播放组件和显示组件；所述方法包括：
    在所述显示组件显示目标图像，且所述音频播放组件播放目标音频的过程中，所述电源接收下电指令，并响应于所述下电指令，停止为所述显示驱动电路供电，所述下电指令是响应于待机指令发送至向所述电源的；
    所述显示驱动电路接收第一图像信号，并响应于所述第一图像信号控制所述显示组件显示备选图像；
    所述电源接收上电指令，并响应于所述上电指令，为所述显示驱动电路供电，所述上电指令是响应于开机指令发送至所述电源的；
    所述显示驱动电路接收所述第一图像信号，并响应于所述第一图像信号控制所述显示组件显示备选图像；
    所述显示驱动电路接收第二图像信号并响应于所述第二图像信号控制所述显示组件显示所述目标图像，所述音频播放组件接收并播放所述目标音频，所述第二图像信号是在检测到所述显示组件处于开启状态后发送至所述显示驱动电路的，所述目标音频是在检测到所述显示组件处于开启状态后发送至所述音频播放组件的。
  7. 根据权利要求6所述的方法，其特征在于，所述备选图像为黑色图像。
  8. 根据权利要求6所述的方法，其特征在于，所述激光投影设备还包括主控电路，所述显示组件包括激光器；所述方法还包括：
    所述主控电路从所述显示驱动电路中获取指示值，所述指示值用于指示所述激光器是否处于开启状态；
    若所述指示值为目标值，所述主控电路确定所述显示组件处于开启状态；
    所述主控电路向所述显示驱动电路发送所述第二图像信号，并向所述音频播放组件发送所述目标音频。
  9. 根据权利要求6所述的方法，其特征在于，所述激光投影设备还包括主控电路，所述显示组件包括激光器；所述方法还包括：
    所述显示驱动电路在开启所述激光器之后向所述主控电路发送确认指令；
    所述主控电路响应于所述确认指令，确定所述显示组件处于开启状态；
    所述主控电路向所述显示驱动电路发送所述第二图像信号，并向所述音频播放组件发送所述目标音频。
  10. 根据权利要求6至9任一所述的方法，其特征在于，所述方法还包括：
    所述显示驱动电路接收关闭指令，并响应于所述关闭指令关闭所述显示组件，所述关闭指令是响应于所述待机指令发送至所述显示驱动电路的。
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