Masami Yamagishi

This inventor holds 5 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.. Active years: 1993-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masami Yamagishi. Retrieved from https://idiyas.com/inventor/masami-yamagishi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 5.1

ph-index = 5

Forward Citations = 175(Granted Patents)

Location History:

Zama, JP (1995 - 1997)
Yokohama, JP (1993 - 1999)
Ebina, JP (1999)

Company Filing History:

Hitachi Video and Information System, Inc.

patents

where one patent can have more than one assignee

Years Active: 1993-1999

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5915120 - Information processing apparatus having a power management system that (1999-06-22),

2. 5914728 - Motion image display apparatus (1999-06-22),

3. 5666161 - Method and apparatus for creating less amount of compressd image data (1997-09-09),

4. 5473382 - Video signal converting apparatus for converting an interlace video (1995-12-05),

5. 5229762 - Gradation conversion system for converting color display data into (1993-07-20),

Title: Masami Yamagishi: Innovator in Multimedia Systems

Introduction

Masami Yamagishi is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of multimedia systems, holding a total of five patents. His work focuses on enhancing the functionality and efficiency of information processing apparatuses.

Latest Patents

One of Yamagishi's latest patents is a motion image display apparatus. This multimedia system is designed to allow for easy expansion of its display memory, along with various compression and expansion functions. The system is implemented through an information processing apparatus that includes a controller, an extended input/output bus, and an interface device. Additionally, it features at least one function extending device that enhances the controller's capabilities and a local bus for data exchanges. Another significant patent is for an information processing apparatus with a power management system. This system includes a central processing unit and various input/output units, such as a liquid crystal display and a hard disk drive. It also incorporates a battery that supplies power to these units. The apparatus is designed to optimize operating time based on the battery's residual capacity, ensuring efficient power consumption.

Career Highlights

Yamagishi has worked with prominent companies such as Hitachi, Ltd. and Hitachi Video and Information System, Inc. His experience in these organizations has contributed to his expertise in multimedia technology and information processing systems.

Collaborations

Throughout his career, Yamagishi has collaborated with talented individuals, including Tomohisa Kohiyama and Taminori Tomita. These collaborations have likely enriched his work and led to innovative advancements in his field.

Conclusion

Masami Yamagishi's contributions to multimedia systems and information processing apparatuses highlight his innovative spirit and technical expertise. His patents reflect a commitment to enhancing technology for better performance and efficiency.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]