Communication type map display device
First Claim
1. A communication type map display apparatus, comprising:
- an inputting unit for inputting an instruction;
a map data obtaining unit for communicating with a device exterior thereto to obtain map data;
a storage unit for storing said map data obtained by said map data obtaining unit;
an area screen data generating unit for generating area screen data to be used to confirm an area to be indicated based on said map data stored in said storage unit;
a map screen data generating unit for generating map screen data indicative of a map based on said map data stored in said storage unit; and
a display unit for displaying at least one of screens including an area screen based on said area screen data and a map screen based on said map screen data, and in which said area screen data generating unit is operative to generate said area screen data in such a manner that an area of a map corresponding to said map data to be obtained by said map data obtaining unit and an area corresponding to said map data stored in said storage unit are recognized as being distinct from each other in said area screen under the condition that said instruction inputted by said inputting unit requests to obtain said map data.
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Accused Products
Abstract
A communication type map display apparatus according to the present invention comprises: an inputting unit (11) for inputting an instruction in response to an input operation; a map data obtaining unit (12) for communicating with external devices (3a to 3n) exterior thereto to obtain map data; a control unit (15) for controlling the map data obtaining unit (12) in response to an input signal, obtaining the map data from the external devices, and subjecting the map data to image processing so as to generate image data on a map screen or an area screen, a storage unit (13) for storing the map data obtained by the map data obtaining unit (12), management data of the map data, and the like; and a display unit (14) for displaying an image based on the image data generated by the control unit (15). The communication type map display apparatus thus constructed can display an area of the map data stored therein or the map data to be obtained before obtaining the map data by means of communication.
20 Citations
16 Claims
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1. A communication type map display apparatus, comprising:
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an inputting unit for inputting an instruction;
a map data obtaining unit for communicating with a device exterior thereto to obtain map data;
a storage unit for storing said map data obtained by said map data obtaining unit;
an area screen data generating unit for generating area screen data to be used to confirm an area to be indicated based on said map data stored in said storage unit;
a map screen data generating unit for generating map screen data indicative of a map based on said map data stored in said storage unit; and
a display unit for displaying at least one of screens including an area screen based on said area screen data and a map screen based on said map screen data, and in which said area screen data generating unit is operative to generate said area screen data in such a manner that an area of a map corresponding to said map data to be obtained by said map data obtaining unit and an area corresponding to said map data stored in said storage unit are recognized as being distinct from each other in said area screen under the condition that said instruction inputted by said inputting unit requests to obtain said map data. - View Dependent Claims (4, 5, 6, 7, 8, 9, 16)
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2. A communication type map display apparatus, comprising;
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an inputting unit for inputting an instruction;
a map data obtaining unit for communicating with a device exterior thereto to obtain map data;
a storage unit for storing said map data obtained by said map data obtaining unit;
an available storage capacity judging unit for judging whether or not there is an available storage capacity in said storage unit for storing said map data to be obtained by said map data obtaining unit;
a deletion data deciding unit for deciding map data to be deleted from said storage unit in the case that said available storage capacity judging unit judges that there is no available storage capacity for storing said map data to be obtained by said map data obtaining unit;
an area screen data generating unit for generating area screen data to be used to confirm an area to be indicated based on said map data stored in said storage unit;
a map screen data generating unit for generating map screen data indicative of a map based on said map data stored in said storage unit; and
a display unit for displaying at least one of screens including an area screen based on said area screen data and a map screen based on said map screen data, and in which said area screen data generating unit is operative to generate said area screen data in such a manner that an area corresponding to said map data decided to be deleted by said deletion data deciding unit from said storage unit and an area corresponding to said map data stored in said storage unit are recognized as being distinct from each other in said area screen under the condition that said instruction inputted by said inputting unit requests to obtain said map data. - View Dependent Claims (3)
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10. A communication type map display apparatus, comprising:
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an inputting unit for inputting an instruction;
a map data obtaining unit for communicating with a device exterior thereto to obtain map data;
a storage unit for storing said map data obtained by said map data obtaining unit;
a deletion order deciding unit for deciding an order of map data to be deleted from said storage unit in the case that there is no available storage capacity for storing said map data to be obtained by said map data obtaining unit;
an area screen data generating unit for generating area screen data to be used to confirm an area to be indicated based on said map data stored in said storage unit;
a map screen data generating unit for generating map screen data indicative of a map based on said map data stored in said storage unit; and
a display unit for displaying at least one of screens including an area screen based on said area screen data and a map screen based on said map screen data, and in which said area screen data generating unit is operative to generate said area screen data in such a manner that said order of map data to be deleted decided by said deletion order deciding unit is recognized as being distinct in said area screen under the condition that said instruction inputted by said inputting unit requests to switch said screen displayed by said map screen from said map screen to said area screen. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification