This inventor holds 12 USPTO granted patents. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1984-2000.
Location History:
- Kyoto, JP (1984)
- Katano City, JP (1985)
- Osaka, JP (1986 - 1987)
- Katano, JP (1987 - 2000)
Company Filing History:
Years Active: 1984-2000
Title: Innovations of Hiroshi Saka
Introduction
Hiroshi Saka is a prominent inventor based in Katano, Japan. He has made significant contributions to the field of telecommunications, holding a total of 12 patents. His work focuses on advanced modulation and demodulation techniques that enhance signal processing.
Latest Patents
One of Hiroshi Saka's latest patents is a demodulation apparatus that performs different frequency control functions. This invention processes a QPSK modulation signal through frequency conversion into an IF signal, which is then converted into a baseband signal by a quadrature demodulator. The baseband signal undergoes wave shaping by DTFs before being sent to a carrier recovery circuit. The apparatus compensates for offset frequencies detected by an AFC circuit, ensuring that frequency deviations do not exceed reference values.
Another notable patent is a channel selecting apparatus that simultaneously selects modulation signals received at different channels. This invention allows for the control of digitally modulated IF signals based on frequency shift information, optimizing the input frequency for demodulation circuits.
Career Highlights
Hiroshi Saka has had a distinguished career at Matsushita Electric Industrial Co., Ltd., where he has been instrumental in developing innovative technologies. His expertise in signal processing and modulation has positioned him as a key figure in the industry.
Collaborations
Throughout his career, Hiroshi has collaborated with notable colleagues, including Toshihide Tanaka and Kazunao Urata. These partnerships have fostered a creative environment that has led to groundbreaking advancements in telecommunications.
Conclusion
Hiroshi Saka's contributions to the field of telecommunications through his innovative patents and collaborative efforts have significantly impacted the industry. His work continues to influence advancements in signal processing and modulation techniques.