发明名称 |
ASYNCHRONOUS INTERNALLY CLOCKED SEQUENTIAL DIGITAL WORD DETECTOR |
摘要 |
A detector for detecting predetermined digital words within a train of signals wherein the digits in the words each have a predetermined time period. The detector continuously samples the train of signals coupled thereto. Samplings are taken a number of times during the interval of a digit time period, and a digital signal corresponding to the sampled signal for each sample taken is stored in a multi-stage storage register. Comparison circuitry compares the digital signals in the storage register with a first predetermined word in a memory circuit. If there is a correlation, the comparison circuit counts for a time period long enough to sample the train of signals and store a new series of signals corresponding to a second digital word. The comparison circuit compares these second digital signals with a second word in the memory circuit. A correlation between theset two words produces a detection signal. |
申请公布号 |
CA1019446(A) |
申请公布日期 |
1977.10.18 |
申请号 |
CA19740196610 |
申请日期 |
1974.04.02 |
申请人 |
MOTOROLA, INC. |
发明人 |
BRAUN, WILLIAM V.;BRUCKERT, EUGENE J.;GIACOMINO, GERALD L.;PARTIPILO, PHILLIP |
分类号 |
H04B1/06;G06F17/15;H04L13/18;H04L17/16;H04W88/02 |
主分类号 |
H04B1/06 |
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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