This inventor holds 1 USPTO granted patent. Top assignee: Sony Corporation. Active years: 1979.
Company Filing History:
Years Active: 1979
Title: Kiyoshi Ishihata: Innovator in Television Technology
Introduction
Kiyoshi Ishihata is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of television technology, particularly in the development of detector circuits for color television receivers. His innovative work has paved the way for advancements in how color signals are processed in television systems.
Latest Patents
Ishihata holds a patent for a "Detector circuit for color television receivers." This invention features a pair of transistors whose collector-emitter circuits are connected in parallel. The circuit includes an input circuit, such as a differential amplifier, which supplies a differential input signal to the base electrodes of the transistors. Additionally, it incorporates an impedance element coupled between the collector electrodes and a voltage source, along with an integration circuit that processes the detected signal to provide an output signal. A reference-voltage circuit is also included to supply a threshold voltage to the emitter electrodes of the transistors. This detector circuit is particularly advantageous in the color demodulating circuit of a color television receiver.
Career Highlights
Kiyoshi Ishihata has had a distinguished career at Sony Corporation, where he has been instrumental in developing cutting-edge technologies for television receivers. His work has not only enhanced the quality of color television but has also contributed to the overall advancement of electronic devices in the entertainment industry.
Collaborations
Throughout his career, Ishihata has collaborated with talented individuals such as Kyoichi Murakami and Takao Tsuchiya. These collaborations have fostered innovation and have led to the successful development of various technologies in the field.
Conclusion
Kiyoshi Ishihata's contributions to television technology, particularly through his patented detector circuit, highlight his role as a key innovator in the industry. His work continues to influence the way color television receivers operate today.