Keenan Terrell O'Brien

Title: Keenan Terrell O'Brien: Innovator in Signal Processing Technologies

Introduction

Keenan Terrell O'Brien is a notable inventor based in Longmont, Colorado. He has made significant contributions to the field of signal processing, holding a total of 3 patents. His work focuses on optimizing test patterns and generating filter tap weights, which are crucial for enhancing the performance of various media and communication systems.

Latest Patents

One of O'Brien's latest patents is titled "Test pattern optimization for LDPC based flawscan." This invention describes a method for producing a Low-Density Parity-Check (LDPC) encoded test pattern for media in an LDPC-based drive system. The method involves adding error detection code data to a predominantly zero bit test pattern and incorporating additional zero bits to achieve a desirable length. The resulting test pattern can be scrambled to create an effective flaw detection test pattern, which is then encoded with an LDPC code or other error correction codes while maintaining the run length constraints of the data pattern.

Another significant patent is the "Method and apparatus for generating filter tap weights and biases for signal dependent branch metric computation." This invention provides a method and apparatus for determining a plurality of filter tap weights or biases for a noise predictive filter. The filter is used to generate one or more signal-dependent branch metrics. The filter tap weights are adaptively accumulated for each possible data condition, allowing for effective updates based on the current received data.

Career Highlights

Throughout his career, O'Brien has worked with prominent companies in the technology sector. He has been associated with Agere Systems Inc. and Avago Technologies General IP (Singapore) Pte. Ltd. His experience in these organizations has contributed to his expertise in signal processing and innovation.

Collaborations

O'Brien has collaborated with notable professionals in his field, including Richard Rauschmayer and Jefferson E Singleton. These collaborations have likely enriched his work and contributed to the development of his patented technologies.

Conclusion

Keenan Terrell O'Brien is a distinguished inventor whose work in signal processing has led to valuable innovations. His patents reflect a commitment to advancing technology in media and communication systems. O'Brien's contributions continue to influence the industry and inspire future innovations.