Video interface signal decoy tester

Abstract

The utility model discloses a video interface signal decoy tester, which comprises a main board, the main board is respectively provided with a core controller, a video signal input interface, a power supply interface and a judgment result output module, the video signal input interface is used for connecting a video output port of a tested product, and the power supply interface is used for connecting a video output port of the tested product. The parameter reading module is used for reading parameters of a video output port of a tested product and is connected with the core controller to realize parameter transmission, the core controller is connected with the LCD display screen to display a judgment result of the core controller, and the judgment result output module is connected with the core controller to realize receiving of the judgment result. The tester provides a plurality of structures capable of detecting whether the video signal transmission function of the video output port is normal or not so as to meet the detection requirements of different products in the production process, different detection means are adopted according to the production process of the products, and the detection efficiency is improved. The production test efficiency is improved, and the accuracy of a test result is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electronic technology, specifically to a video interface signal deception tester. Background Technology

[0002] Nowadays, some display device manufacturers perform functional tests on video signal interfaces when testing display devices on the production line. For example, display devices with HDMI interfaces are tested using HDMI signal sources.

[0003] However, existing video signal testing devices mostly provide feedback on test results through indicator lights and sounds, without providing basic information about the video signal transmission function of the tested product (such as EDID data). This limits the testing personnel's understanding of the specific details of the test results. When re-adjusting a problematic product, multiple troubleshooting steps are required to identify the problem in the video signal transmission function, which can impact the production efficiency of display devices. Furthermore, the feedback methods of existing video signal testing devices for signal source detection results are relatively simple and not integrated with the product's stage in the production process. Utility Model Content

[0004] To address the technical deficiencies in the background technology, this utility model proposes a video interface signal deception tester, which solves the aforementioned technical problems and meets practical needs. The specific technical solution is as follows:

[0005] This utility model discloses a video interface signal deception tester. The tester includes a motherboard, which is equipped with a core controller, a video signal input interface, a power supply interface, and a judgment result output module. The video signal input interface is used to connect to the video output port of the product under test, read parameters from the video output port of the product under test, and connect to the core controller to transmit parameters. The core controller is connected to a display screen to display the judgment result of the core controller. The judgment result output module is connected to the core controller to receive the judgment result, and the judgment result output module is connected to the display screen for signal feedback.

[0006] As a further embodiment of this utility model, the judgment result output module is a video signal output interface. The core controller transmits the judgment result to the video signal output interface in the form of an electrical signal, and displays the judgment result through the display connected to the video signal output interface. The video signal output interface is connected to the display screen for signal feedback.

[0007] As a further embodiment of this utility model, the video signal output interface is an HDMI interface, VGA interface, DVI interface, DP interface or Type C interface, and the video signal output interface is connected to the video input port of the monitor to realize the transmission of the judgment result.

[0008] As a further embodiment of this utility model, the judgment result output module is a buzzer. The core controller transmits the judgment result to the buzzer in the form of an electrical signal, and provides an audible prompt for the judgment result through the operation of the buzzer. The buzzer is connected to the display screen for signal feedback.

[0009] As a further embodiment of this utility model, the motherboard is also provided with a communication interface, which is connected to the core controller and realizes bidirectional signal transmission.

[0010] As a further embodiment of this utility model, the power supply interface is a Type C interface, which is connected to the core controller. The core controller is electrically connected to the display screen, video signal input interface and judgment result output module through the power supply circuit of the motherboard.

[0011] The beneficial effects of this utility model are as follows: This tester can read the EDID parameter data of the product under test and transmit the data to the display screen for display, allowing the testing personnel to know the test results. It can also be used in conjunction with the judgment result output module to further expand the display of test results, thereby providing multiple structures that can detect whether the video output port can transmit video signals normally, so as to meet the testing needs of different products in the production process. Different testing methods can be adopted according to the product's production process, making the testing operation more reasonable and smoother, which is conducive to improving production testing efficiency, ensuring the accuracy of test results, and reducing the cost required for product testing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the components of the tester.

[0013] Figure 2 This is a schematic diagram illustrating the principle of the first use case of the tester.

[0014] Figure 3 This is a schematic diagram illustrating the principle of the second use case of the tester.

[0015] In the diagram, 1. Motherboard; 11. Core controller; 12. Video signal input interface; 13. Power supply interface; 14. Judgment result output module; 141. Video signal output interface; 142. Buzzer; 15. Communication interface; 2. Display screen. Detailed Implementation

[0016] This utility model discloses a video interface signal deception tester, such as Figures 1-3 As shown, the tester includes a motherboard 1, which is equipped with a core controller 11, a video signal input interface 12, a power supply interface 13, and a judgment result output module 14. The video signal input interface 12 is used to connect to the video output port of the product under test, read parameters from the video output port of the product under test, and connect to the core controller 11 to transmit parameters. The core controller 11 is connected to a display screen 2 to display the judgment result of the core controller 11. The judgment result output module 14 is connected to the core controller 11 to receive the judgment result, and the judgment result output module 14 is connected to the display screen 2 for signal feedback.

[0017] It should be noted that when testing the signal transmission function of the video output port of the product under test, the product under test needs to be connected to a computer to provide power. When the video signal input interface 12 uses a DHMI female interface, the video output port is a DHMI sub-interface. After the video output port and video signal input interface 12 on the product under test are connected via a data transmission line, in the connected state, the video signal input interface 12 reads the EDID parameter data of the product under test through the DDC channel. The EDID parameter data of the product under test is transmitted to the core controller 11 through the video signal input interface 12. The core controller 11 analyzes the EDID parameter data, which includes video bandwidth parameters, interface version parameters, EDID automatic loop test (multiple resolutions, preferably selectable via menu, or all resolutions), video quality (color depth, aspect ratio, etc.), and volume test, and makes a judgment result. The core controller 11 transmits an electrical signal with the judgment result to the display screen 2, and the screen displays the signal. High-definition static color bar images or high-bitrate dynamic videos display the specific values ​​of the EDID parameters of the tested product. The EDID parameters of the tested product are displayed on the display screen 2 for production personnel to view. Audio playback is also provided to prompt the testing personnel, allowing them to determine whether the video signal output function of the tested product is normal based on the specific values ​​of the EDID parameters displayed on the display screen 2. Additionally, the core controller 11 transmits an electrical signal containing the judgment result to the judgment result output module 14. The judgment result output module 14 expands the display of the judgment result or displays it in a different format than the display screen. When the core controller 11 outputs the electrical signal of the test result to the judgment result output module 14, the judgment result output module 14 sends a signal feedback to the display screen 2. After receiving the feedback signal from the judgment result output module 14, the display screen 2 displays an image indicating that the judgment result output module 14 is working.

[0018] In addition, the detector can test the highest HDMI bandwidth of the tested product up to 8K 30HZ or 4K 144HZ. The HDMI product specification parameters displayed on the display screen 2 can be displayed in pages if there is too much information in the test results. The color screen of a regular large-screen mobile phone LCD is used to make the picture image as clear and stable as possible. The screen is touch-sensitive to access the display information and use the control menu.

[0019] This tester offers various structures to detect whether the video output port is transmitting video signals normally, meeting the testing needs of different products during the production process. It adopts different testing methods according to the product's production process, making the testing operation more reasonable, improving production testing efficiency, ensuring the accuracy of test results, and reducing the cost of product testing.

[0020] As one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the judgment result output module 14 is a video signal output interface 141. The core controller 11 transmits the judgment result to the video signal output interface 141 in the form of an electrical signal, and displays the judgment result through the display connected to the video signal output interface 141. The video signal output interface 141 is connected to the display screen 2 for signal feedback.

[0021] The video signal output interface 141 can be connected to a large screen. After the core controller 11 transmits an electrical signal with the judgment result to the video signal output interface 141, the video signal output interface 141 transmits a video signal to the screen. The screen displays the specific values ​​of the EDID parameters of the tested product in the form of a high-definition static color bar image or a high-bitrate dynamic video, which is more conducive to the observation of the testers during the test. In addition, the audio playback provides prompts to the testers, so that the testers can understand the test results more quickly and clearly. This structure is suitable for performance testing of the video signal output of the product during the production and R&D process. During the signal output of the video signal output interface 141, it will send a signal to the display screen 2. After receiving the signal transmitted by the video signal output interface 141, the display screen 2 will display an image prompt that the video signal output interface 141 is in working state.

[0022] Furthermore, such as Figure 2 As shown, the video signal output interface 141 is an HDMI interface, VGA interface, DVI interface, DP interface or Type C interface. The video signal output interface 141 is connected to the video input port of the monitor to realize the transmission of the judgment result.

