发明名称 |
Sound signaling generation device for pedestrians |
摘要 |
Sound signaling and optical signaling at a crosswalk are both activated by a single push button. An activation of optical signaling such as green and red figurines is immediate, whereas the transmission of a sound message authorizing or forbidding a crossing is activated only when the pedestrian pushes the button for a predetermined time. The generation device for sound signals is controlled by a microprocessor including logic and analog inputs and outputs, the messages being stored in digital form and transmitted according to the ADPCM method.
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申请公布号 |
US5241307(A) |
申请公布日期 |
1993.08.31 |
申请号 |
US19910802324 |
申请日期 |
1991.12.04 |
申请人 |
SOCIETE D'ETUDES ET DE FABRICATION ELECTRONIQUE ET RADIOELECTRIQUE-S.E.F.E.R. |
发明人 |
BIDAULT, GERARD;LEVEQUE, DOMINIQUE |
分类号 |
G08G1/005 |
主分类号 |
G08G1/005 |
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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