Patents Assigned to PHS MEMS
  • Patent number: 6650496
    Abstract: A matrix array of recording heads, wherein each head is independent from another both in terms of its magnetic circuit and excitation conductors. Each individual head has a planar magnetic circuit and an helical coil wrapped around the lower part of the magnetic circuit. The matrix array is collectively fabricated using full thin film technology on non-magnetic substrates. Preferably, the heads are aligned in an oblique lattice with the write gaps aligned along rows and offset by a constant value along columns. Each individual head is connected to the control electronics through interconnects to the backside of the wafer, allowing independent control of the write parameters. The die forming the device is shaped on its edges and top surface to optimize head/medium positioning and minimize wear.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: November 18, 2003
    Assignees: PHS MEMS, Tandberg Data ASA
    Inventors: Jean-Pierre Nozieres, O. Girard, E. Saporito, L. Chiesi, Joern Raastad