CN115695740A - Laser projection equipment and projection display method - Google Patents
Laser projection equipment and projection display method Download PDFInfo
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- CN115695740A CN115695740A CN202110825818.7A CN202110825818A CN115695740A CN 115695740 A CN115695740 A CN 115695740A CN 202110825818 A CN202110825818 A CN 202110825818A CN 115695740 A CN115695740 A CN 115695740A
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Abstract
The application discloses laser projection equipment and a projection display method, and belongs to the field of projection display. When the laser projection equipment is in a standby state, if a target object is detected to exist in a target range, a standby picture can be projected and displayed in a projection screen, so that the functions of the laser projection equipment are effectively enriched. And when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the wake-up circuit in the system-on-chip unchanged, and the power supply circuit stops supplying power to the slave control circuit in the system-on-chip. When the laser projection equipment is in a standby state, the power supply circuit does not need to supply power to the slave control circuit in the system-on-chip, so that the power consumption of the laser projection equipment in the standby state is reduced.
Description
Technical Field
The present disclosure relates to the field of projection display, and in particular, to a laser projection apparatus and a projection display method.
Background
The laser projection device may include a system-on-chip, a power board, a main control circuit, a light valve driving assembly, a light source driving assembly, and a projection screen. In the process of displaying the projection picture on the projection screen, the system-level chip can control the power panel to supply power to the main control circuit, and the main control circuit can further control the power panel to supply power to the light valve driving assembly and the light source driving assembly. In a standby state, the system-on-chip can control the power panel to stop supplying power to the main control circuit. Because the main control circuit is in the power-off state, the light valve driving component and the light source driving component are both in the power-off state. At this time, the light source driving component cannot drive the light source to emit light beams, and accordingly, a projection picture cannot be displayed on the projection screen.
However, the laser projection apparatus is relatively simple in function.
Disclosure of Invention
The embodiment of the disclosure provides a laser projection device and a projection display method, which can solve the above problems. The technical scheme is as follows:
in one aspect, a laser projection apparatus is provided, the laser projection apparatus comprising: the device comprises a detection device, a main control circuit, a wake-up circuit, a slave control circuit, a power circuit, a light valve driving component and a light source driving component; the wake-up circuit and the slave control circuit are integrated on a system level chip, and when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the master control circuit unchanged;
the detection device is used for detecting whether a target object exists in a target range, generating a detection signal based on a detection result, and sending the detection signal to the main control circuit;
the wake-up circuit is used for responding to a standby operation, sending a standby instruction to the master control circuit and controlling the power supply circuit to stop supplying power to the slave control circuit so as to stop the slave control circuit from working; when the slave control circuit is in a working state, the slave control circuit is used for sending a control instruction to the master control circuit;
the main control circuit is used for responding to the standby instruction, controlling the power supply circuit to keep the state of supplying power to the light valve driving component unchanged, controlling the power supply circuit to stop supplying power to the light source driving component, and controlling the power supply circuit to supply power to the light source driving component and send a projection signal to the light valve driving component if the target object is determined to exist in the target range based on the detection signal;
the light valve driving component is used for responding to the projection signal and displaying a standby picture to a projection screen in a projection manner in the process that the light source driving component drives the light source to emit light beams.
Optionally, the power supply circuit includes: a power panel and a first switching circuit;
the wake-up circuit is further configured to control the first switch circuit to maintain a conducting state in response to the standby operation, so that the power panel continuously supplies power to the main control circuit.
Optionally, the power circuit includes: a power panel;
the main control circuit is directly connected with the power panel.
Optionally, the power circuit includes: the power panel, the second switch circuit, the third switch circuit and the fourth switch circuit;
the wake-up circuit is used for responding to the standby operation and controlling the second switch circuit to be switched off so that the power panel stops supplying power to the slave control circuit;
the main control circuit is used for responding to the standby instruction and controlling the third switch circuit to keep a conducting state, so that the power panel continuously supplies power to the light valve driving component;
the master control circuit is used for responding to the standby instruction, controlling the fourth switch circuit to be disconnected, enabling the power panel to stop supplying power to the light source driving assembly, and controlling the fourth switch circuit to be connected if the target object exists in the target range based on the detection signal, and enabling the power panel to supply power to the light source driving assembly.
Optionally, the wake-up circuit is configured to respond to a standby operation, and if it is determined that the standby mode of the laser projection apparatus is the target mode, send a standby instruction to the master control circuit, and control the power supply circuit to stop supplying power to the slave control circuit;
the main control circuit is configured to, in response to the standby instruction, control the power supply circuit to maintain a state of supplying power to the light valve driving component and stop supplying power to the light source driving component if it is determined that the standby mode of the laser projection apparatus is the target mode, and control the power supply circuit to supply power to the light source driving component and send a projection signal to the light valve driving component if it is determined that the target object exists within the target range based on the detection signal.