[0023] The video signal output interface 141 can be of various types, thus enabling the tester to connect to the video input ports on displays with different video signal types. When the tester needs to connect to a display to show the specific values ​​of the EDID parameters of the product under test, it can accommodate the connection needs of different displays.

[0024] As one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the judgment result output module 14 is a buzzer 142. The core controller 11 transmits the judgment result to the buzzer 142 in the form of an electrical signal, and provides an audible prompt for the judgment result through the operation of the buzzer 142. The buzzer 142 is connected to the display screen 2 for signal feedback.

[0025] The core controller 11 transmits an electrical signal containing the judgment result to the buzzer 142. The buzzer 142 plays a sound based on the received electrical signal, providing different levels of sound recognition to remind products that meet the test results and those that do not. The testers can understand the test results by listening to the prompts played by the buzzer 142 and seeing the specific values ​​of the EDID parameters of the tested product displayed on the display screen 2. This structure is suitable for performance testing of product video signal output when testing a large number of mature products in a factory. During the operation of the buzzer 142, it sends a signal to the display screen 2. After receiving the signal transmitted by the buzzer 142, the display screen 2 will display an image indicating that the buzzer 142 is in working condition.

[0026] It needs to be further explained that, such as Figure 1 As shown, the motherboard 1 is also provided with a communication interface 15, which is connected to the core controller 11 and realizes bidirectional signal transmission.

[0027] The tester also has a reserved communication interface 15. The core controller 11 can retrieve the test results of the EDID parameters of the product under test from the communication interface 15, so that the testers can save the test data. The communication interface 15 can also be used as a test control interface for automated factories. The host device is connected to the communication interface 15, and the host device transmits control commands to the core controller 11. The core controller 11 then outputs signals to the display screen 2, controlling the display screen 2 to selectively display EDID parameter data including video bandwidth parameters, interface version parameters, EDID automatic loop test, video quality, and volume test. The content displayed on the display screen 2 can be adjusted by selecting the EDID parameter data to be displayed in the software equipped in the host device.

[0028] It needs to be further explained that, such as Figure 1As shown, the power supply interface 13 is a Type C interface, which is connected to the core controller 11. The core controller 11 is electrically connected to the display screen 2, the video signal input interface 12, and the judgment result output module 14 through the power supply circuit of the motherboard 1.

[0029] The power supply interface 13 allows the detector to be directly connected to an external power source, enabling the tester to operate under a stable voltage and preventing power supply issues from affecting the tester's detection results of the product's EDID parameter data. Furthermore, the core controller 11 can allocate the operating power of the display screen 2, video signal input interface 12, and judgment result output module 14 to ensure that the detector can normally test the product.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A video interface signal decoy tester, the tester comprising a motherboard, characterized in that, The motherboard is equipped with a core controller, a video signal input interface, a power supply interface, and a judgment result output module. The video signal input interface is used to connect to the video output port of the product under test, read parameters from the video output port of the product under test, and connect to the core controller to transmit parameters. The core controller is connected to a display screen to display the judgment result of the core controller. The judgment result output module is connected to the core controller to receive the judgment result, and the judgment result output module is connected to the display screen for signal feedback.

2. The tester according to claim 1, characterized in that, The judgment result output module is a video signal output interface. The core controller transmits the judgment result to the video signal output interface in the form of an electrical signal, and displays the judgment result through the display connected to the video signal output interface. The video signal output interface is connected to the display screen for signal feedback.

3. The tester according to claim 2, characterized in that, The video signal output interface is an HDMI interface, VGA interface, DVI interface, DP interface or Type C interface, and the video signal output interface is connected to the video input port of the monitor to realize the transmission of the judgment result.

4. The tester according to claim 1, characterized in that, The judgment result output module is a buzzer. The core controller transmits the judgment result to the buzzer in the form of an electrical signal, and provides an audible prompt for the judgment result through the operation of the buzzer. The buzzer is connected to the display screen for signal feedback.

5. The tester according to claim 1, characterized in that, The motherboard is also equipped with a communication interface, which is connected to the core controller and enables bidirectional signal transmission.

6. The tester according to claim 1, characterized in that, The power supply interface is a Type-C interface, which is connected to the core controller. The core controller is electrically connected to the display screen, video signal input interface, and judgment result output module through the power supply circuit of the motherboard.

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