This inventor holds 2 USPTO granted patents. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1998-1999.
Company Filing History:
Years Active: 1998-1999
Title: Tsutomu Fujishima: Innovator in Video Signal Processing
Introduction
Tsutomu Fujishima is a notable inventor based in Kumagaya, Japan. He has made significant contributions to the field of video signal processing, holding a total of 2 patents. His work has advanced the technology used in detecting various components of video signals.
Latest Patents
Fujishima's latest patent is a letter-box screen detection apparatus. This innovative device detects the DC level of the low-frequency component of a horizontal frequency from a video signal using a horizontal low pass filter (LPF) and a DC value detection circuit. Additionally, it identifies the high-frequency component of the horizontal frequency through a horizontal band pass filter (BPF) and a nonlinear circuit. Furthermore, the apparatus detects a high-frequency component in the vertical direction using a vertical BPF and a nonlinear circuit. Based on these three detection results, the presence or absence of a non-image portion of the video signal is determined by a determination circuit.
Career Highlights
Fujishima is associated with Kabushiki Kaisha Toshiba, a leading company in technology and innovation. His work at Toshiba has allowed him to focus on developing advanced video signal processing technologies.
Collaborations
Throughout his career, Fujishima has collaborated with notable colleagues, including Satoyuki Ishii and Shigeki Kamimura. These collaborations have contributed to the success of his projects and innovations.
Conclusion
Tsutomu Fujishima is a distinguished inventor whose work in video signal processing has led to significant advancements in the field. His contributions continue to influence technology today.