Optionally, the laser projection apparatus further includes: a heat dissipating component;
the main control circuit is further used for responding to the standby instruction, controlling the power supply circuit to stop supplying power to the heat dissipation assembly, and controlling the power supply circuit to supply power to the heat dissipation assembly after determining that the target object exists in the target range based on the detection signal fed back by the detection device.
Optionally, the standby frame is a frame pre-stored in the light valve driving component.
Optionally, the detection device is located on a side surface of the host casing, and a plane where the side surface is located intersects with a plane where the projection screen is located;
or, the detection device is located on one side of the main machine shell far away from the projection screen.
Optionally, the detection device includes at least one of a millimeter wave sensor, a pyroelectric infrared sensor, and a camera.
In another aspect, a projection display method is provided, the method including:
receiving a detection signal sent by a detection device, wherein the detection signal is generated by the detection device based on a detection result of whether a target object exists in a target range;
responding to the standby instruction, controlling the power supply circuit to keep the state of supplying power to the light valve driving component unchanged;
controlling the power circuit to stop supplying power to the light source driving component;
if the target object exists in the target range based on the detection signal, controlling the power supply circuit to supply power to the light source driving assembly and sending a projection signal to the light valve driving assembly;
the wake-up circuit and the slave control circuit are integrated on a system level chip, the standby instruction is sent to the master control circuit by the wake-up circuit in response to a standby operation, and the standby operation is used for instructing the wake-up circuit to control the power supply circuit to stop supplying power to the slave control circuit so as to stop the slave control circuit from working; the slave control circuit is used for sending a control instruction to the master control circuit when in a working state; the projection signal is used for indicating the light valve driving component to project and display the standby picture to a projection screen in the process of the light source emitting the light beam.
The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:
the embodiment of the disclosure provides a laser projection device and a projection display method, when the laser projection device is in a standby state, if a main control circuit determines that a target object exists in a target range based on a detection signal, the main control circuit can control a power supply circuit to supply power to a light source driving assembly and send a projection signal to a light valve driving assembly, so that the light valve driving assembly projects and displays a standby picture to a projection screen. That is, when the laser projection device is in a standby state, if it is detected that a target object exists in the target range, the standby picture can be projected and displayed in the projection screen, so that the functions of the laser projection device are effectively enriched.
And when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the wake-up circuit in the system-on-chip unchanged, and the power supply circuit stops supplying power to the slave control circuit in the system-on-chip. When the laser projection equipment is in a standby state, the power supply circuit does not need to supply power to the slave control circuit in the system-on-chip, so that the power consumption of the laser projection equipment in the standby state is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a laser projection apparatus provided in an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of another laser projection apparatus provided in the embodiments of the present disclosure;
fig. 3 is a schematic structural diagram of another laser projection apparatus provided in an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of another laser projection apparatus provided in an embodiment of the present disclosure;
fig. 5 is a flowchart of a projection display method provided by an embodiment of the present disclosure;
fig. 6 is a flowchart of a projection display method according to an embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a laser projection apparatus provided in an embodiment of the present disclosure, and fig. 2 is a schematic structural diagram of another laser projection apparatus provided in an embodiment of the present disclosure. As shown in fig. 1 and 2, the laser projection apparatus may include a detection device 10, a master control circuit 20, a wake-up circuit 30, a slave control circuit 40, a power circuit 50, a light valve driving assembly 60, a light source driving assembly 70, and a light source 80.
The detecting device 10 is located outside the housing of the host 00, and the master control circuit 20, the wake-up circuit 30, the slave control circuit 40, the power circuit 50, the light valve driving assembly 60, the light source driving assembly 70, and the light source 80 are all located inside the housing of the host 00.
The wake-up circuit 30 and the slave control circuit 40 are integrated on the system-on-chip 01, and the power circuit 50 keeps the state of supplying power to the master control circuit 20 and the wake-up circuit 30 when the laser projection apparatus is in a standby state. That is, when the laser projection apparatus is in a standby state, the other circuits (such as the slave control circuit 40) in the system-on-chip 01 are all in an inactive state except that the wake-up circuit 30 is in an active state in the system-on-chip 01. The system-on-chip 01 is located on a main board of the laser projection device, and the main control circuit 20 and the light valve driving assembly 60 are both located on a display panel of the laser projection device. The main control circuit 20 may be a micro-controller unit (MCU), and the light valve driving component 60 may be a Digital Light Processing (DLP) component.
In the disclosed embodiment, the detection device 10 may be located on a side of the housing of the host 00, where the plane of the side intersects with the plane of the projection screen 02. Alternatively, referring to fig. 1, the detection device 10 may be located on a side of the housing of the host 00 remote from the projection screen 02. The detection device 10 may include at least one of a millimeter wave sensor, a pyroelectric infrared sensor, and a camera.
Referring to fig. 2, a detection device 10 is connected to a main control circuit 20, and the detection device 10 is configured to detect whether a target object exists within a target range, generate a detection signal based on a detection result, and transmit the detection signal to the main control circuit 20.
In one embodiment, the detection device 10 may periodically or in real time detect whether a target object exists within the target range, generate a detection signal based on the detection result, and send the detection signal to the main control circuit 20.
Wherein the detection signal is used to indicate whether a target object, which may be a person located within the detection range of the detection device 10, is present in the target range. The target range may be a detection range of the detection device 10, or the target range may be a fixed range stored in the detection device 10 in advance, and the target range is located within the detection range of the detection device 10.
The wake-up circuit 30 is connected to the slave control circuit 40 and the master control circuit 20, respectively, and the wake-up circuit 30 is configured to send a standby instruction to the master control circuit 20 in response to a standby operation and control the power supply circuit 50 to stop supplying power to the slave control circuit 40, so as to stop operating the slave control circuit 40.
The slave control circuit 40 is configured to send a control instruction to the master control circuit 20 when in an operating state. The main control circuit 20 may control the power circuit 50 to supply power to the light source driving assembly 70 and the light valve driving assembly 60 in response to the control command. Or, the control instruction may carry a projection image to be displayed, and the main control circuit 20 may send the projection image to be displayed to the light valve driving assembly 60 in response to the control instruction, so that the light valve driving assembly 60 projects and displays the projection image to be displayed on the projection screen 02.
The standby operation may be a click operation for a standby button in a remote controller for controlling the laser projection apparatus, or a click operation for a standby button on the main body 00 casing.
The main control circuit 20 is further connected to the power circuit 50, the light valve driving module 60 and the light source driving module 70, respectively. The main control circuit 20 is used for responding to the standby instruction, controlling the power circuit 50 to keep the state of supplying power to the light valve driving component 60 unchanged, and controlling the power circuit 50 to stop supplying power to the light source driving component 70. If the main control circuit 20 determines that the target object exists in the target range based on the detection signal, the power circuit 50 may be controlled to supply power to the light source driving component 70 and send a projection signal to the light valve driving component 60.
The light source driving assembly 70 is connected to the light source 80, and the light source driving assembly 70 is used for driving the light source 80 to emit light beams. The light valve driving component 60 is used for responding to the projection signal, and displaying the standby picture on the projection screen 02 in the process of emitting the light beam from the light source 80. The standby frame may be a frame pre-stored in the light valve driving component 60. For example, weather information, time information, and the like may be included in the standby screen.
Referring to fig. 2, the laser projection apparatus may further include a light valve 90 and a projection lens 100, and the light valve driving component 60 may generate a light valve control signal according to a pixel value of each pixel in the standby screen, control the light valve 90 to modulate a light beam irradiated onto a surface of the light source 80 into an image light beam based on the light valve control signal, and control the light valve 90 to transmit the image light beam to the projection lens 100 based on the light valve control signal. The projection lens 100 is used for projecting the image beam transmitted by the light valve 90 to the projection screen 02, so as to implement projection display of the standby image on the projection screen 02.
To sum up, the embodiment of the present disclosure provides a laser projection apparatus, where when the laser projection apparatus is in a standby state, if the main control circuit determines that a target object exists in a target range based on the detection signal, the main control circuit may control the power supply circuit to supply power to the light source driving component, and send a projection signal to the light valve driving component, so that the light valve driving component projects and displays a standby image to the projection screen. That is, when the laser projection device is in a standby state, if it is detected that a target object exists in the target range, the standby picture can be projected and displayed in the projection screen, so that the functions of the laser projection device are effectively enriched.
And when the laser projection device is in a standby state, the main control circuit can respond to the standby instruction, control the power supply circuit to keep the state of supplying power to the light valve driving assembly unchanged, and the power supply circuit can keep the state of supplying power to the main control circuit unchanged. That is, when the laser projection device is in the standby state, the main control circuit and the light valve driving component are both in the working state, so that when the main control circuit determines that a target object exists in the target range, the power supply circuit can be rapidly controlled to supply power to the light source driving component, and a projection signal is sent to the light valve driving component, so that the standby picture can be rapidly projected and displayed to the projection screen.
And when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the wake-up circuit in the system-on-chip unchanged, and the power supply circuit stops supplying power to the slave control circuit in the system-on-chip. When the laser projection equipment is in the standby state, the power supply circuit does not need to supply power to the slave control circuit, so that the power consumption of the laser projection equipment in the standby state is reduced.
In an embodiment of the present disclosure, the power of the laser projection device is less than 0.5 watts (W) after the laser projection device enters the standby state.
In one possible implementation, the detection device 10 may include a millimeter wave sensor, and the detection device 10 may emit a millimeter wave signal and may receive a millimeter wave signal reflected by a target object. If the target range is the detection range of the detection device 10, the detection device 10 may determine that the detection result is that the target object exists within the target range after receiving the millimeter wave signal reflected by the target object, and therefore the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object exists within the target range. The detection device 10 may determine that the detection result is that the target object does not exist within the target range when the millimeter wave signal reflected by the target object is not received, and therefore the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object does not exist within the target range.
If the target range is a fixed range stored in the detection device 10 in advance, the detection device 10 may determine the position of the target object based on the millimeter wave signal reflected by the target object and detect whether the position of the target object is within the target range. If the detection result is that the position of the target object is within the target range, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object is present within the target range. If the detection result is that the position of the target object is not within the target range, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object is not within the target range.
The position of the target object may include a target distance between the target object and the detection device 10 and an azimuth angle of the target object, among others. The detection device 10 may determine a difference signal from the received millimeter wave signal and determine a target distance between the target object and the detection device 10 from a peak frequency of the difference signal. Also, the detecting device 10 may determine the azimuth angle at the target object according to the difference between the phase angles of two adjacent difference signals.
In another possible embodiment, the detection device 10 may comprise a pyroelectric infrared sensor, which may detect infrared signals radiated by the target object. If the target range is the detection range of the detection device 10, the detection device 10 may determine that the detection result is that the target object exists within the target range after detecting the infrared signal radiated by the target object, and therefore the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object exists within the target range. The detection device 10 may determine that the detection result is that the target object does not exist within the target range when the infrared signal radiated by the target object is not detected, and therefore the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object does not exist within the target range.
If the target range is a fixed range pre-stored in the detection device 10, the detection device 10 may amplify the detected infrared signal, convert the amplified infrared signal into an electrical signal, and detect whether the amplitude of the electrical signal is greater than an amplitude threshold. If the detection result is that the amplitude of the electrical signal is greater than or equal to the amplitude threshold, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object exists in the target range. If the detection result is that the amplitude of the electrical signal is smaller than the amplitude threshold, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object is not present in the target range. Wherein the amplitude threshold may be a fixed value pre-stored in the detection device 10.
In yet another possible embodiment, the detection device 10 may include a camera, and if the target range is the detection range of the detection device 10, the detection device 10 may detect whether the target object exists in the captured image captured by the detection device. If the detection result is that the target object exists in the captured image, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object exists within the target range. If the detection result is that the target object does not exist in the captured image, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object does not exist within the target range.
If the target range is a fixed range stored in the detection device 10 in advance, the detection device 10 can detect the ratio of the area occupied by the target object in the captured image to the area of the captured image. If the ratio is greater than or equal to the ratio threshold, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object exists in the target range. If the ratio is smaller than the ratio threshold, the detection signal generated by the detection device 10 based on the detection result may be used to indicate that the target object is not present within the target range. Wherein the ratio threshold may be a fixed value pre-stored in the detection device 10.
In an alternative implementation manner of the embodiment of the present disclosure, referring to fig. 3, the power circuit 50 may include a power board 501 and a first switch circuit 502, where the first switch circuit 502 is connected to the power board 501, the main control circuit 20, and the wake-up circuit 30.
The wake-up circuit 30 is further configured to control the first switch circuit 502 to maintain a conducting state in response to a standby operation, so that the power board 501 continuously supplies power to the main control circuit 20. Thereby keeping the power supply circuit 50 in a state of supplying power to the main control circuit 20 when the laser projection apparatus is in a standby state.
The control terminal of the first switch circuit 502 is connected to the wake-up circuit 30, the input terminal of the first switch circuit 502 is connected to the power board 501, and the output terminal of the first switch circuit 502 is connected to the main control circuit 20. The first switch circuit 502 may be a switch (switch), and the wake-up circuit 30 is further configured to continuously send an enable signal with an active level to the control terminal of the first switch circuit 502 in response to a standby operation, so that the first switch circuit 502 maintains a conducting state.
The wake-up circuit 30 may be provided with a plurality of general purpose input/output (GPIO) ports. The first switch circuit 502 may be connected to a first GPIO port of a plurality of GPIO ports provided on the wake-up circuit 30.
In addition, the wake-up circuit 30 may be further connected to the main control circuit 20 through a second GPIO port of the plurality of GPIO ports, and transmit a standby instruction to the main control circuit 20 through the second GPIO port.
In another optional implementation manner of the embodiment of the present disclosure, referring to fig. 4, the main control circuit 20 is directly connected to the power board 501, so that when the laser projection apparatus is in a standby state, the power board 501 may continuously supply power to the main control circuit 20.
