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Machine translation
1. (WO2005104107) METHOD AND DEVICE FOR TRACK COUNTING IN OPTICAL RECORDING MEDIA
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/104107    International Application No.:    PCT/EP2005/004064
Publication Date: 03.11.2005 International Filing Date: 16.04.2005
IPC:
G11B 7/005 (2006.01), G11B 7/007 (2006.01), G11B 7/085 (2006.01)
Applicants: THOMSON LICENSING [FR/FR]; 46 Quai A. le Gallo, 92100 Boulogne-Billancourt (FR) (For All Designated States Except US).
BÜCHLER, Christian [DE/DE]; (DE) (For US Only)
Inventors: BÜCHLER, Christian; (DE)
Agent: THIES, Stephan; Deutsche Thomson-Brandt GmbH, European Patent Operations, Karl-Wiechert-Allee 74, 30625 Hannover (DE)
Priority Data:
10 2004 019 692.3 20.04.2004 DE
Title (EN) METHOD AND DEVICE FOR TRACK COUNTING IN OPTICAL RECORDING MEDIA
(FR) PROCEDE ET DISPOSITIF PERMETTANT DE COMPTER DES PISTES DANS UN SUPPORT D'ENREGISTREMENT OPTIQUE
Abstract: front page image
(EN)The invention relates to the identification of the direction of the relative movement between a scanning beam of an optical scanner and the tracks of optical storage media. Use is made of the fact that the amplitude of the component TW of a track error signal TE, said component being brought about by wobble of the tracks, is maximal in the track center and minimal in the region between the tracks. A signal TW is thus present which does not assume its maxima and minima across the scanning location x at the same places as the track error signal TE. The invention describes devices and methods for determining the movement direction DIR of the scanning beam from the phase shift between the two signals.
(FR)L'invention concerne l'identification de la direction du mouvement relatif entre un faisceau de balayage d'un scanner optique et les pistes d'un support de stockage optique. Le fait que l'amplitude du composant TW d'un signal d'erreur de piste TE, le composant étant amené par balayage des pistes, est maximale dans le centre de la piste et minimale dans la région entre les pistes est mis en oeuvre. Un signal TW est, par conséquent, présent, lequel ne présente pas son maxima et son minima dans l'emplacement de balayage x au niveau des mêmes endroits que le signal d'erreur de piste TE. L'invention concerne également des dispositifs et des procédés permettant de déterminer la direction du mouvement DIR du faisceau de balayage à partir du décalage de phase entre les deux signaux.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)