Display HDCP auto-detect apparatus

Abstract

This utility model discloses an automatic HDCP testing device for displays, including a PC, an HDCP testing instrument, and a barcode scanner connected to the PC. The HDCP testing instrument has two or more test interfaces. One or more display devices under test are electrically connected to the HDCP testing instrument through the test interfaces, with each display device under test connected to one test interface. The HDCP testing instrument detects the HDCP status of each display device under test during communication with the test interfaces and outputs an HDCP status signal in real time. The HDCP status includes the HDCP version and the unique HDCP key (KSV). The barcode scanner is used to scan the barcode affixed to the display device under test, which contains the device's serial number. The PC is connected to the HDCP testing instrument via a serial port and to a MES system via a network port. The MES system carries a database of device information that has passed the test for data comparison. This utility model avoids omissions caused by manual testing and ensures the traceability of test data.

Description

Technical Field

[0001] This utility model relates to the field of display testing equipment technology, and in particular to an automatic HDCP testing device for displays. Background Technology

[0002] HDCP testing of a monitor first requires connecting the monitor under test and the HDCP testing instrument. The instrument then outputs a test screen and begins testing for HDCP, reading the HDCP version. A successful test displays "PASS," while a failed test displays "FAIL." The test screen will be displayed on the monitor under test. Manually check if the HDCP is OK and confirm the HDCP version.

[0003] High-end monitors may have multiple HDCPs burned into them. When testing different versions of HDCPs, instruments need to be manually set to switch to the corresponding test screen, which is inconvenient and prone to errors. Manual testing and judgment lack effective system error prevention, making it easy to miss tests and resulting in a lack of traceability. Utility Model Content

[0004] The purpose of this invention is to provide an automatic HDCP detection device for displays.

[0005] The technical solution adopted in this utility model is:

[0006] This automatic HDCP testing device for displays is suitable for detecting the HDCP status of display devices. The device includes a PC, an HDCP testing instrument, and a barcode scanner connected to the instrument. The HDCP testing instrument has two or more test interfaces. One or more display devices under test are electrically connected to the instrument through these interfaces, with each device connected to one interface. The HDCP testing instrument detects the HDCP status of each device during communication with the test interfaces and outputs an HDCP status signal in real time. The HDCP status includes the HDCP version and the unique HDCP key (KSV). The barcode scanner scans the barcode affixed to the display device under test, which contains the device's serial number. The PC connects to the HDCP testing instrument via a serial port and obtains the HDCP status of the display device under test from the instrument via serial commands. The PC connects to the MES system via a network port. The MES system contains a database of device information that has passed testing and is used for data comparison.

[0007] Furthermore, the display device under test is connected to the test interface of the HDCP testing instrument via a test cable.

[0008] Furthermore, the HDCP testing instrument uses an HDMI interface for testing and an HDMI signal cable for testing.

[0009] Furthermore, the barcode scanner reads the first barcode into the test program, which then retrieves information such as the work order, device name, and HDCP version from the MES system using the barcode. The barcode scanner reads subsequent barcodes into the test program, prioritizing a check to see if the work order matches the first display device under test. If they do not match, a work order discrepancy message will be displayed to prevent work orders from being mixed up.

[0010] Furthermore, the model information includes the model name and HDCP version;

[0011] Furthermore, the test program obtains the HDCP status of the display device under test from the HDCP testing instrument by sending commands via the serial port.

[0012] Furthermore, the test program compares the HDCP status of the display device with the corresponding model information recorded in the database of the MES system. If they match, a green "PASS" is displayed; if they do not match, a red "FAIL" is displayed, along with the reason for the error.

[0013] Furthermore, each display device under test has more than one HDCP version, and each HDCP version has a corresponding unique code KSV.

[0014] Furthermore, the test program is used to detect the HDCP status of each display device under test and compare it with the model information provided by the remote MES system.

[0015] This utility model employs the above technical solution for HDCP key unique code (KSV) detection and HDCP version error prevention for displays. This utility model automatically performs one-time detection of multiple HDCP key KSVs for the same display, comparing them with the model information provided by a remote server to determine the correctness of the HDCP version, number of versions, and KSVs. Simultaneously, the test results are uploaded to the production testing system to address system oversight issues, avoid omissions caused by manual testing, and ensure the traceability of test data. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments;

[0017] Figure 1 This is a schematic diagram of the HDCP automatic detection device for displays according to this utility model;

[0018] Figure 2 This is a schematic diagram of the detection process according to an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0020] like Figure 1 As shown in Figure 2, this utility model discloses an automatic HDCP testing device for displays, suitable for detecting the HDCP status of display devices. The testing device includes a PC, an HDCP testing instrument, and a barcode scanner connected to the HDCP testing instrument. The HDCP testing instrument has two or more test interfaces. One or more display devices under test are electrically connected to the HDCP testing instrument through the test interfaces, and each display device under test is connected to one test interface. The HDCP testing instrument detects the HDCP status of each display device under test during communication with the test interfaces and outputs an HDCP status signal in real time. The HDCP status includes the HDCP version and the HDCP key unique code KSV. The barcode scanner is used to scan the barcode affixed to the display device under test, which contains the device's serial number. The PC is connected to the HDCP testing instrument via a serial port. The PC is connected to the MES system via a network port. The MES system is equipped with a database of device information that has passed the testing and is used for data comparison.

