US 2003/0152007 A1 · Disk recording system by data reading and straightforward conversion to digital data

Abstract

EFM signals including margin bits read from a CD are passed to an EFM copy circuit. After cutting one bit from the margin bits, the EFM copy circuit stores the EFM signals with the margin bits into a buffer. The EFM copy circuit reads the EFM signals including the margin bits from the buffer, decompresses the margin bits, and supplies the EFM signals with the decompressed margin bits to a write strategy circuit. Then, the EFM signals are written onto a CDR from the recording start position on the CDR, which is detected by the information from a WBL detection circuit. The start address of the EFM data to be read from the buffer is located from subcode transferred from a subcode detaching circuit to the EFM copy circuit. In this manner, the content of a CD with copy guard protection can be copied to another disk.

Claims9

Dependent claims

A disk recording system which generates write signals from signals read from a disk having content and writes the write signals onto a recording disk medium, comprising:

a circuit for digitizing the signals read from said disk in a manner that the signals remain intact, thus converting the read signals into digital data including margin bits;
and
a circuit for converting the digital data into write signals;
and
a circuit for recording the write signals onto the recording disk medium.

2 more elements

Dependencies are inferred from the claim text.

Disk recording system by data reading and straightforward conversion to digital data

Life of this patent

Disk recording system by data reading and straightforward conversion to digital data

Life of this patent

Abstract

Claims9