WO2022100599A1 - 投影设备及其控制方法 - Google Patents

投影设备及其控制方法 Download PDF

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Publication number
WO2022100599A1
WO2022100599A1 PCT/CN2021/129719 CN2021129719W WO2022100599A1 WO 2022100599 A1 WO2022100599 A1 WO 2022100599A1 CN 2021129719 W CN2021129719 W CN 2021129719W WO 2022100599 A1 WO2022100599 A1 WO 2022100599A1
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WO
WIPO (PCT)
Prior art keywords
control circuit
display panel
light valve
switch
control
Prior art date
Application number
PCT/CN2021/129719
Other languages
English (en)
French (fr)
Inventor
吴超
赵一石
陈许
Original Assignee
青岛海信激光显示股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202011247566.6A external-priority patent/CN112383761B/zh
Priority claimed from CN202011248205.3A external-priority patent/CN112379762A/zh
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 CN202180075749.0A priority Critical patent/CN116490837A/zh
Publication of WO2022100599A1 publication Critical patent/WO2022100599A1/zh

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    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/24—Resetting 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]

Definitions

  • the present disclosure relates to the field of projection display, and in particular, to a projection device and a control method thereof.
  • the projection device may include a mainboard and a power strip to which the mainboard is connected.
  • the power strip can supply power to the motherboard and other components in the projection device.
  • the main board can control the power board to stop supplying power to some devices in the main board and other devices in the projection device in response to the shutdown command, thereby realizing the shutdown of the projection device, and then the main board can respond to the power-on command to control the power board to be the projection device. All devices in the device are powered up, thereby enabling the projection device to be restarted.
  • the motherboard when the motherboard crashes, it cannot detect or respond to a shutdown command. At this time, the user can only unplug the power supply of the projection device, and after replugging the power supply of the projection device, restart the projection device, so as to restart the motherboard.
  • the present application discloses a projection device, which adopts the following technical solutions:
  • a projection device comprising: a main board, a display panel, a light valve, a light source, a projection lens, a control circuit, and a light valve power supply circuit connected to the light valve;
  • the main board is connected to the display board, and the main board is used for sending image signals to the display board;
  • the display panel is also connected with the light valve, and the display panel is used for generating a light valve control signal according to the image signal, and controlling the light valve to turn over according to the light valve control signal, so as to emit the light source
  • the light beam is transmitted to the projection lens; the projection lens is used to project the light beam into an image;
  • the control circuit is respectively connected with the main board, the display board and the light valve power supply circuit, and the control circuit is used for: if a forced shutdown operation is detected, respectively detect whether the main board and the display board are in dead state;
  • the light valve is controlled to be reset, and after the light valve is controlled to be reset, the light valve power supply circuit is controlled to stop powering the light valve.
  • the light valve power supply circuit is controlled to stop supplying power to the light valve.
  • a projection device including: a main board, a display panel, a light valve, a light source, a projection lens and a control circuit;
  • the main board is connected to the display board, and the main board is used for sending image signals to the display board;
  • the display panel is also connected with the light valve, and the display panel is used for generating a light valve control signal according to the image signal, and controlling the light valve to turn over according to the light valve control signal, so as to emit the light source
  • the light beam is transmitted to the projection lens;
  • the projection lens is used to project the light beam into an image
  • the control circuit is respectively connected with the main board and the display panel, and the control circuit is used for:
  • the mainboard is controlled to be restarted, and the running state of the display panel is not adjusted.
  • the present application also discloses a control method of a projection device, which is applied to the projection device, and the projection device includes: a control circuit, a main board, a display panel, a light valve and a light valve power supply circuit, and the control circuit is respectively connected with the The main board, the display panel and the light valve power supply circuit are connected, and the light valve power supply circuit is also connected with the light valve; the method includes:
  • control circuit If the control circuit detects a forced shutdown operation, it sends detection signals to the main board and the display panel respectively;
  • control circuit If the control circuit detects that the response signal sent by the main board is not received within the first communication duration, and the response signal sent by the display panel is received within the second communication duration, the control circuit controls the light valve to reset, and after controlling the light valve to reset, controlling the light valve power supply circuit to stop supplying power to the light valve;
  • control circuit If the control circuit detects that the response signal sent by the display panel is not received within the second communication period, the control circuit controls the light valve power supply circuit to stop supplying power to the light valve.
  • the projection device includes: a control circuit, a main board and a display board, and the control circuit is respectively connected with the main board and the display board;
  • the methods described include:
  • control circuit If the control circuit detects a forced shutdown operation, it sends detection signals to the main board and the display panel respectively;
  • control circuit If the control circuit detects that the response signal sent by the main board is not received within the first communication time period, and the response signal sent by the display panel is received within the second communication time period, the control circuit controls the main board to restart, and The operating state of the display panel is not adjusted.
  • FIG. 1 is a schematic structural diagram of a projection device provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of still another projection device provided by an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure.
  • FIG. 7-1 is a schematic structural diagram of still another projection device provided by an embodiment of the present disclosure.
  • FIG. 7-2 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a projection device provided by the related art.
  • FIG. 9 is a schematic structural diagram of another projection device provided by an embodiment of the present disclosure.
  • FIG. 10 is a flowchart of a control method of a projection device provided by an embodiment of the present disclosure
  • FIG. 11 is a flowchart of another method for controlling a projection device provided by an embodiment of the present disclosure.
  • FIG. 12 is a flowchart of another method for controlling a projection device provided by an embodiment of the present disclosure.
  • FIG. 13 is a flowchart of still another method for controlling a projection device provided by an embodiment of the present disclosure.
  • FIG. 14 is a flowchart of still another method for controlling a projection device provided by an embodiment of the present disclosure.
  • FIG. 15 is a flowchart of another method for controlling a projection device provided by an embodiment of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a projection device provided by an embodiment of the present disclosure.
  • the projection device may include: a main board 10 , a display panel 20 , a light valve 30 , a light source 40 , a projection lens 50 , a control circuit 60 and a light valve power supply circuit 70 connected to the light valve 30 .
  • the light valve 30 may include a plurality of digital micro-mirror devices (DMD) arranged in an array.
  • the light source 40 can be a laser, such as a blue laser, a red laser or a green laser.
  • the light source 40 is used to emit a laser beam.
  • the control circuit 60 may be a microcontroller unit (micro controller unit, MCU).
  • the mainboard 10 is connected to the display panel 20 , and the mainboard 10 is used for sending image signals to the display panel 20 .
  • control circuit 60 and the display panel 20 may be connected through an integrated circuit (inter integrated circuit, I2C), and the mainboard 10 may send image signals to the display panel 20 through the I2C.
  • I2C integrated circuit
  • the display panel 20 is also connected to the light valve 30, the display panel 20 is used for generating a light valve control signal according to the image signal, and controlling the light valve 30 to turn over according to the light valve control signal, so as to transmit the light beam emitted by the light source 40 to the projection lens 50 .
  • the display panel 20 may generate a light valve control signal according to the pixel value of the pixel in the image signal, and control the light valve 30 to turn over according to the light valve control signal.
  • the inverted light valve 30 can transmit the light beam irradiated by the light source 40 to its surface to the projection lens 50 .
  • the projection lens 50 is used to project the light beam into an image.
  • the projection lens 50 is used to project the light beam to the projection screen, thereby realizing the display of the image on the projection screen.
  • the control circuit 60 is respectively connected to the main board 10, the display board 20 and the light valve power supply circuit 70.
  • the control circuit 60 is used to detect whether the main board 10 and the display board 20 are in a dead state respectively if a forced shutdown operation is detected. 10 is in a dead state, and the display panel 20 is not in a dead state, the control light valve 30 is reset, and after the control light valve 30 is reset, the light valve power supply circuit 70 is controlled to stop supplying power to the light valve 30 . If it is detected that the display panel 20 is in a dead state, the light valve power supply circuit 70 is controlled to stop supplying power to the light valve 30 , so as to completely discharge the electric charges in the light valve 30 .
  • the stored charge in the light valve 30 drives the light valve 30 to deflect at a large angle, that is, the plurality of digital micromirror devices included in the light valve 30 will be deflected at a large angle, thereby causing any adjacent two Several digital micromirror devices collide, causing damage to some of the digital micromirror devices.
  • the main board 10 may include a system-on-chip (system of chip, SoC), and a plurality of application programs may be installed in the SoC.
  • SoC system of chip
  • the host 10 may freeze.
  • the digital light processing (DLP) chip included in the display panel 20 may also crash during the running process, thereby causing the display panel 20 to crash.
  • DLP digital light processing
  • a target button 00 may be provided on a remote controller for controlling the projection device, and/or a target button 00 may be provided on a housing of the projection device.
  • the forced shutdown operation may be a pressing operation for the target button 00 on the projection device, or the forced shutdown operation may be a pressing operation for the target button 00 on the remote controller.
  • the target button 00 may be a shutdown button, or the target button 00 may be a plurality of buttons, and the forced shutdown operation may be a combined pressing operation for the plurality of buttons.
  • the control circuit 60 can detect whether the duration of the pressing operation is longer than the target duration. If the duration of the pressing operation is detected to be less than or equal to the target duration, the control circuit 60 may determine that a shutdown operation is detected, and at this time, the control circuit 60 may control the mainboard 10 to perform a normal shutdown process, that is, the control circuit 60 may control the mainboard 10 Turn off some devices in the main board 10 and other devices in the projection device.
  • the control circuit 60 may be provided with a first general purpose input/output (GPIO) GPIO_1 port. If the signal detected by the control circuit 60 at the first GPIO_1 port is an invalid level, the control circuit 60 may determine that a pressing operation of the target button 00 by the user is detected. If the signal detected by the control circuit 60 on the first GPIO_1 port is an active level, the control circuit 60 can determine that the user's pressing operation on the target button 00 is not detected. Wherein, the invalid level may be a low level, and the valid level may be a high level; or, the invalid level may be a high level, and the valid level may be a low level.
  • GPIO general purpose input/output
  • the inactive level is a low level
  • the voltage of the signal detected by the control circuit 60 on the first GPIO_1 port is less than 0.7 volts (V).
  • the control circuit 60 is also provided with a second GPIO_2 port. After detecting the shutdown operation, the control circuit 60 can output an invalid level signal through the second GPIO_2 port, and the motherboard 10 performs a normal shutdown process after receiving the invalid level signal.
  • control circuit 60 may confirm that the forced shutdown operation is detected. At this time, the control circuit 60 can respectively detect whether the main board 10 and the display panel 20 are in a dead state.
  • the target duration is a fixed duration pre-stored in the control circuit 60 .
  • the embodiments of the present disclosure provide a projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the light valve to reset, and then control the light valve to supply power. The circuit stops powering the light valve.
  • the light valve power supply circuit can be controlled to stop supplying power to the light valve. In this way, it is possible to avoid the situation where the user directly unplugs the power supply to restart the projection device, which causes damage to the light valve in the projection device, thereby prolonging the life of the projection device.
  • the control circuit 60 when the control circuit 60 detects whether the main board 10 and the display panel 20 are in a dead state, the control circuit 60 may send detection messages to the main board 10 and the display panel 20 respectively. If the control circuit 60 receives the response message sent by the mainboard 10 within the first communication duration, the control circuit 60 may determine that the mainboard 10 is not in a dead state. If the control circuit 60 does not receive the response message sent by the main board 10 within the first communication period, the control circuit 60 may determine that the main board 10 is in a dead state.
  • the first communication duration may be a fixed duration pre-stored in the control circuit 60 .
  • control circuit 60 may determine that the display panel 20 is not in a dead state. If the control circuit 60 does not receive the response message sent by the display panel 20 within the second communication period, the control circuit 60 may determine that the display panel 20 is in a dead state.
  • the second communication duration may be a fixed duration pre-stored in the control circuit 60 .
  • control circuit 60 can be connected to the main board 10 and the display board 20 through I2C, respectively, then the control circuit 60 can send detection messages to the main board 10 and the display board 20 through the I2C. At the same time, the main board 10 and the display board 20 can send a response message to the control circuit 60 through the I2C.
  • control circuit 60 may send a reset instruction to the display panel 20 .
  • the display panel 20 may control the light valve 30 to reset in response to the reset instruction.
  • the light valve 30 includes a plurality of digital micromirror devices arranged in an array, and the distance between any two adjacent digital micromirror devices in the plurality of digital micromirror devices is relatively small.
  • the display panel 20 is also used to control the light valve power supply circuit 70 to supply power to the light valve 30 and transmit the first target control signal to the light valve 30 .
  • the first target control signal is used to control the light valve 30 to deflect from the initial position to the target position.
  • the display panel 20 controls the light valve 30 to deflect the target position through the light valve control signal Ct, and the deflected light valve 30 is used to transmit the light beam from the light source 40 transmitted to the projection lens 50 .
  • the display panel 20 sends a second target control signal to the light valve 30, where the second target control signal is used to control the light valve 30 to deflect to the initial position. Then, the display panel 20 controls the light valve power supply circuit 70 to stop supplying power to the light valve 30, so that the light valve 30 completely discharges the stored charges.
