In-vehicle emergency call unit and in-vehicle emergency call system
First Claim
1. An in-vehicle emergency call unit comprising:
- position information receiving means that receives position information from a navigation system; and
control means that causes the position information acquired from the navigation system by the position information receiving means to be saved in position information saving means and, when a starting trigger of an emergency call occurs, causes an emergency call signal including the position information saved in the position information saving means to be transmitted from transmitting means to a service center for the purpose of an emergency call,wherein the in-vehicle emergency call unit includes positioning means that acquires position information by positioning,wherein when the position information receiving means has moved from a state where it is able to acquire the position information from the navigation system to a state where it is unable to acquire the position information from the navigation system while the navigation system is running, from then on the control means causes the position information acquired by the positioning means to be saved in the position information saving means,wherein when the position information receiving means has returned from a state where it is unable to acquire the position information from the navigation system to a state where it is able to acquire the position information from the navigation system while the navigation system is running, from then on the control means causes the position information acquired from the navigation system by the position information receiving means to be saved in the position information saving means, andwherein when the position information receiving means has returned from a state where it is unable to acquire the position information from the navigation system to a state where it is able to acquire the position information from the navigation system while the navigation system is running, from then on the control means causes the position information acquired from the navigation system by the position information receiving means to be saved in the position information saving means.
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Accused Products
Abstract
In accordance with the present disclosure, newly acquired position is transmitted to a service center to accurately provide a vehicle position when a starting trigger of an emergency call occurs even in a situation where position information is unobtainable from a navigation system. When a problem occurs in a navigation system or a communication line while the navigation system is running, and an in-vehicle emergency call unit becomes unable to receive position information from the navigation system, the in-vehicle emergency call unit saves position information that a positioning unit has acquired by autonomous positioning instead of position information received from and acquired by the navigation system. The in-vehicle emergency call unit then transmits to a service center the saved position information when a starting trigger occurs.
6 Citations
18 Claims
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1. An in-vehicle emergency call unit comprising:
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position information receiving means that receives position information from a navigation system; and control means that causes the position information acquired from the navigation system by the position information receiving means to be saved in position information saving means and, when a starting trigger of an emergency call occurs, causes an emergency call signal including the position information saved in the position information saving means to be transmitted from transmitting means to a service center for the purpose of an emergency call, wherein the in-vehicle emergency call unit includes positioning means that acquires position information by positioning, wherein when the position information receiving means has moved from a state where it is able to acquire the position information from the navigation system to a state where it is unable to acquire the position information from the navigation system while the navigation system is running, from then on the control means causes the position information acquired by the positioning means to be saved in the position information saving means, wherein when the position information receiving means has returned from a state where it is unable to acquire the position information from the navigation system to a state where it is able to acquire the position information from the navigation system while the navigation system is running, from then on the control means causes the position information acquired from the navigation system by the position information receiving means to be saved in the position information saving means, and wherein when the position information receiving means has returned from a state where it is unable to acquire the position information from the navigation system to a state where it is able to acquire the position information from the navigation system while the navigation system is running, from then on the control means causes the position information acquired from the navigation system by the position information receiving means to be saved in the position information saving means. - View Dependent Claims (2, 3, 4, 5)
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6. An in-vehicle emergency call unit comprising:
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A network interface configured to receive first position information acquired by a navigation system; storage device coupled to the network interface the storage device configured to save information as saved information; wireless communication unit coupled to the network interface and the storage device; control unit coupled to the wireless communication unit, the network interface and the storage device, the control unit including a processor, the processor configured to; cause the first position information to be saved in the storage device as the saved information while the navigation system is running and the network interface is receiving the first position information; and cause an emergency signal including the saved information to be transmitted from the wireless communication unit to a service center when a starting trigger occurs; and positioning unit configured to acquire second position information by performing a positioning operation independent of the navigation system, wherein, when the network interface moves from a first state of receiving the first position information while the navigation system is running to a second state of being unable to receive the first position information while the navigation system is running, the control unit causes the second position information to be saved in the storage device as the saved information, and wherein, when the network interface returns from the second state to the first state while the navigation system is running, the control unit causes the first position information acquired by the navigation system and received by the network interface to be saved in the storage device as the saved information. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method for providing positioning information with an in-vehicle emergency call, the position information for locating a vehicle, the method comprising:
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determining whether first position information has been received in an in-vehicle unit on a first end of a communication channel from an navigation system having an in-vehicle unit located on a second end of a communication channel, enabling an autonomous acquisition of second position information by a positioning unit different from the navigation system if it is determined that the first position information has not been received from the navigation system, autonomously acquiring second position information using the positioning unit, the positioning unit located in the vehicle on a different side of the communication channel from the navigation system, disabling the autonomous acquiring of second position information from the positioning unit if the first position information has been received from the navigation system. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification