Device and method for supporting multi-PD output and dynamic power distribution and switcher

Abstract

The invention relates to the technical field of electronic equipment, and discloses a device and method for supporting multi-PD output and dynamic power distribution and a switcher, the device comprises a power processing module, a video signal processing module and a control module, the power processing module comprises one or more power processing sub-circuits, and the video signal processing module comprises one or more video signal processing sub-circuits. The control module determines state switching information and transmits the state switching information to the video signal module; the power processing sub-circuit executes power processing and power supply operation according to the charging demand information; and the video signal processing module executes signal processing operation according to the signal transmission control requirement to obtain a target output signal. It can be seen that real-time synchronization of switching of the data channel and the power channel is achieved, multi-PD output and dynamic power distribution are supported, disconnection or reinitialization of multiple devices during switching is effectively avoided, the collaborative switching accuracy, timeliness and efficiency of the data and the power source are improved, then the accuracy and stability of charging distribution and power supply are improved, and the power supply efficiency is improved. And the problems of multi-device power supply conflict and signal switching delay are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic devices, and in particular to a device, method and switch supporting multi-PD output and dynamic power distribution. Background Art

[0002] At present, with the continuous development of science and technology, the application of electronic devices is becoming more and more extensive. Among them, as a practical device, a USB-C switch can realize signal switching and transmission of multiple USB-C devices.

[0003] However, the existing USB-C switches only support single PD output and cannot provide high-power power supply. When switching multiple devices, problems such as insufficient power supply, slow switching speed, and incompatibility are likely to occur, thus affecting the normal use of the devices and unable to meet the user's usage requirements. It can be seen that it is particularly important to provide a new circuit to support multi-PD output and dynamic power distribution functions. Summary of the Invention

[0004] The present invention provides a device, method and switch supporting multi-PD output and dynamic power distribution, which can realize real-time synchronization of data channel and power channel switching, support multi-PD output, dynamic power distribution, and can provide sufficient power supply when the power of multiple ports is distributed for charging, effectively avoid disconnection or re-initialization when switching multiple devices, improve the accuracy, timeliness and efficiency of collaborative switching of data and power, and further improve the accuracy and stability of charging distribution and power supply, improve the stability and reliability of high-power power supply for multiple devices, and effectively cope with power supply conflicts and signal switching delay problems of multiple devices.

[0005] To solve the above technical problems, in a first aspect of the present invention, a device supporting multi-PD output and dynamic power distribution is disclosed. The device includes a power processing module, a video signal processing module and a control module. The power processing module includes one or more power processing sub-circuits, wherein:

[0006] The first end of each power processing sub-circuit is used for electrically connecting to a power supply processing module, the second end of each power processing sub-circuit is used for electrically connecting to the first end of a video signal input module, the third end of each power processing sub-circuit is electrically connected to the first end of the video signal processing module, the second end of the video signal processing module is used for electrically connecting to the second end of the video signal input module, the third end of the video signal processing module is electrically connected to the control module, and the fourth end of the video signal processing module is used for electrically connecting to a video signal output module;

[0007] The control module is configured to determine state switching information for the video signal processing module and transmit the state switching information to the video signal module, where the state switching information includes signal transmission control requirements;

[0008] The power processing sub - circuit is configured to determine matching charging requirement information according to the video signal input module and the video signal processing module, and perform corresponding device power supply and power isolation operations on the video signal input module respectively according to the matching charging requirement information;

[0009] The video signal processing module is configured to perform corresponding signal processing operations on one or more input signals of the video signal input module according to the signal transmission control requirements, obtain a target output signal, and transmit the target output signal to the video signal output module.

[0010] As an optional implementation manner, in the first aspect of the present invention, the video signal input module includes at least one video signal input circuit;

[0011] Each of the video signal input circuits has a matching power processing sub - circuit;

[0012] The video signal processing module includes a first signal switching circuit and signal analysis and conversion circuits respectively corresponding to each of the video signal input circuits and each of the power processing sub - circuits;

[0013] Wherein:

[0014] A first end of each of the signal analysis and conversion circuits is electrically connected to a first end of the matching video signal input circuit, a second end of each of the signal analysis and conversion circuits is electrically connected to a second end of the matching video signal input circuit, a third end of each of the signal analysis and conversion circuits is electrically connected to a third end of the matching power processing sub - circuit, a fourth end of each of the signal analysis and conversion circuits is electrically connected to a first end of the first signal switching circuit, a second end of the first signal switching circuit is electrically connected to the control module, and a third end of the video signal processing module is for electrically connecting to the video signal output module;

[0015] The signal analysis and conversion circuit is specifically configured to perform corresponding signal analysis and signal conversion operations on the first - type input signals of the matching video signal input module, obtain a first switching signal after signal analysis and conversion, and transmit the first switching signal to the first signal switching circuit;

[0016] The first signal switching circuit is specifically configured to perform corresponding screening and switching operations on all the first signals according to the signal transmission control requirements, obtain a target output signal, and transmit the target output signal to the video signal output module.

[0017] As an alternative implementation manner, in the first aspect of the present invention, each of the signal analysis and conversion circuits at least includes a positive and negative plug signal switching circuit, a protocol processing circuit, and a second signal switching circuit. Each of the protocol processing circuits has a power processing sub-circuit matched therewith, wherein:

[0018] The first end of the positive and negative plug signal switching circuit is electrically connected to the first end of the video signal input circuit matched therewith. The second end of the positive and negative plug signal switching circuit is electrically connected to the first end of the second signal switching circuit. The first end of the protocol processing circuit is electrically connected to the second end of the video signal input circuit matched therewith. The second end of the protocol processing circuit is electrically connected to the third end of the power processing sub-circuit matched therewith. The third end of the protocol processing circuit is electrically connected to the second end of the second signal switching circuit. The third end of the second signal switching circuit is electrically connected to the first end of the first signal switching circuit;

[0019] The positive and negative plug signal switching circuit is specifically configured to determine the current insertion direction of the video signal input circuit, and perform corresponding positive and negative plug signal switching and adjustment operations on the video signal input circuit according to the current insertion direction;

[0020] The protocol processing circuit is specifically configured to determine the second type of input signal of the video signal input circuit, perform corresponding signal analysis operations on the second type of input signal, obtain the charging protocol information of the video signal input circuit, and transmit the charging protocol information to the power processing sub-circuit matched therewith;

[0021] The second signal switching circuit is specifically configured to perform corresponding signal parsing and processing operations on the third signal of the determined protocol processing circuit and perform corresponding signal conversion operations on the fourth signal of the determined positive and negative plug signal switching circuit, obtain a first switching signal, and transmit the first switching signal to the first signal switching circuit.

[0022] As an alternative implementation manner, in the first aspect of the present invention, each of the power processing sub-circuits includes a voltage regulation circuit, a fast charging protocol management circuit, and a voltage isolation switching circuit, wherein:

[0023] The first end of the voltage regulation circuit is used for electrically connecting to the power supply processing module. The second end of the voltage regulation circuit is electrically connected to the first end of the fast charging protocol management circuit. The second end of the fast charging protocol management circuit is electrically connected to the first end of the voltage isolation switching circuit. The second end of the voltage isolation switching circuit is electrically connected to the third end of the video signal input circuit that matches it. The third end of the fast charging protocol management circuit is connected to the second end of the protocol processing circuit that matches it.

[0024] The fast charging protocol management circuit is specifically configured to determine the charging transmission protocol information of the protocol processing circuit that matches it, and based on the charging transmission protocol information, determine the charging demand information of the voltage regulation circuit that matches it, and transmit the charging demand information to the voltage regulation circuit.

[0025] The voltage regulation circuit is specifically configured to perform corresponding voltage determination and output power supply operations according to the determined charging demand information.

[0026] The voltage isolation switching circuit is used to perform corresponding device power supply and power isolation operations on the video signal input circuit that matches it and its own circuit.

[0027] As an optional implementation manner, in the first aspect of the present invention, the video signal input circuit includes a video signal input interface circuit, an electrostatic discharge protection circuit, and a common mode rejection circuit, where:

[0028] The first end of the video signal input interface circuit is electrically connected to the first end of the electrostatic protection circuit. The second end of the video signal input interface circuit is electrically connected to the first end of the common mode rejection circuit. The second end of the common mode rejection circuit is electrically connected to the first end of the positive and negative plug signal switching circuit that matches it. The third end of the video signal input interface circuit is electrically connected to the first end of the protocol processing circuit that matches it.

[0029] As an optional implementation manner, in the first aspect of the present invention, the power supply processing module includes a power input port circuit and a power supply protection circuit, where:

[0030] The first end of the power input port circuit is electrically connected to the first end of the power supply protection circuit. The second end of the power supply protection circuit is electrically connected to the first end of each voltage regulation circuit.