  • the light valve power supply circuit 70 stops supplying power to the light valve 30, and the light valve 30 is not deflected at this time. to the initial position, and the charge stored in the light valve 30 has not been released. Then the charge stored in the light valve 30 will drive the light valve 30 to deflect at a larger angle, that is, the plurality of digital micromirror devices included in the light valve 30 will be deflected at a larger angle, thereby causing any adjacent Two digital micromirror devices collide, causing damage to some of the digital micromirror devices.
  • the control circuit 20 detects that the main board 10 is in a dead state and the display panel 20 is not in a dead state, it sends a reset instruction to the display panel 20, so that the control circuit 20 is in a power-off state before the control circuit 20 is in a power-off state.
  • the light valve 30 is controlled to reset, and the light valve power supply circuit 70 is controlled to stop supplying power to the light valve 30 . This avoids the situation that the light valve 30 is not reset after the display panel 20 is powered off, or the light valve 30 is damaged due to the electric charge stored in the light valve 30 is not released, and the reliability of the control of the light valve 30 is ensured.
  • the light valve power supply circuit 70 may include a first switch sub-circuit U1, a second switch sub-circuit U2, a third switch sub-circuit U3, a fourth switch sub-circuit U4, a first circuit R1, a second resistor R2, The third resistor R3, the fourth resistor R4, the first power terminal Vc, the second power terminal Vo, the third power terminal Vb, the fourth power terminal Vr, the fifth power terminal G1, the sixth power terminal G2, the seventh power terminal G3 and the eighth power supply terminal G4.
  • the control terminal of the first switch sub-circuit U1 is connected to the display panel 20, and the input terminal of the first switch sub-circuit U1 is respectively connected to one end of the first resistor R1, the control terminal of the second switch sub-circuit U2, and the third switch.
  • the control terminal of the sub-circuit U3 is connected to the control terminal of the fourth switch sub-circuit U4.
  • the output terminal of the first switch sub-circuit U1 is connected to the fifth power terminal G1, and the other terminal of the first resistor R1 is connected to the first power terminal Vc.
  • the input end of the second switch sub-circuit U2 is connected to one end of the second resistor R2, the output end of the second switch sub-circuit U2 is connected to the sixth power supply end G2, and the other end of the second resistor R2 is connected to the second power supply end One end of Vo is connected, and the other end of the second power source Vo is connected to the light valve 30 .
  • the input end of the third switch sub-circuit U3 is connected to one end of the third resistor R3, the output end of the third switch sub-circuit U3 is connected to the seventh power supply end G3, and the other end of the third resistor R3 is connected to the third power supply end One end of Vb is connected, and the other end of the third power supply terminal Vb is connected to the light valve 30 .
  • the input terminal of the fourth switch sub-circuit U4 is connected to one end of the fourth resistor R4, the output terminal of the fourth switch sub-circuit U4 is connected to the eighth power terminal G4, and the other terminal of the fourth resistor R4 is connected to the fourth power terminal One end of Vr is connected, and the other end of the fourth power supply terminal Vr is connected to the light valve 30 .
  • the first power terminal Vc, the second power terminal Vo, the third power terminal Vb and the fourth power terminal Vr may be all DC power terminals
  • the seventh power terminal G3 and the eighth power terminal G4 may both be ground terminals (ground, GND).
  • the display panel 20 outputs the enable signal EN to the light valve power supply circuit 70, and the first switch sub-circuit U1 conducts the enable signal when the enable signal is at an active level. Pass.
  • the part of the signal is transmitted to the fifth power terminal G1 through the first switch sub-circuit U1.
  • the other part of the signal is transmitted to the control terminal of the second switch sub-circuit U2, the control terminal of the third switch sub-circuit U3 and the control terminal of the fourth switch sub-circuit U4 to transmit the power signal.
  • the second switch sub-circuit U2, the third switch sub-circuit U3 and the fourth switch sub-circuit U4 are turned off under the control of the other part of the signal.
  • the second switch sub-circuit U2, the third switch sub-circuit U3 and the fourth switch sub-circuit U4 are not conducting, and the second power supply terminal Vo, the third power supply terminal Vb and the fourth power supply terminal Vr are respectively transmitted to the light valve 30.
  • the power supply signal thereby achieving power supply to the light valve 30 .
  • the display panel 20 transmits the light valve control signal Ct to the light valve 30 to control the deflection of the light valve 30 .
  • the voltage of the power signal transmitted by the second power terminal Vo to the light valve 30 may be V1
  • the voltage of the power signal transmitted by the third power terminal Vb to the light valve 30 may be V2
  • the fourth power terminal Vr to the light valve 30 The voltage of the transmitted power supply signal is V3.
  • the display panel 20 When the display panel 20 controls the light valve 30 to reset, the display panel 20 first transmits a second target control signal to the light valve 30, and the light valve 30 returns to the initial position under the control of the second target control signal. After that, when the display panel 20 controls the light valve power supply circuit 70 to stop supplying power to the light valve 30, the display panel 20 transmits the enable signal EN at an inactive level to the control terminal of the first switch sub-circuit U1.
  • the switch subcircuit U1 is turned off.
  • the power signal transmitted by the first power terminal Vc is transmitted to the control terminal of the second switch sub-circuit U2, the control terminal of the third switch sub-circuit U3 and the control terminal of the fourth switch sub-circuit U4 through the first resistor R1.
  • the first switch sub-circuit U1 Since the first switch sub-circuit U1 is disconnected, the first switch sub-circuit U1 will not divide the voltage, so the voltage of the power supply signal transmitted to the second switch sub-circuit U2, the third switch sub-circuit U3 and the fourth switch sub-circuit U4 higher, then the second switch sub-circuit U2, the third switch sub-circuit U3 and the fourth switch sub-circuit U4 are turned on under the control of the power supply signal. At this time, the electric charge stored in the light valve 30 and the power supply signal provided by the second power supply terminal Vo are transmitted to the sixth power supply terminal G2 through the second resistor R2 and the second switch sub-circuit U2.
  • the electric charge stored in the light valve 30 and the power supply signal provided by the third power supply terminal Vb are transmitted to the seventh power supply terminal G3 through the third resistor R3 and the third switch sub-circuit U3.
  • the electric charge stored in the light valve 30 and the power supply signal provided by the fourth power supply terminal Vr are transmitted to the eighth power supply terminal G4 through the fourth resistor R4 and the fourth switching sub-circuit U4, thereby realizing the rapid release of the electric charge stored in the light valve 30 .
  • the projection apparatus may further include a power supply control circuit N1, the first input terminal of the power supply control circuit N1 is connected to the control circuit 60, the second input terminal of the power supply control circuit N1 is connected to the display panel 20, and the power supply control circuit N1 is connected to the display panel 20.
  • the output end of the circuit N1 is connected to the light valve power supply circuit 70 .
  • the power supply control circuit N1 may be a logic AND device.
  • the control circuit 60 is also used for sending a first control signal to the power supply control circuit N1.
  • the display panel 20 is also used to send an enable signal EN to the power supply control circuit N1.
  • the enable signal EN When the display panel 20 is powered on, the enable signal EN is at an active level.
  • the enable signal EN When the display panel 20 is powered off, the enable signal EN is at an active level.
  • the enable signal EN is at an inactive level.
  • control circuit 60 is further provided with a third GPIO_3 port, and the control circuit 60 can send the first control signal to the power supply control circuit N1 through the third GPIO_3 port.
  • the power supply control circuit N1 is used to control the light valve power supply circuit 70 to stop supplying power to the light valve 30 when any one of the first control signal and the enable signal EN is at an inactive level, and the power supply control circuit N1 is used for the When both the first control signal and the enable signal EN are at an active level, the light valve power supply circuit 70 is controlled to supply power to the light valve 30 .
  • the first control signal When the display panel 20 is in a dead state, the first control signal is at an inactive level. When the main board 10 is in a dead state and the display panel 20 is not in a dead state, the first control signal is at an inactive level.
  • control circuit 60 is further configured to control the circuit boards in the dead state of the main board 10 and the display panel 20 to restart if it is detected that the main board 10 and/or the display panel 20 are in a dead state.
  • the projection apparatus may further include a first switch SW1 , a second switch SW2 and a power board 80 .
  • the control terminal of the first switch SW1 is connected to the control circuit 60
  • the input terminal of the first switch SW1 is connected to the power board 80
  • the output terminal of the first switch SW1 is connected to the main board 10 .
  • the control end of the second switch SW2 is connected to the control circuit 60 and/or the main board 10 , the input end of the second switch SW2 is connected to the power board 80 , and the output end of the second switch SW2 is connected to the display panel 20 .
  • the control terminal of the second switch SW2 is connected to the main board 10 .
  • the control terminal of the second switch SW2 is connected to the control circuit 60 .
  • the control terminal of the second switch SW2 is connected to the control circuit 60 and the main board 10 .
  • the control circuit 60 is configured to control the first switch SW1 to be turned off if it is detected that the mainboard 10 is in a dead state, and to control the first switch SW1 to be turned on after the first switch SW1 is turned off for a first period of time.
  • the first duration is a fixed duration pre-stored in the control circuit 60.
  • the power board 80 stops providing a power signal to the main board 10, thereby making the main board 10 in a power-off state.
  • the control circuit 60 controls the first switch SW1 to be closed, the power board 80 can provide a power signal to the main board 10, thereby making the main board 10 in a power-on state.
  • the control circuit 60 first controls the first switch SW1 to open, and then controls the first switch SW1 to close, so as to first control the mainboard 10 to be in a power-off state, and then control the mainboard 10 to be in a power-on state, thereby restarting the mainboard 10 .
  • the control circuit 60 is configured to control the second switch SW2 to be turned off if it is detected that the display panel 20 is in a dead state, and control the second switch SW2 to be turned on after the second switch SW2 is turned off for a second time period.
  • the second duration is a fixed duration pre-stored in the control circuit 60 .
  • the power board 80 stops providing a power signal to the display board 20, thereby making the display board 20 in a power-off state.
  • the power supply board 80 can provide a power supply signal to the display panel 20, thereby making the display panel 20 in a power-on state.
  • the control circuit 60 first controls the second switch SW2 to open, and then controls the second switch SW2 to close, so as to first control the display panel 20 to be in a power-off state and then control the display panel 20 to be in a power-on state, thereby realizing the control of the display panel 20 restart.
  • control circuit 60 when the host 10 is in a dead state and the display panel 20 is not in a dead state, the control circuit 60 can respectively control the main board 10 and the display board 20 to restart, or can only control the main board 10 to restart.
  • control circuit 60 is further configured to send a reset command to the display panel 20 if it is detected that the mainboard 10 is in a crash state and the display panel 20 is not in a crash state.
  • the display panel 20 may control the light valve 30 to reset in response to the reset instruction. After that, after controlling the light valve 30 to reset, the display panel 20 sends reset confirmation information to the control circuit 60 .
  • the control circuit 60 is configured to control the light valve power supply circuit 70 to stop supplying power to the light valve 30 after receiving the reset confirmation information. Then, the first switch SW1 is controlled to be turned off, and after the first switch SW1 is turned off for a first period of time, the first switch SW1 is turned on and closed.
  • the display panel 20 is provided with a fourth GPIO_4 port, and the display panel 20 can send reset confirmation information to the control circuit 60 through the fourth GPIO_4 port.
  • the control circuit 60 controls the main board 10 and the display panel 20 to restart respectively after controlling the light valve power supply circuit 70 to stop supplying power to the light valve 30, as the implementation of the present disclosure.
  • the control terminal of the second switch SW2 is connected to the main board 10 .
  • the mainboard 10 is used to control the second switch SW2 to be closed when the mainboard 10 is powered on, and to turn off the second switch SW2 when the mainboard 10 is powered off.
  • the power supply board 80 When the main board 10 is in the power-on state, since the second switch SW2 is closed, the power supply board 80 provides a power supply signal for the display panel 20, and the display panel 20 is in the power-on state at this time.
  • the power supply board 80 stops providing power signals to the display panel 20, and the display panel 20 is in a power-off state at this time.
  • the control circuit 60 turns off the first switch SW1 first, so that both the main board 10 and the display panel 20 are in a power-off state. Afterwards, the control circuit 60 controls the first switch SW1 to close again, so that the main board 10 and the display panel are in a power-on state, thereby realizing the control circuit 60 to respectively control the main board 10 and the display panel 20 to restart.
  • the control circuit 60 controls the main board 10 and the display panel 20 to restart respectively after controlling the light valve power supply circuit 70 to stop supplying power to the light valve 30, as the implementation of the present disclosure.
  • the projection apparatus may further include a switch control circuit N2.
  • the first input end of the switch control circuit N2 is connected to the control circuit 60, the second input end of the switch control circuit N2 is connected to the motherboard 10, the output end of the switch control circuit N2 is connected to the control end of the second switch SW2, In this way, the control end of the second switch SW2 is connected to the main board 10 and the control circuit 60 .
  • the switch control circuit N2 may be a logic OR device.
  • the control circuit 60 is further configured to send a second control signal to the switch control circuit N2, and the mainboard 10 is configured to send a third control signal to the switch control circuit N2.
  • the switch control circuit N2 is configured to control the second switch SW2 to be closed if it is detected that the second control signal is at an active level, and/or the third control signal is at an active level.
  • the switch control circuit N2 is configured to control the second switch SW2 to be turned off if it is detected that the second control signal and the third control signal are both inactive levels.
