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Loopback test method for HDMI repeater equipment

A loopback test, HDMI cable technology, applied in the direction of TV, electrical components, image communication, etc., can solve the problems of complex test equipment environment, complex cable connection, low test efficiency, etc., to achieve automatic test, simplify equipment, improve test The effect of efficiency

Pending Publication Date: 2022-01-07
GUANGDONG BOHUA UHD INNOVATION CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing test methods require the use of high-definition players and TV sets, with many devices and complicated cable connections. Repeaters generally have multiple output ports, and it is necessary to connect multiple TVs for testing or use one TV to test multiple output ports sequentially. Testing, testing equipment and environment are complex, and testing efficiency is low

Method used

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  • Loopback test method for HDMI repeater equipment
  • Loopback test method for HDMI repeater equipment
  • Loopback test method for HDMI repeater equipment

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Embodiment Construction

[0019] In order to make the purpose, technical method and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples. These examples are illustrative only and not limiting of the invention.

[0020] The present invention realizes the loopback testing method by designing a device that can both send and receive HDMI signals, and can compare the sent and received HDMI signals.

[0021] Working principle of the present invention is:

[0022] First of all, the HDMI repeater is used as an HDMI receiving device. The HDMI source device of the test device will confirm whether the repeater device has been connected normally by detecting HPD. HPD is HDMI hot plug detection. If HPD is high, the instructions The repeater has been connected, and the next step of communication can be carried out. Next, the Extended Display Identification Data (EDID) information of the repeat...

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Abstract

The invention provides a loopback test method for HDMI repeater equipment, the HDMI repeater equipment is used as HDMI source equipment and HDMI receiving equipment in the working process, the loopback test method can be adopted for testing, the loopback test is carried out by sending HDMI signals to the HDMI repeater equipment, the repeater processes output and then outputs the output through an HDMI output interface. According to the loopback test method, the HDMI signal output by the repeater is collected and compared with the HDMI signal input to the repeater, if the signals are consistent, it is indicated that the HDMI repeater equipment works normally, and through the loopback test method, a device capable of generating the HDMI signal, receiving the HDMI signal and carrying out DDC signal detection, HDCP authentication and HDMI data signal comparison is needed. According to the method, the HDMI repeater test can be completed only after the test is completed, equipment used by an existing test method can be simplified, automatic test is realized, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the field of high-definition multimedia interface (HDMI) product testing, in particular to a loopback testing method for HDMI repeater equipment. Background technique [0002] High-definition multimedia interface (HDMI) devices are generally divided into three types, HDMI source device (source) is the generation and output device of HDMI signal, HDMI sink device (sink) is the receiving and processing device of HDMI signal, and repeater device is the receiving and processing device of HDMI signal. The signal is a device that sends out the HDMI signal after processing, and it has the functions of an HDMI source device and an HDMI sink device at the same time. The HDMI repeater device is a device that receives HDMI signals, amplifies them, or mirrors them into multiple signals for output. The common ones are HDMI repeater amplifiers and HDMI multiplexers. HDMI repeater devices usually have one HDMI input port and one or more HDMI...

Claims

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Application Information

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IPC IPC(8): H04N17/00
CPCH04N17/00
Inventor 曾辉龙仕强陈智敏彭辉
Owner GUANGDONG BOHUA UHD INNOVATION CENT CO LTD
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