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 Title: |
US6028936:
Method and apparatus for authenticating recorded media
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Hillis, W. Daniel; Toluca Lake, CA
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| Assignee: |
Disney Enterprises, Inc., Burbank, CA
other patents from DISNEY ENTERPRISES, INC. (739741) (approx. 31)
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| Published / Filed: |
2000-02-22
/ 1996-01-16
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| Application Number: |
US1996000731569
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| IPC Code: |
Advanced:
G11B 20/00;
G11B 23/28;
Core:
more...
IPC-7:
G07D 7/00;
G11B 23/28;
H04K 1/00;
H04L 9/00;
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| ECLA Code: |
G11B23/28B2; G11B20/00P;
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| U.S. Class: |
Current:
713/168;
340/005.86;
380/200;
705/058;
713/179;
G9B/020.002;
G9B/023.087;
Original:
380/023;
380/025;
380/003;
380/004;
340/825.34;
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| Field of Search: |
380/003,4,23,25
340/825.3,825.34
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| Priority Number: |
| 1996-01-16 |
US1996000731569 |
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| Abstract: |
An authentic media protection system is described. Every recorded media includes a digital signature, a list of known counterfeit media identifiers, and counterfeit media response information. The digital signature is a unique encrypted combination of a recorded media serial number and samples of substantive information recorded on the media. The playback unit performs a series of authenticating steps before playing or reading recorded media. The playback unit independently verifies the encrypted digital signature to detect forgeries. The playback unit stores a recorded media identifier for each recorded media that is played in a cumulative list. This cumulative list is compared with the lists of known counterfeit media stored on each recorded media to determine whether the playback unit has played a counterfeit media. If the playback unit determines it has played a counterfeit media then it executes a counterfeit media response routine. Playback units can also store a cumulative list of known counterfeit media that it reads from each recorded media it plays. It then can check the authenticity of each new recorded media based on the internally stored list of known counterfeit media. Upon detection of counterfeit media a counterfeit response routine can be executed ranging in severity from merely displaying a warning message to shutting down the playback unit and requiring an authorized technician to unlock the unit.
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| Attorney, Agent or Firm: |
Hecker & Harriman ;
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| Primary / Asst. Examiners: |
Hayes, Gail O.; Sayadian, Hrayr A.
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| Maintenance Status: |
R1 Reinstated
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 18 claims |
I claim:
1. A method of authenticating recorded media comprising the steps of:
- reading a first recorded media identifier from a first recorded media using a playback unit having a non-volatile memory;
- storing the first recorded media identifier in a list of previously played recorded media identifiers in the playback unit non-volatile memory;
- comparing the list of previously played recorded media with a list of counterfeit media identifiers stored on the first recorded media;
- executing a counterfeit media response routine where an identifier in the previously played recorded media list matches an identifier in the counterfeit media list.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 18 U.S. patent(s) that reference this one
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