Information media, recording and reading apparatus

Details Information media, recording and reading apparatus Information media, recording and reading apparatus

2008-04-15

2008-04-15

Young, Wayne (Department: 2627)

Dynamic information storage or retrieval

Binary pulse train information signal

Binary signal processing for controlling recording light...

Reexamination Certificate

active

07359302

ABSTRACT:
In a method of recording information by varying the front- and rear-edge positions of a mark by integer multiples of a specific interval, the recording density is increased without narrowing the intervals of edge position variation and without being influenced by the detection dynamic range. A data cell is divided at specific intervals Δ, and the front- and rear-edge positions of the mark are disposed at any desired positions at specific intervals Δ. Thus the mark length and the number of positions the mark can take can be increased, so that the recording density can be increased with the same margin as that of the prior art.

REFERENCES:
patent: 5808988 (1998-09-01), Maeda et al.
patent: 5809004 (1998-09-01), Kobayashi et al.
patent: 6545965 (2003-04-01), Hayashi
patent: 2002-157734 (2002-05-01), None
Japan Journal of Applied Physics, vol. 35, 1996, pp. 437-442.

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