OPS device, startup method and display device thereof

Abstract

The present disclosure provides an OPS device and a startup method and a display device thereof, and relates to the field of display technology. Among them, after the OPS device is inserted into the display device, it can be powered on for the first time based on the power signal provided by the display device. Then, after the OPS device is powered on for the first time, it receives the power-on signal sent by the display device, and configures the startup conditions of the power management chip in the OPS device according to the current power-on signal. In the subsequent startup process, whenever the power-on signal received by the OPS device meets the configured startup conditions, it can be powered on under the drive of the power management chip. That is, in an embodiment of the present disclosure, whenever the OPS device is inserted into a display device, the OPS device can be powered on for the first time based on the power signal provided by the display device, and then the power-on conditions can be flexibly configured according to the power-on signal of the inserted display device, so that the OPS device can be adapted to display devices with different power-on signals.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to an OPS device, a startup method thereof, and a display apparatus. Background Art

[0002] As a pluggable device, an OPS (Open Pluggable Specification) device can be installed on a display device and provide an OPS system for the display device so that the display device displays content provided by the OPS system.

[0003] At present, the OPS device can be started by receiving a power-on signal sent by a display device, and the power-on signal is usually at a low level for a period of time. Different display devices usually use different hardware platforms, so the duration of the low level of the power-on signal of different display devices is also different. In actual applications, the startup of the OPS device has certain requirements for the duration of the low level of the power-on signal. Therefore, the OPS device can only be adapted to one or a limited number of display devices, which makes the application of the OPS device limited. Summary of the invention

[0004] The present disclosure provides an OPS device and a startup method thereof, and a display device, so as to solve the problem that the existing OPS device can only be adapted to one or a limited number of display devices, resulting in limitations in the application of the OPS device.

[0005] In order to solve the above problems, the present disclosure discloses an OPS device, comprising

[0006] The power-on control circuit is used to input a power signal provided by the display device to the power management chip when detecting that the OPS device is inserted into the display device;

[0007] The power management chip is used to start up in response to the power signal, and to supply power to the main control chip after starting up, so as to turn on the OPS device;

[0008] The power-on control circuit is further used to receive a power-on signal sent by the display device after the OPS device is powered on, and send the power-on signal to the main control chip;

[0009] The main control chip is used to send a configuration instruction to the power management chip and a line switching instruction to the power-on control circuit in response to the power-on signal;

[0010] The power management chip is further used to configure the startup conditions of the power management chip in response to the configuration instruction;

[0011] The power-on control circuit is further used to switch the power-on signal transmission line in response to the line switching instruction, so that after the switching is completed, the power-on signal is sent to the power management chip whenever the power-on signal is received;

[0012] The power management chip is also used to start up after configuration is completed, whenever the received power-on signal meets the configured start-up condition, and to supply power to the main control chip after startup to start up the OPS device.

[0013] Optionally, the main control chip is specifically used to determine the effective level duration of the power-on signal in response to the power-on signal, determine a preset duration according to the effective level duration, the preset duration is less than the effective level duration, and send a configuration instruction carrying the preset duration to the power management chip;

[0014] The power management chip is specifically configured to configure the startup condition of the power management chip according to the preset duration in response to the configuration instruction;

[0015] The power management chip is specifically used to determine that the configured startup conditions are met and start up after the configuration is completed, whenever the effective level of the received power-on signal continues to reach the preset time length, and to supply power to the main control chip after startup to turn on the OPS device.

[0016] Optionally, a first circuit and a second circuit are provided between the power-on control circuit and the power management chip, and a third circuit is provided between the power-on control circuit and the main control chip;

[0017] The power-on control circuit is specifically used to control the first circuit to be turned on, the second circuit to be turned off, and the third circuit to be turned on when it is detected that the OPS device is inserted into the display device, and input the power signal provided by the display device to the power management chip through the first circuit.

[0018] Optionally, the power-on control circuit is further specifically used to receive a power-on signal sent by the display device after the OPS device is powered on, and send the power-on signal to the main control chip through the third line.

[0019] Optionally, the power-on control circuit is also specifically used to respond to the line switching instruction, control the first line to be disconnected, the second line to be turned on, and the third line to be disconnected, so as to realize the switching of the power-on signal transmission line, so that after the switching is completed, whenever the power-on signal is received, the power-on signal is sent to the power management chip through the second line.

[0020] Optionally, the power-on control circuit includes a switch module, the switch module includes a first switch, a second switch and a third switch, the first switch is arranged on the first circuit, the second switch is arranged on the second circuit, and the third switch is arranged on the third circuit;

[0021] The first switch is used to connect the first circuit when closed and disconnect the first circuit when opened; the second switch is used to connect the second circuit when closed and disconnect the second circuit when opened; the third switch is used to connect the third circuit when closed and disconnect the third circuit when opened.

[0022] Optionally, a charging subcircuit, a first current limiting subcircuit and a pull-down subcircuit are further provided on the first line, the receiving end of the power signal, the first switch, the charging subcircuit, the first current limiting subcircuit and the power management chip are connected in sequence, and the pull-down subcircuit is connected to a first node between the charging subcircuit and the first current limiting subcircuit;

[0023] The charging subcircuit is used for charging and outputting the power signal of the first potential when the first switch is closed;

[0024] The pull-down subcircuit is used to pull down the power signal output by the charging subcircuit to a second potential when the first switch is closed, and the second potential is lower than the first potential.

[0025] Optionally, the charging subcircuit includes a capacitor, the first current limiting subcircuit includes a first resistor, the pull-down subcircuit includes a second resistor, and the second resistor is grounded.

[0026] Optionally, a first pull-up sub-circuit is further provided on the second line, the receiving end of the power-on signal, the second switch and the power management chip are connected in sequence, and the first pull-up sub-circuit is connected to a second node between the receiving end of the power-on signal and the second switch;

[0027] The first pull-up sub-circuit is used to pull up the power-on signal from the third potential to a fourth potential when the second switch is closed, and the fourth potential is higher than the third potential;

[0028] A second pull-up sub-circuit is further provided on the third line, the receiving end of the power-on signal, the third switch and the power management chip are connected in sequence, and the second pull-up sub-circuit is connected to a third node between the receiving end of the power-on signal and the third switch;

[0029] The second pull-up sub-circuit is used to pull up the power-on signal from the third potential to a fifth potential when the third switch is closed, and the fifth potential is higher than the third potential.

[0030] Optionally, the first pull-up sub-circuit includes a third resistor, and the second pull-up sub-circuit includes a fourth resistor.

[0031] Optionally, the first pull-up sub-circuit and the second pull-up sub-circuit are the same circuit.

