Company Filing History:
Years Active: 1991-1993
Title: Cheng C Shih: Innovator in Local Area Network Technologies
Introduction
Cheng C Shih is a notable inventor based in Rancho Cordova, CA (US). He has made significant contributions to the field of local area networks (LANs) with a total of 3 patents to his name. His work focuses on enhancing the efficiency and functionality of network communication systems.
Latest Patents
One of Cheng's latest patents is for an "Interfacing unit for local area networks." This invention describes a LAN that incorporates a 10Base-T media attachment unit (MAU) designed to couple an attachment unit interface (AUI) to a twisted pair link. The MAU not only meets the standards set forth in the proposed supplement to IEEE standard 802.3 for LANs but also features an interface that auto-engages when activity is detected on the twisted pair link. Additionally, it isolates its AUI port when there is a lack of activity, allowing for seamless operation with an Ethernet type MAU without manual intervention.
Another significant patent is for a "Digital data line driver." This invention presents a cost-effective, low power, and low distortion digital data line driver capable of operating from a limited voltage source while maintaining wide output voltage swings. The line driver boasts noise immunity similar to that of a fully differential input device, all while avoiding the complexity of traditional common-mode feedback circuitry. It provides low distortion output with low output impedance, maintaining its impedance value at frequencies up to four times the Nyquist rate.
Career Highlights
Cheng C Shih is currently employed at Level One Communications, Inc., where he continues to innovate in the field of network technologies. His work has been instrumental in advancing the capabilities of LAN systems, making them more efficient and user-friendly.
Collaborations
Throughout his career, Cheng has collaborated with notable colleagues such as Dave Wong and Haim Shafir. These partnerships have contributed to the development of cutting-edge technologies in the networking domain.
Conclusion
Cheng C Shih is a prominent inventor whose work in local area network technologies has made a lasting impact. His innovative patents reflect his commitment to enhancing communication systems, and his contributions continue to shape the future of networking.