US Patent Issued to Western Digital Technologies on April 21 for "Data storage device comprising dual channel preamp circuit" (Japanese, American Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. RE50,873, issued on April 21, was assigned to Western Digital Technologies Inc. (San Jose, Calif.).

"Data storage device comprising dual channel preamp circuit" was invented by Junzo Noda (Fujisawa, Japan), John T. Contreras (Palo Alto, Calif.) and Masahito Kobayashi (Fujisawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A data storage device is disclosed comprising a top head actuated over a top surface of a first disk, a bottom head actuated over a bottom surface of the first disk, a top head actuated over a top surface of a second disk, and a bottom head actuated over a bottom surface of the second disk. A dual channel preamp circuit is couple...