Servo control method in the absence of tape control signals

Details Servo control method in the absence of tape control signals Servo control method in the absence of tape control signals

1991-05-31

1993-12-14

Zazworsky, John

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 723, G11B 1552, G11B 1518

Patent

active

052708845

ABSTRACT:
A servo control method in the absence control signals is comprised of a compare routine (L1) and a non-signal phase control routine (L2). The compare routine (L1) is carried out in such a manner that an envelope value detected by controlling a capstan motor is compared with a predetermined value, when the control pulse is not detected. The non-signal phase control routine (L2) is carried out in such a manner that the phase of the capstan motor is adjusted until a desirable state of video signals arrives by making a dummy phase error section generate a dummy phase error signal when the detected envelope value is smaller than the predetermined value. According to the present invention, a normal picture can be maintained even when no control signals are detected from the tape.

REFERENCES:
patent: 4104684 (1978-08-01), Wakami et al.
patent: 4338640 (1982-07-01), Yabu et al.
patent: 4409628 (1983-10-01), Frimet et al.
patent: 4532561 (1985-07-01), Kimura et al.
patent: 4613914 (1986-09-01), Kobori et al.

Affiliated with

Also associated with

Rating

Servo control method in the absence of tape control signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Servo control method in the absence of tape control signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Servo control method in the absence of tape control signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1710702