Method of edge recording on optical record medium

Details Method of edge recording on optical record medium Method of edge recording on optical record medium

1990-08-29

1993-08-31

Psitos, Aristotelis

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 58, 369 54, 369109, 369116, 369 59, G11B 7125

Patent

active

052415244

ABSTRACT:
In a method of recording information on an optical disk with the edge recording technique, input data representing the information to be recorded is first converted into a channel bit stream with a chosen code, such as the (2,7) code, and then the different mark lengths are determined by the composition of the channel bit stream, and then a plurality of recording pulses for recording a mark having a length longer than the smallest mark length are generated, said recording pulses having the same pulse width, but the timing of the last recording pulse being adjusted with respect to the remaining recording pulses such that the correct written mark length can be obtained. Finally a writing laser beam is modulated in accordance with the recording pulses.

REFERENCES:
patent: 4835759 (1986-06-01), Saito et al.
patent: 4941139 (1990-07-01), Kulakowski et al.
patent: 5001692 (1991-03-01), Farla et al.
patent: 5109373 (1992-04-01), Ohno et al.

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