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System and method for regulating clock signal phase difference

A clock signal, phase difference technology, applied in the field of communication, can solve the problems of low efficiency, high cost, low precision, etc., and achieve the effect of high efficiency, low cost, and improved adjustment accuracy

Inactive Publication Date: 2008-05-14
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0026] The technical problem solved by the present invention is to provide a system and method for adjusting the clock signal phase difference, which is used to solve the problems of low efficiency, low precision and high cost in the process of adjusting the clock signal phase difference in the prior art. The provided system and method also have the characteristics of simple process, wide adjustment range and wide application range

Method used

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  • System and method for regulating clock signal phase difference
  • System and method for regulating clock signal phase difference

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Embodiment Construction

[0053] see image 3 The system 2 for adjusting the phase difference of the clock signal provided by the present invention includes a programmable logic unit (not shown) for delaying the clock signal of the backup board.

[0054] The programmable logic unit includes: a control module 4 and a delay module 6 .

[0055] Wherein, the delay module 6 is used to delay the clock signal of the backup board for a time that needs to be delayed (hereinafter referred to as the delay time S), so as to adjust the clock signal of the backup board to be substantially the same phase as the clock signal of the master board. The delay module 6 includes several delayers (buffers) 7, and a single delayer 7 can delay the clock signal for a fixed time. The delay time of a single delayer 7 is hereinafter referred to as the delay time P.

[0056] The control module 4 is configured to determine the actually used delayer 7, and control the clock signal of the backup board to output after passing through...

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Abstract

A method for adjusting phase difference of clock signal, which contains 1, determining the time delayer in service use, 2, outputting the control backup one board clock signal through delayer, said invention discloses a system for adjusting clock phase difference, which contains programmable logic unit consisting of time delay module composed of several delayers and control module for determining the time delayer in service use, said invention has high accuracy, high efficiency, low cost and wide use range.

Description

technical field [0001] The invention relates to the fields of communication and computer, in particular to a system and method for adjusting the phase difference of clock signals. Background technique [0002] At present, communication systems and computer systems are playing an increasingly important role in people's work and life, and the stability of the system is becoming more and more important. In order to improve the stability of the communication system and computer system, it is necessary to carry out hot backup for some key boards (such as switching boards) in the system, so that when the main board fails, the system data can be immediately switched to the backup board. The backup single board continues to work instead of the main single board, so as to ensure that the entire system continues to operate normally. The main single board refers to a working single board in the system; the backup single board refers to a single board that continues to work instead of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/04H04B1/74
Inventor 费海
Owner HUAWEI TECH CO LTD
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