Main control board connecting circuit and device

Abstract

The utility model discloses a main control board connecting circuit and device, and relates to the technical field of devices, the main control board connecting circuit comprises a main control module and a peripheral function module which are independently and integrally designed, the main control module is connected with the peripheral function module, and the main control module comprises a main control chip; the first end of the peripheral interface unit is connected with the main control chip, and the second end of the peripheral interface unit is connected with the peripheral function module. The updating cost of the main control board connection circuit is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of devices, in particular to a main control board connection circuit and device. BACKGROUND

[0002] With the application of device technology in different fields becoming more and more extensive, users also have higher requirements for the design of the main control board connection circuit.

[0003] The traditional main control board connection circuit directly connects the core chip of the main control board and each functional module on a large PCB (Printed Circuit Board), and this main control board connection circuit has defects. When the core chip or functional module of the main control board needs to be updated, the designed lines on the entire PCB need to be redesigned, that is, the main control board connection circuit needs to be redesigned when updating the entire PCB, which causes the update cost of the main control board connection circuit to be high.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. Practical new type content

[0005] The main purpose of the present application is to provide a main control board connection circuit and device, aiming at how to solve the technical problem of high update cost of the main control board connection circuit.

[0006] To achieve the above purpose, the present application provides a main control board connection circuit, which comprises a main control module and a peripheral functional module independently designed, the main control module is connected with the peripheral functional module, and the main control module comprises:

[0007] a main control chip;

[0008] a peripheral interface unit, a first end of the peripheral interface unit is connected with the main control chip, and a second end of the peripheral interface unit is connected with the peripheral functional module.

[0009] In an embodiment, the peripheral interface unit comprises a power supply interface, a power amplifier interface, an audio interface and an HDMI interface.

[0010] In an embodiment, the main control chip comprises:

[0011] a power supply port, the power supply port is connected with the first end of the power supply interface through copper wiring;

[0012] a power amplifier port, the power amplifier port is connected with the first end of the power amplifier interface through copper wiring;

[0013] an audio port, the audio port being connected to a first end of the audio interface through a copper wire;

[0014] an HDMI port, the HDMI port being connected to a first end of the HDMI interface through a copper wire.

[0015] In an embodiment, the peripheral function module comprises a plurality of independent peripheral function units, and the peripheral function units comprise:

[0016] a power supply circuit, an output end of the power supply circuit being connected to a second end of the power supply interface;

[0017] a power amplifier circuit, an input end of the power amplifier circuit being connected to a second end of the power amplifier interface;

[0018] a digital signal processing circuit, an input end of the digital signal processing circuit being connected to a second end of the audio interface;

[0019] a video control circuit, an input end of the video control circuit being connected to a second end of the HDMI interface.

[0020] In an embodiment, the peripheral function module is connected to the peripheral interface unit through a soldering wire, or the peripheral function module is connected to the peripheral interface unit through a jumper wire.

[0021] In an embodiment, the master control module comprises:

[0022] a selector, an input end of the selector being connected to an output port of the master control chip, an output end of the selector being connected to an output interface of the peripheral interface unit, and a control end of the selector being connected to a control unit, wherein the output port comprises one of a power supply port, a power amplifier port, an audio port and an HDMI port in the master control chip, and the output interface comprises an idle interface in the peripheral interface unit.

[0023] In an embodiment, the control unit comprises a control chip, an output end of the control chip being connected to the control end of the selector, or the control unit comprises a key switch, a first end of the key switch being connected to a power supply, and a second end of the key switch being connected to the control end of the selector.

[0024] In addition, in order to achieve the above-mentioned purpose, a master control board connecting device is provided, and the master control board connecting device comprises the master control board connecting circuit.

[0025] In an embodiment, the master control board connecting device comprises one master printed circuit board and a plurality of auxiliary printed circuit boards, each of the auxiliary printed circuit boards is provided with a peripheral function module in the master control board connecting circuit, and the master printed circuit board is provided with a master control module in the master control board connecting circuit.