[0031] The power supply protection circuit is used to perform voltage protection operations on the voltage signal output by the power input port circuit.

[0032] As an optional implementation manner, in the first aspect of the present invention, the power supply protection circuit includes an overvoltage protection circuit, a delay circuit, and a TVS protection circuit, where:

[0033] The first end of the TVS protection circuit is electrically connected to the first end of the power input port circuit, the second end of the TVS protection circuit is electrically connected to the first end of the overvoltage protection circuit, the second end of the overvoltage protection circuit is electrically connected to the first end of the delay circuit, and the second end of the delay circuit is electrically connected to the first end of each voltage regulation circuit;

[0034] The TVS protection circuit is configured to perform corresponding transient overvoltage protection operations on signals between the power input port circuit and the voltage regulation circuit;

[0035] The overvoltage protection circuit is configured to perform corresponding continuous overvoltage protection operations on signals between the power input port circuit and the voltage regulation circuit;

[0036] The delay circuit is configured to perform corresponding delay and surge current impact prevention operations on the power input port circuit and the voltage regulation circuit.

[0037] As an optional implementation manner, in the first aspect of the present invention, the signal analysis and conversion circuit further includes a power supply filtering circuit corresponding to the second signal switching circuit, where:

[0038] The first end of the power supply filtering circuit is electrically connected to the fourth end of the second signal switching circuit that matches it;

[0039] The power supply filtering circuit is configured to perform corresponding filtering operations on the input power supply voltage and transmit the filtered power supply voltage to the second signal switching circuit that matches it.

[0040] A second aspect of the present invention discloses a method for supporting multi-PD output and dynamic power distribution. The method is applied to a device for supporting multi-PD output and dynamic power distribution. The device includes a power processing module, a video signal processing module, and a control module. The power processing module includes one or more power processing sub-circuits, where:

[0041] The first end of each power processing sub-circuit is configured to be electrically connected to a power supply processing module, the second end of each power processing sub-circuit is configured to be electrically connected to the first end of a video signal input module, the third end of each power processing sub-circuit is electrically connected to the first end of the video signal processing module, the second end of the video signal processing module is configured to be electrically connected to the second end of the video signal input module, the third end of the video signal processing module is electrically connected to the control module, and the fourth end of the video signal processing module is configured to be electrically connected to a video signal output module;

[0042] The method includes:

[0043] The control module determines state switching information for the video signal processing module and transmits the state switching information to the video signal module. The state switching information includes signal transmission control requirements.

[0044] The power processing sub - circuit determines matching charging requirement information according to the video signal input module and the video signal processing module, and respectively performs corresponding device power supply and power isolation operations on the video signal input module according to the matching charging requirement information.

[0045] The video signal processing module performs corresponding signal processing operations on one or more input signals of the video signal input module according to the signal transmission control requirements, obtains a target output signal, and transmits the target output signal to the video signal output module.

[0046] A third aspect of the present invention discloses a switch, characterized in that the switch includes an input port for receiving a video signal, processes the video signal through a device supporting multi - PD output and dynamic power distribution as described in any one of the first aspects of the present invention to obtain a target video signal, and includes an output port for outputting the target video signal.

[0047] Wherein, the input port and / or the output port is a DP port and / or a Type - C port.

[0048] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0049] A device, method and switch supporting multi-PD output and dynamic power distribution. The device supporting multi-PD output and dynamic power distribution includes a power processing module, a video signal processing module and a control module. The power processing module includes one or more power processing sub-circuits, where: the first end of each power processing sub-circuit is used to electrically connect to the power supply processing module, the second end of each power processing sub-circuit is used to electrically connect to the first end of the video signal input module, the third end of each power processing sub-circuit is electrically connected to the first end of the video signal processing module, the second end of the video signal processing module is used to electrically connect to the second end of the video signal input module, the third end of the video signal processing module is electrically connected to the control module, and the fourth end of the video signal processing module is used to electrically connect to the video signal output module; the control module is used to determine the status switching information for the video signal processing module and transmit the status switching information to the video signal processing module, and the status switching information includes signal transmission control requirements; the power processing sub-circuit is used to determine the matching charging requirement information according to the video signal input module and the video signal processing module, and perform corresponding device power supply and power isolation operations on the video signal input module according to the matching charging requirement information; the video signal processing module is used to perform corresponding signal processing operations on one or more input signals of the video signal input module according to the signal transmission control requirements to obtain a target output signal, and output the target output signal to the video signal output module. It can be seen that the present invention can realize the real-time synchronization of the switching of the data channel and the power supply channel through one or more power processing sub-circuits, the video signal processing module and the control module included in the power processing module, support multi-PD output, dynamic power distribution, and the power supply of multiple ports can provide sufficient power during charging distribution, effectively avoid disconnection or re-initialization when multiple devices are switched, improve the accuracy, timeliness and efficiency of the coordinated switching of data and power supply, and further improve the accuracy and stability of charging distribution and power supply, improve the stability and reliability of high-power power supply for multiple devices, and effectively cope with the problems of power supply conflict and signal switching delay of multiple devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0051] Figure 1 It is a schematic structural diagram of a device supporting multi-PD output and dynamic power distribution disclosed in an embodiment of the present invention;

[0052] Figure 2It is a schematic structural diagram of another device that supports multi-PD output and dynamic power distribution disclosed in the embodiments of the present invention;

[0053] Figure 3 It is a schematic structural diagram of a power supply protection circuit disclosed in the embodiments of the present invention;

[0054] Figure 4 It is a schematic structural diagram of a signal analysis and conversion circuit;

[0055] Figure 5 It is a schematic structural diagram of a control chip disclosed in the embodiments of the present invention;

[0056] Figure 6 It is a schematic structural diagram of a video switching chip disclosed in the embodiments of the present invention;

[0057] Figure 7 It is a schematic structural diagram of a positive and negative plug signal switching chip disclosed in the embodiments of the present invention;

[0058] Figure 8 It is a schematic structural diagram of a protocol processing chip disclosed in the embodiments of the present invention;

[0059] Figure 9 It is a schematic structural diagram of a signal conversion and processing chip disclosed in the embodiments of the present invention;

[0060] Figure 10 It is a schematic structural diagram of a fast charging protocol management chip disclosed in the embodiments of the present invention;

[0061] Figure 11 It is a schematic structural diagram of a voltage regulation chip disclosed in the embodiments of the present invention;

[0062] Figure 12 It is a schematic structural diagram of a video signal input circuit disclosed in the embodiments of the present invention;

[0063] Figure 13 It is a schematic structural diagram of a video signal output module disclosed in the embodiments of the present invention;

[0064] Figure 14 It is a schematic structural diagram of a power supply filtering circuit disclosed in the embodiments of the present invention;

[0065] Figure 15 It is an architecture diagram of a device that supports multi-PD output and dynamic power distribution disclosed in the embodiments of the present invention;

[0066] Figure 16 It is a schematic flowchart of a method that supports multi-PD output and dynamic power distribution disclosed in the embodiments of the present invention;

[0067] Figure 17 This is a schematic structural diagram of a switch disclosed in an embodiment of the present invention. Detailed implementation manners

[0068] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0069] It should be noted that, unless otherwise clearly defined and limited, the term "electrically connected" in the specification, claims and above-mentioned drawings of the present invention should be understood in a broad sense. For example, it may be a fixed electrical connection, a detachable electrical connection, or an integral electrical connection; it may be a mechanical electrical connection, an electrical electrical connection or can communicate with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the connection inside two components or the interaction relationship between two components. In addition, the terms "first", "second", etc. in the specification, claims and above-mentioned drawings of the present invention are used to distinguish different objects, rather than to describe a specific order. The terms "comprising" and "having" and any deformation thereof are intended to cover non-exclusive inclusion. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0070] The present invention discloses a device, method and switch supporting multi-PD output and dynamic power distribution, which can realize real-time synchronization of data channel and power supply channel switching through one or more power processing sub-circuits, video signal processing module and control module included in the power processing module, support multi-PD output, dynamic power distribution, and can provide sufficient power supply when the power supply of multiple ports is distributed and charged, effectively avoid disconnection or re-initialization when multiple devices are switched, improve the accuracy, timeliness and efficiency of the coordinated switching of data and power supply, and then improve the accuracy and stability of charging distribution and power supply, improve the stability and reliability of high-power power supply for multiple devices, and effectively cope with the problems of power supply conflict and signal switching delay of multiple devices. The following will be described in detail respectively.

