This inventor holds 7 USPTO granted patents and 1 EPO patent. Top assignees: Matsushita Electric Industrial Co., Ltd., Panasonic Corporation. Active years: 2002-2010.
Company Filing History:
5 out of 27,375 
2 out of 16,454 
Years Active: 2002-2010
Title: Hisao Kunitani: Innovator in Current Drive Devices and Brightness Signal Processing
Introduction
Hisao Kunitani is a notable inventor based in Kyoto, Japan. He has made significant contributions to the fields of electronics and signal processing, holding a total of 7 patents. His work has been instrumental in advancing technologies that enhance device performance and image quality.
Latest Patents
Kunitani's latest patents include a current drive device and a brightness signal processing apparatus. The current drive device features a current source transistor that allows a preset drive current to flow to a drain. It also includes a cascode transistor, a switch circuit for controlling the flow of the drive current, and a bypass circuit that enables the drive current to bypass the switch circuit when it is OFF. This innovation improves the efficiency and reliability of current drive systems.
The brightness signal processing apparatus aims to enhance the accuracy of determining average brightness levels and the maximum and minimum levels of brightness signals across an entire screen. It incorporates a differential operation circuit that detects edges in horizontal and vertical synchronous signals, producing synchronized differential signals. Additionally, a sample window circuit detects the positions of horizontal and vertical intervals to generate sample window signals, which are crucial for outputting sampled brightness signals.
Career Highlights
Throughout his career, Kunitani has worked with prominent companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to the advancement of technology in the electronics industry.
Collaborations
Kunitani has collaborated with talented individuals in his field, including Atsuhisa Kageyama and Katsuya Ishikawa. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Hisao Kunitani's contributions to current drive devices and brightness signal processing have made a lasting impact on the electronics industry. His innovative spirit and dedication to advancing technology continue to inspire future generations of inventors.