[0032] Optionally, the power-on control circuit further includes a micro control unit and a plug-in detection module, the plug-in detection module is connected to the micro control unit, and the micro control unit is connected to the switch module;

[0033] The plug-in detection module is used to detect the state of the OPS device being inserted into and pulled out of the display device, and when detecting that the OPS device is inserted into the display device, sends an insertion signal to the micro control unit;

[0034] The micro control unit is used to send a control signal to the switch module in response to the insertion signal;

[0035] The switch module is used to control the first circuit to be turned on, the second circuit to be turned off, and the third circuit to be turned on in response to the control signal;

[0036] The micro control unit is further used to control the first line to be disconnected, the second line to be connected, and the third line to be disconnected in response to the line switching instruction.

[0037] Optionally, the micro control unit is also connected to a receiving end of the power signal;

[0038] The receiving end of the power signal is used to supply power to the micro control unit when the OPS device is inserted into the display device;

[0039] The power-on control circuit further includes a battery, and the battery is connected to the micro control unit;

[0040] The battery is used to supply power to the micro control unit when the OPS device is unplugged from the display device.

[0041] Optionally, the plug-in detection module is further used to send a plug-out signal to the micro control unit when detecting that the OPS device is plugged out of the display device;

[0042] The micro control unit is further configured to operate in a mode lower than a preset power consumption in response to the unplugging signal.

[0043] Optionally, the plug-in detection module includes at least one of a micro switch and a distance sensor device.

[0044] Optionally, a fourth circuit is further provided between the power-on control circuit and the main control chip;

[0045] The main control chip is specifically used to send a line switching instruction to the power-on control circuit through the fourth line.

[0046] In order to solve the above problems, the present disclosure also discloses a display device, which includes a pluggable interface, and the pluggable interface can be inserted into the above OPS device.

[0047] Optionally, the display device includes a display panel control board, and the display panel control board includes a power supply and a processor. When the OPS device is inserted into the display device, the power supply is connected to a receiving end of a power signal in the OPS device through the pluggable interface, and the processor is connected to a receiving end of a power-on signal in the OPS device through the pluggable interface.

[0048] The power supply is used to provide the power signal to the OPS device when the OPS device is inserted into the display apparatus;

[0049] The processor is used for providing the power-on signal to the OPS device when the OPS device is inserted into the display apparatus.

[0050] In order to solve the above problems, the present disclosure also discloses a method for starting up an OPS device, which is applied to the above OPS device, and the method includes:

[0051] When the power-on control circuit detects that the OPS device is inserted into the display device, the power-on control circuit inputs a power signal provided by the display device to the power management chip;

[0052] The power management chip starts up in response to the power signal, and supplies power to the main control chip after starting up, so as to turn on the OPS device;

[0053] After the OPS device is turned on, the power-on control circuit receives a power-on signal sent by the display device, and sends the power-on signal to the main control chip;

[0054] The main control chip sends a configuration instruction to the power management chip and sends a line switching instruction to the power control circuit in response to the power-on signal;

[0055] The power management chip configures a startup condition of the power management chip in response to the configuration instruction;

[0056] The power-on control circuit switches the power-on signal transmission line in response to the line switching instruction, so that after the switching is completed, the power-on signal is sent to the power management chip whenever the power-on signal is received;

[0057] After the configuration is completed, the power management chip starts up whenever the received power-on signal meets the configured start-up condition, and after starting up, supplies power to the main control chip to start up the OPS device.

[0058] Optionally, the main control chip sends a configuration instruction to the power management chip in response to the power-on signal, and sends a line switching instruction to the power-on control circuit, including:

[0059] The main control chip responds to the power-on signal, determines the duration of the effective level of the power-on signal, determines a preset duration according to the duration of the effective level, the preset duration is less than the duration of the effective level, and sends a configuration instruction carrying the preset duration to the power management chip;

[0060] The power management chip configures a startup condition of the power management chip in response to the configuration instruction, including:

[0061] The power management chip configures the startup condition of the power management chip according to the preset duration in response to the configuration instruction;

[0062] After the configuration is completed, the power management chip starts up whenever the received power-on signal meets the configured start-up condition, and supplies power to the main control chip after starting up, so that the OPS device starts up, including:

[0063] After the configuration is completed, whenever the effective level of the received power-on signal continues to reach the preset time length, the power management chip determines that the configured startup conditions are met, starts up, and supplies power to the main control chip after startup to turn on the OPS device.

[0064] Compared with the prior art, the present invention has the following advantages:

[0065] In the disclosed embodiment, after the OPS device is inserted into the display device, the OPS device can be powered on for the first time based on the power signal provided by the display device. Then, after the first power-on, the OPS device can receive the power-on signal sent by the display device, and configure the startup conditions of the power management chip in the OPS device according to the current power-on signal. In the subsequent power-on process, whenever the power-on signal received by the OPS device meets the configured startup conditions, it can be powered on under the drive of the power management chip. That is, in the disclosed embodiment, whenever the OPS device is inserted into a display device, the OPS device can be powered on for the first time based on the power signal provided by the display device, and then, the power-on conditions of the OPS device are configured according to the power-on signal of the display device, so that the power-on conditions of the OPS device are adapted to the power-on signal of the inserted display device, so that the OPS device can be flexibly configured according to the power-on signal of the inserted display device, so that the OPS device can be adapted to display devices with different power-on signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 A schematic diagram of an OPS device according to an embodiment of the present disclosure is shown;

[0067] Figure 2 A schematic diagram of another OPS device according to an embodiment of the present disclosure is shown;

[0068] Figure 3 A schematic diagram of another OPS device according to an embodiment of the present disclosure is shown;

[0069] Figure 4 A timing diagram of a power-on signal according to an embodiment of the present disclosure is shown;

[0070] Figure 5 Another timing diagram of a power-on signal according to an embodiment of the present disclosure is shown;

[0071] Figure 6 A schematic diagram of a display device according to an embodiment of the present disclosure is shown;

[0072] Figure 7 A flowchart of the steps of a method for starting up an OPS device according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0073] In order to make the above-mentioned objects, features and advantages of the present disclosure more obvious and understandable, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0074] Embodiment 1

[0075] Figure 1 A schematic diagram of an OPS device according to an embodiment of the present disclosure is shown. Figure 1The OPS device 100 includes a power-on control circuit 10, a power management chip 20 and a main control chip 30 which are interconnected.

[0076] The power-on control circuit 10 is used to input a power signal provided by the display device 200 to the power management chip 20 when it is detected that the OPS device 100 is inserted into the display device 200 .

[0077] The power management chip 20 is used to start up in response to the power signal, and to supply power to the main control chip 30 after starting up, so as to turn on the OPS device 100.

[0078] When the OPS device 100 is inserted into the display device 200, the power-on control circuit 10 can detect the insertion operation. When the OPS device 100 is inserted into the display device 200, the display device 200 can provide a power signal to the OPS device 100, and the power signal can be used as a power-on signal of the OPS device 100 when the OPS device 100 is turned on for the first time after the OPS device 100 is inserted into the display device 200. The power-on control circuit 10 can receive the power signal and then input it into the power management chip 20 to start the power management chip 20. The main function of the power management chip 20 is to perform power control management on the OPS device 100, including supplying power to the main control chip 30, so that the OPS device 100 is turned on and the OPS system is started.

