Safety system for protecting movable objects
First Claim
1. A safety system for protecting a vehicle from unauthorized use or removal, comprising:
- a plurality of state indicators for measuring physical quantities, said state indicators emitting code signals to identify themselves;
a plurality of state transducers for controlling physical quantities, said state transducers emitting code signals to identify themselves;
a bi-directional, common information transmission channel to which said state indicators and said state transducers are connected;
an integrated surveillance unit including;
a function unit absolutely essential to the function of the vehicle, said function unit being inseparable from said integrated surveillance unit without destruction of said function unit; and
a primary control unit which controls at least said function unit, said primary control unit including means for storing information on the correct form of the code signals of a first predetermined number of said state indicators and said state transducers and for comparing the code signals received from said state indicators and said state transducers over said channel with the stored information, said primary control unit bring connected with and receiving the code signals form said plurality of state indicators and said plurality of state transducers via said common information transmission channel, said primary control unit blocking the function of said function unit when said primary control unit does not receive the code signals in the correct form for all of said first predetermined number of said state indicators and said state transducers; and
wherein said state indicators and said state transducers are distributed in a substantially random manner over the entire vehicle and wherein at least one of said indicators and said state transducers includes a secondary control unit for storing information on the correct form of the code signals of a second predetermined number of the other of said state indicators and said state transducers and said primary control unit and for comparing the code signals received from said second predetermined number of the other of said state indicators and said state transducers and said primary control unit over said channel with the stored information, said at least one of said state indicators and said state transducers performing its intended function only when the code signals received from the other of said state indicators and said state transducers and said primary control unit are in the correct form for all of said second predetermined number of the other of said state indicators and said state transducers.
1 Assignment
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Accused Products
Abstract
A safety system for protecting movable objects such as alarm systems of motor vehicles, although the same basic ideas can be applied for example to cases, computers and the like, which are to be protected from an unauthorized use or removal. Particularly, the safety system for the vehicle comprising state indicators may for door contacts, oil pressure pick ups, temperature pick ups and the like; and state transducers may for control lighting means, starter, and the like. Both the state indicators and state transducers are continuously emitting code signals to identify themselves to the primary control unit and second control unit via the common information transmission channel. The primary control unit for storing information on the correct form of the code signals of a first predetermined number of the other state indicators and state transducers, while the second control unit for storing information on the correct form of the code signals of a second predetermined number of the other state indicators and state transducers, wherein at least one of state indicators and state transducers perform its intended function only when the code signals received from the other state indicators and state transducers and the primary control unit is in the correct form.
17 Citations
21 Claims
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1. A safety system for protecting a vehicle from unauthorized use or removal, comprising:
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a plurality of state indicators for measuring physical quantities, said state indicators emitting code signals to identify themselves; a plurality of state transducers for controlling physical quantities, said state transducers emitting code signals to identify themselves; a bi-directional, common information transmission channel to which said state indicators and said state transducers are connected; an integrated surveillance unit including; a function unit absolutely essential to the function of the vehicle, said function unit being inseparable from said integrated surveillance unit without destruction of said function unit; and a primary control unit which controls at least said function unit, said primary control unit including means for storing information on the correct form of the code signals of a first predetermined number of said state indicators and said state transducers and for comparing the code signals received from said state indicators and said state transducers over said channel with the stored information, said primary control unit bring connected with and receiving the code signals form said plurality of state indicators and said plurality of state transducers via said common information transmission channel, said primary control unit blocking the function of said function unit when said primary control unit does not receive the code signals in the correct form for all of said first predetermined number of said state indicators and said state transducers; and wherein said state indicators and said state transducers are distributed in a substantially random manner over the entire vehicle and wherein at least one of said indicators and said state transducers includes a secondary control unit for storing information on the correct form of the code signals of a second predetermined number of the other of said state indicators and said state transducers and said primary control unit and for comparing the code signals received from said second predetermined number of the other of said state indicators and said state transducers and said primary control unit over said channel with the stored information, said at least one of said state indicators and said state transducers performing its intended function only when the code signals received from the other of said state indicators and said state transducers and said primary control unit are in the correct form for all of said second predetermined number of the other of said state indicators and said state transducers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification