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AssigneeTaiyo Yuden Co., Ltd.
InventorsFuyuki Miyazawa, Yoshikazu Sato, Isao Matsuda, Tetsuharu Kubo, Katsuhiro Oyama, Hiroya Kakimoto
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It is an object of the present invention to improve a margin to meet good recording quality by conducting a realtime correction of a recording condition of a medium with different recording characteristics for inner and outer circumferences. To accomplish the object, control factors for power and a pulse width are independently detected and corrected using an mT pulse having a length of m′T as a pulse for power control and an nT pulse having a length of n′T as a pulse for pulse width control; more specifically, power correction for mT pulse and pulse width correction for nT pulse are conducted in realtime, wherein a recording pulse stream including the mT pulse and nT pulse is irradiated onto a medium 500 by a recording laser beam 20A as well as pits and spaces formed by irradiation of the recording pulse stream are reproduced by a reproducing laser beam 20E to detect the effects of power and pulse width variations independently.
An optical information recording device for forming pits and/or spaces on an optical recording medium by irradiating a laser beam based on a recording pulse stream having a first recording pulse comprising a top pulse alone and a second recording pulse comprising the top pulse and a succeeding pulse, the optical information recording device comprising:
An optical information recording device for forming pits and/or spaces on an optical recording medium by irradiating a laser beam based on a recording pulse stream having a first recording pulse comprising of a top pulse alone and a second recording pulse comprising of the top pulse and a succeeding pulse, the optical information recording device comprising:
An optical information recording method for forming pits and/or spaces on an optical recording medium by irradiating a laser beam based on a recording pulse stream having a first recording pulse comprising a top pulse alone and a second recording pulse comprising the top pulse and a succeeding pulse, the optical information recording method comprising the steps of:
A signal processing circuit incorporated into an optical information recording device for forming pits and/or spaces on an optical recording medium by irradiating a laser beam based on a recording pulse stream having a first recording pulse comprising a top pulse alone and a second recording pulse comprising the top pulse and a succeeding pulse, the signal processing circuit comprising:
An optical recording device for forming pits and/or spaces on an optical recording medium by pulse irradiation of a laser beam, the optical recording device comprising:
An optical recording device for forming pits and/or spaces on an optical recording medium by pulse irradiation of a laser beam, the optical recording device comprising:
An optical information recording method comprising the steps of:
A signal processing circuit comprising:
Dependencies are inferred from the claim text.