Company Filing History:
Years Active: 1994-2001
Title: Yasuko Shirai: Innovator in Digital Signal Processing
Introduction
Yasuko Shirai is a prominent inventor based in Kawasaki, Japan. She has made significant contributions to the field of digital signal processing, particularly in the development of innovative coding and decoding systems. With a total of 2 patents, her work has had a notable impact on technology.
Latest Patents
Yasuko Shirai's latest patents include a CODEC for consecutively performing a plurality of algorithms. This CODEC features a digital signal processor (DSP) capable of executing multiple algorithms without memory capacity restrictions. The DSP performs encoding and decoding operations on digital signals, utilizing a program memory that stores programs divided into block programs. Additionally, a data memory stores sets of data for executing each block program, allowing for efficient processing.
Another significant patent is a speech signal coding and decoding system that transmits an allowance range. This apparatus inputs a pitch period generated by coding a speech signal and outputs information regarding the range for that pitch period. The decoding apparatus then determines if the pitch period falls within the specified range, ensuring accurate signal processing.
Career Highlights
Yasuko Shirai is currently employed at Fujitsu Corporation, where she continues to innovate in the field of digital signal processing. Her work has been instrumental in advancing technologies that enhance communication systems and improve data transmission efficiency.
Collaborations
Throughout her career, Yasuko has collaborated with notable colleagues, including Hideaki Kurihara and Teruyuki Sato. These collaborations have fostered a creative environment that has led to groundbreaking advancements in their respective fields.
Conclusion
Yasuko Shirai's contributions to digital signal processing exemplify her dedication to innovation and technology. Her patents reflect her expertise and commitment to enhancing communication systems, making her a significant figure in her field.