Headway Technologies Assigned Patent

Headway Technologies, Inc., Milpitas, CA, has been assigned a patent (10,762,916) developed by Wu, Yan, Cupertino, CA, for a “shared MAMR and HDI sensor/driver.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: ”A disk drive head assembly includes a spin torque oscillator (STO) situated between a main pole and a trailing shield. A head-disk interference (HDI) sensor is placed between the main pole and a read sensor shield. A trace is connected between a preamplifier and the head assembly for providing a first biasing voltage level to the spin torque oscillator (STO) and to the head-disk interference (HDI) sensor for determining resistance changes in the head-disk interference (HDI) sensor. Further, the preamplifier is configured for determining a resistance change in the head-disk interference (HDI) sensor based on a change in current through the head-disk interference (HDI) sensor. The spin torque oscillator (STO) and the head-disk interference (HDI) sensor are connected in parallel to two connectors from the two contacting pads on the preamplifier.”

The patent application was filed on March 5, 2019 (16/292,451).