发明名称 |
LOCAL CONTROLLER FOR TRAFFIC CONTROL SYSTEM |
摘要 |
A local controller for use in a traffic control system is provided with all solid-state means for displacing the local traffic cycle relative to a master traffic cycle and for effecting the smooth transition between alternate displacements. The traffic cycle length is determined by measuring the period between the phase coincidence of two signals having a slight difference in frequency.
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申请公布号 |
US3641486(A) |
申请公布日期 |
1972.02.08 |
申请号 |
USD3641486 |
申请日期 |
1969.06.23 |
申请人 |
LFE CORP. |
发明人 |
PETER C. BROCKETT;LUDWIG R. PALLAT |
分类号 |
G08G1/082;(IPC1-7):G08G1/07 |
主分类号 |
G08G1/082 |
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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