A Real-time Extraction and Superposition Method of Absolute Time

Abstract

The invention discloses a method for real-time extraction and superposition of absolute time, which adopts a large-scale integrated chip FPGA as a control and data processing chip; uses a single-chip microcomputer as a time extraction and processing chip; and selects a superposition chip with its own font library and a video input interface Realize the function of video image and time superimposition; when reading data after the test, search and extract the time according to the designed frame format as the file name of the read data. The invention realizes the month, day, hour, minute, and second of the power-on time as the file name of the data stored in the data recording system, and at the same time superimposes the test time (displayed as the month, day, hour, minute, and second) in real-time synchronously for the collected and stored video images, and solves the problem of multiple tests. When all data is read back for analysis, the data file cannot correspond to the test conditions and test process.

Description

technical field [0001] The invention relates to a real-time extraction and superimposition method of absolute time, in particular to a method for superimposing absolute time on recorded video signals by using the absolute time at which the test was started after power-up as the file name for the data file recorded by the data recording system method. Background technique [0002] At present, the data recording system used on the aircraft usually adopts the "count" method (such as: 001, 002, ...) or "address" method as the file name of the stored data. It is difficult to combine the stored data with the specific situation of absolute time for data analysis when analyzing the test situation; moreover, the video signal output by the seeker of most aircraft does not contain absolute time information, so it is difficult for the video signal to be correlated with the data file. combined for analysis. [0003] Therefore, it is necessary to provide a new technical solution to solv...

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Problems solved by technology

[0002] At present, the data recording system used on the aircraft usually adopts the "count" method (such as: 001, 002, ...) or "address" method as the file name of the stored data. It is difficult to combine the stored data with the specific situation of absolute time for data analysis when analyzing the test situation; moreover, the video signal output by the seeker of most aircraft does not contain absolute time information, so it is difficult for the video signal to be correlated with the data file. combine for analysis

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