Multiple positioner data storage device

• US 8,028,311 B2
• Filed: 10/17/2005
• Issued: 09/27/2011
• Est. Priority Date: 10/18/2004
• Status: Expired due to Fees

• Current Assignee: Cloverleaf Data Systems, Inc.
• Original Assignee: Paul A. Gilovich
• Inventors: Gilovich, Paul A.
• Primary Examiner(s): CAO, ALLEN T
• Application Number:
  US11/665,104
• Publication Number:
  US 20090013342A1
• Time in Patent Office: 2,171 Days
• Field of Search: 720/699, 720/672, 720/619, 720/711, 720/695, 720/615, 360/264.4, 360/265.2, 360/265.6, 360/264.3, 360/246.7, 360/266.6
• US Class Current: 720/699
• CPC Class Codes: G11B 25/043 using rotating discs
• CPC Class Codes: G11B 33/121 the apparatus comprising a single recording/reproducing device
• CPC Class Codes: G11B 5/4813 Mounting or aligning of arm assemblies, e.g. actuator arm supported by bearings, multiple arm assemblies, arm stacks or multiple heads on single arm G11B5/484 takes precedence
• CPC Class Codes: G11B 5/4833 Structure of the arm assembly, e.g. load beams, flexures, parts of the arm adapted for controlling vertical force on the head G11B5/484 takes precedence
• CPC Class Codes: G11B 5/5569 details of specially adapted mobile parts, e.g. electromechanical control devices motors in general H02K
• CPC Class Codes: G11B 5/5578 Multiple actuators addressing the same disk, e.g. to improve data rate or access rate

Abstract

An optical data storage device having at least two removable rotatable disks and at least one actuator assembly for writing data onto each side of the disks and reading the data recorded on each side of the disks is provided. The disks are rotated by a dual stator/dual rotor spindle motor. The actuators are driven by a dual coil/dual moving magnet actuator.

Claims

1. A data storage device comprising:

a first fixed disk;

at least two removable disks, each of the first fixed disk and two removable disks rotating about the same shaft; and

at least two positioners reading data from and writing data to each side of the fixed disk and the removable disks.

2. The data storage device of claim 1 wherein the at least two removable disks are affixed at each end to a single shaft driven by a dual stator/rotor spindle motor.

3. The data storage device of claim 1 wherein the first fixed disk and each removable disk is affixed to a single shaft driven by mechanism selected from the group consisting of a dual stator/rotor spindle motor, single shaft, and a quadruple stator/rotor spindle motor, single shaft.

4. The data storage device of claim 3 and further comprising:

a second fixed disk.

5. The data storage device of claim 4 and further comprising:

a third fixed disk; and

a fourth fixed disk.

11. The data storage device of claim 1 wherein the positioners allow multiple input/output data streams in parallel.

12. The data storage device of claim 1 wherein the positioners are rotated by dual coil/dual moving magnet actuators.

6. A data storage device comprising:

a first fixed disk;

a first removable disk; and

a first positioner reading data from and writing data to a first side of the first fixed disk;

a second positioner reading data from and writing data to a second side of the first fixed disk;

a third positioner reading data from and writing data to a first side of the first removable disk; and

a fourth positioner reading data from and writing data to a second side of the first removable disk;

wherein each of the disks are rotatable along a single first shaft; and

wherein each of the positioners is rotatable along a single second shaft.

7. The data storage device of claim 6 and further comprising:

additional fixed disk positioners for reading data from and writing data to each side of the first fixed disk; and

additional removable disk positioners for reading data from and writing data to each side of the first removable disk;

wherein the additional fixed disk positioners and the additional removable disk positioners are mounted for rotation along a single common shaft.

8. The data storage device of claim 6 and further comprising:

a second removable disk with a positioner for reading data from and writing data to a first side of the second removable disk and a positioner for reading data from and writing data to a second side of the second removable disk;

wherein the second removable disk is mounted for rotation the single first shaft.

9. The data storage device of claim 8 and further comprising:

additional removable disk positioners for reading data from and writing data to each side of the second removable disk.

10. The data storage device of claim 6 and further comprising:

multiple fixed disks rotatable along the single first shaft.