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Master/slave switch circuit and method

An active-standby switching and circuit technology, applied in the field of communications, can solve the problems of slow switching speed and switching error tolerance, and achieve the effects of improving reliability, improving switching fault-tolerant design, and improving the system's active-standby switching speed.

Active Publication Date: 2011-09-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] The purpose of the embodiments of the present invention is to provide an active-standby switching circuit and method, which aims to solve the problems of slow switching speed and poor switching error tolerance in the prior art

Method used

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  • Master/slave switch circuit and method
  • Master/slave switch circuit and method
  • Master/slave switch circuit and method

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] see Figure 5 , is a circuit diagram of an active / standby switching circuit according to an embodiment of the present invention. The active-standby switching circuit in the embodiment of the present invention includes an interface circuit, two 244 drivers and a system hardware interface interconnection module. The signals of the interface circuit include: ACT_P, ACT_N signal (output, main / standby indication signal of the unit); Online signal (output, in-position signal of the unit); Work signal (output, working status signal of the unit); FULLIN signal (input, This unit is in-position signal); Mate_ACT_P, Mate_ACT_N signal (input, indicating signal for unit master / standby); Mate_Online signal (input, ...

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Abstract

The rearranging circuit between main and standby includes interface circuit, driver, and interface interconnection module (IIM) of system hardware. The interface circuit through driver is connected to IIM of system hardware. The interface circuit possesses two pins for indicating signals of main and standby. Beneficial effects are: fast rearranging speed, and good rearranging fault tolerance.

Description

technical field [0001] The invention belongs to the communication field, and in particular relates to an active-standby switching circuit and method. Background technique [0002] In order to improve the reliability of the system, the redundancy technology of active backup and hot backup is usually adopted in the system design. Active standby hot backup means that the same two units work at the same time, one is active and the other is standby. The active control signal or bus signal is output by the active unit, and the control signal or bus signal output by the standby unit is invalid or off. When the active unit fails, the system reliably switches to the non-faulty standby unit, which is called active-standby switchover. The active-standby switching design must have two basic functions: comprehensive real-time detection of unit failures to ensure accurate and timely triggering of switching when hardware fails; providing stable and reliable hardware switching to ensure a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K10/00
Inventor 尹相东孙玉芳陈松海黄晓蔚
Owner HUAWEI TECH CO LTD