  • the level of the second control signal sent to the switch control circuit N2 is an inactive level.
  • the level of the third control signal sent by the mainboard 10 to the switch control circuit N2 is an inactive level.
  • the control circuit 60 may first control the main board 10 In a power-off state, the display panel 20 is then controlled to be in a power-off state. After that, the control circuit 60 can control the main board 10 and the display panel 20 to be in a power-on state.
  • the switch control circuit N2 can control the second switch SW2 to turn off, and the display Board 20 is also powered off.
  • the embodiment of the present disclosure does not limit the sequence in which the control circuit 60 controls the main board 10 and the display panel 20 to be in the power-on state.
  • the control circuit 60 first controls the main board 10 to be in a power-on state, and then controls the display panel 20 to be in a power-on state.
  • the control circuit 60 may first control the first switch SW1 to be closed, so as to control the mainboard 10 to be in a power-on state.
  • the control circuit 60 may send a switch closing instruction to the main board 10, and/or, the control circuit 60 may send a first switch signal, where the first switch signal is an active level or an inactive level.
  • the mainboard 10 may send a third control signal at an active level to the switch control circuit N2 in response to the switch on command, so that the switch control circuit N2 controls the second switch SW2 to close, thereby realizing that the display panel 20 is powered on state.
  • control circuit 60 first controls the display panel 20 to be in the power-on state, and then controls the main board 10 to be in the power-on state.
  • control circuit 60 may send a second control signal at an active level to the switch control circuit N2, so that the switch control circuit N2 controls the second switch SW2 to be closed, thereby realizing that the display panel 20 is in a power-on state.
  • control circuit 20 can control the first switch SW1 to be closed, so as to control the main board 10 to be in a power-on state.
  • control circuit 60 may simultaneously control the main board 10 and the display panel 20 to be in a power-on state.
  • control circuit 60 may send a second control signal at an active level to the switch control circuit N2 while controlling the first switch SW1 to be closed.
  • control circuit 60 is further provided with a fifth GPIO_5 port, and the control circuit 60 can send the second control signal to the switch control circuit N2 through the fifth GPIO_5 port.
  • the main board 10 may be provided with a sixth GPIO_6 port, and the main board 10 may send a third control signal to the switch control circuit N2 through the sixth GPIO_6 port.
  • the control circuit 60 can first control the light valve power supply circuit 70 to stop supplying power to the light valve 30 .
  • the control circuit 60 can then control the display panel 20 to restart.
  • the control circuit 60 may only control the display panel 20 to restart, or may control the display panel 20 and the main board 10 to restart respectively, which is not limited in this embodiment of the present disclosure.
  • FIG. 7-2 provides a schematic structural diagram of yet another projection device.
  • the light valve power supply circuit 70 only receives the EN enable control signal from the display panel 20 .
  • the control circuit 60 may send a second control circuit at an active level to the switch control circuit N2 during the process of only controlling the motherboard 10 to restart. signal, thereby ensuring that the switch control circuit N2 can control the second switch SW2 to close when the main board 10 is in a power-off state, thereby ensuring that the display panel 20 is in a power-on state.
  • the display panel 20 is also used for displaying prompt information on the projection screen in the above-mentioned power-on state, where the prompt information is used to prompt that the main board 10 is being restarted.
  • the display panel 20 is also used to send confirmation information to the control circuit 60 while displaying the prompt information, and the control circuit 60 is used to control the main board 10 to restart after receiving the prompt confirmation information. And by controlling the display panel 20 to display prompt information on the projection screen, so that the user knows that the motherboard 10 is currently restarting, avoiding the situation that the user directly unplugs the power supply during the restarting of the motherboard 10, thereby ensuring the reliability of the control of the projection device. sex.
  • control circuit 60 can send a prompt command to the display panel 20 through I2C.
  • the display panel 20 can also send a prompt confirmation message to the control circuit 60 through I2C.
  • the mainboard 10 can send a video image signal to the display panel 10, so that the display panel 20 displays the projected image and no longer displays the prompt information.
  • control circuit 60 may not send a reset signal to the display panel 20, but ensure that the display panel 20 has a normal state through the control signal.
  • the power supply state of the light valve 30 is maintained, and the power failure does not occur due to the power failure of the main board 10, thereby avoiding the sudden power failure of the light valve 30, and ensuring the reliability of the light valve 30 operation.
  • the control circuit 60 when the control circuit 60 detects that the display panel 20 is in a dead state and the mainboard 10 is not in a dead state, the control circuit 60 may only control the display panel 20 to restart.
  • the control circuit 60 may send a switch-off command to the main board 10 , and the main board 10 may respond to the switch-off command by sending the switch control circuit N2 in an invalid power state. flat third control signal.
  • the control circuit 60 also sends the second control signal at the inactive level to the switch control circuit N2.
  • the switch control circuit N2 may further control the second switch SW2 to be turned off in response to the second control signal and the third control signal, thereby making the display panel 20 in a power-off state.
  • the control circuit 40 may send a switch closing instruction to the main board 10, and the main board 10 may respond to the switch closing instruction and send the first switch at a valid level to the switch control circuit N2.
  • the level of the second control signal sent by the control circuit 60 to the switch control circuit N2 may be an inactive level or an active level.
  • the switch control circuit N2 can control the second switch SW2 to be closed under the control of the second control signal and the third control signal, thereby making the display panel 20 in a power-on state and realizing restarting of the display panel 20 .
  • the control circuit 40 may send the level of the second control signal at the active level to the switch control circuit N2.
  • the switch control circuit N2 may, under the control of the second control signal, control the second switch SW2 to be closed, thereby making the display panel 20 in a power-on state and realizing restarting of the display panel 20 .
  • the control circuit 60 may send a switch-off command to the main board 10 .
  • the mainboard 10 may control the second switch SW2 to be turned off in response to the switch-off command, thereby making the display panel 20 in a turned-off state.
  • the control circuit 40 may send a switch closing instruction to the main board 10, and the main board 10 may control the second switch SW2 to close in response to the switch closing instruction, thereby realizing the control of the display panel. 20 reboot.
  • control circuit 60 When the control circuit 60 detects that the display panel 20 is in a crash state and the main board 10 is not in a crash state, the control circuit 60 may further control the motherboard 10 and the display panel 20 to restart respectively.
  • the control circuit 20 may firstly control the main board 10 and the display panel 20 to be in a power-off state, and then control the main board 10 and the display panel 20 to be in a power-on state.
  • the sequence in which the control circuit 60 controls the main board 10 and the display panel 20 to be in the power-off state, and the sequence in which the control circuit 60 controls the main board 10 and the display panel 20 in the power-on state is not limited.
  • control circuit 60 may firstly control the display panel 20 to be in a power-off state, and then control the main board 10 to be in a power-off state. After that, the control circuit 60 can control the main board 10 to be in a power-on state, and then control the display panel 20 to be in a power-on state, thereby realizing the restart of the main board 10 and the display board 20 .
  • control circuit 60 controls the display panel 20 to be in the power-on state and the power-off state
  • the process that the control circuit 60 controls the mainboard 10 to be in the power-on state and the power-off state reference may be made to the above-mentioned embodiments, which will not be repeated in the embodiments of the present disclosure.
  • control circuit 60 is further configured to first control the light valve power supply circuit 70 to stop supplying power to the light valve 30, and then respectively control the main board 10 and the display panel 20 to restart , for the process in which the control circuit 60 controls the main board 10 and the display panel 20 to restart, reference may be made to the foregoing embodiments, which will not be repeated in the embodiments of the present disclosure.
  • control circuit 60 can respectively control the main board 10 to be in a power-off state, then control the main board 10 to be in a power-on state, and then control the display panel 20 to be in a power-on state.
  • the light source 40 can also be turned off, thereby preventing the projection lens from projecting the laser beam to the projection screen when the projection screen does not display an image, ensuring that display effect.
  • control circuit 60 also outputs a control signal for controlling the power supply of the display panel 20.
  • control signal maintains the normal power supply of the display panel 20, so that the display panel 20 is powered on. It is not affected by the main board 10 connection and power failure, so that the light valve will not suddenly interrupt the power supply, which ensures the reliable operation of the light valve.
  • the projection apparatus may include a main board 1 , a display panel 2 , a power board 3 , a light valve 4 , a power supply circuit 5 and a switch SW.
  • the power board 3 is respectively connected with the main board 1 and the display board 2
  • the display board 2 is connected with the light valve 4 and the power supply circuit 5 respectively.
  • the control end of the switch SW is connected to the main board 1
  • the input end of the switch SW is connected to the power supply board 3
  • the output end of the switch SW is connected to the display panel 2 .
  • the power supply board 3 can supply power to the main board 1 , the display board 2 and other components in the projection device
  • the power supply circuit 5 is used to supply power to the light valve 4 .
  • the main board 1 can generate a shutdown command after detecting the user's click instruction on the shutdown button 0 .
  • the shutdown command can be sent to the display panel 2, and the display panel 2 can control the light valve 4 to deflect to the initial position and control the power supply circuit 5 to stop supplying power to the light valve 4 in response to the shutdown command.
  • the display panel 2 can send a confirmation instruction to the main board 1, and the main board 1 can control the power supply board 3 to stop supplying power to some devices in the main board 1, the display panel 2 and other devices in the projection device in response to the confirmation instruction, thereby realizing the
  • the projection device is turned off, and then the main board 1 can control the power board 3 to supply power to all components in the projection device in response to the power-on command, thereby realizing the restart of the projection device.
  • the mainboard 1 when the mainboard 1 crashes, it cannot detect or respond to a shutdown command. At this time, the user can only unplug the power supply of the projection device, and after replugging the power supply for the projection device, restart the projection device, so as to restart the main board 1 .
  • the mainboard 1 crashes after the mainboard 1 crashes, other components in the projection device may still be in working state, so the user restarts the mainboard by unplugging the power supply, which may cause damage to the light valve in the projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the light valve to reset, and then control the light valve power supply circuit to stop supplying power to the light valve.
  • the light valve power supply circuit can be controlled to stop supplying power to the light valve.
  • the control circuit also outputs a control signal for controlling the power supply of the display panel.
  • the control signal maintains the normal power supply of the display panel, so that the display panel is not affected by the power supply of the main board.
  • the above-mentioned technical means can avoid the situation where the user directly unplugs the power supply to restart the projection device, which causes damage to the light valve in the projection device, and ensures the reliability of the operation of the projection device.
  • the embodiments of the present disclosure provide a projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the light valve to reset, and then control the light valve to supply power.
  • the circuit stops powering the light valve.
  • the control circuit can control the light valve power supply circuit to stop supplying power to the light valve when it is determined that the display panel is in a dead state.
  • FIG. 9 is a schematic structural diagram of still another projection device provided by an embodiment of the present disclosure.
  • the projection apparatus may include a main board 10 , a display panel 20 , a light valve 30 , a light source 40 , a projection lens 50 and a control circuit 60 .
  • the main board 10 is connected to the display board 20, and the main board 10 is used for sending image signals to the display board 20;
  • the display panel 20 is also connected with the light valve 30 , the display panel 20 is used for generating a light valve control signal according to the image signal, and controlling the light valve 30 to turn over according to the light valve control signal, so as to transmit the light beam emitted by the light source 40 to the projection lens 50 .
  • the projection lens 50 is used to project the light beam into an image.
  • the control circuit 60 is connected to the mainboard 10 and the display panel 20 respectively, and the control circuit 60 is used to detect whether the mainboard 10 and the display panel 20 are in a dead state respectively if a forced shutdown operation is detected. If it is detected that the main board 10 is in a dead state and the display panel 20 is not in a dead state, the main board 10 is controlled to restart, and the running state of the display panel 20 is not adjusted.
  • the embodiments of the present disclosure provide a projection device.
  • a control circuit in the projection device detects a forced shutdown operation, if it is determined that the main board is in a dead state and the display panel is not in a dead state, it can control the main board. reboot. In this way, it is avoided that the user directly unplugs the power supply to restart the projection device, thereby causing damage to the components in the projection device, thereby ensuring the reliability of the operation of the projection device.
  • the main control circuit 60 When the host 10 is in a crash state and the display panel 20 is not in a crash state, if the main control circuit 60 only controls the motherboard 10 to restart, the main control circuit 60 is also used to detect that the motherboard 10 is in a crash state and the display panel If the 20 is not in a dead state, a prompt instruction is sent to the display panel 20 .
  • the display panel 20 is further configured to display prompt information on the projection screen in response to the prompt instruction, and send prompt confirmation information to the main control circuit 60, where the prompt information is used to prompt that the main board 10 is restarting.
  • the main control circuit 60 is used to control the main board 10 to restart after receiving the prompt confirmation message.
  • the main control circuit 60 when the main control circuit 60 only controls the main board 10 to restart, the main control circuit 60 sends a second control signal at an active level to the switch control circuit N1, thereby ensuring that the main board 10 is in the off state.
  • the switch control circuit N1 can control the second switch SW2 to be closed, thereby ensuring that the display panel 20 is in the power-on state.
