Company Filing History:
4 out of 21,351 
1 out of 177 
Years Active: 2000-2003
Title: Hisao Katoh: Innovator in Information Regeneration Technology
Introduction
Hisao Katoh is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of information regeneration technology, holding a total of 4 patents. His work focuses on enhancing the performance and reliability of digital data processing systems.
Latest Patents
His latest patents include an information regenerating apparatus and method. This innovative apparatus converts input data into digital data using an A/D converter synchronized with a regenerated clock. The system detects a zero-crossing signal of the digital data and calculates a phase shift quantity to derive target oscillation frequency data. This data is then converted into analog form through a D/A converter, allowing for the generation of a regenerated clock. The digital data is subsequently decoded to regenerated data in a Viterbi decoder, ensuring high performance and uniform characteristics by utilizing digital circuits. Another notable patent is a data phase locked loop circuit, which incorporates a phase comparator circuit designed to minimize the effects of offset and jitter. This circuit includes a Delay Locked Loop for outputting a delay signal based on the oscillation frequency of a voltage-controlled oscillator.
Career Highlights
Throughout his career, Hisao Katoh has worked with notable companies such as Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Electric Engineering Company, Limited. His experience in these organizations has contributed to his expertise in developing advanced technological solutions.
Collaborations
Hisao Katoh has collaborated with esteemed colleagues, including Yoshifumi Imanaka and Takeyasu Nakai. These partnerships have fostered innovation and the exchange of ideas in the field of information technology.
Conclusion
Hisao Katoh's contributions to information regeneration technology exemplify his dedication to advancing digital data processing systems. His innovative patents and collaborative efforts highlight his significant impact on the industry.