Usage dependent ticket to protect copy-protected material
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06K-019/06
출원번호
US-0615156
(2003-07-08)
발명자
/ 주소
Epstein, Michael A.
출원인 / 주소
Koninklijke Philips Electronics N.V.
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
A usage-limit is associated with each copy of copy-protected material. A conforming playback device determines how much usage has been made of the copy, and only plays the copy-protected material if the usage is within the associated usage-limit of the copy. In a preferred embodiment of this inventi
A usage-limit is associated with each copy of copy-protected material. A conforming playback device determines how much usage has been made of the copy, and only plays the copy-protected material if the usage is within the associated usage-limit of the copy. In a preferred embodiment of this invention, the providing source of the copy contains a total-usage-measure that is allocated among each of the provided copies of the copy-protected material, thereby allowing for more than one copy of the copy-protected material to be produced, or “checked-out” from the providing source. When a copy of the copy-protected material is subsequently returned, or “checked-in” to the providing source, the usage allocation associated with this copy is returned to the total-usage-value. In this manner, if a particular copy of the copy-protected material is lost, damaged, or misplaced, the loss of value to the purchaser is merely a reduction in the available total-usage. In a preferred embodiment, the parameters associated with the usage-limit are communicated via the copy of the material in a secure manner, so that an illicit provider cannot alter these parameters. Similarly, in a preferred embodiment, the parameters associated with the usage-limit are securely bound to the copy-protected material, so that an illicit provider cannot substitute illicit material for the copied material. Other security measures, such as an encryption of the copy-protected material, watermarking, ticketing, and the like, are also compatible with these aforementioned techniques, and are included in a preferred embodiment of this invention.
대표청구항▼
1. A playback device that is configured to render content material that is contained on a recording medium, the playback device comprising:a player that is configured to render the content material based on an authorization flag,a usage determinator that is configured to determine a usage-measure as
1. A playback device that is configured to render content material that is contained on a recording medium, the playback device comprising:a player that is configured to render the content material based on an authorization flag,a usage determinator that is configured to determine a usage-measure associated with the recording medium,a baseline determinator that is configured to determine at least one baseline-usage parameter that facilitates determination of a validity period associated with the content material, andan authorization device that is configured to affect the authorization flag based on the usage-measure associated with the recording medium and the validity period associated with the content material. 2. The playback device of claim 1, further including:a usage incrementer that is configured to advance a usage indicator within the recording medium to facilitate determination of the usage-measure associated with the recording medium. 3. The playback device of claim 1, further includinga security device that is configured to verify the at least one baseline-usage parameter based on a public-key of a public-private key pair that is associated with a provider of the content material. 4. The playback device of claim 3, whereinthe security device is further configured to verify the at least one baseline-usage parameter based on at least one of:a digital signature bound to the at least one baseline-usage parameter, andan encryption of the at least one baseline-usage parameter. 5. The playback device of claim 3, whereinthe at least one baseline-usage parameter is bound to the content material in a secure form,the security device is configured to verify an association between the at least one baseline-usage parameter and the content material, andthe authorization device is further configured to affect the authorization flag in dependence upon the association between the at least one baseline-usage parameter and the content material. 6. The playback device of claim 1, whereinthe at least one baseline-usage parameter is bound to a ticket that is based on a watermark of the content material, andthe authorization device is further configured to affect the authorization flag in dependence upon the ticket and the watermark.
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이 특허에 인용된 특허 (17)
Brown Graham (P.O. Box 12634 Scottsdale AZ 85267), Automated vending machine system for recorded goods.
Alexander Gregory (120 D Klein Creek Ct. Carol Stream IL 60188) Volk David L. (301 Oakwood Ct. Clairton PA 15025) Goldenbogen Steven D. (733 Broughton St. Pittsburgh PA 15213), Music vending machine capable of recording a customer\s music selections onto a compact disc.
Edwards ; Jr. Gordon L. (Easley SC), System with software usage timer and counter for allowing limited use but preventing continued unauthorized use of prote.
Ginter Karl L. ; Shear Victor H. ; Spahn Francis J. ; Van Wie David M., Systems and methods for secure transaction management and electronic rights protection.
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