Information recording apparatus and information recording...

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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07139230

ABSTRACT:
The information recording apparatus irradiates a laser beam on a recording medium such as an optical disk and forms a recording mark corresponding to a recording signal to record information. A recording pulse signal includes a mark period irradiating the laser beam for forming the recording mark and a space period in which the recording mark is not formed. The mark period has a top pulse period and an intermediate bias period following the top pulse period. The mark period constituted by the top pulse period and the intermediate bias period does not have a continuous part of a plurality of pulses having a small pulse width unlike a pulse train, so that the correct recording mark can be stably formed on the recording medium without an inadequate deformation of a recording pulse shape, even in the case of a high speed recording.

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patent: 6411579 (2002-06-01), Nobukuni et al.
patent: 6614739 (2003-09-01), Sasaki et al.
patent: 0 206 824 (1986-12-01), None
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patent: 0 932 144 (1999-07-01), None
patent: 1 026 671 (2000-08-01), None

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