{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8532488","patent":{"patent_number":"US-8532488","title":"Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity to support voice and/or data services","assignee":null,"inventors":[],"filing_date":"2012-11-30T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04B","H04J","H04J","H04L","H04N","H04N","H04N","H04N","H04Q","H04W","H04N"],"num_claims":24,"abstract":"Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth, and a cable modem system including one or more demodulation tuners to receive and demodulate one or more upstream radio frequency (RF) signals. One or more RF signals include an encoded carrier wave having a carrier frequency of between 5 MHz and 16.4 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. An aggregate deployed upstream capacity of the one or more RF signals to convey the upstream information in a portion of the upstream path bandwidth between 5 MHz and 16.4 MHz is at least approximately 12 Megabits per second (Mbits/s)."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity to support voice and/or data services","description":"Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth, and a cable mo","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8532488","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-8532488","citation_suggestion":"Patentable. \"Cable communication systems and methods employing QAM upstream channels below 16.4 MHz for increased aggregate deployed upstream capacity to support voice and/or data services\" (US-8532488). https://patentable.app/patents/US-8532488","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8532488","json":"https://patentable.app/api/llm-context/US-8532488","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T15:37:28.966Z"}