[0079] During the first startup process after the OPS device 100 is inserted into the display apparatus 200, the power management chip 20 can be started using the power signal provided by the display apparatus 200, that is, the OPS device 100 can be started for the first time using the power signal provided by the display apparatus 200.

[0080] The power-on control circuit 10 is also used to receive a power-on signal sent by the display device 200 after the OPS device 100 is powered on, and send the power-on signal to the main control chip 30 .

[0081] The main control chip 30 is used to send a configuration instruction to the power management chip 20 and a line switching instruction to the power control circuit 10 in response to the power-on signal.

[0082] The power management chip 20 is further configured to configure the startup conditions of the power management chip 20 in response to the configuration instruction.

[0083] After the first power-on of the OPS device 100 after the display device 200 is inserted is completed, the OPS device 100 receives the power-on signal sent by the display device 200 through the power-on control circuit 10, and the power-on control circuit 10 sends the power-on signal to the main control chip 30. The main control chip 30 can send a configuration instruction for the current power-on signal to the power management chip 20 based on the power-on signal of the currently inserted display device 200, and then the power management chip 20 can configure the power management chip startup conditions for the current power-on signal. After the configuration is completed, in the subsequent power-on processes of the OPS device 100 for the second and third times, the power management chip 20 can be started using the power-on signal provided by the display device 200. If the current power-on signal meets the configured startup conditions, the power management chip 20 can be started.

[0084] The power-on control circuit 10 is further used to switch the power-on signal transmission line in response to the line switching instruction, so that after the switching is completed, the power-on signal is sent to the power management chip 20 whenever the power-on signal is received.

[0085] The power-on control circuit 10 can first send a power-on signal to the main control chip 30 through a line connected to the main control chip 30, so that the main control chip 30 sends a configuration instruction to complete the configuration of the power management chip 20. Then, the power-on control circuit 10 performs line switching based on the line switching instruction, switches to the line connected to the power management chip 20, and sends a power-on signal to the power management chip 20 through the switched line to start the power management chip 20.

[0086] The power management chip 20 is also used to start up after configuration is completed whenever the received power-on signal meets the configured start-up conditions, and to supply power to the main control chip 30 after startup to start up the OPS device 100.

[0087] In the subsequent startup process after the OPS device 100 is inserted into the display device 200, the power management chip 20 can be started using the startup signal provided by the display device 200, that is, the OPS device 100 can use the startup signal provided by the display device 200 to start for the second time and thereafter.

[0088] In the embodiment of the present disclosure, after the OPS device 100 is inserted into the display device 200, the OPS device 100 can be powered on for the first time based on the power signal provided by the display device 200. Then, after the first power-on, the OPS device 100 can receive the power-on signal sent by the display device 200, and configure the startup conditions of the power management chip in the OPS device according to the current power-on signal. In the subsequent power-on process, whenever the power-on signal received by the OPS device 100 meets the configured startup conditions, it can be powered on under the drive of the power management chip. That is, in the embodiment of the present disclosure, whenever the OPS device is inserted into a display device, the OPS device can be powered on for the first time based on the power signal provided by the display device, and then, the power-on conditions of the OPS device are configured according to the power-on signal of the display device, so that the power-on conditions of the OPS device are adapted to the power-on signal of the inserted display device, so that the OPS device can be flexibly configured according to the power-on signal of the inserted display device, so that the OPS device can be adapted to display devices with different power-on signals.

[0089] Optionally, the main control chip 30 is specifically used to respond to the power-on signal, determine the effective level duration of the power-on signal, determine a preset duration according to the effective level duration, the preset duration is less than the effective level duration, and send a configuration instruction carrying the preset duration to the power management chip 20;

[0090] The power management chip 20 is specifically used to configure the start-up conditions of the power management chip 20 according to a preset duration in response to the configuration instruction;

[0091] The power management chip 20 is specifically used to determine that the configured startup conditions are met and start up whenever the effective level of the received power-on signal continues to reach a preset time after the configuration is completed, and to supply power to the main control chip 30 after startup to turn on the OPS device.

[0092] Among them, after the first power-on is completed, when the main control chip 30 receives the power-on signal of the display device 200, it can determine a preset duration that is less than the duration of the effective level of the power-on signal, and the power management chip 20 can configure the power management chip startup conditions according to the preset duration. After the configuration is completed, during the second, third, and other subsequent power-on processes of the OPS device 100, when the power-on signal is input to the power management chip 20, if the effective level duration reaches the preset duration, it can be considered that the power management chip 20 has received a valid power-on signal, and then the power management chip 20 can be started.

[0093] Optionally, refer to Figure 1A first line L1 and a second line L2 are provided between the power-on control circuit 10 and the power management chip 20 , and a third line L3 is provided between the power-on control circuit 10 and the main control chip 30 .

[0094] Accordingly, the power-on control circuit 10 is specifically used to control the first line L1 to be turned on, the second line L2 to be turned off, and the third line L3 to be turned on when it is detected that the OPS device 100 is inserted into the display device 200, and input the power signal provided by the display device 200 to the power management chip 20 through the first line L1.

[0095] Optionally, the power-on control circuit 10 is further specifically configured to receive a power-on signal sent by the display device 200 after the OPS device 100 is powered on, and send the power-on signal to the main control chip 30 via the third line L3.

[0096] Optionally, the power-on control circuit 10 is also specifically used to respond to a line switching instruction, control the first line L1 to be disconnected, the second line L2 to be turned on, and the third line L3 to be disconnected, so as to realize the switching of the power-on signal transmission line, so that after the switching is completed, whenever a power-on signal is received, the power-on signal is sent to the power management chip 20 through the second line L2.

[0097] Alternatively, refer to Figure 1 A fourth line L4 is also provided between the power-on control circuit 10 and the main control chip 30;

[0098] The main control chip 30 is specifically used to send a line switching instruction to the startup control circuit 10 through the fourth line L4.

[0099] Reference Figure 1 , to input the power signal provided by the display device 200 to the power management chip 20 through the first line L1 to perform the first startup.

[0100] When the power-on control circuit 10 detects that the OPS device 100 is inserted into the display device 200, it can also control the second line L2 between the power-on control circuit 10 and the power management chip 20 to be disconnected, and control the third line L3 between the power-on control circuit 10 and the main control chip 30 to be turned on, so that after the OPS device 100 is powered on for the first time, the power-on control circuit 10 can send the power-on signal of the display device 200 to the main control chip 30 through the third line L3.

[0101] After triggering the power management chip 20 to complete the configuration of the startup conditions, the main control chip 30 may send a line switching instruction to the startup control circuit 10 through a fourth line L4 between the startup control circuit 10 and the main control chip 30 .

