Tooru Shirotori

Title: Tooru Shirotori: Innovator in Clock Signal Generation

Introduction

Tooru Shirotori is a notable inventor based in Suwa, Japan. He has made significant contributions to the field of computer systems through his innovative designs and patents. His work primarily focuses on enhancing the efficiency of clock signal generation and distribution.

Latest Patents

Tooru Shirotori holds a patent for a "Flexible clock and reset signal generation and distribution system." This invention provides a method for distributing a relatively low frequency clock signal to various elements of a computer system that require higher frequency clock signals for operation. The system includes programmable frequency synthesizers containing phase locked loop (PLL) type frequency multipliers, which are located physically adjacent to the computer system elements. These synthesizers receive the low frequency clock signal and generate the various required higher frequency clock signals. The source of the low frequency clock signal is a real-time clock (RTC) module that features a crystal oscillator, a reset signal generator, and a low voltage detector. The RTC module is designed to switch off the low frequency clock signal when the main system power supply falls below a prescribed voltage level. Additionally, it provides a system reset signal that is asserted a predetermined delay time after the low frequency clock signal is provided.

Career Highlights

Tooru Shirotori is associated with Seiko Epson Corporation, where he has been able to apply his expertise in clock signal technology. His work has contributed to the advancement of computer systems, making them more efficient and reliable.

Collaborations

Throughout his career, Tooru has collaborated with notable colleagues such as Kazushige Ichinose and Masayuki Kikushima. These collaborations have further enriched his work and led to innovative solutions in the field.

Conclusion

Tooru Shirotori is a distinguished inventor whose contributions to clock signal generation have had a lasting impact on computer technology. His innovative patent reflects his commitment to enhancing system efficiency and reliability.