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Portable video signal testing equipment

A technology of video signal and testing equipment, which is applied in the direction of TV, image communication, electrical components, etc., to ensure the decoding accuracy and solve the problem of portable field testing

Inactive Publication Date: 2013-03-27
陈利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In a word, the present invention solves the problem of portable field testing of multi-interface and multi-system video signals

Method used

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  • Portable video signal testing equipment
  • Portable video signal testing equipment
  • Portable video signal testing equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: The central control programmable array FPGA selects channel 1, that is, the decoded data realized by Verilog or VHDL logic as the final decoded data output.

Embodiment 2

[0044] Embodiment 2: The central control programmable array FPGA selects the splicing of channel 1 and channel 2 as the final decoded data output. An embodiment of splicing is: the data of channel 1 is used for the line blanking part, and the data of channel 2 is used for the effective sampling point part of each row.

[0045] Module 6: Digital video decoding module.

[0046] This module decodes digital video signal to YCbCr video data. Digital video signals include HDMI, DisplayPort, DVI, and WirelessHD wireless interfaces. An embodiment of the digital video decoding module adopts a digital video integrated decoding chip to decode input digital video signals such as HDMI into YCbCr video data.

[0047] Module 7: Video encoding / standard conversion module.

[0048] This module re-encodes the video data YCbCr into a video signal for external monitors and monitors to display.

[0049] An embodiment of this module is to convert video data YCbCr from the same input source into ...

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Abstract

The invention provides portable video signal testing equipment comprising a testing module and an upper computer. Video signals are inputted to the testing module of the portable video signal testing equipment via a video interface. After being subjected to balanced-unbalanced conversion, the testing module can perform AD (analog digital) sampling according to the interface type and acquire video data, the data are fed back to the upper computer or recorded and stored before being fed back to the upper computer in real time via a portable interface, the upper computer displays, tests, analyzes the video data and performs man-machine interaction with the video data, the video data are reduced to the video signals after video coding or system conversion and outputted to external monitoring and displaying equipment. The portable video signal testing equipment can test extensive video signals of simulated composited videos, component videos and digital videos, has two modes of real-time testing and record playback, is in portable design and applicable to field test application of multiple kinds of video equipment like set-top boxes and video communication network.

Description

technical field [0001] The invention relates to the technical field of video signal testing, and proposes a design method for portable test equipment compatible with analog composite, component and digital interfaces. Background technique [0002] Audio and video products cover a wide range of TVs, cameras, and portable devices. At present, audio and video products are undergoing a major change from analog to digital, from standard definition to high definition, and the interface form has also developed from CVBS analog composite and YPbPr component to DVI, HDMI, DisplayPort digital, and is developing towards wireless interconnection in the future. The development of the industry has put forward unprecedented requirements for standards, testing and measurement and calibration technologies. Product detection is mainly divided into two categories: source and sink, including general parameters such as amplitude, phase, timing, and frequency, as well as special video signals fo...

Claims

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Application Information

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IPC IPC(8): H04N17/00H04N17/02
Inventor 陈利
Owner 陈利
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