This inventor holds 3 USPTO granted patents. Top assignee: Pioneer Electronic Corporation. Active years: 1976-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Tokyo, J (1976)
- Kawagoe, JA (1977)
- Saitama, JP (1993)
Company Filing History:
Years Active: 1976-1993
Title: Terumasa Shimizu: Innovator in Audio Technology
Introduction
Terumasa Shimizu is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of audio technology, particularly in the development of systems that enhance user experience in car stereos and telecommunication devices. With a total of two patents to his name, Shimizu's work reflects a commitment to innovation and functionality.
Latest Patents
Shimizu's latest patents include an "Automatic ejection system of a car stereo having a detachable grille." This invention features a loading device equipped with a grille detector that identifies when the grille is removed from the car stereo. It produces a detachment signal, along with a tape detector that checks for the presence of a tape in the stereo, generating a tape signal. The ejection controller responds to both signals, allowing for the automatic ejection of the tape from the stereo.
Another significant patent is the "Voice versus pulsed tone signal discrimination circuit." This invention presents two circuit embodiments designed to differentiate between voice signals and standard audio signals, such as busy and dial tones, on a telephone line. The first embodiment measures the frequency of the audio signal's envelope, determining voice presence if frequencies above 50 Hz are detected. The second embodiment assesses the cyclic frequency, identifying voice presence at frequencies above 600 Hz, while incorporating features to prevent erroneous counting during audio signal fluctuations.
Career Highlights
Terumasa Shimizu is currently associated with Pioneer Electronic Corporation, a leading company in the audio and electronics industry. His work at Pioneer has allowed him to explore innovative solutions that enhance audio technology and user interaction.
Collaborations
Shimizu has collaborated with notable colleagues, including Shizuo Ando and Takashi Suzuki. These partnerships have contributed to the development of advanced technologies in the audio sector.
Conclusion
Terumasa Shimizu's contributions to audio technology through his patents demonstrate his innovative spirit and dedication to improving user experiences. His work continues to influence the industry and inspire future advancements in audio systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile