Kunihiko Hashimoto is a prominent inventor based in Neyagawa, Japan. He has made significant contributions to the field of Global Navigation Satellite Systems (GNSS) technology. With a total of 3 patents to his name, Hashimoto continues to push the boundaries of innovation in this critical area.

Latest Patents

Hashimoto's latest patents include a GNSS receiving device and a GNSS receiving method. The GNSS receiver he developed incorporates at least two antennas, a satellite direction acquisition module, an estimation module, and a determination module. The satellite direction acquisition module is responsible for acquiring the direction of the satellite corresponding to the GNSS signal received by the antenna, based on satellite orbit information. The estimation module estimates the arrival direction of the GNSS signal by analyzing the timing differences when the signal is received by multiple antennas. The determination module then compares the satellite viewing direction with the estimated arrival direction to ascertain whether the received GNSS signal is a direct signal or a non-line-of-sight (NLOS) signal.

Another notable patent is a reference signal generator that includes a synchronization circuit designed to convert a digital signal into an analog signal. This generator supplies the signal to a voltage-controlled oscillator and controls it to obtain a signal synchronized with the reference signal, effectively avoiding quantization error accumulation during holdover control when a reference signal is unavailable. The reference signal generator features a phase synchronization circuit and a controller that generates a free-running control signal to manage the oscillator when the reference signal is not present.

Career Highlights

Kunihiko Hashimoto is currently employed at Furuno Electric Company Limited, where he continues to innovate and develop advanced technologies in GNSS systems. His work has been instrumental in enhancing the accuracy and reliability of GNSS applications.

Collaborations

Hashimoto has collaborated with notable colleagues, including Hiroyuki Toda and Masaki Suyama, contributing to various projects that advance GNSS technology.

Conclusion

Kunihiko Hashimoto is a key figure in the field of GNSS technology, with a focus on developing innovative solutions that improve satellite signal reception and processing. His contributions are vital to the ongoing evolution of navigation systems.

Profile summary based on public USPTO records.

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