发明名称 |
Parallel variable bit encoder |
摘要 |
A data segmentation circuit is disclosed for use in DS3/STS-1 mapping. The data segmentation circuit uses a circular data buffer to store data for mapping. A recirculating barrel shifter is used for extracting data from within the buffer. A counter moves the barrel shifter window zero, one, five, or eight bits to align the barrel shifter output as necessary to extract a next datum for a next payload envelope location. Data stuffing is then performed. Control circuitry for providing throttling and bit stuffiing as required in an STS-1 information payload is disclosed.
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申请公布号 |
US5973628(A) |
申请公布日期 |
1999.10.26 |
申请号 |
US19970943527 |
申请日期 |
1997.10.03 |
申请人 |
CISCO TECHNOLOGY, INC. |
发明人 |
MCDONNELL, MICHAEL;SALEMI, HOJJAT |
分类号 |
H03M9/00;H04J3/07;H04Q11/04;(IPC1-7):H03M7/40 |
主分类号 |
H03M9/00 |
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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