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8. Tanaka, S., et al., Characterization of magnetizing process for pre-embossed servo pattern of plastic<br />

hard disks, IEEE Trans. on Mag., 30, 4209, 1994.<br />

9. Ho, H.T. and Doan, T., Distortion effects on servo position error transfer function, IEEE Trans. on<br />

Mag., 33, 2569, 1997.<br />

10. Bergmans, J.W.M., Digital Baseband Transmission and Recording, Kluwar Academic Publishers,<br />

Dordrecht, 1996.<br />

11. Forney, G.D., Maximum-likelihood sequence estimation of digital sequences in the presence of<br />

intersymbol interference, IEEE Trans. on Info. Thy., 18, 363, 1972.<br />

12. Chevalier, D., Servo pattern for location and positioning of information in a disk drive, U.S. patent<br />

05,253,131, 1993.<br />

13. Leis, M.D., et al., Synchronous detection of wide bi-phase coded servo information for disk drive,<br />

U.S. patent 05,862,005, 1999.<br />

14. Patapoutian, A., Vea, M.P., and Hung, N.C., Wide biphase digital servo information detection, and<br />

estimation for disk drive using servo Viterbi detector, U.S. patent 05,661,760, 1997.<br />

15. Patapoutian, A., Optimal burst frequency derivation for head positioning, IEEE Trans. on Mag., 32,<br />

3899, 1996.<br />

16. Sacks, A.H., Position signal generation in magnetic disk drives, Ph.D. dissertation, Carnegie Mellon<br />

University, Pittsburgh, 1995.<br />

17. Patapoutian, A., Signal space analysis of head positioning formats, IEEE Trans. on Mag., 33, 2412,<br />

1997.<br />

18. Cahalan, D. and Chopra, K., Effects of MR head track profile characteristics on servo performance,<br />

IEEE Trans. on Mag., 30, 4203, 1994.<br />

19. Sacks, A.H. and Messner, W.C., MR head effects on PES generation: simulation and experiment,<br />

IEEE Trans. on Mag., 32, 1773, 1996.<br />

20. Cheung, W.L., Digital demodulation of a complementary two-frequency servo PES pattern, U.S.<br />

patent 06,025,970, 2000.<br />

21. Tuttle, G.T., et al., A 130 Mb/s PRML read/write channel with digital-servo detection, Proc. IEEE<br />

ISSCC’96, 64, 1996.<br />

22. Fredrickson, L., et al., Digital servo processing in the Venus PRML read/write channel, IEEE Trans.<br />

on Mag., 33, 2616, 1997.<br />

23. Yada, H. and Takeda, T., A coherent maximum-likelihood, head position estimator for PERM disk<br />

drives, IEEE Trans. on Mag., 32, 1867, 1996.<br />

24. Kimura, H., et al., A digital servo architecture with 8.8 bit resolution of position error signal for disk<br />

drives, IEEE Globecom’97, 1268, 1997.<br />

25. Patapoutian, A., Analog-to-digital converter algorithms for position error signal estimators, IEEE<br />

Trans. on Mag., 36, 395, 2000.<br />

26. Reed, D.E., et al., Digital servo demodulation in a digital read channel, IEEE Trans. on Mag., 34, 13,<br />

1998.<br />

34.5 Modulation Codes for Storage Systems<br />

Brian Marcus and Emina ∨<br />

Soljanin<br />

Introduction<br />

Modulation codes are used to constrain the individual sequences that are recorded in data storage<br />

channels, such as magnetic or optical disk or tape drives. The constraints are imposed in order to improve<br />

the detection capabilities of the system. Perhaps the most widely known constraints are the runlength<br />

limited (RLL(d, k))<br />

constraints, in which ones are required to be separated by at least d and no more than<br />

k zeros. Such constraints are useful in data recording channels that employ peak detection: waveform<br />

peaks, corresponding to data ones, are detected independently of one another. The d-constraint<br />

helps<br />

© 2002 by CRC Press LLC

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