[0102] After the power-on control circuit 10 receives the line switching instruction, since the first power-on has been completed, the power signal as the first power-on signal does not need to be received again. Therefore, the power-on control circuit 10 can control the first line L1 between the power-on control circuit 10 and the power management chip 20 to be disconnected.

[0103] In addition, after receiving the line switching instruction, the power-on control circuit 10 can also control the second line L2 between the power-on control circuit 10 and the power management chip 20 to be turned on, and control the third line L3 between the power-on control circuit 10 and the main control chip 30 to be disconnected, so that after the OPS device 100 is turned on for the first time, the power-on control circuit 10 can send the power-on signal of the display device 200 to the main control chip 30 through the third line L3, so that the main control chip 30 triggers the power management chip 20 to configure the startup conditions.

[0104] In the embodiment of the present disclosure, the OPS device 100 can control the input and cutoff of the power signal to the power management chip 20 by turning on and off the first line L1, can control the input and cutoff of the power-on signal to the power management chip 20 by turning on and off the second line L2, and can also control the input and cutoff of the power-on signal to the main control chip 30 by turning on and off the third line L3.

[0105] In the embodiment of the present disclosure, a fifth line L5 is provided between the power management chip 20 and the main control chip 30 , and the power management chip 20 is specifically used to supply power to the main control chip 30 through the fifth line L5 .

[0106] Reference Figure 1 Specifically, the power-on control circuit 10 may receive a power signal provided by the display device 200 through a power signal receiving end 01 , and may receive a power-on signal provided by the display device 200 through a power-on signal receiving end 02 .

[0107] In a specific application, the power management chip 20 may include a VDC (Adapter voltage detect input) pin and a POWERON pin (power-on pin, referred to as PWRON pin), and the power-on control circuit 10 may be connected to the VDC pin of the power management chip 20 through a first line L1, and to the POWERON pin of the power management chip 20 through a second line L2. The main control chip 30 may include an IO pin (input-output pin) and an I2C (Inter-Integrated Circuit) pin, and the power-on control circuit 10 may be connected to the IO pin of the main control chip 30 through a third line L3, and to the I2C pin of the main control chip 30 through a fourth line L4.

[0108] Figure 2 A schematic diagram of another OPS device according to an embodiment of the present disclosure is shown. Figure 2 Specifically, optionally, the power-on control circuit 10 includes a switch module 11, the switch module 11 includes a first switch S1, a second switch S2 and a third switch S3, the first switch S1 is arranged on the first line L1, the second switch S2 is arranged on the second line L2, and the third switch S3 is arranged on the third line L3.

[0109] Correspondingly, the first switch S1 is used to connect the first line L1 when closed and disconnect the first line L1 when opened; the second switch S2 is used to connect the second line L2 when closed and disconnect the second line L2 when opened; the third switch S3 is used to connect the third line L3 when closed and disconnect the third line L3 when opened.

[0110] In an optional embodiment, the OPS device 100 can control the conduction and disconnection of the first line L1 by closing and opening the first switch S1, can control the conduction and disconnection of the second line L2 by closing and opening the second switch S2, and can control the conduction and disconnection of the third line L3 by closing and opening the third switch S3.

[0111] In practical applications, optionally, the first switch S1 , the second switch S2 , and the third switch S3 may be analog switches, and the closing and opening of the first switch S1 , the second switch S2 , and the third switch S3 may be controlled by an analog switch chip.

[0112] In a specific optional embodiment, referring to Figure 2 , a charging sub-circuit 101, a first current limiting sub-circuit 102 and a pull-down sub-circuit 103 may also be provided on the first line L1, the receiving end 01 of the power signal, the first switch S1, the charging sub-circuit 101, the first current limiting sub-circuit 102 and the power management chip 20 are connected in sequence, and the pull-down sub-circuit 103 is connected to the first node P between the charging sub-circuit 101 and the first current limiting sub-circuit 102;

[0113] The charging sub-circuit 101 is used for charging and outputting a power signal of a first potential when the first switch S1 is closed;

[0114] The pull-down sub-circuit 103 is used to pull down the power signal output by the charging sub-circuit 101 to a second potential when the first switch S1 is closed. The second potential is lower than the first potential.

[0115] When the first switch S1 is closed, the first line L1 is turned on, and the charging subcircuit 101 can be charged, thereby outputting a high-potential power signal, which is pulled down by the pull-down subcircuit 103 and limited by the first current limiting subcircuit 102, and can be adapted to the VDC pin of the power management chip 20. In practical applications, the VDC pin can be configured to start the power management chip 20 when receiving a low-level-high-level-low-level signal, and the charging subcircuit 101 can make the power signal received by the VDC pin appear at a high level for a required period of time, so that the power management chip 20 starts based on the VDC signal, supplies power to the main control chip 30, and the OPS system starts for the first time.

[0116] Reference Figure 2 In practical applications, optionally, the charging subcircuit 101 may include a capacitor C1, the first current limiting subcircuit 102 includes a first resistor R1 (also known as a current limiting resistor), the pull-down subcircuit 103 includes a second resistor R2 (also known as a pull-down resistor), and the second resistor R2 is grounded.

[0117] In a specific optional embodiment, referring to Figure 2 , a first pull-up sub-circuit 201 may also be provided on the second line L2, the receiving end 02 of the power-on signal, the second switch S2 and the power management chip 20 are connected in sequence, and the first pull-up sub-circuit 201 is connected to the second node Q between the receiving end 02 of the power-on signal and the second switch S2;

[0118] The first pull-up sub-circuit 201 is used for pulling up the power-on signal from the third potential to a fourth potential when the second switch S2 is closed. The fourth potential is higher than the third potential.

[0119] When the second switch S2 is closed, the second line L2 is turned on, and the power-on signal is pulled up through the potential of the first pull-up sub-circuit 201, and can be adapted to the POWERON pin of the power management chip 20. The power-on signal finally received by the POWERON pin will be at a low level for a period of time, so that the power management chip 20 is started based on the POWERON signal, and power is supplied to the main control chip 30, and the OPS system is powered on for the second time or later.

[0120] In a specific optional embodiment, referring to Figure 2 A second pull-up sub-circuit 301 may also be provided on the third line L3, the receiving end 02 of the power-on signal, the third switch S3 and the power management chip 20 are connected in sequence, and the second pull-up sub-circuit 301 is connected to a third node G between the receiving end of the power-on signal and the third switch S3;

[0121] The second pull-up sub-circuit 301 is used to pull up the power-on signal from the third potential to a fifth potential when the third switch S3 is closed. The fifth potential is higher than the third potential.

[0122] When the third switch S3 is closed, the third line L3 is turned on, and the power-on signal is pulled up through the potential of the second pull-up sub-circuit 301, and can be adapted to the IO pin of the main control chip 30. The power-on signal finally received by the IO pin will be at a low level for a period of time, so that the main control chip 30 determines the preset duration based on the duration of the effective level of the IO signal, and triggers the power management chip 20 to configure the startup conditions.

[0123] Reference Figure 2 In practical applications, optionally, the first pull-up sub-circuit 201 includes a third resistor R3 (ie, a pull-up resistor), and the second pull-up sub-circuit 301 includes a fourth resistor R4 (ie, a pull-up resistor).

[0124] In the above specific embodiment, the first pull-up sub-circuit 201 and the second pull-up sub-circuit 301 may be different circuits.

[0125] in addition, Figure 3 A schematic diagram of another OPS device according to an embodiment of the present disclosure is shown. Figure 3 The first pull-up sub-circuit 201 and the second pull-up sub-circuit 301 can also be the same circuit. In this way, the consumption of components and wires is reduced, and the circuit layout space inside the OPS device is saved.

[0126] It should be noted that in the embodiments of the present disclosure, the pull-up / pull-down of the potential refers to the potential before pulling up / pulling down, that is, pulling up refers to pulling up from the target potential to a potential higher than the target potential, and pulling down refers to pulling down from the target potential to a potential lower than the target potential. It cannot be simply understood that pulling up is pulling up a low potential to a high potential, and pulling down is pulling down a high potential to a low potential.

[0127] Alternatively, refer to Figure 2 and Figure 3 The power-on control circuit 10 further includes a micro control unit 12 and a plug-in detection module 13, the plug-in detection module 13 is connected to the micro control unit 12, and the micro control unit 12 is connected to the switch module 11;

[0128] The plug-in detection module 13 is used to detect the state of the OPS device 100 being inserted into and removed from the display device, and when it is detected that the OPS device 100 is inserted into the display device 200, an insertion signal is sent to the micro control unit 12;

[0129] The micro control unit 12 is used to send a control signal to the switch module 11 in response to the insertion signal;

[0130] The switch module 11 is used for controlling the first line L1 to be turned on, the second line L2 to be turned off, and the third line L3 to be turned on in response to a control signal;

[0131] The micro control unit 12 is further used for controlling the first line L1 to be disconnected, the second line L2 to be connected, and the third line L3 to be disconnected in response to the line switching instruction.

[0132] The micro control unit 12 is the core module of the power-on control circuit 10. The plug-in and pull-out detection module 13 can detect the state of the OPS device 100 being plugged into and pulled out of the display device.

[0133] When it is detected that the OPS device 100 is plugged into a display device, the plug-in detection module 13 sends an insertion signal to the micro control unit 12. When the micro control unit 12 receives the insertion signal, it can record the insertion state and send a control signal to the switch module 11, so that the switch module 11 controls the first line L1 to be turned on, the second line L2 to be turned off, and the third line L3 to be turned on. When the micro control unit 12 receives the insertion signal, it can also notify the main control chip 30 through the fourth line L4 that a new display device is inserted at this time. The main control chip 30 can wait for the acquisition of a new power-on signal after the first power-on.

[0134] The micro control unit 12 can also control the first line L1 to be disconnected, the second line L2 to be connected, and the third line L3 to be disconnected when receiving the line switching instruction sent by the main control chip 30 .

[0135] When it is detected that the OPS device 100 is unplugged from the display device, the plug-in detection module 13 sends an unplug signal to the micro control unit 12. When the micro control unit 12 receives the unplug signal, it can record the unplug status.

[0136] Optionally, the micro control unit 12 is also connected to the receiving end 01 of the power signal;

[0137] The receiving end 01 of the power signal is used to supply power to the micro control unit 12 when the OPS device 100 is inserted into the display device 200;

[0138] The power-on control circuit 10 further includes a battery 14, which is connected to the micro control unit 12;

[0139] The battery 14 is used to supply power to the micro control unit when the OPS device 100 is unplugged from the display apparatus 200 .

[0140] When the OPS device 100 is inserted into the display device 200, the micro control unit 12 can be powered by the power signal provided by the display device 200, so that the micro control unit 12 can work normally. When the OPS device 100 is unplugged from the display device 200, the micro control unit 12 can be powered by the battery 14, so that the micro control unit 12 can still detect the insertion signal when the display device is not connected.

[0141] Further optionally, the plug-in detection module 13 is further configured to send a plug-out signal to the micro control unit 12 when detecting that the OPS device 100 is plugged out of the display device 200;

[0142] The micro control unit 12 is further configured to operate in a mode with a power consumption lower than a preset power consumption in response to the unplugging signal.

[0143] In one embodiment, the micro control unit 12 can operate in a low power consumption mode when not connected to the display device, thereby reducing the power consumption of the battery 14.

[0144] In practical applications, the power level of the battery 14 can be designed to ensure that the OPS device 100 can operate in a low power consumption mode for more than half a year when not connected to a display device.

[0145] Specifically and optionally, the plugging and unplugging detection module 13 includes at least one of a micro switch and a distance sensor.

[0146] The following will introduce other modules that may be included in the OPS device 100 based on a more specific optional embodiment.

[0147] In practical applications, the main control chip 30 may specifically be a SOC chip (System on Chip).

[0148] Reference Figure 2 and Figure 3 A third pull-up subcircuit 601 may also be provided on the line between the micro control unit 12 and the plug detection module 13, and the third pull-up subcircuit 601 is connected to a fourth node K between the micro control unit 12 and the plug detection module 13;

[0149] The third pull-up sub-circuit 601 is used to pull up the insert signal from the sixth potential to a seventh potential, where the seventh potential is higher than the sixth potential.

[0150] Reference Figure 2 and Figure 3 In practical applications, optionally, the third pull-up sub-circuit 601 includes a fifth resistor R5 (ie, a pull-up resistor).

[0151] Reference Figure 2 and Figure 3 The OPS device 100 may also include a DCDC (direct current-to-direct current converter), which may be connected to the receiving end 01 of the power signal, and may convert the power signal provided by the display device into the required DC signal VCC, and then provide it to the power-on control circuit 10 and the power management chip 20.

[0152] It should be noted that for the sake of convenience, the drawings have been simplified to a certain extent. Figure 2 and Figure 3The specific connection relationship between DCDC and the inside of the power-on control circuit 10 is not clearly shown, but it should be understood in conjunction with the drawings that each VCC terminal in the power-on control circuit 10 shown in the drawings is connected to the output terminal of DCDC, so that DCDC can input the DC signal VCC into the circuit inside the power-on control circuit 10.

[0153] In practical applications, the OPS device 100 and the display apparatus 200 can be connected via a JAE interface. Accordingly, the receiving end 01 of the power signal is connected to the power signal pin on the JAE interface, and the receiving end 02 of the power-on signal is connected to the power-on signal pin on the JAE interface.

[0154] In addition, refer to Figure 2 and Figure 3 The OPS device 100 may also include DDR (Double Data Rate SDRAM) and eMMC (Embedded Multi Media Card), which may be used to implement some storage-related functions.

[0155] The OPS device 100 may also include a USB-HUB (Universal Serial Bus Hub). A USB device may be inserted through the USB interface extended by the USB-HUB, thereby enabling a display device connected to the OPS device 100 to display the content provided by the USB device.