[0071] Embodiment 1

[0072] Please refer to Figure 1 , Figure 1 This is a schematic structural diagram of a device supporting multi-PD output and dynamic power distribution disclosed in an embodiment of the present invention. As Figure 1As shown in the figure, a device supporting multi-PD output and dynamic power distribution includes a power processing module 101, a video signal processing module 102, and a control module 103. The power processing module 101 includes one or more power processing sub-circuits 1011, where:

[0073] The first end of each power processing sub-circuit 1011 is used to be electrically connected to the power supply processing module 104. The second end of each power processing sub-circuit 1011 is used to be electrically connected to the first end of the video signal input module 105. The third end of each power processing sub-circuit 1011 is electrically connected to the first end of the video signal processing module 102. The second end of the video signal processing module 102 is used to be electrically connected to the second end of the video signal input module 105. The third end of the video signal processing module 102 is electrically connected to the control module 103. The fourth end of the video signal processing module 102 is used to be electrically connected to the video signal output module 106;

[0074] The control module 103 is used to determine the status switching information for the video signal processing module 102 and transmit the status switching information to the video signal processing module. The status switching information includes signal transmission control requirements;

[0075] The power processing sub-circuit 1011 is used to determine the matching charging requirement information according to the video signal input module and the video signal processing module, and perform corresponding device power supply and power isolation operations on the video signal input module according to the matching charging requirement information;

[0076] The video signal processing module 102 is used to perform corresponding signal processing operations on one or more input signals of the video signal input module 105 according to the signal transmission control requirements, obtain the target output signal, and transmit the target output signal to the video signal output module 106.

[0077] Optionally, the control module 103 can control the switching state of the video signal processing module 102 (specifically corresponding to the video switching processing chip IT66353) through the IIC signal. Specifically, the control module 103 communicates with the IIC controller of the video switching processing chip IT66353 slave device through the built-in IIC controller, and can adaptively output the resolution suitable for the display device by reading the EDID information of the display device at the HDMIOUT end. The embodiments of the present invention do not make limitations.

[0078] Optionally, the control module 103 can be composed of an MCU chip and peripheral circuits; optionally, the MCU chip can correspond to the ARM CortexM0+ 32-bit microcontroller CX32L003, or it can be other chips that can achieve the same control function. The embodiments of the present invention do not make limitations; further, the electrical connection relationships of the control chip and its various electronic components can be referred toFigure 5 As shown Figure 5 is a schematic structural diagram of a control chip disclosed in an embodiment of the present invention.

[0079] Optionally, the video signal output module 106 may correspond to an HDMI output module, and may specifically be composed of an ESD protection circuit, a 5V output control circuit, etc. Further, the electrical connection relationships of the video signal output module 106 and each electronic component in the video signal output module 106 may be referred to Figure 13 as shown Figure 13 is a schematic structural diagram of a video signal output module 106 disclosed in an embodiment of the present invention.

[0080] Optionally, the power processing module includes one or more power processing sub - circuits, which can implement device power supply and power isolation operations for multiple devices, improve the pertinence, accuracy, and reliability of device power supply for multiple devices, as well as improve the accuracy and reliability of power isolation of the device, thereby improving the stability and safety of device power supply, so as to provide sufficient power supply during charging distribution, and solve the problems of power supply conflict and signal switching delay for multiple devices. The embodiments of the present invention do not make limitations.

[0081] It can be seen that the embodiments of the present invention can realize real - time synchronization of the switching between the data channel and the power channel through one or more power processing sub - circuits, a video signal processing module 102, and a control module 103 included in the power processing module 101, support multi - PD output, dynamic power distribution, and the power supply of multiple ports can provide sufficient power supply during charging distribution, effectively avoid disconnection or re - initialization when multiple devices are switched, improve the accuracy, timeliness, and efficiency of the coordinated switching of data and power, thereby improving the accuracy and stability of charging distribution and power supply, improving the stability and reliability of high - power power supply for multiple devices, and effectively coping with the problems of power supply conflict and signal switching delay for multiple devices.

[0082] In an optional embodiment, as Figure 2 shown Figure 2 is a schematic structural diagram of another device that supports multi - PD output and dynamic power distribution disclosed in an embodiment of the present invention. Among them, the video signal input module 105 may include at least one video signal input circuit 1051; each video signal input circuit 1051 has a power processing sub - circuit 1011 matched with it; the video signal processing module 102 may include a first signal switching circuit 1021, and signal analysis and conversion circuits 1022 corresponding to each video signal input circuit 1051 and each power processing sub - circuit 1011 respectively;

[0083] Among them:

[0084] The first end of each signal analysis and conversion circuit 1022 is electrically connected to the first end of the corresponding video signal input circuit 1051, the second end of each signal analysis and conversion circuit 1022 is electrically connected to the second end of the corresponding video signal input circuit 1051, the third end of each signal analysis and conversion circuit 1022 is electrically connected to the third end of the corresponding power processing sub-circuit 1011, the fourth end of each signal analysis and conversion circuit 1022 is electrically connected to the first end of the first signal switching circuit 1021, the second end of the first signal switching circuit 1021 is electrically connected to the control module 103, and the third end of the video signal processing module 102 is used to be electrically connected to the video signal output module 106;

[0085] The signal analysis and conversion circuit 1022 is specifically configured to perform corresponding signal analysis and signal conversion operations on the first type of input signal of the corresponding video signal input module 105, obtain a first switching signal after signal analysis and conversion, and transmit the first switching signal to the first signal switching circuit 1021;

[0086] The first signal switching circuit 1021 is specifically configured to perform corresponding screening and switching operations on all first signals according to signal transmission control requirements, obtain a target output signal, and transmit the target output signal to the video signal output module 106.

[0087] Optionally, the first signal switching circuit 1021 can be understood as an HDMI signal processing module. The first signal switching circuit 1021 can be composed of a video switching chip and peripheral circuits. Further, the video switching chip can be a video switching chip IT66353 with equalizer gain control, adaptive gain adjustment, high performance, and low power consumption, or other chips that can achieve the same function. The embodiments of the present invention do not make limitations; further, the video switching chip can refer to Figure 6 as shown Figure 6 is a schematic structural diagram of a video switching chip disclosed in an embodiment of the present invention.

[0088] Optionally, the first signal switching circuit 1021 can be used to switch and process TMDS video signals output from multiple IT6565s (i.e., corresponding to the second signal switching circuit), and select one of the multiple video signals to be sent to the HDMI output port (i.e., corresponding to the video signal output module 106). Specifically, the signal of any one of the video signal input circuits 1051 (such as USB-C IN1, USB-C IN2, etc.) can be transmitted to the HDMI output port. A key is used to send an instruction to the control module 103, and then the control module 103 controls the first signal switching circuit 1021 to select which input video signal to input. There are multiple LED indicators in the product, and the state of the indicator can be used to determine which path the signal comes from. The embodiments of the present invention do not make limitations.

[0089] Optionally, the first signal switching circuit 1021 and the video signal output module 106 can interact through DDC signals, HPD signals, and TMDS video signals, which is not limited in the embodiments of the present invention.

[0090] It can be seen that the embodiments of the present invention can perform corresponding signal analysis and signal conversion operations through the signal analysis and conversion circuit 1022, and perform corresponding signal screening and switching operations through the first signal switching circuit 1021 to obtain the target output signal, and transmit the target output signal to the video signal output module 106, which is beneficial to improving the accuracy of signal analysis and conversion of the first type of input signal, and is beneficial to improving the accuracy, reliability, and pertinence of the determined target output signal, and further beneficial to improving the accuracy and reliability of multi-PD output.

[0091] In yet another optional embodiment, as Figure 2 shown, each signal analysis and conversion circuit 1022 can at least include a positive and negative plug signal switching circuit, a protocol processing circuit, and a second signal switching circuit. Each protocol processing circuit has a power processing sub-circuit matched with it, where:

[0092] The first end of the positive and negative plug signal switching circuit is electrically connected to the first end of the video signal input circuit 1051 matched with it. The second end of the positive and negative plug signal switching circuit is electrically connected to the first end of the second signal switching circuit. The first end of the protocol processing circuit is electrically connected to the second end of the video signal input circuit 1051 matched with it. The second end of the protocol processing circuit is electrically connected to the third end of the power processing sub-circuit 1011 matched with it. The third end of the protocol processing circuit is electrically connected to the second end of the second signal switching circuit. The third end of the second signal switching circuit is electrically connected to the first end of the first signal switching circuit 1021;

[0093] The positive and negative plug signal switching circuit is specifically configured to determine the current insertion direction of the video signal input circuit 1051, and perform corresponding positive and negative plug signal switching and adjustment operations on the video signal input circuit 1051 according to the current insertion direction;

[0094] The protocol processing circuit is specifically configured to determine the second type of input signal of the video signal input circuit 1051, perform corresponding signal analysis operations on the second type of input signal to obtain the charging protocol information of the video signal input circuit 1051, and transmit the charging protocol information to the power processing sub-circuit matched with it;

[0095] The second signal switching circuit is specifically configured to perform corresponding signal parsing and processing operations on the determined third signal of the protocol processing circuit and perform corresponding signal conversion operations on the determined fourth signal of the positive and negative plug signal switching circuit to obtain the first switching signal, and transmit the first switching signal to the first signal switching circuit 1021.

