Method and device for recording information on optical recording medium and the medium itself
A technology for recording media and recording information, applied in optical recording/reproducing/erasing methods, recording information storage, optical recording heads, etc., can solve problems such as inability to correctly record user data, inability to obtain pulse conditions, etc.
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no. 1 example
[0089] (structure and operation)
[0090] figure 1 is a sectional view showing an example of an optical information recording medium to which the method of recording and reproducing information is applied according to the first embodiment of the present invention. like figure 1 As shown, the recording medium 1 includes a substrate 6 made of polycarbonate having a thickness of about 1.1 mm. A first recording layer 5, a transparent spacer layer 4 with a thickness of about 0.025 mm, a second recording layer 3 with a thickness of about 100 nm as a translucent layer, and a protective film 2 with a thickness of about 0.075 mm were sequentially formed on the substrate. The recording layers 3 and 5 are provided with a plurality of information tracks (not shown) with a depth of about 20 nm and a width of 0.2 μm at a pitch of about 0.32 μm, which are used for tracking when recording and reproducing information. laser beam7. A laser beam 7 is irradiated from one side of the recordi...
no. 2 example
[0127] (structure and operation)
[0128] image 3 is a sectional view showing an example of an optical information recording medium to which a method of recording and reproducing information is applied according to a second embodiment of the present invention. like image 3 As shown, recording medium 11 includes a substrate 18 made of polycarbonate having a thickness of about 1.1 mm. A first recording layer 17, a transparent spacer layer 16 with a thickness of about 0.02 mm, a second recording layer 15 with a thickness of about 100 nm that is a translucent layer, and a transparent spacer layer 14 with a thickness of about 0.02 mm are sequentially formed on the substrate. , a third recording layer 13 which is a translucent layer with a thickness of about 100 nm, and a protective film 12 with a thickness of about 0.06 mm. The recording layers 13, 15 and 17 are provided with a plurality of information tracks (not shown) having a depth of about 20 nm and a width of about 0.2 μ...
no. 3 example
[0167] (structure)
[0168] Figure 4 is a block diagram showing the structure of one embodiment of the recording and reproducing apparatus according to the present invention, in which it is shown that the equipment has a plurality of image 3 The state of the recording layer of the optical information recording medium 11 is shown.
[0169] Figure 4 The recording and reproducing apparatus shown in includes: a spindle motor 402 on which a recording medium is placed for rotation; a controller 403; a modulator 404 that converts data to be recorded into a recording signal; a laser drive circuit 405, Drive the semiconductor laser according to the recording signal; the optical head 401 with the semiconductor laser is used to focus the laser beam on the medium, so as to record information and obtain the reproduced signal from the reflected light; the preamplifier 406 is used to amplify the reproduced signal, In order to generate a reflected light level signal 406A; information re...
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Abstract
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