[0156] The OPS device 100 may also include a PHY (Physical Layer) chip, which can provide networking functions for the OPS device 100. Figure 2 and Figure 3 The RJ45 interface in is a common network interface.

[0157] In addition, the OPS device 100 may further include an LED indicator light, which may light up under the control of the main control chip 30 to prompt the user when the OPS device 100 is in a state that requires prompting the user.

[0158] The OPS device 100 may further include a reset button RESET, which may be used to reset the OPS device 100 when a fault such as a freeze occurs.

[0159] In addition, the OPS device 100 may also include a manual power button (not shown in the figure). Under special circumstances, the user can manually trigger the manual power button to input a forced power signal to the POWERON pin of the power management chip 20 to force the OPS device 100 to start up.

[0160] It is understandable that the above-mentioned modules can be replaced by other modules that can achieve the same or similar functions, and the functions of the above-mentioned different modules can be integrated into one module for implementation, or the functions of the above-mentioned same module can be split into different modules for implementation. The embodiments of the present disclosure do not make specific limitations on this.

[0161] Figure 4 A timing diagram of a power-on signal according to an embodiment of the present disclosure is shown. Figure 4 The OPS device is installed in the display device A. The power-on signal of the display device A is a valid low level starting from t1 and lasts for (t2-t1). At this time, the power management chip of the OPS device is configured to turn on when receiving a low level for (t3-t1), where t3<t2.

[0162] Figure 5 Another timing diagram of the power-on signal according to the embodiment of the present disclosure is shown. Figure 5 When the OPS device is changed from display device A to display device B, the power-on signal of display device B is a valid low level from t4 and lasts for (t5-t4). At this time, the power management chip of the OPS device is configured to start when receiving a low level for (t6-t4), where t6<t5.

[0163] Based on the above two specific examples, it can be seen that the OPS device provided by the embodiment of the present disclosure can be adapted to display devices with different power-on signals.

[0164] In the disclosed embodiment, after the OPS device is inserted into the display device, the OPS device can be powered on for the first time based on the power signal provided by the display device. Then, after the first power-on, the OPS device can receive the power-on signal sent by the display device, and configure the startup conditions of the power management chip in the OPS device according to the current power-on signal. In the subsequent power-on process, whenever the power-on signal received by the OPS device meets the configured startup conditions, it can be powered on under the drive of the power management chip. That is, in the disclosed embodiment, whenever the OPS device is inserted into a display device, the OPS device can be powered on for the first time based on the power signal provided by the display device, and then, the power-on conditions of the OPS device are configured according to the power-on signal of the display device, so that the power-on conditions of the OPS device are adapted to the power-on signal of the inserted display device, so that the OPS device can be flexibly configured according to the power-on signal of the inserted display device, so that the OPS device can be adapted to display devices with different power-on signals.

[0165] Embodiment 2

[0166] Reference Figure 6, showing a schematic diagram of a display device according to an embodiment of the present disclosure, the display device 200 includes a pluggable interface 21, and the pluggable interface 21 can be inserted into the above-mentioned OPS device 100.

[0167] Optionally, the pluggable interface 21 may be a JAE interface.

[0168] Optionally, the display device 200 includes a display panel control board 22, and the display panel control board 22 includes a power supply 221 and a processor 222. When the OPS device 100 is inserted into the display device 200, the power supply 221 is connected to the receiving end 01 of the power signal in the OPS device 100 through the pluggable interface A, and the processor 222 is connected to the receiving end 02 of the power-on signal in the OPS device through the pluggable interface A;

[0169] The power supply 221 is used to provide a power signal to the OPS device 100 when the OPS device 100 is inserted into the display apparatus 200;

[0170] The processor 222 is used to provide a power-on signal to the OPS device 100 when the OPS device 100 is inserted into the display apparatus 200 .

[0171] Specifically, refer to Figure 6 The power signal pin on the JAE interface can be connected to the receiving end 01 of the power signal on the OPS device 100, the processor 222 can output a power-on signal to the JAE interface through the PWR_Ctrl pin, and the power-on signal pin (PS_ON# pin) on the JAE interface can be connected to the receiving end 02 of the power-on signal on the OPS device 100.

[0172] In addition, refer to Figure 6 The display device 200 also includes a display panel 23 , which can display the display content provided by the OPS device 100 under the control of the display panel control board 22 .

[0173] Optionally, in practical applications, the display device 200 may specifically be a digital signage, an electronic whiteboard, an all-in-one conference machine, etc.

[0174] In the disclosed embodiment, after the OPS device is inserted into the display device, the OPS device can be powered on for the first time based on the power signal provided by the display device. Then, after the first power-on, the OPS device can receive the power-on signal sent by the display device, and configure the startup conditions of the power management chip in the OPS device according to the current power-on signal. In the subsequent power-on process, whenever the power-on signal received by the OPS device meets the configured startup conditions, it can be powered on under the drive of the power management chip. That is, in the disclosed embodiment, whenever the OPS device is inserted into a display device, the OPS device can be powered on for the first time based on the power signal provided by the display device, and then, the power-on conditions of the OPS device are configured according to the power-on signal of the display device, so that the power-on conditions of the OPS device are adapted to the power-on signal of the inserted display device, so that the OPS device can be flexibly configured according to the power-on signal of the inserted display device, so that the OPS device can be adapted to display devices with different power-on signals.

[0175] Embodiment 3

[0176] Reference Figure 7 , shows a flowchart of a method for starting up an OPS device according to an embodiment of the present disclosure, the method for starting up the device comprising the following steps:

[0177] Step 701: When the power-on control circuit detects that the OPS device is plugged into the display device, the power-on control circuit inputs a power signal provided by the display device to the power management chip.

[0178] Step 702: The power management chip starts up in response to the power signal, and after starting up, supplies power to the main control chip to turn on the OPS device.

[0179] Step 703: After the OPS device is powered on, the power-on control circuit receives a power-on signal sent by the display device, and sends the power-on signal to the main control chip.

[0180] Step 704: In response to the power-on signal, the main control chip sends a configuration instruction to the power management chip and sends a line switching instruction to the power-on control circuit.

[0181] Optionally, this step specifically includes the following steps:

[0182] The main control chip responds to the power-on signal, determines the duration of the effective level of the power-on signal, determines the preset duration based on the duration of the effective level, and sends a configuration instruction carrying the preset duration to the power management chip.

[0183] Step 705: The power management chip configures the startup conditions of the power management chip in response to the configuration instruction.

[0184] Optionally, this step specifically includes the following steps:

[0185] The power management chip responds to the configuration instruction and configures the startup condition of the power management chip according to the preset duration.

[0186] Step 706: The power-on control circuit switches the power-on signal transmission line in response to the line switching instruction, so that after the switching is completed, the power-on signal is sent to the power management chip whenever the power-on signal is received.

[0187] Step 707: After the configuration is completed, the power management chip starts up whenever the received power-on signal meets the configured start-up conditions, and supplies power to the main control chip after starting up to start up the OPS device.

[0188] Optionally, this step specifically includes the following steps:

[0189] After the power management chip is configured, whenever the effective level of the received power-on signal continues to reach the preset time, it determines that the configured startup conditions are met and starts up. After startup, it supplies power to the main control chip to start up the OPS device.

[0190] The following will be Figure 6 Taking the display device inserted into the OPS device as an example, a specific method for starting up the OPS device is introduced. For other related contents, reference can be made to the above embodiments.

[0191] Reference Figure 6 When the OPS device 100 is inserted into the display device 200, the micro switch signal generates a falling edge. After the micro control unit 12 detects the falling edge, it controls the analog switch S1 to close, S2 to open, and S3 to close. When the display device 200 supplies power to the OPS device 100, the power management chip 20 is started through the VDC pin, the capacitor C1 is charged, and the VDC signal will be high for a period of time, so that the power management chip 20 is started and the main control chip 30 is powered. The OPS system is turned on for the first time.

[0192] After the first startup, the main control chip 30 waits for the startup signal of the display device 200. When the user selects OPS startup on the interface of the display device 200, the processor 222 on the display device 20 side controls the PWR_Ctrl pin to send a startup signal (the startup signal is a low level for a period of time). The main control chip 30 collects this startup signal through the IO pin, records the low level time (such as 600ms) in the on-chip flash (not shown in the figure), and sends a configuration instruction to the power management chip 20, configuring the power management chip 20 to start up when a low level of 500ms is received.

[0193] After the configuration is completed, the main control chip 30 notifies the micro control unit 12 through the I2C pin. The micro control unit 12 controls the analog switch S1 to open, S2 to close, and S3 to open. At this time, the PS_ON# signal (power-on signal) is directly connected to the POWERON pin of the power management chip 20. As long as the OPS device 100 is not unplugged, the next time it is turned on, the OPS device 100 will wait for the power-on signal of the display device 200 before starting.

[0194] When the OPS device 100 is unplugged from the display device 200 , the battery 14 maintains the operation of the power-on control circuit 10 , the micro switch pops up, the micro switch signal is a rising edge, and the micro control unit 12 records the unplugging state after receiving the rising edge.

[0195] The next time the OPS device 100 is inserted into a new display device, the microswitch is pressed and the microswitch signal generates a falling edge. After the microcontroller unit 12 detects the falling edge, it controls the analog switch S1 to close, S2 to open, and S3 to close. The power management chip 20 will start for the first time through the VDC signal. The microcontroller unit 12 notifies the main control chip 30 to insert the new panel, and the main control chip 30 collects a new power-on signal.

[0196] The PS_ON# signal is at a low level for a period of time. For the PWRON level, the PWRON level can be pulled up by a pull-up resistor. In practical applications, the low level time (i.e., the preset duration) of the power-on signal configured by the main control chip 30 to control the power management chip 20 should be slightly less than the low level time of PS_ON# (i.e., the duration of the effective level of the power-on signal). If the configured low level time of the power-on signal is greater than the low level time of the PS_ON# signal, the startup condition of the power management chip 20 will not be triggered, thereby causing the OPS device 100 to be unable to start up. The configured low level time of the power-on signal should not be too short, otherwise it will easily lead to false triggering.

[0197] In the disclosed embodiment, after the OPS device is inserted into the display device, the OPS device can be powered on for the first time based on the power signal provided by the display device. Then, after the first power-on, the OPS device can receive the power-on signal sent by the display device, and configure the startup conditions of the power management chip in the OPS device according to the current power-on signal. In the subsequent power-on process, whenever the power-on signal received by the OPS device meets the configured startup conditions, it can be powered on under the drive of the power management chip. That is, in the disclosed embodiment, whenever the OPS device is inserted into a display device, the OPS device can be powered on for the first time based on the power signal provided by the display device, and then, the power-on conditions of the OPS device are configured according to the power-on signal of the display device, so that the power-on conditions of the OPS device are adapted to the power-on signal of the inserted display device, so that the OPS device can be flexibly configured according to the power-on signal of the inserted display device, so that the OPS device can be adapted to display devices with different power-on signals.

[0198] For the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

[0199] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0200] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0201] The OPS device and its startup method and display device provided by the present disclosure are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method and core idea of ​​the present disclosure. At the same time, for general technical personnel in this field, according to the idea of ​​the present disclosure, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present disclosure.

Claims

1. An OPS device, characterized in that: It includes a power-on control circuit, a power management chip and a main control chip which are interconnected in pairs; The power-on control circuit is used to input a power signal provided by the display device to the power management chip when detecting that the OPS device is inserted into the display device; The power management chip is used to start up in response to the power signal, and to supply power to the main control chip after starting up, so as to turn on the OPS device; The power-on control circuit is further used to receive a power-on signal sent by the display device after the OPS device is powered on, and send the power-on signal to the main control chip; The main control chip is used to send a configuration instruction to the power management chip and a line switching instruction to the power-on control circuit in response to the power-on signal; The power management chip is further used to configure the startup conditions of the power management chip in response to the configuration instruction; The power-on control circuit is further used to switch the power-on signal transmission line in response to the line switching instruction, so that after the switching is completed, the power-on signal is sent to the power management chip whenever the power-on signal is received; The power management chip is also used to start up after configuration is completed, whenever the received power-on signal meets the configured start-up condition, and to supply power to the main control chip after startup to start up the OPS device.

2. The OPS device according to claim 1, characterized in that: The main control chip is specifically used to respond to the power-on signal, determine the effective level duration of the power-on signal, determine a preset duration according to the effective level duration, the preset duration is less than the effective level duration, and send a configuration instruction carrying the preset duration to the power management chip; The power management chip is specifically configured to configure the startup condition of the power management chip according to the preset duration in response to the configuration instruction; The power management chip is specifically used to determine that the configured startup conditions are met and start up after the configuration is completed, whenever the effective level of the received power-on signal continues to reach the preset time length, and to supply power to the main control chip after startup to turn on the OPS device.

3. The OPS device according to claim 1, characterized in that: A first circuit and a second circuit are provided between the power-on control circuit and the power management chip, and a third circuit is provided between the power-on control circuit and the main control chip; The power-on control circuit is specifically used to control the first circuit to be turned on, the second circuit to be turned off, and the third circuit to be turned on when it is detected that the OPS device is inserted into the display device, and input the power signal provided by the display device to the power management chip through the first circuit.

4. The OPS device according to claim 3, characterized in that: The power-on control circuit is also specifically used to receive a power-on signal sent by the display device after the OPS device is powered on, and send the power-on signal to the main control chip through the third line.

