Control circuit board and control equipment

Abstract

The utility model discloses a control circuit board and control equipment, and the control circuit board comprises a first USB interface which is used for connecting external equipment so as to access a first USB data signal; the main control unit is connected with the power management unit to output a power supply control signal, and the power supply control signal is used for representing a target USB interface which works currently in the plurality of first USB interfaces; the power supply management unit is respectively connected with the first signal forwarding unit and the plurality of first USB interfaces so as to gate the target USB interface and the first signal forwarding unit according to the power supply control signal; the first signal forwarding unit is connected with the main control unit so as to forward the first USB data signal from the target USB interface to the main control unit. According to the control circuit board, data signals of different external devices can be transmitted to the main control unit through the corresponding first USB interfaces in a USB signal mode, line connection between the devices is simplified, and the wire cost is saved.

Description

Technical Field

[0001] This application relates to the field of automated testing, specifically to a control circuit board and control device. Background Technology

[0002] As televisions become increasingly diverse in function, the requirements for the production and testing of television motherboards are also becoming more stringent. Before leaving the factory, television motherboards need to undergo basic function tests such as sound, image, buttons, and remote control. Furthermore, in order to ensure the quality of the products leaving the factory, television motherboard manufacturers also need to send the tested motherboards to end customers for assembly testing. These tests or inspections require the establishment of a testing platform.

[0003] The test platform in the related technology includes multiple controllers, each of which can be used for testing different functions, such as relay control, image acquisition, and audio data acquisition. Multiple controllers need to be connected to the motherboard through corresponding cables to perform the corresponding function tests; however, this leads to complicated wiring connections and higher costs. Utility Model Content

[0004] In view of the above problems, this application provides a control circuit board and control device to solve the above technical problems.

[0005] In a first aspect, this application provides a control circuit board, which includes a main control unit, a power management unit, a first signal forwarding unit, and a plurality of first USB interfaces. The first USB interfaces are used to connect to external devices to receive first USB data signals from the external devices. The main control unit is connected to the power management unit to output a power supply control signal to the power management unit. The power supply control signal is used to identify the target USB interface currently in operation among the plurality of first USB interfaces. The power management unit is connected to the first signal forwarding unit and the plurality of first USB interfaces respectively to select the target USB interface and the first signal forwarding unit according to the power supply control signal. The first signal forwarding unit is connected to the main control unit to forward the first USB data signals from the target USB interface to the main control unit.

[0006] In one possible implementation of this application, the power management unit includes a switch control subunit and power switches respectively connected to a plurality of first USB interfaces; the switch control subunit is connected to the main control unit to generate a switch control signal according to the power supply control signal; one end of each power switch is connected to the corresponding first USB interface, and the other end is connected to the first signal forwarding unit to conduct when the switch control signal is received, so that the target USB interface and the first signal forwarding unit are electrically connected.

[0007] In one possible implementation of this application, the control circuit board further includes a bus communication unit for connecting the communication bus and the master control unit, so as to transmit the communication signals of the master control unit to at least one slave device on the communication bus in the future.

[0008] In one possible implementation of this application, the bus communication unit includes a serial interface and a communication subunit; the communication subunit is connected to the master control unit and the serial interface respectively to convert the communication signal into a bus communication signal and transmit it to the serial interface; the serial interface is connected to the communication bus to transmit the received bus communication signal to the slave device.

[0009] In one possible implementation of this application, the control circuit board further includes an infrared emitting unit connected to the main control unit to generate an infrared wave signal for the device under test based on an infrared trigger signal from the main control unit.

[0010] In one possible implementation of this application, the control circuit board further includes a relay control unit connected to the main control unit to control the relays connected to the device under test to be turned on or off according to the control signals from the main control unit.

[0011] In one possible implementation of this application, the control circuit board further includes a second signal forwarding unit and a second USB interface; the second signal forwarding unit is connected to the first signal forwarding unit and the second USB interface respectively, so as to obtain a second USB data signal according to the first USB data signal and output it to the second USB interface; the second USB interface is used to connect to an external control device to transmit the second USB data signal to the external control device.

[0012] In one possible implementation of this application, the control circuit board further includes a signal conversion unit and a video signal input interface; the video signal input interface is used to connect to the device under test (DUT) to receive video signals from the DUT; the signal conversion unit is connected to the video signal input interface and the second signal forwarding unit respectively to convert the video signal into a third USB data signal and output it to the second signal forwarding unit; the second signal forwarding unit is also used to transmit the third USB data signal to an external control device connected to the second USB interface.

[0013] In one possible implementation of this application, the control circuit board further includes an audio signal selection unit and at least one audio signal input interface; the audio signal input interface is used to connect to the device under test (DUT) to receive audio signals from the DUT; the audio signal selection unit is connected to the signal conversion unit and the at least one audio signal input interface respectively, to select the signal conversion unit and the target audio signal input interface according to the strobe signal, and to transmit the target audio signal from the target audio signal input interface to the signal conversion unit; the signal conversion unit is also used to convert the target audio signal into a fourth USB data signal and output it to the second signal forwarding unit; the second signal forwarding unit is also used to transmit the fourth USB data signal to an external control device connected to the second USB interface.

[0014] Secondly, this application also provides a control device, which includes a device body and a control circuit board disposed in any possible implementation of the first aspect of the device body.

[0015] From the above, it can be concluded that this application has the following beneficial effects:

[0016] In this application, a first USB data signal from an external device is received through a first USB interface, and a power management unit selects the target USB interface and the first signal forwarding unit according to a power supply control signal, so that the first signal forwarding unit can forward the first USB data signal from the target USB interface to the main control unit. This enables data signals from different external devices to be transmitted to the main control unit in the form of USB signals through the corresponding first USB interface, simplifying the wiring connection between devices and saving cable costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the first structure of the control circuit board provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of a power management unit provided in an embodiment of this application;

[0020] Figure 3 This is a schematic diagram of a second structure of the control circuit board provided in the embodiments of this application;

[0021] Figure 4This is a schematic diagram of a bus communication unit provided in an embodiment of this application;

[0022] Figure 5 This is a schematic diagram of the third structure of the control circuit board provided in the embodiments of this application;

[0023] Figure 6 This is a schematic diagram of the fourth structure of the control circuit board provided in the embodiments of this application;

[0024] Figure 7 This is a schematic diagram of the fifth structure of the control circuit board provided in the embodiments of this application;

[0025] Figure 8 This is a schematic diagram of the sixth structure of the control circuit board provided in the embodiments of this application. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] To enable those skilled in the art to better understand the solutions of this application, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0028] In the embodiments of this application, it should be noted that, in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0029] Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0030] In the description of the embodiments of this application, the words "example" or "for example" are used to indicate exemplification, illustration, or description. Any embodiment or design described as "example" or "for example" in the embodiments of this application is not to be construed as being more preferred or having more advantages than another embodiment or design. The use of the words "example" or "for example" is intended to present relative concepts in a clear manner.

[0031] Furthermore, in the embodiments of this application, "multiple" refers to two or more. Therefore, in the embodiments of this application, "multiple" can also be understood as "at least two". "At least one" can be understood as one or more, such as one, two, or more. For example, including at least one means including one, two, or more, and is not limited to which ones are included. For example, including at least one of A, B, and C, then it could include A, B, C, A and B, A and C, B and C, or A and B and C.

[0032] It should be noted that in the embodiments of this application, "connection" can be understood as electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components.

[0033] Before introducing the control circuit board and control device of this application, we will first introduce the relevant background information of the embodiments of this application.

[0034] In related technologies, the controllers used for testing TV motherboards have relatively limited functions. Some controllers are dedicated to serial port control, some to image acquisition, and others to operation control. To perform functional testing on the TV motherboard, each controller needs to be connected to the motherboard using its corresponding dedicated cable, resulting in complex wiring and high-cost dedicated cables.

[0035] Based on this, the present application provides a control circuit board and a control device. The control circuit board is connected to an external device via a USB interface, receives the USB data signal from the external device, and forwards the collected USB data signal to the main control unit through a first signal forwarding unit. This enables data signals from different external devices to be transmitted to the main control unit in the form of USB signals through the corresponding USB interface, simplifying the wiring connection between devices and saving wiring costs.

[0036] The control circuit board and control equipment provided in this application will be described in detail below.

[0037] First, this application provides a control circuit board, please refer to... Figure 1 , Figure 1This is a schematic diagram of a control circuit board provided in an embodiment of this application. The control circuit board 100 may include a main control unit 110, a power management unit 120, a first signal forwarding unit 130, and multiple first USB interfaces, for example... Figure 1 The first USB interface a1401 and the first USB interface b1402 shown in the figure can be used to connect to an external device (not shown) to receive the first USB data signal from the external device; the main control unit 110 can be connected to the power management unit 120 to output a power supply control signal to the power management unit 120; wherein, the power supply control signal can be used to identify the target USB interface currently in operation among the multiple first USB interfaces; the power management unit 120 can be connected to the first signal forwarding unit 130 and the multiple first USB interfaces respectively to select the target USB interface and the first signal forwarding unit 130 according to the power supply control signal; the first signal forwarding unit 130 can be connected to the main control unit 110 to forward the first USB data signal from the target USB interface to the main control unit 110.

[0038] In this embodiment, each first USB interface is connected to a corresponding external device via a USB cable, thereby receiving a first USB data signal from the external device. The first USB interface can be any existing USB interface specification, such as a USB 2.0 interface or a USB 3.0 interface.

[0039] The external device can be a host computer, keyboard, mouse, camera, network card, etc. If the external device can output a USB format signal, it can connect to the corresponding first USB interface through its own USB interface. If the signal output by the external device is not in USB format, the output interface of the external device can be connected to a signal conversion module. The output interface of the signal conversion module is connected to the first USB interface. The signal conversion module converts the output signal of the external device into a first USB data signal and then outputs it to the first USB interface.

[0040] In this embodiment, the main control unit 110 can be any existing microcontroller unit (MCU), microcontroller, or control chip, etc., which can be determined according to the actual application scenario and is not limited here. The main control unit 110 can generate a power supply control signal and output it to the power management unit 120 based on the received channel configuration signal. The channel configuration signal can be a signal sent by the user, through which the user can inform the main control unit 110 which USB interface is currently in operation, so that the main control unit 110 can generate a power supply control signal and output it to the power management unit 120 based on the channel configuration signal.

[0041] The power management unit 120 is connected to the main control unit 110 and selects the target USB interface and the first signal forwarding unit 130 according to the received power supply control signal. For example, if the first working USB interface is the first USB interface a1401, the power management unit 120 selects the first USB interface a1401 and the first signal forwarding unit 130 according to the power supply control signal, so that the first USB data signal connected to the first USB interface a1401 can be transmitted to the first signal forwarding unit 130.

[0042] The first signal forwarding unit 130 is connected to the main control unit 110 and can forward the received first USB data signal to the main control unit 110, realizing the transmission of the first USB data signal. This allows the main control unit 110 to perform subsequent control processing based on the first USB data signal, such as controlling the on / off state of relays or serial communication. The first signal forwarding unit 130 can be any existing multi-port repeater, hub, etc., such as a USB 2.0 hub chip. The specific type can be determined according to the actual application scenario and is not limited here.

[0043] In this embodiment, a first USB data signal from an external device is received through a first USB interface, and the power management unit 120 selects the target USB interface and the first signal forwarding unit 130 according to the power supply control signal. This allows the first signal forwarding unit 130 to forward the first USB data signal from the target USB interface to the main control unit 110. This enables data signals from different external devices to be transmitted to the main control unit 110 in the form of USB signals through the corresponding first USB interface. USB data signal acquisition can be achieved through a common USB cable, simplifying the wiring connection between devices and saving cable costs.

[0044] Next, continue with Figure 1 The unit modules shown are described in detail, as well as the specific implementation methods that may be used in practical applications.

[0045] like Figure 2 As shown, in some embodiments of this application, the power management unit 120 may include a switch control subunit 1201 and power switches respectively connected to a plurality of first USB interfaces, such as a first power switch a connected to a first USB interface a1401 and a second power switch b connected to a first USB interface b1402; the switch control subunit 1201 may be connected to the main control unit 110 to generate a switch control signal according to the power supply control signal; one end of each power switch is connected to the corresponding first USB interface, and the other end is connected to the first signal forwarding unit 130, so as to conduct when the switch control signal is received, so that the target USB interface and the first signal forwarding unit 130 are electrically connected.

[0046] In this embodiment, each power switch corresponds one-to-one with a first USB interface, and the switch control subunit 1201 can store the correspondence between the power switches and the first USB interfaces. The switch control subunit 1201 can determine the currently operating first USB interface based on the power supply control signal, and then determine the power switch that needs to be turned on based on the currently operating first USB interface and the stored correspondence. The switch control subunit 1201 is connected or coupled to the control terminal of each power switch, so that after determining the power switch that needs to be turned on, it outputs a switch control signal to that power switch, thereby enabling the power switch to turn on in response to the switch control signal.

[0047] For example, if the first USB interface currently in operation, which is also the target USB interface, is the first USB interface a1401, then the switch control subunit 1201 can generate a switch control signal in response to the power supply control signal and output it to the first power supply switch a, so that the first power supply switch a is turned on, thereby electrically connecting the first USB interface a1401 and the first signal forwarding unit 130, and transmitting the first USB data signal to the first signal forwarding unit 130.

[0048] In this embodiment, the switch control subunit 1201 can be any existing power management circuit. The power management circuit can control the power supply to the first USB interface by controlling the power supply switch to be turned on or off, thereby realizing the switching of the first USB interface.

[0049] Please see Figure 3 In some embodiments of this application, the control circuit board 100 may further include a bus communication unit 150, which can be used to connect the communication bus and the master control unit 110, so that the communication signals of the master control unit 110 can be transmitted to at least one slave device on the communication bus, such as... Figure 3 The first slave device 201 and the second slave device 202 are shown in the figure.

[0050] In this embodiment, the bus communication unit 150 can be connected to the main control unit 110 to receive communication signals from the main control unit 110. At the same time, the bus communication unit 150 is also connected to a communication bus, which can also be connected to other devices. After the bus communication unit 150 transmits the communication signal to the communication bus, the other devices connected to the communication bus can obtain the communication signal as slave devices, thereby realizing communication between the control circuit board 100 and the slave devices on the communication bus and controlling the slave devices.

[0051] The communication bus can be any existing communication bus, such as RS485 bus, CAN bus, etc.; it is understood that in some other embodiments, the number of slave devices connected to the communication bus can be 1, 3 or more, which can be determined according to the actual application scenario, and is not limited here.

[0052] like Figure 4 As shown, in some embodiments of this application, the bus communication unit 150 may include a serial interface 1501 and a communication subunit 1502; the communication subunit 1502 may be connected to the master control unit 110 and the serial interface 1501 respectively, so as to convert the communication signal into a bus communication signal and transmit it to the serial interface 1501; the serial interface 1501 is connected to the communication bus to transmit the received bus communication signal to the slave device.

[0053] In this embodiment of the application, the communication subunit 1502 can be an RS485 chip, a CAN chip, an RS232 chip, etc., and correspondingly, the serial interface 1501 can be an RS485 interface, a CAN interface, an RS232 interface, etc.

[0054] The communication subunit 1502 is connected to the main control unit 110 and the serial interface 1501 respectively. The communication signal of the main control unit 110 is converted into a bus communication signal that is compatible with the communication protocol of the current communication bus and transmitted to the serial interface 1501. The serial interface 1501 transmits the bus communication signal to the communication bus, so that each slave device on the communication bus can obtain the bus communication signal based on the communication bus and respond to the bus communication signal to perform corresponding subsequent operations.

[0055] The control circuit board 100 in this embodiment can be expanded in function and control slave devices on the communication bus through the reserved serial interface 1501, thus enriching the application scenarios.

[0056] like Figure 5 As shown, in some embodiments of this application, the control circuit board 100 may further include an infrared emitting unit 160, which is connected to the main control unit 110 to generate an infrared wave signal for the device under test (not shown) based on an infrared trigger signal from the main control unit 110.

[0057] In this embodiment of the application, the device under test may be a television set equipped with a motherboard under test, or other devices that can respond to infrared wave signals and perform corresponding actions.

