{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8462234","patent":{"patent_number":"US-8462234","title":"Image pickup apparatus and dark current correction method therefor","assignee":null,"inventors":[],"filing_date":"2011-10-27T00:00:00.000Z","publication_date":"2013-06-11T00:00:00.000Z","cpc_codes":["H04N"],"num_claims":6,"abstract":"Disclosed are an image pickup apparatus and a dark current correction method that make it possible to correct the dark current at high precision without using a driving pattern of a peripheral circuit or a layout on an image pickup device chip. The image pickup apparatus includes an image pickup device provided with an effective pixel area, an OB part and a drive circuit of the image pickup device. In the dark current correction method, a black level (hereinafter, referred to as “second black level”) included in the detected signal of the effective pixels of the effective pixel area is obtained (steps S3, S6, S7) based on a black level detected from the pixel of the OB pixels by performing a correction computation in accordance with an operation pattern (steps S1, S2, S5) of the drive circuit in which the temperature difference between the light receiving pixel part and the optical black part is occurred, and the second black level as a clamp level is subtracted from the level of the output signal of the effective pixels in accordance with the operation pattern of the drive circuit."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image pickup apparatus and dark current correction method therefor","description":"Disclosed are an image pickup apparatus and a dark current correction method that make it possible to correct the dark current at high precision without using a driving pattern of a peripheral circuit","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8462234","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-8462234","citation_suggestion":"Patentable. \"Image pickup apparatus and dark current correction method therefor\" (US-8462234). https://patentable.app/patents/US-8462234","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8462234","json":"https://patentable.app/api/llm-context/US-8462234","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T04:19:17.905Z"}