{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8509435","patent":{"patent_number":"US-8509435","title":"Method and system for a transport single key change point for all package identifier channels","assignee":null,"inventors":[],"filing_date":"2007-05-02T00:00:00.000Z","publication_date":"2013-08-13T00:00:00.000Z","cpc_codes":["H04N","H04L","H04L","H04L","H04N","H04N","H04N","H04N","H04N","H04N","H04L","H04L"],"num_claims":32,"abstract":"Methods and systems for a transport single key change point for all package identifier channels are disclosed and may include descrambling a received transport stream comprising multiple package identifier (PID) channels with multiple key change points, and synchronizing at least a portion of the multiple key change points to occur at a common time. The transport stream may be conditional access or copy protect scrambled. The timing of the key change points may be synchronized by modifying one or more scrambling control bits for the descrambled received transport stream. At least one PID channel in said descrambled received transport stream may be re-scrambled utilizing one or more of the scrambling control bits, and a portion of the PID channels may bypass the re-scrambling. The re-scrambling may include one or more of CP re-scrambling and CA re-scrambling. Each PID channel may be de-scrambled and/or re-scrambled utilizing a separate key."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and system for a transport single key change point for all package identifier channels","description":"Methods and systems for a transport single key change point for all package identifier channels are disclosed and may include descrambling a received transport stream comprising multiple package ident","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8509435","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-8509435","citation_suggestion":"Patentable. \"Method and system for a transport single key change point for all package identifier channels\" (US-8509435). https://patentable.app/patents/US-8509435","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8509435","json":"https://patentable.app/api/llm-context/US-8509435","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T01:51:11.111Z"}