Navigation apparatus, route guide method and program
First Claim
1. A navigation apparatus comprising:
- a display control unit which displays a navigation screen on a display device;
a display state determining unit which determines whether a state is a display state in which the navigation screen is displayed or a no-display state in which the navigation screen is not displayed; and
a route guide unit which searches a route to a destination and executes a route guide in accordance with a guide route obtained by searching,wherein, in the display state, the route guide unit determines the guide route and executes the route guide with a guide sound and a guide display on a display screen according to a normal mode, andwherein, in the no-display state, the route guide unit determines the guide route so that the determined route includes fewer right and left turns than in the normal mode and executes the route guide only with the guide sound according to a no-display mode.
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Accused Products
Abstract
A navigation device provides route guidance only by voice guidance even if route guidance by a display screen is impossible. A navigation device displays on a display device a navigation screen including a map about a current position. The display device can enter a no-display state. In the navigation device, regardless of the state of the navigation screen, a route guidance method is performed. More particularly, in the display state, a guidance route is determined by a normal mode and route guidance is performed by both voice and display. In the no-display state, a guidance route including fewer movement methods is determined and route guidance is made only by voice guidance. Thus, in the no-display state where the navigation screen is not displayed, a guidance route is determined so as to enable route guidance only by voice.
8 Citations
10 Claims
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1. A navigation apparatus comprising:
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a display control unit which displays a navigation screen on a display device; a display state determining unit which determines whether a state is a display state in which the navigation screen is displayed or a no-display state in which the navigation screen is not displayed; and a route guide unit which searches a route to a destination and executes a route guide in accordance with a guide route obtained by searching, wherein, in the display state, the route guide unit determines the guide route and executes the route guide with a guide sound and a guide display on a display screen according to a normal mode, and wherein, in the no-display state, the route guide unit determines the guide route so that the determined route includes fewer right and left turns than in the normal mode and executes the route guide only with the guide sound according to a no-display mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A route guide method comprising:
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displaying a navigation screen on a display device; determining whether a state is a display state in which the navigation screen is displayed or a no-display state in which the navigation screen is not displayed; and searching a route to a destination and executes a route guide in accordance with a guide route obtained by searching, wherein, in the display state, the searching step executes route search and executes the route guide with a display screen and a guide sound in accordance with an obtained guide route according to a normal mode, and wherein, in the no-display state, the searching step executes the route search so that the searched route includes fewer right and left turns than in the normal mode and executes the route guide only with the guide sound in accordance with the obtained guide route according to a no-display mode.
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9. A computer program product in a non-transitory computer-readable medium upon execution in a navigation apparatus performs the steps of:
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displaying navigation screen on a display device; determining whether a state is a display state in which the navigation screen is displayed or a no-display state in which the navigation screen is not displayed; and searching a route to a destination and executes a route guide in accordance with the guide route obtained by searching, wherein, in the display state, the searching step executes route search and executes the route guide with a display screen and a guide sound in accordance with an obtained guide route according to a normal mode, and wherein, in the no-display state, the searching step executes the route search so that the searched route includes fewer right and left turns than in the normal mode and executes the route guide only with the guide sound in accordance with the obtained guide route according to a no-display mode.
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10. A non-transitory computer-readable medium which records a computer program upon execution in a navigation apparatus performs the steps of:
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displaying a navigation screen on a display device; determining whether a state is a display state in which the navigation screen is displayed or a no-display state in which the navigation screen is not displayed; and searching a route to a destination and executing a route guide in accordance with the guide route obtained by searching, wherein, in the display state, the searching step executes route search and executes the route guide with a display screen and a guide sound in accordance with an obtained guide route according to a normal mode, and wherein, in the no-display state, the searching step executes the route search so that the searched route includes fewer right and left turns than in the normal mode and executes the route guide only with the guide sound in accordance with the obtained guide route according to a no-display mode.
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Specification