Doug Frisby

Title: The Innovations of Doug Frisby

Introduction

Doug Frisby is an accomplished inventor based in Nederland, Colorado. He is known for his significant contributions to the field of disk drive technology. His innovative approach has led to the development of a unique patent that addresses key challenges in hard disk drive performance.

Latest Patents

Doug Frisby holds a patent for a "Quiet high performance seek procedure for disk drives." This invention describes a seek procedure that significantly reduces acoustic noise while maintaining high performance and fast seek times. The procedure lowers peak acceleration for short seeks and ensures a smooth transition from a sine seek to an exponential arrival at the target track. It provides an error-free feedforward signal derived from a single sine table. The design incorporates a time domain sinusoid acceleration feedforward combined with a phase-plane trajectory controlled velocity, particularly near seek completion. The acceleration begins at zero, increasing to a maximum, decreasing to a minimum, and then increasing again until a computed switchpoint is reached. This switchpoint is determined in-situ, allowing for a smooth and continuous velocity transition from sinusoid to exponential. The velocity trajectory is computed from a look-up table and is implemented using conventional seek controller servo components and commercially available operation software.

Career Highlights

Doug Frisby has made notable strides in his career, particularly through his work at Esgw Holdings Limited. His expertise in disk drive technology has positioned him as a key player in the industry. His innovative patent reflects his commitment to enhancing the performance and efficiency of hard disk drives.

Collaborations

Doug has collaborated with various professionals in his field, including his coworker Jim Hargarten. Their combined efforts have contributed to advancements in disk drive technology and have fostered a collaborative environment for innovation.

Conclusion

Doug Frisby's contributions to disk drive technology through his innovative patent demonstrate his expertise and commitment to improving performance in the industry. His work continues to influence the development of quieter and more efficient hard disk drives.