Location History:
- Tokyo, JA (1977 - 1978)
- Tokyo, JP (1979 - 1988)
Company Filing History:
7 out of 1,038 
1 out of 1 Years Active: 1977-1988
Title: The Innovative Mind of Yukihiko Iijima
Introduction
Yukihiko Iijima, a prominent inventor based in Tokyo, Japan, is renowned for his contributions to the field of image processing and television technology. With a total of eight patents to his name, Iijima's innovative spirit has paved the way for advancements in predictive coding systems and television signal detection circuits.
Latest Patents
Iijima's recent innovations include a predictive coding/decoding system for block-formed picture signals. This sophisticated system incorporates both predictive coding and decoding units on the transmitter and receiver sides. Each unit features a control pulse generator that responds to horizontal synchronization pulses, generating crucial sampling and select signals. The design utilizes selectors that adaptively choose between the prediction signal combined with a prediction error signal or a fixed value for input into the prediction circuit, especially during partial picture blocks with pixel fractions resulting from block formation.
Another significant patent is the television signal amplitude detection circuit. This circuit is designed for detecting the amplitude of composite television signals and is finely tuned to operate within the vertical synchronizing signal intervals, thereby enhancing the precision of signal detection.
Career Highlights
Throughout his career, Yukihiko Iijima has worked with some of Japan's leading technology firms. Notably, he was associated with Nippon Electric Co., Ltd., and NEC Corporation, where he significantly contributed to the advancement of electronic communications. Additionally, he worked for Nippon Telegraph and Telephone Corporation, further expanding his expertise and influence in the industry.
Collaborations
Iijima has had the privilege of collaborating with esteemed colleagues in the field, such as Tatsuo Ishiguro and Kazumoto Iinuma. These partnerships have resulted in innovative solutions and further enriched the scope of his inventions.
Conclusion
Yukihiko Iijima's inventive contributions have had a lasting impact on technology related to image processing and television signals. With eight patents that showcase his creativity and technical prowess, Iijima remains a significant figure in the evolution of modern electronic communication systems. His continued work promises further innovations that will enhance our interaction with technology.