In the embodiment of the present disclosure, the GPIO ports that can be set on the wake-up circuit 30 are limited, and the wake-up circuit 30 needs to respond to the standby operation by controlling the power supply circuit 50 to stop supplying power to the slave control circuit 40, the blue module and the remote control module in the laser projection device, and the like through other GPIO ports. By directly connecting the main control circuit 20 with the power board 501, the situation that the GPIO port set on the wake-up circuit 30 is limited and no redundant GPIO port is connected to the first switch circuit 502 on the wake-up circuit 30 can be effectively avoided. Therefore, the power circuit 50 can be effectively ensured to keep the state of supplying power to the main control circuit 20 unchanged when the laser projection device is in the standby state.
Referring to fig. 3 and 4, the power supply circuit 50 may further include a second switch circuit 503, a third switch circuit 504, and a fourth switch circuit 505. The second switch circuit 503, the third switch circuit 504, and the fourth switch circuit 505 may be switches.
The second switch circuit 503 is respectively connected to the power board 501, the wake-up circuit 30 and the slave control circuit 40, and the wake-up circuit 30 is configured to control the second switch circuit 503 to be turned off in response to a standby operation, so that the power board 501 stops supplying power to the slave control circuit 40.
The control terminal of the second switch circuit 503 is connected to the wake-up circuit 30, the input terminal of the second switch circuit 503 is connected to the power board 501, and the output terminal of the second switch circuit 503 is connected to the slave control circuit 40. The wake-up circuit 30 is configured to send an enable signal with an inactive level to the control terminal of the second switch circuit 503 in response to a standby operation, thereby turning off the second switch circuit 503.
In the embodiment of the present disclosure, the wake-up circuit 30 may be connected to the control terminal of the second switch circuit 503 through a third GPIO port of the plurality of GPIO ports that is provided thereto.
The third switch circuit 504 is connected to the power board 501, the main control circuit 20 and the light valve driving component 60, respectively, and the main control circuit 20 is configured to control the third switch circuit 504 to keep a conducting state in response to a standby instruction, so that the power board 501 continuously supplies power to the light valve driving component 60.
The control end of the third switch circuit 504 is connected to the main control circuit 20, the input end of the third switch circuit 504 is connected to the power board 501, and the output end of the third switch circuit 504 is connected to the light valve driving component 60. The main control circuit 20 is configured to continuously send an enable signal with an active level to the control terminal of the third switch circuit 504 in response to a standby instruction, so that the third switch circuit 504 maintains a conducting state.
The fourth switch circuit 505 is connected to the power board 501, the main control circuit 20, and the light source driving component 70, respectively, and the main control circuit 20 is configured to respond to a standby instruction, control the fourth switch circuit 505 to be turned off, so that the power board 501 stops supplying power to the light source driving component 70, and if it is determined that a target object exists in a target range based on the detection signal, control the fourth switch circuit 505 to be turned on, so that the power board 501 supplies power to the light source driving component 70.
The control terminal of the fourth switch circuit 505 is connected to the main control circuit 20, the input terminal of the fourth switch circuit 505 is connected to the power board 501, and the output terminal of the fourth switch circuit 505 is connected to the light source driving component 70.
The main control circuit 20 is configured to send an enable signal with an inactive level to a control terminal of the fourth switch circuit 505 in response to the standby instruction, thereby controlling the fourth switch circuit 505 to be turned off. If it is determined that the target object exists in the target range based on the detection signal, the main control circuit 20 may send an enable signal whose level is an active level to the control terminal of the fourth switch circuit 505, so as to control the fourth switch circuit 505 to be turned on.
In the embodiment of the disclosure, the wake-up circuit 30 is configured to, in response to the standby operation, send a standby instruction to the main control circuit 20 and control the power circuit 50 to stop supplying power to the slave control circuit 40 if it is determined that the standby mode of the laser projection apparatus is the target mode.
The main control circuit 20 is configured to, in response to the standby instruction, control the power circuit 50 to keep the state of supplying power to the light valve driving component 60 unchanged if it is determined that the standby mode of the laser projection apparatus is the target mode, control the power circuit 50 to stop supplying power to the light source driving component 70, and control the power circuit 50 to supply power to the light source driving component 70 and send the projection signal to the light valve driving component 60 if it is determined that the target object exists in the target range based on the detection signal.
In the disclosed embodiments, the laser projection apparatus may display a plurality of modes in response to a mode selection operation while in an operating state. The laser projection apparatus may set a standby mode of the laser projection apparatus to a target mode after receiving a selection operation for the target mode among the plurality of modes. The laser projection apparatus may set a standby mode of the laser projection apparatus to a normal mode after receiving a selection operation for the normal mode among the plurality of modes.
Here, the mode selection operation may be a click operation on a mode selection button in the remote controller, or a selection operation on a mode selection button displayed on the projection screen 02, or a voice instruction for performing mode selection.
In an alternative implementation manner of the embodiment of the present disclosure, referring to fig. 3, if the power circuit 50 includes a power board 501 and a first switch circuit 502, the wake-up circuit 30 is further configured to respond to a standby operation, and if it is determined that the standby mode of the laser projection apparatus is a normal mode, a power-off instruction may be sent to the main control circuit 20. The main control circuit 20 may control the power supply circuit 50 to stop supplying power to the light valve driving component 60 and the light source driving component 70 in response to the power-off command, and then send a feedback signal to the wake-up circuit 30. The wake-up circuit 30 may control the power circuit 50 to stop supplying power to the main control circuit 20 in response to the feedback signal. That is, in this implementation manner, when the standby mode of the laser projection apparatus is the normal mode, the main control circuit 20, the light valve driving component 60, and the light source driving component 70 are all in the power-off state.
In another alternative implementation manner of the embodiment of the present disclosure, referring to fig. 4, if the main control circuit 20 is connected to the power board 501. The wake-up circuit 30 is further configured to send a power-off command to the main control circuit 20 in response to the standby operation if the standby mode of the laser projection apparatus is determined to be the normal mode. The main control circuit 20 may control the power supply circuit 50 to stop supplying power to the light valve driving assembly 60 and the light source driving assembly 70 in response to the power-off command. That is, in this implementation, when the standby mode of the laser projection apparatus is the normal mode, the power circuit 50 continuously supplies power to the main control circuit 20, and both the light valve driving component 60 and the light source driving component 70 are in the power-off state.
Referring to fig. 3 and 4, the laser projection device may further include a heat sink assembly 110 connected to the main control circuit 20. The main control circuit 20 is further configured to, in response to the standby instruction, control the power circuit 50 to stop supplying power to the heat dissipation assembly 110, and if it is determined that a target object exists in the target range based on the detection signal fed back by the detection device 10, control the power circuit 50 to supply power to the heat dissipation assembly 110.
Referring to fig. 3 and 4, the power circuit 50 may further include a fifth switching circuit 506, and the fifth switching circuit 506 is respectively connected to the power board 501, the main control circuit 20, and the heat sink 110. The main control circuit 20 is further configured to, in response to the standby instruction, control the fifth switch circuit 506 to be turned off, so that the power board 501 stops supplying power to the heat dissipation assembly 110, and if it is determined that the target object exists in the target range based on the detection signal, control the fifth switch circuit 506 to be turned on, so that the power board 501 supplies power to the heat dissipation assembly 110.
The control terminal of the fifth switch circuit 506 is connected to the main control circuit 20, the input terminal of the fifth switch circuit 506 is connected to the power board 501, and the output terminal of the fifth switch circuit 506 is connected to the heat sink 110.
The main control circuit 20 is configured to send an enable signal with an inactive level to the control terminal of the fifth switch circuit 506 in response to the standby instruction, so as to turn off the fifth switch circuit 506. If the main control circuit 20 determines that the target object exists in the target range based on the detection signal, it may send an enable signal whose level is an active level to the control terminal of the fifth switch circuit 506, so as to control the fifth switch circuit 506 to be turned on.
In the embodiment of the present disclosure, the main control circuit 20 may further send a driving signal to the heat sink, so that the heat sink operates under the driving of the driving signal.
The main control circuit 20 is further configured to control the power circuit 50 to stop supplying power to the heat dissipation assembly 110 in response to the power-off command when the standby mode of the laser projection apparatus is determined to be the normal mode.
To sum up, the embodiment of the present disclosure provides a laser projection apparatus, where when the laser projection apparatus is in a standby state, if the main control circuit determines that a target object exists in a target range based on the detection signal, the main control circuit may control the power supply circuit to supply power to the light source driving component, and send a projection signal to the light valve driving component, so that the light valve driving component projects and displays a standby image to the projection screen. That is, when the laser projection device is in a standby state, if it is detected that a target object exists in the target range, the laser projection device can project and display a standby picture in the projection screen, so that functions of the laser projection device are effectively enriched.
And when the laser projection device is in a standby state, the main control circuit can respond to the standby instruction, control the power supply circuit to keep the state of supplying power to the light valve driving component unchanged, and the power supply circuit can keep the state of supplying power to the main control circuit and the wake-up circuit unchanged. That is, when the laser projection apparatus is in the standby state, the main control circuit and the light valve driving component are both in the working state, so that when the main control circuit determines that a target object exists in the target range, the main control circuit can quickly control the power supply circuit to supply power to the light source driving component, and send a projection signal to the light valve driving component, so as to quickly display the standby image to the projection screen in a projection manner.
And when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the wake-up circuit in the system-on-chip unchanged, and the power supply circuit stops supplying power to the slave control circuit in the system-on-chip. When the laser projection equipment is in the standby state, the power supply circuit does not need to supply power to the slave control circuit, so that the power consumption of the laser projection equipment in the standby state is reduced.