[0096] Optionally, the second type of input signal may specifically be a CC signal input by the video signal input circuit 1051 (such as USB-C), which is not limited in the embodiments of the present invention.

[0097] Optionally, the plug-and-play signal switching circuit can be understood as a USB-C plug-and-play switching module. The plug-and-play signal switching circuit can be composed of a plug-and-play signal switching chip and peripheral circuits. Further, the plug-and-play signal switching chip can be a DisplayPort1.4 and USB3.0 switching switch MUX chip VL171, or other chips that can achieve the same function, which is not limited in the embodiments of the present invention; further, the plug-and-play signal switching chip can refer to Figure 7 as shown Figure 7 which is a schematic structural diagram of a plug-and-play signal switching chip disclosed in the embodiments of the present invention.

[0098] Optionally, the plug-and-play signal switching circuit can be used to switch the plug-and-play signals from USB-C IN (i.e., the video signal input module 105). Specifically, since the USB-C interface supports plug-and-play, the plug-and-play signal switching circuit judges the insertion direction of the upstream USB-C through internal logic and switches the signal path in the corresponding direction to the correct position, which is not limited in the embodiments of the present invention.

[0099] Optionally, the protocol processing circuit can be understood as a PD port protocol processing module. The protocol processing circuit can be composed of a protocol processing chip and peripheral circuits. Further, the protocol processing chip can be a PD protocol processing chip VL103R, or other chips that can achieve the same function, which is not limited in the embodiments of the present invention; further, the protocol processing chip can refer to Figure 8 as shown Figure 8 which is a schematic structural diagram of a protocol processing chip disclosed in the embodiments of the present invention.

[0100] Optionally, the protocol processing circuit can be used to detect the CC signal from the USB-C input, and determine whether the input signal is plugged in correctly or reversely through the CC signal. Specifically, when the USB device (i.e., the corresponding video signal input module 105) is inserted, the host or device will detect the level status of the CC1 and CC2 pins to determine the plug direction. The type-C interface has a symmetric pin design and supports plugging in either way. When the plug is inserted, one of CC1 or CC2 will be pulled low to determine the direction. For example, when CC1 is pulled low, it means it is plugged in correctly, and when CC2 is pulled low, it means it is plugged in reversely. In addition, the protocol processing circuit can also determine the PD charging protocol of USB-C through the CC pins. Specifically, the Source (power supply side) and Sink (power receiving side) need to handshake and transmit information to each other through their respective CC signals. The power receiving side tells the power supply side how much power consumption is required, or requests to adjust the output power during dynamic adjustment (such as output voltages of 5V / 9V / 12V / 20V, etc.). The embodiments of the present invention do not make any limitations in this regard.

[0101] Optionally, the second signal switching circuit can be understood as a DP to HDMI signal processing module. The second signal switching circuit can be composed of a signal conversion processing chip and peripheral circuits. Further, the signal conversion processing chip can be a DP to HDMI signal conversion chip IT6565 with equalizer gain control, adaptive gain adjustment, high performance, and low power consumption, or other chips that can achieve the same function. The embodiments of the present invention do not make any limitations in this regard. Further, the signal conversion processing chip can refer to Figure 9 as shown Figure 9 which is a schematic structural diagram of a signal conversion processing chip disclosed in the embodiments of the present invention.

[0102] Optionally, the second signal switching circuit can be used to process the DP signal output from VL171 and the HPD and AUX signals output from VL103R, and at the same time convert the DP signal into an HDMI signal. Specifically, the IT6565 conversion chip is used to parse the Main Link and AUX Channel of the DP signal, separate the video / audio / control signals, and then convert the data packet stream of DP into the "horizontal synchronization + pixel clock" timing of HDMI through timing reconstruction. The embodiments of the present invention do not make any limitations in this regard.

[0103] Optionally, the third signal can specifically be HPD and AUX signals. The embodiments of the present invention do not make any limitations in this regard.

[0104] Optionally, the fourth signal can specifically be a DP signal. Further, the above-mentioned corresponding signal conversion operation is performed on the fourth signal of the determined forward / reverse plug signal switching circuit to obtain the first switching signal. Specifically, the DP signal is converted into an HDMI signal. The embodiments of the present invention do not make any limitations in this regard.

[0105] Optionally, the positive and negative plug signal switching circuit and the video signal input circuit 1051 can interact through USB3.0 signals, the protocol processing circuit and the video signal input circuit 1051 can interact through CC signals, the positive and negative plug signal switching circuit and the second signal switching circuit can interact through DP signals, and the protocol processing circuit and the second signal switching circuit can interact through HPD / AUX signals. The embodiments of the present invention do not make any limitations in this regard.

[0106] It can be seen that the embodiments of the present invention can implement the positive and negative plug signal switching and adjustment function through the positive and negative plug signal switching circuit, determine the charging protocol information of the video signal input circuit 1051 through the protocol processing circuit, and determine the first switching signal through the second signal switching circuit, which is beneficial to improving the accuracy, reliability, pertinence, and timeliness of the positive and negative plug signal switching and adjustment. The correct signal path switching is beneficial to reducing the interference of signals during transmission, improving the stability, reliability, and quality of signals. In addition, it is beneficial to improving the accuracy and reliability of the determined charging protocol information, and further beneficial to improving the charging accuracy and stability of subsequent devices based on the charging protocol information. In addition, it is beneficial to improving the rationality of the first switching signal determination method, and further beneficial to improving the accuracy and reliability of the determined first switching signal, thus being beneficial to improving the signal transmission accuracy and reliability.

[0107] In another optional embodiment, as Figure 2 shown, each power processing sub-circuit 1011 may include a voltage regulation circuit, a fast charging protocol management circuit, and a voltage isolation switching circuit, where:

[0108] The first end of the voltage regulation circuit is used for electrically connecting to the power supply processing module 104, the second end of the voltage regulation circuit is electrically connected to the first end of the fast charging protocol management circuit, the second end of the fast charging protocol management circuit is electrically connected to the first end of the voltage isolation switching circuit, the second end of the voltage isolation switching circuit is electrically connected to the third end of the video signal input circuit 1051 that matches it, and the third end of the fast charging protocol management circuit is connected to the second end of the protocol processing circuit that matches it;

[0109] The fast charging protocol management circuit is specifically configured to determine the charging transmission protocol information of the protocol processing circuit that matches it, and according to the charging transmission protocol information, determine the charging demand information of the voltage regulation circuit that matches it, and transmit the charging demand information to the voltage regulation circuit;

[0110] The voltage regulation circuit is specifically configured to perform corresponding voltage determination and output power supply operations according to the determined charging demand information;

[0111] The voltage isolation switching circuit is used to perform corresponding device power supply and power isolation operations on the video signal input circuit 1051 that matches it and its own circuit.

[0112] Optionally, the fast charging protocol management circuit may be composed of a fast charging protocol management chip and peripheral circuits. Further, the fast charging protocol management chip may be the chip IP2716, or other chips that can achieve the same function. The embodiments of the present invention do not make any limitations. Further, the fast charging protocol management chip may refer to Figure 10 as shown in Figure 10 which is a schematic structural diagram of a fast charging protocol management chip disclosed in the embodiments of the present invention.

[0113] Optionally, the fast charging protocol management circuit can be used to detect the CC signal from the PD chip VL103R to determine the charging protocol of USB-C, so as to control the FB pin of the power supply chip SY8368 (i.e., the corresponding voltage regulation circuit) to output different voltages to meet the power supply requirements of different USB-C devices. Further, through mainstream protocols such as QC3.0 / 2.0, DCP (compatible with Apple and Samsung), BC1.2, MTK PE+1.1, FCP, SCP, etc., to determine how much voltage the input device needs, and then the IP2716 is used to control the SY8368 to output different voltage values. The embodiments of the present invention do not make any limitations.

[0114] Optionally, the voltage regulation circuit may be composed of a voltage regulation chip and peripheral circuits. Further, the voltage regulation chip may be a high-current power supply chip SY8368, or other chips that can achieve the same function. The embodiments of the present invention do not make any limitations. Further, the voltage regulation chip may refer to Figure 11 as shown in Figure 11 which is a schematic structural diagram of a voltage regulation chip disclosed in the embodiments of the present invention.

[0115] Optionally, the voltage regulation circuit can be used to output voltages such as 5V / 9V / 12V / 20V, etc. Further, the voltage regulation of the 9th pin FB of the SY8368 can be controlled through the FB pin of the high-voltage fast charging protocol chip IP2716 (i.e., the corresponding fast charging protocol management circuit) to output different voltages. The embodiments of the present invention do not make any limitations.