[0026] In an embodiment, the main control board connecting device comprises a region detachable printed circuit board, the region detachable printed circuit board comprises a plurality of detachable circuit design regions, each of the circuit design regions is provided with a peripheral function module in the main control board connecting circuit, a target circuit design region is provided with a main control module in the main control board connecting circuit, and the target circuit design region is a circuit design region at a middle position of the region detachable printed circuit board.

[0027] Embodiments of the present application provide a main control board connecting circuit, comprising a main control module and a peripheral function module which are independently designed, the main control module is connected with the peripheral function module, and the main control module comprises a main control chip, and a peripheral interface unit, a first end of the peripheral interface unit is connected with the main control chip, and a second end of the peripheral interface unit is connected with the peripheral function module. The main control board connecting circuit is designed by separately designing the main control module and the peripheral function module, so that the peripheral function module is connected through the peripheral interface unit on the main control module, the main control module and / or the peripheral function module can be quickly and separately iterated and updated, and thus the phenomenon that the design lines on the whole PCB need to be redesigned when the core chip or the function module of the main control board needs to be updated is avoided. The main control board connecting circuit avoids the problem of updating the design lines on the whole PCB by the above design manner, and thus the updating cost of the main control board connecting circuit is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a frame schematic diagram of a first embodiment of a main control board connecting circuit of the present application;

[0029] Figure 2 FIG. 2 is a connection schematic diagram of an existing main control board connecting circuit;

[0030] Figure 3 FIG. 3 is a connection schematic diagram of the first embodiment of the main control board connecting circuit of the present application;

[0031] Figure 4 FIG. 4 is a physical schematic diagram of a main control board of the present application;

[0032] Figure 5 FIG. 5 is a connection schematic diagram of a second embodiment of the main control board connecting circuit of the present application;

[0033] Figure 6 FIG. 6 is a connection schematic diagram of a third embodiment of the main control board connecting circuit of the present application;

[0034] Figure 7 FIG. 7 is a connection schematic diagram of a peripheral interface in the main control board connecting circuit of the present application;

[0035] Figure 8 FIG. 8 is another connection schematic diagram of the peripheral interface in the main control board connecting circuit of the present application.

[0036] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

[0037] Explanation of reference signs:

[0038] 100, main control module; 110, main control chip; 120, peripheral interface unit; 200, peripheral function module; 210, main board power supply unit; 220, storage unit; 330, DSP unit; 340, power amplifier unit; 350, Tuner unit; 360, Tcon-less unit; 370, WiFi unit; 230, DSP PCBA unit; 240, power amplifier PCBA unit; 250, Tuner PCBA unit; 260, Tcon-less PCBA unit; 270, peripheral terminal; 121, peripheral power supply interface; 122, first peripheral interface unit; 123, second peripheral interface unit; 124, third peripheral interface unit; 125, fourth peripheral interface unit; 280, WiFi PCBA unit; 290, CI interface unit; 130, selector; 141, control chip; 142, key switch; VCC, power supply; 12A, DDR power supply; 12B, DDR power supply reservation. DETAILED DESCRIPTION

[0039] It should be understood that the specific embodiments described herein are merely intended to explain the present application and are not intended to limit the present application.

[0040] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the accompanying drawings and specific embodiments.

[0041] With the rapid development of the main control board, the iteration speed is also accelerating, and the iteration of the main control board is mainly the iteration of the main SoC (System on Chip) and other core chips (i.e. the update of the core chip and the chip in each functional module), but the existing main control board architecture is to connect the core chip and each functional module on a large PCB, that is, according to the existing main control board architecture, the PCB must be redesigned as long as one chip is iterated, which greatly affects the iteration efficiency. For reference Figure 2 , Figure 2A connection diagram of an existing main control board connection circuit, the existing main control board is mainly divided into the following core modules according to the core chip (the center is a main control module 100): a main board power supply unit 210, the main board power supply unit 210 supplies power for the main control module 100; a storage unit 220, the storage unit 220 stores system software (that is, various stored data and programs), the main control module 100 reads the software and runs the software, and can also write data into the storage unit 220 when needed; a DSP (Digital Signal Processing, digital signal processing) unit 330, the main control module 100 and the DSP unit 330 process and interact audio data; a power amplifier unit 340, the power amplifier unit 340 receives the audio signal output by the main control module 100, drives the rear-stage loudspeaker after processing; a Tuner unit 350, the Tuner (tuner or sound wave regulator) unit 350 receives a coaxial cable signal and converts it into an intermediate frequency signal to be transmitted to the main control module 100; a Tcon-less (a display panel technology) unit 360, the main control module 100 outputs a video signal and a Tcon-less unit 360 control signal to light up the glass through the Tcon-less unit 360; a WiFi (Wireless Fidelity, wireless local area network) unit 370, the main control module 100 interacts with the WiFi unit 370 to receive or transmit network data. Each of the above units and the main control module 100 are arranged on a PCB, if the chip in the DSP unit 330 needs to be updated, the circuit on the whole PCB needs to be designed, which causes the whole main control board to be redeveloped when part of the chip is updated, the development cycle is long, and for mass-produced main control boards, once the core module chip is switched, a large number of boards need to be changed to realize large-scale mass production, which is a huge workload and requires a high supply chain, and if any core chip of the main control board has a supply problem, the production of the whole main control board will be affected.

[0042] Therefore, based on the deficiencies of the above main control board connection method, the main control board connection circuit of the present application is proposed: by designing a separate main control module and a peripheral function module, the peripheral function module is connected through the peripheral interface unit on the main control module, the main control module and / or the peripheral function module can be quickly and iteratively updated, thereby avoiding the phenomenon that the design circuit on the whole PCB needs to be redesigned when the core chip or the function module of the main control board needs to be updated, and the main control board connection circuit is designed by designing a separate main control module and a peripheral function module, the peripheral function module is connected through the peripheral interface unit on the main control module, the main control module and / or the peripheral function module is iteratively updated, avoiding the problem of updating the design circuit on the whole PCB, thereby reducing the update cost of the main control board connection circuit.

[0043] Based on this, the embodiment of the present application provides a main control board connection circuit, referring to Figure 1 ,Figure 1 Figure 1 is a schematic diagram of a frame of a first embodiment of a master control board connection circuit according to the present application.

[0044] With reference to Figure 1 The present application provides a master control board connection circuit, which comprises a master control module 100 and a peripheral function module 200 independently designed and integrated, the master control module 100 is connected with the peripheral function module 200, and the master control module 100 comprises:

[0045] a master control chip 110;

[0046] a peripheral interface unit 120, a first end of the peripheral interface unit 120 is connected with the master control chip 110, and a second end of the peripheral interface unit 120 is connected with the peripheral function module 200.

[0047] In an embodiment, the peripheral function module 200 is connected with the peripheral interface unit 120 through a soldering wire, or the peripheral function module 200 is connected with the peripheral interface unit 120 through a jumper wire.

