Company Filing History:
Years Active: 1988
Title: Pham Dan Tam: Innovator in Magnetic Disk Memory Technology
Introduction
Pham Dan Tam is a notable inventor based in Bagneux, France. She has made significant contributions to the field of magnetic disk memory technology. Her innovative approach has led to the development of a unique method and apparatus for controlling the displacement of a movable magnetic disk memory transducer head.
Latest Patents
Pham Dan Tam holds a patent for a method of and apparatus for controlling the displacement of a movable magnetic disk memory transducer head. This invention involves a DC motor that drives the transducer head between a position near the disk periphery and an area where data is located. During this process, the head is lowered from an idle to a hovering position. The motor is supplied with a current impulse that has a predetermined polarity, amplitude, and duration. The polarity of this impulse is opposite to that of the current applied while the head is being driven. The duration and amplitude are designed to ensure that the motor's angular velocity reaches zero at the end of the current pulse. Subsequently, a ramping voltage is applied to prevent overshoot and oscillation of the head relative to the disk face.
Career Highlights
Pham Dan Tam is currently employed at Cii Honeywell Bull, where she continues to innovate in her field. Her work has been instrumental in advancing the technology used in magnetic disk memory systems.
Collaborations
She has collaborated with notable colleagues, including Daniel Carteau and Jean-Jacques Couette, contributing to various projects and enhancing her expertise in the field.
Conclusion
Pham Dan Tam's contributions to magnetic disk memory technology exemplify her innovative spirit and dedication to advancing engineering solutions. Her patent reflects her commitment to improving the efficiency and functionality of data storage systems.