{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8531251","patent":{"patent_number":"US-8531251","title":"Through-zero pulse-width modulation process with period-average-zero","assignee":null,"inventors":[],"filing_date":"2010-11-08T00:00:00.000Z","publication_date":"2013-09-10T00:00:00.000Z","cpc_codes":["H04L"],"num_claims":25,"abstract":"New methods for generating through-zero pulse-width modulation are disclosed. In one approach, a periodic reference signal varies over time over at least one portion of the period. A pulse-width control signal varies linearly with time over at least one portion of the reference signal. The reference signal is compared with the pulse-width control value to produce a first pulse waveform. The value of a function of the control value is subtracted from the first pulse waveform to produce through-zero pulse-width modulation. In another approach, the difference in value between two ramp or sawtooth periodic waveforms is computed to produce a pulse waveform with a time-varying DC offset that varies linearly in time. The time-varying offset-term is retained with the pulse waveform, producing through-zero pulse-width modulation."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Through-zero pulse-width modulation process with period-average-zero","description":"New methods for generating through-zero pulse-width modulation are disclosed. In one approach, a periodic reference signal varies over time over at least one portion of the period. A pulse-width contr","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8531251","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-8531251","citation_suggestion":"Patentable. \"Through-zero pulse-width modulation process with period-average-zero\" (US-8531251). https://patentable.app/patents/US-8531251","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8531251","json":"https://patentable.app/api/llm-context/US-8531251","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T10:17:39.872Z"}