Mobile security system
First Claim
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1. In a motorized vehicle having an electric energy supply means, a starter circuit and an ignition circuit, the improvement comprising:
- a cellular telephone which produces DTMF tones generated for dialing in the land-based telephone network;
a control circuit activated by closing of either the starter circuit or the ignition circuit electrically connected by wire to the speaker of the telephone having circuitry for monitoring the DTMF tones generated by the telephone and for decoding previously stored DTMF tones for opening and closing a circuit;
means for selecting the circuit to be controlled by the control circuit; and
an alarm circuit activated by closing of either the starter circuit or the ignition circuit electrically connected by wire to the telephone and to the control circuit for activating an alarm upon entry of an incorrect code or severing or removal of the telephone.
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Abstract
An apparatus is provided for preventing unauthorized operation of an engine of a motorized vehicle having a cellular telephone whereby certain DTMF tones must be generated on the cellular telephone prior to the engine of a motor vehicle being operational.
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Citations
2 Claims
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1. In a motorized vehicle having an electric energy supply means, a starter circuit and an ignition circuit, the improvement comprising:
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a cellular telephone which produces DTMF tones generated for dialing in the land-based telephone network; a control circuit activated by closing of either the starter circuit or the ignition circuit electrically connected by wire to the speaker of the telephone having circuitry for monitoring the DTMF tones generated by the telephone and for decoding previously stored DTMF tones for opening and closing a circuit; means for selecting the circuit to be controlled by the control circuit; and an alarm circuit activated by closing of either the starter circuit or the ignition circuit electrically connected by wire to the telephone and to the control circuit for activating an alarm upon entry of an incorrect code or severing or removal of the telephone. - View Dependent Claims (2)
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Specification
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Current AssigneeStewart Settles, Warren J. Henneberry
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Original AssigneeStewart Settles, Warren J. Henneberry
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InventorsHenneberry, Warren J., Settles, Stewart
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Primary Examiner(s)Gaffin, Jeffrey A.
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Application NumberUS07/720,712Time in Patent Office742 DaysField of Search307/9.1, 307/10.1, 307/10.2, 307/10.3, 307/10.5, 307/10.6, 340/426, 379/37, 379/58, 379/59, 379/61, 379/62US Class Current307/10.2CPC Class CodesB60R 25/04 operating on the propulsion...B60R 25/1003 Alarm systems characterised...B60R 25/23 using manual input of alpha...
