Yasuhide Okuhata

Title: Yasuhide Okuhata: Innovator in Signal Processing Technologies

Introduction

Yasuhide Okuhata is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of signal processing, holding a total of 10 patents. His work focuses on enhancing the efficiency and accuracy of reception devices and methods.

Latest Patents

Okuhata's latest patents include innovative technologies such as a reception device and method, as well as a recording medium for receiving signals. One of his notable inventions involves a local oscillator that outputs a local oscillation signal. An orthogonal detector subjects a received signal to orthogonal detection using this local oscillation signal, resulting in the output of an I-phase baseband signal and a Q-phase baseband signal. Additionally, he has developed a first and second high-pass filter (HPF) that reduces the direct current component of each baseband signal. A demodulator then processes these signals, while a distribution detector identifies any unevenness in their distribution. When such unevenness is detected, the status of the HPFs is adjusted accordingly.

Another significant patent focuses on FM reception devices and methods for receiving FM signals. This invention features a quadrature detection unit that subjects an FM signal to quadrature detection using a local oscillation signal, producing a baseband signal. The baseband signal is then corrected using a DC offset correction value derived from a DC offset detection unit. This unit converts the corrected baseband signal from rectangular to polar form, ensuring that amplitudes in various phase domains approximate each other. The FM detection unit processes the corrected baseband signal to generate a detection signal, which is further refined by an addition unit that adds an offset. An automatic frequency control (AFC) unit generates a control signal to manage the frequency of the local oscillation signal based on the detection signal.

Career Highlights

Throughout his career, Yasuhide Okuhata has worked with notable companies such as JVC Kenwood Corporation and Kenwood Corporation. His experience in these organizations has allowed him to develop and refine his innovative technologies in signal processing.

Collaborations

Okuhata has collaborated with various professionals in his field, including his coworker Atsushi Shinoda. Their joint efforts have contributed to advancements in the technologies they have developed.

Conclusion

Yasuhide Okuhata is