摘要:
An information recording medium (100) includes a recordable area (1) where data information is recordable, an advertisement area (2) where at least either of advertisement information and identification information for identifying the advertisement information, and control area (3) where control information necessary to record the data information in the recordable area or necessary to record the data information at a rate higher than a predetermined recording rate is recorded readably on condition that the advertisement information is reproduced. With this, information recording media such as DVDs where, for example, data information is recordable can be widely used by enhancing the motivation of the users to reproduce advertisement information.
摘要:
An information recording apparatus (300) is provided with: a recording device (352) for recording record information into a first or second recording layer by irradiating thereon laser light; a first controlling device (354) for controlling the recording device to record the record information into a first object area of the second recording layer which faces a recorded area of the first recording layer; and a second controlling device (354) for controlling the recording device to record the record information into a second object area of the second recording layer which faces an unrecorded area of the first recording layer smaller than a predetermined width, out of an unrecorded area whose both ends are adjacent to the recorded area.
摘要:
An optical disk includes a substrate covered with an information recording layer. The information recording layer includes a recording material and an exothermic material dispersed in the recording material. The exothermic material absorbs recording light for recording information, and then generates heat. An external dimension of the exothermic material is smaller than the diffraction limit of reading light for reading information. The recording material has absorptance of a wavelength of the recording light lower than that of the exothermic material. Information is recorded on the recording material as the light refraction index of the recording material changes due to heating.
摘要:
An information recording medium has a plurality of recording layers, one (L0 layer) of which has an identifier recording area (NBCA) containing an identifier for identifying the information recording medium. In the identification information recording area, a groove track (GT) is divided in the direction along the groove track by a spatial frequency not lower than a specified spatial frequency (2NA/?) at which reproduction becomes impossible according to the optical transmission characteristics (MTF) of a reproduction optical system.
摘要:
An information recording apparatus (300) transmits identification information (Media ID) of an information recording medium (100) to an information distributing apparatus (200). The information distributing apparatus obtains an encryption key (disk key) from the identification information which is sent from the information recording apparatus, and encrypts record information (content). The information distribution apparatus distributes the encrypted record information (encrypted content). The information recording apparatus records the distributed encrypted record information into the information recording medium.
摘要:
At the least, a first recording layer 2 and a translucent film layer 3 are laminated in order on a transparent substrate 1 to form a first information recording/reproduction unit; and at the least, a reflective film layer 6 and a second recording layer 5 are laminated in order on a transparent substrate 7 to form a second information recording/reproduction unit. Then, the first and the second information recording/reproduction units are glued together by a transparent bonding layer 4, with the translucent film layer 3 facing the second recording layer 5, so that a two-layer information recording medium is obtained. Further, grooves G and lands L are formed for the first and the second recording layers 2 and 5. The depths of the grooves are substantially equal for the first and the second recording layers 2 and 5, the heights of the lands L are substantially equal for the first and the second recording layers 2 and 5, and the depth of the grooves G are greater than the height of the lands L.
摘要:
A writable optical disc has an information writing track, and a guiding track for introducing a laser beam to the information writing track. The guiding track has prepit information recorded thereon, the prepit information including at least address information of the optical disc. The prepit information is recorded on the guiding track at a position where interference of adjacent guiding tracks with the prepit information is prevented. The information writing track is a groove track, and the guiding track is a land track.
摘要:
An information recording medium (100) is provided with: a first recording layer (L0 layer) having a first calibration area (103-1) in which test information for calibrating a power of laser light in recording record information can be recorded; and a second recording layer (L1 layer) having a second calibration area (103-2) in which the test information can be recorded and in which at least one portion of a recording area faces the first calibration area, wherein the first calibration area and the second calibration area including a space area (103U-1, 103U-2) having a predetermined size in positions facing each other, the test information is recorded in a recording area (103R-1) located on one side, centered on the space area, in the first calibration area, and the test information is recorded in a recording area (103R-2) located on other side which is opposite to the one side, centered on the space area, in the second calibration area.
摘要:
An optical disk includes a substrate covered with an information recording layer. The information recording layer includes a recording material and a dispersion material dispersed in the recording material. The recording material absorbs recording light for recording information, and then generates heat. As the light refraction index of the recording material changes due to the heat generation, information is recorded on the recording material. The dispersion material has lower absorptance of the recording light and lower thermal conductivity than the recording material, and an external dimension smaller than a diffraction limit of reading light for reading information.
摘要:
A writable optical disc has an information writing track, and a guiding track for introducing a laser beam to the information writing track. The guiding track has prepit information recorded thereon, the prepit information including at least address information of the optical disc. The prepit information is recorded on the guiding track at a position where interference of adjacent guiding tracks with the prepit information is prevented. The information writing track is a groove track, and the guiding track is a land track.