# US 2010/0169012 A1 · Map data display control apparatus, map data display control method, and program for the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0169012 A1 - Document ID: US20100169012A1 - Status: Published application - Kind: A1 - Application number: 12/628,368 - Filed: 2009-12-01 - Published: 2010-07-01 - Earliest claimed: 2008-12-25 - Assignees: Sony Corporation - Inventors: Masanao TSUTSUI - Web page: https://patentgrep.com/patent/US20100169012A1 ## CPC - G01C 21/20: Instruments for performing navigational calculations (G01C21/24, G01C21/26 take precedence) - G01C 21/26: specially adapted for navigation in a road network - G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S) ## Abstract A map data display control apparatus includes: a position information acquiring section acquiring position information; a latitude determining section determining whether a latitude identified by the acquired position information is in the excess of a predetermined latitude threshold or not; a display range calculating section calculating a display range for displaying a map with reference to a position identified by the acquired position information based on the result of the determination made by the latitude determining section; and a rendering section rendering a map associated with the reference position based on the calculated display range. ## Claims ### Claim 1 A map data display control apparatus comprising: a position information acquiring section acquiring position information; a latitude determining section determining whether a latitude identified by the acquired position information is in the excess of a predetermined latitude threshold or not; a display range calculating section calculating a display range for displaying a map with reference to a position identified by the acquired position information based on the result of the determination made by the latitude determining section; and a rendering section rendering a map associated with the reference position based on the calculated display range. ### Claim 2 (depends on 1) A map data display control apparatus according to claim 1, wherein the display range calculating section calculates the display range based on the latitude identified by the acquired position information and the latitude threshold when the latitude identified by the acquired position information is in the excess of the latitude threshold and calculates the display range based on the latitude and a longitude identified by the acquired position information when the latitude identified by the acquired position information is not in the excess of the latitude threshold. ### Claim 3 (depends on 1) A map data display control apparatus according to claim 1, further comprising: an accepting section accepting an instructing operation for specifying the scale of a map to be displayed; and a scale determining section determining whether the accepted scale of the map is in the excess of a predetermined scale threshold or not, wherein the display range calculating section calculates the display range based on the result of the determination made by the latitude determining section and the result of the determination made by the scale determining section. ### Claim 4 (depends on 3) A map data display control apparatus according to claim 3, wherein the display range calculating section calculates the display range based on the latitude identified by the acquired position information and a predetermined value when the accepted scale of the map is not in the excess of the scale threshold. ### Claim 5 (depends on 4) A map data display control apparatus according to claim 4, wherein when the accepted scale of the map is in the excess of the scale threshold, the display range calculating section calculates the display range based on a longitude identified by the acquired position information and the latitude threshold if the latitude identified by the acquired position information is in the excess of the latitude threshold and calculates the display range based on the latitude and the longitude identified by the acquired position information if the latitude identified by the acquired position information is not in the excess of the latitude threshold. ### Claim 6 (depends on 1) A map data display control apparatus according to claim 1, further comprising a display control section causing a display section to display the rendered map. ### Claim 7 (depends on 1) A map data display control apparatus according to claim 1, wherein the position information acquiring section acquires position information based on a particular signal received from an external apparatus. ### Claim 8 (depends on 1) A map data display control apparatus according to claim 1, wherein the position information acquiring section acquires position information based on an operation input which is based on an operation by a user. ### Claim 9 A map data display control apparatus comprising: a position information acquiring section acquiring position information; a latitude determining section determining whether a latitude identified by the acquired position information is in the excess of a predetermined latitude threshold or not; and a display range calculating section calculating a display range for displaying a map with reference to a position identified by the acquired position information based on the result of the determination made by the latitude determining section. ### Claim 10 A map data display control method comprising the steps of: acquiring position information; determining whether a latitude identified by the acquired position information is in the excess of a predetermined latitude threshold or not; calculating a display range for displaying a map with reference to a position identified by the acquired position information based on the result of the determination made at the latitude determining step; and rendering a map associated with the reference position based on the calculated display range. ### Claim 11 A program causing a computer to execute the steps of: acquiring position information; determining whether a latitude identified by the acquired position information is in the excess of a predetermined latitude threshold or not; calculating a display range for displaying a map with reference to a position identified by the acquired position information based on the result of the determination made at the latitude determining step; and rendering a map associated with the reference position based on the calculated display range.