A semi-automatic test circuit, device and method for Type C double blind plug display function

Abstract

The present invention discloses a semi-automatic test circuit, device and method for TypeC double blind plug display function, including: a main control module, a power module, a signal extension module, a first signal conversion module, a second signal conversion module, a first switching switch module, a second switching switch module, a first TypeC wire and a second TypeC wire; the signal extension module receives an HDMI signal source and expands the HDMI signal source into a multi-channel HDMI signal output; the signal conversion module converts the HDMI signal into a TypeC signal; the switching switch module implements the communication switching of the TypeC signal output by the signal conversion module; the main control module implements the video transmission test, positive and negative plug test, voltage regulation test and power role switching test of the TypeC double blind plug display. The present invention uses a double TypeC wire to be fixedly connected to the TYPEC interface of the test equipment, and only needs to connect the TYPEC port of the tested equipment to complete the video transmission test, positive and negative plug test, voltage regulation test and power role switching test of the display, avoid multiple plugging and unplugging, and the test efficiency is high.

Description

Technical Field

[0001] The present invention relates to the field of TypeC blind plugging technology, and in particular to a semi-automatic testing circuit, device and method for TypeC double blind plugging display function. Background Art

[0002] With the popularity of USB Type C interface, more and more mobile phones, notebooks and computers support video output through the Type C interface. This small and sophisticated interface is likely to replace the traditional HDMI and DisplayPort interfaces. The production test requirements of Type C devices generally include the stability of Type C interface video transmission, the stability of Type C interface power supply or external voltage regulation, Type C protocol communication, USB communication stability, etc., so as to accurately judge the quality of the product.

[0003] In the past, Type C double blind plug display device tests all used computers, notebooks and mobile phones with Type C interfaces as devices for testing double blind plug. This test method not only requires plugging and unplugging each interface and flipping the wire, but also has cumbersome test steps and low efficiency. In addition, it is not possible to perform programmable tests on the power supply capacity of the device. The equipment is expensive and the cost of large-scale testing is high. Therefore, inventing a reliable and efficient semi-automatic test circuit for Type C double blind plug display function is an urgent problem to be solved by technicians in this field. Summary of the invention

[0004] The purpose of the present application is to provide a semi-automatic test circuit, device and method for the function of a TypeC double-blind plug-in display. In this solution, a signal extension module is used to receive an HDMI signal source and expand the HDMI signal source into four-way HDMI signal output; the first signal conversion module is used to convert two-way HDMI signals into TypeC signals, and the first switching switch module is used to realize the communication switching of the TypeC signal output by the first signal conversion module; the second signal conversion module is used to convert two-way HDMI signals into TypeC signals, and the second switching switch module is used to realize the communication switching of the TypeC signal output by the second signal conversion module; the main control module is used to realize the video transmission test, forward and reverse plug-in test, voltage regulation test and power role switching test of the TypeC double-blind plug-in display, so that the present application avoids multiple plugging and unplugging, is easy to operate, and has high testing efficiency.

[0005] In order to solve the above technical problems, the present application provides a semi-automatic test circuit for Type C double blind plug display function, including a main control module, a power module, a signal expansion module, a first signal conversion module, a second signal conversion module, a first switching switch module, a second switching switch module, a first Type C wire and a second Type C wire;

[0006] The first end of the first Type C wire and the first end of the second Type C wire are both electrically connected to the Type C double blind plug display, the second end of the first Type C wire is electrically connected to the first switching module, and the second end of the second Type C wire is electrically connected to the second switching module;

[0007] The power module is electrically connected to the main control module, the signal expansion module, the first signal conversion module, the second signal conversion module, the first switch module, the second switch module, the first Type C wire and the second Type C wire respectively;

[0008] The main control module is electrically connected to the signal expansion module, the first signal conversion module and the second signal conversion module respectively, and the signal expansion module is electrically connected to the first signal conversion module and the second signal conversion module respectively;

[0009] The first signal conversion module is electrically connected to the first switching module; the second signal conversion module is electrically connected to the second switching module;

[0010] The signal expansion module is used to receive an HDMI signal source and expand the HDMI signal source into four HDMI signal outputs;

[0011] The first signal conversion module is used to convert the two HDMI signals into Type-C signals, and the first switching switch module is used to implement communication switching of the Type-C signals output by the first signal conversion module;

[0012] The second signal conversion module is used to convert the two HDMI signals into Type-C signals, and the second switching switch module is used to implement communication switching of the Type-C signals output by the second signal conversion module;

[0013] The main control module is used to implement video transmission test, forward and reverse insertion test, voltage regulation test and power role switching test on the TypeC double blind plug display.

[0014] Preferably, the semi-automatic test circuit of the Type C double blind plug display function further includes a key selection module, and the key selection module includes a first key selection unit and a second key selection unit;

[0015] The main control module is electrically connected to the first button selection unit and the second button selection unit respectively;

[0016] When the first button selection unit is pressed, the power supply of the main control module and the power supply of the first Type-C cable are grounded together;

[0017] When the second button selection unit is pressed, the power supply of the main control module and the power supply of the second Type C cable are grounded.

[0018] Preferably, the signal extension module includes a signal distributor, a first signal extension unit, a second signal extension unit, a third signal extension unit and a fourth signal extension unit;

[0019] The signal distributor is electrically connected to the first signal extension unit, the second signal extension unit, the third signal extension unit and the fourth signal extension unit, respectively; the first signal conversion module is electrically connected to the first signal extension unit and the second signal extension unit, respectively; and the second signal conversion module is electrically connected to the third signal extension unit and the fourth signal extension unit, respectively.

[0020] Preferably, the semi-automatic test circuit of the Type C double blind plug display function further includes an indication module, and the indication module includes a first indication unit and a second indication unit;

[0021] The first indicating unit is electrically connected to the main control module, and the second indicating unit is electrically connected to the signal conversion module.

[0022] Preferably, the semi-automatic test circuit of the Type C double blind plug display function further includes a third switching switch module;

[0023] The third switching switch module is electrically connected to the first signal conversion module, the second signal conversion module and the USB interface of the host computer respectively.

[0024] In order to solve the above technical problems, the present application provides a semi-automatic testing device for TypeC double blind plug display function, including a semi-automatic testing circuit for TypeC double blind plug display function.

[0025] In order to solve the above technical problems, the present application provides a semi-automatic test method for Type C double blind plug display function, which is applied to a semi-automatic test circuit for Type C double blind plug display function, and the method includes:

[0026] Connecting a testing device and a device under test through the first Type-C cable and the second Type-C cable;

[0027] Power on and control the main control module to obtain a first key signal input by a user;

[0028] According to the first key signal, control the power supply of the first Type C cable to share a common ground with the power supply of the main control module;

[0029] Control the signal extension module to receive an HDMI signal source, and set the first signal transmission path corresponding to the first Type C cable on the first signal conversion module to DRP;

[0030] Control the main control module to open a first signal transmission path output by the first Type C cable through the first signal conversion module;

[0031] Control the main control module to close the second signal transmission path output by the second Type C cable through the second signal conversion module;

[0032] Observe and record the display image data on the Type C double blind plug display to complete the video transmission test of the Type C double blind plug display.

[0033] Preferably, the method further comprises

[0034] Control the signal extension module to receive an HDMI signal source, and set the first signal transmission path corresponding to the first Type C cable on the first signal conversion module to DRP;

[0035] Control the main control module to open a first signal transmission path output by the first Type C cable through the first signal conversion module;

[0036] Control the main control module to close the second signal transmission path output by the second Type C cable through the second signal conversion module;

[0037] Control the first switch module to sequentially select CC1 and CC2 for outputting the Type C signal output by the first signal transmission path;

[0038] Observe and record the display image data twice on the Type C double blind plug display to complete the forward and reverse plug test of the Type C double blind plug display.

[0039] Preferably, the method further comprises:

[0040] Control the signal extension module to receive the HDMI signal source, and set the first signal transmission path corresponding to the first Type C cable on the first signal conversion module as a discharge source;

[0041] Setting the second signal transmission path on the second signal conversion module corresponding to the second Type C wire as a receiving power source;

[0042] Control the first signal conversion module to request the external device to output the maximum voltage level;

[0043] Acquiring a voltage change value on the first signal transmission path;

[0044] The highest voltage level output by the first signal transmission path is obtained according to the voltage change value, and the voltage regulation test is completed.

[0045] Preferably, the method further comprises:

[0046] Setting the first signal transmission path on the first signal conversion module corresponding to the first Type C wire as a discharge source;

[0047] After observing and recording the display image data on the Type C double blind plug display, the first signal transmission path corresponding to the first Type C wire on the first signal conversion module is set as a power source to complete the power role switching test.

[0048] A semi-automatic test circuit, device and method for a TypeC double blind plug display function of the present invention have the following beneficial effects. The semi-automatic test circuit for a TypeC double blind plug display function disclosed by the present invention includes: a main control module, a power module, a signal extension module, a first signal conversion module, a second signal conversion module, a first switching switch module, a second switching switch module, a first TypeC wire and a second TypeC wire; the signal extension module is used to receive an HDMI signal source and expand the HDMI signal source into four HDMI signal outputs; the first signal conversion module is used to convert two HDMI signals into TypeC signals, and the first switching switch module is used to realize communication switching of the TypeC signal output by the first signal conversion module; the second signal conversion module is used to convert two HDMI signals into TypeC signals, and the second switching switch module is used to realize communication switching of the TypeC signal output by the second signal conversion module; the main control module is used to realize video transmission test, forward and reverse insertion test, voltage regulation test and power role switching test of the TypeC double blind plug display. Therefore, the present invention uses dual Type C wires to be fixedly connected to the two TYPE C interfaces of the test equipment. It only needs to connect the two TYPE C ports of the tested equipment to complete the video transmission test, forward and reverse insertion test, voltage regulation test and power role switching test of the Type C double blind plug display, avoiding multiple plugging and unplugging, convenient operation and high test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0050] Figure 1It is a structural schematic diagram of a semi-automatic test circuit for Type C double blind plug display function according to a preferred embodiment of the present invention;

[0051] Figure 2 It is a structural schematic diagram of a semi-automatic test circuit for Type C double blind plug display function according to a preferred embodiment of the present invention;

[0052] Figure 3 It is a circuit schematic diagram of a semi-automatic test circuit of a Type C double blind plug display function in a preferred embodiment of the present invention;

[0053] Figure 4 It is a flow chart of a semi-automatic test circuit of a Type C double blind plug display function of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0054] The core of this application is to provide a semi-automatic testing circuit, device and method for the function of a TypeC double blind plug display. In this solution, a signal extension module is used to receive an HDMI signal source and expand the HDMI signal source into four HDMI signal outputs; the first signal conversion module is used to convert two HDMI signals into TypeC signals, and the first switching switch module is used to realize the communication switching of the TypeC signal output by the first signal conversion module; the second signal conversion module is used to convert two HDMI signals into TypeC signals, and the second switching switch module is used to realize the communication switching of the TypeC signal output by the second signal conversion module; the main control module is used to realize the video transmission test, forward and reverse plug test, voltage regulation test and power role switching test of the TypeC double blind plug display, so that this application avoids multiple plugging and unplugging, is easy to operate, and has high testing efficiency.

[0055] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] See also Figure 1 , Figure 1 A structural schematic diagram of a semi-automatic test circuit for a Type C double blind plug display function provided in the present application, including a main control module 1, a power module 2, a signal expansion module 3, a first signal conversion module 4, a second signal conversion module 5, a first switching switch module 6, a second switching switch module 7, a first Type C wire 8 and a second Type C wire 9;

[0057] The first end of the first Type C wire 8 and the first end of the second Type C wire 9 are both electrically connected to the Type C double blind plug display A, the second end of the first Type C wire 8 is electrically connected to the first switching module 6, and the second end of the second Type C wire 9 is electrically connected to the second switching module 7;

[0058] The power module 2 is electrically connected to the main control module 1, the signal expansion module 3, the first signal conversion module 4, the second signal conversion module 5, the first switching switch module 6, the second switching switch module 7, the first Type C wire 8 and the second Type C wire 9 respectively;

[0059] The main control module 1 is electrically connected to the signal extension module 3, the first signal conversion module 4 and the second signal conversion module 5 respectively, and the signal extension module 3 is electrically connected to the first signal conversion module 4 and the second signal conversion module 5 respectively;

[0060] The first signal conversion module 4 is electrically connected to the first switching module 6; the second signal conversion module 5 is electrically connected to the second switching module 7;

[0061] The signal expansion module 3 is used to receive an HDMI signal source and expand the HDMI signal source into four HDMI signal outputs;

[0062] The first signal conversion module 4 is used to convert the two HDMI signals into TypeC signals, and the first switching switch module 6 is used to implement communication switching of the TypeC signals output by the first signal conversion module 4;

[0063] The second signal conversion module 5 is used to convert the two HDMI signals into Type C signals, and the second switching switch module 7 is used to implement communication switching of the Type C signals output by the second signal conversion module 5;

[0064] The main control module 1 is used to implement video transmission test, forward and reverse insertion test, voltage regulation test and power role switching test for TypeC double blind plug display A.

[0065] In the prior art, display devices such as mobile phones, notebooks and computers need to be tested before leaving the factory. In the past, Type C double blind plug display device testing used computers, notebooks and mobile phones with Type C interfaces as devices for testing double blind plug. This testing method not only requires plugging and unplugging each interface and flipping the wire, but also has cumbersome test steps and low efficiency. In addition, it is impossible to perform programmable testing on the power supply capacity of the device. The equipment is expensive and the cost of large-scale testing is high.

[0066] In view of the above shortcomings, in this application, the main control module 1, the power module 2, the signal expansion module 3, the first signal conversion module 4, the second signal conversion module 5, the first switching switch module 6, the second switching switch module 7, the first Type C cable 8 and the second Type C cable 9 are coordinated to realize the video transmission test, the forward and reverse insertion test, the voltage regulation test and the power role switching test of the Type C double blind plug display A, avoiding multiple plugging and unplugging, convenient operation and high testing efficiency.

[0067] Specifically, a semi-automatic test circuit of a TypeC double blind plug display function of the present application is used as a test device, and a TypeC double blind plug display A is used as a tested device, and a first TypeC wire 8 and a second TypeC wire 9 are connected to the test device and the tested device. The signal extension module 3 is connected to the TypeC double blind plug display A through an HDMI interface, receives the HDMI signal source of the TypeC double blind plug display A, and expands the HDMI signal source into four HDMI signal outputs; the first signal conversion module 4 and the second signal conversion module 5 respectively convert two of the HDMI signals into TypeC signal outputs; the first signal conversion module 4 and the second signal conversion module 5 are each provided with two CC communication pins, the first switching switch module 6 and the second switching switch module 7 are double-pole double-throw USB analog switching switches, the first switching switch module 6 is used to realize the switching communication connection between the two CC communication pins in the first signal conversion module 4 and the two CC lines on the first TypeC wire 8, and the second switching switch module 7 is used to realize the switching communication connection between the two CC communication pins on the second signal conversion module 5 and the two CC lines on the second TypeC wire 9.

[0068] Specifically, after the first TypeC wire 8 and the second TypeC wire 9 are connected to the test device and the device under test, the main control module 1 sets the first signal transmission path corresponding to the first TypeC wire 8 on the first signal conversion module 4 to DRP mode through the I2C interface communication configuration. In DRP mode, the first signal conversion module 4 communicates with the external TypeC device, and can be used as a Source to supply power to the outside, or as a Sink to receive power. At this time, the first signal transmission path corresponding to the first TypeC wire 8 on the first signal conversion module 4 is controlled to enable external communication, and the second signal transmission path output by the second TypeC wire 9 through the second signal conversion module 5 is enabled and closed. Then, the display output data is observed and recorded on the TypeC double blind plug display A, indicating that the video transmission of the TypeC double blind plug display A transmitted via the first signal transmission path is normal. Similarly, it can be measured that the video transmission of the TypeC double blind plug display A transmitted via the second signal transmission path is normal, which will not be repeated here.

[0069] Specifically, the main control module 1 sets the first signal transmission path corresponding to the first TypeC wire 8 on the first signal conversion module 4 to the DRP mode through the I2C interface communication configuration, controls the first signal transmission path corresponding to the first TypeC wire 8 on the first signal conversion module 4 to enable external communication, and enables the second signal transmission path output by the second TypeC wire 9 through the second signal conversion module 5 to be closed; at the same time, on the first signal transmission path, the main control module 1 controls the first switching switch module 6 to respectively switch the CC tube of the first signal conversion module 4 to communicate with the first TypeC wire 8, to implement the process of positive and negative plug-in test, eliminating the steps of plugging and unplugging the typec wire. If different CC pins can communicate and output the picture, the positive and negative plug-in function is normal. Similarly, the positive and negative plug-in function test of the TypeC double-blind plug display A transmitted via the second signal transmission path can be measured, which will not be repeated here.

[0070] Specifically, the first signal transmission path corresponding to the first TypeC wire 8 on the first signal conversion module 4 is set as a discharge source; the second signal transmission path corresponding to the second TypeC wire 9 on the second signal conversion module 5 is set as a receiving source; at this time, the first signal transmission path corresponding to the first TypeC wire 8 on the first signal conversion module 4 is controlled to enable external communication, and the main control module 1 sets the first signal conversion module 4 to be able to communicate and select the voltage size of the power supply of the tested port; when the external device adjusts the voltage output, the first signal conversion module 4 at the test end will request the maximum voltage level output of the external device, and there is an ADC pin in the first signal conversion module 4 that can detect the voltage value of the voltage adjustment output of the external device in real time, and obtain the highest voltage level of the output of the first signal transmission path according to the voltage change value, and complete the voltage adjustment test of the first signal transmission path. Similarly, the voltage adjustment test of the second signal transmission path can be obtained, which will not be repeated here.

[0071] Specifically, the first signal transmission path corresponding to the first TypeC wire on the first signal conversion module 4 is set as the discharge power source; after observing and recording the display output data on the TypeC double-blind plug display A, the first signal transmission path corresponding to the first TypeC wire on the first signal conversion module 4 is set as the receiving power source. By first outputting a power supply diagram for the tested port and then powering the second port, it is determined whether the double-blind plug linkage function of the tested device is normal. If the interface of the first TypeC wire actively switches the power role, it is normal, and the power role switching test is completed. Similarly, the power role switching test of the second signal transmission path can be obtained, which will not be repeated here.

[0072] In summary, the present application provides a semi-automatic test circuit for the function of a TypeC double-blind plug display. In this solution, the signal extension module 3 is used to receive an HDMI signal source and expand the HDMI signal source into four-way HDMI signal output; the first signal conversion module 4 is used to convert two-way HDMI signals into TypeC signals, and the first switching switch module 6 is used to realize the communication switching of the TypeC signal output by the first signal conversion module; the second signal conversion module 5 is used to convert two-way HDMI signals into TypeC signals, and the second switching switch module 7 is used to realize the communication switching of the TypeC signal output by the second signal conversion module; the main control module 1 is used to realize the video transmission test, forward and reverse plug test, voltage regulation test and power role switching test of the TypeC double-blind plug display A, so that the present application avoids multiple plugging and unplugging, is easy to operate, and has high testing efficiency.

[0073] Based on the above embodiments:

[0074] Please refer to Figure 2 , Figure 2 A structural schematic diagram of a semi-automatic test circuit for Type C double blind plug display function provided in this application.

[0075] As a preferred embodiment, a semi-automatic test circuit for Type C double blind plug display function further includes a key selection module 10, and the key selection module 10 includes a first key selection unit and a second key selection unit;

[0076] The main control module 1 is electrically connected to the first button selection unit and the second button selection unit respectively;

[0077] When the first button selection unit is pressed, the power supply of the main control module 1 and the power supply of the first Type C cable 8 are grounded together;

[0078] When the second button selection unit is pressed, the power supply of the main control module 1 and the power supply of the second Type C cable 9 are grounded.

[0079] Specifically, in this embodiment, after the first Type C cable 8 and the second Type C cable 9 are connected to the test device and the tested device, the power is turned on, and the corresponding button is pressed to select the double-blind Type C port to be tested, and then the power supply of the selected test port is shared with the power supply of the motherboard signal source.

[0080] As a preferred embodiment, the signal extension module 3 includes a signal distributor, a first signal extension unit, a second signal extension unit, a third signal extension unit and a fourth signal extension unit;

[0081] The signal distributor is electrically connected to the first signal extension unit, the second signal extension unit, the third signal extension unit and the fourth signal extension unit respectively, the first signal conversion module 4 is electrically connected to the first signal extension unit and the second signal extension unit respectively, and the second signal conversion module 5 is electrically connected to the third signal extension unit and the fourth signal extension unit respectively.

[0082] Please refer to Figure 3 , Figure 3 A circuit schematic diagram of a semi-automatic test circuit for Type C double blind plug display function provided in this application.

[0083] Specifically, the signal expansion module 3 uses an HDMI distributor to expand one HDMI signal source into four HDMI signal outputs. Among them, the first signal expansion unit, the second signal expansion unit, the third signal expansion unit and the fourth signal expansion unit are respectively used to output one HDMI signal. In this embodiment, the chip model of the HDMI distributor is LT86104UX. In another preferred embodiment, the chip model of the HDMI distributor is not specifically limited.

[0084] Specifically, the first signal conversion module 4 and the second signal conversion module 5 are used to realize the signal conversion from HDMI to TYPEC. In this embodiment, the chip models of the first signal conversion module 4 and the second signal conversion module 5 are both LT6711A. In another preferred embodiment, the chip models of the first signal conversion module 4 and the second signal conversion module 5 are not specifically limited.

