Abstract:
A device comprising a media validation platform for identifying and detecting defects on a media disc is provided. The media validation platform may include: a media transport system including a guide portion including a cushion medium and a drive portion including a belt drive for conveying a media disc along a path of motion through the media validation platform; a slot providing an opening to the media validation platform and a guide to introduce the media disc to the media transport system; a quality control station comprising a light source, a light diffuser, and a camera for measuring an intensity of light from the light source passing through the light diffuser and a media layer of the at least one media disc; and a media identification station comprising a scanner assembly, the scanner assembly adapted to obtain data from a bar code of the at least one media disc.
Abstract:
To determine whether or not a correct continuous reproduction disk has been attached, and perform control in accordance with a determination result in a data reproduction process including a first information recording medium and a second information recording medium. A first root certificate transform value is calculated by applying a first transform function to data constituting a first root certificate recorded in the first information recording medium and a second root certificate transform value is calculated by applying a second transform function to data constituting a second root certificate recorded in the second information recording medium. Transform values based on first and second root certificates are compared. A process under execution is continued when the first and second root certificate transform values match. However, the process under execution is stopped or a warning is output when the first and second root certificate transform values do not match.
Abstract:
Creating a disc spin speed profile allows the player to store this disc spin speed profile and control disc spin speed based on this disc spin speed profile, simplifying the disc spin speed adjustment. Instead of using a Constant Linear Velocity profile matched to the highest data rate prescribed by the standard, the playback device can establish its own disc spin speed profile that is adapted to the data rate requirements as they vary across the record carrier. Starting the disc spin speed profile with a Constant Angular Velocity part, followed by a Constant Linear Velocity part reduces the disc spin speed at zones at the innermost of the disc, reducing noise and energy consumption.
Abstract:
A method and a system are provided for recognizing a disc. In one example, the system receives a disc, such as, for example, a Blu-ray Disc. The disc includes a content certificate and data files. The content certificate includes a unique text file that certifies the disc complies with predetermined disc parameters. The data files are the actual audio and/or video content on the disc. The system reads the content certificate or reads the data related to the data files. The system generates a hash value by applying a hash function to the content certificate or to the data related to the data files. The hash value is a unique identifier for the disc.
Abstract:
A method and a system are provided for recognizing a disc. In one example, the system receives a disc, such as, for example, a Blu-ray Disc. The disc includes a content certificate and data files. The content certificate includes a unique text file that certifies the disc complies with predetermined disc parameters. The data files are the actual audio and/or video content on the disc. The system reads the content certificate or reads the data related to the data files. The system generates a hash value by applying a hash function to the content certificate or to the data related to the data files. The hash value is a unique identifier for the disc.
Abstract:
The invention concerns an invisible writing method based on lithography of luminescent materials, characterised in that: one irradiates a luminescent material (11 ), i.e. a photostimulable luminescence material, by means of soft X-rays or EUV ionising radiation (13) beam with spectral energy lower than 400 eV, in such a way to form on the material a trace of colour centres corresponding to a pre-determined image, the irradiation takes place with a density D I of radiant energy, incident on said luminescent material, comprised between 0.01 J/cm2 and 3 J/cm2, and with a dose D A comprised between 0.1 kJ/cm3 and 2000 kJ/cm3, such an irradiation density value D I and dose D A being suitable to create a colour centres density such that said image is visible only when irradiated by light radiation of excitation of the same colour centres in the relevant absorption band. The invention further concerns a relevant method for the reading of invisible images imprinted by luminescent materials lithography, as well as relevant anti-counterfeiting/tracking marking system and reading device to be used in such a system, and a structured luminescent material particularly suited for anti-counterfeiting purposes.
Abstract translation:本发明涉及一种基于光刻材料的不可见的书写方法,其特征在于:通过具有光谱的软X射线或EUV电离辐射(13)光束照射发光材料(11),即可光激发的发光材料 能量低于400eV,以这种方式在材料上形成对应于预定图像的彩色中心的痕迹,照射发生在入射到所述发光材料上的辐射能的密度DI,包括在0.01J / cm 2和3J / cm 2,并且当剂量DA在0.1kJ / cm 3至2000kJ / cm 3之间时,这种照射密度值DI和剂量DA适于产生色心密度,使得所述图像仅在照射时可见 通过在相关吸收带中相同颜色中心的激发的光辐射。 本发明还涉及用于读取由发光材料光刻印刷的不可见图像的相关方法,以及用于这种系统中的相关防伪/跟踪标记系统和读取装置,以及特别适用于抗反射的结构化发光材料 不诚实的目的。
Abstract:
A method and apparatus for identifying an optical information storage medium, the method of identifying the optical information storage medium loaded into an apparatus for reproducing/recording the optical information storage medium including: moving an object lens at a predetermined velocity in a first direction or a second direction while the optical information storage medium is loaded; generating a sum signal by adding magnitudes of beams reflected by the optical information storage medium and condensed by an optical detector; measuring a first time period during which the sum signal has a value greater than a first level; and detecting a thickness of data layers of the optical information storage medium based on the first time period, wherein the thickness of the data layers corresponds to the type of the optical information storage medium.