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1. WO1996038838 - MAGNETIC REPRODUCTION APPARATUS PROVIDED WITH A CROSS-TALK REDUCTION SYSTEM

Publication Number WO/1996/038838
Publication Date 05.12.1996
International Application No. PCT/IB1996/000477
International Filing Date 21.05.1996
IPC
G11B 5/008 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
008Recording on, or reproducing or erasing from, magnetic tapes or wires
G11B 5/02 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
02Recording, reproducing or erasing methods; Read, write or erase circuits therefor
G11B 20/24 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
24for reducing noise
CPC
G11B 20/24
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
24for reducing noise
G11B 5/0086
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
008Recording on, or reproducing or erasing from, magnetic tapes, ; sheets, e.g. cards,; or wires
00813magnetic tapes
00847on transverse tracks
0086using cyclically driven heads providing segmented tracks
G11B 5/02
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
02Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
Applicants
  • PHILIPS ELECTRONICS N.V. [NL]/[NL]
  • PHILIPS NORDEN AB [SE]/[SE] (SE)
Inventors
  • FURUYA, Hideaki
Agents
  • VAN DER KRUK, Willem, L.
Priority Data
7/15845131.05.1995JP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MAGNETIC REPRODUCTION APPARATUS PROVIDED WITH A CROSS-TALK REDUCTION SYSTEM
(FR) APPAREIL DE REPRODUCTION MAGNETIQUE POURVU D'UN SYSTEME DE REDUCTION DES INTERFERENCES
Abstract
(EN)
It is to provide that a magnetic reproduction apparatus with a cross-talk reducing system for improving an S/N respect of a reproducing signal by reproducing (compensating) the cross-talk component. A distance between a first magnetic head (4) which has a plus azimuth angle and a second magnetic head (5) which has a minus azimuth angle is provided, so that a second head (5) can scan a track which is scanned before by a first head (4). Furthermore, a delaying circuit (10) for delaying a first reproduction signal of the first head (4), a first filter (4) for extracting a first cross-talk component from an output of the delaying circuit (10), a second filter (5) for extracting a second cross-talk component from a second reproduction signal of the second head (5), a first adder (12) for adding the second cross-talk component which is reversed a polarity and the output of the delaying circuit (10) and a second adder (14) for realizing an adder processing between the output of the delaying circuit which is reversed a polarity and the second reproduction signal.
(FR)
L'invention porte sur un appareil de reproduction magnétique pourvu d'un système de réduction des interférences et améliorant le rapport S/B du signal reproduit en reproduisant (compensant) la composante d'interférence. La distance entre une première tête magnétique (4) présentant un angle azimutal positif et une deuxième tête magnétique (5) présentant un angle azimutal négatif est calculée de manière à ce que la deuxième tête (5) puisse balayer une piste ayant été préalablement balayée par la première tête (4). L'appareil comporte de plus un circuit à retard (10) retardant le premier signal de reproduction de la première tête (4), un premier filtre (4) servant à extraire une première composante d'interférence du signal de sortie du circuit à retard (10), un second filtre (5) servant à extraire une deuxième composante d'interférence du second signal de reproduction de la deuxième tête (5), un premier additionneur (12) servant à additionner la deuxième composante d'interférence dont la polarité est inversée au signal de sortie du circuit à retard (10), et un second additionneur (14) destiné à effectuer une opération d'addition entre le signal de sortie du circuit à retard dont la polarité est inversée et le deuxième signal de reproduction.
Also published as
KR1019970700573
Latest bibliographic data on file with the International Bureau