Location History:
- Kyoto, JP (1986 - 1987)
- Tsuzuki, JP (1986 - 1987)
- Tuzuki, JP (1987)
Company Filing History:
Years Active: 1986-1987
Title: Akio Hashima: Innovator in Video Signal Processing
Introduction
Akio Hashima is a prominent inventor based in Tsuzuki, Japan. He has made significant contributions to the field of video signal processing, holding a total of 7 patents. His work has greatly influenced the technology used in video tape recorders and teletext signal processing.
Latest Patents
One of Hashima's latest patents is a video signal processing apparatus for video tape recorders. This apparatus performs chrominance signal processing that is digitalized. The chrominance signal is up-converted and phase-shifted in a recording block, while in the reproducing block, it is phase-shifted in the opposite direction, filtered by a comb filter, compensated for jitter, and up-converted to the original chrominance signal. Both the recording and reproducing blocks can be digitalized, or only the reproducing block can be digitalized. The digital chrominance signal processing circuit includes an A/D converter, a digital phase shifter, a digital comb filter, a digital jitter compensator, and a D/A converter.
Another notable patent is a magnetic recording and playback apparatus for teletext signals. This apparatus accurately records and reproduces the teletext signal superposed within the vertical blanking period of television signals. It includes at least one wide band filter, at least one narrow band filter, and a filter selection switch that switches filters for luminance and chrominance signal processing systems. A control circuit generates a control signal for the filter selection switch, ensuring that the teletext signal is accurately processed.
Career Highlights
Akio Hashima has had a distinguished career at Matsushita Electric Industrial Co., Ltd. His innovative work in video technology has earned him recognition in the industry. His patents reflect his commitment to advancing video signal processing technology.
Collaborations
Throughout his career, Hashima has collaborated with notable colleagues, including Masao Tomita and Masahiro Honjo. These collaborations have contributed to the development of cutting-edge technologies in the field.
Conclusion
Akio Hashima is a key figure in the realm of video signal processing, with a notable portfolio of patents that showcase his innovative spirit. His contributions continue to impact the technology used in video recording and playback systems.