Company Filing History:
2 out of 42,526 
1 out of 149 
1 out of 1 Years Active: 1985-1988
Title: Katsumi Sera: Innovator in Recording Technology
Introduction
Katsumi Sera is a notable inventor based in Katsuta, Japan. He has made significant contributions to the field of recording technology, holding a total of 2 patents. His work has had a lasting impact on the way still pictures and motor driving circuits are utilized in various devices.
Latest Patents
Sera's latest patents include a still picture recording system with noise detection and frame counting. This innovative system allows for the transition from ordinary reproduction to still picture reproduction by utilizing a method known as 'fine slow'. The system is designed to send one frame to shift the reproduction mode and will send an additional frame if noise is detected, stopping if no noise is present. Another significant patent is a motor driving circuit for video tape recorders (VTR). This circuit shortens the opposite ends of the motor driving coils of the capstan motor through a group of switching elements when a control input voltage generated from a rotation detection/oscillator falls within a predetermined range.
Career Highlights
Throughout his career, Katsumi Sera has worked with prominent companies such as Hitachi, Ltd. and Hitachi Microcomputer Engineering, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in recording technology.
Collaborations
Sera has collaborated with notable coworkers, including Hideo Nishijima and Isao Fukushima. Their combined expertise has contributed to the successful development of various technologies in the field.
Conclusion
Katsumi Sera's contributions to recording technology through his patents and collaborations highlight his role as an influential inventor. His work continues to shape the industry and inspire future innovations.