Toshihiro Torii

Title: **Inventor Toshihiro Torii: Innovations in Audio Technology**

Introduction

Toshihiro Torii is a prominent inventor based in Uji, Japan, known for his significant contributions to audio technology. With three patents to his name, his work showcases innovative approaches to digital-to-analog conversion systems and optical disk technology.

Latest Patents

Toshihiro Torii’s latest patents highlight his expertise in developing efficient audio systems. One of his notable inventions is a **DAC device and audio system**, which incorporates a distortion correction function. This function, denoted as g1(x), is derived from frequency analysis of an analog output signal generated by a DAC circuit. The system determines a correction value using the correction function g1(x) based on the input digital signal, which is stored in memory. A nonlinear correction circuit retrieves the relevant correction value from memory in response to the digital signal output from a digital filter, then transmits it to a subtractor that adjusts the digital signal accordingly.

Another innovative contribution is the **white dot out detecting device**. This invention includes a recording/reproduction control signal generator that indicates the state of an optical disk—whether it is recording or reproducing. The device employs a variable gain amplifier that amplifies information signals read from the optical disk. This gain is adjusted based on the control signal. Additional components, such as an envelope detector, integrator, and level shifter, work in tandem to enhance the detection accuracy of the white dot out phenomenon.

Career Highlights

Throughout his career, Toshihiro Torii has been affiliated with leading companies that emphasize innovation in technology. He has worked at Matsushita Electric Industrial Co., Ltd. and Panasonic Intellectual Property Management Co., Ltd., where he honed his skills and contributed to advancements in electronic systems.

Collaborations

In his professional journey, Torii has collaborated with esteemed colleagues like Teruhiko Izumi and Yoshihiro Horii. These partnerships have played a crucial role in fostering creativity and driving projects that enhance technological capabilities in the audio sector.

Conclusion

Toshihiro Torii's inventive spirit and dedication to advancing audio technology are evidenced by his groundbreaking patents. His work not only reflects a deep understanding of electronic systems but also a commitment to solving real-world problems in audio fidelity. As technology continues to evolve, inventors like Torii remain at the forefront, paving the way for future innovations.