Howell, Thomas D

Publications & Presentations

Refereed publications

T. Howell, J. Lyness, On a conjecture in multidimensional quadrature, J. Comp. Phys., 21, No. 3, July, 1976.

T. Howell, Partitioning using PAQ, in Sparse Matrix Computations,  Academic Press, New York, 1976.

T. Howell, Global properties of tensor rank, Lin. Alg. Appl., 22, 9-23, 1978.

M. Canon, D. Fritz, J. Howard, T. Howell, M. Mitoma, J. Rodriguez-Rosell, A virtual machine emulator for performance evaluation, Comm. of the ACM, Vol. 23, No. 2, Feb. 1980.

D. McCown, L. Barbosa, T. Howell, Comparative aspects of AC bias recording, IEEE Trans. Magn., Vol. 17, No. 6, Nov. 1981.

T. Howell, Analysis of correctable errors in the IBM 3380 disk file, IBM J. Res. Dev., Vol. 28, No. 2, March 1984.

T. Howell, P. Kasiraj, J. Best, F. Chu, M. Yerry, A study of disk noise statistics, IEEE Trans. Magn., Vol. 22, No. 5, September 1986.

D. Palmer, P. Ziperovich, R. Wood, T. Howell, Identification of nonlinear write effects using pseudorandom sequences, IEEE Trans. Magn., Vol. 23, No. 5, September 1987.

I. Megory-Cohen, T. Howell, Exact field calculations for asymmetrical finite-pole-tip ring heads, IEEE Trans. Magn., Vol. 24, No. 3, May, 1988.

T. Howell, Statistical properties of selected recording codes, IBM J. Res. Dev., Vol. 33, No. 1, January, 1989.

D. Larson, J. Ashley, T. Howell, On the minimum length error event of minimum Euclidean weight, IEEE Trans. Info. Theory., Vol. 34, No. 5, September, 1989.

Lambert, S.E.; Sanders, I.L.; Howell, T.D.; McCown, D.; Patlach, A.M.; Krounbi, M.T., Reduction of edge noise in thin film metal media using discrete tracks, IEEE Trans. Magn. , Vol. 25, No. 5 , September 1989.

D. Messerschmitt, L. Barbosa, T. Howell, A study of sampling detectors for magnetic recording, Proc. 23rd Asilomar Conf. on Signals Systems and Computers, December, 1989.

R. Haeb, D. Rugar, T. Howell, G. Coleman, Coding and signal processing for a magneto-optic resonant bias coil overwrite experiment, IEEE International Conf. on Comm., April, 1990.

T. Howell, Coding and data detection in a gigabit per square inch magnetic recording system, Proc. IEEE Int. Work. on Info. Th., June, 1990.

T. Howell, D. McCown, T. Diola, Y. Tang, K. Hense, R. Gee, Error rate performance of experimental gigabit per square inch recording components, IEEE Trans. Magn., Vol. 26, No. 5, September, 1990.

P. Siegel, C. Shung, T. Howell, H. Thapar, Exact bounds for Viterbi detector path metric differences, Proc. IEEE Intl. Conf. on Acoustics Speech and Sig. Proc., May, 1991.

G. Mian, T. Howell, Determining a signal to noise ratio for an arbitrary data sequence by a time domain analysis, IEEE Trans. Magn., Vol. 29, No. 6, November 1993.

G. Mian, J. Potter, T. Howell, Effects of media orientation and intergranular exchange coupling on nonlinear transition shift, IEEE Trans. Magn., Vol. 29, No. 6, November 1993.

T. Howell, W. Abbott, K. Fisher, Advanced channels for magnetic disk drives, IEEE Trans. Magn., Vol. 30, No. 6, November 1994.

M. Vea, T. Howell, A soft error rate model for predicting off-track performance, IEEE Trans. Magn., Vol. 31, No. 1, January, 1995.

T. Howell, P. McEwen, A. Patapoutian, Getting the information in and out: The channel, J. Appl. Phys., Vol. 87, No. 9, May, 2000.

Patents

F. Dolivo, T. Howell, G. Ungerboeck, Method and apparatus for decoding the output of a partial response class-IV communication or recording-device channel, U.S. Patent 4,571,734, 1986.

F. Dolivo, T. Howell, G. Ungerboeck, Decoding the output of a partial response class IV communication or recording device channel, U.S. Patent 4,644,564, 1987.

N. Davie, M. Hassner, T. Howell, R. Karabed, P. Siegel, Method and apparatus for asymmetrical RLL coding, U.S. Patent 4,949,196, 1990.

H. Nguyen, T. Howell, B. Peterson, Cross-checking for on-the-fly Reed Solomon error correcting code, U.S. Patent 5,422,895, 1995.

Patent publications

M. Canon, J. Howard, T. Howell, M. Mitoma, J. Rodriguez-Rosell, A virtual machine emulatoion facility for performance evaluation, IBM Tech. Discl. Bull., Vol. 21, No. 7, Dec. 1978.

T. Howell, A pattern for buried servo, IBM Tech. Discl. Bull., Vol. 23, No. 1, June, 1980.

T. Howell, A. Patel, P. Siegel, Improved dibit (2,8) code, IBM Techn. Discl. Bull., Vol. 29, No. 2, July, 1986.

T. Howell, D. McCown, A. Patel, P. Siegel, Data detector and clock recovery circuit for dibit (2,8) code, IBM Techn. Discl. Bull., Vol. 29, No. 2, July, 1986.

T. Howell, R. Karabed, P. Siegel, Difference metric decoder for interleaved biphase trellis code, IBM Techn. Discl. Bull., Vol. 31, No. 7, Dec. 1988.