Patent ID: 7516392
Filing Date: 2009-04-07
Classification: G11B

Abstract:
1. A recording apparatus comprising: a first run length encoder for implementing run length modulation of a first information signal to convert the first information signal into a second information signal of a prescribed run-length-limited code while subjecting the second information signal to DSV control and adding a sync signal to the second information signal to get a third information signal; a converter for converting the third information signal generated by the first run length encoder into an NRZI signal including information code words; a parity generator for generating original parity signals in response to the information code words in the NRZI signal according to a prescribed error correction scheme, and combining the information code words and the original parity signals to form a first parity-added signal; a second run length encoder for implementing run length modulation of only the original parity signals in the first parity-added signal to get modulated parity signals of the prescribed run-length-limited code, and thereby converting the first parity-added signal into a second parity-added signal inclusive of the information code words and the modulated parity signals while subjecting the second parity-added signal to DSV control; and means for recording the second parity-added signal generated by the second run length encoder on a recording medium.