Monitoring apparatus for electronic key and displaying apparatus for positional information on electronic key
First Claim
1. A monitoring apparatus for an electronic key, comprising:
- an immobilizer mounted on a movable body;
a GPS navigation unit mounted on the movable body;
monitoring means for continuously detecting communication status between an electronic key and the immobilizer, which communication deactivates a function of the immobilizer;
means for informing the GPS navigation unit of the detected communication status by sending a signal Sw to the GPS navigation unit when the communication from the electronic key has stopped;
means for storing and displaying a stored location of the electronic key at a time when the communication has stopped as positional information of the electronic key on a display panel of the GPS navigation unit without an action by an operator of the monitoring apparatus; and
means for calling the stored location of the electronic key and inputting the stored location to the means for displaying the stored location on the display panel at any of a plurality of times after the time when the communication has stopped.
1 Assignment
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Accused Products
Abstract
A control unit having an immobilizer function includes a circuit for transmitting a request signal within a predetermined range. After receiving a reply signal from an electronic key in response to this request signal once and allowing a movable body to move, when a reply signal to the periodically sent request signal is not received, it is determined that the electronic key is out of the range, and it is assumed that the key has been dropped. A monitor section outputs a warning signal and transmits the warning signal to the navigation unit. A navigation unit, in response to the warning signal, stores the location at that time as the positional information on the electronic key. The navigation unit also displays a map showing the location of a key based on positional information on the electronic key. With this system, a lost electronic key may be readily located.
20 Citations
20 Claims
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1. A monitoring apparatus for an electronic key, comprising:
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an immobilizer mounted on a movable body; a GPS navigation unit mounted on the movable body; monitoring means for continuously detecting communication status between an electronic key and the immobilizer, which communication deactivates a function of the immobilizer; means for informing the GPS navigation unit of the detected communication status by sending a signal Sw to the GPS navigation unit when the communication from the electronic key has stopped; means for storing and displaying a stored location of the electronic key at a time when the communication has stopped as positional information of the electronic key on a display panel of the GPS navigation unit without an action by an operator of the monitoring apparatus; and means for calling the stored location of the electronic key and inputting the stored location to the means for displaying the stored location on the display panel at any of a plurality of times after the time when the communication has stopped. - View Dependent Claims (2, 3, 15, 16)
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4. A displaying apparatus for positional information of an electronic key, comprising:
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an immobilizer mounted on a movable body; a control unit for continuously detecting communication status between the electronic key and the immobilizer; a GPS navigation unit mounted on the movable body and being capable of determining the positional information of the electronic key upon receipt of a signal Sw from the control unit when the communication from the electronic key has stopped; display control means for displaying the positional information of the electronic key at a time when the communication between the electronic key and the immobilizer is stopped, on a display panel of the GPS navigation unit as the positional information of the electronic key without an action by an operator of the displaying apparatus, and means for calling the stored location of the electronic key and inputting the stored location to the means for displaying the stored location on the display panel at any of a plurality of times after the time when the communication has stopped, wherein when the communication is stopped, the immobilizer is deactivated. - View Dependent Claims (5, 6, 7, 17, 18)
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8. A displaying apparatus for positional information of an electronic key, comprising:
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a control unit mounted on a movable body, which includes an immobilizer allowing a driving source of the movable body to be started via communication with an electronic key; a navigation unit mounted on the movable body, which navigates and guides the movable body using a GPS electric wave; a transmitting section provided in the control unit, which transmits a request signal within a predetermined range; a receiving section provided in the control unit, which receives a reply signal transmitted by the electronic key in response to the request signal; means for storing a location of the movable body at a time when the receiving section fails to receive the reply signal in response to the request signal transmitted after the driving source is started; and means for sending a signal Sw to the navigation unit when the receiving section fails to receive the reply signal; means for displaying the stored location of the electronic key as the positional information of the electronic key on a display panel of the navigation unit without an action by an operator of the displaying apparatus, and means for calling the stored location of the electronic key and inputting the stored location to the means for displaying the stored location on the display panel at any of a plurality of times after the time when the communication has stopped. - View Dependent Claims (9, 10, 11, 12, 13, 14, 19, 20)
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Specification