[0116] Optionally, the voltage isolation switching circuit may be composed of two PMOS chips AON7403 back to back. The embodiments of the present invention do not make any limitations.

[0117] Optionally, the voltage isolation switching circuit can be used to control the switching and isolation of the power supply from the USB-C device and the adapter, that is, to divide the power supply output from the IP2716 received by the PMOS chip into the power supply output to the USB-C and the power supply for the PMOS chip itself, to prevent different voltages from being used in parallel. The embodiments of the present invention do not make any limitations.

[0118] Optionally, the power supply processing module 104 and the voltage regulation circuit can perform voltage transmission through 24V, the voltage regulation circuit and the fast charging protocol management circuit can perform voltage transmission through 5 - 20V, the fast charging protocol management circuit and the voltage isolation switching circuit can perform voltage transmission through 5 - 20V, the voltage isolation switching circuit and the video signal input circuit 1051 can perform voltage transmission through 5 - 20V, and the fast charging protocol management circuit and the positive and negative plug signal switching circuit can interact through the CC signal. The embodiments of the present invention do not make any limitations in this regard.

[0119] It can be seen that the embodiments of the present invention can determine the charging demand information through the fast charging protocol management circuit, perform corresponding voltage determination and output power supply operations through the voltage regulation circuit, and perform corresponding device power supply and power isolation operations through the voltage isolation switching circuit, which is beneficial to improving the accuracy and reliability of the determined charging demand information, and further beneficial to improving the accuracy and reliability of voltage determination and power supply output. In addition, it is beneficial to improve the accuracy and reliability of device power supply and power isolation, and prevent the video signal input circuit 1051 from being connected in parallel with the power supply and different voltages of the adapter itself, which is further beneficial to improving the power supply accuracy, stability and safety of the device.

[0120] In another optional embodiment, as Figure 2 shown, Figure 2 is a schematic structural diagram of another device supporting multi-PD output and dynamic power distribution disclosed in the embodiments of the present invention. Among them, the video signal input circuit 1051 may include a video signal input interface circuit, an electrostatic discharge protection circuit, and a common mode rejection circuit, where:

[0121] The first end of the video signal input interface circuit is electrically connected to the first end of the electrostatic protection circuit, the second end of the video signal input interface circuit is electrically connected to the first end of the common mode rejection circuit, the second end of the common mode rejection circuit is electrically connected to the first end of the positive and negative plug signal switching circuit that matches it, and the third end of the video signal input interface circuit is electrically connected to the first end of the protocol processing circuit that matches it.

[0122] Optionally, the electrical connection relationships of the video signal input circuit 1051 and each electronic component in the video signal input circuit 1051 can be referred to Figure 12 shown, Figure 12 which is a schematic structural diagram of a video signal input circuit 1051 disclosed in the embodiments of the present invention.

[0123] Optionally, the electrostatic discharge protection circuit, which can be understood as an ESD protection circuit, is specifically used to perform electrostatic discharge protection operations on the video signal input interface circuit and other associated electronic components. The embodiments of the present invention do not make any limitations in this regard.

[0124] Optionally, the common-mode rejection circuit is specifically configured to perform a common-mode rejection operation on relevant signals of the video signal input interface circuit, which is not limited in the embodiments of the present invention.

[0125] Optionally, the video signal input interface circuit may be a USB-C input port, which is specifically configured to externally connect a signal source with a USB-C interface, and is not limited in the embodiments of the present invention.

[0126] It can be seen that the embodiments of the present invention can implement the electrostatic discharge protection function for the video signal input circuit 1051 through the electrostatic discharge protection circuit, preventing the product from being damaged by ESD static electricity. In addition, the common-mode interference suppression function for the video signal input circuit 1051 is implemented through the common-mode rejection circuit, which is beneficial to improving the anti-interference ability, stability and performance of the circuit, improving the transmission smoothness and reliability of the input signal, and further improving the operation stability and safety of the product.

[0127] In another optional embodiment, as Figure 2 shown, the power supply processing module 104 may include a power input port circuit 1041 and a power supply protection circuit 1042, where:

[0128] The first end of the power input port circuit 1041 is electrically connected to the first end of the power supply protection circuit 1042, and the second end of the power supply protection circuit 1042 is electrically connected to the first end of each voltage regulation circuit;

[0129] The power supply protection circuit 1042 is configured to perform a voltage protection operation on the voltage signal output by the power input port circuit 1041.

[0130] Optionally, the power input port circuit 1041 can be used to connect a power adapter to supply power to the entire product, which is not limited in the embodiments of the present invention.

[0131] It can be seen that the embodiments of the present invention can perform a voltage protection operation on the voltage signal output by the power input port circuit through the power supply protection circuit, avoid equipment damage caused by excessive voltage, realize real-time synchronization of the data channel and the power channel switching, avoid signal interference, improve the stability and reliability of the circuit system and power supply transmission, and improve the power supply pertinence and power supply efficiency.

[0132] In another optional embodiment, as Figure 3 shown, Figure 3 is a schematic structural diagram of a power supply protection circuit disclosed in the embodiments of the present invention. Among them, the power supply protection circuit may include an overvoltage protection circuit, a delay circuit and a TVS protection circuit, where:

[0133] The first end of the TVS protection circuit is electrically connected to the first end of the power input port circuit. The second end of the TVS protection circuit is electrically connected to the first end of the overvoltage protection circuit. The second end of the overvoltage protection circuit is electrically connected to the first end of the delay circuit. The second end of the delay circuit is electrically connected to the first end of each voltage regulation circuit;

[0134] The TVS protection circuit is configured to perform corresponding transient overvoltage protection operations on the signals between the power input port circuit and the voltage regulation circuit;

[0135] The overvoltage protection circuit is configured to perform corresponding continuous overvoltage protection operations on the signals between the power input port circuit and the voltage regulation circuit;

[0136] The delay circuit is configured to perform corresponding delay and surge current impact prevention operations on the power input port circuit and the voltage regulation circuit.

[0137] It can be seen that the embodiment of the present invention can achieve the overvoltage protection function for the power module through the overvoltage protection circuit, avoiding equipment damage caused by excessive voltage. In addition, the function of accurately controlling the duration of the signal for the power module is achieved through the delay circuit, which is beneficial to realizing real-time synchronization of the switching between the data channel and the power channel and avoiding signal interference. In addition, the function of protecting the electronic device from transient overvoltage for the power module is achieved through the TVS protection circuit, which is beneficial to improving the stability and reliability of the circuit system and power supply transmission.

[0138] In another optional embodiment, as Figure 4 shown, Figure 4 is a schematic structural diagram of a signal analysis and conversion circuit disclosed in the embodiment of the present invention. The signal analysis and conversion circuit may further include a power supply filtering circuit corresponding to the second signal switching circuit, where:

[0139] The first end of the power supply filtering circuit is electrically connected to the fourth end of the second signal switching circuit that matches it;

[0140] The power supply filtering circuit is configured to perform corresponding filtering operations on the input power supply voltage and transmit the filtered power supply voltage to the second signal switching circuit that matches it.

[0141] Optionally, the power supply filtering circuit may include one or more capacitors according to actual needs. In addition, multiple capacitors can achieve the filtering function through parallel and / or series connection, which is not limited in the embodiment of the present invention.

[0142] Furthermore, the electrical connection relationships of the power supply filtering circuit and each electronic component in the power supply filtering circuit can be referred to Figure 14 shown, Figure 14 which is a schematic structural diagram of a power supply filtering circuit disclosed in the embodiment of the present invention.

[0143] It can be seen that the embodiment of the present invention can perform a filtering operation on the input power supply voltage of the second signal switching circuit through a power supply filtering circuit, removing noise and interference in the power supply signal, which is beneficial to improving the stability and reliability of the power supply signal, and further beneficial to improving the operation stability and lifespan of related electronic devices, and reducing unnecessary interference and damage.

[0144] In another optional embodiment, as Figure 15 shown Figure 15It is the architecture diagram of a device supporting multi-PD output and dynamic power distribution disclosed in the embodiments of the present invention. When there are 2 video signal input circuits 1051, the video signal input circuits 1051 are respectively USB-C IN1 and USB-C IN2. Each video signal input circuit 1051 has a dedicated signal switching circuit for reversible insertion, protocol processing circuit, and second signal switching circuit. All video signal input circuits 1051 uniformly correspond to a first signal switching circuit 1021. When the video signal output module 106 includes 1 video signal output circuit, the video signal output circuit is HDMI OUT. When the video signal processing module 102 includes the first signal switching circuit 1021 and the signal analysis and conversion circuit 1022, the HDMI 2.0 Switch (corresponding to the IT66353 chip) is the first signal switching circuit 1021. When the signal analysis and conversion circuit 1022 includes a signal switching circuit for reversible insertion, protocol processing circuit, and second signal switching circuit, VL171 is the signal switching circuit for reversible insertion, VL103R is the protocol processing circuit, and DP TO HDMI (corresponding to the IT6565 chip) is the second signal switching circuit. When the power processing module 101 includes the power processing sub-circuit 1011 and the power processing sub-circuit 1011 includes a voltage regulation circuit, fast charging protocol management circuit, and voltage isolation switching circuit, SY8368 is the voltage regulation circuit, IP2716 is the fast charging protocol management circuit, and PMOS Switch (corresponding to the PMOS chip AON7403) is the voltage isolation switching circuit. The MCU is the control module 103. DC IN is the power supply processing module 104. The power supply processing module 104 transmits a 24V voltage signal to the voltage regulation circuit. The voltage regulation circuit transmits a 5-12V voltage signal to the fast charging protocol management circuit. The fast charging protocol management circuit transmits a 5-12V voltage signal to the voltage isolation switching circuit. The voltage isolation switching circuit transmits a 5-12V voltage signal to the corresponding video signal input circuit 1051. The fast charging protocol management circuit and the protocol processing circuit interact through the CC signal. The video signal input circuit 1051 and the signal switching circuit for reversible insertion interact through the USB3.0 signal. The video signal input circuit 1051 and the protocol processing circuit interact through the CC signal. The signal switching circuit for reversible insertion transmits a DP*4lane signal to the first signal switching circuit 1021. The protocol processing circuit transmits an HPD / AUX signal to the first signal switching circuit 1021. The first signal switching circuit 1021 and the second signal switching circuit interact through the TMDS*4lane signal, DDC signal, and HPD signal. The first signal switching circuit 1021 and the video signal output module 106 interact through the TMDS*4lane signal, DDC signal, and HPD signal. The first signal switching circuit 1021 and the control module 103 interact through the IIC signal, which is not limited in the embodiments of the present invention.

[0145] Example Two

[0146] Please refer to Figure 16 as shown Figure 16 which is a schematic flowchart of a method for supporting multi-PD output and dynamic power distribution disclosed in an embodiment of the present invention. Among them, the method is applied to a device for supporting multi-PD output and dynamic power distribution. The device includes a power processing module, a video signal processing module, and a control module. The power processing module includes one or more power processing sub-circuits, where:

[0147] The first end of each power processing sub-circuit is used to electrically connect to the power supply processing module, the second end of each power processing sub-circuit is used to electrically connect to the first end of the video signal input module, the third end of each power processing sub-circuit is electrically connected to the first end of the video signal processing module, the second end of the video signal processing module is used to electrically connect to the second end of the video signal input module, the third end of the video signal processing module is electrically connected to the control module, and the fourth end of the video signal processing module is used to electrically connect to the video signal output module;

[0148] As Figure 16 shown, the method may include the following steps:

[0149] 101. The control module determines the status switching information for the video signal processing module and transmits the status switching information to the video signal processing module. The status switching information includes signal transmission control requirements.

[0150] 102. The power processing sub-circuit determines the matching charging requirement information according to the video signal input module and the video signal processing module, and respectively performs corresponding device power supply and power isolation operations on the video signal input module according to the matching charging requirement information.

[0151] 103. The video signal processing module performs corresponding signal processing operations on one or more input signals of the video signal input module according to the signal transmission control requirements, obtains the target output signal, and transmits the target output signal to the video signal output module.

[0152] It can be seen that implementing the embodiment of the present invention can realize real-time synchronization of the switching of the data channel and the power supply channel through one or more power processing sub-circuits, the video signal processing module, and the control module included in the power processing module, support multi-PD output, dynamic power distribution, and sufficient power supply can be provided during the power distribution and charging of multiple ports, effectively avoid disconnection or re-initialization when multiple devices are switched, improve the accuracy, timeliness, and efficiency of the coordinated switching of data and power supply, and further improve the accuracy and stability of charging distribution and power supply, improve the stability and reliability of high-power power supply for multiple devices, and effectively cope with the problems of power supply conflict and signal switching delay of multiple devices.

[0153] In an optional embodiment, the video signal input module may include at least one video signal input circuit; each video signal input circuit has a power processing sub-circuit matched thereto; the video signal processing module includes a first signal switching circuit, and signal analysis and conversion circuits respectively corresponding to each video signal input circuit and each power processing sub-circuit;

[0154] Wherein:

[0155] A first end of each signal analysis and conversion circuit is electrically connected to a first end of the video signal input circuit matched thereto, a second end of each signal analysis and conversion circuit is electrically connected to a second end of the video signal input circuit matched thereto, a third end of each signal analysis and conversion circuit is electrically connected to a third end of the power processing sub-circuit matched thereto, a fourth end of each signal analysis and conversion circuit is electrically connected to a first end of the first signal switching circuit, a second end of the first signal switching circuit is electrically connected to the control module, and a third end of the video signal processing module is for electrically connecting to the video signal output module;

[0156] Further, in step 103 above, the manner in which the video signal processing module performs corresponding signal processing operations on one or more input signals of the video signal input module according to signal transmission control requirements, obtains a target output signal, and transmits the target output signal to the video signal output module specifically includes:

[0157] The signal analysis and conversion circuit performs corresponding signal analysis and signal conversion operations on a first type of input signal of the video signal input module matched thereto, obtains a first switching signal after signal analysis and conversion, and transmits the first switching signal to the first signal switching circuit;

[0158] The first signal switching circuit performs corresponding screening and switching operations on all the first signals according to signal transmission control requirements, obtains a target output signal, and transmits the target output signal to the video signal output module.

[0159] It can be seen that this optional embodiment can obtain a target output signal by the signal analysis and conversion circuit performing corresponding signal analysis and signal conversion operations and the first signal switching circuit performing corresponding signal screening and switching operations, and transmit the target output signal to the video signal output module, which is beneficial to improving the accuracy of signal analysis and conversion of the first type of input signal, and is beneficial to improving the accuracy, reliability and pertinence of the determined target output signal, and further beneficial to improving the accuracy and reliability of multi-PD output.

[0160] In yet another optional embodiment, each signal analysis and conversion circuit may at least include a positive and negative plug signal switching circuit, a protocol processing circuit, and a second signal switching circuit. Each protocol processing circuit has a power processing sub-circuit matched thereto, wherein:

[0161] The first end of the positive and negative plug signal switching circuit is electrically connected to the first end of the video signal input circuit that matches it. The second end of the positive and negative plug signal switching circuit is electrically connected to the first end of the second signal switching circuit. The first end of the protocol processing circuit is electrically connected to the second end of the video signal input circuit that matches it. The second end of the protocol processing circuit is electrically connected to the third end of the power processing sub-circuit that matches it. The third end of the protocol processing circuit is electrically connected to the second end of the second signal switching circuit. The third end of the second signal switching circuit is electrically connected to the first end of the first signal switching circuit;

[0162] Further, the above-mentioned signal analysis and conversion circuit performs corresponding signal analysis and signal conversion operations on the first type of input signal of the matching video signal input module, obtains the first switching signal after signal analysis and conversion, and transmits the first switching signal to the first signal switching circuit. The specific methods include:

[0163] The positive and negative plug signal switching circuit is specifically used to determine the current insertion direction of the video signal input circuit, and perform corresponding positive and negative plug signal switching and adjustment operations on the video signal input circuit according to the current insertion direction;

[0164] The protocol processing circuit is specifically used to determine the second type of input signal of the video signal input circuit, perform corresponding signal analysis operations on the second type of input signal, obtain the charging protocol information of the video signal input circuit, and transmit the charging protocol information to the power processing sub-circuit that matches it;

[0165] The second signal switching circuit is specifically used to perform corresponding signal parsing and processing operations on the third signal of the determined protocol processing circuit and perform corresponding signal conversion operations on the fourth signal of the determined positive and negative plug signal switching circuit, obtain the first switching signal, and transmit the first switching signal to the first signal switching circuit.

[0166] It can be seen that this optional embodiment can realize the positive and negative plug signal switching and adjustment function through the positive and negative plug signal switching circuit, determine the charging protocol information of the video signal input circuit through the protocol processing circuit, and determine the first switching signal through the second signal switching circuit, which is beneficial to improving the accuracy, reliability, pertinence, and timeliness of the positive and negative plug signal switching and adjustment. The correct signal path switching is beneficial to reducing the interference of signals during transmission, improving the stability, reliability, and quality of signals. In addition, it is beneficial to improving the accuracy and reliability of the determined charging protocol information, and further beneficial to improving the charging accuracy and stability of subsequent devices based on the charging protocol information. In addition, it is beneficial to improving the rationality of the first switching signal determination method, and further beneficial to improving the accuracy and reliability of the determined first switching signal, thus being beneficial to improving the signal transmission accuracy and reliability.

[0167] In yet another alternative embodiment, each power processing sub-circuit may include a voltage regulation circuit, a fast charging protocol management circuit, and a voltage isolation switching circuit, where:

[0168] The first end of the voltage regulation circuit is used for electrically connecting to a power supply processing module, the second end of the voltage regulation circuit is electrically connected to the first end of the fast charging protocol management circuit, the second end of the fast charging protocol management circuit is electrically connected to the first end of the voltage isolation switching circuit, the second end of the voltage isolation switching circuit is electrically connected to the third end of a video signal input circuit that matches it, and the third end of the fast charging protocol management circuit is connected to the second end of a protocol processing circuit that matches it;

[0169] Furthermore, the power processing sub-circuit determines the charging requirement information of the video signal input circuit that matches it according to the video signal input circuit and the signal analysis and conversion circuit that matches it, and the specific manner of performing corresponding device power supply and power isolation operations on the video signal input circuit according to the charging requirement information of the video signal input circuit includes:

[0170] The fast charging protocol management circuit determines the charging transmission protocol information of the protocol processing circuit that matches it, and determines the charging requirement information of the voltage regulation circuit that matches it according to the charging transmission protocol information, and transmits the charging requirement information to the voltage regulation circuit;

[0171] The voltage regulation circuit performs corresponding voltage determination and output power supply operations according to the determined charging requirement information;

[0172] The voltage isolation switching circuit performs corresponding device power supply and power isolation operations on the video signal input circuit that matches it and its own circuit.

[0173] It can be seen that this alternative embodiment can determine the charging requirement information through the fast charging protocol management circuit, perform corresponding voltage determination and output power supply operations through the voltage regulation circuit, and perform corresponding device power supply and power isolation operations through the voltage isolation switching circuit, which is beneficial to improving the accuracy and reliability of the determined charging requirement information, and further beneficial to improving the accuracy and reliability of voltage determination and power supply output. In addition, it is beneficial to improve the accuracy and reliability of device power supply and power isolation, and prevent the video signal input circuit from being used in parallel with the power supply and different voltages of the adapter itself, which is further beneficial to improving the power supply accuracy, stability and safety of the device.

[0174] In yet another alternative embodiment, the video signal input circuit may include a video signal input interface circuit, an electrostatic discharge protection circuit, and a common mode rejection circuit, where:

[0175] The first end of the video signal input interface circuit is electrically connected to the first end of the electrostatic protection circuit. The second end of the video signal input interface circuit is electrically connected to the first end of the common-mode rejection circuit. The second end of the common-mode rejection circuit is electrically connected to the first end of the positive and negative plug signal switching circuit that matches it. The third end of the video signal input interface circuit is electrically connected to the first end of the protocol processing circuit that matches it.

[0176] Further, the method may further include the following steps:

[0177] The electrostatic discharge protection circuit performs an electrostatic discharge protection operation on the signal of the video signal input interface circuit.

[0178] The common-mode rejection circuit performs a common-mode rejection operation on the signal between the video signal input interface circuit and the positive and negative plug signal switching circuit.

[0179] It can be seen that this optional embodiment can implement the electrostatic discharge protection function for the video signal input circuit through the electrostatic discharge protection circuit, preventing the product from being damaged by ESD static electricity. In addition, through the common-mode rejection circuit, the common-mode interference suppression function for the video signal input circuit is implemented, which is beneficial to improving the anti-interference ability, stability and performance of the circuit, improving the transmission smoothness and reliability of the input signal, and further improving the operation stability and safety of the product.

[0180] In another optional embodiment, the power supply processing module may include a power input port circuit and a power supply protection circuit, where:

[0181] The first end of the power input port circuit is electrically connected to the first end of the power supply protection circuit. The second end of the power supply protection circuit is electrically connected to the first end of each voltage regulation circuit.

[0182] Further, the method may further include the following steps:

[0183] The power supply protection circuit performs a voltage protection operation on the voltage signal output by the power input port circuit.

[0184] It can be seen that this optional embodiment can perform a voltage protection operation on the voltage signal output by the power input port circuit through the power supply protection circuit, avoid equipment damage caused by excessive voltage, realize real-time synchronization of the switching between the data channel and the power channel, avoid signal interference, improve the stability and reliability of the circuit system and power supply transmission, and improve the power supply pertinence and power supply efficiency.

[0185] In another optional embodiment, the power supply protection circuit includes an overvoltage protection circuit, a delay circuit and a TVS protection circuit, where:

[0186] The first end of the TVS protection circuit is electrically connected to the first end of the power input port circuit. The second end of the TVS protection circuit is electrically connected to the first end of the overvoltage protection circuit. The second end of the overvoltage protection circuit is electrically connected to the first end of the delay circuit. The second end of the delay circuit is electrically connected to the first end of each voltage regulation circuit;

[0187] Further, the specific manner in which the power supply protection circuit performs voltage protection operations on the voltage signal output by the power input port circuit includes:

[0188] The TVS protection circuit performs corresponding transient overvoltage protection operations on the signals between the power input port circuit and the voltage regulation circuit;

[0189] The overvoltage protection circuit performs corresponding continuous overvoltage protection operations on the signals between the power input port circuit and the voltage regulation circuit;

[0190] The delay circuit performs corresponding delay and surge current impact prevention operations on the power input port circuit and the voltage regulation circuit.

[0191] It can be seen that this optional embodiment can achieve the overvoltage protection function for the power module through the overvoltage protection circuit, avoiding equipment damage caused by excessive voltage. In addition, through the delay circuit, the function of accurately controlling the duration of the signal for the power module is realized, which is beneficial to achieving real-time synchronization of the data channel and the power channel switching and avoiding signal interference. In addition, through the TVS protection circuit, the function of protecting the electronic device from transient overvoltage for the power module is realized, which is beneficial to improving the stability and reliability of the circuit system and power supply transmission.

[0192] In another optional embodiment, the signal analysis and conversion circuit further includes a power supply filter circuit corresponding to the second signal switching circuit, where:

[0193] The first end of the power supply filter circuit is electrically connected to the fourth end of the second signal switching circuit that matches it;

[0194] Further, the method may further include the following steps:

[0195] The power supply filter circuit performs corresponding de-filtering operations on the input power supply voltage and transmits the de-filtered power supply voltage to the second signal switching circuit that matches it.

[0196] It can be seen that this optional embodiment can perform de-filtering operations on the input power supply voltage of the second signal switching circuit through the power supply filter circuit, removing noise and interference in the power supply signal, which is beneficial to improving the stability and reliability of the power supply signal, and further beneficial to improving the operation stability and lifespan of related electronic devices, and reducing unnecessary interference and damage.

[0197] Embodiment III

[0198] Please refer to Figure 17 as shown Figure 17 which is a schematic structural diagram of a switch disclosed in an embodiment of the present invention. The switch includes an input port for receiving a video signal, processes the video signal through a device supporting multi-PD output and dynamic power distribution as described in any one of Embodiment 1 to obtain a target video signal, and includes an output port for outputting the target video signal; wherein, the input port and / or the output port is a DP port and / or a Type-C port. It should be noted that for a detailed description of a device supporting multi-PD output and dynamic power distribution, please refer to the specific description of the relevant content in Embodiment 1, which will not be repeated in this embodiment.

[0199] It can be seen that the switch Figure 17 described above can achieve real-time synchronization of data channel and power supply channel switching through one or more power processing sub-circuits, a video signal processing module and a control module included in the power processing module, support multi-PD output, dynamic power distribution, and provide sufficient power supply when the power of multiple ports is distributed and charged, effectively avoid disconnection or re-initialization during switching of multiple devices, improve the accuracy, timeliness and efficiency of coordinated switching of data and power supply, and further improve the accuracy and stability of charging distribution and power supply, improve the stability and reliability of high-power power supply for multiple devices, and effectively address the problems of power supply conflicts and signal switching delays for multiple devices.

[0200] The above has introduced in detail a device, method and switch supporting multi-PD output and dynamic power distribution disclosed in the embodiments of the present invention. Specific embodiments are used in this article to elaborate on the principles and implementation manners of the present invention. However, the above preferred embodiments are not intended to limit the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, based on the idea of the present invention, there will be changes in the specific implementation manner and application scope without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope defined in the claims.

