HDMI (High Definition Multimedia Interface) equipment test system

Abstract

The utility model discloses an HDMI device test system, and relates to the technical field of product testing, and the system transmits a first test signal to a device to be tested through an upper computer when the system carries out an HDMI function test on the device to be tested, the device to be tested receives the first test signal through a second HDMI port, and outputs a corresponding preset image signal to a playing device through a first HDMI port. And playing the preset image. And the color analysis device extracts the played preset image to perform color analysis, obtains a color analysis result corresponding to the color in the preset image, and feeds back the color analysis result to the upper computer, so that the upper computer obtains an HDMI image transmission test result between the second HDMI port and the first HDMI port according to the color analysis result, and the HDMI image transmission test result is sent to the first HDMI port according to the HDMI image transmission test result. Automatic testing of the HDMI function of the to-be-tested device is realized, the accuracy of HDMI function testing of the electronic product is improved, bad products are prevented from flowing down, the cost is saved, and the customer complaint rate is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of product testing, and particularly relates to an HDMI equipment testing system. BACKGROUND

[0002] In the prior art, many electronic products have a high-definition multimedia interface (HDMI), which includes an HDMI input end and an HDMI output end. An image, audio or video signal can be transmitted to the HDMI input end through a personal computer (PC) or a Blu-ray disc player (BD), and then the electronic product can encrypt or decrypt the signal and output the signal to a subsequent connected playing device through the HDMI output end, so that the playing device can play the corresponding image, audio or video based on the received signal.

[0003] When producing such electronic products, the function of the HDMI port needs to be tested. Usually, the test method is to manually determine the image, audio or video played by the playing device connected to the electronic product through the sense of the tester, and the test effect is poor. UTILITY MODEL CONTENT

[0004] The main purpose of the present application is to provide an HDMI equipment testing system, which aims to solve the technical problem of how to improve the accuracy of HDMI function testing of electronic products.

[0005] To achieve the above purpose, the present application provides an HDMI equipment testing system, which comprises an upper computer, a playing device, a color analysis device and a device to be tested.

[0006] The playing device is used to connect the first HDMI port of the device to be tested. The upper computer is connected to the color analysis device, and the upper computer is also used to connect the second HDMI port of the device to be tested.

[0007] The upper computer is used to output a first test signal corresponding to a first test instruction triggered by a user to the device to be tested.

[0008] The device to be tested is used to convert the first test signal received through the second HDMI port into a preset image signal, and transmit the preset image signal to the playing device through the first HDMI port.

[0009] The playing device is used to display a preset image corresponding to the preset image signal when the preset image signal is received.

[0010] The color analysis device is configured to extract the preset image for color analysis and transmit a corresponding color analysis result signal to the host computer.

[0011] The host computer is further configured to obtain an HDMI image transmission test result of the to-be-tested device when the color analysis result signal is received.

[0012] The application provides an HDMI device test system, which comprises a host computer, a playing device, a color analysis device and a to-be-tested device. The playing device is configured to be connected to a first HDMI port of the to-be-tested device. The host computer is connected to the color analysis device, and is further configured to be connected to a second HDMI port of the to-be-tested device. The host computer is configured to output a first test signal corresponding to a first test instruction triggered by a user to the to-be-tested device. The to-be-tested device is configured to convert the first test signal received through the second HDMI port into a preset image signal and transmit the preset image signal to the playing device through the first HDMI port. The playing device is configured to display a corresponding preset image when the preset image signal is received. The color analysis device is configured to extract the preset image for color analysis and transmit a corresponding color analysis result signal to the host computer. The host computer is further configured to obtain an HDMI image transmission test result of the to-be-tested device when the color analysis result signal is received.

[0013] When the to-be-tested device with an HDMI port is tested for HDMI function, the host computer transmits a first test signal to the to-be-tested device. The to-be-tested device receives the first test signal through a second HDMI port and outputs a corresponding preset image signal to the playing device through a first HDMI port, so that the playing device plays the preset image. The color analysis device extracts the played preset image for color analysis, obtains a color analysis result corresponding to the color of the preset image, and feeds back the color analysis result to the host computer. The host computer obtains an HDMI image transmission test result between the second HDMI port and the first HDMI port according to the color analysis result, so as to realize automatic testing of the HDMI function of the to-be-tested device, improve the accuracy of the HDMI function test of the electronic product, prevent the flow of substandard products, save costs and reduce the rate of customer complaints. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor.

[0016] Figure 1 The structural connection diagram provided for the first embodiment of the HDMI device test system of the present application is shown in FIG. 1.

[0017] Figure 2 The structural connection diagram provided for the second embodiment of the HDMI device test system of the present application is shown in FIG. 2.

[0018] The object, functional features and advantages of the present application will be further explained in conjunction with the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0019] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0020] In order to better understand the technical solutions of the present application, the specific embodiments will be described in detail in conjunction with the accompanying drawings and the specific embodiments.

[0021] The HDMI device test system of the first embodiment of the present application is shown in FIG. 1. Figure 1 The HDMI device test system comprises a host computer 10, a playing device 30, a color analysis device 40 and a device under test 20.

[0022] The playing device 30 is used to connect the first HDMI port of the device under test 20; the host computer 10 is connected to the color analysis device 40, and the host computer 10 is also used to connect the second HDMI port of the device under test 20.

[0023] The host computer 10 is used to output a first test signal corresponding to a first test instruction triggered by a user to the device under test 20 when the first test instruction is received.

[0024] The device under test 20 is used to convert the first test signal received through the second HDMI port into a preset image signal, and transmit the preset image signal to the playing device 30 through the first HDMI port.

[0025] The playing device 30 is used to display a preset image corresponding to the preset image signal when the preset image signal is received.

[0026] The color analysis device 40 is used to extract the preset image for color analysis, and transmit a color analysis result signal corresponding to the color analysis to the host computer 10.

[0027] The host computer 10 is also used to obtain an HDMI image transmission test result of the device under test 20 when the color analysis result signal is received.

[0028] It should be understood that the device under test 20 can be a device with multiple HDMI ports, such as a set-top box, and the HDMI ports include at least a first HDMI port and a second HDMI port, wherein the first HDMI port or the second HDMI port can be multiple, and the number is not limited. The device under test 20 can encrypt or decrypt the HDMI type signal, so as to convert it into another signal and send it out, and the signal transceiving function is mainly realized through the first HDMI port and the second HDMI port. The first HDMI port and the second HDMI port can both realize bidirectional transmission of signals, but there are some differences in function in the embodiment, for example, the second HDMI port is a signal receiving end, mainly used for receiving the first test signal transmitted by the host computer 10; the first HDMI port is a signal sending end, mainly used for sending the preset image signal corresponding to the first test signal to the playing device 30. The host computer 10 can be a PC or a BD player, which can generate and send image signals or video signals, i.e. first test signals, according to the first test instruction triggered by the user; the playing device 30 can be a television, which can play images or videos.

[0029] It should be noted that in the embodiment, the first test signal is an HDMI type image signal or video signal carrying preset image information, and the preset image signal refers to a signal generated by encrypting or decrypting the preset image information. The device under test 20 can encrypt or decrypt the preset image information in its internal when receiving the first test signal to generate the preset image signal, and send the preset image signal to the playing device 30; the playing device 30 can obtain the preset image information contained in the preset image signal when receiving the preset image signal, so as to generate and play the corresponding preset image according to the preset image information; the color analysis device 40 can be arranged in front of the playing device 30, used to extract the preset image currently played by the playing device 30, and analyze the color of a specific region in the preset image, and generate the corresponding color analysis result, which can be LBB-RT-TRURS-T16.

[0030] It is worth noting that the preset image can be an image set by the host computer 10, which has specific colors in specific regions, for example, an image with red, yellow, green and blue color regions respectively arranged in the four corner regions of a rectangular preset image. The color analysis device 40 can determine the color parameters displayed in the four corner regions, for example, the color brightness value of the red region is a, which can be determined according to the upper limit value H_r_limit of the color brightness value of the red region and the lower limit value L_r_limit of the color brightness value of the red region set by the host computer 10. If there is:

[0031] L_r_limit≤a≤H_r_limit;

[0032] Then it can be determined that the color of the current red region meets the specifications of the good product. Similarly, the remaining three color regions can also be determined by the similar method described above, and the collection of the determination results of the four regions is the color analysis result described above.

[0033] As can be easily understood, in the embodiment, when the HDMI function test of the to-be-tested device 20 is needed, the second HDMI port for receiving signals which needs to be tested is connected with the host computer 10, and the first HDMI port for sending signals which needs to be tested is connected with the playing device 30. The host computer 10 sends the first test signal of the HDMI type to the to-be-tested device 20, the to-be-tested device 20 receives the first test signal through the second HDMI port, and encrypts or decrypts the preset image information contained in the first test signal, thereby generating the corresponding preset image signal, and outputting the preset image signal to the playing device 30 through the first HDMI port. When the playing device 30 receives the preset image signal, it can obtain the preset image information contained in the preset image signal, and play the corresponding preset image according to the preset image information. The color analysis device 40 can collect the color in the preset image and analyze the color, thereby generating the color analysis result, and feeding back the color analysis result to the host computer 10. The host computer 10 can determine whether the preset image currently played by the playing device 30 matches the preset image information sent to the to-be-tested device 20 according to the color analysis result, so as to determine the HDMI image transmission test result between the second HDMI port and the first HDMI port of the to-be-tested device 20, and thereby complete the automatic test of the HDMI function of the to-be-tested device 20.

[0034] It is worth noting that in the embodiment, the HDMI image transmission test result can be understood as a determination result for determining whether the to-be-tested device 20 is a good product, which corresponds to the color analysis result. If the color analysis result is that the color displayed in each color region meets the specifications of the good product, it is determined that the to-be-tested product is a good product; if the color analysis result is that the color displayed in one or more color regions does not meet the specifications of the good product, it is determined that the to-be-tested product is a defective product.

[0035] Based on the above test system, the preset image played by the playing device 30 does not need to be artificially determined by the senses (naked eyes) of the staff, but is tested by the color analysis device 40 with higher judgment accuracy, which greatly improves the test accuracy of the entire test system, reduces the risk of defective products, reduces the probability of complaints, and also reduces the working hours of retesting the defective products, greatly reducing the production cost of the to-be-tested products with HDMI ports.

[0036] The application provides an HDMI device test system. When the HDMI function of a device to be tested having an HDMI port is tested, the first test signal is transmitted to the device to be tested by the host computer, the device to be tested receives the first test signal through the second HDMI port, and the preset image signal corresponding to the first test signal is output to the playing device through the first HDMI port, so that the preset image is played. The color analysis device extracts the played preset image to perform color analysis, obtains the color analysis result corresponding to the color in the preset image, and feeds back the color analysis result to the host computer, so that the host computer obtains the HDMI image transmission test result between the second HDMI port and the first HDMI port according to the color analysis result, the HDMI function of the device to be tested is automatically tested, the accuracy of the HDMI function test of the electronic product is improved, the bad products are prevented from flowing into the market, the cost is saved, and the complaint rate is reduced.

[0037] Based on the first embodiment of the application, the same or similar contents as the above embodiment one can be referred to the above description, and the subsequent description will not be repeated. On this basis, please refer to Figure 2 , the device to be tested 20 comprises a plurality of second HDMI ports, and the HDMI device test system further comprises a distributor 50;

[0038] The distributor 50 is connected to the host computer 10, and the distributor 50 is further used for connecting each second HDMI port respectively;

[0039] The host computer 10 is used for outputting the first test signal to the distributor 50 when receiving the test instruction;

[0040] The distributor 50 is used for transmitting the first test signal to the device to be tested 20 through each second HDMI port respectively;

[0041] The device to be tested 20 is used for selecting one of the second HDMI ports to be enabled, adjusting the first test signal received by the currently enabled second HDMI port to the preset image signal, and transmitting the preset image signal to the playing device 30 through the first HDMI port.

[0042] It should be noted that the device under test 20 can have a plurality of second HDMI ports for receiving signals, and each second HDMI port can be connected to the host computer 10 through the distributor 50. The distributor 50 can also be understood as a device that synchronously outputs the same signal through multiple ports. In the embodiment, the distributor 50 can divide the first test signal sent by the host computer 10 into multiple identical first test signals and send them to each second HDMI port of the device under test 20 respectively. The device under test 20 can also select to enable any one of the second HDMI ports to receive the corresponding first test signal provided by the distributor 50, encrypt or decrypt the preset image information contained in the first test signal to generate a corresponding preset image signal, and send the preset image signal to the playback device 30 through the first HDMI port, so that the playback device 30 plays the preset image.

[0043] It is easy to understand that in the embodiment, the preset image played by the playback device 30 corresponds to the color analysis result or the HDMI image transmission test result, which should correspond to the transmission function between the enabled second HDMI port and the first HDMI port in the device under test 20. Therefore, in the case that the device under test 20 has multiple HDMI ports (multiple HDMI transmission channels), the system can also sequentially test the multiple HDMI transmission functions of the device under test 20, reduce the time spent on manual plugging and unplugging, and improve the test efficiency.

[0044] Further, in the embodiment, the host computer 10 is also used to connect the communication port of the device under test 20.

[0045] The host computer 10 is also used to output a corresponding port switching signal to the device under test 20 when receiving a user-triggered port switching instruction.

[0046] The device under test 20 is also used to switch the currently enabled second HDMI port to another second HDMI port that has not been enabled when receiving the port switching signal through the communication port.

[0047] It should be noted that in the embodiment, the device under test 20 also has a communication port and can be connected to the host computer 10 through the communication port to directly interact with the host computer 10. The port switching instruction can be transmitted by the host computer 10 to the device under test 20 through the communication port to control the device under test 20 to switch the currently enabled second HDMI port.

[0048] It is easy to understand that in the embodiment, after the function test of each HDMI transmission channel is completed, the host computer 10 can also send a port switching signal to the device under test 20 through the communication port. When the device under test 20 receives the port switching signal, the second HDMI port currently enabled (which has completed the HDMI function test) can be switched to another second HDMI port that is not enabled (which has not been tested for HDMI function). Until each HDMI transmission channel completes the HDMI function test.

[0049] Further, in the embodiment, the host computer 10 is also connected to the playback device 30 through the distributor 50.

[0050] The host computer 10 is also configured to transmit a second test signal to the playback device 30 through the distributor 50 when receiving a second test instruction triggered by the user.

[0051] The playback device 30 is also configured to convert the second test signal into a preset audio signal and transmit the preset audio signal to the device under test 20 through the first HDMI port.

[0052] The device under test 20 is also configured to send a corresponding audio reception judgment signal to the host computer 10 through the communication port when receiving the preset audio signal.

[0053] The host computer 10 is also configured to obtain the HDMI audio reception test result of the device under test 20 when receiving the audio reception judgment signal.

[0054] It should be noted that the host computer 10 can also generate a corresponding audio signal, i.e., a second test signal, according to a second test instruction triggered by the user. The host computer 10 and the playback device 30 can be connected through the distributor 50 to realize information interaction. In the embodiment, the playback device 30 also converts the second test signal transmitted by the host computer 10 into a preset audio signal of the HDMI type and sends the preset audio signal to the device under test 20. The device under test 20 can also generate a judgment-type electrical signal, i.e., an audio reception judgment signal, according to the received preset audio signal, to indicate whether the device under test 20 receives the preset audio signal.

[0055] In a specific implementation, when the host computer 10 sends the second test signal to the playback device 30 through the distributor 50, the playback device 30 can convert the second test signal into a preset audio signal and transmit it to the device under test 20. The device under test 20 can receive the preset audio signal through the first HDMI port, generate an audio reception judgment signal according to the received preset audio signal, and feed back to the host computer 10 through the communication port. The host computer 10 can determine whether the first HDMI port of the device under test 20 can normally receive the preset audio signal based on the received audio reception judgment signal, that is, obtain the corresponding HDMI audio reception test result.

[0056] Therefore, the system provided in the present application can not only test the image transmission or video transmission function of the device under test 20, but also automatically detect the function of receiving the HDMI type audio signal of the device under test 20, that is, realize the all-in-one test, and reduce the number of test workstations on the production line.

[0057] Further, in the present embodiment, the device under test 20 further comprises a third HDMI port, and the HDMI device test system further comprises an audio separator 60.

[0058] The audio separator 60 is connected to the host computer 10, and the audio separator 60 is further used to connect the third HDMI port of the device under test 20.

[0059] The device under test 20 is further used to convert the preset audio signal into an HDMI audio signal and transmit the HDMI audio signal to the audio separator 60 through the third HDMI port.

[0060] The audio separator 60 is further used to separate the received HDMI audio signal into a preset audio signal and transmit the preset audio signal to the host computer 10.

[0061] The host computer 10 is further used to obtain an HDMI audio transmission test result of the device under test 20 when receiving the preset audio signal.

[0062] It should be noted that the device under test 20 can also have a third HDMI port, which has an enhanced audio return channel (eARC) function and can transmit uncompressed multi-channel high-end audio format; the device under test 20 can also convert the preset audio signal received by the first HDMI port into an HDMI type audio signal, that is, an HDMI audio signal. The audio separator 60 refers to a device that can separate the audio signal in the HDMI type signal from the image signal (video signal).

[0063] In a specific implementation, when the preset audio signal is received by the first HDMI port, the to-be-tested device 20 can also convert the preset audio signal into an HDMI audio signal and transmit the HDMI audio signal to the audio separator 60 through the third HDMI port. The audio separator 60 separates the received HDMI audio signal, thereby reacquiring the preset audio signal, and transmits the separated preset audio signal to the host computer 10. The host computer 10 can determine whether the third HDMI port of the to-be-tested device 20 can normally transmit the HDMI audio signal according to the received preset audio signal, that is, obtain the corresponding HDMI audio transmission test result.

[0064] As a specific determination manner, the host computer 10 can convert the audio file corresponding to the preset audio signal into a.wav format through an internal sound card, analyze the.wav format audio file, obtain the signal-to-noise ratio under the 1KHZ frequency, and when the signal-to-noise ratio is within a pre-set signal-to-noise ratio threshold range, determine that the third HDMI port of the to-be-tested device 20 can normally transmit the HDMI audio signal; when the signal-to-noise ratio is not within the pre-set signal-to-noise ratio threshold range, determine that the third HDMI port of the to-be-tested device 20 cannot normally transmit the HDMI audio signal.

[0065] Therefore, the system provided in the present application can not only automatically detect the function of the to-be-tested device 20 to receive the HDMI type audio signal, but also automatically detect the function of the to-be-tested device 20 to transmit the HDMI type audio signal, that is, realize the all-in-one test and reduce the number of test workstations of the production line.

[0066] Further, in the embodiment, the HDMI device test system further comprises a converter 70;

[0067] The converter 70 is connected to the host computer 10 through an audio line, and the converter 70 is also connected to the audio separator 60 through an optical fiber;

[0068] The audio separator 60 is also used to separate the received HDMI audio signal into the preset audio signal, convert the preset audio signal into an optical signal, and transmit the optical signal to the converter 70;

[0069] The converter 70 is used to convert the optical signal into the preset audio signal of an electrical signal, and transmit the preset audio signal to the host computer 10;

[0070] The host computer 10 is also used to obtain the HDMI audio transmission test result when the preset audio signal is received.

[0071] It should be noted that in the embodiment, the output of the audio separator 60 can be in the form of an optical signal, connected to the converter 70 through an optical fiber to reduce the transmission loss of the audio signal in this section of the transmission process and improve the noise immunity of the system. The converter 70 refers to an optoelectronic converter arranged between the host computer 10 and the audio separator 60. The converter 70 and the host computer 10 can be connected through an audio line. The audio line effectively reduces signal interference and loss through a carefully designed conductor, insulation layer and shielding layer, thereby ensuring pure and lossless sound quality and improving the noise immunity of the system.

[0072] In a specific implementation, the audio separator 60 can receive the HDMI audio signal sent by the device under test 20 through an optical fiber, and output the preset audio signal separated therefrom to the converter 70 in the form of an optical signal. The converter 70 converts the preset audio signal of the optical signal into an electrical signal and then transmits it to the host computer 10 through an audio line. Through the above-mentioned manner, the power loss of the preset audio signal transmitted to the host computer 10 can be smaller, and the noise immunity of the system can be better, so as to improve the accuracy of the system in obtaining the HDMI audio transmission test result.

[0073] It should be noted that in the embodiment, the diameter of the audio line can be 3.5 mm. The 3.5 mm audio line can be connected to various devices, including mobile phones, PCs, DVDs, televisions, radios, CD players, power amplifiers, sound systems, and car audio systems, etc., and can realize the transmission of audio signals of multiple types of devices.

[0074] Further, in the embodiment, the host computer 10 is further configured to determine whether the device under test 20 is a qualified product based on the obtained HDMI audio transmission test result, HDMI audio reception test result and HDMI image transmission test result.

[0075] It should be noted that in the embodiment, the host computer 10 can determine whether the HDMI audio transmission function of the current product under test meets the specification standard of a good product according to the obtained HDMI audio transmission test result and HDMI audio reception test result. Meanwhile, the host computer 10 can also determine whether the HDMI image (video) transmission function of the current product under test meets the specification standard of a good product according to the obtained HDMI image transmission test result. When the host computer 10 determines that both the HDMI image transmission function and the HDMI image (video) transmission function of the current product under test meet the specification standard of a good product, it can be determined that the current device under test 20 belongs to a good product, i.e., a qualified product.

[0076] Further, in the embodiment, the third HDMI port is one of the second HDMI ports, and the third HDMI port is further connected to the distributor 50 through the audio separator 60, for obtaining the first test signal transmitted by the distributor 50 through the audio separator 60.

