Recording method, recording medium, and recording system
AssigneeHitachi, Ltd.
InventorsAkemi Hirotsune, Harukazu Miyamoto, Yoshiko Nishi
Life of this patent
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Abstract
An information recording medium and an optical recording system allow target information (such as an ad) to be displayed without requiring changes in hardware or physical specifications. The recording medium comprises a recording-limited area in which recording is made possible by canceling the limit after an instruction is issued for displaying the target information.
Claims16
A method of recording information on a recording medium including a user data area in which user data can be erased or recorded, and a management area in which management information is recorded, said user data area including a recording-limited area in which recording is physically possible but is logically limited, said method comprising the steps of:
- canceling a recording limit for said recording-limited area by playing back predetermined information that is pre-recorded in said recording-limited area;
- and
- recording new user data in said recording-limited area for which said recording limit has been canceled.
A method of recording information on a recording medium including a user data area in which user data can be erased or recorded, and a management area in which management information is recorded
- wherein said user data area includes a recording-limited area in which recording is physically possible but is logically limited, and information about the position of said recording-limited area is recorded in said user data area in an encrypted form, said method comprising the steps of:
- decrypting said information about the position that is in encrypted form by predetermined software;
- and
- recording new information in said recording-limited area for which a recording limit has been canceled.
A recording medium comprising:
- a user data area in which user data can be erased or recorded;
- and
- a management area in which management information is recorded,
- wherein said user data area includes a recording-limited area in which predetermined information is pre-recorded and in which recording is physically possible but is logically limited, and
- said recording limit is canceled in response to reading said predetermined information.
Dependencies are inferred from the claim text.