Title:
ASYMMETRIC RUN LENGTH CONSTRAINTS FOR INCREASED RESOLUTION AND POWER MARGIN IN MAMMOS READ-OUT
Document Type and Number:
WIPO Patent Application WO2003049101
Kind Code:
A3
Abstract:
In the present invention asymmetric run length constraints with different minimum run lengths for first and second patterns representing binary data are introduced, like dm=0 for the first pattenr, i.e. shortest sequence of first patterns is equal to the bit period, and ds>0 for the second pattern, i.e. shortest sequence of second patterns is equal to d+1 bit periods. Thereby, the small "cost" of a reduced code rate will be more than compensated by a large increase in power margin.
Inventors:
VERSCHUREN COEN A (NL)
Application Number:
PCT/IB2002/005205
Publication Date:
December 31, 2003
Filing Date:
December 06, 2002
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
VERSCHUREN COEN A (NL)
VERSCHUREN COEN A (NL)
International Classes:
G11B11/105; G11B13/00; G11B20/10; G11B20/14; H03M5/14; (IPC1-7): G11B20/10; G11B11/105; G11B20/14; H03M5/14
Domestic Patent References:
| WO2002103692A1 | 2002-12-27 |
Foreign References:
| US6262950B1 | 2001-07-17 | |||
| EP0779623A2 | 1997-06-18 | |||
| EP0316084A2 | 1989-05-17 |
Other References:
BLOM P W M ET AL: "SPATIAL RESOLUTION OF DOMAIN COPYING IN A MAGNETIC DOMAIN EXPANSION READOUT DISK", IEEE TRANSACTIONS ON MAGNETICS, IEEE INC. NEW YORK, US, vol. 37, no. 5, PART 2, September 2001 (2001-09-01), pages 3860 - 3864, XP001083214, ISSN: 0018-9464
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