[0077] It should be noted that in the present embodiment, the third HDMI port can be one of the second HDMI ports, and the audio splitter 60 can also be connected with the distributor 50, for transmitting the first test signal provided by the distributor 50 and containing preset image information to the third HDMI port, and it can also be understood that the device under test 20 can also receive the first test signal transmitted by the audio splitter through the third HDMI port. Through the structure, it can be realized that the third HDMI port can receive video signals and also can send audio signals, and support testing of two functions.

[0078] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A HDMI device testing system, characterized by, The HDMI device test system comprises a host computer, a playing device, a color analysis device and a device under test; The playing device is configured to be connected to a first HDMI port of the device under test; the host computer is connected to the color analysis device, and the host computer is further configured to be connected to a second HDMI port of the device under test; The host computer is configured to output a first test signal corresponding to a first test instruction triggered by a user to the device under test; The device under test is configured to convert the first test signal received through the second HDMI port into a preset image signal, and transmit the preset image signal to the playing device through the first HDMI port; The playing device is configured to display a preset image corresponding to the preset image signal when the preset image signal is received; The color analysis device is configured to extract the preset image for color analysis, and transmit a color analysis result signal corresponding to the color analysis to the host computer; The host computer is further configured to obtain an HDMI image transmission test result of the device under test when the color analysis result signal is received.

2. The HDMI device testing system of claim 1, wherein, The device under test comprises a plurality of second HDMI ports, and the HDMI device test system further comprises a distributor; The distributor is connected to the host computer, and the distributor is further configured to be connected to each of the second HDMI ports; The host computer is configured to output the first test signal to the distributor when the test instruction is received; The distributor is configured to transmit the first test signal to the device under test through each of the second HDMI ports; The device under test is configured to select one of the second HDMI ports to be enabled, adjust the first test signal received by the currently enabled second HDMI port into the preset image signal, and transmit the preset image signal to the playing device through the first HDMI port.

3. The HDMI device testing system of claim 2, wherein, The host computer is further configured to be connected to a communication port of the device under test; The host computer is further configured to output a port switching signal corresponding to a port switching instruction triggered by a user to the device under test; The device under test is further configured to switch the currently enabled second HDMI port to another second HDMI port that has not been enabled when the port switching signal is received through the communication port.

4. The HDMI device testing system of claim 3, wherein, The host computer is further connected to the playing device through the distributor; The host computer is further configured to transmit a second test signal to the playing device through the distributor when a second test instruction triggered by a user is received; The playing device is further configured to convert the second test signal into a preset audio signal, and transmit the preset audio signal to the device under test through the first HDMI port; The device under test is further configured to transmit an audio reception judgment signal corresponding to the preset audio signal to the host computer through the communication port when the preset audio signal is received; The host computer is further configured to obtain an HDMI audio reception test result of the device under test when the audio reception judgment signal is received.

5. The HDMI device testing system of claim 4, wherein, The device under test further comprises a third HDMI port, and the HDMI device test system further comprises an audio separator; The audio separator is connected to the host computer, and the audio separator is further configured to be connected to the third HDMI port of the device under test; The device under test is further configured to convert the preset audio signal into an HDMI audio signal and transmit the HDMI audio signal to the audio separator through the third HDMI port; The audio separator is further configured to separate the preset audio signal from the received HDMI audio signal and transmit the preset audio signal to the host computer; The host computer is further configured to obtain an HDMI audio sending test result of the device under test when the preset audio signal is received.

6. The HDMI device testing system of claim 5, wherein, The HDMI device test system further comprises a converter; The converter is connected to the host computer through an audio cable, and the converter is further connected to the audio separator through an optical fiber; The audio separator is further configured to separate the preset audio signal from the received HDMI audio signal and transmit the preset audio signal to the converter after converting the preset audio signal into an optical signal; The converter is configured to convert the optical signal into an electrical signal preset audio signal and transmit the preset audio signal to the host computer; The host computer is further configured to obtain an HDMI audio sending test result when the preset audio signal is received.

7. The HDMI device testing system of claim 6, wherein, The host computer is further configured to determine whether the device under test is a qualified product based on the obtained HDMI audio sending test result, HDMI audio receiving test result and HDMI image transmission test result.

8. The HDMI device testing system of claim 6, wherein, The diameter of the audio cable is 3.5 mm.

9. The HDMI device testing system of claim 5, wherein, The third HDMI port is one of the second HDMI ports, and the third HDMI port is further connected to the distributor through the audio separator and configured to obtain the first test signal transmitted by the distributor through the audio separator.

10. The HDMI device testing system of any of claims 1-9, wherein, The host computer comprises any one of a PC or a BD player.

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