[0021] Furthermore, the display device under test is connected to the test interface of the HDCP testing instrument via a test cable.

[0022] Furthermore, the HDCP testing instrument uses an HDMI interface for testing and an HDMI signal cable for testing.

[0023] Furthermore, the test program on the PC retrieves the work order number and machine type information from the MES system;

[0024] Furthermore, the model information includes the model name and HDCP version;

[0025] Specifically, the test program compares the HDCP status of the display device with the corresponding model information recorded in the database of the MES system. If they match, it displays green "PASS"; if they do not match, it displays red "FAIL" and indicates the reason for the error.

[0026] Furthermore, each display device under test has more than one HDCP version, and each HDCP version has a corresponding unique code KSV.

[0027] Furthermore, the test program is used to detect the HDCP status of each display device under test and compare it with the model information provided by the remote MES system.

[0028] like Figure 2 As shown, as a feasible application scheme, a feasible implementation process for HDCP testing using the HDCP automatic testing device for displays of this utility model is as follows:

[0029] 1. Connect the monitor under test to the HDCP testing instrument using an HDMI cable. 2. Open the test program and start the test by entering the machine serial number using a barcode scanner. 3. The program retrieves the model information (model name, HDCP version) from the MES system using the serial number. If the corresponding HDCP version is not found, it indicates that the model is being produced for the first time. A dialog box will pop up prompting the operator to check the BOM system to select the HDCP version to be tested. If the HDCP version is found, its version information is recorded. 4. During the first test after the program runs, interface test commands will be sent to the instrument in a loop to determine which interface is connected to the monitor under test. Subsequent tests will not send interface test commands (the instrument has multiple HDMI interfaces, and subsequent test commands must contain the instrument's interface information). 5. The program sends commands to switch the timing (resolution) and pattern (image quality) to read HDCP version 1.4 and its KSV (video encryption key). 6. The program sends commands to switch the timing and pattern to read HDCP version 2.2 and its KSV. 7. Compare the KSV with the KSV from the previous machine. If they are the same, report an error to prevent batch duplication of HDCP. 8. Compare the read HDCP version with the version recorded on the system. If they do not match, report an error (the read HDCP version must match the one recorded on the system. For example, if the system records HDCP version 1.4, the program's test result should be 1.4 OK, 2.2 NG; if the system records versions 1.4 and 2.2, the program's test result should be 1.4 OK, 2.2 OK). If they match, display "pass". This prevents incorrect or missed HDCP updates. 9. If the test result is "pass", upload the HDCP version and unique KSV to the MESS system. If the test result is "FAIL", report an error and prompt for manual handling.

[0030] This utility model employs the above technical solution for HDCP key unique code (KSV) detection and HDCP version error prevention for displays. This utility model automatically performs one-time detection of multiple HDCP key KSVs for the same display, comparing them with the model information provided by a remote server to determine the correctness of the HDCP version, number of versions, and KSVs. Simultaneously, the test results are uploaded to the production testing system to address system oversight issues, avoid omissions caused by manual testing, and ensure the traceability of test data.

[0031] Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Without conflict, the embodiments and features in the embodiments of this application can be combined with each other. The components of the embodiments of this application described and illustrated herein can generally be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

Claims

1. A display HDCP auto-detecting apparatus, adapted to detect the HDCP status of a display device; characterized in that: The testing device includes a PC, an HDCP testing instrument, and a barcode scanner connected to the PC. The HDCP testing instrument has two or more test interfaces. One or more display devices under test (DUTs) are electrically connected to the HDCP testing instrument through the test interfaces, with each DUT connected to one test interface. The HDCP testing instrument detects the HDCP status of each DUT during communication with the test interfaces and outputs an HDCP status signal in real time. The HDCP status includes the HDCP version and the HDCP key unique code (KSV). The barcode scanner is used to scan the barcode affixed to the DUT that contains the device's serial number. The PC is connected to the HDCP testing instrument via a serial port and to the MES system via a network port. The MES system carries a database of device information that has passed the testing and is used for data comparison.

2. The display HDCP auto-detect apparatus of claim 1, wherein: The PC records the HDCP version information and KSV information for each display device under test.

3. The display HDCP auto-detect apparatus of claim 1, wherein: The model information includes the model name and HDCP version.

4. The display HDCP auto-detect apparatus of claim 1, wherein: The PC communicates with the HDCP testing instrument via a serial port to obtain the HDCP status of the monitor under test.

5. The automatic HDCP detection device for displays according to claim 1, characterized in that: Each display device under test has more than one HDCP version, and each HDCP version has a corresponding unique code KSV.

6. The display HDCP auto-detect apparatus of claim 1, wherein: The HDCP testing instrument is used to detect the HDCP status of each display device under test and compare it with the model information provided by the remote MES system.

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