Magnetic reproducing apparatus

Details Magnetic reproducing apparatus Magnetic reproducing apparatus

1992-07-29

1994-11-01

Hajec, Donald

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Head amplifier circuit

360 65, G11B 509, G11B 5035

Patent

active

053611748

ABSTRACT:
Respective regenerative signals from magnetic heads 1A, 1B are combined into one system through a changeover switch 9. After the reproducing characteristic is compensated by using a filter 4 serving as an equalizer, that combined signal is decoded at a decoder 5. An adaptive control unit 7 adjusts (modifies) the characteristic of the filter 4 so that it becomes optimum on the basis of a decode error (residual) at the decoder 5 and an input to the filter 4. The adaptive control unit 7 carries out an adaptive processing in a time divisional manner for every regenerative signal of respective magnetic heads 1A, 1B to send filter coefficients for the respective magnetic heads 1A, 1B to the filter 4. Thus, since the adaptive processing is carried out in a time divisional manner by the filter 4 and the adaptive control unit 7, the circuit scale can be reduced, resulting in low cost.

REFERENCES:
patent: 4580176 (1986-04-01), Graves et al.
patent: 5057944 (1991-10-01), Ozaki et al.
patent: 5060088 (1991-10-01), Dolivo et al.
patent: 5150379 (1992-09-01), Baugh et al.
Design of Automatic Equalizer Including a Decoder of Error-Correction Code, pp. 1142-1146, Kolino et al.
Kato et al. "An Adaptive Equalizer for R-Dat" (Jun. 9, 1989) IEEE Trans. on Consumer Elec. vol. 35, No. 3, Aug. 1989.
Patent Abstracts of Japan, vol. 15, No. 383 (E-1116) 27 Sep. 1991 & JP-A-31 53 185 (Canon Inv.) 1 Jul. 1991.
Patent Abstracts of Japan vol. 14, No. 88 (P-1008) 19 Feb. 1990 & JP-A--12 96 466 (Sony Corp.) 29 Nov. 1989.

Affiliated with

Also associated with

Rating

Magnetic reproducing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1805920