Company Filing History:
Years Active: 1980-1990
Title: Akira Kanemasa: Innovator in Echo Cancellation Technology
Introduction
Akira Kanemasa is a prominent inventor based in Tokyo, Japan, known for his significant contributions to echo cancellation technology. With a total of 10 patents to his name, Kanemasa has made strides in improving communication systems by effectively addressing echo issues.
Latest Patents
One of Kanemasa's latest inventions is an advanced echo canceller designed to enhance the quality of digital communication. This echo canceller features a first transversal filter that generates a first echo canceling signal, which is crucial for eliminating unwanted echoes from output signals. The design includes a second transversal filter that addresses sampling clock jitter, ensuring that echo signals are accurately canceled even under varying conditions. Additionally, the canceller incorporates two subtractors to remove the echo canceling signals from the digital reception signal, along with a controller that detects jitter and adjusts the filter coefficients accordingly.
Another notable patent involves an echo canceller that operates during 2-wire/4-wire conversion. This invention includes a filter that reduces the tail of the echo response waveform and a first transversal filter that generates a canceling signal for echoes sampled at equal intervals. The design also features a second transversal filter that compensates for deviations caused by sampling clock jitter, ensuring high-quality communication.
Career Highlights
Throughout his career, Akira Kanemasa has worked with notable companies such as NEC Corporation and Nippon Electric Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative technologies in echo cancellation.
Collaborations
Kanemasa has collaborated with talented individuals in the field, including Akihiko Sugiyama and Fujio Nakagawa. These partnerships have contributed to the advancement of his inventions and the overall progress in echo cancellation technology.
Conclusion
Akira Kanemasa's work in echo cancellation technology has significantly impacted the field of communication. His innovative patents and collaborations demonstrate his commitment to enhancing the quality of digital communication systems.