This inventor holds 4 USPTO granted patents. Top assignee: Mitsubishi Denki Kabushiki Kaisha. Active years: 1990-1996.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kanagawa, JP (1990 - 1994)
- Kamakura, JP (1996)
Company Filing History:
Years Active: 1990-1996
Title: Kunio Nakajima: Innovator in Vocoder Technology
Introduction
Kunio Nakajima is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of vocoder technology, holding a total of 4 patents. His work focuses on enhancing speech synthesis and recognition through innovative devices and methodologies.
Latest Patents
One of Nakajima's latest patents is a code-book driven vocoder device with a voice source generator. This device includes an encoder unit that utilizes AR and MA code-books, along with a voice source code-book. These code-books store code words corresponding to various parameters obtained through analysis by synthesis of multiple speech waveform examples. The device synthesizes speech waveforms by selecting code words that approximate the input speech signal, ensuring high-quality speech synthesis.
Another notable patent is a pattern representation model training apparatus. This apparatus employs a Hidden Markov Model (HMM) training method that enhances recognition accuracy by considering the capacity for discriminating between models. It computes the probability of a vector sequence appearing from HMMs, allowing for the selection of the nearest different-category HMM to improve the training process.
Career Highlights
Kunio Nakajima is associated with Mitsubishi Electric Corporation, where he has contributed to various innovative projects. His expertise in vocoder technology has positioned him as a key figure in the development of advanced speech processing systems.
Collaborations
Throughout his career, Nakajima has collaborated with notable colleagues, including Hirohisa Tasaki and Shinobu Mizuta. These collaborations have further enriched his work and contributed to the advancement of technology in their field.
Conclusion
Kunio Nakajima's contributions to vocoder technology and speech synthesis have made a lasting impact in the field. His innovative patents and collaborations reflect his dedication to advancing technology and improving communication systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile