Parallel frame alignment circuit applied to optical synchronous digital transferring system

A technology of optical synchronous digital transmission system, applied in the field of optical communication, can solve the problems of circuit scale increase, unfavorable system realization, low working speed, etc., and achieve the goal of reducing circuit scale, reducing time delay and improving working speed Effect
CN1564491AInactive Publication Date: 2005-01-12SOUTHEAST UNIV
0 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2005-01-12
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The justification device includes main parts and connections as following: output end of first D trigger is connected to other end of exclusive-or gate. The output end of the exclusive-or gate is connected to input end of second D trigger. Output end of second D trigger is connected to input end of the fourth D trigger and comparator circuit unit respectively. Output end of the comparator circuit unit is connected to counter unit etc. Output end of the third D trigger is connected to 'EN' end of the fourth D trigger. Output end of the fourth D trigger is connected to binary search unit, and 'D63-DO0' of channel selection unit. Binary search unit is connected to channel selection unit through their relevant ends.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a frame alignment device used in a parallel frame synchronization system in a high-speed optical synchronous digital transmission system, which belongs to the technical field of optical communication. Background technique

[0002] In the modern digital multiplexing and tapping system, in order to ensure that the branching at the receiving end is consistent with that at the sending end, a frame synchronization system must be provided to realize the frame synchronization between the sending end and the receiving end. At present, as the data rate level of optical synchronous digital transmission network is getting higher and higher, the processing of SDH (Synchronous Digital Hierarchy, synchronous digital transmission system) data at the receiving end is generally to pass the high-speed serial data stream received through the optical fiber through the serial Parallel processing at a lower rate after convers...

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