Location History:
- Yamatokouriyama, JP (1996)
- Yamatokoriyama, JP (1994 - 1998)
- Nara, JP (2003 - 2015)
Company Filing History:
6 out of 27,375 
3 out of 16,453 
2 out of 13,289 Years Active: 1994-2015
Title: Innovations of Toshihiko Date
Introduction
Toshihiko Date is a prominent inventor based in Nara, Japan. He has made significant contributions to the field of audio technology, holding a total of 11 patents. His work focuses on enhancing sound reproduction methods and apparatuses, which have applications in various audio systems.
Latest Patents
One of his latest patents is a sound reproduction apparatus and sound reproduction method. This invention includes a sound source localization estimating unit that performs estimates using input audio signals in an acoustic space when the input audio signals are reproduced by speakers placed in standard positions. Additionally, it features a sound source signal separating unit that calculates a sound source localization signal and separates sound source non-localization signals from the input audio signals. Furthermore, a sound source position parameter calculating unit calculates parameters indicating the position of the sound source localization signal in the acoustic space. The reproduction signal generating unit then uses these parameters to distribute the sound source localization signal to front speakers and headphones, ensuring an immersive listening experience.
Another notable patent is an audio reproduction apparatus and audio reproduction method. This invention maintains the sense of dimensions in an acoustic space even when multi-channel input audio signals are reproduced using speakers with different frequency characteristics. The apparatus includes a sound source position parameter calculating unit that determines the localization position of a sound image when reproduced by different speaker groups. It also features a reproduction signal generating unit that separates audio signals based on sound pressure levels and a signal correction unit that adjusts reproduction signals to ensure sound images are localized accurately.
Career Highlights
Toshihiko Date has worked with several notable companies throughout his career, including Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in audio technology.
Collaborations
He has collaborated with talented individuals such as Michiko Ogawa and Ryosuke Kobayashi, contributing to the advancement of audio reproduction technologies.
Conclusion
Toshihiko Date's contributions to audio technology through his innovative patents have significantly impacted the field. His work continues to influence sound reproduction methods, enhancing the listening experience for users worldwide.