  • the display panel 20 by controlling the display panel 20 to display prompt information on the projection screen, so that the user knows that the motherboard 10 is currently restarting, avoiding the situation that the user directly unplugs the power supply during the restarting of the motherboard 10, thereby ensuring the reliability of the control of the projection device. sex.
  • the main control circuit 60 can send a prompt command to the display panel 20 through I2C.
  • the display panel 20 can also send a prompt confirmation message to the main control circuit 60 through I2C.
  • the main board 10 can send an image signal to the display panel 10, so that the display panel 20 displays an image.
  • the embodiments of the present disclosure provide a projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the reset of the light valve, and then control the light valve.
  • the power supply circuit stops supplying power to the light valve.
  • the control circuit can control the light valve power supply circuit to stop supplying power to the light valve when it is determined that the display panel is in a dead state. In this way, it is possible to avoid the situation where the user directly unplugs the power supply to restart the projection device, which causes damage to the light valve in the projection device, thereby prolonging the life of the projection device.
  • the embodiment of the present disclosure also provides a projection device, when the control circuit in the projection device detects a forced shutdown operation, if it is determined that the main board is in a dead state, the power supply state of the display board is maintained, and the display board performs the operation.
  • the main board is restarting, and the main control circuit powers off and restarts the main board after receiving the confirmation message from the display board.
  • FIG. 10 is a flowchart of a method for controlling a projection device provided by an embodiment of the present disclosure, which is applied to the projection device shown in any of FIG. 1 , FIG. 2 , and FIG. 5 to FIG. 7-1 .
  • the method can include:
  • Step 1001 If the control circuit detects the forced shutdown operation, it sends detection signals to the main board and the display panel respectively.
  • Step 1002 If the control circuit detects that the response signal sent by the main board is not received within the first communication duration, and the response signal sent by the display panel is received within the second communication duration, it controls the light valve to reset, and controls the light valve. After reset, control the light valve power supply circuit to stop supplying power to the light valve.
  • Step 1003 If the control circuit detects that the response signal sent by the display panel is not received within the second communication period, the control circuit controls the light valve power supply circuit to stop supplying power to the light valve.
  • the embodiments of the present disclosure provide a control method for a projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the reset of the light valve, and then control the The light valve power supply circuit stops supplying power to the light valve.
  • the control circuit can control the light valve power supply circuit to stop supplying power to the light valve when it is determined that the display panel is in a dead state. In this way, it is possible to avoid the situation where the user directly unplugs the power supply to restart the projection device, which causes damage to the light valve in the projection device, thereby prolonging the life of the projection device.
  • FIG. 11 is a flowchart of a method for controlling a projection device provided by an embodiment of the present disclosure, and the method can be applied to the projection devices shown in FIGS. 1 , 2 , 5 to 7-1 .
  • the method may include:
  • Step 1101 If the control circuit detects the forced shutdown operation, it sends detection signals to the main board and the display panel respectively.
  • Step 1102 If the control circuit detects that the response signal sent by the main board is not received within the first communication duration, and the response signal sent by the display panel is received within the second communication duration, the control circuit sends a reset command to the display panel.
  • Step 1103 the display panel controls the light valve to reset in response to the reset instruction.
  • Step 1104 The control circuit sends a first control signal at an inactive level to the power supply control circuit.
  • Step 1105 The display panel sends an enable signal at an active level to the power supply control circuit.
  • Step 1106 The power supply control circuit controls the light valve power supply circuit to stop supplying power to the light valve under the control of the first control signal at the inactive level and the enable signal at the active level.
  • Step 1107 the control circuit controls the motherboard to restart.
  • the embodiments of the present disclosure provide a control method for a projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the reset of the light valve, and then control the The light valve power supply circuit stops supplying power to the light valve.
  • the control circuit can control the light valve power supply circuit to stop supplying power to the light valve when it is determined that the display panel is in a dead state. In this way, it is possible to avoid the situation where the user directly unplugs the power supply to restart the projection device, which causes damage to the light valve in the projection device, thereby prolonging the life of the projection device.
  • FIG. 12 is a flowchart of a method for controlling a projection device provided by an embodiment of the present disclosure, and the method may be applied to the projection device as shown in any of FIGS. 1 , 2 , 5 to 7-1 . As shown in Figure 12, the method may include:
  • Step 1201 If the control circuit detects the forced shutdown operation, it sends detection signals to the main board and the display panel respectively.
  • Step 1202 If the control circuit does not receive the response signal sent by the display panel within the second communication time period, it sends the first control signal at an inactive level to the power supply control circuit.
  • Step 1203 The display panel sends an enable signal at an active level to the power supply control circuit.
  • the enable signal when the display panel is in a power-on state, the enable signal is at an active level, and when the display panel is in a power-off state, the enable signal is at an inactive level.
  • Step 1204 The power supply control circuit controls the light valve power supply circuit to stop supplying power to the light valve when any one of the first control signal and the enable signal is at an invalid level.
  • the projection apparatus further includes a power supply control circuit.
  • the first input end of the power supply control circuit is connected to the control circuit, the second input end of the power supply control circuit is connected to the display panel, and the output end of the power supply control circuit is connected to the light valve power supply circuit.
  • the control circuit also sends a third control signal to the power supply control circuit.
  • Step 1205 the control circuit controls the display panel to restart.
  • the embodiments of the present disclosure provide a control method for a projection device.
  • the control circuit in the projection device determines that the main board is in a dead state and the display panel is not in a dead state, it can first control the reset of the light valve, and then control the The light valve power supply circuit stops supplying power to the light valve.
  • the control circuit can control the light valve power supply circuit to stop supplying power to the light valve when it is determined that the display panel is in a dead state. In this way, it is possible to avoid the situation where the user directly unplugs the power supply to restart the projection device, which causes damage to the light valve in the projection device, thereby prolonging the life of the projection device.
  • FIG. 13 is a flowchart of a method for controlling a projection device provided by an embodiment of the present disclosure, and the method can be applied to the projection device shown in FIG. 7-1 . As shown in Figure 13, the method may include:
  • Step 1301 If the control circuit detects the forced shutdown operation, it sends detection signals to the main board and the display panel respectively.
  • Step 1302 if the control circuit detects that the response signal sent by the main board is not received within the first communication duration, and the response signal sent by the display panel is received within the second communication duration, the control circuit restarts the main board and does not adjust the display panel. Operating status.
  • the embodiments of the present disclosure provide a method for controlling a projection device.
  • a control circuit in the projection device detects a forced shutdown operation, if it is determined that the main board is in a crash state and the display panel is not in a crash state, the Can control the motherboard to restart. This avoids the situation where the user directly unplugs the power supply to restart the projection device, thereby causing damage to components in the projection device, thereby prolonging the life of the projection device.
  • FIG. 14 is a flowchart of another method for controlling a projection device provided by an embodiment of the present disclosure, and the method can be applied to the projection device shown in FIG. 7-1 .
  • the method may include:
  • Step 1401 If the control circuit detects a forced shutdown operation, it respectively detects whether the main board and the display board are in a dead state.
  • Step 1402 If the control circuit detects that the response signal sent by the main board is not received within the first communication duration, and the response signal sent by the display panel is received within the second communication duration, the control circuit sends a prompt instruction to the display panel.
  • Step 1403 In response to the prompt instruction, the display panel displays prompt information on the projection screen, and sends prompt confirmation information to the control circuit.
  • the prompt information is used to prompt that the motherboard is restarting.
  • Step 1404 After receiving the prompt confirmation message, the control circuit controls the motherboard to restart.
  • the embodiments of the present disclosure provide a method for controlling a projection device.
  • a control circuit in the projection device detects a forced shutdown operation, if it is determined that the main board is in a crash state and the display panel is not in a crash state, the Can control the motherboard to restart. This avoids the situation where the user directly unplugs the power supply to restart the projection device, thereby causing damage to components in the projection device, thereby prolonging the life of the projection device.
  • FIG. 15 is a flowchart of another method for controlling a projection device provided by an embodiment of the present application, and the method can be applied to the projection device shown in FIG. 7-1 or FIG. 7-2 .
  • the method may include:
  • Step 1501 If the control circuit detects a forced shutdown operation, it detects whether the main board is in a dead state.
  • Step 1502 If the control circuit detects that the main board is in a dead state, it sends a prompt instruction to the display panel, and controls the display panel to be in a power-on state.
  • control circuit outputs a control signal to the second switch SW1, so that the second switch SW1 is in an effective state of connecting the power supply board, thereby ensuring that the display board is in a power-on state.
  • control signal output by the control circuit and the control signal output by the main board are ORed together as the switch control signal for the power supply of the display panel.
  • control end of the second switch SW2 is connected to the control circuit and the main board, the input end of the second switch is connected to the power board, and the output end of the second switch is connected to the display panel.
  • Step 1503 In response to the prompt instruction, the display panel displays prompt information on the projection screen, and sends prompt confirmation information to the control circuit.
  • the prompt information is used to prompt that the motherboard is restarting.
  • Step 1504 After receiving the prompt confirmation message, the control circuit controls to disconnect the power supply of the main board.
  • the above method may also include:
  • Step 1505 After the power supply of the mainboard is disconnected for a preset time period, the power supply of the mainboard is restored.
  • the embodiment of the present disclosure provides a control method for a projection device.
  • a control circuit in the projection device detects a forced shutdown operation, if it is determined that the main board is in a dead state, the power supply state of the display board is maintained, and the main board is operated by the display board. Restarting prompt, and the main control circuit powers off and restarts the main board after receiving the prompt confirmation message from the display board.
  • the user directly unplugs the power supply to restart the projection device, which causes damage to the components in the projection device, and in the above embodiment, the display panel is not powered off, thereby avoiding the situation that the light valve encounters a sudden power failure, The reliability of the operation of the projection equipment is ensured.
  • the sequence of steps of the control method of the projection device provided by the embodiment of the present application may be adjusted appropriately, and the steps may also be deleted according to the situation.
  • the above steps 1102 to 1107 can be deleted according to the situation.
  • steps 1202 to 1205 can be deleted according to circumstances.
  • step 1302 can be deleted according to the situation.
  • steps 1402 to 1403 can be deleted according to the situation. Any person skilled in the art who is familiar with the technical scope disclosed in the present application can easily think of any variation of the method, which should be covered by the protection scope of the present application, and thus will not be repeated here.
  • An embodiment of the present disclosure provides a laser projection device, including: a memory, a processor, and a computer program stored on the memory, and the processor implements the method embodiment of the above-mentioned aspect when the processor executes the computer program (for example, FIG. 10 ). to the steps performed by the control circuit in any of the embodiments shown in FIG. 15).
  • Embodiments of the present disclosure provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed by a processor, the above-mentioned method embodiments (for example, any of FIG. 10 to FIG. 15 ) are implemented. the steps performed by the control circuit in an illustrated embodiment).
  • An embodiment of the present disclosure provides a computer program product containing instructions, when the computer program product is run on the computer, the computer is caused to execute the method embodiments (for example, any of FIG. 10 to FIG. 15 ) according to the above aspect. the steps performed by the control circuit in the illustrated embodiment).
  • the terms “first”, “second”, “third”, “fourth”, “fifth”, “sixth”, “seventh” and “eighth” are only used for describe purpose and should not be construed as indicating or implying relative importance.
  • the meaning of the term “plurality” in the embodiments of the present disclosure refers to two or more.
  • the term “and/or” in this embodiment of the present disclosure is only an association relationship for describing associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists alone, and A and B exist simultaneously , there are three cases of B alone.

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Abstract

本申请公开了一种投影设备及其控制方法，属于投影显示领域。投影设备的主板用于将视频图像信号发送至显示板；显示板用于根据视频图像信号生成光阀控制信号，光阀接收所述光源发出的光束，并受控于光阀控制信号对光束进行调制；控制电路分别与主板、显示板连接。控制电路用于若检测到强制关机操作，则控制所述光阀复位后再重启，或者，保持显示板的运行状态，不对光阀进行重启。

Description

投影设备及其控制方法
相关申请的交叉引用
本申请要求在2020年11月10日提交中国专利局、申请号为202011248205.3，发明名称为投影设备及其控制方法、以及在2020年11月10日提交中国专利局、申请号为202011247566.6，发明名称为投影设备及其控制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，特别涉及一种投影设备及其控制方法。
背景技术
投影设备可以包括主板与该主板连接的电源板。该电源板可以为主板和该投影设备中的其他器件供电。该主板可以响应于关机指令，控制电源板停止为主板中的部分器件和投影设备中的其他器件供电，由此实现将投影设备关机，之后该主板可以响应于开机指令，控制电源板为投影设备中的所有器件供电，由此实现将投影设备重启。
相关技术中，当主板死机时，其无法检测或无法响应关机指令。此时，用户只能拔掉投影设备的电源，并在为投影设备重新插上电源后，重新启动投影设备，以实现重启主板。
但是，由于在主板死机后，投影设备中的其他器件可能还处于工作状态中，因此用户通过拔掉电源的方式来重启主板，可能会对投影设备中的精密器件，比如光阀造成损伤。
发明内容
本申请公开一种投影设备，采用如下技术方案：
一种投影设备，包括：主板、显示板、光阀、光源、投影镜头、控制电路以及与所述光阀连接的光阀供电电路；
所述主板与所述显示板连接，所述主板用于将图像信号发送至所述显示板；
所述显示板还与所述光阀连接，所述显示板用于根据所述图像信号生成光阀控制信号，并根据所述光阀控制信号控制所述光阀翻转，以将所述光源发射的光束传输至所述投影镜头；所述投影镜头用于将所述光束投影成像；
所述控制电路分别与所述主板、所述显示板和所述光阀供电电路连接，所述控制电路用于：若检测到强制关机操作，则分别检测所述主板和所述显示板是否处于死机状态；
若检测到所述主板处于死机状态，且所述显示板未处于死机状态，则控制所述光阀复位， 并在控制所述光阀复位之后，控制所述光阀供电电路停止为所述光阀供电；
若检测到所述显示板处于死机状态，则控制所述光阀供电电路停止为所述光阀供电。
以及，还公开一种投影设备，包括：主板、显示板、光阀、光源、投影镜头和控制电路；
所述主板与所述显示板连接，所述主板用于将图像信号发送至所述显示板；
所述显示板还与所述光阀连接，所述显示板用于根据所述图像信号生成光阀控制信号，并根据所述光阀控制信号控制所述光阀翻转，以将所述光源发射的光束传输至所述投影镜头；
所述投影镜头用于将所述光束投影成像；
所述控制电路分别与所述主板和所述显示板连接，所述控制电路用于：
若检测到强制关机操作，则分别检测所述主板和所述显示板是否处于死机状态；
若检测到所述主板处于死机状态，且所述显示板未处于死机状态，则控制所述主板重启，且不调整所述显示板的运行状态。
以及，本申请还公开了一种投影设备的控制方法，应用于投影设备中，所述投影设备包括：控制电路、主板、显示板、光阀和光阀供电电路，所述控制电路分别与所述主板、所述显示板和光阀供电电路连接，所述光阀供电电路还与所述光阀连接；所述方法包括：
所述控制电路若检测到强制关机操作，则分别向所述主板和所述显示板发送探测信号；
所述控制电路若检测到在第一通信时长内未接收到所述主板发送的响应信号，且在第二通信时长内接收到所述显示板发送的响应信号，则控制所述光阀复位，并在控制所述光阀复位之后，控制所述光阀供电电路停止为所述光阀供电；
所述控制电路若检测到在第二通信时长内未接收到所述显示板发送的响应信号，则控制所述光阀供电电路停止为所述光阀供电。
以及，还公开了一种投影设备的控制方法，应用于投影设备中，所述投影设备包括：控制电路、主板和显示板，所述控制电路分别与所述主板和所述显示板连接；所述方法包括：
所述控制电路若检测到强制关机操作，则分别向所述主板和所述显示板发送探测信号；
所述控制电路若检测到在第一通信时长内未接收到所述主板发送的响应信号，且在第二通信时长内接收到所述显示板发送的响应信号，则控制所述主板重启，且不调整所述显示板的运行状态。
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投影设备的结构示意图；
图3是本公开实施例提供的又一种投影设备的结构示意图；
图4是本公开实施例提供的再一种投影设备的结构示意图；
图5是本公开实施例提供的另一种投影设备的结构示意图；
图6是本公开实施例提供的又一种投影设备的结构示意图；
图7-1是本公开实施例提供的再一种投影设备的结构示意图；
图7-2是本公开实施例提供的又一种投影设备的结构示意图；
图8是相关技术提供的一种投影设备的结构示意图；
图9是本公开实施例提供的又一种投影设备的结构示意图；
图10是本公开实施例提供的一种投影设备的控制方法的流程图；
图11是本公开实施例提供的另一种投影设备的控制方法的流程图；
图12是本公开实施例提供的又一种投影设备的控制方法的流程图；
图13是本公开实施例提供的再一种投影设备的控制方法的流程图；
图14是本公开实施例提供的再一种投影设备的控制方法的流程图；
图15是本公开实施例提供的又一种投影设备的控制方法的流程图。
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投影设备的结构示意图。如图1所示，该投影设备可以包括：主板10、显示板20、光阀30、光源40、投影镜头50、控制电路60以及与光阀30连接的光阀供电电路70。在一实施中，该光阀30可以包括阵列排布的多个数字微镜器件(digital micro-mirror device，DMD)。该光源40可以为激光器，例如可以为蓝色激光器、红色激光器或者绿色激光器。该光源40用于发射激光光束。该控制电路60可以为微控制单元(micro controller unit，MCU)。
该主板10与显示板20连接，该主板10用于将图像信号发送至显示板20。
在一实施中，控制电路60与显示板20可以通过集成电路总线(inter integrated circuit，I2C)连接，该主板10可以通过该I2C向显示板20发送图像信号。
该显示板20还与光阀30连接，该显示板20用于根据图像信号生成光阀控制信号， 并根据光阀控制信号控制光阀30翻转，以将光源40发射的光束传输至投影镜头50。
在一实施中，显示板20可以根据图像信号中像素的像素值生成光阀控制信号，并根据该光阀控制信号控制光阀30进行翻转。该翻转后的光阀30可以将光源40照射至其表面的光束传输至投影镜头50。
该投影镜头50用于将光束投影成像。该投影镜头50用于将该光束投射至投影屏幕，由此实现在投影屏幕上显示图像。
该控制电路60分别与主板10、显示板20和光阀供电电路70连接，该控制电路60用于若检测到强制关机操作，则分别检测主板10和显示板20是否处于死机状态，若检测到主板10处于死机状态，且显示板20未处于死机状态，则控制光阀30复位，并在控制光阀30复位之后，控制光阀供电电路70停止为光阀供电30。若检测到显示板20处于死机状态，则控制光阀供电电路70停止为光阀30供电，以将光阀30中的电荷释放完毕。避免光阀30中存储的电荷驱动该光阀30发生较大角度的偏转，即使得该光阀30包括的该多个数字微镜器件会发生较大角度的偏转，由此导致任意相邻两个数字微镜器件发生碰撞，从而导致部分数字微镜器件损伤。
在本公开实施例中，该主板10可以包括系统级芯片(system of chip，SoC)，该SoC中可以安装有多个应用程序。在投影设备投影图像的过程中，若该SoC中运行的应用程序的数量较多则可能会导致主机10死机。显示板20包括的数字光处理器(digital light processing，DLP)芯片也可能会在运行的过程中发生死机，从而导致显示板20死机。
参考图2，用于控制投影设备的遥控器上可以设置有目标按钮00，和/或，投影设备的壳体上可以设置有目标按钮00。该强制关机操作可以为针对该投影设备上的目标按钮00的按压操作，或者，该强制关机操作可以是针对遥控器上的目标按钮00的按压操作。在一实施中，该目标按钮00可以为关机按钮，或者该目标按钮00可以为多个按钮，该强制关机操作可以为针对该多个按钮的组合按压操作。
假设该目标按钮00为关机按钮，则控制电路60在检测到用户针对该目标按钮00的按压操作后，可以检测该按压操作的持续时长是否大于目标时长。若检测到该按压操作的持续时长小于或等于目标时长时，则控制电路60可以确定检测到关机操作，此时控制电路60可以控制主板10执行正常的关机流程，即控制电路60可以控制主板10关闭主板10中的部分器件和投影设备中其他器件。
在一实施中，该控制电路60可以设置有第一通用输入/输出(general purpose input/output，GPIO)GPIO_1端口。若该控制电路60在该第一GPIO_1端口检测到的信号为无效电平，则控制电路60可以确定检测到用户针对该目标按钮00的按压操作。若该控 制电路60在该第一GPIO_1端口上检测到的信号为有效电平，则控制电路60可以确定未检测到用户针对该目标按钮00的按压操作。其中，该无效电平可以为低电平，该有效电平可以为高电平；或者，该无效电平可以为高电平，该有效电平可以为低电平。
示例的，若该无效电平为低电平，控制电路60在该第一GPIO_1端口上检测到的信号的电压小于0.7伏(V)。
该控制电路60还设置有第二GPIO_2端口。控制电路60可以在检测到关机操作后，通过该第二GPIO_2端口输出无效电平信号，则主板10在接收到该无效电平信号后，执行正常的关机流程。
若控制电路60检测到该按压操作的持续时长大于目标时长，则控制电路60可以确认检测到强制关机操作。此时，控制电路60可以分别检测主板10和显示板20是否处于死机状态。其中，该目标时长为控制电路60中预先存储的固定时长。
综上所述，本公开实施例提供了一种投影设备，投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。并且，在确定显示板处于死机状态时，可以控制光阀供电电路停止为光阀供电。由此，能够避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，从而延长投影设备的寿命。
在本公开实施例中，控制电路60在分别检测主板10和显示板20是否处于死机状态的过程中，控制电路60可以分别向主板10和显示板20发送探测消息。若控制电路60在第一通信时长内接收到主板10发送的响应消息，则控制电路60可以确定主板10未处于死机状态。若控制电路60在第一通信时长内未接收到主板10发送的响应消息，则控制电路60可以确定主板10处于死机状态。其中，该第一通信时长可以为控制电路60中预先存储的固定时长。
若控制电路60在第二通信时长内接收到显示板20发送的响应消息，则控制电路60可以确定显示板20未处于死机状态。若控制电路60在第二通信时长内未接收到显示板20发送的响应消息，则控制电路60可以确定显示板20处于死机状态。其中，该第二通信时长可以为控制电路60中预先存储的固定时长。
在一实施中，该控制电路60可以通过I2C分别与主板10和显示板20连接，则该控制电路60可以通过该I2C向主板10和显示板20发送探测消息，同时，该主板10和显示板20可以通过该I2C向控制电路60发送响应消息。
在本公开实施例中，控制电路60若检测到主板10处于死机状态，且显示板20未处于死机状态，则可以向显示板20发送复位指令。该显示板20可以响应于该复位指令，控 制该光阀30复位。
参考图3，该光阀30包括阵列排布的多个数字微镜器件，该多个数字微镜器件中任意相邻两个数字微镜器件之间的距离较小。在投影设备开机的过程中，该显示板20还用于控制光阀供电电路70为光阀30供电，并向光阀30传输第一目标控制信号。该第一目标控制信号用于控制该光阀30由初始位置偏转至目标位置。之后在投影设备显示图像的过程中，该显示板20通过光阀控制信号Ct控制该光阀30以该目标位置为起始位置进行偏转，该偏转后的光阀30用于将光源40传输光束传输至投影镜头50。
在控制光阀30复位的过程中，显示板20向光阀30发送第二目标控制信号，该第二目标控制信号用于控制光阀30偏转至初始位置。之后显示板20控制光阀供电电路70停止为光阀30供电，以使光阀30将其存储的电荷释放完毕。
若在显示板20处于断电状态之前显示板20未控制光阀30复位，则控制电路60控制显示板20断电后，光阀供电电路70停止为光阀30供电，此时光阀30未偏转至初始位置，且光阀30中存储的电荷未释放完成。则该光阀30中存储的电荷会驱动该光阀30发生较大角度的偏转，即该光阀30包括的该多个数字微镜器件会发生较大角度的偏转，由此导致任意相邻两个数字微镜器件发生碰撞，从而导致部分数字微镜器件损伤。
在本公开实施例中，控制电路20若检测到主板10处于死机状态，且显示板20未处于死机状态，通过向显示板20发送复位指令，以使得在控制显示板20处于断电状态之前先控制该光阀30复位，并控制光阀供电电路70停止为光阀30供电。由此避免出现显示板20断电后未对光阀30进行复位，或者光阀30中存储的电荷未释放完成而导致光阀30损坏的情况，确保了对光阀30控制的可靠性。
参考图4，该光阀供电电路70可以包括第一开关子电路U1、第二开关子电路U2、第三开关子电路U3、第四开关子电路U4、第一电路R1、第二电阻R2、第三电阻R3、第四电阻R4、第一电源端Vc、第二电源端Vo、第三电源端Vb、第四电源端Vr、第五电源端G1、第六电源端G2、第七电源端G3和第八电源端G4。
