Track Centering Patents (Class 360/77.01)
- By nonmagnetic sensing (e.g., optical, capacitive) (Class 360/77.03)
- By memory storage of repeatable error or correction (Class 360/77.04)
- By servo signal component from carrier surface separate from information signal bearing surface (Class 360/77.05)
- Reproduced data signal used for tracking (Class 360/77.06)
- By tracking signal recorded on or immediately beneath surface (Class 360/77.07)