A Real-time Extraction and Superposition Method of Absolute Time

A superposition method and absolute time technology, applied in color TV parts, TV system parts, TV and other directions, can solve the problems of difficult data analysis, difficult analysis of video signals, etc., to achieve accurate analysis, fast search and elimination. Effect

Active Publication Date: 2018-01-30
JIANGXI HONGDU AVIATION IND GRP
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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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  • A Real-time Extraction and Superposition Method of Absolute Time

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following examples are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention.

[0018] refer to figure 1 , a real-time extraction and superposition method of absolute time of the present invention, comprising the following steps:

[0019] 1) When MCU 2 is powered on and initialized, the I 2 The C serial interface sets the clock line in the clock chip 1 to a high level, and the level of the data line remains unchanged; at this time, the single-chip microcomputer 2 reads the time data sent by the time chip 1 once; the subsequent time is accumulated according to the frame period;

[0020] 2) SCM 2 sends the time data to superposition chip 3, and superposition chip 3 uses its own font library to convert the time data of BCD code into time string information, and the built-in p...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/76
Inventor 张玉新袁飞马马文超赵广超李科连唐旭周曦王先发
Owner JIANGXI HONGDU AVIATION IND GRP
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