其中，该第一开关子电路U1的控制端与显示板20连接，该第一开关子电路U1的输入端分别与第一电阻R1的一端、第二开关子电路U2的控制端、第三开关子电路U3的控制端和第四开关子电路U4的控制端连接。该第一开关子电路U1的输出端与第五电源端G1连接，该第一电阻R1的另一端与第一电源端Vc连接。
该第二开关子电路U2的输入端与第二电阻R2的一端连接，该第二开关子电路U2的输出端与第六电源端G2连接，该第二电阻R2的另一端与第二电源端Vo的一端连接，该第二电源端Vo的另一端与光阀30连接。
该第三开关子电路U3的输入端与第三电阻R3的一端连接，该第三开关子电路U3的输出端与第七电源端G3连接，该第三电阻R3的另一端与第三电源端Vb的一端连接，该第三电源端Vb的另一端与光阀30连接。
该第四开关子电路U4的输入端与第四电阻R4的一端连接，该第四开关子电路U4的输出端与第八电源端G4连接，该第四电阻R4的另一端与第四电源端Vr的一端连接，该第四电源端Vr的另一端与光阀30连接。
在一实施中，该第一电源端Vc、第二电源端Vo、第三电源端Vb和第四电源端Vr为可以均为直流电源端，该第五电源端G1、第六电源端G2、第七电源端G3和第八电源端G4可以均为地端(ground，GND)。
参考图3和图4，在投影设备投影显示图像的过程中，该显示板20向光阀供电电路70输出使能信号EN，该第一开关子电路U1在该使能信号为有效电平时导通。此时第一电源端Vc提供的电源信号经第一电阻R1后，该一部分信号经第一开关子电路U1传输至第五电源端G1。该另一部分信号传输至第二开关子电路U2的控制端、第三开关子电路U3的控制端和第四开关子电路U4的控制端传输电源信号。
由于该另一部分信号的电压较低，因此该第二开关子电路U2、第三开关子电路U3和第四开关子电路U4在该另一部分信号的控制下断开。此时第二开关子电路U2、第三开关子电路U3和第四开关子电路U4不导通，该第二电源端Vo、第三电源端Vb和第四电源端Vr分别向光阀30传输电源信号，由此实现向光阀30供电。同时，显示板20向光阀30传输光阀控制信号Ct，以实现控制光阀30偏转。
其中，该第二电源端Vo向光阀30传输的电源信号的电压可以为V1，第三电源端Vb向光阀30传输的电源信号的电压为V2，该第四电源端Vr向光阀30传输的电源信号的电压为V3。
显示板20在控制光阀30复位的过程中，显示板20先向光阀30传输第二目标控制信号，该光阀30在该第二目标控制信号的控制下恢复至初始位置。之后，显示板20在控制光阀供电电路70停止为光阀30供电的过程中，显示板20向第一开关子电路U1的控制端传输处于无效电平的使能信号EN，此时第一开关子电路U1断开。该第一电源端Vc传输的电源信号经第一电阻R1后传输至第二开关子电路U2的控制端、第三开关子电路U3的控制端和第四开关子电路U4的控制端。
由于第一开关子电路U1断开，该第一开关子电路U1不会分压，因此传输至第二开关子电路U2、第三开关子电路U3和第四开关子电路U4的电源信号的电压较高，则该第二开关子电路U2、第三开关子电路U3和第四开关子电路U4在该电源信号的控制下导通。 此时，光阀30中存储的电荷和第二电源端Vo提供的电源信号经第二电阻R2和第二开关子电路U2传输至第六电源端G2。光阀30中存储的电荷和第三电源端Vb提供的电源信号经第三电阻R3和第三开关子电路U3传输至第七电源端G3。光阀30中存储的电荷和第四电源端Vr提供的电源信号经第四电阻R4和第四开关子电路U4传输至第八电源端G4，由此实现将光阀30中存储的电荷快速释放。
参考图5，该投影设备还可以包括供电控制电路N1，该供电控制电路N1的第一输入端与控制电路60连接，该供电控制电路N1的第二输入端与显示板20连接，该供电控制电路N1的输出端与光阀供电电路70连接。在一实施中，该供电控制电路N1可以为逻辑与器件。
该控制电路60还用于向供电控制电路N1发送第一控制信号。该显示板20，还用于向供电控制电路N1发送使能信号EN，在显示板20处于通电状态下，该使能信号EN为有效电平，在显示板20处于断电状态下，该使能信号EN为无效电平。
在一实施中，该控制电路60上还设置有第三GPIO_3端口，该控制电路60可以通过该第三GPIO_3端口向供电控制电路N1发送第一控制信号。
该供电控制电路N1用于在第一控制信号和使能信号EN中的任一信号为无效电平时，控制光阀供电电路70停止为光阀30供电，以及该供电控制电路N1用于在该第一控制信号和使能信号EN均为有效电平时，控制光阀供电电路70为光阀30供电。
在该显示板20处于死机状态时，该第一控制信号为无效电平。在该主板10处于死机状态，且该显示板20未处于死机状态时，该第一控制信号为无效电平。
在本公开实施例中，该控制电路60还用于若检测到主板10和/或显示板20处于死机状态，则控制主板10和显示板20中处于死机状态的电路板重启。
参考图5，该投影设备还可以包括第一开关SW1、第二开关SW2和电源板80。该第一开关SW1的控制端与控制电路60连接，该第一开关SW1的输入端与电源板80连接，该第一开关SW1的输出端与主板10连接。
该第二开关SW2的控制端与控制电路60和/或主板10连接，该第二开关SW2的输入端与电源板80连接，该第二开关SW2的输出端与显示板20连接。
参考图5，该第二开关SW2的控制端与该主板10连接。或者，参考图6，该第二开关SW2的控制端与控制电路60连接。或者，参考图7-1，该第二开关SW2的控制端与控制电路60和主板10连接。
该控制电路60用于若检测到主板10处于死机状态，则控制该第一开关SW1断开，并在断开该第一开关SW1第一时长后，控制该第一开关SW1闭合。其中，该第一时长为 控制电路60中预先存储的固定时长。
在本公开实施例中，控制电路60在控制第一开关SW1断开后，该电源板80停止为主板10提供电源信号，由此使得主板10处于断电状态。控制电路60在控制第一开关SW1闭合之后，该电源板80可以为该主板10提供电源信号，由此使得主板10处于通电状态。该控制电路60通过先控制第一开关SW1断开，再控制该第一开关SW1闭合，以实现先控制主板10处于断电状态再控制主板10处于通电状态，由此实现对主板10的重启。
该控制电路60用于若检测到显示板20处于死机状态，则控制第二开关SW2断开，并在断开第二开关SW2第二时长后，控制第二开关SW2闭合。其中，该第二时长为控制电路60中预先存储的固定时长。
在本公开实施例中，该控制电路60在控制第二开关SW2断开后，该电源板80停止为显示板20提供电源信号，由此使得显示板20处于断电状态。控制电路60在控制第二开关SW2闭合之后，该电源板80可以为该显示板20提供电源信号，由此使得显示板20处于通电状态。该控制电路60通过先控制第二开关SW2断开，再控制该第二开关SW2闭合，以实现先控制显示板20处于断电状态再控制显示板20处于通电状态，由此实现对显示板20的重启。
在本公开实施例中，在主机10处于死机状态，且该显示板20未处于死机状态时，该控制电路60可以分别控制主板10和显示板20重启，或者也可以仅控制主板10重启。
若控制电路60分别控制主板10和显示板20重启，则该控制电路60还用于若检测到主板10处于死机状态，且显示板20未处于死机状态，则向显示板20发送复位指令。该显示板20可以在响应于该复位指令，控制该光阀30复位。之后显示板20在控制光阀30复位后，向控制电路60发送复位确认信息。控制电路60用于在接收到该复位确认信息后，控制光阀供电电路70停止为光阀30供电。之后再控制第一开关SW1断开，并在断开第一开关SW1第一时长后，开启第一开关SW1闭合。
在一实施中，该显示板20上设置有第四GPIO_4端口，显示板20可以通过该第四GPIO_4端口向控制电路60发送复位确认信息。
对于主机10处于死机状态，且该显示板20未处于死机状态，控制电路60在控制光阀供电电路70停止为光阀30供电后分别控制主板10和显示板20重启的场景，作为本公开实施例一种在一实施中实现方式，参考图5，该第二开关SW2的控制端与主板10连接。该主板10用于在通电状态下，控制该第二开关SW2闭合，并且，在主板10处于断电状态时，该第二开关SW2断开。
在该主板10处于通电状态下时，由于该第二开关SW2闭合，因此电源板80为显示 板20提供电源信号，此时显示板20处于通电状态。在该主板10处于断电状态时，由于该第二开关SW2断开，因此电源板80停止为显示板20提供电源信号，此时显示板20处于断电状态。
在本公开实施例中，控制电路60在控制光阀供电电路70停止为光阀30供电后，通过先断开第一开关SW1，使得主板10和显示板20均处于断电状态。之后控制电路60再控制第一开关SW1闭合，使得主板10和显示板处于通电状态，由此实现对控制电路60分别控制主板10和显示板20重启。
对于主机10处于死机状态，且该显示板20未处于死机状态，控制电路60在控制光阀供电电路70停止为光阀30供电后分别控制主板10和显示板20重启的场景，作为本公开实施例另一种在一实施中实现方式，参考图7-1，该投影设备还可以包括开关控制电路N2。该开关控制电路N2的第一输入端与该控制电路60连接，该开关控制电路N2的第二输入端与主板10连接，该开关控制电路N2的输出端与第二开关SW2的控制端连接，由此实现该第二开关SW2的控制端与主板10和控制电路60连接。在一实施中，参考图7-1，该开关控制电路N2可以为逻辑或器件。
该控制电路60还用于向该开关控制电路N2发送第二控制信号，该主板10用于向开关控制电路N2发送第三控制信号。该开关控制电路N2用于若检测到该第二控制信号为有效电平，和/或，该第三控制信号为有效电平，则控制第二开关SW2闭合。该开关控制电路N2用于若检测到第二控制信号和第三控制信号均为无效电平，则控制第二开关SW2断开。
在一实施中，控制电路60在控制光阀供电电路70停止为光阀30供电后，向开关控制电路N2发送的第二控制信号的电平为无效电平。主板10在处于死机状态和断电状态时，主板10向该开关控制电路N2发送的第三控制信号的电平为无效电平。
在本公开实施例中，控制电路60在控制光阀供电电路70停止为光阀30供电后并向开关控制电路N2发送处于无效电平的第二控制信号后，控制电路60可以先控制主板10处于断电状态，再控制显示板20处于断电状态。之后控制电路60可以控制主板10和显示板20处于通电状态。
由于主板10处于断电状态后，第三控制信号为无效电平，且第二控制信号的电平为无效电平，因此该开关控制电路N2可以控制第二开关SW2断开，此时该显示板20也处于断电状态。
本公开实施例对控制电路60控制主板10和显示板20处于通电状态的顺序不做限定。例如，控制电路60先控制主板10处于通电状态，再控制显示板20处于通电状态。在一 实施中，控制电路60可以先控制第一开关SW1闭合，以控制主板10处于通电状态。之后控制电路60可以向主板10发送开关闭合指令，和/或，控制电路60向第一开关信号，该第一开关信号为有效电平或者无效电平。该主板10可以响应于该开关开启指令，向开关控制电路N2发送的处于有效电平的第三控制信号，以使得该开关控制电路N2控制第二开关SW2闭合，由此实现显示板20处于通电状态。
或者，控制电路60先控制显示板20处于通电状态，再控制主板10处于通电状态。在一实施中，控制电路60可以向开关控制电路N2发送处于有效电平的第二控制信号，以使得该开关控制电路N2控制第二开关SW2闭合，由此实现显示板20处于通电状态。之后控制电路20可以控制第一开关SW1闭合，以控制主板10处于通电状态。
或者，控制电路60可以同时控制主板10和显示板20处于通电状态。在一实施中，控制电路60可以在控制第一开关SW1闭合的同时，向开关控制电路N2发送处于有效电平的第二控制信号。
在一实施中，该控制电路60上还设置有第五GPIO_5端口，该控制电路60可以通过该第五GPIO_5端口向开关控制电路N2发送第二控制信号。主板10上可以设置有第六GPIO_6端口，该主板10可以通过该第六GPIO_6端口向开关控制电路N2发送第三控制信号。
参考图7-1，控制电路60若检测到显示板20处于死机状态，且主板10未处于死机状态，则控制电路60可以先控制光阀供电电路70停止为光阀30供电。之后控制电路60可以控制显示板20重启。在控制显示板20重启的过程中，控制电路60可以仅控制显示板20重启，也可以分别控制显示板20和主板10重启，本公开实施例对此不做限定。
以及，图7-2提供了又一种投影设备的结构示意图。
与图7-1示例不同之处在于，参见图7-2，该投影设备中，光阀供电电路70仅接收来自显示板20的EN使能控制信号。
以及，与图7-1图示例不同的是，图7-2示例中，该控制电路60可以在仅控制主板10重启的过程中，向该开关控制电路N2发送处于有效电平的第二控制信号，由此确保在主板10处于断电状态时，该开关控制电路N2可以控制第二开关SW2闭合，进而确保该显示板20处于通电状态。显示板20还用于在上述的通电状态下，在投影屏幕上显示提示信息，该提示信息用于提示主板10正在重启。
以及，显示板20在显示提示信息的同时还用于向控制电路60发送确认信息，该控制电路60用于在接收到提示确认信息后，控制主板10重启。且通过控制显示板20在投影屏幕上显示提示信息，以使得用户获知主板10当前正在重启，避免出现主板10在重启的 过程中用户直接拔掉电源的情况，由此确保对投影设备控制的可靠性。
在一实施中，该控制电路60可以通过I2C向显示板20发送提示指令。该显示板20也可以通过I2C向控制电路60发送提示确认信息。
在本申请实施例中，控制电路60在控制主板10重启后，该主板10可以向显示板10发送视频图像信号，以使得显示板20显示投影图像而不再显示提示信息。
因此，在上述图7-2所示的实施例中，当控制电路60接收外部的强制关机操作指令后，也可以不向显示板20发送复位信号，而是通过控制信号保证显示板20具有正常的供电状态，而不因主板10的断电而发生断电，从而也避免了光阀30的突然断电情况，保证光阀30工作的可靠性。
