{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8494221","patent":{"patent_number":"US-8494221","title":"Inverse star tracker using psuedo-random overlapping circles","assignee":null,"inventors":[],"filing_date":"2011-04-28T00:00:00.000Z","publication_date":"2013-07-23T00:00:00.000Z","cpc_codes":["G01C"],"num_claims":20,"abstract":"A system comprises a rotatable object having a pseudo-random pattern of overlapping rounded shapes on an outer surface of the rotatable object and an image sensor configured to capture an image of a portion of the pseudo-random pattern on the outer surface. The system also comprises a memory configured to store a pattern map corresponding to the pseudo-random pattern on the outer surface of the rotatable object; and a processing unit configured to correlate the portion of the pseudo-random pattern in the captured image with a corresponding portion of the pattern map stored on the memory."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Inverse star tracker using psuedo-random overlapping circles","description":"A system comprises a rotatable object having a pseudo-random pattern of overlapping rounded shapes on an outer surface of the rotatable object and an image sensor configured to capture an image of a p","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8494221","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-8494221","citation_suggestion":"Patentable. \"Inverse star tracker using psuedo-random overlapping circles\" (US-8494221). https://patentable.app/patents/US-8494221","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8494221","json":"https://patentable.app/api/llm-context/US-8494221","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T14:31:08.467Z"}