Title:
METHOD FOR GENERATING A BINARY SIGNAL HAVING A PREDETERMINED SPECTRAL SHAPE
Document Type and Number:
WIPO Patent Application WO2002015183
Kind Code:
A3
Abstract:
The invention relates to a method for generating a primary binary signal having a predetermined spectral shape in a predetermined frequency range, in particular having a notch in the power spectrum in a predetermined frequency range. In order to avoid crosstalk between a primary binary signal and a secondary binary signal it is proposed according to the invention that data-words are modulated into channel-words forming the channel bitstream of the primary binary signal and that the modulation of the data-words is chosen such that the predetermined spectral shape of the channel bitstream of the primary binary signal is achieved by using an evaluation criterion based on a spectral weight function the shape of which is tailored to the spectral extent of the channel bitstream of a secondary binary signal. The invention is in particular useful for generating a primary binary signal which is used in the lead-in area of an optical record carrier where a wobble is used in the secondary binary signal for storing a wobble key. The invention relates further to a device for generating the channel bitstream of a primary binary signal, to a primary binary signal and to a record carrier for storing such a binary signal.
Inventors:
COENE WILLEM M J M
OOSTVEEN JOB C
SPRUIJT ALOYSIUS M J M
VAN ROOSMALEN PAULUS R J
DE BOER JAN H
OOSTVEEN JOB C
SPRUIJT ALOYSIUS M J M
VAN ROOSMALEN PAULUS R J
DE BOER JAN H
Application Number:
PCT/EP2001/008809
Publication Date:
May 16, 2002
Filing Date:
July 31, 2001
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
International Classes:
G11B7/0045; G11B7/007; G11B20/00; G11B20/10; G11B20/14; G11B20/18; H03M5/14; H03M13/31; (IPC1-7): G11B20/00; G11B20/18; H03M13/31; H03M5/14
Foreign References:
| US5682365A | 1997-10-28 |
Other References:
K.A. SCHOUHAMER IMMINK: "Coding Techniques for Digital Recorders", 1991, PRENTICE HALL, XP002192563
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