Unlock instant, AI-driven research and patent intelligence for your innovation.

Synchronous circuit processing method by master spare low-order pointer

A pointer and frame synchronization technology, applied in electrical components, multiplex communication, time division multiplex system, etc., can solve the problem that low-level pointer processing circuit switching cannot guarantee no error

Inactive Publication Date: 2011-12-14
FENGHUO COMM SCI & TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention solves the problem that in the prior art, the switching of active and standby low-order pointer processing circuits cannot guarantee no error code generation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synchronous circuit processing method by master spare low-order pointer
  • Synchronous circuit processing method by master spare low-order pointer
  • Synchronous circuit processing method by master spare low-order pointer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] In the existing Synchronous Digital Hierarchy System (SDH), the active and standby low-order pointer processing modules are independent of each other. When the external conditions are completely consistent, the power-on time of the active and standby low-order pointer processing modules cannot be guaranteed to be completely consistent. The pointer processing modules do not transmit the control information of the low-order pointer adjustment events to each other, and the pointer adjustment events output by the active and standby low-order pointer processing modules cannot be guaranteed to be completely consistent. When the system needs to switch the low-order pointer processing modules due to failure, the The pointer values ​​sent by the low-level pointer processing module are not necessarily the same, and low-level bit errors may occur.

[0015] This method can prevent the active and standby low-order pointer processing modules from generating low-order code errors when ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The method includes: the low order pointer processing module working at main state makes module multi-frame count; when the multi-frame count value accords with the desired multi-frame count value, the indication of multi-frame count is sent out; the low order pointer processing module at standby state uses the received signal of multi-frame count indication to synchronize the its internal multi-frame count, and then to synchronize the low order read-write address of low order pointer processing module at main state. The invention solves the problem that is there are error codes generated when switch is made between the main low order pointer processing circuit and the standby low order pointer processing circuit.

Description

technical field [0001] The invention relates to a method for synchronizing main and standby low-order pointer processing circuits in a synchronous digital series system, and the method also relates to other systems in which there are main and standby identical functional modules that need to be synchronized. Background technique [0002] In Synchronous Digital Hierarchy (SDH), key functional modules are designed as 1+1 redundant backup, such as high-order cross-connect module, low-order pointer processing module, low-order cross-connect module, etc. Among them, the standby high-order cross-connect module, low-order pointer processing module, and low-order cross-connect module are always in hot standby state. In principle, once one of the main high-order cross-connect modules, low-order pointer processing modules, and low-order cross-connect modules fails, the system should be able to automatically switch to the standby module without error. [0003] For the increasing servi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/06
Inventor 盛朝阳魏明张艳辉钟山黄蕾
Owner FENGHUO COMM SCI & TECH CO LTD