Patent US5400402A successfully refreshed from Google Patents.
US5400402A
Expired / Lapsed
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System for limiting use of down-loaded video-on-demand data
Assignee: AMERICAN PATENT DEVELOPMENT Corp LLC
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Filing: 1993-06-07
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Granted: 1995-03-21
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Expires: 2013-06-07
Abstract
Abstract A digital data system that includes a control system at a customer site that blocks access to a down-loaded stored program after it has been viewed a predetermined number of times (e.g., once), or after a predetermined interval, or any combination thereof.
Inventors
- 👤 Norton Garfinkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:08
CPC Classifications
H; H04; H04N; H04N21/00; H04N21/40; H04N21/43; H04N21/44; H04N21/4405; H04N21/45; H04N21/462; H04N21/4623; H04N7/00; H04N7/16; H04N7/162; H04N7/167; H04N7/1675; H04N7/173; H04N7/17345; G; G11; G11B; G11B20/00; G11B20/00086; G11B20/00666; G11B20/00731; G11B20/00746; G11B20/00797
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A method for providing a video product from a central station to a user site, comprising the steps of: transmitting from said central station to said user site a digital data stream comprising said video product, and data establishing a limit for authorized viewing of said video product; storing said video product at said user site; decoding said data establishing a limit for authorized viewing of said video product; storing a result of said decoding step; blocking access to said video product stored at said user site if said limit for authorized viewing is exceeded.
Claim 2
Independent Claim
95 words
A method for providing a video product from a central station to a user site, comprising the steps of: transmitting from said central station to said user site a digital data stream comprising said video product, and data establishing a limit for authorized viewing of said video product; storing said video product at said user site; decoding said data establishing a limit for authorized viewing of said video product; storing a result of said decoding step; blocking access to said video product stored at said user site if said limit for authorized viewing is exceeded.
Claim 3
Independent Claim
130 words
A method for providing a video product from a central station to a user site, comprising the steps of: transmitting from said central station to said user site a digital data stream comprising said video product, data establishing a time period during which viewing of said video product is authorized; storing said video product at said user site; decoding said data establishing a time period during which viewing of said video product is authorized; storing a result of said decoding step; comparing an output of a local clock signal generator with said result of said decoding step; p1 erasing said video product stored at said user site if the result of said comparing step is that the time period during which viewing of said video product is authorized has expired.
Claim 4
Independent Claim
130 words
A method for providing a video product from a central station to a user site, comprising the steps of: transmitting from said central station to said user site a digital data stream comprising said video product, data establishing a time period during which viewing of said video product is authorized; storing said video product at said user site; decoding said data establishing a time period during which viewing of said video product is authorized; storing a result of said decoding step; comparing an output of a local clock signal generator with said result of said decoding step; p1 erasing said video product stored at said user site if the result of said comparing step is that the time period during which viewing of said video product is authorized has expired.
Claim 5
Independent Claim
139 words
A method for providing a video product from a central station to a user site, comprising the steps of: transmitting from said central station to said user site a digital data stream comprising said video product, data establishing a time period during which viewing of said video product is authorized, and time of day clock synchronizing data; storing said video product at said user site; decoding said data establishing a time period during which viewing of said video product is authorized; storing a result of said decoding step; comparing an output of said local clock time of day signal generator with said result of said decoding step; erasing said video product stored at said user site if the result of said comparing step is that the time period during which viewing of said video product is authorized has expired.
Claim 6
Independent Claim
139 words
A method for providing a video product from a central station to a user site, comprising the steps of: transmitting from said central station to said user site a digital data stream comprising said video product, data establishing a time period during which viewing of said video product is authorized, and time of day clock synchronizing data; storing said video product at said user site; decoding said data establishing a time period during which viewing of said video product is authorized; storing a result of said decoding step; comparing an output of said local clock time of day signal generator with said result of said decoding step; erasing said video product stored at said user site if the result of said comparing step is that the time period during which viewing of said video product is authorized has expired.
References Cited (Backward Citations)
US4358672A
Cited
US4593337A
Cited
US4506387A
Cited
US4945563A
Cited
US5070400A
Cited
US5081680A
Cited
US4947429A
Cited
US4890320A
Cited
US5051822A
Cited
US5046090A
Cited
US5060079A
Cited
US5291554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-20 | 1998-09-19 | 1999-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-20 | 2002-09-19 | 2003-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-20 | 2006-09-19 | 2007-03-21 | $7700.00 | Window Closed / Lapsed |