Method and apparatus for detecting position of tape when recordi

Details Method and apparatus for detecting position of tape when recordi Method and apparatus for detecting position of tape when recordi

1987-04-03

1989-02-14

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 742, 360137, 242191, G11B 2734, G11B 2718, G11B 1518

Patent

active

048050539

ABSTRACT:
In recording and/or reproducing signals on a tape running between supply and take-up reels on which the tape is wound, the tape position is detected by initially determining the radii of the outer turns of the tape on the supply and take-up reels with the tape in a reference position, generating signal pulses in response to rotation of the reels for movement of the tape from the reference position, counting the numbers of such signal pulses generated during movement of the tape from the reference position to an arbitrary tape position, and calculating at least one of the radii of the outer turns of the tape on the supply and take-up reels for the arbitrary tape position on the basis of the corresponding radii for the reference tape position and the numbers of the signal pulses counted during movement of the tape from the reference position to the arbitrary tape position. The length along the tape from the reference tape position to the arbitrary tape position may also be calculated on the basis of the radii on the supply and take-up reels, respectively, for the reference tape position, and the numbers of signal pulses counted in correspondence to the revolutions of the supply and take-up reels, respectively, during movement of the tape from the reference position to the arbitrary tape position.

REFERENCES:
patent: 4280159 (1981-07-01), Nakayama
patent: 4347538 (1982-08-01), Klank
patent: 4381089 (1983-04-01), Kondo
patent: 4496117 (1985-01-01), Kashiwagi et al.
patent: 4644436 (1987-02-01), Unno

Affiliated with

Also associated with

Rating

Method and apparatus for detecting position of tape when recordi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for detecting position of tape when recordi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting position of tape when recordi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1370325