[0048] In this embodiment, the main control module 100 and peripheral functional modules 200 in the main control board connection circuit are designed independently. Specifically, one PCB board is used for the main control module 100, and another PCB board is used for the peripheral functional modules 200. If there are multiple peripheral functional modules 200, one peripheral functional module 200 is designed on each PCB board. Each peripheral functional module 200 is then connected to the main control chip 110 through the peripheral interface unit 120 in the main control module 100 to realize the function of the entire main control board connection circuit. When a peripheral functional module 200 requires a new chip, the design of that peripheral functional module 200's PCB board is directly modified without changing the entire main control board connection circuit. The entire circuit design can greatly reduce the cost of updating the main control board connection circuit. The peripheral functional module 200 is connected to the peripheral interface unit 120 by soldering wires or by jumper wires. That is, the peripheral functional module 200 is directly connected to the peripheral interface unit 120 on the soldering substrate PCB through copper traces, or the functional module 200 is directly connected to the peripheral interface unit 120 through jumper wires such as DuPont wires. Each method has its advantages. For example, when the main control board is in the factory test stage, jumper wires can be used to facilitate rapid verification. When it is in the factory stage, soldering can be used to ensure the stability of the entire connection. It is worth noting that the main control module 100 can be a main control module used in terminal devices such as display terminals, or it can be a main control module for other application scenarios. This embodiment uses the main control module of a display terminal for explanation (mainly because the peripheral function modules 200 connected to the main control module are different in different application scenarios). This module mainly consists of a main control chip 110 and a peripheral interface unit 120. The main control chip 110 can be a system-on-a-chip such as a SOC. The peripheral interface unit 120 is the interface for the main control chip 110 to interact with other chips or other data, such as the button terminal, infrared signal terminal, power indicator terminal, HDMI (High-Definition Multimedia Interface) terminal, USB (Universal Serial Bus) terminal, miniAV (Audio Video Interface) terminal, network port terminal, digital audio output terminal, etc. set on the main control chip 110. Corresponding interfaces are set in the main control module 100 to connect to other required peripheral function modules 200. The peripheral function modules 200 can be... Figure 2 The relevant functional modules, such as the motherboard power supply unit 210 for power supply and the storage unit 220 for storage, are integrated on a single PCB to reduce the cost of updating the functional module.

[0049] In an embodiment, reference can be made to Figure 3 , Figure 3 is a connection diagram of a first embodiment of a connection circuit of a master control board of the present application. By making each core chip module (i.e., peripheral function module 200) into an independent PCBA (Printed Circuit Board Assembly) unit according to a standard, and by adopting a unified board type and interface design, the peripheral function module 200 can achieve rapid iteration and mass production. However, because the physical size and signal interface of the storage unit 220 are standard designs, no additional PCBA module design is required. However, the master control module 100, DSP unit 330, power amplifier unit 340, Tuner unit 350, Tcon-less unit 360, and WiFi unit 370 can all be designed as PCBA modules to achieve PCBA modularization, i.e., the master control module 100 is designed as a master control PCBA module 100; the DSP unit 330 is designed as a DSP PCBA unit 230; the power amplifier unit 340 is designed as a power amplifier PCBA unit 240; the Tuner unit 350 is designed as a Tuner PCBA unit 250; the Tcon-less unit 360 is designed as a Tcon-less PCBA unit 260; and the WiFi unit 370 is designed as a WiFi PCBA unit 280. It should be noted that the above is only an example of some peripheral function modules 200, and of course more peripheral function modules 200 can also be provided, which will not be described one by one here. Further reference can be made to Figure 4 , Figure 4 is a physical diagram of a master control board (in fact, it is a DSP module diagram, the middle part of the diagram is the installation position of the master control chip 110, and the ports of the master control chip 110 are connected to each peripheral interface in the edge part through wiring to connect the peripheral interface with the peripheral function module 200 to realize the function of the entire master control board). In order to be compatible with master control chips 110 and their peripheral basic hardware configurations of various suppliers, the area of the master control PCB needs to be increased, and additional pins are reserved for compatibility design. Taking the design of a terminal master control board as an example, based on the size of about 20mm*20mm of a commonly used 4K master control chip 110, a master control PCBA substrate with an area of 50mm*50mm can be selected, the pin pitch is selected to be 0.75mm, the pin width is selected to be 0.5mm, and the bottom is provided with power supply and ground partition pads. In addition, a BGA (Ball Grid Array) form can also be selected as the PCBA substrate. Further, based on the design of the master control board, more peripheral function modules 200 can be compatible, and when the master control board is updated, all circuits do not need to be updated, only the modules that need to be updated need to be updated, thereby greatly reducing the update cost of the master control board connection circuit.

[0050] In the embodiment, a master board connection circuit is provided, which comprises a master control module and a peripheral function module designed independently, the master control module is connected with the peripheral function module, the master control module comprises: a master control chip; a peripheral interface unit, a first end of the peripheral interface unit is connected with the master control chip, and a second end of the peripheral interface unit is connected with the peripheral function module. The master board connection circuit connects the peripheral function module through the peripheral interface unit on the master control module, so that the master control module and / or the peripheral function module can be updated independently, thereby avoiding the phenomenon that the entire PCB needs to be redesigned when the core chip or the function module of the master board needs to be updated. The master board connection circuit avoids the problem of updating the entire PCB, thereby reducing the update cost of the master board connection circuit.

[0051] Further, based on the first embodiment of the application, a second embodiment of the master board connection circuit of the application is provided, the peripheral interface unit 120 comprises a power supply interface, an amplifier interface, an audio interface and an HDMI interface.

[0052] Further, the master control chip 110 comprises:

[0053] a power supply port, the power supply port is connected with the first end of the power supply interface through copper wiring;

[0054] an amplifier port, the amplifier port is connected with the first end of the amplifier interface through copper wiring;

[0055] an audio port, the audio port is connected with the first end of the audio interface through copper wiring;

[0056] an HDMI port, the HDMI port is connected with the first end of the HDMI interface through copper wiring.

[0057] Further, the peripheral function module 200 comprises a plurality of independent peripheral function units, the peripheral function unit comprises:

[0058] a power supply circuit, an output end of the power supply circuit is connected with the second end of the power supply interface;

[0059] an amplifier circuit, an input end of the amplifier circuit is connected with the second end of the amplifier interface;

[0060] a digital signal processing circuit, an input end of the digital signal processing circuit is connected with the second end of the audio interface;

[0061] a video control circuit, an input end of the video control circuit is connected with the second end of the HDMI interface.

[0062] In the embodiment, the peripheral interface unit 120 includes a power supply interface, a power amplifier interface, an analog, a digital audio interface and an HDMI interface, and the above interfaces are described as follows. It should be noted that the peripheral interface unit 120 can also include other interfaces, such as an intermediate frequency signal interface, an audio and video interface, a network interface, a DSP interface, a video signal output interface, a digital microphone, a headphone interface, a digital audio interface, a network interface and a USB interface, etc. The above only describes some interfaces, and the interface refers to a connection point of the other peripheral function module 200. The actual performance can be a USB port or a row of soldered interfaces, and the form of the interface is not limited herein. At this time, the first end of each interface is connected to each port on the main control chip 110, such as the power supply port (i.e., the power supply end of the main control chip 110) on the main control chip 110, which is connected to the first end of the power supply interface, i.e., the PCB on the main control module 100 is connected to the power supply port through copper wiring. If the peripheral function module 200 needs to be connected at this time, the output end of the power supply circuit is connected to the second end of the power supply interface to be connected to the power supply circuit in the peripheral function module 200. The first end of a certain interface refers to one side of the main control chip 110, and the second end of a certain interface refers to one side of the peripheral function module 200. When the peripheral function module 200 is not normally connected, the second end of the interface is suspended. When the peripheral function module 200 is connected, the interface is connected to the peripheral function module 200 by soldering or jumper. It should be noted that the above-described multiple independent peripheral function units are only examples of corresponding interfaces, and more circuits can also be included. The above-described circuits are all common circuits, such as a power supply circuit that outputs after DC voltage reduction, a power amplifier circuit that is composed of an input stage, an intermediate amplification stage, an output stage and a power supply, a digital signal processing circuit that is composed of a digital processing chip and related circuits, and a video control circuit that controls the display of a video, such as a common liquid crystal control display circuit. The composition and principle of each circuit are not described in detail herein. At this time, the peripheral function module 200 can be connected to the main control module 100 based on the interface, and includes multiple independent peripheral function units. When the chip or circuit inside the peripheral function unit needs to be updated, the independent peripheral function unit can be directly updated, and the modules in the main control board connection circuit do not need to be updated, thereby reducing the update cost of the main control board connection circuit.

[0063] In an embodiment, reference can be made to Figure 5 , Figure 5The connection schematic diagram of the second embodiment of the connection circuit of the master control board of the application (except for the five square amounts in the middle, the others can be ground interfaces), and the actual scene schematic diagram of the peripheral interface unit 110 in the master control module 100, which can be based on the functions of different peripheral interface units to divide the internal interfaces into various power supply interfaces and first to fourth peripheral interface units. Among them, the first to fourth peripheral interface units can be units that distinguish peripheral interface units according to functions, or can be distinguished according to different positions on the PCB board according to design, which is not limited here. Further, referring to Figure 6 , Figure 6 The connection schematic diagram of the third embodiment of the connection circuit of the master control board of the application, which reserves the peripheral interface unit 110 on the master control module 100, and then connects each peripheral function unit in the peripheral function module 200 through the peripheral interface unit 110. At this time, the peripheral function unit is designed as an integrated PCB circuit, and only needs other PCBA units to align the master PCBA module signal, that is, to determine the function of the PCBA unit, which signal interface or which signal needs to be used, and then connected to the interface in the corresponding peripheral interface unit 110, such as the CI (Common Interface, Common Interface) interface unit 290 connected to the third peripheral interface module 124. By designing the peripheral function unit as an integrated PCB circuit, it is convenient for subsequent rapid and low-cost iteration and update.

[0064] Further, based on the first embodiment and / or the second embodiment of the application described above, the third embodiment of the connection circuit of the master control board of the application is proposed, and the master control module 100 includes:

[0065] The selector 130, the input end of the selector 130 is connected with the output port of the master control chip 110, the output end of the selector 130 is connected with the output interface of the peripheral interface unit 120, and the control end of the selector 130 is connected with the control unit 140 (not marked in the figure). Among them, the output port includes one of the power supply port, the power amplifier port, the audio port and the HDMI port in the master control chip 110, and the output interface includes the idle interface in the peripheral interface unit 120.

[0066] Further, referring to Figure 7 , Figure 7 The connection schematic diagram of the peripheral interface in the connection circuit of the master control board of the application, and referring to Figure 8 , Figure 8As another connection diagram of the peripheral interface in the main control board connection circuit of the application, the control unit 140 includes a control chip 140, and an output end of the control chip 140 is connected with a control end of the selector 130, or the control unit 140 includes a key switch 142, a first end of the key switch 142 is connected with a power supply VCC, and a second end of the key switch 142 is connected with the control end of the selector 130.

