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Trigger matching device and method based on content addressable storage

A content addressing and matching device technology, applied in the direction of input/output to record carrier, etc., can solve the problems of slow matching speed and long matching time, achieve low cost, strong versatility, and avoid the consumption of storage resources.

Active Publication Date: 2018-01-30
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention aims to solve the problems of long matching time and slow matching speed required by the existing trigger matching method

Method used

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  • Trigger matching device and method based on content addressable storage
  • Trigger matching device and method based on content addressable storage
  • Trigger matching device and method based on content addressable storage

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0037] image 3 Schematic diagram of FPGA core structure realized by the trigger matching device based on Content Addressable Memory (CAM) proposed by the present invention. Such as image 3 As shown, the device is used to obtain valid data from an externally input data signal, and at least includes a CAM module and a dual-port RAM module.

[0038] The CAM module is used to receive the data signal and store the matching time information matched with the data signal, and find valid data from the data signal according to a given keyword, and provide the matching time information corresponding to the valid data in The corresponding address in the CAM module; the dual-port RAM module is used to receive the data signal synch...

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Abstract

The invention discloses a trigger matching device and method based on content addressing storage, which is used to obtain valid data from an externally input data signal. The device includes a CAM module and a dual-port RAM module, and the CAM module is used to receive the data signal and store the matching time information matched with the data signal, and find valid data from the data signal, and provide the address corresponding to the matching time information corresponding to the valid data in the CAM module; the dual The port RAM module is used to receive the data signal synchronously with the CAM module and store the matching time information matched with the data signal in parallel, and output and locate in the dual-port RAM module according to the address given by the CAM module. The valid data corresponding to the matching time data of the same address. The invention has universality, ease of use and flexibility, can be used in various data acquisition systems involving trigger selection control, has simple implementation, low cost, and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of data collection and automatic control, in particular to a trigger matching device and method based on content addressable storage. Background technique [0002] In the field of data acquisition, especially the field of data acquisition and acquisition involving trigger control, such as high-energy physics, nuclear physics experiments, etc., the operation of the system is affected and restricted by a specific external control signal (called a trigger signal). Generally, only when the data acquisition system detects the arrival of an effective trigger signal, will the relevant collected data be stored. This process is generally called trigger judgment. The data information that passes the trigger judgment is called a valid case, and the data that fails The selected ones are called background cases. A good trigger selection system requires keeping good cases and eliminating backgrounds as much as possible. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 曹平范欢欢安琪刘树彬
Owner UNIV OF SCI & TECH OF CHINA