Patent ID: 8281225

Claim:
An apparatus for recording digital data on a digital versatile disk (DVD), the apparatus comprising: a memory device for temporarily storing data to be recorded on the DVD; an ID generation circuit for adding an ID and IED of the ID for each of a plurality of data sectors, an EDC generation circuit for adding EDC of the data to each of the data sectors; a first scramble circuit for scrambling the data in data sector units; an ECC encoding circuit for adding PI parity and PO parity to the scrambled data in sector units and ECC encoding the added data; and a second scramble circuit for separately reading main data, the ID, IED, EDC parity, and ECC parity from the memory device and scrambling the read data, wherein additional information besides the main data included in the ECC encoded and scrambled data is stored in the memory device and, when the main data are read from the memory device to perform EFM on the main data, the address information, the parity information and the main data stored in the memory device are read and scrambled by the second scramble circuit.