This inventor holds 18 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1977-2000.
Location History:
- Yokohama, JA (1977)
- Tokyo, JA (1977)
- Yokohama, JP (1979)
- Tokyo, JP (1982)
- Ebina, JP (1981 - 1983)
- Kanagawa, JP (1983 - 2000)
Company Filing History:
Years Active: 1977-2000
Title: Mitsushige Tatami: Innovator in Signal Processing Technology
Introduction
Mitsushige Tatami is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of signal processing, holding a total of 18 patents. His work has been instrumental in advancing technologies that enhance the quality and efficiency of signal conversion.
Latest Patents
Tatami's latest patents include a signal converting apparatus and method. This invention describes the conversion between a component SDI signal D1 and a composite SDI signal D2. A single memory is prepared for this process, where the corresponding signal is written into the memory according to a clock that matches the transfer rate of the SDI signal D1. The signal is then read from the memory based on a clock corresponding to the transfer rate of the SDI signal D2. The digital signal read from the memory is re-distributed using header information added to the SDI signal D2. This innovation allows for cost reduction in signal conversion by utilizing a single signal conversion memory and minimizing the need for additional signal conversion memories and their peripheral circuits.
Another notable patent is the PAL video time base corrector, which inverts the color difference signal (V) axis. This time base corrector converts an analog input PAL image signal, which includes a time base error, into digital form and stores it in memory using a write clock signal derived from the input image signal. The stored signal is then read out using a reference readout clock signal to eliminate the time base error, with a reference color burst signal added. The time base corrector extracts a color subcarrier signal from the input image signal and samples it to generate U-axis and V-axis data independently. It then compares the polarity of the V-axis data with that of the reference color burst signal, selectively inverting the polarity based on the comparison result.
Career Highlights
Mitsushige Tatami has had a distinguished career at Sony Corporation, where he has been able to apply his innovative ideas and technical expertise. His work has not only contributed to the company's success but has also influenced the broader field of signal processing technology.
Collaborations
Tatami has collaborated with notable coworkers, including Junichi Yanagisawa and Yoshinori Suzuki. Their combined efforts have led to advancements in various projects within the company.
Conclusion
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