Fig. 5 is a flowchart of a projection display method provided by an embodiment of the present disclosure, which may be applied to the main control circuit 20 inside the housing of the host 00 in the laser projection apparatus shown in fig. 1, fig. 2, fig. 3, or fig. 4. As shown in fig. 5, the method may include:
The detection signal is generated by the detection device based on a detection result of whether or not the target object exists within the target range.
And step 503, controlling the power circuit to stop supplying power to the light source driving component.
And step 504, if the target object exists in the target range determined based on the detection signal, controlling the power supply circuit to supply power to the light source driving assembly, and sending a projection signal to the light valve driving assembly.
The standby instruction is sent to the master control circuit by the wake-up circuit in response to a standby operation, and the standby operation is used for indicating the wake-up circuit to control the power supply circuit to stop supplying power to the slave control circuit so as to stop the slave control circuit from working; the slave control circuit is used for sending a control instruction to the master control circuit when in a working state; the projection signal is used for instructing the light valve driving component to project and display the standby picture to the projection screen in the process of the light beam emitted by the light source.
The specific implementation process of step 501 to step 504 may refer to the foregoing embodiment, and the embodiment of the present disclosure is not limited herein.
To sum up, the embodiment of the present disclosure provides a projection display method, when the laser projection apparatus is in a standby state, if the main control circuit determines that a target object exists in a target range based on the detection signal, the main control circuit may control the power supply circuit to supply power to the light source driving component, and send a projection signal to the light valve driving component, so that the light valve driving component projects and displays a standby image to a projection screen. That is, when the laser projection device is in a standby state, if it is detected that a target object exists in the target range, the standby picture can be projected and displayed in the projection screen, so that the functions of the laser projection device are effectively enriched.
And when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the wake-up circuit in the system-on-chip unchanged, and the power supply circuit stops supplying power to the slave control circuit in the system-on-chip. When the laser projection equipment is in a standby state, the power supply circuit does not need to supply power to the slave control circuit in the system-on-chip, so that the power consumption of the laser projection equipment in the standby state is reduced.
Fig. 6 is a flowchart of another projection display method provided in the embodiment of the present disclosure, which may be applied to the main control circuit 20 inside the housing of the host 00 in the laser projection apparatus shown in fig. 1, fig. 2, fig. 3, or fig. 4. As shown in fig. 6, the method may include:
The detection signal is generated by the detection device based on a detection result of whether or not the target object exists within the target range.
And 603, controlling the power supply circuit to stop supplying power to the light source driving assembly and the heat dissipation assembly.
And step 604, if the target object exists in the target range is determined based on the detection signal, controlling the power supply circuit to supply power to the light source driving assembly and the heat dissipation assembly, and sending a projection signal to the light valve driving assembly.
The specific implementation process of step 601 to step 604 may refer to the foregoing embodiments, and the embodiments of the present disclosure are not limited herein.
To sum up, the embodiment of the present disclosure provides a projection display method, when the laser projection apparatus is in a standby state, if the main control circuit determines that a target object exists in a target range based on the detection signal, the main control circuit may control the power circuit to supply power to the light source driving component, and send a projection signal to the light valve driving component, so that the light valve driving component projects and displays a standby image onto a projection screen. That is, when the laser projection device is in a standby state, if it is detected that a target object exists in the target range, the standby picture can be projected and displayed in the projection screen, so that the functions of the laser projection device are effectively enriched.
And when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the wake-up circuit in the system-on-chip unchanged, and the power supply circuit stops supplying power to the slave control circuit in the system-on-chip. When the laser projection equipment is in a standby state, the power supply circuit does not need to supply power to the slave control circuit in the system-on-chip, so that the power consumption of the laser projection equipment in the standby state is reduced.
In the disclosed embodiments, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" in the embodiments of the present disclosure means two or more.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. A laser projection device, characterized in that the laser projection device comprises: the device comprises a detection device, a main control circuit, a wake-up circuit, a slave control circuit, a power circuit, a light valve driving component and a light source driving component; the wake-up circuit and the slave control circuit are integrated on a system level chip, and when the laser projection equipment is in a standby state, the power supply circuit keeps the state of supplying power to the master control circuit unchanged;
the detection device is used for detecting whether a target object exists in a target range, generating a detection signal based on a detection result, and sending the detection signal to the main control circuit;
the wake-up circuit is used for responding to a standby operation, sending a standby instruction to the master control circuit and controlling the power supply circuit to stop supplying power to the slave control circuit so as to stop the slave control circuit from working; when the slave control circuit is in a working state, the slave control circuit is used for sending a control instruction to the master control circuit;
the main control circuit is used for responding to the standby instruction, controlling the power supply circuit to keep the state of supplying power to the light valve driving component unchanged, controlling the power supply circuit to stop supplying power to the light source driving component, and controlling the power supply circuit to supply power to the light source driving component and send a projection signal to the light valve driving component if the target object is determined to exist in the target range based on the detection signal;
the light valve driving component is used for responding to the projection signal and displaying a standby image to a projection screen in a projection manner in the process that the light source driving component drives the light source to emit light beams.
2. The laser projection device of claim 1, wherein the power supply circuit comprises: a power panel and a first switching circuit;
the wake-up circuit is further configured to control the first switch circuit to maintain a conducting state in response to the standby operation, so that the power panel continuously supplies power to the main control circuit.
3. The laser projection device of claim 1, wherein the power supply circuit comprises: a power panel;
the main control circuit is directly connected with the power panel.
4. The laser projection device of claim 1, wherein the power supply circuit comprises: the power panel, the second switch circuit, the third switch circuit and the fourth switch circuit;
the wake-up circuit is used for responding to the standby operation and controlling the second switch circuit to be switched off so that the power panel stops supplying power to the slave control circuit;
the main control circuit is used for responding to the standby instruction and controlling the third switch circuit to keep a conducting state, so that the power panel continuously supplies power to the light valve driving assembly;
the master control circuit is used for responding to the standby instruction, controlling the fourth switch circuit to be disconnected, enabling the power panel to stop supplying power to the light source driving assembly, and controlling the fourth switch circuit to be connected if the target object exists in the target range based on the detection signal, and enabling the power panel to supply power to the light source driving assembly.
5. A laser projection device as claimed in any one of claims 1 to 4,
the wake-up circuit is used for responding to a standby operation, and if the standby mode of the laser projection equipment is determined to be a target mode, sending a standby instruction to the master control circuit and controlling the power supply circuit to stop supplying power to the slave control circuit;
the main control circuit is configured to, in response to the standby instruction, control the power supply circuit to maintain a state of supplying power to the light valve driving component and stop supplying power to the light source driving component if it is determined that the standby mode of the laser projection apparatus is the target mode, and control the power supply circuit to supply power to the light source driving component and send a projection signal to the light valve driving component if it is determined that the target object exists within the target range based on the detection signal.
6. The laser projection device of any of claims 1 to 4, further comprising: a heat dissipating component;
the main control circuit is further configured to control the power supply circuit to stop supplying power to the heat dissipation assembly in response to the standby instruction, and control the power supply circuit to supply power to the heat dissipation assembly after determining that the target object exists in the target range based on the detection signal fed back by the detection device.
7. The laser projection apparatus of any of claims 1 to 4, wherein the standby frame is a frame pre-stored in the light valve driving assembly.
8. The laser projection device of any one of claims 1 to 4, wherein the detection means is located on a side of the main housing, the plane of the side intersecting the plane of the projection screen;
or, the detection device is located on one side of the main machine shell far away from the projection screen.
9. The laser projection device of any of claims 1 to 4, wherein the detection means comprises at least one of a millimeter wave sensor, a pyroelectric infrared sensor, and a camera.
10. A method of projection display, the method comprising:
receiving a detection signal sent by a detection device, wherein the detection signal is generated by the detection device based on a detection result of whether a target object exists in a target range;
responding to the standby instruction, controlling the power supply circuit to keep the state of supplying power to the light valve driving component unchanged;
controlling the power circuit to stop supplying power to the light source driving component;
if the target object exists in the target range based on the detection signal, controlling the power supply circuit to supply power to the light source driving assembly and sending a projection signal to the light valve driving assembly;
the wake-up circuit and the slave control circuit are integrated on a system-level chip, the standby instruction is sent to the master control circuit by the wake-up circuit in response to a standby operation, and the standby operation is used for instructing the wake-up circuit to control the power supply circuit to stop supplying power to the slave control circuit so as to stop working of the slave control circuit; the slave control circuit is used for sending a control instruction to the master control circuit when in a working state; the projection signal is used for indicating the light valve driving component to project and display the standby picture to a projection screen in the process of the light source emitting light beams.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825818.7A CN115695740A (en) | 2021-07-21 | 2021-07-21 | Laser projection equipment and projection display method |
| PCT/CN2022/102067 WO2023000937A1 (en) | 2021-07-21 | 2022-06-28 | Projection device, and projected image correction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110825818.7A CN115695740A (en) | 2021-07-21 | 2021-07-21 | Laser projection equipment and projection display method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115695740A true CN115695740A (en) | 2023-02-03 |
Family
ID=85044882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110825818.7A Pending CN115695740A (en) | 2021-07-21 | 2021-07-21 | Laser projection equipment and projection display method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115695740A (en) |
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2021
- 2021-07-21 CN CN202110825818.7A patent/CN115695740A/en active Pending
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