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CA1252560A
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Method and system for scrambling information signals
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Secure coding and decoding system and method for television program signals
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Method and system for subscription television billing and access
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AU1888183A
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Secure coding and decoding system and method for television program signals
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CA1253616A
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Secure coding and decoding system and method for television program signals
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BR8307352A
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Distance processing system and system, more specifically, for paid television billing
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CA1163357A
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Method and system for subscription television billing and acces
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Multiple signal transmission method and system, particularly for television
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FI821754A0
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Average signaler and system specifically for television
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Method and system for remote reporting, particularly for pay television billing
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US4405942A
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Method and system for secure transmission and reception of video information, particularly for television
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KR890000017B1
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Multiple signal transmission method and system
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IT8149854D0
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Transmission for multiple signals for prepayment TV
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BE891252A
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Method and system for transmitting multiple signals in particular for television
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IL64313D0
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Multiple signal transmission method and system
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ZA8107823B
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Multiple signal transmission method and system,particularly for television
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FI813342L
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Foerfarande och system foer saeker saendning och emottagning av videoinformation speciellt foer television
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Multiple signal transmission method and system, particularly for television
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WO8000209A1
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Method and system for subscription television billing and access
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US4225884A
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Method and system for subscription television billing and access
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