{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8528013","patent":{"patent_number":"US-8528013","title":"Method and apparatus for limiting access to programming in a switched digital video system","assignee":null,"inventors":[],"filing_date":"2007-11-20T00:00:00.000Z","publication_date":"2013-09-03T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N"],"num_claims":14,"abstract":"A content delivery system headend is provided. The headend includes a Switched Digital Video (SDV) manager for coordinating SDV sessions requested by subscribers over an access network. The headend also includes an input unit such as a server for receiving content to be broadcast during the SDV sessions. Additionally, the headend includes a subscriber control unit for comparing channel change requests received by the SDV manager from subscribers to subscriber-established rules. Tuning information for accessing programming specified in the channel change requests is only supplied if the channel change requests do not conform to any of the subscriber-established rules for blocking the programming."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for limiting access to programming in a switched digital video system","description":"A content delivery system headend is provided. The headend includes a Switched Digital Video (SDV) manager for coordinating SDV sessions requested by subscribers over an access network. The headend al","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8528013","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-8528013","citation_suggestion":"Patentable. \"Method and apparatus for limiting access to programming in a switched digital video system\" (US-8528013). https://patentable.app/patents/US-8528013","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8528013","json":"https://patentable.app/api/llm-context/US-8528013","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T10:30:30.462Z"}