US 2004/0164860 A1Published application

Digital alerting security unit

AssigneeWireless Tec

InventorDiaa Hosny

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Abstract

A digital alerting security system and a method to signal audio and/or visual alarms and to communicate alerts through automatic telephone dialer or electronic messaging that a person has forgotten or separated a pre-set, specified distance from a valuable item/object/animal is disclosed. The system also acts as a smart tag to secure that travelers are accompanying their checked luggage/objects on board and to quickly identify luggage that does not belong to identified travelers on board and/or to facilitate their luggage retrieving afterwards by signaling and communicating alerts. The system comprises an integral ultrasonic transmitter and alerting unit, which is attached or integrated to the item/luggage/object/animal, with modulating and digital coding means and a portable integrated receiver/reminder/alerting unit, which is held by the person, with demodulation and digital decoding means. Each of these units can be energized with the aid a single pole one way switch and a power supply mean. The receiver/reminder/alerting unit can automatically reset itself when the item/object/luggage/animal is located.

A new apparatus and a new methodology for giving alerting facility (audio and/or visual) as a reminder to a person that he/she has forgotten some object/item/animal behind anywhere and/or to secure that traveller is accompanying his checked luggage/objects and to quickly identify luggage that does not belong to travellers on board, comprising a transmitter unit, which is attached or clipped to the object/item/animal and a portable integrated receiver/reminder unit, which is held or clipped to the clothes of the person,

Said transmitter unit including:
Power supply and on/off power switching means;
line driver means to generate an n-bit unique encoded digital signal in order to enable unique activation and alerting in a field with numerous amounts of similar apparatuses;
frequency shift keying means which modulates the encoded signal such that a logic one in the said signal is represented by an audio signal at a specified frequency and a logic zero is represented by an audio signal at a different frequency;
frequency modulation means where a carrier signal frequency is modulated by the frequency shift keying modulated encoded digital signal;
amplifying means to amplify the said signal prior to feeding it to the said frequency modulation means;
a signal transmission means for transmission of the amplified modulated signal from the said frequency modulation means in the form of pressure sound waves;
Said integrated receiver/reminder unit including:
Power supply and on/off power switching means;
signal receiving means for receiving the transmitted signal said transmitter unit;
frequency demodulation means to demodulate the said transmitted signal;
amplifying means which amplifies the demodulated signal outputted from the said frequency demodulation means;
frequency shift keying demodulation means to demodulate the output signal from the said amplifying means;
decoder means to decode the output signal from the said frequency shift keying demodulation means;
reminder means which enabled from the said decoder means in order to generate an audio message or visual display when the object/item/animal to which the said transmitter unit is attached is away from the said integrated receiver/reminder unit within a certain specified short range.

12 more elements

Abstract

Claims19