Abstract: There is provided a new medium structure to record a bar code for copyright protection or the like in an optical information recording medium capable of recording and reproducing information by a laser with respect to a dye. When a laser beam 30 is irradiated and an optical disc 10 is rotation in the direction of an arrow F, the dye of a recording layer is decomposed, a mark piece MA of a bar code 20 is formed, and a substrate is deformed by heat generated by the dye decomposition. Next, the position of the laser beam 30 is shifted to a position where a part overlaps with the mark piece MA, and when the optical disc is similarly rotated in the direction of the arrow F, a mark piece MB is formed to overlap with the mark piece MA. The above processing is repeated, so that the length of a bar is sequentially lengthened, and the bar code with a length along the standard is formed.

Abstract: This object aims to propose an optical information recording medium configured to make copyright protection possible, an information recording method for an optical information recording medium and a recording device. An optical information recording medium is proposed to have a recording area available for recording data by laser light, wherein the recording area is provided with a user data area and a management area.

Abstract: A method of manufacturing a semiconductor device includes the steps of: preparing an underlying structure having a silicon carbide layer covering a copper wiring, and growing silicon oxycarbide on the underlying structure by vapor deposition using, as source gas, tetramethylcyclotetrasiloxane, carbon dioxide gas and oxygen gas, a flow rate of said oxygen gas being at most 3% of a flow rate of the carbon dioxide gas. The surface of the silicon carbide layer of the underlying structure may be treated with a plasma of weak oxidizing gas which contains oxygen and has a molecular weight larger than that of O2 to bring the surface more hydrophilic. Film peel-off and cracks in the interlayer insulating layer decrease.

Abstract: Provided is an optical information recording medium that can be recorded with data with only a special recording apparatus and the recorded data can be read out with a general recording/reproducing apparatus. The optical information recording medium includes a disc-like light-transmissive substrate having a surface provided with a spiral groove WB having a wobble and a land LN between adjacent segments of the groove WB, a light-absorbing layer disposed on the surface of the light-transmissive substrate, and a light reflection layer disposed on the light-absorbing layer. The groove WB has a depth Ds of about 140 nm?Ds?155 nm, the light-absorbing layer has a recess with a depth Dd of about 95 nm?Dd?105 nm in the groove, and a push-pull signal before recording has a value of about 0.3 or less. The optical information recording medium may include an anti-illegal copy measure.

Abstract: An optical-information reproducing system is provided, in which the tracking capability of an optical pickup can be increased, and in which the number of occurrences in which the optical pickup fails to track a groove can be reduced, by increasing a gain margin and by ensuring the gain margin. In the optical-information reproducing system, an optical-information recording medium is rotated at a fixed linear velocity of about 3.49 m/s, and the optical pickup is caused to track the groove to irradiate the groove with laser light, whereby information recorded on the optical-information recording medium can be reproduced. A higher-order resonance frequency of the optical pickup that is generated when the optical pickup is caused to track the groove can be made lower than a wobble frequency that is reproduced using the groove without performing rotation control on the optical-information recording medium.

Abstract: A method of manufacturing a semiconductor device includes the steps of: preparing an underlying structure having a silicon carbide layer covering a copper wiring, and growing silicon oxycarbide on the underlying structure by vapor deposition using, as source gas, tetramethylcyclotetrasiloxane, carbon dioxide gas and oxygen gas, a flow rate of said oxygen gas being at most 3% of a flow rate of the carbon dioxide gas. The surface of the silicon carbide layer of the underlying structure may be treated with a plasma of weak oxidizing gas which contains oxygen and has a molecular weight larger than that of O2 to bring the surface more hydrophilic. Film peel-off and cracks in the interlayer insulating layer decrease.

Abstract: An optical information recording medium includes an optical disk body including a light-transmitting substrate, a recording layer provided on a main surface of the light-transmitting substrate over a region in which pre-grooves are formed and a portion of a region in which dummy grooves are formed, and a reflecting layer provided over the recording layer and a region of the light-transmitting substrate in which the recording layer is not provided; and an ink receiving layer provided on the label surface side of the optical disc body. The dummy grooves provided in at least a portion of the region in which the dye material is not applied have a pitch larger than that of the pre-grooves, are shallower than that of the pre-grooves, or have half-width less than that of the pre-grooves.

Abstract: There is provided a new medium structure to record a bar code for copyright protection or the like in an optical information recording medium capable of recording and reproducing information by a laser with respect to a dye. When a laser beam 30 is irradiated and an optical disc 10 is rotation in the direction of an arrow F, the dye of a recording layer is decomposed, a mark piece MA of a bar code 20 is formed, and a substrate is deformed by heat generated by the dye decomposition. Next, the position of the laser beam 30 is shifted to a position where a part overlaps with the mark piece MA, and when the optical disc is similarly rotated in the direction of the arrow F, a mark piece MB is formed to overlap with the mark piece MA. The above processing is repeated, so that the length of a bar is sequentially lengthened, and the bar code with a length along the standard is formed.

Abstract: An optical information recording medium, recording and reproducing method and device for same, and an optical pickup, which enables high-density recording and high-speed recording. Recording or reproduction is performed to or from the optical information recording medium having a track pitch Tp of 1.0 ?m?Tp?1.2 ?m, using laser light having a wavelength ? of 770 nm???830 nm, and a spot diameter Sd of 1.1 ?m?Sd?1.3 ?m.

