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Circuit board detection method and device

A circuit board and integrated circuit technology, applied in the field of signal processing, can solve the problems of high price, reduce work efficiency, increase production cost, etc., achieve the effect of low cost, improve work efficiency, and reduce production cost

Inactive Publication Date: 2012-05-16
SHENZHEN MTC
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AI Technical Summary

Problems solved by technology

[0002] At present, when classifying and testing circuit boards, the signal source is manually switched, and different testing instruments are used to switch between the voltage detection of the integrated circuit chip of the circuit board, the video signal output detection and the audio signal output detection. All items of detection are judged according to their own subjective standards. This detection method relying on subjective experience makes the detection results of the above-mentioned integrated circuit chip voltage detection, video signal output detection and audio signal output detection good and bad, reducing In addition, the instruments for video signal output detection are generally imported instruments, which are expensive and increase production costs.

Method used

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  • Circuit board detection method and device
  • Circuit board detection method and device

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Embodiment Construction

[0023] Such as figure 1 As shown, the embodiment of the present invention provides a circuit board detection method, which is based on a circuit board, the circuit board includes one or more integrated circuits (Integrated Circuit, IC) chips that provide the voltage to be tested, one or more A video output point that provides the current video signal and one or more audio output points that provide the current audio signal, etc., the main flow of the circuit board detection method is as follows:

[0024] 101. Initialize and wait for instructions from the host computer;

[0025] 102. Accept the instruction of the host computer to start the test of the circuit board;

[0026] 103. To test the voltage of the IC chip on the circuit board, first obtain the voltage to be measured on the IC chip. Specifically, each voltage to be measured can be obtained through an ADC sampling, and each IC chip has a different voltage to be measured;

[0027] 104. Determine whether the voltage to b...

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Abstract

The embodiment of the invention relates to a video detection method, which mainly comprises the following steps of: acquiring a phase point to be detected from a static picture acquired by current video signal output; judging whether the phase point to be detected is within a predetermined phase point range; and if the phase point to be detected is within the predetermined phase point range, showing that the current video signal output is qualified. The embodiment of the invention also provides a circuit board detection method, a corresponding video detection device and a circuit board detection device. The video detection method, the circuit board detection method and the corresponding device in the embodiment of the invention can provide a detection standard for the video signal output, so the problem of an unstable detection result for video signal output detection by a detection mode dependent on subjective experience is solved. Therefore, the working efficiency is improved. Furthermore, the video detection device has simple operation and low cost, and the production cost is lowered.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a circuit board detection method and device. Background technique [0002] At present, when classifying and testing circuit boards, the signal source is manually switched, and different testing instruments are used to switch between the voltage detection of the integrated circuit chip of the circuit board, the video signal output detection and the audio signal output detection. All items of detection are judged according to their own subjective standards. This detection method relying on subjective experience makes the detection results of the above-mentioned integrated circuit chip voltage detection, video signal output detection and audio signal output detection good and bad, reducing In addition, the instruments for video signal output detection are generally imported instruments, which are expensive and increase the production cost. Contents of the invention [0003] The t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00
Inventor 张永辉
Owner SHENZHEN MTC
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