Security installation for motor vehicles
First Claim
1. A security installation for motor vehicles, comprising stationary transponder means installed at the motor vehicle for producing a coded interrogating signal, a portable transponder means for receiving the coded interrogating signal and for transmitting a coded response signal, comparator means in the motor vehicle which upon matching of the coded response signal with an expected coded signal produces an unlocking signal to an unlocking means, and manually actuatable switch means arranged at the motor vehicle for initiating a switching signal for causing said stationary transponder means to produce said coded interrogatory signal, said manually actuatable switch means being connected with a manually operable actuating means provided for the use of the motor vehicle.
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Accused Products
Abstract
In a security installation for motor vehicles with a stationary transponder installed at the motor vehicle for producing a coded interrogating signal, with a portable transponder for receiving the coded interrogating signal and for transmitting a coded response signal and with a coded signal comparator which in case of matching of the coded response signal with an expected coded signal produces an unlocking signal, the switching signal is produced with the aid of a manually actuatable switch arranged at the motor vehicle which is connected with an actuating member provided already for the use of the motor vehicle.
67 Citations
8 Claims
- 1. A security installation for motor vehicles, comprising stationary transponder means installed at the motor vehicle for producing a coded interrogating signal, a portable transponder means for receiving the coded interrogating signal and for transmitting a coded response signal, comparator means in the motor vehicle which upon matching of the coded response signal with an expected coded signal produces an unlocking signal to an unlocking means, and manually actuatable switch means arranged at the motor vehicle for initiating a switching signal for causing said stationary transponder means to produce said coded interrogatory signal, said manually actuatable switch means being connected with a manually operable actuating means provided for the use of the motor vehicle.
Specification