[0058] The infrared emitting unit 160 can be any existing infrared emitter. Understandably, the main control unit 110 can generate an infrared trigger signal based on the received first USB data signal or other signals. The infrared emitting unit 160 can be connected to the general purpose input / output (GPIO) port of the main control unit 110. The main control unit 110 outputs the infrared trigger signal through this GPIO port, thereby enabling the infrared emitting unit 160 to emit an infrared wave signal in response to the infrared trigger signal output by the main control unit 110, and to control the device under test through this infrared wave signal.

[0059] Please continue reading. Figure 5 In some embodiments of this application, the control circuit board 100 may further include a relay control unit 170, which may be connected to the main control unit 110 to control the relays connected to the device under test to be turned on or off according to the control signals from the main control unit 110.

[0060] In this embodiment, the main control unit 110 can also be connected to the relay control unit 170 via an IO port. The main control unit 110 can generate a control signal based on the received first USB data signal or other signals and output it to the relay control unit 170. The relay control unit 170 can control the relay of the device under test to be turned on or off in response to the control signal, thereby realizing relay control.

[0061] like Figure 6 As shown, in some embodiments of this application, the control circuit board 100 may further include a second signal forwarding unit 180 and a second USB interface 1403; the second signal forwarding unit 180 may be connected to the first signal forwarding unit 130 and the second USB interface 1403 respectively, so as to obtain a second USB data signal according to the first USB data signal and output it to the second USB interface 1403; the second USB interface 1403 may be used to connect to an external control device 300 to transmit the second USB data signal to the external control device 300.

[0062] In this embodiment, the second signal forwarding unit 180 can be connected to the first signal forwarding unit 130, receive the first USB data signal from the first signal forwarding unit 130, and obtain the second USB data signal based on the first USB data signal, outputting it to the second USB interface 1403. The second signal forwarding unit 180 can also be any existing multi-port repeater, hub, etc., such as a USB 3.0 hub chip. The specific type can be determined according to the actual application scenario and is not limited here.

[0063] The second USB interface 1403 transmits the received second USB data signal to the external control device 300, which can be a control computer, such as a laptop, microcomputer, card computer, etc.

[0064] Understandably, in some embodiments, the second signal forwarding unit 180 may also be connected to a USB interface, such as the first USB interface c1404. The first USB interface c1404 may also be connected to an external device. Thus, when the power management unit 120 selects the first USB interface c1404 and the second signal forwarding unit 180, that is, when the first USB interface c1404 and the second signal forwarding unit 180 are electrically connected, the first USB data signal of the external device can also be directly transmitted to the second signal forwarding unit 180. After processing by the second signal forwarding unit 180, such as shaping and amplification, the second USB data signal is output to the second USB interface 1403 and transmitted to the external control device 300 via the second USB interface 1403.

[0065] like Figure 7 As shown, in some embodiments of this application, the control circuit board 100 may further include a signal conversion unit 190 and a video signal input interface 1405; the video signal input interface 1405 may be used to connect to the device under test to receive video signals from the device under test; the signal conversion unit 190 may be connected to the video signal input interface 1405 and the second signal forwarding unit 180 respectively to convert the video signal into a third USB data signal and output it to the second signal forwarding unit 180; the second signal forwarding unit 180 may also be used to transmit the third USB data signal to the external control device 300 connected to the second USB interface.

[0066] In this embodiment, the video signal input interface 1405 can be any existing video signal transmission interface, such as High Definition Multimedia Interface (HDMI), DisplayPort (DP), etc. The specific interface can be determined according to the actual application scenario, and is not limited here.

[0067] The video signal output interface of the device under test is connected to the video signal input interface 1405, so that the video signal of the device under test, such as the motherboard of the TV under test, can be received and the video signal can be transmitted to the signal conversion unit 190.

[0068] After receiving the video signal, the signal conversion unit 190 can convert the video signal into a third USB data signal and transmit it to the second signal forwarding unit 180. The second signal forwarding unit 180 then transmits the third USB data signal to the external control device 300 via the second USB interface 1403.

[0069] As an example, if the video signal input interface 1405 is an HDMI input interface, then the video signal is an HDMI video signal. The signal conversion unit 190 can be any existing HDMI to USB chip, which can convert the HDMI video signal into a third USB data signal and output it to the second signal forwarding unit 180, and then transmit it to the external control device 300 via the second signal forwarding unit 180.

[0070] Please continue reading. Figure 7 In some embodiments of this application, the control circuit board 100 may further include an audio signal selection unit 1901 and at least one audio signal input interface 1406; the audio signal input interface 1406 may be used to connect to a device under test (DUT) to receive audio signals from the DUT; the audio signal selection unit 1901 may be connected to the signal conversion unit 190 and at least one audio signal input interface 1406 respectively, to select the signal conversion unit 190 and the target audio signal input interface according to the selection signal, and transmit the target audio signal from the target audio signal input interface to the signal conversion unit 190; the signal conversion unit 190 may also be used to convert the target audio signal into a fourth USB data signal and output it to the second signal forwarding unit 180; the second signal forwarding unit 180 may also be used to transmit the fourth USB data signal to the external control device 300 connected to the second USB interface 1403.

[0071] Understandably, the audio signal of a television set can typically be output from a speaker, headphones, coaxial audio, or optical fiber audio. Therefore, in this embodiment, the audio signal input interface 1406 can be a speaker input interface connected to the speaker output, a headphone input interface connected to the headphone output, a coaxial audio input interface connected to the coaxial audio output, and an optical fiber audio input interface connected to the optical fiber audio output. Each audio input interface can be connected to the audio signal selection unit 1901 to transmit the corresponding audio signal to the audio signal selection unit 1901.

[0072] The audio signal selection unit 1901 can select between each audio input interface and the signal conversion unit 190 according to the user-configured audio input channel to achieve the transmission of the target audio signal. For example, if the user-configured audio input channel is a speaker input interface, then the target audio signal input interface is the speaker input interface. The audio signal selection unit 1901 selects between the speaker input interface and the signal conversion unit 190, transmitting the audio signal from the speaker input interface to the signal conversion unit 190.

[0073] After receiving the audio signal, the signal conversion unit 190 converts the audio signal into a fourth USB data signal and outputs it to the second signal forwarding unit 180. The second signal forwarding unit 180 then transmits the fourth USB data signal to the external control device 300.

[0074] In this embodiment, the audio signal can be an I2S audio signal, and the audio signal selection unit 1901 can be any existing I2S selection circuit. The target audio signal is selected and output to the signal conversion unit 190, which converts it into a fourth USB data signal and outputs it to the external control device 300.

[0075] like Figure 8 As shown, in some embodiments of this application, the control circuit board 100 may also be equipped with a display screen 400, which can be connected to the main control unit 110 via an I2C bus to receive and display information that reflects the status or behavior of the main control unit 110.

[0076] A USB 2.0 to 2-channel serial port chip can also be connected between the first signal forwarding unit 130 and the main control unit 110. This USB 2.0 to 2-channel serial port chip can be connected to a serial port socket, so that the first USB data signal can be converted into a serial communication signal and then output to other devices through the serial port socket.

[0077] Based on the above embodiments, this application also provides a control device, which may include a device body and a component disposed on the device body, such as... Figures 1 to 7 The control circuit board corresponding to any embodiment.

[0078] The control device can be an automated testing apparatus, certification testing control platform, or system used for testing television motherboards.

[0079] Because the control device includes the present application, as described in this application Figures 1 to 8 The control circuit board corresponding to any embodiment can therefore realize the present application as described above. Figures 1 to 8 For all the beneficial effects that the control circuit board can achieve in any embodiment, please refer to the preceding description, which will not be repeated here.

[0080] In one application scenario, this control board can be used in Google's XTS certified automation control devices, serving as a tool for TV upgrades, power on / off, audio acquisition, and USB-ADB connection / disconnection.

[0081] In another application scenario, the control circuit board can be used for automated testing of TVs. For example, a TV test box can be made using the control circuit board, which combines a micro control computer, a TV motherboard, and an image signal acquisition board. Then, with the help of a control server, a cloud testing laboratory can be built to perform automated testing of TVs.

