Information recording and/or reproducing apparatus
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Abstract
Contents data that have been enciphered and transmitted are recorded as they are on a recording medium, and the contents key used to encipher these data is enciphered in a way used in this recording system and is recorded on the medium. Moreover, a step is taken to ensure that fine trick plays can be performed. In recording contents data that have been enciphered and transmitted, the contents data themselves are recorded in the enciphered state on the recording medium. However, the contents data are decoded by a contents data decoding circuit 46, and a map file containing necessary management information for reproduction is created by a map file creating circuit 47 and this file is recorded together with the contents data.
47 Citations
94 Claims
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1-92. -92. (canceled)
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93. A recording medium wherein the following are recorded:
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enciphered contents information; and
processor readable management information that includes access positions on the recording medium, the recording medium access positions indicating addresses on the recording medium corresponding to a time stamp in the contents information.
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94. A medium containing processor readable instructions for causing an information processor to execute a plurality of steps comprising:
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inputting content information;
extracting access positions for the inputted content information;
creating management information showing one or more access positions for the content information; and
writing the inputted content information and the management information on the medium.
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Specification