Recording apparatus and recording method

Dynamic information storage or retrieval – Binary pulse train information signal – Binary signal processing for controlling recording light...

Reexamination Certificate

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Reexamination Certificate

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06856588

ABSTRACT:
A recording apparatus generates a first pulse (EQEFM signal) in accordance with recording data such as an EFM signal. A second pulse (first overdrive pulse) to be combined with substantially the leading edge of the first pulse is generated. A third pulse (end overdrive pulse) to be combined with substantially the trailing edge of the first pulse is generated. The first, second, and third pulses are combined to synthesize a driving pulse, and the driving pulse is supplied to a laser unit. At least one of the first, second, and third pulses is controlled so that one of the level and the pulse duration thereof is varied in accordance with the length of formed pits and lands.

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patent: 6188658 (2001-02-01), Saga et al.
patent: 6430132 (2002-08-01), Saga et al.
patent: 0 932 144 (1999-07-01), None

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