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410 results about "Blu-ray disc" patented technology

Blu-ray or Blu-ray Disc (BD) is a digital optical disc data storage format. It was designed to supersede the DVD format, and is capable of storing several hours of video in high-definition (HDTV 720p and 1080p) and ultra high-definition resolution (2160p). The main application of Blu-ray is as a medium for video material such as feature films and for the physical distribution of video games for the PlayStation 3, PlayStation 4, and Xbox One. The name "Blu-ray" refers to the blue laser (actually a violet laser) used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs.

Recording medium, apparatus for forming the recording medium, and apparatus and method for reproducing the recording medium

Disclosed herein are a recording medium, an apparatus for forming the recording medium, and an apparatus and method for reproducing the recording medium. CPI (Copy Protection-related Information), identification information (CPI_Flag) indicative of recording or non-recording of the CPI, and / or a plurality of contents specific information (CSI) with different formats are recorded in a PIC (Permanent Information & Control data) zone of a high-density optical disc such as a BD-ROM (Blu-ray Disc-ROM). A formatting operation and mastering operation are performed under the condition that control data including the CPI, CPI_Flag and / or CSI is separated from main data. An optical disc device judges whether the optical disc has been illegally copied, with reference to the CPI, CPI_Flag and / or CSI read from the optical disc, and compulsorily stops a data playback operation upon judging that the disc has been illegally copied. Therefore, it is possible to effectively protect an optical disc from illegal copying, make an accurate and easy distinction between a legally made optical disc and an illegally made optical disc, and restrict reproduction of an illegally made optical disc.
Owner:LG ELECTRONICS INC

Curable composition and article possessing protective layer obtained therefrom

A curable composition contains: a) functionalized colloidal silica obtained from the reaction of surface hydroxyl groups of colloidal silica with at least one functionalizing silane of the general formula: (R1)aSi(OR2)4-a wherein each R1 is, independently, a monovalent alkyl, cycloalkyl, aryl, alkaryl or aralkyl group of up to 18 carbon atoms, optionally possessing at least one chemically reactive functionality selected from the group consisting of alkenyl, acrylate and epoxy; b) at least one first curable monomer possessing at least one of alkenyl and acrylate functionality; c) at least one second curable monomer possessing epoxy functionality; d) at least one third curable monomer possessing at least one of alkenyl and acrylate functionality together with epoxy functionality, the third curable monomer replacing or supplementing the first and / or second curable monomer, provided, that when the third curable monomer replaces both the first and second curable monomers, the functionalized colloidal silica possesses at least one of alkenyl and acrylate functionality together with epoxy functionality; and, optionally, e) at least one curing agent for the curable monomer(s). The composition when cured exhibits scratch and abrasion resistant properties making it particularly well-suited for use as a coating for many different kinds of substrates, e.g., DVD discs and especially the more recent Blu-ray Discs, where these properties are highly desirable or even necessary.
Owner:SHPP GLOBAL TECH BV

Chlorophyll measuring apparatus based on RGB (red, green and blue) digital signal

The invention belongs to the technical field of photoelectric measurement, relating to a chlorophyll measuring apparatus. A mechanical structure part of the device comprises a light source, a T-shaped object stage and a sensor seat, wherein the light source contains a white light LED, the bottom of the sensor seat is provided with a color sensor, and a photophobic probe structure is formed by the light source, the object stage and the sensor seat; a circuit part of the apparatus comprises a light source module driving the white light LED, a digital signal sensor module and a digital signal processing and controlling module; the digital signal sensor module collects the light intensity information of red light, green light and blue light in probe light transmitting an object to be measured at different time by the color sensor, and transforms light intensity signals into square signals for outputting; the digital signal processing and controlling module captures the three square signals so as to obtain frequency signals representing the light intensity information of red light, green light and blue light, and simultaneously calculates the chlorophyll content in the objected to be measured according to the multiplex linear regression equation between the three frequency signals and the chlorophyll content. The apparatus has the advantages of simple and stable lighting source, relatively accurate measured chlorophyll content and the like.
Owner:TIANJIN UNIV
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