James R Hamstra

Title: Innovations of James R Hamstra

Introduction

James R Hamstra is a notable inventor based in Shorewood, MN (US). He has made significant contributions to the field of communication systems, holding a total of 15 patents. His work primarily focuses on physical layer (PHY) devices that enhance data transmission and reliability.

Latest Patents

Among his latest patents is a method and apparatus for repeating data. This invention describes a PHY device that can function as either a conventional PHY or as a repeater in a communication system. The PHY repeater supports four optional modes, which can be activated by programming control register bits with a microcontroller. These modes include passing all symbols, enabling a noise filter, passing violation symbols, and passing line states. When certain modes are enabled, the PHY device operates as a 'transparent' repeater, allowing errors in a data stream to be encoded and repeated without filtering to a downstream station. Additionally, it allows line states to be repeated without the need for station management software. A single repeater can couple two stations, or multiple repeaters can be connected to create multi-port repeater boxes for more reliable connections.

Another significant patent is the intelligent repeater functionality. This PHY device can also operate as a conventional PHY or as an intelligent repeater. Similar to the previous invention, it supports four optional modes that can be enabled through a microcontroller. During its operation as an intelligent repeater, the same modes are activated, allowing for the encoding and repeating of errors in a data stream without filtering. This intelligent repeater also facilitates the repetition of line states without requiring station management software.

Career Highlights

James R Hamstra is currently employed at National Semiconductor Corporation, where he continues to innovate in the field of communication technology. His work has had a profound impact on the reliability and efficiency of data transmission systems.

Collaborations

Throughout his career, Hamstra has collaborated with notable colleagues, including David C Brief and Desmond W Young. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

James R Hamstra's contributions to communication systems through his innovative patents have significantly enhanced data transmission reliability. His work continues to influence the industry and pave the way for future advancements.