Location History:
- Yokohama, JP (1993)
- Tokyo, JP (2002)
- Fujisawa, JP (2006 - 2012)
Company Filing History:
Years Active: 1993-2012
Title: Kazunaga Ikeda: Innovator in Digital Signal Processing
Introduction
Kazunaga Ikeda is a prominent inventor based in Fujisawa, Japan. He has made significant contributions to the field of digital signal processing, holding a total of 8 patents. His work focuses on methods and apparatuses for encoding and decoding digital signals, which are crucial in various technological applications.
Latest Patents
Ikeda's latest patents include innovative methods for encoding and decoding digital signals. One notable invention involves a down sampler that reduces the sampling frequency of a digital signal from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is then compression encoded and output as a main code Im. An up sampler subsequently converts a partial signal corresponding to the main code Im back to the original sampling frequency of 96 kHz. This process generates an error signal between the up sampled signal and the input digital signal. An array converting and encoding unit then converts bits of sample chains of the error signal, outputting an error code Pe. On the decoding side, a high fidelity reproduced signal is obtained based on both the main code Im and the error code Pe, or a reproduced signal can be derived from the main code Im alone.
Career Highlights
Kazunaga Ikeda is currently employed at Nippon Telegraph and Telephone Corporation, where he continues to develop cutting-edge technologies in digital signal processing. His expertise and innovative approach have positioned him as a key figure in his field.
Collaborations
Ikeda has collaborated with notable colleagues, including Takehiro Moriya and Akio Jin. Their combined efforts contribute to the advancement of technology in digital signal processing.
Conclusion
Kazunaga Ikeda's contributions to digital signal processing through his patents and work at Nippon Telegraph and Telephone Corporation highlight his role as an influential inventor. His innovative methods for encoding and decoding digital signals continue to impact the technological landscape.