Hideo Hashimoto

Title: Hideo Hashimoto: Innovator in Signal Processing Technologies

Introduction

Hideo Hashimoto is a notable inventor based in Kanagawa, Japan, recognized for his contributions to signal processing technologies. With a total of three patents to his name, Hashimoto has made significant advancements in the field, particularly in vector quantization and predictive encoding.

Latest Patents

One of Hashimoto's latest patents is the "Basic Cell Type Full Search Vector Quantization Coder." This invention features a plurality of basic cells and a minimum distortion output vector detector. In each basic cell, a common K-dimensional input vector is divided into b sub-blocks, and n output vectors are read sequentially from a set of N output vectors. The output vectors are also divided by b, allowing for K/b comparisons between the components of the input and output vectors to identify the output vector that is closest to the input vector. The detector then compares the outputs from the basic cells to find the output vector that produces the minimum distortion, with its index signal serving as the output of the coder.

Another significant patent is the "Signal Processing Unit for Producing a Selected One of Signals." This invention is particularly useful in a predictive encoder for conference television systems. The signal processing unit comprises three prediction circuits and a selection circuit connected to these circuits. The prediction circuits generate inframe, interframe, and background prediction signals by processing an original signal at different preceding instants. The selection circuit then chooses one of these signals, enabling the production of a prediction signal that accurately reflects the original signal.

Career Highlights

Throughout his career, Hideo Hashimoto has worked with prominent companies such as Nippon Telegraph and Telephone Corporation and NEC Corporation. His experience in these organizations has contributed to his expertise in signal processing and innovation.

Collaborations

Hashimoto has collaborated with notable coworkers, including Kazumoto Iinuma and Hideo Kuroda. These partnerships have likely fostered a creative environment that has led to the development of his innovative technologies.

Conclusion

Hideo Hashimoto's work in signal processing has made a lasting impact on the field, showcasing his inventive spirit and technical expertise. His patents reflect a commitment to advancing technology and improving communication systems.