{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9728167","patent":{"patent_number":"US-9728167","title":"Device and method for controlling electronic map","assignee":null,"inventors":[],"filing_date":"2014-09-23T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["G09G","G06F","G06F","G06F","G09G","G06F","G06F","G06F","G09G","G09G","G09G","G09G"],"num_claims":18,"abstract":"The present invention discloses a device and method for controlling zooming-in of an electronic map, a device and method for controlling zooming-out of an electronic map, a device and method for controlling panning of an electronic map, a device and method for computing tiles within a visual region of an electronic map, and a device and method for processing an electronic map tile request queue, wherein the method for controlling zooming-in of an electronic map comprises: determining a target display level to be reached via zooming in when receiving an instruction of zooming in the map, and searching out a plurality of target tiles that need to be displayed in the target display level; selecting a pre-loaded display level based on a relationship between a current display level and the target display level, and searching out pre-loaded tiles corresponding to the target tiles in the pre-loaded display level; acquiring the pre-loaded tiles and the target tiles according to an order of priority, loading and displaying the pre-loaded tiles by zooming in according to a level difference between the pre-loaded display level and the target display level; and after acquiring the target tiles, loading and displaying the target tiles so as to replace the zoomed-in pre-loaded tiles at corresponding positions."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device and method for controlling electronic map","description":"The present invention discloses a device and method for controlling zooming-in of an electronic map, a device and method for controlling zooming-out of an electronic map, a device and method for contr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9728167","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9728167","citation_suggestion":"Patentable. \"Device and method for controlling electronic map\" (US-9728167). https://patentable.app/patents/US-9728167","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9728167","json":"https://patentable.app/api/llm-context/US-9728167","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:59:42.974Z"}