Data storage and search method for solid-state recording equipment

A recording device and data storage technology, applied in the field of avionics, can solve problems such as user misunderstanding and achieve the effect of improving download speed

Inactive Publication Date: 2019-04-05
SHAANXI QIANSHAN AVIONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the field of aviation airborne equipment, the local time (hour, minute and second) information is usually used as the name of the resume information file, but due to the time difference between the local time and the on-board time, this will cause misunderstanding to the user, so it is necessary to design a system that does not rely on the local time A method for data storage of information and the ability to quickly look up data recorded by a logger

Method used

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  • Data storage and search method for solid-state recording equipment

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0041] Firstly, according to the feature that the minimum erasing unit of NAND FLASH is a block, and a block is composed of pages, data is stored in a sequential manner. When the storage capacity reaches the last block of data capacity, the data stored in the first block is automatically erased, and at the same time During data storage, each data consists of several data blocks, as shown in Table 2. Each data block includes a data index area and a valid data area, and the data index includes flight information and year, month, and day information, as shown in Table 1.

[0042] 4byte

8 bytes

flight information

Biographical Information (Year+Month+Day)

[0043] illustrate:

[0044] a) Flight information: represents the flight number of the current flight number;

[0045] b) History information: the history information representin...

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Abstract

The invention belongs to the technical field of avionics, and particularly relates to a data storage and search method for solid-state recording equipment. The method comprises the following steps: firstly, reading data flow information including current flight information and year, month and day information; Secondly, judging and recording the working state of equipment; Thirdly, extracting a data information judgment instruction; And finally, performing storage or search according to the instruction in combination with the initial position and the end position of the current data. The methodcan effectively solve the problem that the recorded data depends on the local time, solves the problem that the local time and the on-board time are not uniform, and provides a flexible data downloading mode.

Description

technical field [0001] The invention belongs to the technical field of avionics, and in particular relates to a data storage and searching method of a solid-state recording device. Background technique [0002] NAND FLASH Memory is a point-erasable read-write non-volatile memory. It has the advantages of high density, low cost, non-volatility, low power consumption, fast reading and writing and erasing speed, and is widely used in the data storage of protective recorders and cache recorders in flight reference systems. In the field of aviation airborne equipment, the local time (hour, minute and second) information is usually used as the name of the resume information file, but due to the time difference between the local time and the on-board time, this will cause misunderstanding to the user, so it is necessary to design a system that does not rely on the local time A method for data storage of information and the ability to quickly search for data recorded by a logger. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/064G06F3/0679
Inventor 屠晓涛
Owner SHAANXI QIANSHAN AVIONICS
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