[0085] Specifically, the main control module 1 is used to coordinate the power on and off during the test, the voltage regulation during the external discharge test, the register configuration of the signal mode processing, etc. In this embodiment, the chip model of the main control module 1 is STM32F105RBT6. In another preferred embodiment, the chip model of the main control module 1 is not specifically limited.

[0086] Specifically, the first switch module 6 is used as a selection for the two CC communication pins of the first signal conversion module 4 to communicate with the CC line of the external device, and the second switch module 7 is used as a selection for the two CC communication pins of the second signal conversion module 5 to communicate with the CC line of the external device. In this embodiment, the first switch module 6 and the second switch module 7 are double-pole double-throw USB analog switches, and the chip model is MSUSB30. In another preferred embodiment, the chip models of the first switch module 6 and the second switch module 7 are not specifically limited.

[0087] As a preferred embodiment, a semi-automatic test circuit for Type C double blind plug display function further includes an indication module, the indication module includes a first indication unit and a second indication unit;

[0088] The first indicating unit is electrically connected to the main control module 1 , and the second indicating unit is electrically connected to the signal conversion module.

[0089] Specifically, the first indicator unit is used to indicate the working state of the test equipment, and the second indicator unit is used to indicate the working state of the signal conversion module. For example, each time a test is completed, the indicator light corresponding to the first indicator unit flashes quickly or stays on; when the test fails, the indicator light corresponding to the first indicator unit goes out. The specific working form of the indicator module can be set as needed and is not specifically limited here.

[0090] As a preferred embodiment, a semi-automatic test circuit for Type C double blind plug display function further includes a third switching switch module;

[0091] The third switch module is electrically connected to the first signal conversion module 4, the second signal conversion module 5 and the USB interface of the host computer respectively.

[0092] Specifically, the third switching switch module is used to connect to the USB interface of the host computer, so as to control one of the first signal conversion module 4 or the second signal conversion module 5 to realize data transmission with the host computer.

[0093] The present application provides a semi-automatic test device for a Type C double blind plug display A function, including a semi-automatic test circuit for a Type C double blind plug display function.

[0094] For an introduction to a semi-automatic test circuit for a Type C double blind plug display function provided in this application, please refer to the above embodiment, and this application will not go into details here.

[0095] Please refer to Figure 4 , Figure 4 A flowchart of a semi-automatic testing method for Type C double blind plug display A function provided in this application.

[0096] The present application provides a semi-automatic test method for a Type C double blind plug display A function, which is applied to a semi-automatic test circuit for a Type C double blind plug display function. The method includes:

[0097] S1. Connect the test device and the device under test through a first TypeC cable and a second TypeC cable;

[0098] S2, power on and control the main control module to obtain the first key signal input by the user;

[0099] S3. Control the power supply of the first Type C cable and the power supply of the main control module to share a common ground according to the first key signal;

[0100] S4, controlling the signal expansion module to receive the HDMI signal source, and setting the first signal transmission path corresponding to the first Type C cable on the first signal conversion module to DRP;

[0101] S5, controlling the main control module to open the first signal transmission path output by the first TypeC cable through the first signal conversion module;

[0102] S6, controlling the main control module to close the second signal transmission path output by the second Type C cable through the second signal conversion module;

[0103] S7. Observe and record the display output data on the Type C double blind plug display A to complete the video transmission test of the Type C double blind plug display A.

[0104] Specifically, the above process shows that the video transmission of TypeC double blind plug display A transmitted via the first signal transmission path is normal. In another preferred embodiment, the main control module 1 can also be controlled to obtain the second key signal input by the user; according to the second key signal, the power supply of the second TypeC cable is controlled to be grounded with the power supply of the main control module 1; the signal expansion module 3 is controlled to receive the HDMI signal source, and the first signal transmission path corresponding to the second TypeC cable on the second signal conversion module 5 is set to DRP; the main control module 1 is controlled to close the first signal transmission path output by the first TypeC cable through the first signal conversion module 4; the main control module 1 is controlled to open the second signal transmission path output by the second TypeC cable through the second signal conversion module 5; the display output data is observed and recorded on the TypeC double blind plug display A, and the video transmission test of the TypeC double blind plug display A via the second signal transmission path is completed.

[0105] As a preferred embodiment, the method further includes

[0106] The control signal expansion module receives the HDMI signal source, and sets the first signal transmission path corresponding to the first TypeC cable on the first signal conversion module to DRP;

[0107] Control the main control module to open a first signal transmission path output by the first TypeC cable through the first signal conversion module;

[0108] Control the main control module to close the second signal transmission path output by the second Type C cable through the second signal conversion module;

[0109] Control the first switch module to sequentially select CC1 and CC2 for outputting the Type C signal output by the first signal transmission path;

[0110] Observe and record the display image data twice on the Type C double blind plug display A to complete the forward and reverse plug test of the Type C double blind plug display A.

[0111] Specifically, the above process shows that the forward and reverse plug test of the TypeC double blind plug display A via the first signal transmission path is normal. In another preferred embodiment, the main control module 1 sets the second signal transmission path corresponding to the second TypeC wire 9 on the second signal conversion module 5 to DRP mode through the I2C interface communication configuration, controls the second signal transmission path corresponding to the second TypeC wire 9 on the second signal conversion module 5 to enable external communication, and enables the first TypeC wire 8 to be closed through the first signal transmission path output by the first signal conversion module 4; at the same time, on the second signal transmission path, the main control module 1 controls the second switching switch module 7 to switch the CC tube that the second signal conversion module 5 needs to communicate with the second TypeC wire 9, and realizes the process of forward and reverse plug test, eliminating the steps of plugging and unplugging the typec wire. If different CC pins can communicate and output pictures, the forward and reverse plug function is normal.

[0112] As a preferred embodiment, the method further includes:

[0113] The control signal expansion module receives the HDMI signal source, and sets the first signal transmission path corresponding to the first TypeC cable on the first signal conversion module as a discharge source;

[0114] Setting the second signal transmission path corresponding to the second Type C cable on the second signal conversion module to receive power;

[0115] Control the first signal conversion module to request the external device to output the maximum voltage level;

[0116] Acquiring a voltage change value on a first signal transmission path;

[0117] The highest voltage level output by the first signal transmission path is obtained according to the voltage change value, and the voltage regulation test is completed.

[0118] Specifically, the voltage regulation test of the second signal transmission path can be obtained similarly, which will not be described in detail here.

[0119] As a preferred embodiment, the method further includes:

[0120] Setting the first signal transmission path corresponding to the first Type C cable on the first signal conversion module as a discharge source;

[0121] After observing and recording the display image data on the TypeC double blind plug display A, the first signal transmission path corresponding to the first TypeC cable on the first signal conversion module is set to the power supply, and the power role switching test is completed.

[0122] Specifically, the power role switching test of the second signal transmission path can be obtained similarly, which will not be described in detail here.

[0123] Specifically, in the present application, if each test step is normal, you only need to press the PASS key to record the result of the step; when all the steps are tested, it is determined whether the tested device has passed the test based on each test.

[0124] It should be noted that, in this specification, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0125] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A semi-automatic test circuit for TypeC double blind plug display function, characterized in that: It includes a main control module, a power module, a signal expansion module, a first signal conversion module, a second signal conversion module, a first switching switch module, a second switching switch module, a first Type C cable and a second Type C cable; The first end of the first Type C wire and the first end of the second Type C wire are both electrically connected to the Type C double blind plug display, the second end of the first Type C wire is electrically connected to the first switching module, and the second end of the second Type C wire is electrically connected to the second switching module; The power module is electrically connected to the main control module, the signal expansion module, the first signal conversion module, the second signal conversion module, the first switching switch module, the second switching switch module, the first Type C wire and the second Type C wire respectively; The main control module is electrically connected to the signal expansion module, the first signal conversion module and the second signal conversion module respectively, and the signal expansion module is electrically connected to the first signal conversion module and the second signal conversion module respectively; The first signal conversion module is electrically connected to the first switching module; the second signal conversion module is electrically connected to the second switching module; The signal expansion module is used to receive an HDMI signal source and expand the HDMI signal source into four HDMI signal outputs; The first signal conversion module is used to convert the two HDMI signals into Type-C signals, and the first switching switch module is used to realize the switching communication connection between the two CC communication pins in the first signal conversion module and the two CC lines on the first Type-C cable; The second signal conversion module is used to convert the two HDMI signals into Type-C signals, and the second switching switch module is used to realize the switching communication connection between the two CC communication pins on the second signal conversion module and the two CC lines on the second Type-C cable; The main control module is used to implement video transmission test, forward and reverse insertion test, voltage regulation test and power role switching test on the TypeC double blind plug display.

