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Device and method for parallel decoding of software and hardware

A decoding device and hardware decoding technology are applied in the field of decoding to achieve the effect of improving security

Active Publication Date: 2012-02-22
BEIJING JIAODA SIGNAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the security problems caused by co-cause failure in the decoding and output process, improve the security of the transponder user message, and achieve the safety integrity level required by the train operation control system, the invention provides a software and hardware parallel decoding device with method

Method used

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  • Device and method for parallel decoding of software and hardware
  • Device and method for parallel decoding of software and hardware
  • Device and method for parallel decoding of software and hardware

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Embodiment 1

[0023] The embodiment of the present invention provides a software and hardware parallel decoding device, which solves the safety problem caused by common cause failure in the decoding process, further avoids the potential safety hazard caused by message errors in the decoding and dumping process, and improves the efficiency of the transponder. The security of user messages has reached the security integrity level required by the train operation control system.

[0024] Such as figure 1 As shown, a software and hardware parallel decoding device includes: a hardware decoding module 101, a software decoding module 102, a message comparison module 103 and a data packet composition module 104;

[0025] Wherein, the hardware decoding module 101 is used to decode the received transponder transmission message to obtain the transponder user message;

[0026] The software decoding module 102 is used to decode the received transponder transmission message to obtain the transponder user...

Embodiment 2

[0061] The embodiment of the present invention provides a software and hardware parallel decoding method, such as image 3 As shown, the details are as follows:

[0062] S1: The hardware processor decodes the received transponder transmission message to obtain the transponder user message, and the synchronized software processor also decodes the received transponder transmission message to obtain the transponder user message;

[0063] S2: comparing whether the transponder user message decoded by the hardware processor is consistent with the transponder user message decoded by the software processor;

[0064] If inconsistent, return to S1;

[0065] If they are consistent, the responder user message is formed into a data packet and sent to the peripheral device.

[0066] Wherein, in this embodiment, the decoding of the transponder transmission message by the hardware processor refers to the decoding of the received transponder transmission message by a pure hardware method, an...

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Abstract

The invention discloses a device and a method for parallel decoding of software and hardware. The device comprises a hardware decoding module, a software decoding module, a message comparison module and a data packet composition module, wherein the hardware decoding module is used for decoding a transponder transmission message which is received to obtain a transponder user message; the software decoding module is used for decoding the transponder transmission message which is received to obtain the transponder user message; the message comparison module is used for comparing whether the transponder user message which is obtained by using the hardware decoding module accords with the transponder user message which is obtained by using the software decoding module; and the data packet composition module is used for composing the transponder user message which is obtained by using the hardware decoding module with the transponder user message which is obtained by using the software decoding module into a data packet and sending the data packet to peripheral equipment. By adoption of the device and the method provided by the invention, the problem of safety caused by common-cause failure in the decoding process is solved, potential safety hazard caused by message error in the decoding and dumping processes is further avoided, the safety of the transponder transmission messages is improved, and the safety integrity level required by a train operation control system is achieved.

Description

technical field [0001] The present invention relates to the technical field of decoding, in particular to a software and hardware parallel decoding device and method. Background technique [0002] The transponder transmission message encoding algorithm is defined in detail in "Form Fit Function Specification Coding Strategy", and the decoding process is defined in its appendix A. The decoding process includes CRC check, n+r comparison, synchronization, legality detection, reverse Transposition detection, control bit detection, and 10-to-11-bit inverse conversion and other decoding processes, as can be seen from the above decoding process, the decoding process has many steps and a large amount of calculation. There are safety hazards in the decoding and dumping process, and it is difficult to reach the train. The safety integrity level required to operate the control system. [0003] An effective solution to the above problems is to use a redundant decoding method to complet...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16
Inventor 赵会兵李义王耀辉寇永砺
Owner BEIJING JIAODA SIGNAL TECH
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