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Method for preventing SRAM (Static Random Access Memory) single event upset based on coding mode

A technology of single event flipping and encoding method, which is applied in the field of preventing SRAM single event flipping and preventing SRAM single event flipping based on encoding method, which can solve the problem of high storage space requirements and achieve the effect of overcoming the influence of stored data

Inactive Publication Date: 2012-07-18
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

However, triple-mode redundancy technology requires three backups of one data, which requires relatively high storage space.

Method used

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  • Method for preventing SRAM (Static Random Access Memory) single event upset based on coding mode
  • Method for preventing SRAM (Static Random Access Memory) single event upset based on coding mode
  • Method for preventing SRAM (Static Random Access Memory) single event upset based on coding mode

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Embodiment Construction

[0012] The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:

[0013] Such as figure 1 Shown, the realization process of the present invention is:

[0014] (1) At first the image data is first carried out vertical encoding in FPGA, then horizontal encoding is carried out, and the image data after encoding is stored in the SRAM, wherein the method of vertical encoding is: the image data is carried out in units of pixels (12, 8) vertical coding storage; the method of horizontal coding is: carry out horizontal coding storage to the image data after vertical coding, and the coding mode is to carry out (12,8) coding respectively to the same bit data in every eight pixels;

[0015] (2) When using the image data stored in the SRAM, first perform horizontal decoding on the image data stored in the horizontal encoding, and realize the correction of the image data overturned by a single particle. The horizontal d...

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Abstract

The invention discloses a method for preventing SRAM (Static Random Access Memory) single event upset based on a coding mode, comprising the following steps of: carrying out longitudinal (12,8) coding on image data to be stored in an SRAM by taking a pixel as a unit; carrying out lateral (12,8) coding on data on the same position in every eight pixels; storing the image data in the SRAM accordingto a two-time coding format; and during single event upset, upsetting the image data stored in the SRAM. In the method, the image data with single event upset are subjected to the lateral (12,8) coding operation, and the decoding process has a certain action on correcting errors for data, and can correct image data stored in the SRAM and upset by the single event so as to overcome the defect thatexcessive storage resources on a chip are occupied with the traditional method.

Description

technical field [0001] The invention relates to a method for preventing SRAM single-event reversal, in particular to a method for preventing SRAM single-event reversal based on an encoding mode, and belongs to the field of aerospace remote sensor electronics. Background technique [0002] Lightweight and low-power area array CMOS cameras have been widely used in satellite body mechanisms, deep space exploration, video telemetry on space stations and spacecraft. Carry out monitoring and evaluation, and provide image basis for scientific researchers to judge satellite working conditions on the ground, and have been successfully applied to many models. Due to the limited capacity of the data channel between the satellite and the ground, in order to reduce the amount of data transmitted by the camera, it is generally required that the camera can compress the image in real time, but the compression algorithm is relatively complicated, and relying solely on the resources on the FP...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/10
Inventor 张宏伟黄长宁陈彦胡永富林宏宇李晨曦吴雁林李天黄昊孟林智朱军温博郭强
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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