{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-10505735","patent":{"patent_number":"US-10505735","title":"Digital content protection over audio return data link","assignee":null,"inventors":[],"filing_date":"2015-12-07T00:00:00.000Z","publication_date":"2019-12-10T00:00:00.000Z","cpc_codes":["H04L","G06F","H04L","H04L","H04L","H04L"],"num_claims":21,"abstract":"Embodiments relate to inserting a preamble code as a preamble of a sub-frame of encrypted data to indicate rekeying is to be performed at a source device and to indicate data of the sub-frame and subsequent sub-frames is encrypted. A sink device authenticates a source device using an authentication and encryption protocol. The sink device receives a data stream including audio data. At least a portion of the received audio data is encrypted and the encrypted audio data is packetized into sub-frames. The sink device inserts a first preamble code as a preamble of a sub-frame to indicate rekeying is to be performed at the source device according to the authentication and encryption protocol, and to indicate that the audio data in a payload of the sub-frame and payloads of subsequent sub-frames is encrypted. The sink device transmits the packet to the source device via a first data link."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Digital content protection over audio return data link","description":"Embodiments relate to inserting a preamble code as a preamble of a sub-frame of encrypted data to indicate rekeying is to be performed at a source device and to indicate data of the sub-frame and subs","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-10505735","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-10505735","citation_suggestion":"Patentable. \"Digital content protection over audio return data link\" (US-10505735). https://patentable.app/patents/US-10505735","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-10505735","json":"https://patentable.app/api/llm-context/US-10505735","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:25:03.211Z"}