Single loop servo-positioning systems having means for changing

Details Single loop servo-positioning systems having means for changing Single loop servo-positioning systems having means for changing

1991-09-23

1993-10-26

Psitos, Aristotelis

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 4429, 369 4435, 369 4428, 360 7806, 360 7814, G11B 7095

Patent

active

052572510

ABSTRACT:
A single loop servo is used for positioning a lens holding element with respect to an optical disk. The dynamic range of the error signal used in the positioning is dynamically frequency shifted such that the servo summing of the error signal with a reference signal (velocity reference) is always performed within the same dynamic range. This action simplifies circuit operation as the dynamic range of the error signal is compressed at high speeds. Two embodiments of the invention are described.

REFERENCES:
patent: 4217612 (1980-08-01), Matla et al.
patent: 4435797 (1984-03-01), Hsieh et al.
patent: 4510537 (1985-04-01), Yoshida et al.
patent: 4575776 (1986-03-01), Stephens et al.
patent: 4607201 (1986-08-01), Koenig
patent: 4839876 (1989-06-01), Fennema
patent: 4876679 (1989-10-01), Mukai
patent: 4914725 (1990-04-01), Belser et al.
patent: 4959823 (1990-09-01), Getreuer et al.

Affiliated with

Also associated with

Rating

Single loop servo-positioning systems having means for changing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single loop servo-positioning systems having means for changing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single loop servo-positioning systems having means for changing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-964762