Recording medium and apparatus for protecting copyrighted digital data
AssigneeSony Corporation
InventorsKoichi Sugiyama, Etsurou Sakamoto
Life of this patent
Estimating the term…
Abstract
Copying, dubbing or reproducing copyrighted digital data can be inhibited or restricted to properly protect a copyright. AV data recorded on a pre-recorded tape is output from a reproducing unit of a first digital VCR with protective information indicating whether the copy of the AV data is inhibited or not. The protective information is input with the A/V data to a second digital VCR. Copy permission information of a blank tape loaded in the second digital VCR is discriminated and the second digital VCR records the AV data supplied from the first digital VCR based on the protective information and the copy permission information.
Claims15
A recording medium for recording digital data containing previously recorded auxiliary data indicating whether or not said digital data can be recorded.
A medium for recording digital data transmitted from an outside source, said medium containing information indicative of copy permission to permit or inhibit copying of said digital data onto said medium.
AV apparatus comprising
- a control unit and
- a recording unit into which a recording medium capable of recording digital data is loaded, wherein said recording unit includes means for recording said digital data onto said recording medium based on a first auxiliary data stored in said recording medium and a second auxiliary data transmitted with said digital data.
An AV system comprising:
- a control unit and
- AV apparatus into which a recording medium capable of recording digital data is loaded, wherein said AV apparatus includes means for recording said digital data onto said recording medium based on a first auxiliary data recorded in said recording medium and a second auxiliary data transmitted with said digital data.
A recording medium comprising:
- a recording section on which an information signal is capable of being recorded;
- and
- a recording condition memory in which recording permission information representing a recording duration of said information signal or a number of times said information signal is permitted to be recorded is stored.
A recording medium comprising:
- a recording section on which an information signal is recorded;
- and
- a reproducing condition memory in which reproduction permission information representing a reproduction duration of said information signal or a number of times said information signal is permitted to be reproduced is stored.
Recording apparatus comprising:
- recording means for recording an information signal onto a recording medium, said recording medium including a recording condition memory;
- control means for controlling said recording means in response to recording permission information stored in said recording condition memory, said recording permission information representing a recording duration of said information signal or a number of times said information signal is permitted to be recorded, wherein said information signal is only recorded for a predetermined duration or said number of times and said control means includes means to inhibit normal recording of said information signal at other times.
Reproducing apparatus comprising:
- reproducing means for reproducing an information signal from a recording medium, the recording medium including a reproducing condition memory;
- control means for controlling said reproducing means in response to reproduction permission information stored in said reproducing condition memory, said reproduction permission information representing a reproduction duration or a number of times said information signal is permitted to be reproduced, wherein said information signal is only reproduced for a predetermined duration or said number of times and said control means includes means to inhibit normal reproduction of said information signal at other times.
Recording and reproducing apparatus comprising:
- recording means for recording said information signal on said recording medium, said recording medium including a condition memory;
- reproducing means for reproducing said information signal from said recording medium;
- and
- control means for controlling said recording means in response to recording permission information stored in said condition memory, said recording permissing information representing a recording duration or a number of times said information signal is permitted to be recorded, and for controlling said reproducing means in response to reproduction permission information stored in said condition memory, said reproduction permission information representing a duration or a number of times said information signal is permitted to be reproduced,
- wherein said information signal is only recorded for a predetermined duration or said number of times and said control means includes means to inhibit normal recording of said information signal at other times, and wherein said information signal is only reproduced for a predetermined duration or said number of times and said control means further includes means to inhibit normal reproduction of said information signal at other times.
A recording method comprising the steps of:
- recording an information signal onto a recording medium;
- and
- controlling said recording according to recording permission information stored in a recording condition memory of said recording medium and representing a recording duration of said information signal or a number of times said information signal is permitted to be recorded, wherein said information signal is only recorded for a predetermined duration or said number of times and normal recording of said information signal is inhibited at other times.
A reproducing method comprising the steps of:
- reproducing an information signal from a recording medium;
- and
- controlling said reproducing according to reproduction permission information stored in a reproducing condition memory of said recording medium and representing a reproduction duration or a number of times said information signal is permitted to be reproduced, wherein said information signal is only reproduced for a predetermined duration or said number of times and normal reproduction of said information signal is inhibited at other times.
Dependencies are inferred from the claim text.