This inventor holds 1 USPTO granted patent. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1996
Title: Katsushi Seza and Code-Book-Driven Vocoder Technology.
Introduction
Katsushi Seza is an inventor associated with Kamakura, Japan, and Mitsubishi Electric Corporation. His recorded patent concerns a vocoder device that uses code books and speech synthesis to select parameters for encoding speech.
Latest Patents
Seza is credited with 1 patent: “Code-book driven vocoder device with voice source generator.” The invention uses separate code books for AR, MA, and voice-source parameters, derived by analyzing and clustering speech examples. Preliminary selectors identify candidate code words, and a speech synthesizer generates waveforms from combinations of those candidates. The device compares the synthesized waveforms with the input speech and selects the combination with the smallest distance from the input waveform.
Career Highlights
The available information associates Seza’s patent work with Mitsubishi Electric Corporation. The patent describes an approach to vocoder encoding that evaluates candidate parameter combinations through analysis by synthesis.
Collaborations
Seza’s listed coworkers include Hirohisa Tasaki and Kunio Nakajima.
Conclusion
Katsushi Seza’s recorded invention applies code-book selection and synthesized-waveform comparison to speech encoding, reflecting a technical contribution to vocoder design.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile