Company Filing History:
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Years Active: 1994-2006
Title: The Innovations of Roger N. Kosaka
Introduction
Roger N. Kosaka is a prominent inventor based in Torrance, California, with a remarkable portfolio comprising four patents. His contributions to the field of electronics and digital signal processing stand out, showcasing innovative approaches in creating advanced digital-to-analog converters (DACs).
Latest Patents
One of Kosaka's latest inventions is the "Digitally Trimmed DAC Cell," which features a digitally trimmed current source. This novel current source includes a first circuit designed to generate a current in response to an applied voltage, utilizing a resistive network composed of multiple resistors. Furthermore, it boasts a second circuit responsible for supplying the control signal necessary for operation. The design incorporates a transistor to apply voltage across the resistive network, effectively generating the required current.
Another significant invention is the "Split Cell Bowtie Digital to Analog Converter and Method." This DAC includes an operational amplifier with an input terminal and multiple current paths linked to this input. It employs a series of current sources and a specialized arrangement that allows switchable coupling of currents from at least two cells, guided by an input signal. This innovative DAC configuration aims to mitigate distortion issues within digital-to-analog converters, particularly by addressing differential and integral nonlinearities without necessitating trimming.
Career Highlights
Throughout his career, Roger N. Kosaka has worked with renowned organizations such as Hughes Aircraft Company and Telasic Communication, Inc. His experience in these companies has undoubtedly enriched his expertise and technical skillset in the field of electronic innovations.
Collaborations
Kosaka has collaborated with notable colleagues, including Erick M. Hirata and Lloyd Frederick Linder. Their teamwork has likely fostered an innovative environment, contributing to the development of cutting-edge technologies in the industry.
Conclusion
Roger N. Kosaka's inventive spirit continues to drive advancements in digital signal processing and electronic engineering. His contributions through his patents have not only enhanced the functionality of digital-to-analog converters but also set new standards for future innovations in the field. As he progresses in his career, his work will undoubtedly inspire the next generation of inventors and engineers.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.