Patent ID: 6967909

Claim:
A method of recording, substantially contiguously, an earlier record information signal and, subsequently, a later record information signal on a record carrier, each record information signal representing at least one information unit, said record carrier having a recording track which comprising pre-formed armed track position information indicative of predefined locations for consecutively recording information units, said method comprising the steps: generating, from the earlier record information signal, an earlier modulated signal having at least one error correction code block, each error correction code block corresponding to one information unit and comprising successive frames, each frame including a synchronizing signal; scanning said recording track and recording the earlier modulated signal, while controlling such recording so as to maintain a substantially fixed relationship between the track position information and the synchronizing signals of the earlier modulated signal; generating, from the later record information signal a later modulated signal having at least one error correction code block, each error correction code block corresponding to one information unit and comprising successive frames, each frame including a synchronizing signal; adding a preceding information signal to the later modulated signal, said preceding information signal containing no synchronizing signal so as to obtain a first predetermined distance between the beginning of the preceding information signal and a first synchronizing signal of a first error correction code block of the later modulated signal; and scanning said recording track and recording the later modulated signal, while controlling such recording so as to maintain a substantially fixed relationship between the track position information and the synchronizing signals of the later modulated signal, wherein the first synchronizing signal of the first error correction code block of the later modulated signal is recorded at a nominal position of the first synchronizing signal of the first error correction code block of the later modulated signal.