Company Filing History:
Years Active: 1989
Title: Michael J Hassel: Innovator in Data Storage Technology
Introduction
Michael J Hassel is a notable inventor based in Milpitas, CA (US). He has made significant contributions to the field of data storage technology, holding 2 patents that showcase his innovative approach to enhancing data capacity and efficiency.
Latest Patents
Hassel's latest patents include a "Modular unitary disk file subsystem with differing density zones." This invention aims to achieve higher data storage capacity in a self-contained fixed rotating disk expansion board subsystem, which is designed for a single electronics circuit board accessory slot of a host computer. The system can realize up to 42 megabytes of formatted storage on two 95-millimeter disks. The design employs a plural zone arrangement, where each zone contains data tracks that allow user blocks to be recorded and read out at a unique data rate. An improved phase-locked loop within the data separator utilizes a separate voltage-controlled oscillator for each zone, along with a common charge pump to generate control voltages. This innovation ensures that only the selected oscillator's frequency is varied during readback and data separation operations. Additionally, a dual latch circuit extends the margin of a data window in the data separator, ensuring that legitimate data bits are accurately latched for separation. A single microprocessor supervises the subsystem's operations and calculates physical sector locations within each zone based on logical sector location data provided by the host computer.
Career Highlights
Michael J Hassel is currently associated with Plus Development Corporation, where he continues to push the boundaries of data storage technology. His work has been instrumental in developing systems that enhance data management and retrieval processes.
Collaborations
Some of his notable coworkers include Ian C Felix and Claude E Camp, who have collaborated with him on various projects within the field.
Conclusion
Michael J Hassel's contributions to data storage technology through his innovative patents reflect his commitment to advancing the industry. His work continues to influence the way data is stored and accessed in modern computing systems.