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Data buffering method and system

A technology of data buffering and buffering, which is applied in the field of data communication to achieve high real-time performance, reduce the number of packed bytes, and simplify the analysis process

Active Publication Date: 2012-11-21
ANHUI CHAOHU HAIXING CABLE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the situation where the buffer in the CPU of the communication expansion board is limited, the above buffering techniques are not applicable, and a buffering mechanism that occupies as little memory space as possible is required

Method used

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  • Data buffering method and system

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Embodiment Construction

[0033] The main control device of the monitoring unit and the communication expansion board in the railway signal power supply system of the new architecture in the embodiment of the present invention communicate through the CAN bus, and the communication expansion board temporarily stores the data of the lower-level modules collected and waits for the query data command from the main control device , and then upload the data. According to this requirement, it is proposed to adopt the communication buffer technology of single buffer in the embodiment of the present invention in the communication expansion board of the monitoring unit of the new architecture to realize it.

[0034] Single buffering, a buffer is set between the main control device and the communication expansion board, that is, a buffer is opened in the communication expansion board to store updated data. When the main control device exchanges data with the communication expansion board, it first writes the exch...

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Abstract

The invention discloses a data buffering method and system. The data buffering method includes that: a master control device issues configuration information to a communication expansion board which determines the number of lower-level modules according to the configuration information and initializes a buffering area; the communication expansion board checks lower-level module data at intervals of preset time and refreshes the lower-level module data to the buffering area; and the master control device checks the lower-level module data, and the communication expansion board feeds buffered module data back to the master control device. According to the data buffering method and system, internal memory can be reduced, timeliness is high, data checking of the master control device for the communication expansion board and data checking of the communication expansion board for the modules are independent mutually, and communication duration is saved.

Description

technical field [0001] The invention relates to the technical field of data communication, in particular to a data buffering method and system. Background technique [0002] Buffering is the work of coordinating data transfers between devices with widely varying data traffic speeds. Buffering should be used where the arrival and departure speeds of data do not match. Available cushioning technologies include: [0003] Double buffering, the way to solve the problem of parallel operation between two peripherals, printers and terminals is to set up double buffering. With two buffers, the CPU can put the data output to the printer into one of the buffers (area) and let the printer print slowly; then, it can read data from another buffer (area) set for the terminal Read the required input data. [0004] Multi-buffering is a buffer structure that connects multiple buffers to form two parts, one part is dedicated to input and the other is dedicated to output. [0005] The buff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/16
Inventor 王娟
Owner ANHUI CHAOHU HAIXING CABLE GROUP CO LTD
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