
US Patent No: 4,905,280
Number of patents in Portfolio can not be more than 2000
High security videotext and videogame system
Stats
-
Feb 27, 1990
Issued date -
Sep 22, 1987
filing date -
07/100,024
serial no -
Expired
status
Importance
Abstract
A pay per use system allows the broadcast of television, videotext, and videogame programming all in the same system. The programming is broadcast in scrambled form with a broadcast signal imbedded in the program broadcast. The receiving station decoder has an internal code assigned to it plus is provided with an external code contained in a removable memory module from which it can generate signals to descramble the input program content. Television programming is viewed directly on a television screen while videotext and videogame programming are loaded onto a remote memory unit specifically adapted to interfit and mate to economical home computers specifically intended for videogames. The routing of the program, either to the television or to the remote memory unit is controlled by information in the broadcast code imbedded in the broadcast itself.
First Claim
Related Publications
International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,503,462 Automatic homing system for a subscription television signal decoder | 7 | 1981 | |
| 4,460,922 Memory select system for an STV decoder | 77 | 1981 | |
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| 4,369,462 Coding system for pay television | 69 | 1980 | |
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| 4,250,524 Validation apparatus in a pay television system | 75 | 1979 | |
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| 4,484,027 Security system for SSTV encryption | 144 | 1981 | |
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| 4,338,628 Scrambled video communication system | 89 | 1979 | |
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| 4,599,647 Receiver with interface for interaction with controller-decoder | 142 | 1983 | |
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| 4,611,227 Decoder for digital information T.V. signal | 76 | 1982 | |
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| 4,509,073 Two-way cable-television system | 103 | 1982 | |
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| 4,225,884 Method and system for subscription television billing and access | 172 | 1978 | |
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| 4,396,947 Apparatus for encoding of information | 80 | 1980 | |
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| 4,494,143 Television descrambler with security plug having folded flexible printed circuit board providing tier tag memory | 16 | 1982 | |
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| 4,696,034 High security pay television system | 137 | 1984 | |
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| 4,656,629 Digital signal transmitting and/or receiving system | 81 | 1984 | |
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| 4,623,920 Cable network data transmission system | 168 | 1983 | |
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| 4,354,201 Television system with access control | 102 | 1980 | |
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| 4,536,791 Addressable cable television control system with video format data transmission | 305 | 1984 | |
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| 4,531,020 Multi-layer encryption system for the broadcast of encrypted information | 197 | 1982 | |
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| 4,417,101 Public telephone station traffic analyzing arrangement | 11 | 1981 | |
| 4,528,588 Method and apparatus for marking the information content of an information carrying signal | 411 | 1982 | |