以上示例中，对于控制电路60在检测到显示板20处于死机状态，且主板10未处于死机状态时，控制电路60可以仅控制显示板20重启的场景。作为一种在一实施中实现方式，参考图7-1，控制电路60可以向主板10发送开关断开指令，该主板10可以响应于该开关断开指令，向开关控制电路N2发送处于无效电平的第三控制信号。同时，控制电路60也向该开关控制电路N2发送处于无效电平的第二控制信号。该开关控制电路N2进而可以响应于该第二控制信号和该第三控制信号，控制第二开关SW2断开，由此使得显示板20处于断电状态。
之后，在该第二开关SW2断开第二时长后，控制电路40可以向主板10发送开关闭合指令，该主板10可以响应于该开关闭合指令，向开关控制电路N2发送处于有效电平的第三控制信号。并且，此时该控制电路60向该开关控制电路N2发送的第二控制信号的电平可以为无效电平，也可以为有效电平。该开关控制电路N2可以在该第二控制信号和第三控制信号的控制下，控制第二开关SW2闭合，由此使得显示板20处于通电状态，实现对显示板20重启。或者，在该第二开关SW2断开第二时长后，控制电路40可以向该开关控制电路N2发送处于有效电平的第二控制信号的电平。该开关控制电路N2可以在该第二控制信号的控制下，控制第二开关SW2闭合，由此使得显示板20处于通电状态，实现对显示板20重启。
对于控制电路60在检测到显示板20处于死机状态，且主板10未处于死机状态时，控制电路60仅控制显示板20重启的场景，作为另一种在一实施中实现方式，参考图5，控制电路60可以向主板10发送开关断开指令。该主板10可以响应于该开关断开指令，控制第二开关SW2断开，由此使得显示板20处于断开状态。之后，在第二开关SW2断开第二时长后，控制电路40可以向主板10发送开关闭合指令，该主板10可以响应于该开关闭合指令，控制第二开关SW2闭合，由此实现对显示板20重启。
控制电路60在检测到显示板20处于死机状态，且主板10未处于死机状态时，控制电路60还可以分别控制主板10和显示板20重启。在一实施中，控制电路20可以先控制主板10和显示板20处于断电状态，再控制主板10和显示板20处于通电状态。
在本公开实施例对控制电路60控制主板10和显示板20处于断电状态的顺序，以及控制电路60控制主板10和显示板20处于通电状态的顺序不做限定。
例如，控制电路60可以先控制显示板20处于断电状态，之后再控制主板10处于断电状态。之后控制电路60可以控制主板10处于通电状态，再在控制显示板20处于通电状态，由此实现主板10和显示板20重启。对于控制电路60控制显示板20处于通电状态和断电状态的过程，以及控制电路60控制主板10处于通电状态和断电状态的过程可以参考上述实施例，本公开实施例再此不再赘述。
在本公开实施例中，若主板10和显示板20均处于死机状态，则控制电路60还用于先控制光阀供电电路70停止为光阀30供电，之后分别控制主板10和显示板20重启，对于控制电路60控制主板10和显示板20重启的过程可以参考上述实施例，本公开实施例再此不再赘述。
在一实施中，参考图5和图7-1，控制电路60可以分别控制主板10处于断电状态，之后控制主板10处于通电状态，之后再控制显示板20处于通电状态。
在本公开实施例中，控制电路60在控制主板10和显示板20处于断电状态后，还可以关闭光源40，由此避免投影屏幕未显示图像时投影镜头将激光光束投射至投影屏幕，确保显示效果。
或者，控制电路60还输出用于控制显示板20供电的控制信号，当控制电路60在对主板10进行断电和通电的过程中，该控制信号保持显示板20的正常供电，使得显示板20不受主板10通、断电的影响，从而光阀也不会突然中断供电，保障了光阀的可靠运行。
相关技术中，参考图8，投影设备可以包括主板1、显示板2、电源板3、光阀4、供电电路5和开关SW。其中，该电源板3分别与该主板1和显示板2连接，该显示板2分别与光阀4和供电电路5连接。该开关SW的控制端与主板1连接，该开关SW输入端与电源板3连接，该开关SW的输出端与显示板2连接。该电源板3可以为主板1、显示板2和该投影设备中的其他器件供电，该供电电路5用于为光阀4供电。
在投影设备正常关机过程中，该主板1在检测到用户针对关机按钮0的点击指令后，可以生成关机指令。并可以将该关机指令发送至显示板2，该显示板2可以响应于该关机指令控制光阀4偏转至初始位置，并控制该供电电路5停止为光阀4供电。之后显示板2可以向主板1发送确认指令，主板1可以响应于该确认指令，控制电源板3停止为主板1 中的部分器件、显示板2和投影设备中的其他器件供电，由此实现将投影设备关机，之后该主板1可以响应于开机指令，控制电源板3为投影设备中的所有器件供电，由此实现将投影设备重启。
相关技术中，当主板1死机时，其无法检测或无法响应关机指令。此时，用户只能拔掉投影设备的电源，并在为投影设备重新插上电源后，重新启动投影设备，以实现重启主板1。但是，由于在主板1死机后，投影设备中的其他器件可能还处于工作状态中，因此用户通过拔掉电源的方式来重启主板，可能会对投影设备中的光阀造成损伤。
而本公开实施例中，由于该投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。在确定显示板处于死机状态时，可以控制光阀供电电路停止为光阀供电。或者，控制电路还输出用于控制显示板供电的控制信号，当控制电路在对主板进行断电和通电的过程中，该控制信号保持显示板的正常供电，使得显示板不受主板通、断电的影响，从而光阀也不会突然中断供电，保障了光阀的可靠运行。上述技术手段均可以避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，确保了对投影设备操作的可靠性。
综上所述，本公开实施例提供了一种投影设备，投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。并且，该控制电路可以在确定显示板处于死机状态时，控制光阀供电电路停止为光阀供电。
或者，当主板死机而显示板未死机时，可以仅对主板进行重启，而保持显示板的供电，避免了光阀的突然断电，由此，能够避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，从而延长投影设备的寿命。
图9是本公开实施例提供的再一种投影设备的结构示意图。如图9所示，该投影设备可以包括主板10、显示板20、光阀30、光源40、投影镜头50和控制电路60。
该主板10与显示板20连接，该主板10用于将图像信号发送至显示板20；
该显示板20还与光阀30连接，该显示板20用于根据图像信号生成光阀控制信号，并根据光阀控制信号控制光阀30翻转，以将光源40发射的光束传输至投影镜头50。投影镜头50用于将光束投影成像。
该控制电路60分别与主板10和显示板20连接，该控制电路60用于若检测到强制关机操作，则分别检测主板10和显示板20是否处于死机状态。若检测到主板10处于死机状态，且显示板20未处于死机状态，则控制主板10重启，且不调整显示板20的运行状态。
综上所述，本公开实施例提供了一种投影设备，该投影设备中的控制电路在检测到强制关机操作时，若确定主板处于死机状态，且显示板未处于死机状态，则可以控制主板重启。由此避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的器件损坏的情况，确保了对投影设备操作的可靠性。
在主机10处于死机状态，且该显示板20未处于死机状态时，若主控电路60仅控制主板10重启，则该主控电路60还用于若检测到主板10处于死机状态，且显示板20未处于死机状态，则向显示板20发送提示指令。该显示板20还用于响应于该提示指令，在投影屏幕上显示提示信息，并向主控电路60发送提示确认信息，该提示信息用于提示主板10正在重启。该主控电路60用于在接收到提示确认信息后，控制主板10重启。
参考图7-1，该主控电路60在仅控制主板10重启的过程中，主控电路60向该开关控制电路N1发送处于有效电平的第二控制信号，由此确保在主板10处于断电状态时，该开关控制电路N1可以控制第二开关SW2闭合，进而确保该显示板20处于通电状态。且通过控制显示板20在投影屏幕上显示提示信息，以使得用户获知主板10当前正在重启，避免出现主板10在重启的过程中用户直接拔掉电源的情况，由此确保对投影设备控制的可靠性。
在一实施中，该主控电路60可以通过I2C向显示板20发送提示指令。该显示板20也可以通过I2C向主控电路60发送提示确认信息。
在本公开实施例中，主控电路60在控制主板10重启后，该主板10可以向显示板10发送图像信号，以使得显示板20显示图像。
综上所述，本公开的实施例提供了一种投影设备，投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。并且，该控制电路可以在确定显示板处于死机状态时，控制光阀供电电路停止为光阀供电。由此，能够避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，从而延长投影设备的寿命。
以及，本公开的实施例还提供了一种投影设备，该投影设备中的控制电路在检测到强制关机操作时，若确定主板处于死机状态，则保持显示板的供电状态，并由显示板进行主板正在重启的提示，且主控电路在收到显示板的提示确认信息后，对主板进行断电重启。由此避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的器件损坏的情况，并且上述实施例中，显示板并不断电，从而也避免了光阀遭遇突然断电的情形，确保了对投影设备操作的可靠性。
图10是本公开实施例提供的一种投影设备的控制方法的流程图，应用于图1、图2、 图5至图7-1任一所示的投影设备中，如图10所示，该方法可以包括：
步骤1001、控制电路若检测到强制关机操作，则分别向主板和显示板发送探测信号。
步骤1002、控制电路若检测到在第一通信时长内未接收到主板发送的响应信号，且在第二通信时长内接收到显示板发送的响应信号，则控制光阀复位，并在控制光阀复位之后，控制光阀供电电路停止为光阀供电。
步骤1003、控制电路若检测到在第二通信时长内未接收到显示板发送的响应信号，则控制光阀供电电路停止为光阀供电。
综上所述，本公开实施例提供了一种投影设备的控制方法，投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。并且，该控制电路可以在确定显示板处于死机状态时，控制光阀供电电路停止为光阀供电。由此，能够避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，从而延长投影设备的寿命。
图11是本公开实施例提供的一种投影设备的控制方法的流程图，该方法可以应用于图1、图2、图5至图7-1所示的投影设备中。如图11所示，该方法可以包括：
步骤1101、控制电路若检测到强制关机操作，则分别向主板和显示板发送探测信号。
步骤1102、控制电路若检测到在第一通信时长内未接收到主板发送的响应信号，且在第二通信时长内接收到显示板发送的响应信号，则向显示板发送复位指令。
步骤1103、显示板响应于复位指令，控制光阀复位。
步骤1104、控制电路向供电控制电路发送处于无效电平的第一控制信号。
步骤1105、显示板向供电控制电路发送处于有效电平的使能信号。
步骤1106、供电控制电路在处于无效电平的第一控制信号和处于有效电平的使能信号的控制下，控制光阀供电电路停止为光阀供电。
步骤1107、控制电路控制主板重启。
上述步骤1101至步骤1107的实现过程可以参考上述装置实施例，本公开实施例在此不再赘述。
综上所述，本公开实施例提供了一种投影设备的控制方法，投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。并且，该控制电路可以在确定显示板处于死机状态时，控制光阀供电电路停止为光阀供电。由此，能够避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，从而延长投影设备的寿命。
图12是本公开实施例提供的一种投影设备的控制方法的流程图，该方法可以应用于如图1、图2、图5至图7-1任一所示的投影设备中。如图12所示，该方法可以包括：
步骤1201、控制电路若检测到强制关机操作，则分别向主板和显示板发送探测信号。
步骤1202、控制电路若在第二通信时长内未接收到显示板发送的响应信号，则向供电控制电路发送处于无效电平的第一控制信号。
步骤1203、显示板向供电控制电路发送处于有效电平的使能信号。
其中，在显示板处于通电状态下，使能信号为有效电平，在显示板处于断电状态下，使能信号为无效电平。
步骤1204、供电控制电路在第一控制信号和使能信号中的任一信号为无效电平时，控制光阀供电电路停止为光阀供电。
在一实施中，投影设备还包括供电控制电路。供电控制电路的第一输入端与控制电路连接，供电控制电路的第二输入端与显示板连接，供电控制电路的输出端与光阀供电电路连接。控制电路还向供电控制电路发送第三控制信号。
步骤1205、控制电路控制显示板重启。
上述步骤1201至步骤1205的实现过程可以参考上述装置实施例，本公开实施例在此不再赘述。
综上所述，本公开实施例提供了一种投影设备的控制方法，投影设备中的控制电路在确定主板处于死机状态，且显示板未处于死机状态时，可以先控制光阀复位，再控制光阀供电电路停止为光阀供电。并且，该控制电路可以在确定显示板处于死机状态时，控制光阀供电电路停止为光阀供电。由此，能够避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的光阀损坏的情况，从而延长投影设备的寿命。
图13是本公开实施例提供的一种投影设备的控制方法的流程图，该方法可以应用于如图7-1所示的投影设备中。如图13所示，该方法可以包括：
步骤1301、控制电路若检测到强制关机操作，则分别向主板和显示板发送探测信号。
步骤1302、控制电路若检测到在第一通信时长内未接收到主板发送的响应信号，且在第二通信时长内接收到显示板发送的响应信号，则控制主板重启，且不调整显示板的运行状态。
上述步骤1301至步骤1302的实现过程可以参考上述装置实施例，本公开实施例在此不再赘述。