Abstract: A method of manufacturing a semiconductor device includes the steps of: preparing an underlying structure having a silicon carbide layer covering a copper wiring, and growing silicon oxycarbide on the underlying structure by vapor deposition using, as source gas, tetramethylcyclotetrasiloxane, carbon dioxide gas and oxygen gas, a flow rate of said oxygen gas being at most 3% of a flow rate of the carbon dioxide gas. The surface of the silicon carbide layer of the underlying structure may be treated with a plasma of weak oxidizing gas which contains oxygen and has a molecular weight larger than that of O2 to bring the surface more hydrophilic. Film peel-off and cracks in the interlayer insulating layer decrease.

Abstract: A semiconductor device including an underlying structure having a silicon carbide layer covering a copper wiring, and growing silicon oxycarbide on the underlying structure by vapor deposition using, as source gas, tetramethylcyclotetrasiloxane, carbon dioxide gas and oxygen gas, a flow rate of said oxygen gas being at most 3% of a flow rate of the carbon dioxide gas. The surface of the silicon carbide layer of the underlying structure may be treated with a plasma of weak oxidizing gas which contains oxygen and has a molecular weight larger than that of O2 to bring the surface more hydrophilic. Film peel-off and cracks in the interlayer insulating layer decrease.

Abstract: An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by optimally determining the thicknesses of a recording layer and a reflecting layer. The optical information recording medium comprises the recording layer formed on a transparent substrate having a spiral pregroove formed thereon, wherein a track pitch Tp of the pregroove is 1.0 ?m?Tp?1.2 ?m and a thickness Dg of the recording layer on the pregroove is 80 nm?Dg?120 nm.

Abstract: An optical information recording/reproducing method and a device are provided, which can optimally record and reproduce information onto and from an optical information recording medium such as CD-R or DVD-R for high-density recording. A reproducing signal corresponding to a pit-land pattern recorded on the optical information recording medium is obtained by irradiating laser light to the optical information recording medium to judge a relative effective spot diameter of the laser light corresponding to a standard length T according to the reproducing signal, a correction range at recording of information is specified according to the judged effective spot diameter, a recording pulse is corrected according to the specified correction range, and a correction range of the reproducing signal at reproduction of information is specified to correct the reproducing signal according to the specified correction range.

Abstract: An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by devising the shape of a pregroove is provided. It is provided with a recording layer formed on a transparent substrate having a spiral pregroove formed thereon, wherein a track pitch Tp of the pregroove is 1.0 &mgr;m≦Tp≦1.2 &mgr;m and an inclination angle Ga of sidewalls of the pregroove is 30°≦Ga≦70°.

Abstract: A method of manufacturing a semiconductor device includes the steps of: preparing an underlying structure having a silicon carbide layer covering a copper wiring, and growing silicon oxycarbide on the underlying structure by vapor deposition using, as source gas, tetramethylcyclotetrasiloxane, carbon dioxide gas and oxygen gas, a flow rate of said oxygen gas being at most 3% of a flow rate of the carbon dioxide gas. The surface of the silicon carbide layer of the underlying structure may be treated with a plasma of weak oxidizing gas which contains oxygen and has a molecular weight larger than that of O2 to bring the surface more hydrophilic. Film peel-off and cracks in the interlayer insulating layer decrease.

Abstract: An optical information recording medium, recording and reproducing method and device for same, and an optical pickup, which enables high-density recording and high-speed recording. Recording or reproduction is performed to or from the optical information recording medium having a track pitch Tp of 1.0 &mgr;m≦Tp≦1.2 &mgr;m, using laser light having a wavelength &lgr; of 770 nm≦&lgr;≦830 nm, and a spot diameter Sd of 1.1 &mgr;m≦Sd≦1.3 &mgr;m.

Abstract: An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by devising the shape of a pregroove is provided. It is provided with a recording layer formed on a transparent substrate having a spiral pregroove formed thereon, wherein a track pitch Tp of the pregroove is 1.0 &mgr;m≦Tp≦1.2 &mgr;m and an inclination angle Ga of sidewalls of the pregroove is 30°≦Ga≦70°.

Abstract: An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by optimally determining the thicknesses of a recording layer and a reflecting layer. The optical information recording medium comprises the recording layer formed on a transparent substrate having a spiral pregroove formed thereon, wherein a track pitch Tp of the pregroove is 1.0 &mgr;m≦Tp≦1.2 &mgr;m and a thickness Dg of the recording layer on the pregroove is 80 nm≦Dg≦120 nm.

Abstract: An optical information recording medium recordable at a high density two times or more higher than that of currently-used CD-Rs by using a material having optimum optical characteristics as an organic dye material of a recording layer. The optical information recording medium comprises a recording layer on a transparent substrate having a spiral pregroove formed thereon, wherein the track pitch Tp of the pregroove is 1.0 &mgr;m≦Tp≦1.2 &mgr;m and the optical phase difference &Dgr;S is 0.15≦&Dgr;S≦0.55.

Abstract: An inclination, at a pit forming position, of the information recording surface of an optical disc with respect to a plane that is perpendicular to laser light emitted from an optical pickup is detected by a tilt sensor. Pits are formed while the laser light intensity is increased as the detected inclination increases. The illumination light quantity per unit area decreases as the inclination of the information recording surface increases. Setting the laser light intensity at a larger value as the inclination of the information recording surface increases makes it possible to compensate for reduction of the illumination light quantity per unit area that occurs in association with inclination of the information recording surface without the need for correcting the laser light emitting direction. Therefore, even if the information recording surface of an optical information recording medium is inclined, information recording can be performed with a constant laser light emitting direction.