Navigation Device Automatic Arrival Notification
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Solution Overview
Problem
Conventional navigation devices connected to portable telephones cannot communicate estimated time of arrival to another portable telephone not connected to a navigation device, requiring manual operation to notify delays or arrival times.
Innovation Solution
A navigation device with a display section, position detection, and communication interface that calculates estimated arrival time and automatically instructs a connected portable device to create and transmit a mail with this information, including current position and nearby facility details, without driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable telephone is connected to a navigation device, then communication between navigation devices is enabled, but the portable telephone cannot communicate with another portable telephone not connected to a navigation device
Solution Approach 1:
The navigation device automatically creates and transmits mail messages containing estimated time of arrival information without requiring the driver to manually operate the portable telephone. The system performs the communication task autonomously, allowing the portable telephone to serve itself in transmitting navigation data to external recipients.
2Loss of information
If the driver operates the portable telephone to notify arrival information, then communication with the other party is achieved, but the driver's attention is diverted from driving
Solution Approach 1:
The navigation device autonomously handles the transmission of arrival information by automatically creating and sending mail messages through the portable telephone interface, eliminating the need for driver intervention and preventing distraction from driving tasks.
Solution Approach 2:
The system calculates the estimated time of arrival in advance and prepares the mail message with this information before the actual arrival, so that the notification can be sent automatically without requiring last-minute driver action.
3Extent of automation
If automatic mail transmission is implemented, then driver operation is eliminated, but system complexity increases
Solution Approach 1:
The portable telephone serves multiple functions: it acts as both a communication device for the driver and an automatic mail transmission device for the navigation system. By leveraging the existing communication capabilities of the portable telephone, the system achieves automatic mail transmission without adding dedicated hardware, thus limiting the increase in system complexity.
Data Source
AI summary
A navigation device (100) has a position detection section (7), an interface (4), a touch panel (62), and a computer (1). The computer (1) has timekeeper means for clocking a current time, estimated arrival time calculation means for calculating the estimated time of arrival at a destination by using the touch panel (62), mail creation instruction means for causing, through the interface, (4) a portable telephone (200) to create mail containing text that informs arrival at the calculated estimated time of arrival, and mail transmission instruction means for causing the portable telephone (200) to transmit the created mail. The estimated time of arrival is transmitted to the other party without operation of a portable telephone by a driver.