Some content of this application is unavailable at the moment.
If this situation persist, please contact us atFeedback&Contact
1. (WO2015048677) GENERATING POSITION ERROR SIGNAL BASED ON DATA TRACKS FOR MAGNETIC DATA STORAGE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/048677 International Application No.: PCT/US2014/058116
Publication Date: 02.04.2015 International Filing Date: 29.09.2014
IPC:
G11B 5/55 (2006.01) ,G11B 5/596 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48
Disposition or mounting of heads relative to record carriers
54
with provision for moving the head into, or out of, its operative position or across tracks
55
Track change, selection, or acquisition by displacement of the head
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
48
Disposition or mounting of heads relative to record carriers
58
with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
596
for track following on discs
Applicants:
OBERG, Mats [US/US]; US (US)
BURD, Gregory [US/US]; US (US)
MARVELL WORLD TRADE LTD. [BB/BB]; L'Horizon Gunsite Road Brittons Hill, St. Michael, BB 14027, BB
Inventors:
OBERG, Mats; US
BURD, Gregory; US
Agent:
WIGGINS, Michael D.; US
Priority Data:
14/499,81929.09.2014US
61/884,55530.09.2013US
Title (EN) GENERATING POSITION ERROR SIGNAL BASED ON DATA TRACKS FOR MAGNETIC DATA STORAGE
(FR) GÉNÉRATION D'UN SIGNAL D'ERREUR DE POSITION D'APRÈS DES PISTES DE DONNÉES POUR UN STOCKAGE DE DONNÉES MAGNÉTIQUE
Abstract:
(EN) A hard disk drive circuit includes first and second inter-track interference detection modules. The first inter-track interference detection module is configured to generate a first measured inter-track interference value based on a first read signal from a first read sensor positioned over a magnetic medium. The second inter-track interference detection module is configured to generate a second measured inter-track interference value based on a second read signal from a second read sensor positioned over the magnetic medium. A position error signal generation module is configured to generate a position error signal based on the first measured inter-track interference value and the second measured inter-track interference value. An arm control module is configured to control rotation of an arm in response to the position error signal. The first read sensor and the second read sensor are located at a distal end of the arm.
(FR) Un circuit de commande de disque dur comprend des premier et second modules de détection d'interférence inter-pistes. Le premier module de détection d'interférence inter-pistes est configuré pour générer une première valeur d'interférence inter-pistes mesurée d'après un premier signal de lecture d'un premier capteur de lecture positionné sur un support magnétique. Le second module de détection d'interférence inter-pistes est configuré pour générer une seconde valeur d'interférence inter-pistes mesurée d'après un second signal de lecture d'un second capteur de lecture positionné sur le support magnétique. Un module de génération de signal d'erreur de position est configuré pour générer un signal d'erreur de position d'après la première valeur d'interférence inter-pistes mesurée et la seconde valeur d'interférence inter-pistes mesurée. Un module de contrôle de bras est configuré pour contrôler la rotation d'un bras en réponse au signal d'erreur de position. Le premier capteur de lecture et le second capteur de lecture sont situés à une extrémité distale du bras.
front page image
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)