5. The OPS device according to claim 3, characterized in that: The power-on control circuit is also specifically used to respond to the line switching instruction, control the first line to be disconnected, the second line to be turned on, and the third line to be disconnected, so as to realize the switching of the power-on signal transmission line, so that after the switching is completed, whenever the power-on signal is received, the power-on signal is sent to the power management chip through the second line.

6. The OPS device according to any one of claims 3 to 5, characterized in that: The power-on control circuit includes a switch module, the switch module includes a first switch, a second switch and a third switch, the first switch is arranged on the first circuit, the second switch is arranged on the second circuit, and the third switch is arranged on the third circuit; The first switch is used to connect the first circuit when closed and disconnect the first circuit when opened; The second switch is used to connect the second circuit when closed and disconnect the second circuit when opened; The third switch is used to connect the third circuit when closed, and disconnect the third circuit when opened.

7. The OPS device according to claim 6, characterized in that: The first line is further provided with a charging subcircuit, a first current limiting subcircuit and a pull-down subcircuit, the receiving end of the power signal, the first switch, the charging subcircuit, the first current limiting subcircuit and the power management chip are connected in sequence, and the pull-down subcircuit is connected to a first node between the charging subcircuit and the first current limiting subcircuit; The charging subcircuit is used for charging and outputting the power signal of the first potential when the first switch is closed; The pull-down subcircuit is used to pull down the power signal output by the charging subcircuit to a second potential when the first switch is closed, and the second potential is lower than the first potential.

8. The OPS device according to claim 7, characterized in that: The charging subcircuit includes a capacitor, the first current limiting subcircuit includes a first resistor, the pull-down subcircuit includes a second resistor, and the second resistor is grounded.

9. The OPS device according to claim 6, characterized in that: A first pull-up sub-circuit is further provided on the second line, the receiving end of the power-on signal, the second switch and the power management chip are connected in sequence, and the first pull-up sub-circuit is connected to a second node between the receiving end of the power-on signal and the second switch; The first pull-up sub-circuit is used to pull up the power-on signal from the third potential to a fourth potential when the second switch is closed, and the fourth potential is higher than the third potential; A second pull-up sub-circuit is further provided on the third line, the receiving end of the power-on signal, the third switch and the power management chip are connected in sequence, and the second pull-up sub-circuit is connected to a third node between the receiving end of the power-on signal and the third switch; The second pull-up sub-circuit is used to pull up the power-on signal from the third potential to a fifth potential when the third switch is closed, and the fifth potential is higher than the third potential.

10. The OPS device according to claim 9, characterized in that: The first pull-up sub-circuit includes a third resistor, and the second pull-up sub-circuit includes a fourth resistor.

11. The OPS device according to claim 9, characterized in that: The first pull-up sub-circuit and the second pull-up sub-circuit are the same circuit.

12. The OPS device according to claim 3, characterized in that: The power-on control circuit further includes a switch module, a micro control unit and a plug-in detection module, wherein the plug-in detection module is connected to the micro control unit, and the micro control unit is connected to the switch module; The plug-in detection module is used to detect the state of the OPS device being inserted into and pulled out of the display device, and when detecting that the OPS device is inserted into the display device, sends an insertion signal to the micro control unit; The micro control unit is used to send a control signal to the switch module in response to the insertion signal; The switch module is used to control the first circuit to be turned on, the second circuit to be turned off, and the third circuit to be turned on in response to the control signal; The micro control unit is further used to control the first line to be disconnected, the second line to be connected, and the third line to be disconnected in response to the line switching instruction.

13. The OPS device according to claim 12, characterized in that: The micro control unit is also connected to the receiving end of the power signal; The receiving end of the power signal is used to supply power to the micro control unit when the OPS device is inserted into the display device; The power-on control circuit further includes a battery, and the battery is connected to the micro control unit; The battery is used to supply power to the micro control unit when the OPS device is unplugged from the display device.

14. The OPS device according to claim 12, characterized in that: The plug-in detection module is further used to send a plug-out signal to the micro control unit when detecting that the OPS device is plugged out of the display device; The micro control unit is further configured to operate in a mode lower than a preset power consumption in response to the unplugging signal.

15. The OPS device according to claim 12, characterized in that: The plug-in detection module includes at least one of a micro switch and a distance sensor.

16. The OPS device according to claim 1, characterized in that: A fourth circuit is also provided between the power-on control circuit and the main control chip; The main control chip is specifically used to send a line switching instruction to the power-on control circuit through the fourth line.

17. A display device, characterized in that: The display device comprises a pluggable interface, and the pluggable interface can be inserted into the OPS device described in any one of claims 1-16.

18. The display device according to claim 17, characterized in that: The display device includes a display panel control board, and the display panel control board includes a power supply and a processor. When the OPS device is inserted into the display device, the power supply is connected to the receiving end of the power signal in the OPS device through the pluggable interface, and the processor is connected to the receiving end of the power-on signal in the OPS device through the pluggable interface; The power supply is used to provide the power signal to the OPS device when the OPS device is inserted into the display apparatus; The processor is used for providing the power-on signal to the OPS device when the OPS device is inserted into the display apparatus.

19. A method for starting up an OPS device, characterized in that: Applied to the OPS device according to any one of claims 1 to 16, the method comprises: When the power-on control circuit detects that the OPS device is inserted into the display device, the power-on control circuit inputs a power signal provided by the display device to the power management chip; The power management chip starts up in response to the power signal, and supplies power to the main control chip after starting up, so as to turn on the OPS device; After the OPS device is turned on, the power-on control circuit receives a power-on signal sent by the display device, and sends the power-on signal to the main control chip; The main control chip sends a configuration instruction to the power management chip and sends a line switching instruction to the power control circuit in response to the power-on signal; The power management chip configures a startup condition of the power management chip in response to the configuration instruction; The power-on control circuit switches the power-on signal transmission line in response to the line switching instruction, so that after the switching is completed, the power-on signal is sent to the power management chip whenever the power-on signal is received; After the configuration is completed, the power management chip starts up whenever the received power-on signal meets the configured start-up condition, and after starting up, supplies power to the main control chip to start up the OPS device.

20. The method according to claim 19, characterized in that The main control chip sends a configuration instruction to the power management chip in response to the power-on signal, and sends a line switching instruction to the power-on control circuit, including: The main control chip responds to the power-on signal, determines the duration of the effective level of the power-on signal, determines a preset duration according to the duration of the effective level, the preset duration is less than the duration of the effective level, and sends a configuration instruction carrying the preset duration to the power management chip; The power management chip configures a startup condition of the power management chip in response to the configuration instruction, including: The power management chip configures the startup condition of the power management chip according to the preset duration in response to the configuration instruction; After the configuration is completed, the power management chip starts up whenever the received power-on signal meets the configured start-up condition, and supplies power to the main control chip after starting up, so that the OPS device starts up, including: After the configuration is completed, whenever the effective level of the received power-on signal continues to reach the preset time length, the power management chip determines that the configured startup conditions are met, starts up, and supplies power to the main control chip after startup to turn on the OPS device.

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