Claims

1. A device supporting multi-PD output and dynamic power allocation, characterized in that, The device includes a power processing module, a video signal processing module, and a control module. The power processing module includes one or more power processing sub-circuits, where: The first end of each power processing sub-circuit is used to electrically connect to a power supply processing module. The second end of each power processing sub-circuit is used to electrically connect to the first end of a video signal input module. The third end of each power processing sub-circuit is electrically connected to the first end of the video signal processing module. The second end of the video signal processing module is used to electrically connect to the second end of the video signal input module. The third end of the video signal processing module is electrically connected to the control module. The fourth end of the video signal processing module is used to electrically connect to a video signal output module; The control module is configured to determine state switching information for the video signal processing module and transmit the state switching information to the video signal module. The state switching information includes signal transmission control requirements; The power processing sub-circuit is configured to determine matching charging requirement information based on the video signal input module and the video signal processing module, and perform corresponding device power supply and power isolation operations on the video signal input module according to the matching charging requirement information; The video signal processing module is configured to perform corresponding signal processing operations on one or more input signals of the video signal input module according to the signal transmission control requirements, obtain a target output signal, and transmit the target output signal to the video signal output module.

2. The device for supporting multi-PD output and dynamic power distribution according to claim 1, characterized in that The video signal input module includes at least one video signal input circuit; each video signal input circuit has a corresponding power processing sub-circuit; The video signal processing module includes a first signal switching circuit, and signal analysis and conversion circuits respectively corresponding to each video signal input circuit and each power processing sub-circuit; Where: The first end of each signal analysis and conversion circuit is electrically connected to the first end of the corresponding video signal input circuit. The second end of each signal analysis and conversion circuit is electrically connected to the second end of the corresponding video signal input circuit. The third end of each signal analysis and conversion circuit is electrically connected to the third end of the corresponding power processing sub-circuit. The fourth end of each signal analysis and conversion circuit is electrically connected to the first end of the first signal switching circuit. The second end of the first signal switching circuit is electrically connected to the control module. The third end of the video signal processing module is used to electrically connect to the video signal output module; The signal analysis and conversion circuit is specifically configured to perform corresponding signal analysis and signal conversion operations on the first type of input signal of the corresponding video signal input module, obtain a first switching signal after signal analysis and conversion, and transmit the first switching signal to the first signal switching circuit; The first signal switching circuit is specifically configured to perform corresponding screening and switching operations on all the first signals according to the signal transmission control requirements, obtain a target output signal, and transmit the target output signal to the video signal output module.

3. The device for supporting multiple PD outputs and dynamic power allocation according to claim 2, wherein, Each of the signal analysis and conversion circuits at least includes a positive and reverse insertion signal switching circuit, a protocol processing circuit, and a second signal switching circuit. Each of the protocol processing circuits has a power processing sub-circuit matched thereto, where: The first end of the positive and reverse insertion signal switching circuit is electrically connected to the first end of the video signal input circuit matched thereto. The second end of the positive and reverse insertion signal switching circuit is electrically connected to the first end of the second signal switching circuit. The first end of the protocol processing circuit is electrically connected to the second end of the video signal input circuit matched thereto. The second end of the protocol processing circuit is electrically connected to the third end of the power processing sub-circuit matched thereto. The third end of the protocol processing circuit is electrically connected to the second end of the second signal switching circuit. The third end of the second signal switching circuit is electrically connected to the first end of the first signal switching circuit; The positive and reverse insertion signal switching circuit is specifically configured to determine the current insertion direction of the video signal input circuit, and perform corresponding positive and reverse insertion signal switching and adjustment operations on the video signal input circuit according to the current insertion direction; The protocol processing circuit is specifically configured to determine the second type of input signal of the video signal input circuit, perform corresponding signal analysis operations on the second type of input signal to obtain the charging protocol information of the video signal input circuit, and transmit the charging protocol information to the power processing sub-circuit matched thereto; The second signal switching circuit is specifically configured to perform corresponding signal parsing and processing operations on the determined third signal of the protocol processing circuit and perform corresponding signal conversion operations on the determined fourth signal of the positive and reverse insertion signal switching circuit to obtain a first switching signal, and transmit the first switching signal to the first signal switching circuit.

4. The device for supporting multi-PD output and dynamic power distribution according to claim 3, wherein Each of the power processing sub-circuits includes a voltage regulation circuit, a fast charging protocol management circuit, and a voltage isolation and switching circuit, where: The first end of the voltage regulation circuit is used to be electrically connected to the power supply processing module. The second end of the voltage regulation circuit is electrically connected to the first end of the fast charging protocol management circuit. The second end of the fast charging protocol management circuit is electrically connected to the first end of the voltage isolation and switching circuit. The second end of the voltage isolation and switching circuit is electrically connected to the third end of the video signal input circuit matched thereto. The third end of the fast charging protocol management circuit is connected to the second end of the protocol processing circuit matched thereto; The fast charging protocol management circuit is specifically configured to determine the charging transmission protocol information of the protocol processing circuit matched thereto, and determine the charging demand information of the voltage regulation circuit matched thereto according to the charging transmission protocol information, and transmit the charging demand information to the voltage regulation circuit; The voltage regulation circuit is specifically configured to perform corresponding voltage determination and output power supply operations according to the determined charging demand information; The voltage isolation and switching circuit is used to perform corresponding device power supply and power isolation operations on the video signal input circuit and its own circuit matched thereto.

5. The device for supporting multi-PD output and dynamic power distribution according to claim 4, characterized in that The video signal input circuit includes a video signal input interface circuit, an electrostatic discharge protection circuit, and a common mode rejection circuit, where: The first end of the video signal input interface circuit is electrically connected to the first end of the electrostatic protection circuit, the second end of the video signal input interface circuit is electrically connected to the first end of the common mode rejection circuit, the second end of the common mode rejection circuit is electrically connected to the first end of the positive and negative plug signal switching circuit that matches it, and the third end of the video signal input interface circuit is electrically connected to the first end of the protocol processing circuit that matches it.

6. The device for supporting multi-PD output and dynamic power distribution according to claim 4, wherein The power supply processing module includes a power input port circuit and a power supply protection circuit, where: The first end of the power input port circuit is electrically connected to the first end of the power supply protection circuit, and the second end of the power supply protection circuit is electrically connected to the first end of each voltage regulation circuit; The power supply protection circuit is used to perform voltage protection operations on the voltage signal output by the power input port circuit.

7. The device for supporting multi-PD output and dynamic power distribution according to claim 6, characterized in that, The power supply protection circuit includes an overvoltage protection circuit, a delay circuit, and a TVS protection circuit, where: The first end of the TVS protection circuit is electrically connected to the first end of the power input port circuit, the second end of the TVS protection circuit is electrically connected to the first end of the overvoltage protection circuit, the second end of the overvoltage protection circuit is electrically connected to the first end of the delay circuit, and the second end of the delay circuit is electrically connected to the first end of each voltage regulation circuit; The TVS protection circuit is used to perform corresponding transient overvoltage protection operations on the signals between the power input port circuit and the voltage regulation circuit; The overvoltage protection circuit is used to perform corresponding continuous overvoltage protection operations on the signals between the power input port circuit and the voltage regulation circuit; The delay circuit is used to perform corresponding delay and surge current impact prevention operations on the power input port circuit and the voltage regulation circuit.

8. A device for supporting multi-PD output and dynamic power allocation according to any one of claims 3-7, characterized in that, The signal analysis and conversion circuit further includes a power supply filter circuit corresponding to the second signal switching circuit, where: The first end of the power supply filter circuit is electrically connected to the fourth end of the second signal switching circuit that matches it; The power supply filter circuit is used to perform corresponding filtering operations on the input power supply voltage and transmit the filtered power supply voltage to the second signal switching circuit that matches it.

9. A method for supporting multiple PD outputs and dynamic power distribution, the method being applied to a device supporting multiple PD outputs and dynamic power distribution, characterized in that, The device includes a power processing module, a video signal processing module, and a control module. The power processing module includes one or more power processing sub-circuits, where: The first end of each power processing sub-circuit is used to be electrically connected to the power supply processing module, the second end of each power processing sub-circuit is used to be electrically connected to the first end of the video signal input module, the third end of each power processing sub-circuit is electrically connected to the first end of the video signal processing module, the second end of the video signal processing module is used to be electrically connected to the second end of the video signal input module, the third end of the video signal processing module is electrically connected to the control module, and the fourth end of the video signal processing module is used to be electrically connected to the video signal output module; The method includes: The control module determines state switching information for the video signal processing module and transmits the state switching information to the video signal module, where the state switching information includes signal transmission control requirements; The power processing sub-circuit determines matching charging requirement information based on the video signal input module and the video signal processing module, and performs corresponding device power supply and power isolation operations on the video signal input module according to the matching charging requirement information; The video signal processing module performs corresponding signal processing operations on one or more input signals of the video signal input module according to the signal transmission control requirements, obtains a target output signal, and transmits the target output signal to the video signal output module.

10. A switch, characterized in that, The switcher includes an input port for receiving a video signal, processes the video signal through a device supporting multi-PD output and dynamic power distribution according to any one of claims 1-8 to obtain a target video signal, and includes an output port for outputting the target video signal; Wherein, the input port and / or the output port is a DP port and / or a Type-C port.

Images