[0082] In another application scenario, the control circuit board can also be used to implement cloud field testing equipment. This cloud field testing equipment includes a control circuit board and a PC motherboard. The control circuit board and the PC motherboard are combined to form a complete product that can be mailed to the customer. The TV motherboard can be controlled through a remote control system to record local RF signal streams, enabling cross-domain RF signal stream recording, low-latency playback of video and audio across domains, and physical control of the computer to reproduce the actual usage process of the TV system, thereby reducing testing costs.

[0083] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although this application has disclosed preferred embodiments as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A control circuit board, characterized by, The control circuit board comprises a master control unit, a power management unit, a first signal forwarding unit and a plurality of first USB interfaces, the first USB interfaces are used for connecting external devices to access first USB data signals from the external devices; The master control unit is connected with the power management unit to output a power supply control signal to the power management unit; wherein the power supply control signal is used to represent a target USB interface currently working in the plurality of first USB interfaces; The power management unit is connected with the first signal forwarding unit and the plurality of first USB interfaces respectively to select the target USB interface and the first signal forwarding unit according to the power supply control signal; The first signal forwarding unit is connected with the master control unit to forward the first USB data signals from the target USB interface to the master control unit.

2. The control circuit board of claim 1, wherein, The power management unit comprises a switch control subunit and a plurality of power supply switches respectively connected with the first USB interfaces; The switch control subunit is connected with the master control unit to generate a switch control signal according to the power supply control signal; One end of each of the power supply switches is connected with the corresponding first USB interface, and the other end is connected with the first signal forwarding unit to conduct when the switch control signal is received, so that the target USB interface and the first signal forwarding unit are electrically conducted.

3. The control circuit board of claim 1, wherein, The control circuit board further comprises a bus communication unit, the bus communication unit is used for connecting a communication bus and the master control unit to transmit a communication signal from the master control unit to at least one slave device on the communication bus.

4. The control circuit board of claim 3, wherein, The bus communication unit comprises a serial interface and a communication subunit; The communication subunit is connected with the master control unit and the serial interface respectively to convert the communication signal into a bus communication signal and transmit the bus communication signal to the serial interface; The serial interface is connected with the communication bus to transmit the received bus communication signal to the slave device.

5. The control circuit board of claim 1, wherein, The control circuit board further comprises an infrared emission unit, the infrared emission unit is connected with the master control unit to generate an infrared wave signal for a device under test according to an infrared trigger signal from the master control unit.

6. The control circuit board of claim 1, wherein, The control circuit board further comprises a relay control unit, the relay control unit is connected with the master control unit to control a relay connected with the device under test to be turned on or turned off according to a control signal from the master control unit.

7. The control circuit board according to any one of claims 1 to 6, characterized in that, The control circuit board further comprises a second signal forwarding unit and a second USB interface; The second signal forwarding unit is connected with the first signal forwarding unit and the second USB interface respectively to obtain a second USB data signal from the first USB data signal and output the second USB data signal to the second USB interface; The second USB interface is used for connecting an external control device to transmit the second USB data signal to the external control device.

8. The control circuit board of claim 7, wherein, The control circuit board further comprises a signal conversion unit and a video signal input interface; The video signal input interface is used for connecting a device under test to access a video signal from the device under test; The signal conversion unit is connected with the video signal input interface and the second signal forwarding unit respectively, and is configured to convert the video signal into a third USB data signal and output the third USB data signal to the second signal forwarding unit; The second signal forwarding unit is further configured to transmit the third USB data signal to the external control device connected to the second USB interface.

9. The control circuit board of claim 8, wherein, The control circuit board further comprises an audio signal selection unit and at least one audio signal input interface; The audio signal input interface is configured to connect the device under test, so as to access an audio signal from the device under test; The audio signal selection unit is connected with the signal conversion unit and the at least one audio signal input interface respectively, and is configured to transmit a target audio signal from a target audio signal input interface to the signal conversion unit according to a selection signal; The signal conversion unit is further configured to convert the target audio signal into a fourth USB data signal and output the fourth USB data signal to the second signal forwarding unit; The second signal forwarding unit is further configured to transmit the fourth USB data signal to the external control device connected to the second USB interface.

10. A control device characterized by comprising: The control circuit board comprises a device main body and a control circuit board as claimed in any one of claims 1-9 arranged in the device main body.

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