综上所述，本公开实施例提供了一种投影设备的控制方法，该投影设备中的控制电路 在检测到强制关机操作时，若确定主板处于死机状态，且显示板未处于死机状态，则可以控制主板重启。由此避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的器件损坏的情况，从而延长投影设备的寿命。
图14是本公开实施例提供的又一种投影设备的控制方法的流程图，该方法可以应用于图7-1所示的投影设备中。如图14所示，该方法可以包括：
步骤1401、控制电路若检测到强制关机操作，则分别检测主板和显示板是否处于死机状态。
步骤1402、控制电路若检测到在第一通信时长内未接收到主板发送的响应信号，且在第二通信时长内接收到显示板发送的响应信号，则向显示板发送提示指令。
步骤1403、显示板响应于提示指令，在投影屏幕上显示提示信息，并向控制电路发送提示确认信息。
其中，该提示信息用于提示主板正在重启。
步骤1404、控制电路在接收到提示确认信息后，控制主板重启。
上述步骤1401至步骤1404的实现过程可以参考上述装置实施例，本公开实施例在此不再赘述。
综上所述，本公开实施例提供了一种投影设备的控制方法，该投影设备中的控制电路在检测到强制关机操作时，若确定主板处于死机状态，且显示板未处于死机状态，则可以控制主板重启。由此避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的器件损坏的情况，从而延长投影设备的寿命。
以及，图15是本申请实施例提供的又一种投影设备的控制方法的流程图，该方法可以应用于图7-1或图7-2所示的投影设备中。如图15所示，该方法可以包括：
步骤1501、控制电路若检测到强制关机操作，则检测主板是否处于死机状态。
步骤1502、控制电路若检测到主板处于死机状态，则向显示板发送提示指令，并控制显示板处于通电状态。
具体地，如图7-1中，控制电路通过输出控制信号至第二开关SW1，使得第二开关SW1处于连通电源板的有效状态，从而保证显示板处于通电状态。
或者如图7-2中，控制电路输出控制信号与主板输出的控制信号相或后作为显示板供电的开关控制信号。具体地，第二开关SW2的控制端与控制电路和主板均连接，第二开关的输入端与电源板连接，该第二开关的输出端与显示板连接。
步骤1503、显示板响应于提示指令，在投影屏幕上显示提示信息，并向控制电路发送提示确认信息。
其中，该提示信息用于提示主板正在重启。
步骤1504、控制电路在接收到提示确认信息后，控制断开主板的供电。
以及，上述方法还可以包括：
步骤1505：断开主板供电预设时长后，恢复主板供电。
本公开实施例提供了一种投影设备的控制方法，该投影设备中的控制电路在检测到强制关机操作时，若确定主板处于死机状态，则保持显示板的供电状态，并由显示板进行主板正在重启的提示，且主控电路在收到显示板的提示确认信息后，对主板进行断电重启。由此避免出现用户直接拔掉电源对投影设备进行重启而导致投影设备中的器件损坏的情况，并且上述实施例中，显示板并不断电，从而也避免了光阀遭遇突然断电的情形，确保了对投影设备操作的可靠性。
需要说明的是，本申请实施例提供的投影设备的控制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，上述步骤1102至步骤1107可以根据情况删除。或者步骤1202至步骤1205可以根据情况删除。或者步骤1302可以根据情况删除。或者步骤1402至步骤1403可以根据情况删除。任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。
本公开实施例提供了一种激光投影设备，包括：存储器，处理器及存储在所述存储器上的计算机程序，所述处理器执行所述计算机程序时实现如上述方面方法实施例(例如图10至图15任一所示的实施例)中由控制电路执行的步骤。
本公开实施例提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令被处理器执行时实现如上述方面方法实施例(例如图10至图15任一所示的实施例)中由控制电路执行的步骤。
本公开实施例提供了一种包含指令的计算机程序产品，当所述计算机程序产品在所述计算机上运行时，使得所述计算机执行如上述方面方法实施例(例如图10至图15任一所示的实施例)中由控制电路执行的步骤。
在本公开实施例中，术语“第一”、“第二”、“第三”、“第四”、“第五”、“第六”、“第七”和“第八”仅用于描述目的，而不能理解为指示或暗示相对重要性。本公开实施例中术语“多个”的含义是指两个或两个以上。本公开实施例中术语“和/或”，仅仅是一种描述 关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
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 (16)

  1. 一种投影设备，其特征在于，所述投影设备包括：主板、显示板、光阀、光源、投影镜头、控制电路以及与所述光阀连接的光阀供电电路；
    所述主板与所述显示板连接，所述主板用于将图像信号发送至所述显示板；
    所述显示板还与所述光阀连接，所述显示板用于根据所述图像信号生成光阀控制信号，并根据所述光阀控制信号控制所述光阀翻转，以将所述光源发射的光束传输至所述投影镜头；
    所述投影镜头用于将所述光束投影成像；
    所述控制电路分别与所述主板、所述显示板和所述光阀供电电路连接，所述控制电路用于：
    若检测到强制关机操作，则分别检测所述主板和所述显示板是否处于死机状态；
    若检测到所述主板处于死机状态，且所述显示板未处于死机状态，则控制所述光阀复位，并在控制所述光阀复位之后，控制所述光阀供电电路停止为所述光阀供电；
    若检测到所述显示板处于死机状态，则控制所述光阀供电电路停止为所述光阀供电。
  2. 根据权利要求1所述的投影设备，其特征在于，所述控制电路，用于若检测到所述主板处于死机状态，且所述显示板未处于死机状态，则向所述显示板发送复位指令；
    所述显示板，用于响应于所述复位指令，控制所述光阀复位。
  3. 根据权利要求1所述的投影设备，其特征在于，所述投影设备还包括：供电控制电路；
    所述供电控制电路的第一输入端与所述控制电路连接，所述供电控制电路的第二输入端与所述显示板连接，所述供电控制电路的输出端与所述光阀供电电路连接；
    所述控制电路，还用于向所述供电控制电路发送第一控制信号；
    所述显示板，还用于向所述供电控制电路发送使能信号；其中，在所述显示板处于通电状态下，所述使能信号为有效电平，在所述显示板处于断电状态下，所述使能信号为无效电平；
    所述供电控制电路，用于在所述第一控制信号和所述使能信号中的任一信号为无效电平时，控制所述光阀供电电路停止为所述光阀供电，以及用于在所述第一控制信号和所述使能信号均为有效电平时，控制所述光阀供电电路为所述光阀供电。
  4. 根据权利要求1至3任一所述的投影设备，其特征在于，所述控制电路，还用于：
    若检测到所述主板和/或所述显示板处于死机状态，则控制所述主板和所述显示板中处于死机状态的电路板重启。
  5. 根据权利要求4所述的投影设备，其特征在于，所述投影设备还包括：第一开关、第二开关和电源板；
    所述第一开关的控制端与所述控制电路连接，所述第一开关的输入端与所述电源板连接，所述第一开关的输出端与所述主板连接；
    所述第二开关的控制端与所述控制电路和/或所述主板连接，所述第二开关的输入端与所述电源板连接，所述第二开关的输出端与所述显示板连接；
    所述控制电路还用于若检测到所述主板处于死机状态，则控制所述第一开关断开，并在断开所述第一开关第一时长后，控制所述第一开关闭合；
    所述控制电路还用于若检测到所述显示板处于死机状态，则控制所述第二开关断开，并在断开所述第二开关第二时长后，控制所述第二开关闭合。
  6. 根据权利要求5所述的投影设备，其特征在于，所述第二开关的控制端与所述主板连接；
    所述主板用于在通电状态下，控制所述第二开关闭合；
    并且，在所述主板处于断电状态时，所述第二开关断开。
  7. 根据权利要求5所述的投影设备，其特征在于，所述投影设备还包括：开关控制电路，所述开关控制电路的第一输入端与所述控制电路连接，所述开关控制电路的第二输入端与所述主板连接，所述开关控制电路的输出端与所述第二开关的控制端连接；
    所述控制电路，还用于向所述开关控制电路发送第二控制信号；
    所述主板，还用于向所述开关控制电路发送第三控制信号；
    所述开关控制电路，用于若检测到所述第二控制信号为有效电平，和/或，检测到所述第三控制信号为有效电平，则控制所述第二开关闭合，以及用于若检测到所述第二控制信号和所述第三控制信号均为无效电平，则控制所述第二开关断开。
  8. 一种投影设备，其特征在于，所述投影设备包括：主板、显示板、光阀、光源、投影镜头和控制电路；
    所述主板与所述显示板连接，所述主板用于将图像信号发送至所述显示板；
    所述显示板还与所述光阀连接，所述显示板用于根据所述图像信号生成光阀控制信号，并根据所述光阀控制信号控制所述光阀翻转，以将所述光源发射的光束传输至所述投影镜头；
    所述投影镜头用于将所述光束投影成像；
    所述控制电路分别与所述主板和所述显示板连接，所述控制电路用于：
    若检测到强制关机操作，则分别检测所述主板和所述显示板是否处于死机状态；
    若检测到所述主板处于死机状态，且所述显示板未处于死机状态，则控制所述主板重启，且不调整所述显示板的运行状态。
  9. 根据权利要求8所述的投影设备，其特征在于，所述控制电路，还用于若检测到所述主板处于死机状态，且所述显示板未处于死机状态，则向所述显示板发送提示指令；
    所述显示板，还用于响应于所述提示指令，在所述投影屏幕上显示提示信息，并向所述控制电路发送提示确认信息，所述提示信息用于提示所述主板正在重启；
    所述控制电路，还用于在接收到所述提示确认信息后，控制所述主板重启。
  10. 根据权利要求9所述的投影设备，其特征在于，所述投影设备还包括：电源板、开关控制电路和第二开关；所述第二开关所述开关控制电路的第一输入端与所述控制电路连接，所述开关控制电路的第二输入端与所述主板连接，所述开关控制电路的输出端与所述第二开关的控制端连接，所述第二开关的输入端与所述电源板连接，所述第二开关的输出端与所述显示板连接；
    所述控制电路，还用于向所述开关控制电路发送第二控制信号；
    所述主板，还用于向所述开关控制电路发送第三控制信号；
    所述开关控制电路，用于若检测到所述第二控制信号为有效电平，和/或，检测到所述第三控制信号为有效电平，则控制所述第二开关闭合。
  11. 一种投影设备的控制方法，其特征在于，应用于投影设备中，所述投影设备包括：控制电路、主板、显示板、光阀和光阀供电电路，所述控制电路分别与所述主板、所述显示板和光阀供电电路连接，所述光阀供电电路还与所述光阀连接；所述方法包括：
    所述控制电路若检测到强制关机操作，则分别向所述主板和所述显示板发送探测信号；
    所述控制电路若检测到在第一通信时长内未接收到所述主板发送的响应信号，且在第二通信时长内接收到所述显示板发送的响应信号，则控制所述光阀复位，并在控制所述光阀复位之后，控制所述光阀供电电路停止为所述光阀供电；
    所述控制电路若检测到在第二通信时长内未接收到所述显示板发送的响应信号，则控制所述光阀供电电路停止为所述光阀供电。
  12. 根据权利要求11所述的方法，其特征在于，所述控制所述光阀复位，包括：
    所述控制电路向所述显示板发送复位指令；
    所述显示板响应于所述复位指令，控制所述光阀复位。
  13. 根据权利要求11所述的方法，其特征在于，所述投影设备还包括：供电控制电路；所述供电控制电路的第一输入端与所述控制电路连接，所述供电控制电路的第二输入端与所述显示板连接，所述供电控制电路的输出端与所述光阀供电电路连接；
    所述控制所述光阀供电电路停止为所述光阀供电，包括：
    所述控制电路向所述供电控制电路发送第一控制信号，其中，在所述显示板处于死机状态下，所述第一控制信号为无效电平；
    所述显示板向所述供电控制电路发送使能信号；其中，在所述显示板处于断电状态下，所述使能信号为无效电平；
    所述供电控制电路在所述第一控制信号和所述使能信号的控制下，控制所述光阀供电电路停止为所述光阀供电。
  14. 根据权利要求11至13任一所述的方法，其特征在于，所述方法还包括：
    所述控制电路若检测到在第一通信时长内未接收到所述主板发送的响应信号，则控制所述主板重启；
    所述控制电路若检测到在第二通信时长内未接收到所述显示板发送的响应信号，则控制所述显示板重启。
  15. 一种投影设备的控制方法，其特征在于，应用于投影设备中，所述投影设备包括：控制电路、主板和显示板，所述控制电路分别与所述主板和所述显示板连接；所述方法包括：
    所述控制电路若检测到强制关机操作，则分别向所述主板和所述显示板发送探测信号；
    所述控制电路若检测到在第一通信时长内未接收到所述主板发送的响应信号，且在第二通信时长内接收到所述显示板发送的响应信号，则控制所述主板重启，且不调整所述显示板的运行状态。
  16. 根据权利要求15所述的方法，其特征在于，在控制所述主板重启之前，所述方法还包括：
    所述控制电路向所述显示板发送提示指令；
    所述显示板响应于所述提示指令，在所述投影屏幕上显示提示信息，并向所述控制电路发送提示确认信息，所述提示信息用于提示所述主板正在重启；
    所述控制电路在接收到所述提示确认信息后，控制所述主板重启。
PCT/CN2021/129719 2020-11-10 2021-11-10 投影设备及其控制方法 WO2022100599A1 (zh)

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