Data recording method and data recording apparatus using a digit

Details Data recording method and data recording apparatus using a digit Data recording method and data recording apparatus using a digit

1993-12-23

1995-09-19

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

341 59, H03M 700

Patent

active

054519438

ABSTRACT:
A method of recording data in a recording medium is performed by using an RLL (Run Length Limited) Code represented by (d,k,m,n)=(1,7,2,3). When it is assumed that X is an indeterminate bit which is determined by the data, a one-byte resync signal with a pattern represented by "X01000000001" is periodically inserted into the data. Then, the data into which the resync signal is inserted is recorded on the recording medium. A method of recording data in a recording medium in accordance with NRZI (Non Return to Zero Inverted) recording is performed by using an RLL code represented by (d,k,m,n)=(1,7,2,3). When it is assumed that X is an indeterminate bit which is determined by the data, one of one-byte resync signals represented by patterns "X01000000001" and "X01000000101" is selected such that a DSV (Digital Sum Value) of a coded signal is decreased. The selected resync signal is periodically inserted into the data. Then, the data into which the resync signal is inserted is recorded on the recording medium.

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C. Shinn, II, "Charge Constrained (1,7) Code for Magneto Optic Recording", Topical Meeting on Optical Data Storage, pp. 115-117 (Mar. 1987).
"Fault-Tolerant Sync Byte for Run-Length-Limited Codes", IBM Technical Disclosure Bulletin, vol. 20, No. 1, pp. 151-157 (Jun. 1986).

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