An efficient decoding strategy of 2D-ECC for optical recording systems

Two-dimensional error correction codes (2DECCs) have been the cornerstone of all three generations of optical recording - CD, DVD and BD. Research into powerful error correction methods is paramount for the development of high-capacity optical recording systems. A Reed-Solomon product-code (RS-PC) for DVD systems performs error and erasure decoding by giving and taking erasure information between two ECCs. In this paper, we will present a new error correction method that performs erasure decoding using the only erasure information supplied from a modulation code decoder - more specifically, the EFMPlus code for DVD systems. We will evaluate the decoding efficiency of the new error correction method under a channel environment with various error types.