Daniel Scott Fisher

Title: The Innovations of Daniel Scott Fisher

Introduction

Daniel Scott Fisher is a notable inventor based in Longmont, Colorado. He holds a total of 5 patents that showcase his contributions to the field of disc drive technology. His work has significantly impacted the efficiency and reliability of data storage systems.

Latest Patents

One of Fisher's latest patents is the "Full slip defect management system using track identification." This invention involves a disc drive that includes a base and a disc rotatably attached to the base. The controller for the disc drive utilizes a system for mapping logical block addresses to actual locations on the disc. It stores the number of skipped or defective sectors that occur prior to a target cylinder in a cylinder skip table. The system estimates a starting cylinder location for the selected logical block address and determines the number of skipped defective sectors that have occurred prior to the cylinder start. This information is crucial for adjusting the actual location on the track and determining if a track seek to another track is necessary.

Another significant patent is the "Variable format timing runout compensation." This method identifies and compensates for the cumulative effect of once per revolution (OPR) timing errors by modulating the size of an inter-sector runout (ISR) field between servo sectors. The ISR field is part of an inter-sector gap (ISG) field. The method begins by increasing the nominal data field frequency to ensure adequate data field tolerances at the fastest portion of the timing OPR error curve. The ISR field is varied rotationally based on a calibration table that identifies the location of the disc drive head and compensates for the appropriate timing OPR error at that location.

Career Highlights

Fisher has worked with prominent companies in the technology sector, including Seagate Technology Incorporated and Seagate Tech LLC. His experience in these organizations has allowed him to develop and refine his innovative ideas in data storage technology.

Collaborations

Throughout his career, Fisher has collaborated with talented individuals such as Stanton MacDonough Keeler and John A Mount. These partnerships have contributed to the advancement of his inventions and the overall progress in the field.

Conclusion

Daniel Scott Fisher's contributions to disc drive technology through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the efficiency of data storage systems, making him a significant figure in the field of technology.