发明名称 |
Signal acquisition detection method |
摘要 |
A method of detecting whether a valid DS1 signal is being received by a receiver. If the receiver does not have a valid signal (loss of signal), then the receiver reads consecutive fixed sized N bit blocks of the received digital signal. Each of the blocks or windows is checked for minimum 1s density. Received consecutive 0s are counted and checked against a maximum. If two sequential blocks of bits satisfy the 1s and consecutive 0s tests, then the received signal is judged valid and an acquisition of signal flag is asserted.
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申请公布号 |
US5400361(A) |
申请公布日期 |
1995.03.21 |
申请号 |
US19930083154 |
申请日期 |
1993.06.25 |
申请人 |
AT&T CORP. |
发明人 |
BRAUNS, GREGORY T.;RAMACHANDRAN, RAMASUBRAMANIAM |
分类号 |
H04L1/24;(IPC1-7):H04B3/46;H04B17/00;H04Q1/20 |
主分类号 |
H04L1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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