[0067] In the embodiment, the main control module 100 includes the selector 130, so that the same function can be realized by selecting different interfaces. Figure 7 As shown in the figure, the selector 130 can be controlled to select whether the DDR (Double Data Rate, synchronous dynamic random access memory) power supply port on the main control chip 110 selects the DDR power supply interface for power supply or the DDR power supply reserved interface for power supply, at this time, the input end of the selector 130 can be connected to the DDR power supply interface or the DDR power supply reserved interface or both interfaces by the control unit 140, so as to ensure the functionality of the whole main control board connection circuit, and the DDR power supply reserved interface can be a reserved interface for other functions, so as to ensure the backup of different interfaces (the interface refers to the connection point in the peripheral interface unit 120, and the port refers to the connection point in the main control chip 110), that is, the output port includes one of the power supply port, the power amplifier port, the audio port and the HDMI port, and the output interface includes the idle interface in the peripheral interface unit 120, that is, there can be multiple backup interfaces for the power supply port, the power amplifier port, the audio port and the HDMI port, so as to ensure the selectivity of the subsequent connection of the peripheral function module 200, for example, one peripheral function module A1 and two peripheral function module A2 are needed for the A device, and two peripheral function module A1 and one peripheral function module A2 are needed for the B device, so the main control module 100 can be designed to include three interfaces, one of which is a selectable interface, that is, in the A device, two interfaces realize the signal output of the peripheral function module A2, and one interface realizes the signal output of the peripheral function module A1; in the B device, two interfaces realize the signal output of the peripheral function module A1, and one interface realizes the signal output of the peripheral function module A2, that is, the selector 130 and the control unit 140 of the selector 130 are used to realize this, at this time, one output or two simultaneous outputs can be realized (that is, the key switch realizes two outputs, and the control chip can realize two simultaneous outputs), so as to ensure the functionality in different use scenarios, and also improve the functionality of the whole main control board connection circuit when the number of peripheral function modules 200 is different.

[0068] Based on the first embodiment, the second embodiment, the third embodiment and / or the fourth embodiment of the main control board connection circuit, the application further provides a main control board connection device, which includes the main control board connection circuit.

[0069] It is worth mentioning that the main control board connecting device according to the embodiment of the application designs a separate main control module and a peripheral function module, so that the peripheral function module is connected through the peripheral interface unit on the main control module, the main control module and / or the peripheral function module can be quickly and separately iteratively updated, thereby avoiding the phenomenon that the designed lines on the whole PCB need to be redesigned when the core chip or the function module of the main control board needs to be updated, and the main control board connecting circuit avoids the problem of updating the designed lines on the whole PCB through the above design method, thereby reducing the update cost of the main control board connecting circuit.

[0070] The device provided by the application provides a main control board connecting device to reduce the update cost of the main control board connecting circuit. Compared with the prior art, the device provided by the application has the same beneficial effects as the main control board connecting circuit provided by the above-mentioned embodiment, and details are not repeated here.

[0071] Further, based on the first embodiment of the application, the second embodiment of the main control board connecting device of the application is provided, the main control board connecting device includes one main printed circuit board and multiple auxiliary printed circuit boards, each auxiliary printed circuit board is provided with a peripheral function module 200 in the main control board connecting circuit, and the main printed circuit board is provided with a main control module 100 in the main control board connecting circuit.

[0072] In an embodiment, the main control board connecting device includes a regionally detachable printed circuit board, the regionally detachable printed circuit board includes multiple detachable circuit design regions, each circuit design region is provided with a peripheral function module 200 in the main control board connecting circuit, and a target circuit design region is provided with a main control module 100 in the main control board connecting circuit, wherein the target circuit design region is a circuit design region at the middle position of the regionally detachable printed circuit board.

[0073] In the embodiment, the main control board connecting device comprises one main printed circuit board and multiple auxiliary printed circuit boards, each of which is provided with a peripheral function module 200 in the main control board connecting circuit, and the main printed circuit board is provided with a main control module 100 in the main control board connecting circuit, that is, the main control module 100 and the peripheral function module 200 are arranged on different printed circuit boards, which can be placed in parallel or in the same horizontal plane, that is, the main control module 100 and the peripheral function module 200 are integrated on different printed circuit boards, and multiple peripheral function modules 200 are also integrated on different printed circuit boards, at this time, when updating is needed, only the printed circuit board corresponding to the peripheral function module 200 is needed, and then the updating can be completed at low cost. In an embodiment, the main control module 100 and the peripheral function module 200 can also be arranged on the same printed circuit board, at this time, the printed circuit board is a regionally detachable printed circuit board, that is, a large printed circuit board is obtained by splicing multiple printed circuit boards, at this time, the appearance of the entire main control board connecting circuit can be ensured, at this time, each circuit design region is provided with a peripheral function module 200 in the main control board connecting circuit, and the target circuit design region is provided with a main control module 100 in the main control board connecting circuit, wherein the target circuit design region is the circuit design region at the middle position of the regionally detachable printed circuit board, and then the updating of the main control board connecting circuit can be completed by directly replacing part of the circuit design region, at the same time, the connection mode can be directly welded at the edge region of different circuit design regions to complete the connection between the peripheral function module 200 and the main control module 100, and then the low-cost updating of the main control board connecting circuit can be ensured, and the appearance and practicability of the main control board connecting circuit design are improved.

[0074] The above only describes some embodiments of the application, and does not limit the patent scope of the application, and any equivalent structural transformation made by using the content of the application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A master board connection circuit, characterized by comprising: The main control board connection circuit comprises a main control module and a peripheral function module which are independently designed, the main control module is connected with the peripheral function module, and the main control module comprises: a main control chip; a peripheral interface unit, a first end of the peripheral interface unit is connected with the main control chip, and a second end of the peripheral interface unit is connected with the peripheral function module.

2. The master board connection circuit of claim 1, wherein, The peripheral interface unit comprises a power supply interface, a power amplifier interface, an audio interface and an HDMI interface.

3. The master board connection circuit of claim 2, wherein, The main control chip comprises: a power supply port, the power supply port is connected with a first end of the power supply interface through copper wiring; a power amplifier port, the power amplifier port is connected with a first end of the power amplifier interface through copper wiring; an audio port, the audio port is connected with a first end of the audio interface through copper wiring; an HDMI port, the HDMI port is connected with a first end of the HDMI interface through copper wiring.

4. The master board connection circuit of claim 2, wherein, The peripheral function module comprises a plurality of independent peripheral function units, and the peripheral function units comprise: a power supply circuit, an output end of the power supply circuit is connected with a second end of the power supply interface; a power amplifier circuit, an input end of the power amplifier circuit is connected with a second end of the power amplifier interface; a digital signal processing circuit, an input end of the digital signal processing circuit is connected with a second end of the audio interface; a video control circuit, an input end of the video control circuit is connected with a second end of the HDMI interface.

5. The master board connection circuit of claim 1, wherein, The peripheral function module is connected with the peripheral interface unit through soldering wire, or the peripheral function module is connected with the peripheral interface unit through a jumper wire.

6. The master board connection circuit according to any one of claims 1 to 5, wherein The main control module comprises: a selector, an input end of the selector is connected with an output port of the main control chip, an output end of the selector is connected with an output interface of the peripheral interface unit, and a control end of the selector is connected with a control unit, wherein the output port comprises one of a power supply port, a power amplifier port, an audio port and an HDMI port in the main control chip, and the output interface comprises an idle interface in the peripheral interface unit.

7. The master board connection circuit of claim 6, wherein, The control unit comprises a control chip, an output end of the control chip is connected with the control end of the selector, or the control unit comprises a key switch, a first end of the key switch is connected with a power supply, and a second end of the key switch is connected with the control end of the selector.

8. A master board connection device, characterized by The main control board connection device comprises the main control board connection circuit according to any one of claims 1 to 7.

9. The master board connection apparatus of claim 8, wherein The main control board connection device comprises one main printed circuit board and a plurality of auxiliary printed circuit boards, each of the auxiliary printed circuit boards is provided with a peripheral function module in the main control board connection circuit, and the main printed circuit board is provided with a main control module in the main control board connection circuit.

10. The master board connection apparatus of claim 8, wherein The main control board connection device comprises a regionally detachable printed circuit board, the regionally detachable printed circuit board comprises a plurality of detachable circuit design regions, each of the circuit design regions is provided with a peripheral function module in the main control board connection circuit, and a target circuit design region is provided with a main control module in the main control board connection circuit, wherein the target circuit design region is a circuit design region at a middle position of the regionally detachable printed circuit board.

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