198656 ⎘
Signal processing not specific to the method of recording or reproducing; Circuits therefor; Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein original, non-rewritable record carriers are recognised by trying to erase recorded data
Apparatus and method for recording and erasing user data on a recordable optical disc
#2Recording method, recording apparatus, reproducing method and reproducing apparatus
#3Limited use memory device with associated information