发明名称 |
Method and apparatus for controlling and/or limiting speed excess by drivers. |
摘要 |
<p>Normally, speed control is carried out by police using radar and camera. The speed of a car can also be recorded in a tachograph. According to the invention car speed is controlled and/or limited using driver-specific smart-cards and millimeter wave communications. When a car (13) enters the sector of a new transmitter (11), its card reader receives a signal telling the reader to consider the time information (t1) received from the transmitter as a starting time. When the car exits this first sector and penetrates the perimeter of a second transmitter (12), the reader receives over the air a second time information (t2) and other information (v1, d1) from which the speed is calculated and recorded within the card reader. The police can check the recorded information by inserting a special card into the reader. <IMAGE></p> |
申请公布号 |
EP0588049(A1) |
申请公布日期 |
1994.03.23 |
申请号 |
EP19930112679 |
申请日期 |
1993.08.07 |
申请人 |
THOMSON CONSUMER ELECTRONICS S.A. |
发明人 |
NACCACHE, DAVID;FREMANTEAU, PATRICE;HARTNACK, WOLFGANG |
分类号 |
G08G1/052;G08G1/042;G08G1/0967;(IPC1-7):G08G1/096 |
主分类号 |
G08G1/052 |
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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