Rotary drum controller

Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Synchronizing moving-head moving-record recorders

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

360 75, G11B 5588

Patent

active

052315487

ABSTRACT:
A controller for a rotary drum comprising a measuring module which measures occurrence times of a drum frequency signal that repeatedly and periodically occurs per one revolution of the rotary drum. A divisional time producing module produces a plurality of divisional times obtained by adding successive integer multiples of a period reference for the drum frequency signal to an occurrence time of a phase reference signal that is used for internal signal processing. A rotary drum controlling module computes a plurality of phase errors, each determined by the difference between an occurrence time of the drum frequency signal and an associated divisional time, and controls the phase of the rotary drum based on the phase errors. Accordingly, the controller can quickly establish the desired synchronism of the rotary drum with the phase reference signal.

REFERENCES:
patent: 3038104 (1962-06-01), Wessels
patent: 4216419 (1980-08-01), van Dam et al.
patent: 5008763 (1991-04-01), Horino
Patent Abstracts of Japan, vol. 13, No. 203 (P-870), May 15, 1989 & JP-A-01 023 463 (Yamaha Corp.) Jan. 26, 1989.
Patents Abstracts of Japan, vol 11, No. 299 (P-621), Sep. 29, 1982 & JP-A-62 092 172 (Canon) Apr. 27, 1987.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Rotary drum controller does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rotary drum controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotary drum controller will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2346273

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.