Location History:
- Funabashi, JP (1987 - 1989)
- Konosu, JP (1990)
Company Filing History:
3 out of 52,730 
1 out of 8 Years Active: 1987-1990
Title: Tsutomu Uekusa: Innovator in Video Signal Technology
Introduction
Tsutomu Uekusa is a notable inventor based in Funabashi, Japan. He has made significant contributions to the field of video signal technology, holding a total of 3 patents. His work primarily focuses on systems that enhance video transmission security and quality.
Latest Patents
One of Uekusa's latest patents is a video signal scramble system. This innovative system includes a transmitter encoder that compresses the level of a horizontal sync signal component of a video intermediate frequency (IF) signal to scramble it. It also features an AM modulation degree controller that superposes a control signal on an FM audio IF signal. The system is designed to ensure secure video transmission by utilizing an oscillator circuit and a mixer to generate and combine sine waves, which are essential for the control signal.
Another significant patent is an anti-tapping system aimed at preventing unauthorized viewing of cable television (CATV). This system incorporates a terminal own address generator and an auxiliary address generator for each terminal. The center station compares signals sent back from terminals to confirm that there is no overlap of addresses, thereby providing permission for receiving signals. This innovative approach addresses potential security breaches effectively.
Career Highlights
Throughout his career, Uekusa has worked with prominent companies, including Toshiba Corporation and American Television and Communications Corporation. His experience in these organizations has contributed to his expertise in video technology and patent development.
Collaborations
Uekusa has collaborated with notable individuals in the field, including Akinori Masuko and Wataru Kuroiwa. These collaborations have further enriched his work and innovations in video signal technology.
Conclusion
Tsutomu Uekusa's contributions to video signal technology through his patents demonstrate his innovative spirit and commitment to enhancing security in video transmission. His work continues to influence the industry and pave the way for future advancements.