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RECORDING MEDIA
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Technical Examples
- The invention provides a recording media player and a recording media recorder provided with a high-security copy protection system of less complexity. A recording media player and/or recorder provided with a copy protection system stubborn to attacks and highly flexible in dealing with recording media of various copy conditions. For this purpose, various distributed copyright protection information (DCPI) values are used. The DCPI values include water marks in case of an MPEG stream, Copy Generation Management System (CGMS) codes, EMI (encryption mode indicator) in case of an IEEE1394-1995 interface, and user defined DCPI values. The recording is achieved such that DCPI values are recorded in user-unrewritable (or user-inaccessible) areas of the recording medium as long as possible.
- Squarylium-metal chelate compounds as recording materials for optical recording media, and optical recording media using these compounds, which have excellent recording properties, light resistance and storage stability. The squarylium-metal chelate compound is represented by following Structural Formulas (1) and (2):
- A DVD recording method for recording data onto recording media by using a given coding rule, including: generating two data streams by using a plurality of code mapping variants prepared for coding input data, quasi-randomly selecting one of the plurality of code mapping variants, if absolute DSVs of the two data streams are substantially equal, and converting into recording code sequences, where polarities of said two data streams are inverted with respect to each other; and recording data onto said recording media, based on said recording code sequences.
- A recording medium apparatus capable of loading a plurality of types of recording media is disclosed. The recording medium apparatus is operable for loading a recording medium having a terminal at a front edge side thereof with respect to an insertion direction and a common dimension part configured to have a predefined dimension at a side opposite to the insertion direction. The recording medium apparatus mechanically and electrically loads and unloads the recording medium based on the common dimension part regardless of different insertion directional lengths of the various recording media.
- An optimal recording apparatus and method for optical recording media are disclosed which are capable of recording data on the optical recording medium under optimum conditions in an optical recording/reproducing apparatus.
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