{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8539232","patent":{"patent_number":"US-8539232","title":"Information terminal apparatus, information processing apparatus and information communication system","assignee":null,"inventors":[],"filing_date":"2003-06-17T00:00:00.000Z","publication_date":"2013-09-17T00:00:00.000Z","cpc_codes":["H04L","G01S","G01S","G01S","H04L","H04L","H04L","H04W","H04W","H04W","H04L","H04L"],"num_claims":21,"abstract":"When transmitting position/time information calculated by means of a GPS function to a server apparatus, authentication is carried out with the server apparatus. The position/time information may be certified as legitimate measured by a portable apparatus with a GPS reception function employed by a user. When transmitting information related to the position and the time acquired from a portable phone terminal having the GPS function and a network function by means of the GPS function to the server apparatus, authentication is carried out between the portable phone terminal and the server apparatus. The position/time information is transmitted to the server apparatus, only if the server apparatus is authenticated as a legitimate counterpart for connection. A secret key holding section is provided for holding different secret keys for different apparatuses. The position/time information measured based on an electromagnetic wave received from a positioning satellite is digitally signed by means of the secret key. The identification information and the position/time information having the digital signature are then transmitted to a counterpart."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Information terminal apparatus, information processing apparatus and information communication system","description":"When transmitting position/time information calculated by means of a GPS function to a server apparatus, authentication is carried out with the server apparatus. The position/time information may be c","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8539232","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-8539232","citation_suggestion":"Patentable. \"Information terminal apparatus, information processing apparatus and information communication system\" (US-8539232). https://patentable.app/patents/US-8539232","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8539232","json":"https://patentable.app/api/llm-context/US-8539232","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:29:58.705Z"}