Hironari Nishino

Title: Hironari Nishino: Innovator in Signal Processing Technology

Introduction

Hironari Nishino is a notable inventor based in Fujisawa, Japan, recognized for his contributions to signal processing technology. With a total of two patents to his name, he has made significant advancements in the field, particularly in synchronization circuits for video signals and liquid crystal display devices.

Latest Patents

Nishino's latest inventions include a synchronous signal separation circuit and a dot clock generator for liquid crystal display devices. The synchronous signal separation circuit effectively separates and fetches a synchronous signal from a video signal by employing an amplifier that enhances the voltage to within a predetermined dynamic range. It incorporates a voltage generator capable of producing a variable offset voltage to optimize the reference level of the amplified output. This circuit ensures the efficient extraction of the synchronous signal through careful voltage comparison.

The dot clock generator, on the other hand, innovatively processes a horizontal sync signal to produce a dot clock with minimal skew. It does this by dividing the phase locked loop (PLL) into three functional sections. The first generates a specific frequency using a latch type digital-to-analog converter (DAC) connected to a voltage controlled oscillator (VCO). The second part synchronizes the dot clock by addressing any phase discrepancies between the actual and estimated horizontal sync signals. Finally, the third segment of the PLL generates the dot clock based on the frequency established in the initial part.

Career Highlights

Nishino currently contributes his expertise to IBM, a leading technology company. His work at IBM comprises significant developments that impact electronic communication and display technologies. His innovative solutions have established him as a key figure in his field.

Collaborations

Throughout his career, Nishino has collaborated with several esteemed colleagues, including Johji Mamiya and Kohnji Ishii. These collaborations have facilitated the exchange of ideas and innovations, further enhancing the advancements in signal processing technology.

Conclusion

Hironari Nishino’s patents underscore his talent and creativity as an inventor in the rapidly evolving field of electronic signal processing. His work continues to influence modern technologies and reinforces the importance of innovation in enhancing the effectiveness of multimedia systems.