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AssigneeTaiyo Yuden Co., Ltd.
InventorsYoshikazu Sato, Mitsuo Sekiguchi, Hiroya Kakimoto, Fuyuki Miyazawa, Tetsuharu Kubo
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The invention provides a method effective in detecting a reproduction signal in real time correction in which correction is simultaneously performed with recording. In this method, a laser beam emitted from a laser diode 110 is divided into a plurality of beam spots by a diffraction grating 114. One of the plurality of beam spots is used as a beam spot for recording, and another beam spot is used as a beam spot for reproduction. Reflected light components obtained from these beam spots are independently detected by a detector 122. A period for which a recording laser beam is in an ON state is referred to as a gate signal, and a mask is put on an RF signal obtained from a beam spot for reproduction, thereby selectively detecting pits reproduced when the recording laser beam is in the ON state.
An optical information recording device that records information on an optical recording medium by pulse irradiation of a recording laser beam onto the optical recording medium and that detects the information by irradiating a reproduction laser beam onto the optical recording medium, wherein
An optical information recording device that records information on an optical recording medium by pulse irradiation of a recording laser beam onto the optical recording medium and that detects the information by irradiating a reproduction laser beam onto the optical recording medium, wherein the recording laser beam and the reproduction laser beam are branched from a common laser beam, comprising:
An optical information recording device that records information on an optical recording medium by pulse irradiation of a recording laser beam onto the optical recording medium and that detects the information by irradiating a reproduction laser beam onto the optical recording medium, wherein the recording laser beam and the reproduction laser beam are branched from a common laser beam, comprising:
An optical information recording device that writes information on an optical recording medium by pulse irradiation of a recording laser beam onto the optical recording medium and that detects the information by irradiating a reproduction laser beam onto the optical recording medium, wherein the recording laser beam and the reproduction laser beam are branched from a common laser beam, comprising:
An method of recording information on an optical recording medium by pulse irradiation of a recording laser beam on the optical recording medium and of detecting the information by irradiating a reproduction laser beam onto the optical recording medium, comprising:
Dependencies are inferred from the claim text.