Method and arrangement for arranging, selecting and displaying location data in a cellular telephone system, and a terminal of a cellular network
First Claim
1. A method for displaying on a cellular terminal map data from a map data bank connected with a cellular network, which method comprises a step in which map data retrieval from a map data bank is started at the terminal, a step in which the map data are transferred to the terminal, steps in which the map presentation on the terminal'"'"'s display is enhanced, and a step in which the map data are shown on the terminal'"'"'s display, wherein the map data contained in the map data bank are arranged in hierarchic map levels to be enhanced in a stepwise manner so that when a map retrieval is started, a map of the coarsest hierarchic level is fetched to the terminal and the fetched map is divided on the display of the terminal into at least two equal-sized sections one of which can be selected by means of the terminal for a more detailed map data retrieval and presentation.
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Accused Products
Abstract
The invention relates to a method and arrangement for using location data in a cellular network. The cellular network includes a centralized map data bank (454) in which the map data are arranged in accordance with the quadtree hierarchy. The terminal includes a presentation means (23) for displaying map data according to the quadtree hierarchy. Some of the terminal'"'"'s function keys (29) are arranged so as to function as selection keys for fetching more detailed map screens of the quadtree hierarchy to the display. The map data and possible auxiliary data fetched from the map data bank are saved in the terminal'"'"'s memory for later use.
25 Citations
23 Claims
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1. A method for displaying on a cellular terminal map data from a map data bank connected with a cellular network, which method comprises
a step in which map data retrieval from a map data bank is started at the terminal, a step in which the map data are transferred to the terminal, steps in which the map presentation on the terminal'"'"'s display is enhanced, and a step in which the map data are shown on the terminal'"'"'s display, wherein the map data contained in the map data bank are arranged in hierarchic map levels to be enhanced in a stepwise manner so that when a map retrieval is started, a map of the coarsest hierarchic level is fetched to the terminal and the fetched map is divided on the display of the terminal into at least two equal-sized sections one of which can be selected by means of the terminal for a more detailed map data retrieval and presentation.
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11. A location data arrangement in a cellular telephone system, comprising:
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a map data bank connected with a cellular network, wherein map data in the map data bank are arranged in hierarchic map levels that become more detailed step by step, a public cellular network, a cellular terminal the display of which is arranged to be used as a map display, and a means at the terminal to determine the geographical position of the terminal. - View Dependent Claims (12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23)
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16. A cellular terminal comprising:
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a means for receiving map data from base stations, a means for saving into its memory map data, which is retrieved from a hierarchically arranged map data bank, a means for displaying retrieved map data, a means for inputting data to the terminal, a means for sending messages and a means for determining the geographical position of the terminal.
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Specification