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US 2001/0037459 A1Published application
Information playback apparatus and method as well as recording medium
AssigneeSony Corporation
InventorsShigeho Ogawa, Hiromasa Watanabe
Life of this patent
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Abstract
The invention provides an information playback apparatus and method by which enjoyment of a DVD can be restricted with certainty. A disk ID of a DVD video whose enjoyment is to be restricted and a password are stored in a corresponding relationship to each other in a flash ROM. When the DVD video of the disk ID stored in the flash ROM is loaded, a controller permits playback of the DVD video only if the corresponding password is inputted.
Claims5
An information playback apparatus for playing back a recording medium on which image information is recorded, comprising:
- first fetching means for fetching identification information used for identification of a recording medium;
- second fetching means for fetching a permission condition for permitting playback of the image information recorded on a recording medium;
- storage means for storing the identification information fetched by said first fetching means and the permission condition fetched by said second fetching means;
- extraction means for extracting the identification information recorded on a recording medium loaded in said information playback apparatus;
- first comparison means for comparing the identification information extracted by said extraction means and the identification information stored in said storage means with each other;
- third fetching means for fetching a permission condition when the identification information extracted by said extraction means and the identification information stored in said storage means coincide with each other;
- second comparison means for comparing the permission condition fetched by said third fetching means and the permission condition stored in said storage means with each other;
- and
- control means for controlling playback of the image information recorded on the recording medium in response to a result of the comparison by said second comparison means.
6 more elements
An information playback method for an information playback apparatus which plays back a recording medium on which image information is recorded, comprising:
- a first fetching step of fetching identification information used for identification of a recording medium;
- a second fetching step of fetching a permission condition for permitting playback of the image information recorded on a recording medium;
- a storage control step of controlling storage of the identification information fetched by the processing in the first fetching step and the permission condition fetched by the processing in the second fetching step;
- an extraction step of extracting the identification information recorded on a recording medium loaded in said information playback apparatus;
- a first comparison step of comparing the identification information extracted by the processing in the extraction step and the identification information whose storage has been controlled by the processing in the storage control step with each other;
- a third fetching step of fetching a permission condition when the identification information extracted by the processing in the extraction step and the identification information whose storage has been controlled by the processing in the storage control step coincide with each other;
- a second comparison step of comparing the permission condition fetched by the processing in the third fetching step and the permission condition whose storage has been controlled by the processing in the storage control step with each other;
- and
- a control step of controlling playback of the image information recorded on the recording medium in response to a result of the comparison by the processing in the second comparison step.
6 more elements
A recording medium on which a computer-readable program for information playback for an information playback apparatus which plays back an information recording medium on which image information is recorded is recorded, the program comprising:
- a first fetching step of fetching identification information used for identification of an information recording medium;
- a second fetching step of fetching a permission condition for permitting playback of the image information recorded on an information recording medium;
- a storage control step of controlling storage of the identification information fetched by the processing in the first fetching step and the permission condition fetched by the processing in the second fetching step;
- an extraction step of extracting the identification information recorded on an information recording medium loaded in said information playback apparatus;
- a first comparison step of comparing the identification information extracted by the processing in the extraction step and the identification information whose storage has been controlled by the processing in the storage control step with each other;
- a third fetching step of fetching a permission condition when the identification information extracted by the processing in the extraction step and the identification information whose storage has been controlled by the processing in the storage control step coincide with each other;
- a second comparison step of comparing the permission condition fetched by the processing in the third fetching step and the permission condition whose storage has been controlled by the processing in the storage control step with each other;
- and
- a control step of controlling playback of the image information recorded on the information recording medium in response to a result of the comparison by the processing in the second comparison step.
6 more elements
Dependencies are inferred from the claim text.