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Multiple actuator disk drive

  • US 5,223,993 A
  • Filed: 11/03/1989
  • Issued: 06/29/1993
  • Est. Priority Date: 11/03/1989
  • Status: Expired due to Fees
First Claim
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1. A disk drive, comprising:

  • a housing;

    a disk having first and second surfaces, each surface having a plurality of concentric tracks for storing data and embedded servo information;

    means for mounting said disk in said housing and for rotating said disk;

    four transducers for interacting with said disk to read data and servo information from and to record data on said tracks;

    first means for supporting and positioning a first one of said transducers adjacent to said first surface of said disk and for supporting and positioning a second one of said transducers adjacent to said second surface of said disk;

    second means for supporting and positioning a third one of said transducers adjacent to said first surface of said disk and for supporting and positioning a fourth one of said transducers adjacent to said second surface of said disk; and

    third means, responsive to said servo information, for controlling said first means to position said first one or said second one of said transducers over a selected one of said tracks on a corresponding one of said first and second surfaces, for controlling said second means to position said third one or said fourth one of said transducers over a selected one of said tracks on a corresponding one of said first and second surfaces, and for controlling the recording of data so that data is stored on the concentric tracks of said first surface until all of the concentric tracks on the first surface are filled with data and then stored on said second surface.

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