2. According to claim 1, a semi-automatic test circuit for Type C double blind plug display function is characterized in that: The semi-automatic test circuit of the Type C double blind plug display function also includes a key selection module, and the key selection module includes a first key selection unit and a second key selection unit; The main control module is electrically connected to the first button selection unit and the second button selection unit respectively; When the first button selection unit is pressed, the power supply of the main control module and the power supply of the first Type-C cable are grounded together; When the second button selection unit is pressed, the power supply of the main control module and the power supply of the second Type C cable are grounded.

3. A semi-automatic test circuit for Type C double blind plug display function according to claim 1, characterized in that: The signal extension module includes a signal distributor, a first signal extension unit, a second signal extension unit, a third signal extension unit and a fourth signal extension unit; The signal distributor is electrically connected to the first signal extension unit, the second signal extension unit, the third signal extension unit and the fourth signal extension unit, respectively; the first signal conversion module is electrically connected to the first signal extension unit and the second signal extension unit, respectively; and the second signal conversion module is electrically connected to the third signal extension unit and the fourth signal extension unit, respectively.

4. A semi-automatic test circuit for Type C double blind plug display function according to claim 1, characterized in that: The semi-automatic test circuit of the TypeC double blind plug display function also includes an indication module, and the indication module includes a first indication unit and a second indication unit; The first indicating unit is electrically connected to the main control module, and the second indicating unit is electrically connected to the signal conversion module.

5. A semi-automatic test circuit for Type C double blind plug display function according to claim 1, characterized in that: The semi-automatic test circuit of the TypeC double blind plug display function also includes a third switching switch module; The third switching switch module is electrically connected to the first signal conversion module, the second signal conversion module and the USB interface of the host computer respectively.

6. A semi-automatic test device for TypeC double blind plug display function, characterized in that: A semi-automatic test circuit for Type C double blind plug display function comprising any one of claims 1 to 5.

7. A semi-automatic test method for TypeC double blind plug display function, characterized in that: A semi-automatic test circuit for Type C double blind plug display function applied to any one of claims 1 to 5, the method comprising: Connecting a testing device and a device under test through the first Type-C cable and the second Type-C cable; Power on and control the main control module to obtain a first key signal input by a user; According to the first key signal, control the power supply of the first Type C cable to share a common ground with the power supply of the main control module; Control the signal extension module to receive an HDMI signal source, and set the first signal transmission path corresponding to the first Type C cable on the first signal conversion module to DRP; Control the main control module to open a first signal transmission path output by the first Type C cable through the first signal conversion module; Control the main control module to close the second signal transmission path output by the second Type C cable through the second signal conversion module; Observe and record the display image data on the Type C double blind plug display to complete the video transmission test of the Type C double blind plug display.

8. A semi-automatic test method for Type C double blind plug display function according to claim 7, characterized in that: The method further comprises Control the signal extension module to receive an HDMI signal source, and set the first signal transmission path corresponding to the first Type C cable on the first signal conversion module to DRP; Control the main control module to open a first signal transmission path output by the first Type C cable through the first signal conversion module; Control the main control module to close the second signal transmission path output by the second Type C cable through the second signal conversion module; Control the first switch module to sequentially select CC1 and CC2 for outputting the Type C signal output by the first signal transmission path; Observe and record the display image data twice on the Type C double blind plug display to complete the forward and reverse plug test of the Type C double blind plug display.

9. A semi-automatic test method for Type C double blind plug display function according to claim 8, characterized in that: The method further comprises: Control the signal extension module to receive the HDMI signal source, and set the first signal transmission path corresponding to the first Type C cable on the first signal conversion module as a discharge source; Setting the second signal transmission path on the second signal conversion module corresponding to the second Type C wire as a receiving power source; Control the first signal conversion module to request the external device to output the maximum voltage level; Acquiring a voltage change value on the first signal transmission path; The highest voltage level output by the first signal transmission path is obtained according to the voltage change value, and the voltage regulation test is completed.

10. A semi-automatic test method for Type C double blind plug display function according to claim 7, characterized in that: The method further comprises: Setting the first signal transmission path on the first signal conversion module corresponding to the first Type C wire as a discharge source; After observing and recording the display image data on the Type C double blind plug display, the first signal transmission path corresponding to the first Type C wire on the first signal conversion module is set as a receiving power source to complete the power role switching test.

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